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  2. Subject: BitTorrentSpecification - TheoryOrg

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  3. Date: Thu, 8 Sep 2011 06:20:06 +0800

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  128. <BODY class=3D"mediawiki ltr ns-0 ns-subject =

    129. 

  129. page-BitTorrentSpecification skin-monobook">

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  130. <DIV id=3D"globalWrapper">

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  131. <DIV id=3D"column-content">

    132. 

  132. <DIV id=3D"content"><A id=3D"top"></A>

    133. 

  133. <H1 id=3D"firstHeading" =

    134. 

  134. class=3D"firstHeading">BitTorrentSpecification</H1>

    135. 

  135. <DIV id=3D"bodyContent">

    136. 

  136. <H3 id=3D"siteSub">From TheoryOrg</H3>

    137. 

  137. <DIV id=3D"contentSub"></DIV>

    138. 

  138. <DIV id=3D"jump-to-nav">Jump to: <A =

    139. 

  139. href=3D"http://wiki.theory.org/BitTorrentSpecification#column-one">naviga=

    140. 

  140. tion</A>,=20

    141. 

  141. <A=20

    142. 

  142. href=3D"http://wiki.theory.org/BitTorrentSpecification#searchInput">searc=

    143. 

  143. h</A></DIV><!-- start content -->

    144. 

  144. <P><BIG><BIG><BIG> <I><B>Bittorrent Protocol Specification v1.0</B></I>=20

    145. 

  145. </BIG></BIG></BIG></P>

    146. 

  146. <TABLE id=3D"toc" class=3D"toc">

    147. 

  147.   <TBODY>

    148. 

  148.   <TR>

    149. 

  149.     <TD>

    150. 

  150.       <DIV id=3D"toctitle">

    151. 

  151.       <H2>Contents</H2></DIV>

    152. 

  152.       <UL>

    153. 

  153.         <LI class=3D"toclevel-1 tocsection-1"><A =

    154. 

  154. href=3D"http://wiki.theory.org/BitTorrentSpecification#Identification"><S=

    155. 

  155. PAN=20

    156. 

  156.         class=3D"tocnumber">1</SPAN> <SPAN=20

    157. 

  157.         class=3D"toctext">Identification</SPAN></A></LI>

    158. 

  158.         <LI class=3D"toclevel-1 tocsection-2"><A =

    159. 

  159. href=3D"http://wiki.theory.org/BitTorrentSpecification#Purpose"><SPAN=20

    160. 

  160.         class=3D"tocnumber">2</SPAN> <SPAN =

    161. 

  161. class=3D"toctext">Purpose</SPAN></A></LI>

    162. 

  162.         <LI class=3D"toclevel-1 tocsection-3"><A =

    163. 

  163. href=3D"http://wiki.theory.org/BitTorrentSpecification#Scope"><SPAN=20

    164. 

  164.         class=3D"tocnumber">3</SPAN> <SPAN =

    165. 

  165. class=3D"toctext">Scope</SPAN></A></LI>

    166. 

  166.         <LI class=3D"toclevel-1 tocsection-4"><A =

    167. 

  167. href=3D"http://wiki.theory.org/BitTorrentSpecification#Related_Documents"=

    168. 

  168. ><SPAN=20

    169. 

  169.         class=3D"tocnumber">4</SPAN> <SPAN class=3D"toctext">Related=20

    170. 

  170.         Documents</SPAN></A></LI>

    171. 

  171.         <LI class=3D"toclevel-1 tocsection-5"><A =

    172. 

  172. href=3D"http://wiki.theory.org/BitTorrentSpecification#Conventions"><SPAN=

    173. 

  173. =20

    174. 

  174.         class=3D"tocnumber">5</SPAN> <SPAN=20

    175. 

  175.         class=3D"toctext">Conventions</SPAN></A></LI>

    176. 

  176.         <LI class=3D"toclevel-1 tocsection-6"><A =

    177. 

  177. href=3D"http://wiki.theory.org/BitTorrentSpecification#Bencoding"><SPAN=20

    178. 

  178.         class=3D"tocnumber">6</SPAN> <SPAN =

    179. 

  179. class=3D"toctext">Bencoding</SPAN></A>

    180. 

  180.         <UL>

    181. 

  181.           <LI class=3D"toclevel-2 tocsection-7"><A =

    182. 

  182. href=3D"http://wiki.theory.org/BitTorrentSpecification#Bencoded_Strings">=

    183. 

  183. <SPAN=20

    184. 

  184.           class=3D"tocnumber">6.1</SPAN> <SPAN =

    185. 

  185. class=3D"toctext">Bencoded=20

    186. 

  186.           Strings</SPAN></A></LI>

    187. 

  187.           <LI class=3D"toclevel-2 tocsection-8"><A =

    188. 

  188. href=3D"http://wiki.theory.org/BitTorrentSpecification#Integers"><SPAN=20

    189. 

  189.           class=3D"tocnumber">6.2</SPAN> <SPAN=20

    190. 

  190.           class=3D"toctext">Integers</SPAN></A></LI>

    191. 

  191.           <LI class=3D"toclevel-2 tocsection-9"><A =

    192. 

  192. href=3D"http://wiki.theory.org/BitTorrentSpecification#Lists"><SPAN=20

    193. 

  193.           class=3D"tocnumber">6.3</SPAN> <SPAN=20

    194. 

  194.           class=3D"toctext">Lists</SPAN></A></LI>

    195. 

  195.           <LI class=3D"toclevel-2 tocsection-10"><A =

    196. 

  196. href=3D"http://wiki.theory.org/BitTorrentSpecification#Dictionaries"><SPA=

    197. 

  197. N=20

    198. 

  198.           class=3D"tocnumber">6.4</SPAN> <SPAN=20

    199. 

  199.           class=3D"toctext">Dictionaries</SPAN></A></LI>

    200. 

  200.           <LI class=3D"toclevel-2 tocsection-11"><A =

    201. 

  201. href=3D"http://wiki.theory.org/BitTorrentSpecification#Implementations"><=

    202. 

  202. SPAN=20

    203. 

  203.           class=3D"tocnumber">6.5</SPAN> <SPAN=20

    204. 

  204.           class=3D"toctext">Implementations</SPAN></A></LI></UL></LI>

    205. 

  205.         <LI class=3D"toclevel-1 tocsection-12"><A =

    206. 

  206. href=3D"http://wiki.theory.org/BitTorrentSpecification#Metainfo_File_Stru=

    207. 

  207. cture"><SPAN=20

    208. 

  208.         class=3D"tocnumber">7</SPAN> <SPAN class=3D"toctext">Metainfo =

    209. 

  209. File=20

    210. 

  210.         Structure</SPAN></A>

    211. 

  211.         <UL>

    212. 

  212.           <LI class=3D"toclevel-2 tocsection-13"><A =

    213. 

  213. href=3D"http://wiki.theory.org/BitTorrentSpecification#Info_Dictionary"><=

    214. 

  214. SPAN=20

    215. 

  215.           class=3D"tocnumber">7.1</SPAN> <SPAN class=3D"toctext">Info=20

    216. 

  216.           Dictionary</SPAN></A>

    217. 

  217.           <UL>

    218. 

  218.             <LI class=3D"toclevel-3 tocsection-14"><A =

    219. 

  219. href=3D"http://wiki.theory.org/BitTorrentSpecification#Info_in_Single_Fil=

    220. 

  220. e_Mode"><SPAN=20

    221. 

  221.             class=3D"tocnumber">7.1.1</SPAN> <SPAN =

    222. 

  222. class=3D"toctext">Info in Single=20

    223. 

  223.             File Mode</SPAN></A></LI>

    224. 

  224.             <LI class=3D"toclevel-3 tocsection-15"><A =

    225. 

  225. href=3D"http://wiki.theory.org/BitTorrentSpecification#Info_in_Multiple_F=

    226. 

  226. ile_Mode"><SPAN=20

    227. 

  227.             class=3D"tocnumber">7.1.2</SPAN> <SPAN =

    228. 

  228. class=3D"toctext">Info in=20

    229. 

  229.             Multiple File Mode</SPAN></A></LI></UL></LI>

    230. 

  230.           <LI class=3D"toclevel-2 tocsection-16"><A =

    231. 

  231. href=3D"http://wiki.theory.org/BitTorrentSpecification#Notes"><SPAN=20

    232. 

  232.           class=3D"tocnumber">7.2</SPAN> <SPAN=20

    233. 

  233.           class=3D"toctext">Notes</SPAN></A></LI></UL></LI>

    234. 

  234.         <LI class=3D"toclevel-1 tocsection-17"><A =

    235. 

  235. href=3D"http://wiki.theory.org/BitTorrentSpecification#Tracker_HTTP.2FHTT=

    236. 

  236. PS_Protocol"><SPAN=20

    237. 

  237.         class=3D"tocnumber">8</SPAN> <SPAN class=3D"toctext">Tracker =

    238. 

  238. HTTP/HTTPS=20

    239. 

  239.         Protocol</SPAN></A>

    240. 

  240.         <UL>

    241. 

  241.           <LI class=3D"toclevel-2 tocsection-18"><A =

    242. 

  242. href=3D"http://wiki.theory.org/BitTorrentSpecification#Tracker_Request_Pa=

    243. 

  243. rameters"><SPAN=20

    244. 

  244.           class=3D"tocnumber">8.1</SPAN> <SPAN class=3D"toctext">Tracker =

    245. 

  245. Request=20

    246. 

  246.           Parameters</SPAN></A></LI>

    247. 

  247.           <LI class=3D"toclevel-2 tocsection-19"><A =

    248. 

  248. href=3D"http://wiki.theory.org/BitTorrentSpecification#Tracker_Response">=

    249. 

  249. <SPAN=20

    250. 

  250.           class=3D"tocnumber">8.2</SPAN> <SPAN class=3D"toctext">Tracker =

    251. 

  251. 

    252. 

  252.           Response</SPAN></A></LI></UL></LI>

    253. 

  253.         <LI class=3D"toclevel-1 tocsection-20"><A =

    254. 

  254. href=3D"http://wiki.theory.org/BitTorrentSpecification#Tracker_.27scrape.=

    255. 

  255. 27_Convention"><SPAN=20

    256. 

  256.         class=3D"tocnumber">9</SPAN> <SPAN class=3D"toctext">Tracker =

    257. 

  257. 'scrape'=20

    258. 

  258.         Convention</SPAN></A>

    259. 

  259.         <UL>

    260. 

  260.           <LI class=3D"toclevel-2 tocsection-21"><A =

    261. 

  261. href=3D"http://wiki.theory.org/BitTorrentSpecification#Unofficial_extensi=

    262. 

  262. ons_to_scrape"><SPAN=20

    263. 

  263.           class=3D"tocnumber">9.1</SPAN> <SPAN =

    264. 

  264. class=3D"toctext">Unofficial=20

    265. 

  265.           extensions to scrape</SPAN></A></LI></UL></LI>

    266. 

  266.         <LI class=3D"toclevel-1 tocsection-22"><A =

    267. 

  267. href=3D"http://wiki.theory.org/BitTorrentSpecification#Peer_wire_protocol=

    268. 

  268. _.28TCP.29"><SPAN=20

    269. 

  269.         class=3D"tocnumber">10</SPAN> <SPAN class=3D"toctext">Peer wire =

    270. 

  270. protocol=20

    271. 

  271.         (TCP)</SPAN></A>

    272. 

  272.         <UL>

    273. 

  273.           <LI class=3D"toclevel-2 tocsection-23"><A =

    274. 

  274. href=3D"http://wiki.theory.org/BitTorrentSpecification#Overview"><SPAN=20

    275. 

  275.           class=3D"tocnumber">10.1</SPAN> <SPAN=20

    276. 

  276.           class=3D"toctext">Overview</SPAN></A></LI>

    277. 

  277.           <LI class=3D"toclevel-2 tocsection-24"><A =

    278. 

  278. href=3D"http://wiki.theory.org/BitTorrentSpecification#Data_Types"><SPAN =

    279. 

  279. 

    280. 

  280.           class=3D"tocnumber">10.2</SPAN> <SPAN class=3D"toctext">Data=20

    281. 

  281.           Types</SPAN></A></LI>

    282. 

  282.           <LI class=3D"toclevel-2 tocsection-25"><A =

    283. 

  283. href=3D"http://wiki.theory.org/BitTorrentSpecification#Message_flow"><SPA=

    284. 

  284. N=20

    285. 

  285.           class=3D"tocnumber">10.3</SPAN> <SPAN =

    286. 

  286. class=3D"toctext">Message=20

    287. 

  287.           flow</SPAN></A></LI>

    288. 

  288.           <LI class=3D"toclevel-2 tocsection-26"><A =

    289. 

  289. href=3D"http://wiki.theory.org/BitTorrentSpecification#Handshake"><SPAN=20

    290. 

  290.           class=3D"tocnumber">10.4</SPAN> <SPAN=20

    291. 

  291.           class=3D"toctext">Handshake</SPAN></A>

    292. 

  292.           <UL>

    293. 

  293.             <LI class=3D"toclevel-3 tocsection-27"><A =

    294. 

  294. href=3D"http://wiki.theory.org/BitTorrentSpecification#peer_id"><SPAN=20

    295. 

  295.             class=3D"tocnumber">10.4.1</SPAN> <SPAN=20

    296. 

  296.             class=3D"toctext">peer_id</SPAN></A></LI></UL></LI>

    297. 

  297.           <LI class=3D"toclevel-2 tocsection-28"><A =

    298. 

  298. href=3D"http://wiki.theory.org/BitTorrentSpecification#Messages"><SPAN=20

    299. 

  299.           class=3D"tocnumber">10.5</SPAN> <SPAN=20

    300. 

  300.           class=3D"toctext">Messages</SPAN></A>

    301. 

  301.           <UL>

    302. 

  302.             <LI class=3D"toclevel-3 tocsection-29"><A =

    303. 

  303. href=3D"http://wiki.theory.org/BitTorrentSpecification#keep-alive:_.3Clen=

    304. 

  304. .3D0000.3E"><SPAN=20

    305. 

  305.             class=3D"tocnumber">10.5.1</SPAN> <SPAN =

    306. 

  306. class=3D"toctext">keep-alive:=20

    307. 

  307.             &lt;len=3D0000&gt;</SPAN></A></LI>

    308. 

  308.             <LI class=3D"toclevel-3 tocsection-30"><A =

    309. 

  309. href=3D"http://wiki.theory.org/BitTorrentSpecification#choke:_.3Clen.3D00=

    310. 

  310. 01.3E.3Cid.3D0.3E"><SPAN=20

    311. 

  311.             class=3D"tocnumber">10.5.2</SPAN> <SPAN =

    312. 

  312. class=3D"toctext">choke:=20

    313. 

  313.             &lt;len=3D0001&gt;&lt;id=3D0&gt;</SPAN></A></LI>

    314. 

  314.             <LI class=3D"toclevel-3 tocsection-31"><A =

    315. 

  315. href=3D"http://wiki.theory.org/BitTorrentSpecification#unchoke:_.3Clen.3D=

    316. 

  316. 0001.3E.3Cid.3D1.3E"><SPAN=20

    317. 

  317.             class=3D"tocnumber">10.5.3</SPAN> <SPAN =

    318. 

  318. class=3D"toctext">unchoke:=20

    319. 

  319.             &lt;len=3D0001&gt;&lt;id=3D1&gt;</SPAN></A></LI>

    320. 

  320.             <LI class=3D"toclevel-3 tocsection-32"><A =

    321. 

  321. href=3D"http://wiki.theory.org/BitTorrentSpecification#interested:_.3Clen=

    322. 

  322. .3D0001.3E.3Cid.3D2.3E"><SPAN=20

    323. 

  323.             class=3D"tocnumber">10.5.4</SPAN> <SPAN =

    324. 

  324. class=3D"toctext">interested:=20

    325. 

  325.             &lt;len=3D0001&gt;&lt;id=3D2&gt;</SPAN></A></LI>

    326. 

  326.             <LI class=3D"toclevel-3 tocsection-33"><A =

    327. 

  327. href=3D"http://wiki.theory.org/BitTorrentSpecification#not_interested:_.3=

    328. 

  328. Clen.3D0001.3E.3Cid.3D3.3E"><SPAN=20

    329. 

  329.             class=3D"tocnumber">10.5.5</SPAN> <SPAN =

    330. 

  330. class=3D"toctext">not=20

    331. 

  331.             interested: &lt;len=3D0001&gt;&lt;id=3D3&gt;</SPAN></A></LI>

    332. 

  332.             <LI class=3D"toclevel-3 tocsection-34"><A =

    333. 

  333. href=3D"http://wiki.theory.org/BitTorrentSpecification#have:_.3Clen.3D000=

    334. 

  334. 5.3E.3Cid.3D4.3E.3Cpiece_index.3E"><SPAN=20

    335. 

  335.             class=3D"tocnumber">10.5.6</SPAN> <SPAN =

    336. 

  336. class=3D"toctext">have:=20

    337. 

  337.             &lt;len=3D0005&gt;&lt;id=3D4&gt;&lt;piece =

    338. 

  338. index&gt;</SPAN></A></LI>

    339. 

  339.             <LI class=3D"toclevel-3 tocsection-35"><A =

    340. 

  340. href=3D"http://wiki.theory.org/BitTorrentSpecification#bitfield:_.3Clen.3=

    341. 

  341. D0001.2BX.3E.3Cid.3D5.3E.3Cbitfield.3E"><SPAN=20

    342. 

  342.             class=3D"tocnumber">10.5.7</SPAN> <SPAN =

    343. 

  343. class=3D"toctext">bitfield:=20

    344. 

  344.             =

    345. 

  345. &lt;len=3D0001+X&gt;&lt;id=3D5&gt;&lt;bitfield&gt;</SPAN></A></LI>

    346. 

  346.             <LI class=3D"toclevel-3 tocsection-36"><A =

    347. 

  347. href=3D"http://wiki.theory.org/BitTorrentSpecification#request:_.3Clen.3D=

    348. 

  348. 0013.3E.3Cid.3D6.3E.3Cindex.3E.3Cbegin.3E.3Clength.3E"><SPAN=20

    349. 

  349.             class=3D"tocnumber">10.5.8</SPAN> <SPAN =

    350. 

  350. class=3D"toctext">request:=20

    351. 

  351.             =

    352. 

  352. &lt;len=3D0013&gt;&lt;id=3D6&gt;&lt;index&gt;&lt;begin&gt;&lt;length&gt;<=

    353. 

  353. /SPAN></A></LI>

    354. 

  354.             <LI class=3D"toclevel-3 tocsection-37"><A =

    355. 

  355. href=3D"http://wiki.theory.org/BitTorrentSpecification#piece:_.3Clen.3D00=

    356. 

  356. 09.2BX.3E.3Cid.3D7.3E.3Cindex.3E.3Cbegin.3E.3Cblock.3E"><SPAN=20

    357. 

  357.             class=3D"tocnumber">10.5.9</SPAN> <SPAN =

    358. 

  358. class=3D"toctext">piece:=20

    359. 

  359.             =

    360. 

  360. &lt;len=3D0009+X&gt;&lt;id=3D7&gt;&lt;index&gt;&lt;begin&gt;&lt;block&gt;=

    361. 

  361. </SPAN></A></LI>

    362. 

  362.             <LI class=3D"toclevel-3 tocsection-38"><A =

    363. 

  363. href=3D"http://wiki.theory.org/BitTorrentSpecification#cancel:_.3Clen.3D0=

    364. 

  364. 013.3E.3Cid.3D8.3E.3Cindex.3E.3Cbegin.3E.3Clength.3E"><SPAN=20

    365. 

  365.             class=3D"tocnumber">10.5.10</SPAN> <SPAN =

    366. 

  366. class=3D"toctext">cancel:=20

    367. 

  367.             =

    368. 

  368. &lt;len=3D0013&gt;&lt;id=3D8&gt;&lt;index&gt;&lt;begin&gt;&lt;length&gt;<=

    369. 

  369. /SPAN></A></LI>

    370. 

  370.             <LI class=3D"toclevel-3 tocsection-39"><A =

    371. 

  371. href=3D"http://wiki.theory.org/BitTorrentSpecification#port:_.3Clen.3D000=

    372. 

  372. 3.3E.3Cid.3D9.3E.3Clisten-port.3E"><SPAN=20

    373. 

  373.             class=3D"tocnumber">10.5.11</SPAN> <SPAN =

    374. 

  374. class=3D"toctext">port:=20

    375. 

  375.             =

    376. 

  376. &lt;len=3D0003&gt;&lt;id=3D9&gt;&lt;listen-port&gt;</SPAN></A></LI></UL>

    377. 

  377.           </LI></UL></LI>

    378. 

  378.         <LI class=3D"toclevel-1 tocsection-40"><A =

    379. 

  379. href=3D"http://wiki.theory.org/BitTorrentSpecification#Algorithms"><SPAN =

    380. 

  380. 

    381. 

  381.         class=3D"tocnumber">11</SPAN> <SPAN =

    382. 

  382. class=3D"toctext">Algorithms</SPAN></A>

    383. 

  383.         <UL>

    384. 

  384.           <LI class=3D"toclevel-2 tocsection-41"><A =

    385. 

  385. href=3D"http://wiki.theory.org/BitTorrentSpecification#Queuing"><SPAN=20

    386. 

  386.           class=3D"tocnumber">11.1</SPAN> <SPAN=20

    387. 

  387.           class=3D"toctext">Queuing</SPAN></A></LI>

    388. 

  388.           <LI class=3D"toclevel-2 tocsection-42"><A =

    389. 

  389. href=3D"http://wiki.theory.org/BitTorrentSpecification#Super_Seeding"><SP=

    390. 

  390. AN=20

    391. 

  391.           class=3D"tocnumber">11.2</SPAN> <SPAN class=3D"toctext">Super=20

    392. 

  392.           Seeding</SPAN></A></LI>

    393. 

  393.           <LI class=3D"toclevel-2 tocsection-43"><A =

    394. 

  394. href=3D"http://wiki.theory.org/BitTorrentSpecification#Piece_downloading_=

    395. 

  395. strategy"><SPAN=20

    396. 

  396.           class=3D"tocnumber">11.3</SPAN> <SPAN class=3D"toctext">Piece =

    397. 

  397. downloading=20

    398. 

  398.           strategy</SPAN></A></LI>

    399. 

  399.           <LI class=3D"toclevel-2 tocsection-44"><A =

    400. 

  400. href=3D"http://wiki.theory.org/BitTorrentSpecification#End_Game"><SPAN=20

    401. 

  401.           class=3D"tocnumber">11.4</SPAN> <SPAN class=3D"toctext">End=20

    402. 

  402.           Game</SPAN></A></LI>

    403. 

  403.           <LI class=3D"toclevel-2 tocsection-45"><A =

    404. 

  404. href=3D"http://wiki.theory.org/BitTorrentSpecification#Choking_and_Optimi=

    405. 

  405. stic_Unchoking"><SPAN=20

    406. 

  406.           class=3D"tocnumber">11.5</SPAN> <SPAN =

    407. 

  407. class=3D"toctext">Choking and=20

    408. 

  408.           Optimistic Unchoking</SPAN></A>

    409. 

  409.           <UL>

    410. 

  410.             <LI class=3D"toclevel-3 tocsection-46"><A =

    411. 

  411. href=3D"http://wiki.theory.org/BitTorrentSpecification#Anti-snubbing"><SP=

    412. 

  412. AN=20

    413. 

  413.             class=3D"tocnumber">11.5.1</SPAN> <SPAN=20

    414. 

  414.             =

    415. 

  415. class=3D"toctext">Anti-snubbing</SPAN></A></LI></UL></LI></UL></LI>

    416. 

  416.         <LI class=3D"toclevel-1 tocsection-47"><A =

    417. 

  417. href=3D"http://wiki.theory.org/BitTorrentSpecification#Official_Extension=

    418. 

  418. s_To_The_Protocol"><SPAN=20

    419. 

  419.         class=3D"tocnumber">12</SPAN> <SPAN class=3D"toctext">Official =

    420. 

  420. Extensions To=20

    421. 

  421.         The Protocol</SPAN></A>

    422. 

  422.         <UL>

    423. 

  423.           <LI class=3D"toclevel-2 tocsection-48"><A =

    424. 

  424. href=3D"http://wiki.theory.org/BitTorrentSpecification#Fast_Peers_Extensi=

    425. 

  425. ons"><SPAN=20

    426. 

  426.           class=3D"tocnumber">12.1</SPAN> <SPAN class=3D"toctext">Fast =

    427. 

  427. Peers=20

    428. 

  428.           Extensions</SPAN></A></LI>

    429. 

  429.           <LI class=3D"toclevel-2 tocsection-49"><A =

    430. 

  430. href=3D"http://wiki.theory.org/BitTorrentSpecification#Distributed_Hash_T=

    431. 

  431. able"><SPAN=20

    432. 

  432.           class=3D"tocnumber">12.2</SPAN> <SPAN =

    433. 

  433. class=3D"toctext">Distributed Hash=20

    434. 

  434.           Table</SPAN></A></LI>

    435. 

  435.           <LI class=3D"toclevel-2 tocsection-50"><A =

    436. 

  436. href=3D"http://wiki.theory.org/BitTorrentSpecification#Connection_Obfusca=

    437. 

  437. tion"><SPAN=20

    438. 

  438.           class=3D"tocnumber">12.3</SPAN> <SPAN =

    439. 

  439. class=3D"toctext">Connection=20

    440. 

  440.           Obfuscation</SPAN></A></LI></UL></LI>

    441. 

  441.         <LI class=3D"toclevel-1 tocsection-51"><A =

    442. 

  442. href=3D"http://wiki.theory.org/BitTorrentSpecification#Unofficial_Extensi=

    443. 

  443. ons_To_The_Protocol"><SPAN=20

    444. 

  444.         class=3D"tocnumber">13</SPAN> <SPAN class=3D"toctext">Unofficial =

    445. 

  445. Extensions=20

    446. 

  446.         To The Protocol</SPAN></A>

    447. 

  447.         <UL>

    448. 

  448.           <LI class=3D"toclevel-2 tocsection-52"><A =

    449. 

  449. href=3D"http://wiki.theory.org/BitTorrentSpecification#Azureus_Messaging_=

    450. 

  450. Protocol"><SPAN=20

    451. 

  451.           class=3D"tocnumber">13.1</SPAN> <SPAN =

    452. 

  452. class=3D"toctext">Azureus Messaging=20

    453. 

  453.           Protocol</SPAN></A></LI>

    454. 

  454.           <LI class=3D"toclevel-2 tocsection-53"><A =

    455. 

  455. href=3D"http://wiki.theory.org/BitTorrentSpecification#WebSeeding"><SPAN =

    456. 

  456. 

    457. 

  457.           class=3D"tocnumber">13.2</SPAN> <SPAN=20

    458. 

  458.           class=3D"toctext">WebSeeding</SPAN></A></LI>

    459. 

  459.           <LI class=3D"toclevel-2 tocsection-54"><A =

    460. 

  460. href=3D"http://wiki.theory.org/BitTorrentSpecification#Extension_protocol=

    461. 

  461. "><SPAN=20

    462. 

  462.           class=3D"tocnumber">13.3</SPAN> <SPAN =

    463. 

  463. class=3D"toctext">Extension=20

    464. 

  464.           protocol</SPAN></A></LI>

    465. 

  465.           <LI class=3D"toclevel-2 tocsection-55"><A =

    466. 

  466. href=3D"http://wiki.theory.org/BitTorrentSpecification#Extension_Negotiat=

    467. 

  467. ion_Protocol"><SPAN=20

    468. 

  468.           class=3D"tocnumber">13.4</SPAN> <SPAN =

    469. 

  469. class=3D"toctext">Extension=20

    470. 

  470.           Negotiation Protocol</SPAN></A></LI>

    471. 

  471.           <LI class=3D"toclevel-2 tocsection-56"><A =

    472. 

  472. href=3D"http://wiki.theory.org/BitTorrentSpecification#BitTorrent_Locatio=

    473. 

  473. n-aware_Protocol_1.0"><SPAN=20

    474. 

  474.           class=3D"tocnumber">13.5</SPAN> <SPAN =

    475. 

  475. class=3D"toctext">BitTorrent=20

    476. 

  476.           Location-aware Protocol 1.0</SPAN></A></LI>

    477. 

  477.           <LI class=3D"toclevel-2 tocsection-57"><A =

    478. 

  478. href=3D"http://wiki.theory.org/BitTorrentSpecification#SimpleBT_Extension=

    479. 

  479. _Protocol"><SPAN=20

    480. 

  480.           class=3D"tocnumber">13.6</SPAN> <SPAN =

    481. 

  481. class=3D"toctext">SimpleBT Extension=20

    482. 

  482.           Protocol</SPAN></A></LI>

    483. 

  483.           <LI class=3D"toclevel-2 tocsection-58"><A =

    484. 

  484. href=3D"http://wiki.theory.org/BitTorrentSpecification#BitComet_Extension=

    485. 

  485. _Protocol"><SPAN=20

    486. 

  486.           class=3D"tocnumber">13.7</SPAN> <SPAN =

    487. 

  487. class=3D"toctext">BitComet Extension=20

    488. 

  488.           Protocol</SPAN></A></LI></UL></LI>

    489. 

  489.         <LI class=3D"toclevel-1 tocsection-59"><A =

    490. 

  490. href=3D"http://wiki.theory.org/BitTorrentSpecification#Reserved_Bytes"><S=

    491. 

  491. PAN=20

    492. 

  492.         class=3D"tocnumber">14</SPAN> <SPAN class=3D"toctext">Reserved=20

    493. 

  493.         Bytes</SPAN></A></LI>

    494. 

  494.         <LI class=3D"toclevel-1 tocsection-60"><A =

    495. 

  495. href=3D"http://wiki.theory.org/BitTorrentSpecification#Change_Log"><SPAN =

    496. 

  496. 

    497. 

  497.         class=3D"tocnumber">15</SPAN> <SPAN class=3D"toctext">Change=20

    498. 

  498.         Log</SPAN></A></LI>

    499. 

  499.         <LI class=3D"toclevel-1 tocsection-61"><A =

    500. 

  500. href=3D"http://wiki.theory.org/BitTorrentSpecification#Related_Links"><SP=

    501. 

  501. AN=20

    502. 

  502.         class=3D"tocnumber">16</SPAN> <SPAN class=3D"toctext">Related=20

    503. 

  503.         Links</SPAN></A></LI></UL></TD></TR></TBODY></TABLE>

    504. 

  504. <SCRIPT>if (window.showTocToggle) { var tocShowText =3D "show"; var =

    505. 

  505. tocHideText =3D "hide"; showTocToggle(); } </SCRIPT>

    506. 

  506. 

    507. 

  507. <H2> <SPAN id=3D"Identification" class=3D"mw-headline"> Identification =

    508. 

  508. </SPAN></H2>

    509. 

  509. <P><A class=3D"new" title=3D"BitTorrent (page does not exist)" =

    510. 

  510. href=3D"http://wiki.theory.org/index.php?title=3DBitTorrent&amp;action=3D=

    511. 

  511. edit&amp;redlink=3D1">BitTorrent</A>=20

    512. 

  512. is a peer-to-peer file sharing protocol designed by Bram Cohen.  Visit =

    513. 

  513. his pages=20

    514. 

  514. at <A class=3D"external free" href=3D"http://www.bittorrent.com/"=20

    515. 

  515. rel=3D"nofollow">http://www.bittorrent.com/</A> BitTorrent is designed =

    516. 

  516. to=20

    517. 

  517. facilitate file transfers among multiple peers across unreliable =

    518. 

  518. networks.</P>

    519. 

  519. <H2> <SPAN id=3D"Purpose" class=3D"mw-headline"> Purpose </SPAN></H2>

    520. 

  520. <P>The purpose of this specification is to document version 1.0 of the=20

    521. 

  521. BitTorrent protocol specification in detail.  Bram's  <A =

    522. 

  522. class=3D"external text"=20

    523. 

  523. href=3D"http://bittorrent.org/beps/bep_0003.html" =

    524. 

  524. rel=3D"nofollow">protocol=20

    525. 

  525. specification page</A> outlines the protocol in somewhat general terms, =

    526. 

  526. and=20

    527. 

  527. lacks behaviorial detail in some areas.  The hope is that this document =

    528. 

  528. will=20

    529. 

  529. become a <B>formal</B> specification, written in clear, unambiguous =

    530. 

  530. terms, which=20

    531. 

  531. can be used as a basis for discussion and implementation in the =

    532. 

  532. future.</P>

    533. 

  533. <P>This document is intended to be maintained and used by the BitTorrent =

    534. 

  534. 

    535. 

  535. development community.  Everyone is invited to contribute to this =

    536. 

  536. document, with=20

    537. 

  537. the understanding that the content here is intended to represent the =

    538. 

  538. current=20

    539. 

  539. protocol (What if the current protocol is 2.0? The scope is then =

    540. 

  540. conflicting),=20

    541. 

  541. which is already deployed in a number of existing client =

    542. 

  542. implementations.</P>

    543. 

  543. <P>This is not the place to suggest feature requests.  For that, please =

    544. 

  544. go to=20

    545. 

  545. the <A class=3D"external text" =

    546. 

  546. href=3D"http://lists.ibiblio.org/mailman/listinfo/bittorrent"=20

    547. 

  547. rel=3D"nofollow">mailing list</A>.</P>

    548. 

  548. <H2> <SPAN id=3D"Scope" class=3D"mw-headline"> Scope </SPAN></H2>

    549. 

  549. <P>This document applies to the first version (i.e. version 1.0) of the=20

    550. 

  550. BitTorrent protocol specification. Currently, this applies to the =

    551. 

  551. torrent file=20

    552. 

  552. structure, peer wire protocol, and the Tracker HTTP/HTTPS protocol=20

    553. 

  553. specifications. As newer revisions of each protocol are defined, they =

    554. 

  554. should be=20

    555. 

  555. specified on their own separate pages, <B>not here</B>.</P>

    556. 

  556. <H2> <SPAN id=3D"Related_Documents" class=3D"mw-headline"> Related =

    557. 

  557. Documents=20

    558. 

  558. </SPAN></H2>

    559. 

  559. <UL>

    560. 

  560.   <LI> <A class=3D"external text" =

    561. 

  561. href=3D"http://bittorrent.org/beps/bep_0003.html"=20

    562. 

  562.   rel=3D"nofollow">Official protocol specification</A></LI>

    563. 

  563.   <LI> <A title=3D"BitTorrentWishList" =

    564. 

  564. href=3D"http://wiki.theory.org/BitTorrentWishList">Developer=20

    565. 

  565.   and user wishlist</A></LI>

    566. 

  566.   <LI> <A title=3D"BitTorrentTrackerExtensions" =

    567. 

  567. href=3D"http://wiki.theory.org/BitTorrentTrackerExtensions">Tracker=20

    568. 

  568.   protocol extensions</A></LI></UL>

    569. 

  569. <H2> <SPAN id=3D"Conventions" class=3D"mw-headline"> Conventions =

    570. 

  570. </SPAN></H2>

    571. 

  571. <P>In this document, a number of conventions are used in an attempt to =

    572. 

  572. present=20

    573. 

  573. information in a concise and unambiguous fashion.</P>

    574. 

  574. <UL>

    575. 

  575.   <LI> <I>peer</I> v/s <I>client</I>: In this document, a <I>peer</I> is =

    576. 

  576. any=20

    577. 

  577.   BitTorrent client participating in a download.  The <I>client</I> is =

    578. 

  578. also a=20

    579. 

  579.   peer, however it is the BitTorrent client that is running on the local =

    580. 

  580. 

    581. 

  581.   machine.  Readers of this specification may choose to think of =

    582. 

  582. themselves as=20

    583. 

  583.   the <I>client</I> which connects to numerous <I>peers</I>.</LI>

    584. 

  584.   <LI> <I>piece</I> v/s <I>block</I>: In this document, a <I>piece</I> =

    585. 

  585. refers to=20

    586. 

  586.   a portion of the downloaded data that is described in the metainfo =

    587. 

  587. file, which=20

    588. 

  588.   can be verified by a SHA1 hash.  A <I>block</I> is a portion of data =

    589. 

  589. that a=20

    590. 

  590.   <I>client</I> may request from at least one <I>peer</I>.  Two or more=20

    591. 

  591.   <I>blocks</I> make up a whole <I>piece</I>, which may then be =

    592. 

  592. verified.</LI>

    593. 

  593.   <LI> <I>defacto standard</I>: Large blocks of text in <I>italics</I> =

    594. 

  594. indicates=20

    595. 

  595.   a practice so common in various client implementations of BitTorrent =

    596. 

  596. that it=20

    597. 

  597.   is considered a defacto standard.</LI></UL>

    598. 

  598. <P>In order to help others find recent changes that have been made to =

    599. 

  599. this=20

    600. 

  600. document, please fill out the change log (last section).  This should =

    601. 

  601. contain a=20

    602. 

  602. brief (i.e. one-line) entry for each major change that you've made to =

    603. 

  603. the=20

    604. 

  604. document.</P>

    605. 

  605. <H2> <SPAN id=3D"Bencoding" class=3D"mw-headline"> Bencoding =

    606. 

  606. </SPAN></H2>

    607. 

  607. <P>Bencoding is a way to specify and organize data in a terse format.  =

    608. 

  608. It=20

    609. 

  609. supports the following types: byte strings, integers, lists, and =

    610. 

  610. dictionaries.

    611. 

  611. </P>

    612. 

  612. <H3> <SPAN id=3D"Bencoded_Strings" class=3D"mw-headline"> Bencoded =

    613. 

  613. Strings=20

    614. 

  614. </SPAN></H3>

    615. 

  615. <P>Bencoded strings are encoded as follows: <I>&lt;string length encoded =

    616. 

  616. in base=20

    617. 

  617. ten ASCII&gt;<B>:</B>&lt;string data&gt;</I>, or =

    618. 

  618. <I>key</I>:<I>value</I><BR>Note=20

    619. 

  619. that there is no constant beginning delimiter, and no ending =

    620. 

  620. delimiter.</P>

    621. 

  621. <DL>

    622. 

  622.   <DD><B>Example</B>: <I>4<B>:</B>spam</I> represents the string =

    623. 

  623. "spam"</DD></DL>

    624. 

  624. <H3> <SPAN id=3D"Integers" class=3D"mw-headline"> Integers </SPAN></H3>

    625. 

  625. <P>Integers are encoded as follows: <I><B>i</B>&lt;integer encoded in =

    626. 

  626. base ten=20

    627. 

  627. ASCII&gt;<B>e</B></I><BR>The initial <B>i</B> and trailing <B>e</B> are=20

    628. 

  628. beginning and ending delimiters. You can have negative numbers such as=20

    629. 

  629. <I><B>i</B>-3<B>e</B></I>. Only the significant digits should be used, =

    630. 

  630. one=20

    631. 

  631. cannot pad the Integer with zeroes. such as <I><B>i</B>04<B>e</B></I>.  =

    632. 

  632. However,=20

    633. 

  633. <I><B>i</B>0<B>e</B></I> is valid.</P>

    634. 

  634. <DL>

    635. 

  635.   <DD><B>Example</B>: <I><B>i</B>3<B>e</B></I> represents the integer =

    636. 

  636. "3"

    637. 

  637. </DD></DL>

    638. 

  638. <UL>

    639. 

  639.   <LI> <I>NOTE:</I> The maximum number of bit of this integer is =

    640. 

  640. unspecified,=20

    641. 

  641.   but to handle it as a signed 64bit integer is mandatory to handle =

    642. 

  642. "large=20

    643. 

  643.   files" aka .torrent for more that 4Gbyte.</LI></UL>

    644. 

  644. <H3> <SPAN id=3D"Lists" class=3D"mw-headline"> Lists </SPAN></H3>

    645. 

  645. <P>Lists are encoded as follows: <I><B>l</B>&lt;bencoded=20

    646. 

  646. values&gt;<B>e</B></I><BR>The initial <B>l</B> and trailing <B>e</B> are =

    647. 

  647. 

    648. 

  648. beginning and ending delimiters. Lists may contain any bencoded type, =

    649. 

  649. including=20

    650. 

  650. integers, strings, dictionaries, and even lists within other lists.</P>

    651. 

  651. <DL>

    652. 

  652.   <DD><B>Example:</B> <I><B>l</B>4:spam4:eggs<B>e</B></I> represents the =

    653. 

  653. list of=20

    654. 

  654.   two strings: [ "spam", "eggs" ]</DD></DL>

    655. 

  655. <H3> <SPAN id=3D"Dictionaries" class=3D"mw-headline"> Dictionaries =

    656. 

  656. </SPAN></H3>

    657. 

  657. <P>Dictionaries are encoded as follows: <I><B>d</B>&lt;bencoded=20

    658. 

  658. string&gt;&lt;bencoded element&gt;<B>e</B></I> <BR>The initial <B>d</B> =

    659. 

  659. and=20

    660. 

  660. trailing <B>e</B> are the beginning and ending delimiters. Note that the =

    661. 

  661. keys=20

    662. 

  662. must be bencoded strings.  The values may be any bencoded type, =

    663. 

  663. including=20

    664. 

  664. integers, strings, lists, and other dictionaries.  Keys must be strings =

    665. 

  665. and=20

    666. 

  666. appear in sorted order (sorted as raw strings, not alphanumerics). The =

    667. 

  667. strings=20

    668. 

  668. should be compared using a binary  comparison, not a culture-specific =

    669. 

  669. "natural"=20

    670. 

  670. comparison.</P>

    671. 

  671. <DL>

    672. 

  672.   <DD><B>Example</B>: <I><B>d</B>3:cow3:moo4:spam4:eggs<B>e</B> =

    673. 

  673. represents the=20

    674. 

  674.   dictionary { "cow" =3D&gt; "moo", "spam" =3D&gt; "eggs" } =

    675. 

  675. <BR></I></DD>

    676. 

  676.   <DD><B>Example</B>: <I><B>d</B>4:spaml1:a1:b<B>ee'</B> represents the=20

    677. 

  677.   dictionary { "spam" =3D&gt; [ "a", "b" ] } <BR></I></DD>

    678. 

  678.   <DD><B>Example</B>:=20

    679. 

  679.   =

    680. 

  680. <I><B>d</B>9:publisher3:bob17:publisher-webpage15:www.example.com18:publi=

    681. 

  681. sher.location4:home<B>e</B></I>=20

    682. 

  682.   represents { "publisher" =3D&gt; "bob", "publisher-webpage" =3D&gt;=20

    683. 

  683.   "www.example.com", "publisher.location" =3D&gt; "home" }</DD></DL>

    684. 

  684. <H3> <SPAN id=3D"Implementations" class=3D"mw-headline"> Implementations =

    685. 

  685. 

    686. 

  686. </SPAN></H3>

    687. 

  687. <UL>

    688. 

  688.   <LI> <A class=3D"external text" =

    689. 

  689. href=3D"http://funzix.git.sourceforge.net/git/gitweb.cgi?p=3Dfunzix/funzi=

    690. 

  690. x;a=3Dblob;f=3Dbencode/bencode.c"=20

    691. 

  691.   rel=3D"nofollow">C</A> by <A class=3D"new" title=3D"User:Vapier (page =

    692. 

  692. does not exist)"=20

    693. 

  693.   =

    694. 

  694. href=3D"http://wiki.theory.org/index.php?title=3DUser:Vapier&amp;action=3D=

    695. 

  695. edit&amp;redlink=3D1">Mike=20

    696. 

  696.   Frysinger</A></LI>

    697. 

  697.   <LI> <A class=3D"external text" =

    698. 

  698. href=3D"http://search.cpan.org/dist/Convert-Bencode/lib/Convert/Bencode.p=

    699. 

  699. m"=20

    700. 

  700.   rel=3D"nofollow">Perl</A></LI>

    701. 

  701.   <LI> <A class=3D"external text" =

    702. 

  702. href=3D"http://www.koders.com/java/fid47111A56F2466C232E09AEF75A39915EC70=

    703. 

  703. D3536.aspx#L52"=20

    704. 

  704.   rel=3D"nofollow">Java</A></LI>

    705. 

  705.   <LI> <A title=3D"Decoding bencoded data with python" =

    706. 

  706. href=3D"http://wiki.theory.org/Decoding_bencoded_data_with_python">Python=

    707. 

  707. </A>=20

    708. 

  708.   by <A class=3D"new" title=3D"User:Hackeron (page does not exist)" =

    709. 

  709. href=3D"http://wiki.theory.org/index.php?title=3DUser:Hackeron&amp;action=

    710. 

  710. =3Dedit&amp;redlink=3D1">Hackeron</A>

    711. 

  711.   </LI>

    712. 

  712.   <LI> <A title=3D"Decoding encoding bencoded data with haskell" =

    713. 

  713. href=3D"http://wiki.theory.org/Decoding_encoding_bencoded_data_with_haske=

    714. 

  714. ll">Decoding=20

    715. 

  715.   encoding bencoded data with haskell</A> by <A class=3D"new" =

    716. 

  716. title=3D"User:Edi (page does not exist)"=20

    717. 

  717.   =

    718. 

  718. href=3D"http://wiki.theory.org/index.php?title=3DUser:Edi&amp;action=3Ded=

    719. 

  719. it&amp;redlink=3D1">Edi</A>

    720. 

  720.   </LI>

    721. 

  721.   <LI> <A class=3D"external text" =

    722. 

  722. href=3D"http://www.stupendous.net/projects/bencoding-obj-c-class/"=20

    723. 

  723.   rel=3D"nofollow">Objective-C</A> by <A class=3D"new" =

    724. 

  724. title=3D"User:Chrome (page does not exist)"=20

    725. 

  725.   =

    726. 

  726. href=3D"http://wiki.theory.org/index.php?title=3DUser:Chrome&amp;action=3D=

    727. 

  727. edit&amp;redlink=3D1">Chrome</A>

    728. 

  728.   </LI>

    729. 

  729.   <LI> <A title=3D"JScript: Converting a torrent file to a JScript =

    730. 

  730. dictionary"=20

    731. 

  731.   =

    732. 

  732. href=3D"http://wiki.theory.org/JScript:_Converting_a_torrent_file_to_a_JS=

    733. 

  733. cript_dictionary">JScript</A>=20

    734. 

  734.   by <A class=3D"new" title=3D"User:Sergej B. (page does not exist)" =

    735. 

  735. href=3D"http://wiki.theory.org/index.php?title=3DUser:Sergej_B.&amp;actio=

    736. 

  736. n=3Dedit&amp;redlink=3D1">Sergej=20

    737. 

  737.   B.</A></LI>

    738. 

  738.   <LI> <A class=3D"external text" =

    739. 

  739. href=3D"http://demon.tw/my-work/javascript-bencode.html"=20

    740. 

  740.   rel=3D"nofollow">JavaScript</A> by <A class=3D"external text" =

    741. 

  741. href=3D"http://demon.tw/"=20

    742. 

  742.   rel=3D"nofollow">Demon</A>]</LI>

    743. 

  743.   <LI> <A class=3D"external text" =

    744. 

  744. href=3D"http://demon.tw/my-work/vbs-bencode.html"=20

    745. 

  745.   rel=3D"nofollow">VBScript</A> by <A class=3D"external text" =

    746. 

  746. href=3D"http://demon.tw/"=20

    747. 

  747.   rel=3D"nofollow">Demon</A>]</LI>

    748. 

  748.   <LI> <A class=3D"external text" =

    749. 

  749. href=3D"http://nakkaya.com/2009/11/02/decoding-bencoded-streams-in-clojur=

    750. 

  750. e/"=20

    751. 

  751.   rel=3D"nofollow">Clojure</A> by <A class=3D"new" title=3D"User:Nakkaya =

    752. 

  752. (page does not exist)"=20

    753. 

  753.   =

    754. 

  754. href=3D"http://wiki.theory.org/index.php?title=3DUser:Nakkaya&amp;action=3D=

    755. 

  755. edit&amp;redlink=3D1">nakkaya</A>

    756. 

  756.   </LI>

    757. 

  757.   <LI> <A title=3D"Decoding encoding bencoded data with erlang" =

    758. 

  758. href=3D"http://wiki.theory.org/Decoding_encoding_bencoded_data_with_erlan=

    759. 

  759. g">Erlang</A>

    760. 

  760.   </LI>

    761. 

  761.   <LI> <A title=3D"Decoding encoding bencoded data with PHP" =

    762. 

  762. href=3D"http://wiki.theory.org/Decoding_encoding_bencoded_data_with_PHP">=

    763. 

  763. PHP</A>

    764. 

  764.   </LI>

    765. 

  765.   <LI> <A class=3D"external text" =

    766. 

  766. href=3D"http://code.google.com/p/php-bencode-extension/"=20

    767. 

  767.   rel=3D"nofollow">PHP Extension</A></LI>

    768. 

  768.   <LI> <A class=3D"external text" =

    769. 

  769. href=3D"http://snipplr.com/view/37790/bencoding-encoder-and-decoder/"=20

    770. 

  770.   rel=3D"nofollow">C#</A> by <A class=3D"new" title=3D"User:SuprDewd =

    771. 

  771. (page does not exist)"=20

    772. 

  772.   =

    773. 

  773. href=3D"http://wiki.theory.org/index.php?title=3DUser:SuprDewd&amp;action=

    774. 

  774. =3Dedit&amp;redlink=3D1">SuprDewd</A>

    775. 

  775.   </LI>

    776. 

  776.   <LI> <A class=3D"external text" =

    777. 

  777. href=3D"http://cvs.savannah.gnu.org/viewvc/mldonkey/mldonkey/src/networks=

    778. 

  778. /bittorrent/bencode.ml?view=3Dmarkup"=20

    779. 

  779.   rel=3D"nofollow">OCaml</A> by <A class=3D"external text" =

    780. 

  780. href=3D"http://mldonkey.sourceforge.net/Main_Page"=20

    781. 

  781.   rel=3D"nofollow">MLDonkey</A></LI>

    782. 

  782.   <LI> <A class=3D"external text" =

    783. 

  783. href=3D"https://github.com/jsz/gorrent/tree/master/bencode"=20

    784. 

  784.   rel=3D"nofollow">Go</A> by <A class=3D"external text" =

    785. 

  785. href=3D"http://jsz.github.com/"=20

    786. 

  786.   rel=3D"nofollow">Leon Szpilewski</A></LI></UL>

    787. 

  787. <H2> <SPAN id=3D"Metainfo_File_Structure" class=3D"mw-headline"> =

    788. 

  788. Metainfo File=20

    789. 

  789. Structure </SPAN></H2>

    790. 

  790. <P>All data in a metainfo file is bencoded.  The specification for =

    791. 

  791. bencoding is=20

    792. 

  792. defined above.</P>

    793. 

  793. <P>The content of a metainfo file (the file ending in ".torrent") is a =

    794. 

  794. bencoded=20

    795. 

  795. dictionary, containing the keys listed below. All character string =

    796. 

  796. values are=20

    797. 

  797. UTF-8 encoded.</P>

    798. 

  798. <UL>

    799. 

  799.   <LI> <B>info</B>: a dictionary that describes the file(s) of the =

    800. 

  800. torrent. =20

    801. 

  801.   There are two possible forms: one for the case of a 'single-file' =

    802. 

  802. torrent with=20

    803. 

  803.   no directory structure, and one for the case of a 'multi-file' torrent =

    804. 

  804. (see=20

    805. 

  805.   below for details)</LI>

    806. 

  806.   <LI> <B>announce</B>: The announce URL of the tracker (string)</LI>

    807. 

  807.   <LI> <B>announce-list</B>: (optional) this is an extention to the =

    808. 

  808. official=20

    809. 

  809.   specification, offering backwards-compatibility.  (list of lists of =

    810. 

  810. strings).

    811. 

  811.   <UL>

    812. 

  812.     <LI>The official request for a specification change is <A =

    813. 

  813. class=3D"external text"=20

    814. 

  814.     href=3D"http://bittorrent.org/beps/bep_0012.html" =

    815. 

  815. rel=3D"nofollow">here</A>.

    816. 

  816.   </LI></UL></LI>

    817. 

  817.   <LI> <B>creation date</B>: (optional) the creation time of the =

    818. 

  818. torrent, in=20

    819. 

  819.   standard UNIX epoch format (integer, seconds since 1-Jan-1970 00:00:00 =

    820. 

  820. UTC)

    821. 

  821.   </LI>

    822. 

  822.   <LI> <B>comment</B>: (optional) free-form textual comments of the =

    823. 

  823. author=20

    824. 

  824.   (string)</LI>

    825. 

  825.   <LI> <B>created by</B>: (optional) name and version of the program =

    826. 

  826. used to=20

    827. 

  827.   create the .torrent (string)</LI>

    828. 

  828.   <LI> <B>encoding</B>: (optional) the string encoding format used to =

    829. 

  829. generate=20

    830. 

  830.   the <B>pieces</B> part of the <B>info</B> dictionary in the .torrent =

    831. 

  831. metafile=20

    832. 

  832.   (string)</LI></UL>

    833. 

  833. <H3> <SPAN id=3D"Info_Dictionary" class=3D"mw-headline">Info =

    834. 

  834. Dictionary</SPAN></H3>

    835. 

  835. <P>This section contains the field which are common to both mode, =

    836. 

  836. "single file"=20

    837. 

  837. and "multiple file".</P>

    838. 

  838. <UL>

    839. 

  839.   <LI> <B>piece length</B>: number of bytes in each piece (integer)</LI>

    840. 

  840.   <LI> <B>pieces</B>: string consisting of the concatenation of all =

    841. 

  841. 20-byte SHA1=20

    842. 

  842.   hash values, one per piece (byte string, i.e. not urlencoded)</LI>

    843. 

  843.   <LI> <B>private</B>: (optional) this field is an integer. If it is set =

    844. 

  844. to "1",=20

    845. 

  845.   the client MUST publish its presence to get other peers ONLY via the =

    846. 

  846. trackers=20

    847. 

  847.   explicitly described in the metainfo file. If this field is set to "0" =

    848. 

  848. or is=20

    849. 

  849.   not present, the client may obtain peer from other means, e.g. PEX =

    850. 

  850. peer=20

    851. 

  851.   exchange, dht. Here, "private" may be read as "no external peer =

    852. 

  852. source".

    853. 

  853.   <UL>

    854. 

  854.     <LI> <B>NOTE:</B> There is much debate surrounding private =

    855. 

  855. trackers.</LI>

    856. 

  856.     <LI> The official request for a specification change is <A =

    857. 

  857. class=3D"external text"=20

    858. 

  858.     href=3D"http://bittorrent.org/beps/bep_0027.html" =

    859. 

  859. rel=3D"nofollow">here</A>.

    860. 

  860. </LI>

    861. 

  861.     <LI> Azureus was the first client to respect private trackers, <A =

    862. 

  862. class=3D"external text"=20

    863. 

  863.     href=3D"http://www.azureuswiki.com/index.php/Secure_Torrents"=20

    864. 

  864.     rel=3D"nofollow">see their wiki</A> for more =

    865. 

  865. details.</LI></UL></LI></UL>

    866. 

  866. <H4> <SPAN id=3D"Info_in_Single_File_Mode" class=3D"mw-headline">Info in =

    867. 

  867. Single File=20

    868. 

  868. Mode</SPAN></H4>

    869. 

  869. <P>For the case of the <B>single-file</B> mode, the <B>info</B> =

    870. 

  870. dictionary=20

    871. 

  871. contains the following structure:</P>

    872. 

  872. <UL>

    873. 

  873.   <LI> <B>name</B>: the filename.  This is purely advisory. =

    874. 

  874. (string)</LI>

    875. 

  875.   <LI> <B>length</B>: length of the file in bytes (integer)</LI>

    876. 

  876.   <LI> <B>md5sum</B>: (optional) a 32-character hexadecimal string =

    877. 

  877. corresponding=20

    878. 

  878.   to the MD5 sum of the file.  This is not used by BitTorrent at all, =

    879. 

  879. but it is=20

    880. 

  880.   included by some programs for greater compatibility.</LI></UL>

    881. 

  881. <H4> <SPAN id=3D"Info_in_Multiple_File_Mode" class=3D"mw-headline">Info =

    882. 

  882. in Multiple=20

    883. 

  883. File Mode</SPAN></H4>

    884. 

  884. <P>For the case of the <B>multi-file</B> mode, the <B>info</B> =

    885. 

  885. dictionary=20

    886. 

  886. contains the following structure:</P>

    887. 

  887. <UL>

    888. 

  888.   <LI> <B>name</B>: the file path of the directory in which to store all =

    889. 

  889. the=20

    890. 

  890.   files.  This is purely advisory. (string)</LI>

    891. 

  891.   <LI> <B>files</B>: a list of dictionaries, one for each file. Each =

    892. 

  892. dictionary=20

    893. 

  893.   in this list contains the following keys:

    894. 

  894.   <UL>

    895. 

  895.     <LI> <B>length</B>: length of the file in bytes (integer)</LI>

    896. 

  896.     <LI> <B>md5sum</B>: (optional) a 32-character hexadecimal string=20

    897. 

  897.     corresponding to the MD5 sum of the file.  This is not used by =

    898. 

  898. BitTorrent at=20

    899. 

  899.     all, but it is included by some programs for greater =

    900. 

  900. compatibility.</LI>

    901. 

  901.     <LI> <B>path</B>: a list containing one or more string elements that =

    902. 

  902. 

    903. 

  903.     together represent the path and filename.  Each element in the list=20

    904. 

  904.     corresponds to either a directory name or (in the case of the final =

    905. 

  905. element)=20

    906. 

  906.     the filename.  For example, a the file "dir1/dir2/file.ext" would =

    907. 

  907. consist of=20

    908. 

  908.     three string elements: "dir1", "dir2", and "file.ext".  This is =

    909. 

  909. encoded as a=20

    910. 

  910.     bencoded list of strings such as=20

    911. 

  911.     =

    912. 

  912. <I>l<B>4</B>:dir1<B>4</B>:dir2<B>8</B>:file.ext<B>e</B></I></LI></UL></LI=

    913. 

  913. ></UL>

    914. 

  914. <H3> <SPAN id=3D"Notes" class=3D"mw-headline">Notes</SPAN></H3>

    915. 

  915. <UL>

    916. 

  916.   <LI> The <B>piece length</B> specifies the nominal piece size, and is =

    917. 

  917. usually=20

    918. 

  918.   a power of 2.  The piece size is typically chosen based on the total =

    919. 

  919. amount of=20

    920. 

  920.   file data in the torrent, and is constrained by the fact that =

    921. 

  921. too-large piece=20

    922. 

  922.   sizes cause inefficiency, and too-small piece sizes cause large =

    923. 

  923. .torrent=20

    924. 

  924.   metadata file.  Historically, piece size was chosen to result in a =

    925. 

  925. .torrent=20

    926. 

  926.   file no greater than approx. 50 - 75 kB (presumably to ease the load =

    927. 

  927. on the=20

    928. 

  928.   server hosting the torrent files). =20

    929. 

  929.   <UL>

    930. 

  930.     <LI>Current best-practice is to <I>keep the piece size to 512KB or =

    931. 

  931. less,</I>=20

    932. 

  932.     for torrents around 8-10GB, even if that results in a larger =

    933. 

  933. .torrent file. =20

    934. 

  934.     This results in a more efficient swarm for sharing files.   The most =

    935. 

  935. common=20

    936. 

  936.     sizes are 256 kB, 512 kB, and 1 MB.  </LI>

    937. 

  937.     <LI>Every piece is of equal length except for the final piece, which =

    938. 

  938. is=20

    939. 

  939.     irregular.  The number of pieces is thus determined by 'ceil( total =

    940. 

  940. length /=20

    941. 

  941.     piece size )'.  </LI>

    942. 

  942.     <LI>For the purposes of piece boundaries in the multi-file case, =

    943. 

  943. consider=20

    944. 

  944.     the file data as one long continuous stream, composed of the =

    945. 

  945. concatenation=20

    946. 

  946.     of each file in the order listed in the <I>files</I> list.  The =

    947. 

  947. number of=20

    948. 

  948.     pieces and their boundaries are then determined in the same manner =

    949. 

  949. as the=20

    950. 

  950.     case of a single file.  Pieces may overlap file =

    951. 

  951. boundaries.</LI></UL></LI>

    952. 

  952.   <LI> Each piece has a corresponding SHA1 hash of the data contained =

    953. 

  953. within=20

    954. 

  954.   that piece.  These hashes are concatenated to form the <I>pieces<B> =

    955. 

  955. value in=20

    956. 

  956.   the above </B></I><B>info</B> dictionary.  Note that this is =

    957. 

  957. <B>not</B> a list=20

    958. 

  958.   but rather a single string. The length of the string must be a =

    959. 

  959. multiple of 20.

    960. 

  960.   </LI></UL>

    961. 

  961. <H2> <SPAN id=3D"Tracker_HTTP.2FHTTPS_Protocol" class=3D"mw-headline"> =

    962. 

  962. Tracker=20

    963. 

  963. HTTP/HTTPS Protocol </SPAN></H2>

    964. 

  964. <P>The tracker is an HTTP/HTTPS service which responds to HTTP GET =

    965. 

  965. requests. The=20

    966. 

  966. requests include metrics from clients that help the tracker keep overall =

    967. 

  967. 

    968. 

  968. statistics about the torrent. The response includes a peer list that =

    969. 

  969. helps the=20

    970. 

  970. client participate in the torrent. The base URL consists of the =

    971. 

  971. "announce URL"=20

    972. 

  972. as defined in the metainfo (.torrent) file.  The parameters are then =

    973. 

  973. added to=20

    974. 

  974. this URL, using standard CGI methods (i.e. a '?' after the announce URL, =

    975. 

  975. 

    976. 

  976. followed by 'param=3Dvalue' sequences separated by '&amp;').</P>

    977. 

  977. <P>Note that all binary data in the URL (particularly info_hash and =

    978. 

  978. peer_id)=20

    979. 

  979. must be properly escaped.  This means any byte not in the set 0-9, a-z, =

    980. 

  980. A-Z,=20

    981. 

  981. '.', '-', '_' and '~', must be encoded using the "%nn" format, where nn =

    982. 

  982. is the=20

    983. 

  983. hexadecimal value of the byte. (See <A class=3D"external text" =

    984. 

  984. href=3D"http://www.faqs.org/rfcs/rfc1738.html"=20

    985. 

  985. rel=3D"nofollow">RFC1738</A> for details.) </P>

    986. 

  986. <P>For a 20-byte hash of=20

    987. 

  987. \x12\x34\x56\x78\x9a\xbc\xde\xf1\x23\x45\x67\x89\xab\xcd\xef\x12\x34\x56\=

    988. 

  988. x78\x9a,<BR>

    989. 

  989. The right encoded form =

    990. 

  990. is&nbsp;%124Vx%9A%BC%DE%F1%23Eg%89%AB%CD%EF%124Vx%9A</P>

    991. 

  991. <H3> <SPAN id=3D"Tracker_Request_Parameters" =

    992. 

  992. class=3D"mw-headline">Tracker Request=20

    993. 

  993. Parameters</SPAN></H3>

    994. 

  994. <P>The parameters used in the client-&gt;tracker GET request are as =

    995. 

  995. follows:</P>

    996. 

  996. <UL>

    997. 

  997.   <LI> <B>info_hash</B>: urlencoded 20-byte SHA1 hash of the =

    998. 

  998. <I>value</I> of the=20

    999. 

  999.   <I>info</I> key from the Metainfo file.  Note that the <I>value</I> =

    1000. 

  1000. will be a=20

    1001. 

  1001.   bencoded dictionary, given the definition of the <I>info</I> key =

    1002. 

  1002. above. </LI>

    1003. 

  1003.   <LI> <B><A=20

    1004. 

  1004.   =

    1005. 

  1005. href=3D"http://wiki.theory.org/BitTorrentSpecification#peer_id">peer_id</=

    1006. 

  1006. A></B>:=20

    1007. 

  1007.   urlencoded 20-byte string used as a unique ID for the client, =

    1008. 

  1008. generated by the=20

    1009. 

  1009.   client at startup.  This is allowed to be any value, and may be binary =

    1010. 

  1010. data. =20

    1011. 

  1011.   <I>There are currently no guidelines for generating this peer ID.  =

    1012. 

  1012. However,=20

    1013. 

  1013.   one may rightly presume that it must at least be unique for your local =

    1014. 

  1014. 

    1015. 

  1015.   machine, thus should probably incorporate things like process ID and =

    1016. 

  1016. perhaps a=20

    1017. 

  1017.   timestamp recorded at startup. See <A =

    1018. 

  1018. href=3D"http://wiki.theory.org/BitTorrentSpecification#peer_id">peer_id=20

    1019. 

  1019.   </A> below for common client encodings of this field.</I></LI>

    1020. 

  1020.   <LI> <B>port</B>: The port number that the client is listening on.  =

    1021. 

  1021. Ports=20

    1022. 

  1022.   reserved for BitTorrent are typically 6881-6889.  Clients may choose =

    1023. 

  1023. to give=20

    1024. 

  1024.   up if it cannot establish a port within this range.</LI>

    1025. 

  1025.   <LI> <B>uploaded</B>: The total amount uploaded (since the client sent =

    1026. 

  1026. the=20

    1027. 

  1027.   'started' event to the tracker) in base ten ASCII.  While not =

    1028. 

  1028. explicitly=20

    1029. 

  1029.   stated in the official specification, the concensus is that this =

    1030. 

  1030. should be the=20

    1031. 

  1031.   total number of bytes uploaded.</LI>

    1032. 

  1032.   <LI> <B>downloaded</B>: The total amount downloaded (since the client =

    1033. 

  1033. sent the=20

    1034. 

  1034.   'started' event to the tracker) in base ten ASCII.  While not =

    1035. 

  1035. explicitly=20

    1036. 

  1036.   stated in the official specification, the consensus is that this =

    1037. 

  1037. should be the=20

    1038. 

  1038.   total number of bytes downloaded.</LI>

    1039. 

  1039.   <LI> <B>left</B>: The number of bytes this client still has to =

    1040. 

  1040. download in=20

    1041. 

  1041.   base ten ASCII.</LI>

    1042. 

  1042.   <LI> <B>compact</B>: Setting this to 1 indicates that the client =

    1043. 

  1043. accepts a=20

    1044. 

  1044.   compact response. The announce-list is replaced by a peers string with =

    1045. 

  1045. 6 bytes=20

    1046. 

  1046.   per peer. The first four bytes are the host (in network byte order), =

    1047. 

  1047. the last=20

    1048. 

  1048.   two bytes are the port (again in network byte order). It should be =

    1049. 

  1049. noted that=20

    1050. 

  1050.   some trackers only support compact responses (for saving bandwidth) =

    1051. 

  1051. and either=20

    1052. 

  1052.   refuse requests without "compact=3D1" or simply send a compact =

    1053. 

  1053. response unless=20

    1054. 

  1054.   the request contains "compact=3D0" (in which case they will refuse the =

    1055. 

  1055. request.)

    1056. 

  1056.   </LI>

    1057. 

  1057.   <LI> <B>no_peer_id</B>: Indicates that the tracker can omit peer id =

    1058. 

  1058. field in=20

    1059. 

  1059.   announce-list dictionary. This option is ignored if compact is =

    1060. 

  1060. enabled.</LI>

    1061. 

  1061.   <LI> <B>event</B>: If specified, must be one of <I>started</I>,=20

    1062. 

  1062.   <I>completed</I>, <I>stopped</I>, (or empty which is the same as not =

    1063. 

  1063. being=20

    1064. 

  1064.   specified).  If not specified, then this request is one performed at =

    1065. 

  1065. regular=20

    1066. 

  1066.   intervals.

    1067. 

  1067.   <UL>

    1068. 

  1068.     <LI> <B>started</B>: The first request to the tracker <I>must</I> =

    1069. 

  1069. include=20

    1070. 

  1070.     the event key with this value.</LI>

    1071. 

  1071.     <LI> <B>stopped</B>: Must be sent to the tracker if the client is =

    1072. 

  1072. shutting=20

    1073. 

  1073.     down gracefully.</LI>

    1074. 

  1074.     <LI> <B>completed</B>: Must be sent to the tracker when the download =

    1075. 

  1075. 

    1076. 

  1076.     completes.  However, must not be sent if the download was already =

    1077. 

  1077. 100%=20

    1078. 

  1078.     complete when the client started.  Presumably, this is to allow the =

    1079. 

  1079. tracker=20

    1080. 

  1080.     to increment the "completed downloads" metric based solely on this =

    1081. 

  1081. event.

    1082. 

  1082.     </LI></UL></LI>

    1083. 

  1083.   <LI> <B>ip</B>: Optional.  The true IP address of the client machine, =

    1084. 

  1084. in=20

    1085. 

  1085.   dotted quad format or rfc3513 defined hexed IPv6 address.  <I>Notes: =

    1086. 

  1086. In=20

    1087. 

  1087.   general this parameter is not necessary as the address of the client =

    1088. 

  1088. can be=20

    1089. 

  1089.   determined from the IP address from which the HTTP request came.  The=20

    1090. 

  1090.   parameter is only needed in the case where the IP address that the =

    1091. 

  1091. request=20

    1092. 

  1092.   came in on is not the IP address of the client.  This happens if the =

    1093. 

  1093. client is=20

    1094. 

  1094.   communicating to the tracker through a proxy (or a transparent web=20

    1095. 

  1095.   proxy/cache.)  It also is necessary when both the client and the =

    1096. 

  1096. tracker are=20

    1097. 

  1097.   on the same local side of a NAT gateway.  The reason for this is that=20

    1098. 

  1098.   otherwise the tracker would give out the internal (RFC1918) address of =

    1099. 

  1099. the=20

    1100. 

  1100.   client, which is not routable.  Therefore the client must explicitly =

    1101. 

  1101. state its=20

    1102. 

  1102.   (external, routable) IP address to be given out to external peers.  =

    1103. 

  1103. Various=20

    1104. 

  1104.   trackers treat this parameter differently.  Some only honor it only if =

    1105. 

  1105. the IP=20

    1106. 

  1106.   address that the request came in on is in RFC1918 space.  Others honor =

    1107. 

  1107. it=20

    1108. 

  1108.   unconditionally, while others ignore it completely. In case of IPv6 =

    1109. 

  1109. address=20

    1110. 

  1110.   (e.g.: 2001:db8:1:2::100) it indicates only that client can =

    1111. 

  1111. communicate via=20

    1112. 

  1112.   IPv6.</I></LI>

    1113. 

  1113.   <LI> <B>numwant</B>: Optional.  Number of peers that the client would =

    1114. 

  1114. like to=20

    1115. 

  1115.   receive from the tracker.  This value is permitted to be zero.  If =

    1116. 

  1116. omitted,=20

    1117. 

  1117.   typically defaults to 50 peers.</LI>

    1118. 

  1118.   <LI> <B>key</B>: Optional. An additional client identification =

    1119. 

  1119. mechanism that=20

    1120. 

  1120.   is not shared with any peers. It is intended to allow a client to =

    1121. 

  1121. prove their=20

    1122. 

  1122.   identity should their IP address change.</LI>

    1123. 

  1123.   <LI> <B>trackerid</B>: Optional. If a previous announce contained a =

    1124. 

  1124. tracker=20

    1125. 

  1125.   id, it should be set here.</LI></UL>

    1126. 

  1126. <H3> <SPAN id=3D"Tracker_Response" class=3D"mw-headline">Tracker=20

    1127. 

  1127. Response</SPAN></H3>

    1128. 

  1128. <P>The tracker responds with "text/plain" document consisting of a =

    1129. 

  1129. bencoded=20

    1130. 

  1130. dictionary with the following keys:</P>

    1131. 

  1131. <UL>

    1132. 

  1132.   <LI> <B>failure reason</B>: If present, then no other keys may be =

    1133. 

  1133. present. =20

    1134. 

  1134.   The value is a human-readable error message as to why the request =

    1135. 

  1135. failed=20

    1136. 

  1136.   (string).</LI>

    1137. 

  1137.   <LI> <B>warning message</B>: (new, optional) Similar to failure =

    1138. 

  1138. reason, but=20

    1139. 

  1139.   the response still gets processed normally. The warning message is =

    1140. 

  1140. shown just=20

    1141. 

  1141.   like an error.</LI>

    1142. 

  1142.   <LI> <B>interval</B>: Interval in seconds that the client should wait =

    1143. 

  1143. between=20

    1144. 

  1144.   sending regular requests to the tracker</LI>

    1145. 

  1145.   <LI> <B>min interval</B>: (optional) Minimum announce interval. If =

    1146. 

  1146. present=20

    1147. 

  1147.   clients must not reannounce more frequently than this.</LI>

    1148. 

  1148.   <LI> <B>tracker id</B>: A string that the client should send back on =

    1149. 

  1149. its next=20

    1150. 

  1150.   announcements. If absent and a previous announce sent a tracker id, do =

    1151. 

  1151. not=20

    1152. 

  1152.   discard the old value; keep using it.</LI>

    1153. 

  1153.   <LI> <B>complete</B>: number of peers with the entire file, i.e. =

    1154. 

  1154. seeders=20

    1155. 

  1155.   (integer)</LI>

    1156. 

  1156.   <LI> <B>incomplete</B>: number of non-seeder peers, aka "leechers" =

    1157. 

  1157. (integer)

    1158. 

  1158.   </LI>

    1159. 

  1159.   <LI> <B>peers</B>: (dictionary model) The value is a list of =

    1160. 

  1160. dictionaries,=20

    1161. 

  1161.   each with the following keys:

    1162. 

  1162.   <UL>

    1163. 

  1163.     <LI> <B>peer id</B>: peer's self-selected ID, as described above for =

    1164. 

  1164. the=20

    1165. 

  1165.     tracker request (string)</LI>

    1166. 

  1166.     <LI> <B>ip</B>: peer's IP address either IPv6 (hexed) or IPv4 =

    1167. 

  1167. (dotted quad)=20

    1168. 

  1168.     or DNS name (string)</LI>

    1169. 

  1169.     <LI> <B>port</B>: peer's port number (integer)</LI></UL></LI>

    1170. 

  1170.   <LI> <B>peers</B>: (binary model) Instead of using the dictionary =

    1171. 

  1171. model=20

    1172. 

  1172.   described above, the <B>peers</B> value may be a string consisting of=20

    1173. 

  1173.   multiples of 6 bytes. First 4 bytes are the IP address and last 2 =

    1174. 

  1174. bytes are=20

    1175. 

  1175.   the port number. All in network (big endian) notation.</LI></UL>

    1176. 

  1176. <P>As mentioned above, the list of peers is length 50 by default.  If =

    1177. 

  1177. there are=20

    1178. 

  1178. fewer peers in the torrent, then the list will be smaller.  Otherwise, =

    1179. 

  1179. the=20

    1180. 

  1180. tracker randomly selects peers to include in the response.  <I>The =

    1181. 

  1181. tracker may=20

    1182. 

  1182. choose to implement a more intelligent mechanism for peer selection when =

    1183. 

  1183. 

    1184. 

  1184. responding to a request.  For instance, reporting seeds to other seeders =

    1185. 

  1185. could=20

    1186. 

  1186. be avoided.</I></P>

    1187. 

  1187. <P>Clients may send a request to the tracker more often than the =

    1188. 

  1188. specified=20

    1189. 

  1189. interval, if an event occurs (i.e. stopped or completed) or if the =

    1190. 

  1190. client needs=20

    1191. 

  1191. to learn about more peers.  However, it is considered bad practice to =

    1192. 

  1192. "hammer"=20

    1193. 

  1193. on a tracker to get multiple peers.  If a client wants a large peer list =

    1194. 

  1194. in the=20

    1195. 

  1195. response, then it should specify the <B>numwant</B> parameter.</P>

    1196. 

  1196. <P><I><B>Implementer's Note</B>: Even 30 peers is <B>plenty</B>, the =

    1197. 

  1197. official=20

    1198. 

  1198. client version 3 in fact only actively forms new connections if it has =

    1199. 

  1199. less than=20

    1200. 

  1200. 30 peers and will refuse connections if it has 55. <B>This value is =

    1201. 

  1201. important to=20

    1202. 

  1202. performance</B>. When a new piece has completed download, HAVE messages =

    1203. 

  1203. (see=20

    1204. 

  1204. below) will need to be sent to most active peers. As a result the cost =

    1205. 

  1205. of=20

    1206. 

  1206. broadcast traffic grows in direct proportion to the number of peers. =

    1207. 

  1207. Above 25,=20

    1208. 

  1208. new peers are highly unlikely to increase download speed. UI designers =

    1209. 

  1209. are=20

    1210. 

  1210. <B>strongly</B> advised to make this obscure and hard to change as it is =

    1211. 

  1211. very=20

    1212. 

  1212. rare to be useful to do so.</I></P>

    1213. 

  1213. <H2> <SPAN id=3D"Tracker_.27scrape.27_Convention" class=3D"mw-headline"> =

    1214. 

  1214. Tracker=20

    1215. 

  1215. 'scrape' Convention </SPAN></H2>

    1216. 

  1216. <P>By convention most trackers support another form of request, which =

    1217. 

  1217. queries=20

    1218. 

  1218. the state of a given torrent (or all torrents) that the tracker is =

    1219. 

  1219. managing. =20

    1220. 

  1220. This is referred to as the "scrape page" because it automates the =

    1221. 

  1221. otherwise=20

    1222. 

  1222. tedious process of "screen scraping" the tracker's stats page.</P>

    1223. 

  1223. <P>The scrape URL is also a HTTP GET method, similar to the one =

    1224. 

  1224. described above.=20

    1225. 

  1225.  However the base URL is different.  To derive the scrape URL use the =

    1226. 

  1226. following=20

    1227. 

  1227. steps:  Begin with the announce URL.  Find the last '/' in it.  If the =

    1228. 

  1228. text=20

    1229. 

  1229. immediately following that '/' isn't 'announce' it will be taken as a =

    1230. 

  1230. sign that=20

    1231. 

  1231. that tracker doesn't support the scrape convention. If it does, =

    1232. 

  1232. substitute=20

    1233. 

  1233. 'scrape' for 'announce' to find the scrape page.</P>

    1234. 

  1234. <P>Examples: (announce URL -&gt; scrape URL)</P><PRE>  =

    1235. 

  1235. ~http://example.com/announce          -&gt; ~http://example.com/scrape=0A=

    1236. 

  1236.   ~http://example.com/x/announce        -&gt; =

    1237. 

  1237. ~http://example.com/x/scrape=0A=

    1238. 

  1238.   ~http://example.com/announce.php      -&gt; =

    1239. 

  1239. ~http://example.com/scrape.php=0A=

    1240. 

  1240.   ~http://example.com/a                 -&gt; (scrape not supported)=0A=

    1241. 

  1241.   ~http://example.com/announce?x2%0644 -&gt; =

    1242. 

  1242. ~http://example.com/scrape?x2%0644=0A=

    1243. 

  1243.   ~http://example.com/announce?x=3D2/4    -&gt; (scrape not supported)=0A=

    1244. 

  1244.   ~http://example.com/x%064announce     -&gt; (scrape not supported)=0A=

    1245. 

  1245. </PRE>

    1246. 

  1246. <P>Note especially that entity unquoting is <I>not</I> to be done.  This =

    1247. 

  1247. 

    1248. 

  1248. standard is documented by Bram in the <A class=3D"new" =

    1249. 

  1249. title=3D"BitTorrent (page does not exist)"=20

    1250. 

  1250. href=3D"http://wiki.theory.org/index.php?title=3DBitTorrent&amp;action=3D=

    1251. 

  1251. edit&amp;redlink=3D1">BitTorrent</A>=20

    1252. 

  1252. development list archive: <A class=3D"external free" =

    1253. 

  1253. href=3D"http://groups.yahoo.com/group/BitTorrent/message/3275"=20

    1254. 

  1254. rel=3D"nofollow">http://groups.yahoo.com/group/BitTorrent/message/3275</A=

    1255. 

  1255. ></P>

    1256. 

  1256. <P>The scrape URL may be supplemented by the optional parameter=20

    1257. 

  1257. <I>info_hash</I>, a 20-byte value as described above.  This restricts =

    1258. 

  1258. the=20

    1259. 

  1259. tracker's report to that particular torrent.  Otherwise stats for all =

    1260. 

  1260. torrents=20

    1261. 

  1261. that the tracker is managing are returned.  Software authors are =

    1262. 

  1262. strongly=20

    1263. 

  1263. encouraged to use the <I>info_hash</I> parameter when at all possible, =

    1264. 

  1264. to reduce=20

    1265. 

  1265. the load and bandwidth of the tracker.</P>

    1266. 

  1266. <P>You may also specify multiple info_hash parameters to trackers that =

    1267. 

  1267. support=20

    1268. 

  1268. it. While this isn't part of the official specifications it has become =

    1269. 

  1269. somewhat=20

    1270. 

  1270. a defacto standard - for example:</P><PRE> =

    1271. 

  1271. http://example.com/scrape.php?info_hash=3Daaaaaaaaaaaaaaaaaaaa&amp;info_h=

    1272. 

  1272. ash=3Dbbbbbbbbbbbbbbbbbbbb&amp;info_hash=3Dcccccccccccccccccccc=0A=

    1273. 

  1273. </PRE>

    1274. 

  1274. <P>The response of this HTTP GET method is a "text/plain" or sometimes =

    1275. 

  1275. gzip=20

    1276. 

  1276. compressed document consisting of a bencoded dictionary, containing the=20

    1277. 

  1277. following keys:</P>

    1278. 

  1278. <UL>

    1279. 

  1279.   <LI> <B>files</B>: a dictionary containing one key/value pair for each =

    1280. 

  1280. torrent=20

    1281. 

  1281.   for which there are stats.  If <I>info_hash</I> was supplied and was =

    1282. 

  1282. valid,=20

    1283. 

  1283.   this dictionary will contain a single key/value.  Each key consists of =

    1284. 

  1284. a=20

    1285. 

  1285.   20-byte binary <I>info_hash</I>.  The value of each entry is another=20

    1286. 

  1286.   dictionary containing the following:

    1287. 

  1287.   <UL>

    1288. 

  1288.     <LI> <B>complete</B>: number of peers with the entire file, i.e. =

    1289. 

  1289. seeders=20

    1290. 

  1290.     (integer)</LI>

    1291. 

  1291.     <LI> <B>downloaded</B>: total number of times the tracker has =

    1292. 

  1292. registered a=20

    1293. 

  1293.     completion ("event=3Dcomplete", i.e. a client finished downloading =

    1294. 

  1294. the=20

    1295. 

  1295.     torrent)</LI>

    1296. 

  1296.     <LI> <B>incomplete</B>: number of non-seeder peers, aka "leechers" =

    1297. 

  1297. (integer)

    1298. 

  1298.     </LI>

    1299. 

  1299.     <LI> <B>name</B>: (optional) the torrent's internal name, as =

    1300. 

  1300. specified by=20

    1301. 

  1301.     the "name" file in the info section of the .torrent =

    1302. 

  1302. file</LI></UL></LI></UL>

    1303. 

  1303. <P>Note that this response has three levels of dictionary nesting.  =

    1304. 

  1304. Here's an=20

    1305. 

  1305. example:</P>

    1306. 

  1306. <P><TT>d5:<I>files</I>d20:....................d8:<I>complete</I>i<B>5</B>=

    1307. 

  1307. e10:<I>downloaded</I>i<B>50</B>e10:<I>incomplete</I>i<B>10</B>eeee</TT>

    1308. 

  1308. </P>

    1309. 

  1309. <P>Where <TT>....................</TT> is the 20 byte info_hash and =

    1310. 

  1310. there are 5=20

    1311. 

  1311. seeders, 10 leechers, and 50 complete downloads.</P>

    1312. 

  1312. <H3> <SPAN id=3D"Unofficial_extensions_to_scrape" class=3D"mw-headline"> =

    1313. 

  1313. Unofficial=20

    1314. 

  1314. extensions to scrape </SPAN></H3>

    1315. 

  1315. <P>Below are the response keys are being unofficially used.  Since they =

    1316. 

  1316. are=20

    1317. 

  1317. unofficial, they are all optional.</P>

    1318. 

  1318. <UL>

    1319. 

  1319.   <LI> <B>failure reason</B>: Human-readable error message as to why the =

    1320. 

  1320. request=20

    1321. 

  1321.   failed (string).  Clients known to handle this key: Azureus.</LI>

    1322. 

  1322.   <LI> <B>flags</B>: a dictionary containing miscellaneous flags.  The =

    1323. 

  1323. value of=20

    1324. 

  1324.   the flags key is another nested dictionary, possibly containing the =

    1325. 

  1325. following:

    1326. 

  1326.   <UL>

    1327. 

  1327.     <LI> <B>min_request_interval</B>: The value for this key is an =

    1328. 

  1328. integer=20

    1329. 

  1329.     specifying how the minimum number of seconds for the client to wait =

    1330. 

  1330. before=20

    1331. 

  1331.     scraping the tracker again. Trackers known to send this key: BNBT. =

    1332. 

  1332. Clients=20

    1333. 

  1333.     known to handle this key: Azureus.</LI></UL></LI></UL>

    1334. 

  1334. <H2> <SPAN id=3D"Peer_wire_protocol_.28TCP.29" class=3D"mw-headline"> =

    1335. 

  1335. Peer wire=20

    1336. 

  1336. protocol (TCP) </SPAN></H2>

    1337. 

  1337. <H3> <SPAN id=3D"Overview" class=3D"mw-headline"> Overview </SPAN></H3>

    1338. 

  1338. <P>The peer protocol facilitates the exchange of pieces as described in =

    1339. 

  1339. the=20

    1340. 

  1340. '<I>metainfo</I> file.</P>

    1341. 

  1341. <P><I>Note here that the original specification also used the term =

    1342. 

  1342. "piece" when=20

    1343. 

  1343. describing the peer protocol, but as a different term than "piece" in =

    1344. 

  1344. the=20

    1345. 

  1345. metainfo file.  For that reason, the term "block" will be used in this=20

    1346. 

  1346. specification to describe the data that is exchanged between peers over =

    1347. 

  1347. the=20

    1348. 

  1348. wire.</I></P>

    1349. 

  1349. <P>A client must maintain state information for each connection that it =

    1350. 

  1350. has with=20

    1351. 

  1351. a remote peer:</P>

    1352. 

  1352. <UL>

    1353. 

  1353.   <LI> <B>choked</B>:  Whether or not the remote peer has choked this =

    1354. 

  1354. client. =20

    1355. 

  1355.   When a peer chokes the client, it is a notification that no requests =

    1356. 

  1356. will be=20

    1357. 

  1357.   answered until the client is unchoked.  The client should not attempt =

    1358. 

  1358. to send=20

    1359. 

  1359.   requests for blocks, and it should consider all pending (unanswered) =

    1360. 

  1360. requests=20

    1361. 

  1361.   to be discarded by the remote peer.</LI>

    1362. 

  1362.   <LI> <B>interested</B>: Whether or not the remote peer is interested =

    1363. 

  1363. in=20

    1364. 

  1364.   something this client has to offer.  This is a notification that the =

    1365. 

  1365. remote=20

    1366. 

  1366.   peer will begin requesting blocks when the client unchokes =

    1367. 

  1367. them.</LI></UL>

    1368. 

  1368. <P><I>Note that this also implies that the client will also need to keep =

    1369. 

  1369. track=20

    1370. 

  1370. of whether or not it is interested in the remote peer, and if it has the =

    1371. 

  1371. remote=20

    1372. 

  1372. peer choked or unchoked.  So, the real list looks something like =

    1373. 

  1373. this:</I></P>

    1374. 

  1374. <UL>

    1375. 

  1375.   <LI> <B>am_choking</B>: this client is choking the peer</LI>

    1376. 

  1376.   <LI> <B>am_interested</B>: this client is interested in the peer</LI>

    1377. 

  1377.   <LI> <B>peer_choking</B>: peer is choking this client</LI>

    1378. 

  1378.   <LI> <B>peer_interested</B>: peer is interested in this =

    1379. 

  1379. client</LI></UL>

    1380. 

  1380. <P>Client connections start out as "choked" and "not interested".  In =

    1381. 

  1381. other=20

    1382. 

  1382. words:</P>

    1383. 

  1383. <UL>

    1384. 

  1384.   <LI> <B>am_choking</B> =3D 1</LI>

    1385. 

  1385.   <LI> <B>am_interested</B> =3D 0</LI>

    1386. 

  1386.   <LI> <B>peer_choking</B> =3D 1</LI>

    1387. 

  1387.   <LI> <B>peer_interested</B> =3D 0</LI></UL>

    1388. 

  1388. <P>A block is downloaded by the client when the client is interested in =

    1389. 

  1389. a peer,=20

    1390. 

  1390. and that peer is not choking the client.  A block is uploaded by a =

    1391. 

  1391. client when=20

    1392. 

  1392. the client is not choking a peer, and that peer is interested in the =

    1393. 

  1393. client.</P>

    1394. 

  1394. <P>It is important for the client to keep its peers informed as to =

    1395. 

  1395. whether or=20

    1396. 

  1396. not it is interested in them.  This state information should be kept =

    1397. 

  1397. up-to-date=20

    1398. 

  1398. with each peer even when the client is choked.  This will allow peers to =

    1399. 

  1399. know if=20

    1400. 

  1400. the client will begin downloading when it is unchoked (and =

    1401. 

  1401. vice-versa).</P>

    1402. 

  1402. <H3> <SPAN id=3D"Data_Types" class=3D"mw-headline"> Data Types =

    1403. 

  1403. </SPAN></H3>

    1404. 

  1404. <P>Unless specified otherwise, all integers in the peer wire protocol =

    1405. 

  1405. are=20

    1406. 

  1406. encoded as four byte big-endian values.  This includes the length prefix =

    1407. 

  1407. on all=20

    1408. 

  1408. messages that come after the handshake.</P>

    1409. 

  1409. <H3> <SPAN id=3D"Message_flow" class=3D"mw-headline"> Message flow =

    1410. 

  1410. </SPAN></H3>

    1411. 

  1411. <P>The peer wire protocol consists of an initial handshake.  After that, =

    1412. 

  1412. peers=20

    1413. 

  1413. communicate via an exchange of length-prefixed messages.  The =

    1414. 

  1414. length-prefix is=20

    1415. 

  1415. an integer as described above.</P>

    1416. 

  1416. <H3> <SPAN id=3D"Handshake" class=3D"mw-headline"> Handshake =

    1417. 

  1417. </SPAN></H3>

    1418. 

  1418. <P>The handshake is a required message and must be the first message =

    1419. 

  1419. transmitted=20

    1420. 

  1420. by the client. It is (49+len(pstr)) bytes long.</P>

    1421. 

  1421. <P><I>handshake:=20

    1422. 

  1422. &lt;pstrlen&gt;&lt;pstr&gt;&lt;reserved&gt;&lt;info_hash&gt;&lt;peer_id&g=

    1423. 

  1423. t;</I>

    1424. 

  1424. </P>

    1425. 

  1425. <UL>

    1426. 

  1426.   <LI> <B>pstrlen</B>: string length of &lt;pstr&gt;, as a single raw =

    1427. 

  1427. byte</LI>

    1428. 

  1428.   <LI> <B>pstr</B>: string identifier of the protocol</LI>

    1429. 

  1429.   <LI> <B>reserved</B>: eight (8) reserved bytes.  All current =

    1430. 

  1430. implementations=20

    1431. 

  1431.   use all zeroes.  Each bit in these bytes can be used to change the =

    1432. 

  1432. behavior of=20

    1433. 

  1433.   the protocol.  <I>An email from Bram suggests that trailing bits =

    1434. 

  1434. should be=20

    1435. 

  1435.   used first, so that leading bits may be used to change the meaning of =

    1436. 

  1436. trailing=20

    1437. 

  1437.   bits.</I></LI>

    1438. 

  1438.   <LI> <B>info_hash</B>: 20-byte SHA1 hash of the info key in the =

    1439. 

  1439. metainfo file.=20

    1440. 

  1440.    This is the same info_hash that is transmitted in tracker =

    1441. 

  1441. requests.</LI>

    1442. 

  1442.   <LI> <B>peer_id</B>: 20-byte string used as a unique ID for the =

    1443. 

  1443. client.  This=20

    1444. 

  1444.   is usually the same peer_id that is transmitted in tracker requests =

    1445. 

  1445. (but not=20

    1446. 

  1446.   always e.g. an anonymity option in Azureus).</LI></UL>

    1447. 

  1447. <P>In version 1.0 of the BitTorrent protocol, pstrlen =3D 19, and pstr =

    1448. 

  1448. =3D=20

    1449. 

  1449. "BitTorrent protocol".</P>

    1450. 

  1450. <P>The initiator of a connection is expected to transmit their handshake =

    1451. 

  1451. 

    1452. 

  1452. immediately.  The recipient may wait for the initiator's handshake, if =

    1453. 

  1453. it is=20

    1454. 

  1454. capable of serving multiple torrents simultaneously (torrents are =

    1455. 

  1455. uniquely=20

    1456. 

  1456. identified by their info<I>hash).  However, the recipient must respond =

    1457. 

  1457. as soon=20

    1458. 

  1458. as it sees the info_hash part of the handshake (the peer id will =

    1459. 

  1459. presumably be=20

    1460. 

  1460. sent after the recipient sends its own handshake).  The tracker's =

    1461. 

  1461. NAT-checking=20

    1462. 

  1462. feature does not send the peer_id field of the handshake.</I></P>

    1463. 

  1463. <P>If a client receives a handshake with an info_hash that it is not =

    1464. 

  1464. currently=20

    1465. 

  1465. serving, then the client must drop the connection.</P>

    1466. 

  1466. <P>If the initiator of the connection receives a handshake in which the =

    1467. 

  1467. peer_id=20

    1468. 

  1468. does not match the expected peer<I>id, then the initiator is expected to =

    1469. 

  1469. drop=20

    1470. 

  1470. the connection.  </I>Note that the initiator presumably received the =

    1471. 

  1471. peer=20

    1472. 

  1472. information from the tracker, which includes the peer_id that was =

    1473. 

  1473. registered by=20

    1474. 

  1474. the peer.  The peer_id from the tracker and in the handshake are =

    1475. 

  1475. expected to=20

    1476. 

  1476. match.</P>

    1477. 

  1477. <H4> <SPAN id=3D"peer_id" class=3D"mw-headline"> peer_id </SPAN></H4>

    1478. 

  1478. <P>The peer_id is exactly 20 bytes (characters) long.</P>

    1479. 

  1479. <P>There are mainly two conventions how to encode client and client =

    1480. 

  1480. version=20

    1481. 

  1481. information into the peer_id, Azureus-style and Shadow's-style.</P>

    1482. 

  1482. <P>Azureus-style uses the following encoding: '-', two characters for =

    1483. 

  1483. client id,=20

    1484. 

  1484. four ascii digits for version number, '-', followed by random =

    1485. 

  1485. numbers.</P>

    1486. 

  1486. <P>For example: '-AZ2060-'...</P>

    1487. 

  1487. <P>known clients that uses this encoding style are:</P>

    1488. 

  1488. <UL>

    1489. 

  1489.   <LI> 'AG' - <A class=3D"external text" =

    1490. 

  1490. href=3D"http://aresgalaxy.sourceforge.net/"=20

    1491. 

  1491.   rel=3D"nofollow">Ares</A></LI>

    1492. 

  1492.   <LI> 'A~' - <A class=3D"external text" =

    1493. 

  1493. href=3D"http://aresgalaxy.sourceforge.net/"=20

    1494. 

  1494.   rel=3D"nofollow">Ares</A></LI>

    1495. 

  1495.   <LI> 'AR' - <A class=3D"external text" =

    1496. 

  1496. href=3D"http://dev.int64.org/arctic.html"=20

    1497. 

  1497.   rel=3D"nofollow">Arctic</A></LI>

    1498. 

  1498.   <LI> 'AT' - <A class=3D"external text" =

    1499. 

  1499. href=3D"http://www.cyberartemis.com/" rel=3D"nofollow">Artemis</A>

    1500. 

  1500.   </LI>

    1501. 

  1501.   <LI> 'AX' - <A class=3D"external text" =

    1502. 

  1502. href=3D"http://www.analogx.com/contents/download/network/bitpump.htm"=20

    1503. 

  1503.   rel=3D"nofollow">BitPump</A></LI>

    1504. 

  1504.   <LI> 'AZ' - <A class=3D"external text" href=3D"http://azureus.sf.net/" =

    1505. 

  1505. rel=3D"nofollow">Azureus</A>

    1506. 

  1506.   </LI>

    1507. 

  1507.   <LI> 'BB' - <A class=3D"external text" =

    1508. 

  1508. href=3D"http://www.btvampire.com/" rel=3D"nofollow">BitBuddy</A>

    1509. 

  1509.   </LI>

    1510. 

  1510.   <LI> 'BC' - <A class=3D"external text" =

    1511. 

  1511. href=3D"http://www.bitcomet.com/" rel=3D"nofollow">BitComet</A>

    1512. 

  1512.   </LI>

    1513. 

  1513.   <LI> 'BF' - <A class=3D"external text" =

    1514. 

  1514. href=3D"http://bitflu.workaround.ch/" rel=3D"nofollow">Bitflu</A>

    1515. 

  1515.   </LI>

    1516. 

  1516.   <LI> 'BG' - <A class=3D"external text" href=3D"http://btg.berlios.de/" =

    1517. 

  1517. rel=3D"nofollow">BTG=20

    1518. 

  1518.   (uses Rasterbar libtorrent)</A></LI>

    1519. 

  1519.   <LI> 'BL' - <A class=3D"external text" =

    1520. 

  1520. href=3D"http://www.bitblinder.com/" rel=3D"nofollow">BitBlinder</A>

    1521. 

  1521.   </LI>

    1522. 

  1522.   <LI> 'BP' - <A class=3D"external text" =

    1523. 

  1523. href=3D"http://www.intelpeers.com/" rel=3D"nofollow">BitTorrent=20

    1524. 

  1524.   Pro (Azureus + spyware)</A></LI>

    1525. 

  1525.   <LI> 'BR' - <A class=3D"external text" =

    1526. 

  1526. href=3D"http://www.bitrocket.org/" rel=3D"nofollow">BitRocket</A>

    1527. 

  1527.   </LI>

    1528. 

  1528.   <LI> 'BS' - <A class=3D"external text" =

    1529. 

  1529. href=3D"http://btslave.sourceforge.net/"=20

    1530. 

  1530.   rel=3D"nofollow">BTSlave</A></LI>

    1531. 

  1531.   <LI> 'BW' - <A class=3D"external text" href=3D"http://bitwombat.com/" =

    1532. 

  1532. rel=3D"nofollow">BitWombat</A>

    1533. 

  1533.   </LI>

    1534. 

  1534.   <LI> 'BX' - ~Bittorrent X</LI>

    1535. 

  1535.   <LI> 'CD' - <A class=3D"external text" =

    1536. 

  1536. href=3D"http://www.rahul.net/dholmes/ctorrent/"=20

    1537. 

  1537.   rel=3D"nofollow">Enhanced CTorrent</A></LI>

    1538. 

  1538.   <LI> 'CT' - <A class=3D"external text" =

    1539. 

  1539. href=3D"http://ctorrent.sourceforge.net/"=20

    1540. 

  1540.   rel=3D"nofollow">CTorrent</A></LI>

    1541. 

  1541.   <LI> 'DE' - <A class=3D"external text" =

    1542. 

  1542. href=3D"http://www.deluge-torrent.org/"=20

    1543. 

  1543.   rel=3D"nofollow">DelugeTorrent</A></LI>

    1544. 

  1544.   <LI> 'DP' - <A class=3D"external text" =

    1545. 

  1545. href=3D"http://www.propagatedata.com/" rel=3D"nofollow">Propagate=20

    1546. 

  1546.   Data Client</A></LI>

    1547. 

  1547.   <LI> 'EB' - <A class=3D"external text" href=3D"http://dywt.com.cn/"=20

    1548. 

  1548.   rel=3D"nofollow">EBit</A></LI>

    1549. 

  1549.   <LI> 'ES' - <A class=3D"external text" =

    1550. 

  1550. href=3D"http://electricsheep.org/" rel=3D"nofollow">electric=20

    1551. 

  1551.   sheep</A></LI>

    1552. 

  1552.   <LI> 'FC' - <A class=3D"external text" =

    1553. 

  1553. href=3D"http://www.filecroc.com/" rel=3D"nofollow">FileCroc</A>

    1554. 

  1554.   </LI>

    1555. 

  1555.   <LI> 'FT' - <A class=3D"external text" =

    1556. 

  1556. href=3D"http://www.foxtorrent.com/" rel=3D"nofollow">FoxTorrent</A>

    1557. 

  1557.   </LI>

    1558. 

  1558.   <LI> 'GS' - <A class=3D"external text" =

    1559. 

  1559. href=3D"http://sourceforge.net/projects/gstorrent"=20

    1560. 

  1560.   rel=3D"nofollow">GSTorrent</A></LI>

    1561. 

  1561.   <LI> 'HK' - <A class=3D"external text" =

    1562. 

  1562. href=3D"http://www.pps.jussieu.fr/~jch/software/hekate/"=20

    1563. 

  1563.   rel=3D"nofollow">Hekate</A></LI>

    1564. 

  1564.   <LI> 'HL' - <A class=3D"external text" =

    1565. 

  1565. href=3D"http://www.binarynotions.com/halite.php"=20

    1566. 

  1566.   rel=3D"nofollow">Halite</A></LI>

    1567. 

  1567.   <LI> 'HN' - <A class=3D"external text" href=3D"http://hydranode.com/" =

    1568. 

  1568. rel=3D"nofollow">Hydranode</A>

    1569. 

  1569.   </LI>

    1570. 

  1570.   <LI> 'KG' - <A class=3D"external text" =

    1571. 

  1571. href=3D"http://kget.sourceforge.net/" rel=3D"nofollow">KGet</A>

    1572. 

  1572.   </LI>

    1573. 

  1573.   <LI> 'KT' - <A class=3D"external text" href=3D"http://ktorrent.org/" =

    1574. 

  1574. rel=3D"nofollow">KTorrent</A>

    1575. 

  1575.   </LI>

    1576. 

  1576.   <LI> 'LC' - <A class=3D"external text" href=3D"http://leechcraft.org/" =

    1577. 

  1577. rel=3D"nofollow">LeechCraft</A>

    1578. 

  1578.   </LI>

    1579. 

  1579.   <LI> 'LH' - <A class=3D"external text" =

    1580. 

  1580. href=3D"http://code.google.com/p/lh-abc"=20

    1581. 

  1581.   rel=3D"nofollow">LH-ABC</A></LI>

    1582. 

  1582.   <LI> 'LP' - <A class=3D"external text" href=3D"http://www.lphant.com/" =

    1583. 

  1583. rel=3D"nofollow">Lphant</A>

    1584. 

  1584.   </LI>

    1585. 

  1585.   <LI> 'LT' - <A class=3D"external text" =

    1586. 

  1586. href=3D"http://libtorrent.sf.net/" rel=3D"nofollow">libtorrent</A>

    1587. 

  1587.   </LI>

    1588. 

  1588.   <LI> 'lt' - <A class=3D"external text" =

    1589. 

  1589. href=3D"http://libtorrent.rakshasa.no/"=20

    1590. 

  1590.   rel=3D"nofollow">libTorrent</A></LI>

    1591. 

  1591.   <LI> 'LW' - <A class=3D"external text" =

    1592. 

  1592. href=3D"http://www.limewire.org/" rel=3D"nofollow">LimeWire</A>

    1593. 

  1593.   </LI>

    1594. 

  1594.   <LI> 'MK' - <A class=3D"external text" =

    1595. 

  1595. href=3D"http://www.themeerkat.net/" rel=3D"nofollow">Meerkat</A>

    1596. 

  1596.   </LI>

    1597. 

  1597.   <LI> 'MO' - <A class=3D"external text" =

    1598. 

  1598. href=3D"http://monotorrent.blogspot.com/"=20

    1599. 

  1599.   rel=3D"nofollow">MonoTorrent</A></LI>

    1600. 

  1600.   <LI> 'MP' - <A class=3D"external text" =

    1601. 

  1601. href=3D"http://www.moopolice.de/" rel=3D"nofollow">MooPolice</A>

    1602. 

  1602.   </LI>

    1603. 

  1603.   <LI> 'MR' - <A class=3D"external text" =

    1604. 

  1604. href=3D"http://www.getmiro.com/" rel=3D"nofollow">Miro</A>

    1605. 

  1605.   </LI>

    1606. 

  1606.   <LI> 'MT' - <A class=3D"external text" =

    1607. 

  1607. href=3D"http://www.moonlighttorrent.com/"=20

    1608. 

  1608.   rel=3D"nofollow">MoonlightTorrent</A></LI>

    1609. 

  1609.   <LI> 'NX' - <A class=3D"external text" =

    1610. 

  1610. href=3D"http://www.xi-soft.com/" rel=3D"nofollow">Net=20

    1611. 

  1611.   Transport</A></LI>

    1612. 

  1612.   <LI> 'OS' - <A class=3D"external text" =

    1613. 

  1613. href=3D"http://oneswarm.cs.washington.edu/"=20

    1614. 

  1614.   rel=3D"nofollow">OneSwarm</A></LI>

    1615. 

  1615.   <LI> 'OT' - <A class=3D"external text" =

    1616. 

  1616. href=3D"http://www.omegatorrent.com/" rel=3D"nofollow">OmegaTorrent</A>

    1617. 

  1617.   </LI>

    1618. 

  1618.   <LI> 'PD' - <A class=3D"external text" href=3D"http://www.pando.com/" =

    1619. 

  1619. rel=3D"nofollow">Pando</A>

    1620. 

  1620.   </LI>

    1621. 

  1621.   <LI> 'PT' - <A class=3D"external text" =

    1622. 

  1622. href=3D"http://php-tracker.org/" rel=3D"nofollow">PHPTracker</A>

    1623. 

  1623.   </LI>

    1624. 

  1624.   <LI> 'qB' - <A class=3D"external text" =

    1625. 

  1625. href=3D"http://www.qbittorrent.org/" rel=3D"nofollow">qBittorrent</A>

    1626. 

  1626.   </LI>

    1627. 

  1627.   <LI> 'QD' - <A class=3D"external text" =

    1628. 

  1628. href=3D"http://im.qq.com/cyclone/" rel=3D"nofollow">QQDownload</A>

    1629. 

  1629.   </LI>

    1630. 

  1630.   <LI> 'QT' - Qt 4 Torrent example</LI>

    1631. 

  1631.   <LI> 'RT' - <A class=3D"external text" =

    1632. 

  1632. href=3D"http://www.halogenware.com/software/retriever.html"=20

    1633. 

  1633.   rel=3D"nofollow">Retriever</A></LI>

    1634. 

  1634.   <LI> 'RZ' - <A class=3D"external text" =

    1635. 

  1635. href=3D"https://launchpad.net/reztorrent"=20

    1636. 

  1636.   rel=3D"nofollow">RezTorrent</A></LI>

    1637. 

  1637.   <LI> 'S~' - <A class=3D"external text" =

    1638. 

  1638. href=3D"http://shareaza.sourceforge.net/"=20

    1639. 

  1639.   rel=3D"nofollow">Shareaza alpha/beta</A></LI>

    1640. 

  1640.   <LI> 'SB' - ~Swiftbit</LI>

    1641. 

  1641.   <LI> 'SD' - <A class=3D"external text" href=3D"http://www.xunlei.com/" =

    1642. 

  1642. rel=3D"nofollow">Thunder=20

    1643. 

  1643.   (aka X=C3=B9nL=C3=A9i)</A></LI>

    1644. 

  1644.   <LI> 'SM' - <A class=3D"external text" href=3D"http://www.somud.com/" =

    1645. 

  1645. rel=3D"nofollow">SoMud</A>

    1646. 

  1646.   </LI>

    1647. 

  1647.   <LI> 'SS' - SwarmScope</LI>

    1648. 

  1648.   <LI> 'ST' - <A class=3D"external text" =

    1649. 

  1649. href=3D"http://symtorrent.aut.bme.hu/" rel=3D"nofollow">SymTorrent</A>

    1650. 

  1650.   </LI>

    1651. 

  1651.   <LI> 'st' - <A class=3D"external text" =

    1652. 

  1652. href=3D"http://sharktorrent.com/" rel=3D"nofollow">sharktorrent</A>

    1653. 

  1653.   </LI>

    1654. 

  1654.   <LI> 'SZ' - <A class=3D"external text" =

    1655. 

  1655. href=3D"http://shareaza.sourceforge.net/"=20

    1656. 

  1656.   rel=3D"nofollow">Shareaza</A></LI>

    1657. 

  1657.   <LI> 'TN' - TorrentDotNET</LI>

    1658. 

  1658.   <LI> 'TR' - <A class=3D"external text" =

    1659. 

  1659. href=3D"http://www.transmissionbt.com/"=20

    1660. 

  1660.   rel=3D"nofollow">Transmission</A></LI>

    1661. 

  1661.   <LI> 'TS' - <A class=3D"external text" =

    1662. 

  1662. href=3D"http://www.torrentstorm.com/" rel=3D"nofollow">Torrentstorm</A>

    1663. 

  1663.   </LI>

    1664. 

  1664.   <LI> 'TT' - <A class=3D"external text" href=3D"http://www.tuotu.com/" =

    1665. 

  1665. rel=3D"nofollow">TuoTu</A>

    1666. 

  1666.   </LI>

    1667. 

  1667.   <LI> 'UL' - uLeecher!</LI>

    1668. 

  1668.   <LI> 'UM' - <A class=3D"external text" =

    1669. 

  1669. href=3D"http://mac.utorrent.com/" rel=3D"nofollow">=C2=B5Torrent=20

    1670. 

  1670.   for Mac</A></LI>

    1671. 

  1671.   <LI> 'UT' - <A class=3D"external text" =

    1672. 

  1672. href=3D"http://www.utorrent.com/" rel=3D"nofollow">=C2=B5Torrent</A>

    1673. 

  1673.   </LI>

    1674. 

  1674.   <LI> 'VG' - <A class=3D"external text" href=3D"http://www.vagaa.com/" =

    1675. 

  1675. rel=3D"nofollow">Vagaa</A>

    1676. 

  1676.   </LI>

    1677. 

  1677.   <LI> 'WT' - <A class=3D"external text" href=3D"http://www.bitlet.org/" =

    1678. 

  1678. rel=3D"nofollow">BitLet</A>

    1679. 

  1679.   </LI>

    1680. 

  1680.   <LI> 'WY' - <A class=3D"external text" =

    1681. 

  1681. href=3D"http://www.wyzo.com/firetorrent/"=20

    1682. 

  1682.   rel=3D"nofollow">FireTorrent</A></LI>

    1683. 

  1683.   <LI> 'XL' - <A class=3D"external text" href=3D"http://www.xunlei.com/" =

    1684. 

  1684. rel=3D"nofollow">Xunlei</A>

    1685. 

  1685.   </LI>

    1686. 

  1686.   <LI> 'XS' - XSwifter</LI>

    1687. 

  1687.   <LI> 'XT' - <A class=3D"external text" =

    1688. 

  1688. href=3D"http://www.xantorrent.pwp.blueyonder.co.uk/xantorrent.zip"=20

    1689. 

  1689.   rel=3D"nofollow">XanTorrent</A></LI>

    1690. 

  1690.   <LI> 'XX' - <A class=3D"external text" =

    1691. 

  1691. href=3D"http://www.xtorrent.com/" rel=3D"nofollow">Xtorrent</A>

    1692. 

  1692.   </LI>

    1693. 

  1693.   <LI> 'ZT' - <A class=3D"external text" =

    1694. 

  1694. href=3D"http://www.ziptorrent.com/" rel=3D"nofollow">ZipTorrent</A>

    1695. 

  1695.   </LI></UL>

    1696. 

  1696. <P>Clients which have been seen in the wild and need to be =

    1697. 

  1697. identified:</P>

    1698. 

  1698. <UL>

    1699. 

  1699.   <LI> 'BD' (example: -BD0300-)</LI>

    1700. 

  1700.   <LI> 'NP' (example: -NP0201-)</LI>

    1701. 

  1701.   <LI> 'wF' (example: -wF2200-)</LI>

    1702. 

  1702.   <LI> 'hk' (example: -hk0010-) Chinese IP address, unrequestedly sends =

    1703. 

  1703. info=20

    1704. 

  1704.   dict in message 0xA, reconnects immediately after being disconnected, =

    1705. 

  1705. reserved=20

    1706. 

  1706.   bytes =3D 01,01,01,01,00,00,02,01</LI></UL>

    1707. 

  1707. <P>Shadow's style uses the following encoding: one ascii alphanumeric =

    1708. 

  1708. for client=20

    1709. 

  1709. identification, up to five characters for version number (padded with =

    1710. 

  1710. '-' if=20

    1711. 

  1711. less than five), followed by three characters (commonly '---', but not =

    1712. 

  1712. always=20

    1713. 

  1713. the case), followed by random characters. Each character in the version =

    1714. 

  1714. string=20

    1715. 

  1715. represents a number from 0 to 63. '0'=3D0, ..., '9'=3D9, 'A'=3D10, ..., =

    1716. 

  1716. 'Z'=3D35,=20

    1717. 

  1717. 'a'=3D36, ..., 'z'=3D61, '.'=3D62, '-'=3D63.</P>

    1718. 

  1718. <P>A full explanation by Shad0w about the encoding style (including =

    1719. 

  1719. information=20

    1720. 

  1720. about existing conventions on how the three characters after the version =

    1721. 

  1721. string=20

    1722. 

  1722. are used) can be found <A class=3D"external text" =

    1723. 

  1723. href=3D"http://forums.degreez.net/viewtopic.php?t=3D7070"=20

    1724. 

  1724. rel=3D"nofollow">here</A>.</P>

    1725. 

  1725. <P>For example: 'S58B-----'... for Shadow's 5.8.11</P>

    1726. 

  1726. <P>known clients that uses this encoding style are:</P>

    1727. 

  1727. <UL>

    1728. 

  1728.   <LI> 'A' - <A class=3D"external text" =

    1729. 

  1729. href=3D"http://pingpong-abc.sourceforge.net/"=20

    1730. 

  1730.   rel=3D"nofollow">ABC</A></LI>

    1731. 

  1731.   <LI> 'O' - <A class=3D"external text" =

    1732. 

  1732. href=3D"http://osprey.ibiblio.org/" rel=3D"nofollow">Osprey=20

    1733. 

  1733.   Permaseed</A></LI>

    1734. 

  1734.   <LI> 'Q' - <A class=3D"external text" =

    1735. 

  1735. href=3D"http://btqueue.sourceforge.net/"=20

    1736. 

  1736.   rel=3D"nofollow">BTQueue</A></LI>

    1737. 

  1737.   <LI> 'R' - <A class=3D"external text" href=3D"http://www.tribler.org/" =

    1738. 

  1738. rel=3D"nofollow">Tribler</A>

    1739. 

  1739.   </LI>

    1740. 

  1740.   <LI> 'S' - <A class=3D"external text" href=3D"http://bt.degreez.net/" =

    1741. 

  1741. rel=3D"nofollow">Shadow's=20

    1742. 

  1742.   client</A></LI>

    1743. 

  1743.   <LI> 'T' - <A class=3D"external text" href=3D"http://bittornado.com/" =

    1744. 

  1744. rel=3D"nofollow">BitTornado</A>

    1745. 

  1745.   </LI>

    1746. 

  1746.   <LI> 'U' - <A class=3D"external text" =

    1747. 

  1747. href=3D"http://aaron2003.myftp.org/upnpclient.html"=20

    1748. 

  1748.   rel=3D"nofollow">UPnP NAT Bit Torrent</A></LI></UL>

    1749. 

  1749. <P>Bram's client now uses this style... 'M3-4-2--' or 'M4-20-8-'.</P>

    1750. 

  1750. <P><A class=3D"external text" href=3D"http://www.bitcomet.com/"=20

    1751. 

  1751. rel=3D"nofollow">BitComet</A> does something different still. Its =

    1752. 

  1752. peer_id consists=20

    1753. 

  1753. of four ASCII characters 'exbc', followed by two bytes x and y, followed =

    1754. 

  1754. by=20

    1755. 

  1755. random characters. The version number is x in decimal before the decimal =

    1756. 

  1756. point=20

    1757. 

  1757. and y as two decimal digits after the decimal point. <A =

    1758. 

  1758. class=3D"external text"=20

    1759. 

  1759. href=3D"http://www.bitlord.com/" rel=3D"nofollow">BitLord</A> uses the =

    1760. 

  1760. same scheme,=20

    1761. 

  1761. but adds 'LORD' after the version bytes. An <A class=3D"external text" =

    1762. 

  1762. href=3D"http://solidox.org/bc/"=20

    1763. 

  1763. rel=3D"nofollow">unofficial patch</A> for BitComet once replaced 'exbc' =

    1764. 

  1764. with=20

    1765. 

  1765. 'FUTB'. The encoding for BitComet Peer IDs changed to Azureus-style as =

    1766. 

  1766. of=20

    1767. 

  1767. BitComet version 0.59.</P>

    1768. 

  1768. <P><A class=3D"external text" =

    1769. 

  1769. href=3D"http://xbtt.sourceforge.net/client/" rel=3D"nofollow">XBT=20

    1770. 

  1770. Client</A> has its own style too.  Its peer_id consists of the three =

    1771. 

  1771. uppercase=20

    1772. 

  1772. characters 'XBT' followed by three ASCII digits representing the version =

    1773. 

  1773. number.=20

    1774. 

  1774.  If the client is a debug build, the seventh byte is the lowercase =

    1775. 

  1775. character=20

    1776. 

  1776. 'd', otherwise it is a '-'.  Following that is a '-' then random digits, =

    1777. 

  1777. 

    1778. 

  1778. uppercase and lowercase letters. Example: 'XBT054d-' at the beginning =

    1779. 

  1779. would=20

    1780. 

  1780. indicate a debug build of version 0.5.4.</P>

    1781. 

  1781. <P><A class=3D"external text" href=3D"http://www.opera.com/" =

    1782. 

  1782. rel=3D"nofollow">Opera 8=20

    1783. 

  1783. previews and Opera 9.x releases</A> use the following peer_id scheme: =

    1784. 

  1784. The first=20

    1785. 

  1785. two characters are 'OP' and the next four digits equal the build number. =

    1786. 

  1786. All=20

    1787. 

  1787. following characters are random lowercase hexdecimal digits.</P>

    1788. 

  1788. <P><A class=3D"external text" =

    1789. 

  1789. href=3D"http://mldonkey.sourceforge.net/Main_Page"=20

    1790. 

  1790. rel=3D"nofollow">MLdonkey</A> use the following peer_id scheme: the =

    1791. 

  1791. first=20

    1792. 

  1792. characters are '-ML' followed by a dotted version then a '-' followed by =

    1793. 

  1793. 

    1794. 

  1794. randomness. e.g. '-ML2.7.2-kgjjfkd'</P>

    1795. 

  1795. <P><A class=3D"external text" href=3D"http://www.bitsonwheels.com/"=20

    1796. 

  1796. rel=3D"nofollow">Bits on Wheels</A> uses the pattern =

    1797. 

  1797. '-BOWxxx-yyyyyyyyyyyy', where=20

    1798. 

  1798. y is random (uppercase letters) and x depends on the version. Version =

    1799. 

  1799. 1.0.6 has=20

    1800. 

  1800. xxx =3D A0C.</P>

    1801. 

  1801. <P><A class=3D"external text" href=3D"http://queenbee.se/" =

    1802. 

  1802. rel=3D"nofollow">Queen=20

    1803. 

  1803. Bee</A> uses Bram's new style: 'Q1-0-0--' or 'Q1-10-0-' followed by =

    1804. 

  1804. random=20

    1805. 

  1805. bytes.</P>

    1806. 

  1806. <P><A class=3D"external text" =

    1807. 

  1807. href=3D"http://bittyrant.cs.washington.edu/" =

    1808. 

  1808. rel=3D"nofollow">BitTyrant</A>=20

    1809. 

  1809. is an Azureus fork and simply uses 'AZ2500BT' + random bytes as peer ID =

    1810. 

  1810. in its=20

    1811. 

  1811. 1.1 version. Note the missing dashes.</P>

    1812. 

  1812. <P><A class=3D"external text" href=3D"http://www.torrentopia.org/"=20

    1813. 

  1813. rel=3D"nofollow">TorrenTopia</A> version 1.90 pretends to be or is =

    1814. 

  1814. derived from=20

    1815. 

  1815. Mainline 3.4.6. Its peer ID starts with '346------'.</P>

    1816. 

  1816. <P><A class=3D"external text" href=3D"http://www.167bt.com/intl/"=20

    1817. 

  1817. rel=3D"nofollow">BitSpirit</A> has several modes for its peer ID. In one =

    1818. 

  1818. mode it=20

    1819. 

  1819. reads the ID of its peer and reconnects using the first eight bytes as a =

    1820. 

  1820. basis=20

    1821. 

  1821. for its own ID. Its real ID appears to use '\0\3BS' (C notation) as the =

    1822. 

  1822. first=20

    1823. 

  1823. four bytes for version 3.x and '\0\2BS' for version 2.x. In all modes =

    1824. 

  1824. the ID may=20

    1825. 

  1825. end in 'UDP0'. Since BitSpirit 3.6 the peer ID uses Azureus style with=20

    1826. 

  1826. characters 'SP' but without trailing '-' (as FlashGet).</P>

    1827. 

  1827. <P><A class=3D"external text" href=3D"http://rufus.sourceforge.net/"=20

    1828. 

  1828. rel=3D"nofollow">Rufus</A> uses its version as decimal ASCII values for =

    1829. 

  1829. the first=20

    1830. 

  1830. two bytes. The third and fourth bytes are 'RS'. What then follows is the =

    1831. 

  1831. 

    1832. 

  1832. nickname of the user and some random bytes.</P>

    1833. 

  1833. <P><A class=3D"external text" href=3D"http://g3torrent.sourceforge.net/" =

    1834. 

  1834. rel=3D"nofollow">G3=20

    1835. 

  1835. Torrent</A> starts its peer ID with '-G3' and appends up to 9 characters =

    1836. 

  1836. of the=20

    1837. 

  1837. nickname of the user.</P>

    1838. 

  1838. <P><A class=3D"external text" href=3D"http://www.flashget.com/"=20

    1839. 

  1839. rel=3D"nofollow">FlashGet</A> uses Azureus style with 'FG' but without =

    1840. 

  1840. the=20

    1841. 

  1841. trailing '-'. Version 1.82.1002 still uses the version digits =

    1842. 

  1842. '0180'.</P>

    1843. 

  1843. <P><A class=3D"external text" href=3D"http://www.btnext.com/" =

    1844. 

  1844. rel=3D"nofollow">BT Next=20

    1845. 

  1845. Evolution</A> is derived from BitTornado but tries to mimic Azureus =

    1846. 

  1846. style. The=20

    1847. 

  1847. result is that its peer ID starts with '-NE', continues with a 4 digit =

    1848. 

  1848. version=20

    1849. 

  1849. number and then directly goes on with the three characters that describe =

    1850. 

  1850. the=20

    1851. 

  1851. type of client in Shad0w's peer ID style.</P>

    1852. 

  1852. <P><A class=3D"external text" href=3D"http://www.allpeers.com/"=20

    1853. 

  1853. rel=3D"nofollow">AllPeers</A> takes the sha1 hash of a user dependent =

    1854. 

  1854. string and=20

    1855. 

  1855. replaces the first few characters with "AP" + version string + "-".</P>

    1856. 

  1856. <P><A class=3D"external text" href=3D"http://www.qvod.com/" =

    1857. 

  1857. rel=3D"nofollow">Qvod</A>=20

    1858. 

  1858. starts its id with the four letters "QVOD" and continues with its build =

    1859. 

  1859. number=20

    1860. 

  1860. in four decimal digits (currently "0054"). The remaining 12 characters =

    1861. 

  1861. are=20

    1862. 

  1862. random uppercase hexdecimal digits. There appears to be a popular =

    1863. 

  1863. modified=20

    1864. 

  1864. client in China that replaces the four characters in the beginning with =

    1865. 

  1865. random=20

    1866. 

  1866. bytes.</P>

    1867. 

  1867. <P><A class=3D"external text" href=3D"http://www.spywareterminator.com/" =

    1868. 

  1868. rel=3D"nofollow">SpywareTerminator</A>=20

    1869. 

  1869. uses libtorrent to share its signature updates among users. It uses =

    1870. 

  1870. Azureus=20

    1871. 

  1871. style with 'CS' and version digits '2500'. </P>

    1872. 

  1872. <P>Many clients are using all random numbers or 12 zeroes followed by =

    1873. 

  1873. random=20

    1874. 

  1874. numbers (like older versions of <A class=3D"external text" =

    1875. 

  1875. href=3D"http://www.bittorrent.com/"=20

    1876. 

  1876. rel=3D"nofollow">Bram's client</A>).</P>

    1877. 

  1877. <H3> <SPAN id=3D"Messages" class=3D"mw-headline">Messages</SPAN></H3>

    1878. 

  1878. <P>All of the remaining messages in the protocol take the form of =

    1879. 

  1879. &lt;length=20

    1880. 

  1880. prefix&gt;&lt;message ID&gt;&lt;payload&gt;.  The length prefix is a =

    1881. 

  1881. four byte=20

    1882. 

  1882. big-endian value.  The message ID is a single decimal byte.  The payload =

    1883. 

  1883. is=20

    1884. 

  1884. message dependent.</P>

    1885. 

  1885. <H4> <SPAN id=3D"keep-alive:_.3Clen.3D0000.3E" =

    1886. 

  1886. class=3D"mw-headline">keep-alive:=20

    1887. 

  1887. &lt;len=3D0000&gt;</SPAN></H4>

    1888. 

  1888. <P>The <B>keep-alive</B> message is a message with zero bytes, specified =

    1889. 

  1889. with=20

    1890. 

  1890. the length prefix set to zero.  There is no message ID and no payload.  =

    1891. 

  1891. Peers=20

    1892. 

  1892. may close a connection if they receive no messages (<B>keep-alive</B> or =

    1893. 

  1893. any=20

    1894. 

  1894. other message) for a certain period of time, so a keep-alive message =

    1895. 

  1895. must be=20

    1896. 

  1896. sent to maintain the connection <I>alive</I> if no command have been =

    1897. 

  1897. sent for a=20

    1898. 

  1898. given amount of time. This amount of time is generally two minutes.</P>

    1899. 

  1899. <H4> <SPAN id=3D"choke:_.3Clen.3D0001.3E.3Cid.3D0.3E" =

    1900. 

  1900. class=3D"mw-headline">choke:=20

    1901. 

  1901. &lt;len=3D0001&gt;&lt;id=3D0&gt;</SPAN></H4>

    1902. 

  1902. <P>The <B>choke</B> message is fixed-length and has no payload.</P>

    1903. 

  1903. <H4> <SPAN id=3D"unchoke:_.3Clen.3D0001.3E.3Cid.3D1.3E" =

    1904. 

  1904. class=3D"mw-headline">=20

    1905. 

  1905. unchoke: &lt;len=3D0001&gt;&lt;id=3D1&gt; </SPAN></H4>

    1906. 

  1906. <P>The <B>unchoke</B> message is fixed-length and has no payload.</P>

    1907. 

  1907. <H4> <SPAN id=3D"interested:_.3Clen.3D0001.3E.3Cid.3D2.3E" =

    1908. 

  1908. class=3D"mw-headline">=20

    1909. 

  1909. interested: &lt;len=3D0001&gt;&lt;id=3D2&gt; </SPAN></H4>

    1910. 

  1910. <P>The <B>interested</B> message is fixed-length and has no payload.</P>

    1911. 

  1911. <H4> <SPAN id=3D"not_interested:_.3Clen.3D0001.3E.3Cid.3D3.3E"=20

    1912. 

  1912. class=3D"mw-headline"> not interested: &lt;len=3D0001&gt;&lt;id=3D3&gt; =

    1913. 

  1913. </SPAN></H4>

    1914. 

  1914. <P>The <B>not interested</B> message is fixed-length and has no =

    1915. 

  1915. payload.</P>

    1916. 

  1916. <H4> <SPAN id=3D"have:_.3Clen.3D0005.3E.3Cid.3D4.3E.3Cpiece_index.3E" =

    1917. 

  1917. class=3D"mw-headline">=20

    1918. 

  1918. have: &lt;len=3D0005&gt;&lt;id=3D4&gt;&lt;piece index&gt; </SPAN></H4>

    1919. 

  1919. <P>The <B>have</B> message is fixed length.  The payload is the =

    1920. 

  1920. zero-based index=20

    1921. 

  1921. of a piece that has just been successfully downloaded and verified via =

    1922. 

  1922. the hash.

    1923. 

  1923. </P>

    1924. 

  1924. <P><I>Implementer's Note: That is the strict definition, in reality some =

    1925. 

  1925. games=20

    1926. 

  1926. may be played. In particular because peers are extremely unlikely to =

    1927. 

  1927. download=20

    1928. 

  1928. pieces that they already have, a peer may choose not to advertise having =

    1929. 

  1929. a piece=20

    1930. 

  1930. to a peer that already has that piece. At a minimum "HAVE suppression" =

    1931. 

  1931. will=20

    1932. 

  1932. result in a 50% reduction in the number of HAVE messages, this =

    1933. 

  1933. translates to=20

    1934. 

  1934. around a 25-35% reduction in protocol overhead. At the same time, it may =

    1935. 

  1935. be=20

    1936. 

  1936. worthwhile to send a HAVE message to a peer that has that piece already =

    1937. 

  1937. since it=20

    1938. 

  1938. will be useful in determining which piece is rare.</I></P>

    1939. 

  1939. <P><I>A malicious peer might also choose to advertise having pieces that =

    1940. 

  1940. it=20

    1941. 

  1941. knows the peer will never download. Due to this attempting to model =

    1942. 

  1942. peers using=20

    1943. 

  1943. this information is a <B>bad idea</B></I>.</P>

    1944. 

  1944. <H4> <SPAN =

    1945. 

  1945. id=3D"bitfield:_.3Clen.3D0001.2BX.3E.3Cid.3D5.3E.3Cbitfield.3E" =

    1946. 

  1946. class=3D"mw-headline">=20

    1947. 

  1947. bitfield: &lt;len=3D0001+X&gt;&lt;id=3D5&gt;&lt;bitfield&gt; =

    1948. 

  1948. </SPAN></H4>

    1949. 

  1949. <P>The <B>bitfield</B> message may only be sent immediately after the=20

    1950. 

  1950. handshaking sequence is completed, and before any other messages are =

    1951. 

  1951. sent.  It=20

    1952. 

  1952. is optional, and need not be sent if a client has no pieces.</P>

    1953. 

  1953. <P>The <B>bitfield</B> message is variable length, where X is the length =

    1954. 

  1954. of the=20

    1955. 

  1955. bitfield.  The payload is a bitfield representing the pieces that have =

    1956. 

  1956. been=20

    1957. 

  1957. successfully downloaded.  The high bit in the first byte corresponds to =

    1958. 

  1958. piece=20

    1959. 

  1959. index 0.  Bits that are cleared indicated a missing piece, and set bits =

    1960. 

  1960. indicate=20

    1961. 

  1961. a valid and available piece.  Spare bits at the end are set to zero.</P>

    1962. 

  1962. <P>Some clients (Deluge for example) send <B>bitfield</B> with missing =

    1963. 

  1963. pieces=20

    1964. 

  1964. even if it has all data. Then it sends rest of pieces as <B>have</B> =

    1965. 

  1965. messages.=20

    1966. 

  1966. They are saying this helps against ISP filtering of BitTorrent protocol. =

    1967. 

  1967. It is=20

    1968. 

  1968. called <B>lazy bitfield</B>.</P>

    1969. 

  1969. <P><I>A bitfield of the wrong length is considered an error. Clients =

    1970. 

  1970. should drop=20

    1971. 

  1971. the connection if they receive bitfields that are not of the correct =

    1972. 

  1972. size, or if=20

    1973. 

  1973. the bitfield has any of the spare bits set.</I></P>

    1974. 

  1974. <H4> <SPAN =

    1975. 

  1975. id=3D"request:_.3Clen.3D0013.3E.3Cid.3D6.3E.3Cindex.3E.3Cbegin.3E.3Clengt=

    1976. 

  1976. h.3E"=20

    1977. 

  1977. class=3D"mw-headline"> request:=20

    1978. 

  1978. &lt;len=3D0013&gt;&lt;id=3D6&gt;&lt;index&gt;&lt;begin&gt;&lt;length&gt; =

    1979. 

  1979. 

    1980. 

  1980. </SPAN></H4>

    1981. 

  1981. <P>The <B>request</B> message is fixed length, and is used to request a =

    1982. 

  1982. block. =20

    1983. 

  1983. The payload contains the following information:</P>

    1984. 

  1984. <UL>

    1985. 

  1985.   <LI> <B>index</B>: integer specifying the zero-based piece index</LI>

    1986. 

  1986.   <LI> <B>begin</B>: integer specifying the zero-based byte offset =

    1987. 

  1987. within the=20

    1988. 

  1988.   piece</LI>

    1989. 

  1989.   <LI> <B>length</B>: integer specifying the requested length.</LI></UL>

    1990. 

  1990. <P><I><B>This section is under dispute! Please use the <A =

    1991. 

  1991. class=3D"external text"=20

    1992. 

  1992. href=3D"http://wiki.theory.org/Talk:BitTorrentSpecification#Messages:_req=

    1993. 

  1993. uest"=20

    1994. 

  1994. rel=3D"nofollow">discussion page</A> to resolve this!</B></I></P>

    1995. 

  1995. <P><I><B>View #1</B></I>According to the official specification, "All =

    1996. 

  1996. current=20

    1997. 

  1997. implementations use 2^15 (32KB), and close connections which request an =

    1998. 

  1998. amount=20

    1999. 

  1999. greater than 2^17 (128KB)." As early as version 3 or 2004, this behavior =

    2000. 

  2000. was=20

    2001. 

  2001. changed to use 2^14 (16KB) blocks. As of version 4.0 or mid-2005, the =

    2002. 

  2002. mainline=20

    2003. 

  2003. disconnected on requests larger than 2^14 (16KB); and some clients have =

    2004. 

  2004. followed=20

    2005. 

  2005. suit. Note that block requests are smaller than pieces (&gt;=3D2^18 =

    2006. 

  2006. bytes), so=20

    2007. 

  2007. multiple requests will be needed to download a whole piece.</P>

    2008. 

  2008. <P><I>Strictly, the specification allows 2^15 (32KB) requests. The =

    2009. 

  2009. reality is=20

    2010. 

  2010. near all clients will now use 2^14 (16KB) requests. Due to clients that =

    2011. 

  2011. enforce=20

    2012. 

  2012. that size, it is recommended that implementations make requests of that =

    2013. 

  2013. size.=20

    2014. 

  2014. Due to smaller requests resulting in higher overhead due to tracking a =

    2015. 

  2015. greater=20

    2016. 

  2016. number of requests, implementers are advised against going below 2^14=20

    2017. 

  2017. (16KB).</I></P>

    2018. 

  2018. <P><I>The choice of request block size limit enforcement is not nearly =

    2019. 

  2019. so clear=20

    2020. 

  2020. cut. With mainline version 4 enforcing 16KB requests, most clients will =

    2021. 

  2021. use that=20

    2022. 

  2022. size. At the same time 2^14 (16KB) is the </I>semi<I>-official (only =

    2023. 

  2023. </I>semi<I>=20

    2024. 

  2024. because the official protocol document has not been updated) limit now, =

    2025. 

  2025. so=20

    2026. 

  2026. enforcing that isn't wrong. At the same time, allowing larger requests =

    2027. 

  2027. enlarges=20

    2028. 

  2028. the set of possible peers, and except on very low bandwidth connections=20

    2029. 

  2029. (&lt;256kbps) multiple blocks will be downloaded in one =

    2030. 

  2030. choke-timeperiod, thus=20

    2031. 

  2031. merely enforcing the old limit causes minimal performance degradation. =

    2032. 

  2032. Due to=20

    2033. 

  2033. this factor, it is recommended that only the older 2^17 (128KB) maximum =

    2034. 

  2034. size=20

    2035. 

  2035. limit be enforced.</I></P>

    2036. 

  2036. <P><I><B>View #2</B></I>This section has contained falsehoods for a =

    2037. 

  2037. large=20

    2038. 

  2038. portion of the time this page has existed. This is the third time I =

    2039. 

  2039. (uau) am=20

    2040. 

  2040. correcting this same section for incorrect information being added, so I =

    2041. 

  2041. won't=20

    2042. 

  2042. rewrite it completely since it'll probably be broken again... Current =

    2043. 

  2043. version=20

    2044. 

  2044. has at least the following errors: Mainline started using 2^14 (16384) =

    2045. 

  2045. byte=20

    2046. 

  2046. requests when it was still the only client in existence; only the =

    2047. 

  2047. "official=20

    2048. 

  2048. specification" still talked about the obsolete 32768 byte value which =

    2049. 

  2049. was in=20

    2050. 

  2050. reality neither the default size nor maximum allowed. In version 4 the =

    2051. 

  2051. request=20

    2052. 

  2052. behavior did not change, but the maximum allowed size did change to =

    2053. 

  2053. equal the=20

    2054. 

  2054. default size. In latest mainline versions the max has changed to 32768 =

    2055. 

  2055. (note=20

    2056. 

  2056. that this is the first appearance of 32768 for either default or max =

    2057. 

  2057. size since=20

    2058. 

  2058. the first ancient versions). "Most older clients use 32KB requests" is =

    2059. 

  2059. false.=20

    2060. 

  2060. Discussion of larger requests fails to take latency effects into =

    2061. 

  2061. account.</P>

    2062. 

  2062. <H4> <SPAN =

    2063. 

  2063. id=3D"piece:_.3Clen.3D0009.2BX.3E.3Cid.3D7.3E.3Cindex.3E.3Cbegin.3E.3Cblo=

    2064. 

  2064. ck.3E"=20

    2065. 

  2065. class=3D"mw-headline"> piece:=20

    2066. 

  2066. &lt;len=3D0009+X&gt;&lt;id=3D7&gt;&lt;index&gt;&lt;begin&gt;&lt;block&gt;=

    2067. 

  2067. =20

    2068. 

  2068. </SPAN></H4>

    2069. 

  2069. <P>The <B>piece</B> message is variable length, where X is the length of =

    2070. 

  2070. the=20

    2071. 

  2071. block.  The payload contains the following information:</P>

    2072. 

  2072. <UL>

    2073. 

  2073.   <LI> <B>index</B>: integer specifying the zero-based piece index</LI>

    2074. 

  2074.   <LI> <B>begin</B>: integer specifying the zero-based byte offset =

    2075. 

  2075. within the=20

    2076. 

  2076.   piece</LI>

    2077. 

  2077.   <LI> <B>block</B>: block of data, which is a subset of the piece =

    2078. 

  2078. specified by=20

    2079. 

  2079.   index.</LI></UL>

    2080. 

  2080. <H4> <SPAN =

    2081. 

  2081. id=3D"cancel:_.3Clen.3D0013.3E.3Cid.3D8.3E.3Cindex.3E.3Cbegin.3E.3Clength=

    2082. 

  2082. .3E"=20

    2083. 

  2083. class=3D"mw-headline"> cancel:=20

    2084. 

  2084. &lt;len=3D0013&gt;&lt;id=3D8&gt;&lt;index&gt;&lt;begin&gt;&lt;length&gt; =

    2085. 

  2085. 

    2086. 

  2086. </SPAN></H4>

    2087. 

  2087. <P>The <B>cancel</B> message is fixed length, and is used to cancel =

    2088. 

  2088. block=20

    2089. 

  2089. requests.  The payload is identical to that of the "request" message.  =

    2090. 

  2090. It is=20

    2091. 

  2091. typically used during "End Game" (see the Algorithms section below).</P>

    2092. 

  2092. <H4> <SPAN id=3D"port:_.3Clen.3D0003.3E.3Cid.3D9.3E.3Clisten-port.3E" =

    2093. 

  2093. class=3D"mw-headline">=20

    2094. 

  2094. port: &lt;len=3D0003&gt;&lt;id=3D9&gt;&lt;listen-port&gt; </SPAN></H4>

    2095. 

  2095. <P>The <B>port</B> message is sent by newer versions of the Mainline =

    2096. 

  2096. that=20

    2097. 

  2097. implements a DHT tracker. The listen port is the port this peer's DHT =

    2098. 

  2098. node is=20

    2099. 

  2099. listening on. This peer should be inserted in the local routing table =

    2100. 

  2100. (if DHT=20

    2101. 

  2101. tracker is supported).</P>

    2102. 

  2102. <H2> <SPAN id=3D"Algorithms" class=3D"mw-headline"> Algorithms =

    2103. 

  2103. </SPAN></H2>

    2104. 

  2104. <H3> <SPAN id=3D"Queuing" class=3D"mw-headline"> Queuing </SPAN></H3>

    2105. 

  2105. <P><I><B>This section is under dispute! Please use the <A =

    2106. 

  2106. class=3D"external text"=20

    2107. 

  2107. href=3D"http://wiki.theory.org/Talk:BitTorrentSpecification#Algorithms:_Q=

    2108. 

  2108. ueuing"=20

    2109. 

  2109. rel=3D"nofollow">discussion page</A> to resolve this!</B></I></P>

    2110. 

  2110. <P><I><B>View #1</B></I>In general peers are advised to keep a few =

    2111. 

  2111. unfullfilled=20

    2112. 

  2112. requests on each connection. This is done because otherwise a full round =

    2113. 

  2113. trip is=20

    2114. 

  2114. required from the download of one block to begining the download of a =

    2115. 

  2115. new block=20

    2116. 

  2116. (round trip between PIECE message and next REQUEST message). On links =

    2117. 

  2117. with high=20

    2118. 

  2118. BDP (bandwidth-delay-product, high latency or high bandwidth), this can =

    2119. 

  2119. result=20

    2120. 

  2120. in a substantial performance loss.</P>

    2121. 

  2121. <P><I>Implementer's note: This is the <B>most crucial performance =

    2122. 

  2122. item</B>. A=20

    2123. 

  2123. static queue of 10 requests is reasonable for 16KB blocks on a 5mbps =

    2124. 

  2124. link with=20

    2125. 

  2125. 50ms latency. Links with greater bandwidth are becoming very common so =

    2126. 

  2126. UI=20

    2127. 

  2127. designers are urged to make this readily available for changing. Notably =

    2128. 

  2128. cable=20

    2129. 

  2129. modems were known for traffic policing and increasing this might of =

    2130. 

  2130. alleviated=20

    2131. 

  2131. some of the problems caused by this.</I></P>

    2132. 

  2132. <P><I><B>View #2</B></I>NOTE: much of the information in this "Queuing" =

    2133. 

  2133. section=20

    2134. 

  2134. is false or misleading. I'll just note that the "defaults to 5 =

    2135. 

  2135. outstanding=20

    2136. 

  2136. requests" hasn't been true for a long time, "32 KB blocks" is misleading =

    2137. 

  2137. since=20

    2138. 

  2138. you normally don't use 32 KB blocks, and tuning queue length by changing =

    2139. 

  2139. it and=20

    2140. 

  2140. trying to measure the effects is a bad idea.</P>

    2141. 

  2141. <H3> <SPAN id=3D"Super_Seeding" class=3D"mw-headline"> Super Seeding =

    2142. 

  2142. </SPAN></H3>

    2143. 

  2143. <P><I>(This was not part of the original specification)</I></P>

    2144. 

  2144. <P><I>The super-seed feature in S-5.5 and on is a new seeding algorithm =

    2145. 

  2145. designed=20

    2146. 

  2146. to help a torrent initiator with limited bandwidth "pump up" a large =

    2147. 

  2147. torrent,=20

    2148. 

  2148. reducing the amount of data it needs to upload in order to spawn new =

    2149. 

  2149. seeds in=20

    2150. 

  2150. the torrent.</I></P>

    2151. 

  2151. <P><I>When a seeding client enters "super-seed mode", it will not act as =

    2152. 

  2152. a=20

    2153. 

  2153. standard seed, but masquerades as a normal client with no data.  As =

    2154. 

  2154. clients=20

    2155. 

  2155. connect, it will then inform them that it received a piece -- a piece =

    2156. 

  2156. that was=20

    2157. 

  2157. never sent, or if all pieces were already sent, is very rare.  This will =

    2158. 

  2158. induce=20

    2159. 

  2159. the client to attempt to download only that piece.</I></P>

    2160. 

  2160. <P><I>When the client has finished downloading the piece, the seed will =

    2161. 

  2161. not=20

    2162. 

  2162. inform it of any other pieces until it has seen the piece it had sent =

    2163. 

  2163. previously=20

    2164. 

  2164. present on at least one other client.  Until then, the client will not =

    2165. 

  2165. have=20

    2166. 

  2166. access to any of the other pieces of the seed, and therefore will not =

    2167. 

  2167. waste the=20

    2168. 

  2168. seed's bandwidth.</I></P>

    2169. 

  2169. <P><I>This method has resulted in much higher seeding efficiencies, by =

    2170. 

  2170. both=20

    2171. 

  2171. inducing peers into taking only the rarest data, reducing the amount of=20

    2172. 

  2172. redundant data sent, and limiting the amount of data sent to peers which =

    2173. 

  2173. do not=20

    2174. 

  2174. contribute to the swarm. Prior to this, a seed might have to upload 150% =

    2175. 

  2175. to 200%=20

    2176. 

  2176. of the total size of a torrent before other clients became seeds.  =

    2177. 

  2177. However, a=20

    2178. 

  2178. large torrent seeded with a single client running in super-seed mode was =

    2179. 

  2179. able to=20

    2180. 

  2180. do so after only uploading 105% of the data.  This is 150-200% more =

    2181. 

  2181. efficient=20

    2182. 

  2182. than when using a standard seed.</I></P>

    2183. 

  2183. <P><I>Super-seed mode is '</I>NOT<I> recommended for general use.  While =

    2184. 

  2184. it does=20

    2185. 

  2185. assist in the wider distribution of rare data, because it limits the =

    2186. 

  2186. selection=20

    2187. 

  2187. of pieces a client can downlad, it also limits the ability of those =

    2188. 

  2188. clients to=20

    2189. 

  2189. download data for pieces they have already partially retrieved.  =

    2190. 

  2190. Therefore,=20

    2191. 

  2191. super-seed mode is only recommended for initial seeding =

    2192. 

  2192. servers.</I></P><PRE><I>Why not rename it to e.g. "Initial Seeding Mode" =

    2193. 

  2193. or "Releaser Mode" then?</I>=0A=

    2194. 

  2194. </PRE>

    2195. 

  2195. <H3> <SPAN id=3D"Piece_downloading_strategy" class=3D"mw-headline"> =

    2196. 

  2196. Piece=20

    2197. 

  2197. downloading strategy </SPAN></H3>

    2198. 

  2198. <P>Clients may choose to download pieces in random order.</P>

    2199. 

  2199. <P><I>A better strategy is to download pieces in </I><A =

    2200. 

  2200. title=3D"Availability"=20

    2201. 

  2201. href=3D"http://wiki.theory.org/Availability">rarest first</A><I> order.  =

    2202. 

  2202. The=20

    2203. 

  2203. client can determine this by keeping the initial bitfield from each =

    2204. 

  2204. peer, and=20

    2205. 

  2205. updating it with every <B>have</B> message.  Then, the client can =

    2206. 

  2206. download the=20

    2207. 

  2207. pieces that appear least frequently in these peer bitfields. Note that =

    2208. 

  2208. any=20

    2209. 

  2209. Rarest First strategy should include randomization among at least =

    2210. 

  2210. several of the=20

    2211. 

  2211. least common pieces, as having many clients all attempting to jump on =

    2212. 

  2212. the same=20

    2213. 

  2213. "least common" piece would be counter productive.</I></P>

    2214. 

  2214. <H3> <SPAN id=3D"End_Game" class=3D"mw-headline"> End Game </SPAN></H3>

    2215. 

  2215. <P>When a download is almost complete, there's a tendency for the last =

    2216. 

  2216. few=20

    2217. 

  2217. blocks to trickle in slowly. To speed this up, the client sends requests =

    2218. 

  2218. for all=20

    2219. 

  2219. of its missing blocks to all of its peers. To keep this from becoming =

    2220. 

  2220. horribly=20

    2221. 

  2221. inefficient, the client also sends a cancel to everyone else every time =

    2222. 

  2222. a block=20

    2223. 

  2223. arrives.</P>

    2224. 

  2224. <P><I>There is no documented thresholds, recommended percentages, or =

    2225. 

  2225. block=20

    2226. 

  2226. counts that could be used as a guide or Recommended Best Practice =

    2227. 

  2227. here.</I></P>

    2228. 

  2228. <P><I>When to enter end game mode is an area of discussion. Some clients =

    2229. 

  2229. enter=20

    2230. 

  2230. end game when all pieces have been requested. Others wait until the =

    2231. 

  2231. number of=20

    2232. 

  2232. blocks left is lower than the number of blocks in transit, and no more =

    2233. 

  2233. than 20.=20

    2234. 

  2234. There seems to be agreement that it's a good idea to keep the number of =

    2235. 

  2235. pending=20

    2236. 

  2236. blocks low (1 or 2 blocks) to minimize the overhead, and if you =

    2237. 

  2237. randomize the=20

    2238. 

  2238. blocks requested, there's a lower chance of downloading duplicates. More =

    2239. 

  2239. on the=20

    2240. 

  2240. protocol overhead can be found here:</I> <A class=3D"external free" =

    2241. 

  2241. href=3D"http://hal.inria.fr/inria-00000156/en"=20

    2242. 

  2242. rel=3D"nofollow">http://hal.inria.fr/inria-00000156/en</A>.</P>

    2243. 

  2243. <H3> <SPAN id=3D"Choking_and_Optimistic_Unchoking" =

    2244. 

  2244. class=3D"mw-headline"> Choking=20

    2245. 

  2245. and Optimistic Unchoking </SPAN></H3>

    2246. 

  2246. <P>Choking is done for several reasons. TCP congestion control behaves =

    2247. 

  2247. very=20

    2248. 

  2248. poorly when sending over many connections at once. Also, choking lets =

    2249. 

  2249. each peer=20

    2250. 

  2250. use a tit-for-tat-ish algorithm to ensure that they get a consistent =

    2251. 

  2251. download=20

    2252. 

  2252. rate.</P>

    2253. 

  2253. <P>The choking algorithm described below is the currently deployed one. =

    2254. 

  2254. It is=20

    2255. 

  2255. very important that all new algorithms work well both in a network =

    2256. 

  2256. consisting=20

    2257. 

  2257. entirely of themselves and in a network consisting mostly of this =

    2258. 

  2258. one.</P>

    2259. 

  2259. <P>There are several criteria a good choking algorithm should meet. It =

    2260. 

  2260. should=20

    2261. 

  2261. cap the number of simultaneous uploads for good TCP performance. It =

    2262. 

  2262. should avoid=20

    2263. 

  2263. choking and unchoking quickly, known as 'fibrillation'. It should =

    2264. 

  2264. reciprocate to=20

    2265. 

  2265. peers who let it download. Finally, it should try out unused connections =

    2266. 

  2266. once in=20

    2267. 

  2267. a while to find out if they might be better than the currently used =

    2268. 

  2268. ones, known=20

    2269. 

  2269. as optimistic unchoking.</P>

    2270. 

  2270. <P>The currently deployed choking algorithm avoids fibrillation by only =

    2271. 

  2271. changing=20

    2272. 

  2272. choked peers once every ten seconds.</P>

    2273. 

  2273. <P>Reciprocation and number of uploads capping is managed by unchoking =

    2274. 

  2274. the four=20

    2275. 

  2275. peers which have the best upload rate and are interested.  This =

    2276. 

  2276. maximizes the=20

    2277. 

  2277. client's download rate.  These four peers are referred to as =

    2278. 

  2278. <I>downloaders</I>,=20

    2279. 

  2279. because they are interested in downloading from the client.</P>

    2280. 

  2280. <P>Peers which have a better upload rate (as compared to the =

    2281. 

  2281. <I>downloaders</I>)=20

    2282. 

  2282. but aren't interested get unchoked.  If they become interested, the=20

    2283. 

  2283. <I>downloader</I> with the worst upload rate gets choked. If a client =

    2284. 

  2284. has a=20

    2285. 

  2285. complete file, it uses its upload rate rather than its download rate to =

    2286. 

  2286. decide=20

    2287. 

  2287. which peers to unchoke.</P>

    2288. 

  2288. <P>For optimistic unchoking, at any one time there is a single peer =

    2289. 

  2289. which is=20

    2290. 

  2290. unchoked regardless of its upload rate (if interested, it counts as one =

    2291. 

  2291. of the=20

    2292. 

  2292. four allowed <I>downloaders</I>).  Which peer is optimistically unchoked =

    2293. 

  2293. rotates=20

    2294. 

  2294. every 30 seconds.  Newly connected peers are three times as likely to =

    2295. 

  2295. start as=20

    2296. 

  2296. the current optimistic unchoke as anywhere else in the rotation.  This =

    2297. 

  2297. gives=20

    2298. 

  2298. them a decent chance of getting a complete piece to upload.</P>

    2299. 

  2299. <H4> <SPAN id=3D"Anti-snubbing" class=3D"mw-headline"> Anti-snubbing =

    2300. 

  2300. </SPAN></H4>

    2301. 

  2301. <P>Occasionally a <A class=3D"new" title=3D"BitTorrent (page does not =

    2302. 

  2302. exist)" =

    2303. 

  2303. href=3D"http://wiki.theory.org/index.php?title=3DBitTorrent&amp;action=3D=

    2304. 

  2304. edit&amp;redlink=3D1">BitTorrent</A>=20

    2305. 

  2305. peer will be choked by all peers which it was formerly downloading from. =

    2306. 

  2306. In such=20

    2307. 

  2307. cases it will usually continue to get poor download rates until the =

    2308. 

  2308. optimistic=20

    2309. 

  2309. unchoke finds better peers. To mitigate this problem, when over a minute =

    2310. 

  2310. goes by=20

    2311. 

  2311. without getting any piece data while downloading from a peer, <A =

    2312. 

  2312. class=3D"new"=20

    2313. 

  2313. title=3D"BitTorrent (page does not exist)" =

    2314. 

  2314. href=3D"http://wiki.theory.org/index.php?title=3DBitTorrent&amp;action=3D=

    2315. 

  2315. edit&amp;redlink=3D1">BitTorrent</A>=20

    2316. 

  2316. assumes it is "snubbed" by that peer and doesn't upload to it except as =

    2317. 

  2317. an=20

    2318. 

  2318. optimistic unchoke. This frequently results in more than one concurrent=20

    2319. 

  2319. optimistic unchoke, (an exception to the exactly one optimistic unchoke =

    2320. 

  2320. rule=20

    2321. 

  2321. mentioned above), which causes download rates to recover much more =

    2322. 

  2322. quickly when=20

    2323. 

  2323. they falter.</P>

    2324. 

  2324. <H2> <SPAN id=3D"Official_Extensions_To_The_Protocol" =

    2325. 

  2325. class=3D"mw-headline">=20

    2326. 

  2326. Official Extensions To The Protocol </SPAN></H2>

    2327. 

  2327. <P>Currently there are a few official extensions to the protocol.</P>

    2328. 

  2328. <H4> <SPAN id=3D"Fast_Peers_Extensions" class=3D"mw-headline"> Fast =

    2329. 

  2329. Peers Extensions=20

    2330. 

  2330. </SPAN></H4>

    2331. 

  2331. <UL>

    2332. 

  2332.   <LI>Reserved Bit: The third least significant bit in the 8th reserved =

    2333. 

  2333. byte=20

    2334. 

  2334.   i.e. reserved[7] |=3D 0x04 </LI></UL>

    2335. 

  2335. <P>These extensions serve multiple purposes. They allow a peer to more =

    2336. 

  2336. quickly=20

    2337. 

  2337. bootstrap into a swarm by giving a peer a specific set of pieces which =

    2338. 

  2338. they will=20

    2339. 

  2339. be allowed download regardless of choked status. They reduce message =

    2340. 

  2340. overhead by=20

    2341. 

  2341. adding HaveAll and HaveNone messages and allow explicit rejection of =

    2342. 

  2342. piece=20

    2343. 

  2343. requests whereas previously only implicit rejection was possible meaning =

    2344. 

  2344. that a=20

    2345. 

  2345. peer might be left waiting for a piece that would never be =

    2346. 

  2346. delivered.</P>

    2347. 

  2347. <P>The specification is documented at the <A class=3D"new" =

    2348. 

  2348. title=3D"BitTorrent (page does not exist)"=20

    2349. 

  2349. href=3D"http://wiki.theory.org/index.php?title=3DBitTorrent&amp;action=3D=

    2350. 

  2350. edit&amp;redlink=3D1">BitTorrent</A>=20

    2351. 

  2351. site here: <A class=3D"external free" =

    2352. 

  2352. href=3D"http://bittorrent.org/beps/bep_0006.html"=20

    2353. 

  2353. rel=3D"nofollow">http://bittorrent.org/beps/bep_0006.html</A>.</P>

    2354. 

  2354. <H4> <SPAN id=3D"Distributed_Hash_Table" class=3D"mw-headline"> =

    2355. 

  2355. Distributed Hash=20

    2356. 

  2356. Table </SPAN></H4>

    2357. 

  2357. <UL>

    2358. 

  2358.   <LI> Reserved Bit: The last bit in the 8th reserved byte i.e. =

    2359. 

  2359. reserved[7] |=3D=20

    2360. 

  2360.   0x01</LI></UL>

    2361. 

  2361. <P>This extension is to allow for the tracking of peers downloading =

    2362. 

  2362. torrents=20

    2363. 

  2363. without the use of a standard tracker. A peer implementing this protocol =

    2364. 

  2364. becomes=20

    2365. 

  2365. a "tracker" and stores lists of other nodes/peers which can be used to =

    2366. 

  2366. locate=20

    2367. 

  2367. new peers.</P>

    2368. 

  2368. <P>The specification is documented at the <A class=3D"new" =

    2369. 

  2369. title=3D"BitTorrent (page does not exist)"=20

    2370. 

  2370. href=3D"http://wiki.theory.org/index.php?title=3DBitTorrent&amp;action=3D=

    2371. 

  2371. edit&amp;redlink=3D1">BitTorrent</A>=20

    2372. 

  2372. site here: <A class=3D"external free" =

    2373. 

  2373. href=3D"http://bittorrent.org/beps/bep_0005.html"=20

    2374. 

  2374. rel=3D"nofollow">http://bittorrent.org/beps/bep_0005.html</A>.</P>

    2375. 

  2375. <P>BEP-32 extends the DHT with support for IPv6, and updates the =

    2376. 

  2376. specification=20

    2377. 

  2377. in some minor ways.  <A class=3D"external free" =

    2378. 

  2378. href=3D"http://www.pps.jussieu.fr/~jch/software/bittorrent/bep-dht-ipv6.h=

    2379. 

  2379. tml"=20

    2380. 

  2380. rel=3D"nofollow">http://www.pps.jussieu.fr/~jch/software/bittorrent/bep-d=

    2381. 

  2381. ht-ipv6.html</A>

    2382. 

  2382. </P>

    2383. 

  2383. <H4> <SPAN id=3D"Connection_Obfuscation" class=3D"mw-headline"> =

    2384. 

  2384. Connection=20

    2385. 

  2385. Obfuscation </SPAN></H4>

    2386. 

  2386. <P>This extension allows the creation of obfuscated (encrypted) =

    2387. 

  2387. connections=20

    2388. 

  2388. between peers. This can be used to bypass ISPs throttling BitTorrent =

    2389. 

  2389. traffic.

    2390. 

  2390. </P>

    2391. 

  2391. <P>The specification is documented at <A class=3D"external free" =

    2392. 

  2392. href=3D"http://www.azureuswiki.com/index.php/Message_Stream_Encryption"=20

    2393. 

  2393. rel=3D"nofollow">http://www.azureuswiki.com/index.php/Message_Stream_Encr=

    2394. 

  2394. yption</A>.

    2395. 

  2395. </P>

    2396. 

  2396. <P><I> The documentation is fairly complete, but ideally it would be =

    2397. 

  2397. clarified=20

    2398. 

  2398. on several points including guidance on when encrypted connections =

    2399. 

  2399. should be=20

    2400. 

  2400. attempted, fallback procedures to regular connections etc. </I></P>

    2401. 

  2401. <H2> <SPAN id=3D"Unofficial_Extensions_To_The_Protocol" =

    2402. 

  2402. class=3D"mw-headline">=20

    2403. 

  2403. Unofficial Extensions To The Protocol </SPAN></H2>

    2404. 

  2404. <H4> <SPAN id=3D"Azureus_Messaging_Protocol" class=3D"mw-headline"> =

    2405. 

  2405. Azureus=20

    2406. 

  2406. Messaging Protocol </SPAN></H4>

    2407. 

  2407. <UL>

    2408. 

  2408.   <LI> Reserved Bit: 1</LI></UL>

    2409. 

  2409. <P>A protocol in its own right - if two clients indicate they support =

    2410. 

  2410. the=20

    2411. 

  2411. protocol, then they should switch over to using it. It allows normal =

    2412. 

  2412. BitTorrent=20

    2413. 

  2413. as well extension messages to be sent over it, and is documented <A =

    2414. 

  2414. class=3D"external text"=20

    2415. 

  2415. href=3D"http://www.azureuswiki.com/index.php/Azureus_messaging_protocol" =

    2416. 

  2416. rel=3D"nofollow">here</A>.=20

    2417. 

  2417. Currently implemented by Azureus and Transmission.</P>

    2418. 

  2418. <P>It is not possible to use both this protocol and the LibTorrent =

    2419. 

  2419. extension=20

    2420. 

  2420. protocol at the same time - if both clients indicate they support both, =

    2421. 

  2421. then=20

    2422. 

  2422. they should follow the semantics defined by the <A class=3D"external =

    2423. 

  2423. text" =

    2424. 

  2424. href=3D"http://www.azureuswiki.com/index.php/Extension_negotiation_protoc=

    2425. 

  2425. ol"=20

    2426. 

  2426. rel=3D"nofollow">Extension Negotiation Protocol</A>.</P>

    2427. 

  2427. <H4> <SPAN id=3D"WebSeeding" class=3D"mw-headline"> WebSeeding =

    2428. 

  2428. </SPAN></H4>

    2429. 

  2429. <P>The possibility to seed a torrent via a web server is generally =

    2430. 

  2430. called=20

    2431. 

  2431. WebSeeding. It allows the HTTP server to work as a peer in the =

    2432. 

  2432. BitTorrent=20

    2433. 

  2433. network.</P>

    2434. 

  2434. <P>There are at least two specification for how to combine a torrent =

    2435. 

  2435. download=20

    2436. 

  2436. with a HTTP download. The first standard, implemented by BitTornado is =

    2437. 

  2437. quite=20

    2438. 

  2438. easy to implement in the client, but is intrusive on the HTTP in that it =

    2439. 

  2439. 

    2440. 

  2440. requires a script handling requests on the server side. i.e. A plain =

    2441. 

  2441. HTTP server=20

    2442. 

  2442. that just serves plain files isn't enough. The benfits is that the =

    2443. 

  2443. script can be=20

    2444. 

  2444. more abuse resistant. This specification is found here: <A =

    2445. 

  2445. class=3D"external free"=20

    2446. 

  2446. href=3D"http://bittornado.com/docs/webseed-spec.txt"=20

    2447. 

  2447. rel=3D"nofollow">http://bittornado.com/docs/webseed-spec.txt</A>.</P>

    2448. 

  2448. <P>The second specification requires slightly more from the client, but=20

    2449. 

  2449. downloads from plain HTTP servers. It is specified here: <A =

    2450. 

  2450. class=3D"external free"=20

    2451. 

  2451. href=3D"http://www.getright.com/seedtorrent.html"=20

    2452. 

  2452. rel=3D"nofollow">http://www.getright.com/seedtorrent.html</A>. It has =

    2453. 

  2453. been=20

    2454. 

  2454. implemented by GetRight, libtorrent, Mainline, BitComet, Vuze.</P>

    2455. 

  2455. <H4> <SPAN id=3D"Extension_protocol" class=3D"mw-headline"> Extension =

    2456. 

  2456. protocol=20

    2457. 

  2457. </SPAN></H4>

    2458. 

  2458. <UL>

    2459. 

  2459.   <LI> Reserved Bit: 44, the fourth most significant bit in the 6th =

    2460. 

  2460. reserved=20

    2461. 

  2461.   byte i.e. reserved[5] |=3D 0x10</LI></UL>

    2462. 

  2462. <P>This is a protocol for exchanging extension information and was =

    2463. 

  2463. derived from=20

    2464. 

  2464. an early version of azureus' extension protocol. It adds one message for =

    2465. 

  2465. 

    2466. 

  2466. exchanging arbitrary handshake information including defined extension =

    2467. 

  2467. messages,=20

    2468. 

  2468. mapping extensions to specific message IDs. It is documented here:<A =

    2469. 

  2469. class=3D"external free"=20

    2470. 

  2470. href=3D"http://www.libtorrent.org/extension_protocol.html"=20

    2471. 

  2471. rel=3D"nofollow">http://www.libtorrent.org/extension_protocol.html</A> =

    2472. 

  2472. and is=20

    2473. 

  2473. implemented at least by libtorrent, uTorrent, Mainline, Transmission, =

    2474. 

  2474. Azureus=20

    2475. 

  2475. and BitComet.</P>

    2476. 

  2476. <P>It is not possible to use both this protocol and the Azureus =

    2477. 

  2477. Messaging=20

    2478. 

  2478. Protocol at the same time - if both clients indicate they support both, =

    2479. 

  2479. then=20

    2480. 

  2480. they should follow the semantics defined by the <A class=3D"external =

    2481. 

  2481. text" =

    2482. 

  2482. href=3D"http://www.azureuswiki.com/index.php/Extension_negotiation_protoc=

    2483. 

  2483. ol"=20

    2484. 

  2484. rel=3D"nofollow">Extension Negotiation Protocol</A>.</P>

    2485. 

  2485. <H4> <SPAN id=3D"Extension_Negotiation_Protocol" class=3D"mw-headline"> =

    2486. 

  2486. Extension=20

    2487. 

  2487. Negotiation Protocol </SPAN></H4>

    2488. 

  2488. <UL>

    2489. 

  2489.   <LI> Reserved bits: 47 and 48</LI></UL>

    2490. 

  2490. <P>These bits are used to allow two clients that support both the =

    2491. 

  2491. Azureus=20

    2492. 

  2492. Messaging Protocol and LibTorrent's extension protocol to decide which =

    2493. 

  2493. of the=20

    2494. 

  2494. two extensions should be used for communication, and is defined <A =

    2495. 

  2495. class=3D"external text"=20

    2496. 

  2496. href=3D"http://www.azureuswiki.com/index.php/Extension_negotiation_protoc=

    2497. 

  2497. ol" rel=3D"nofollow">here</A>.

    2498. 

  2498. </P>

    2499. 

  2499. <H4> <SPAN id=3D"BitTorrent_Location-aware_Protocol_1.0" =

    2500. 

  2500. class=3D"mw-headline">=20

    2501. 

  2501. BitTorrent Location-aware Protocol 1.0 </SPAN></H4>

    2502. 

  2502. <UL>

    2503. 

  2503.   <LI> Reserved Bit: 21</LI></UL>

    2504. 

  2504. <P>A Protocol, considering peers location (in geographical terms) for =

    2505. 

  2505. better=20

    2506. 

  2506. performance. Specification can be found <A class=3D"external text" =

    2507. 

  2507. href=3D"http://wiki.theory.org/BitTorrent_Location-aware_Protocol_1.0_Spe=

    2508. 

  2508. cification"=20

    2509. 

  2509. rel=3D"nofollow">here</A>.</P>

    2510. 

  2510. <H4> <SPAN id=3D"SimpleBT_Extension_Protocol" class=3D"mw-headline"> =

    2511. 

  2511. SimpleBT=20

    2512. 

  2512. Extension Protocol </SPAN></H4>

    2513. 

  2513. <UL>

    2514. 

  2514.   <LI> Reserved Bits: fist reserved byte =3D 0x01, following bytes may =

    2515. 

  2515. need to be=20

    2516. 

  2516.   set to zero</LI></UL>

    2517. 

  2517. <P>An extension using message id 9 to add peer exchange and connection=20

    2518. 

  2518. statistics exchange. The specification can be found <A class=3D"external =

    2519. 

  2519. text"=20

    2520. 

  2520. href=3D"http://web.archive.org/web/20031002201124/btfans.3322.org/simpleb=

    2521. 

  2521. t/ProtocalExtension.txt"=20

    2522. 

  2522. rel=3D"nofollow">here</A>. The extension was in use in SimpleBT 0.32 to =

    2523. 

  2523. 0.36.1.=20

    2524. 

  2524. Later versions of SimpleBT were called BitComet and used the similar but =

    2525. 

  2525. 

    2526. 

  2526. incompatible BitComet Extension Protocol.</P>

    2527. 

  2527. <H4> <SPAN id=3D"BitComet_Extension_Protocol" class=3D"mw-headline"> =

    2528. 

  2528. BitComet=20

    2529. 

  2529. Extension Protocol </SPAN></H4>

    2530. 

  2530. <UL>

    2531. 

  2531.   <LI> Reserved Bits: first two reserved bytes =3D "ex"</LI></UL>

    2532. 

  2532. <P>There appears to be no official documentation.</P>

    2533. 

  2533. <P>In this protocol a peer announces the supported extensions by sending =

    2534. 

  2534. a=20

    2535. 

  2535. message &lt;len=3D0001+X&gt;&lt;id=3D0xA0&gt;&lt;extension =

    2536. 

  2536. 1&gt;...&lt;extension=20

    2537. 

  2537. X&gt; where &lt;extension n&gt; is (usually) the message id of the =

    2538. 

  2538. supported=20

    2539. 

  2539. extension. When an extension consists of multiple messages, all ids need =

    2540. 

  2540. to be=20

    2541. 

  2541. mentioned.</P>

    2542. 

  2542. <P>Extensions currently in use (TODO: reverse engineer semantics):</P>

    2543. 

  2543. <UL>

    2544. 

  2544.   <LI> 0xA0 (EXT_SUPPORT) see above, needs to be included in its =

    2545. 

  2545. parameter list

    2546. 

  2546.   </LI>

    2547. 

  2547.   <LI> 0xA1 (EXT_PEERREQ) ask for peer exchange, used in conjunction =

    2548. 

  2548. with=20

    2549. 

  2549.   EXT_PEERS</LI>

    2550. 

  2550.   <LI> 0xA2 (EXT_PEERS) in reply to EXT_PEERREQ and for updates =

    2551. 

  2551. afterwards</LI>

    2552. 

  2552.   <LI> 0xA3 (EXT_AUTH_SEED) appeared in BitComet 0.53, used in =

    2553. 

  2553. conjunction with=20

    2554. 

  2554.   EXT_AUTH_CRYPTOED</LI>

    2555. 

  2555.   <LI> 0xA4 (EXT_AUTH_CRYPTOED)</LI>

    2556. 

  2556.   <LI> 0xA5 (EXT_CONNGRANT) appeared in BitComet 0.48, used in =

    2557. 

  2557. conjunction with=20

    2558. 

  2558.   EXT_CONNACCEPT</LI>

    2559. 

  2559.   <LI> 0xA6 (EXT_CONNACCEPT)</LI>

    2560. 

  2560.   <LI> 0x06 (?) announced by BitSpirit instead of EXT_CONNACCEPT</LI>

    2561. 

  2561.   <LI> 0xA7 (EXT_CHAT_MESSAGE) appeared in BitComet 0.53, vanished in =

    2562. 

  2562. 0.71</LI>

    2563. 

  2563.   <LI> 0xA9 (EXT_HASH_REQ) appeared in BitComet 0.54, vanished in 0.71, =

    2564. 

  2564. used in=20

    2565. 

  2565.   conjunction with EXT_HASH</LI>

    2566. 

  2566.   <LI> 0xAA (EXT_HASH)</LI>

    2567. 

  2567.   <LI> 0xAB (EXT_REPORT_RATE_old) appeared in BitComet 0.54, was =

    2568. 

  2568. replaced by=20

    2569. 

  2569.   EXT_REPORT_RATE_new in 0.57</LI>

    2570. 

  2570.   <LI> 0xAC (EXT_REPORT_INFO) appeared in BitComet 0.54, vanished in =

    2571. 

  2571. 0.71,=20

    2572. 

  2572.   reappeared in 0.82</LI>

    2573. 

  2573.   <LI> 0xAD (EXT_REPORT_RATE_new) appeared in BitComet 0.57, vanished in =

    2574. 

  2574. 0.75,=20

    2575. 

  2575.   reappeared in 0.82</LI>

    2576. 

  2576.   <LI> 0xAE (EXT_BC_PASSPORT) appeared in BitComet 0.75</LI>

    2577. 

  2577.   <LI> 0xAF (EXT_DHE_PREFERRED) appeared in BitComet 0.75</LI>

    2578. 

  2578.   <LI> 0xB0 (?) appeared in BitComet 0.86</LI>

    2579. 

  2579.   <LI> 0xC0 (?) does not correspond to a message id, appeared in =

    2580. 

  2580. BitComet 0.49

    2581. 

  2581.   </LI></UL>

    2582. 

  2582. <P>A minimum implementation needs only accept EXT_SUPPORT, but =

    2583. 

  2583. EXT_PEERREQ and=20

    2584. 

  2584. EXT_PEERS are supported by all known implementations.</P>

    2585. 

  2585. <H2> <SPAN id=3D"Reserved_Bytes" class=3D"mw-headline"> Reserved Bytes =

    2586. 

  2586. </SPAN></H2>

    2587. 

  2587. <P><I>The reserved bits are numbered 1-64 in the following table for =

    2588. 

  2588. ease of=20

    2589. 

  2589. identification. Bit 1 corresponds to the most significant bit of the =

    2590. 

  2590. first=20

    2591. 

  2591. reserved byte. Bit 8 corresponds to the least significant bit of the =

    2592. 

  2592. first=20

    2593. 

  2593. reserved byte (i.e. byte[0] |=3D 0x01). Bit 64 is the least significant =

    2594. 

  2594. bit of the=20

    2595. 

  2595. last reserved byte i.e. byte[7] |=3D 0x01</I></P>

    2596. 

  2596. <P><I> An orange bit is a known unofficial extension, a red bit is an =

    2597. 

  2597. unknown=20

    2598. 

  2598. unofficial extension.</I></P>

    2599. 

  2599. <TABLE border=3D"1">

    2600. 

  2600.   <CAPTION> Reserved Bits</CAPTION>

    2601. 

  2601.   <TBODY>

    2602. 

  2602.   <TR>

    2603. 

  2603.     <TH> Bit </TH>

    2604. 

  2604.     <TH> Use </TH>

    2605. 

  2605.     <TH> Azureus </TH>

    2606. 

  2606.     <TH> BitComet </TH>

    2607. 

  2607.     <TH> MainLine </TH>

    2608. 

  2608.     <TH> MonoTorrent </TH>

    2609. 

  2609.     <TH> =C2=B5Torrent </TH>

    2610. 

  2610.     <TH> libtorrent </TH>

    2611. 

  2611.     <TH> KTorrent </TH>

    2612. 

  2612.     <TH> BitLord </TH>

    2613. 

  2613.     <TH> XBT </TH>

    2614. 

  2614.     <TH> Transmission</TH></TR>

    2615. 

  2615.   <TR style=3D"background: orange;">

    2616. 

  2616.     <TD> 1 </TD>

    2617. 

  2617.     <TD> Azureus Extended Messaging </TD>

    2618. 

  2618.     <TD style=3D"background: rgb(136, 255, 136); text-align: center;"> =

    2619. 

  2619. Yes </TD>

    2620. 

  2620.     <TD style=3D"text-align: center;">&nbsp;? </TD>

    2621. 

  2621.     <TD style=3D"text-align: center;">&nbsp;? </TD>

    2622. 

  2622.     <TD style=3D"text-align: center;">&nbsp;? </TD>

    2623. 

  2623.     <TD style=3D"text-align: center;">&nbsp;? </TD>

    2624. 

  2624.     <TD style=3D"text-align: center;"> No </TD>

    2625. 

  2625.     <TD style=3D"text-align: center;"> No </TD>

    2626. 

  2626.     <TD style=3D"text-align: center;"> No </TD>

    2627. 

  2627.     <TD style=3D"text-align: center;"> No </TD>

    2628. 

  2628.     <TD style=3D"background: rgb(136, 255, 136); text-align: center;"> =

    2629. 

  2629. Yes</TD></TR>

    2630. 

  2630.   <TR style=3D"background: orange;">

    2631. 

  2631.     <TD> 1-16 </TD>

    2632. 

  2632.     <TD> BitComet Extension protocol </TD>

    2633. 

  2633.     <TD style=3D"text-align: center;"> No </TD>

    2634. 

  2634.     <TD style=3D"background: rgb(136, 255, 136); text-align: center;"> =

    2635. 

  2635. Yes </TD>

    2636. 

  2636.     <TD style=3D"text-align: center;"> No </TD>

    2637. 

  2637.     <TD style=3D"text-align: center;"> No </TD>

    2638. 

  2638.     <TD style=3D"text-align: center;"> No </TD>

    2639. 

  2639.     <TD style=3D"text-align: center;"> No </TD>

    2640. 

  2640.     <TD style=3D"text-align: center;"> No </TD>

    2641. 

  2641.     <TD style=3D"background: rgb(136, 255, 136); text-align: center;"> =

    2642. 

  2642. Yes </TD>

    2643. 

  2643.     <TD style=3D"text-align: center;"> No </TD>

    2644. 

  2644.     <TD style=3D"text-align: center;"> No</TD></TR>

    2645. 

  2645.   <TR style=3D"background: orange;">

    2646. 

  2646.     <TD> 21 </TD>

    2647. 

  2647.     <TD> BitTorrent Location-aware Protocol 1.0 </TD>

    2648. 

  2648.     <TD style=3D"text-align: center;"> No </TD>

    2649. 

  2649.     <TD style=3D"text-align: center;"> No </TD>

    2650. 

  2650.     <TD style=3D"text-align: center;"> No </TD>

    2651. 

  2651.     <TD style=3D"text-align: center;"> No </TD>

    2652. 

  2652.     <TD style=3D"text-align: center;"> No </TD>

    2653. 

  2653.     <TD style=3D"text-align: center;"> No </TD>

    2654. 

  2654.     <TD style=3D"text-align: center;"> No </TD>

    2655. 

  2655.     <TD style=3D"text-align: center;"> No </TD>

    2656. 

  2656.     <TD style=3D"text-align: center;"> No </TD>

    2657. 

  2657.     <TD style=3D"text-align: center;"> No</TD></TR>

    2658. 

  2658.   <TR style=3D"background: orange;">

    2659. 

  2659.     <TD> 44 </TD>

    2660. 

  2660.     <TD> Extension protocol </TD>

    2661. 

  2661.     <TD style=3D"background: rgb(136, 255, 136); text-align: center;"> =

    2662. 

  2662. Yes </TD>

    2663. 

  2663.     <TD style=3D"background: rgb(136, 255, 136); text-align: center;"> =

    2664. 

  2664. Yes </TD>

    2665. 

  2665.     <TD style=3D"background: rgb(136, 255, 136); text-align: center;"> =

    2666. 

  2666. Yes </TD>

    2667. 

  2667.     <TD style=3D"background: rgb(136, 255, 136); text-align: center;"> =

    2668. 

  2668. Yes </TD>

    2669. 

  2669.     <TD style=3D"background: rgb(136, 255, 136); text-align: center;"> =

    2670. 

  2670. Yes </TD>

    2671. 

  2671.     <TD style=3D"background: rgb(136, 255, 136); text-align: center;"> =

    2672. 

  2672. Yes </TD>

    2673. 

  2673.     <TD style=3D"text-align: center;"> No </TD>

    2674. 

  2674.     <TD style=3D"text-align: center;"> No </TD>

    2675. 

  2675.     <TD style=3D"background: rgb(136, 255, 136); text-align: center;"> =

    2676. 

  2676. Yes </TD>

    2677. 

  2677.     <TD style=3D"background: rgb(136, 255, 136); text-align: center;"> =

    2678. 

  2678. Yes</TD></TR>

    2679. 

  2679.   <TR style=3D"background: orange;">

    2680. 

  2680.     <TD> 47 - 48 </TD>

    2681. 

  2681.     <TD> Extension Negotiation Protocol </TD>

    2682. 

  2682.     <TD style=3D"background: rgb(136, 255, 136); text-align: center;"> =

    2683. 

  2683. Yes </TD>

    2684. 

  2684.     <TD style=3D"text-align: center;"> No </TD>

    2685. 

  2685.     <TD style=3D"text-align: center;"> No </TD>

    2686. 

  2686.     <TD style=3D"text-align: center;"> No </TD>

    2687. 

  2687.     <TD style=3D"text-align: center;"> No </TD>

    2688. 

  2688.     <TD style=3D"text-align: center;"> No </TD>

    2689. 

  2689.     <TD style=3D"text-align: center;"> No </TD>

    2690. 

  2690.     <TD style=3D"text-align: center;"> No </TD>

    2691. 

  2691.     <TD style=3D"text-align: center;"> No </TD>

    2692. 

  2692.     <TD style=3D"background: rgb(136, 255, 136); text-align: center;"> =

    2693. 

  2693. Yes</TD></TR>

    2694. 

  2694.   <TR style=3D"background: orange;">

    2695. 

  2695.     <TD> 61 </TD>

    2696. 

  2696.     <TD> NAT Traversal </TD>

    2697. 

  2697.     <TD style=3D"text-align: center;"> No </TD>

    2698. 

  2698.     <TD style=3D"text-align: center;">&nbsp;? </TD>

    2699. 

  2699.     <TD style=3D"background: rgb(136, 255, 136); text-align: center;"> =

    2700. 

  2700. Yes </TD>

    2701. 

  2701.     <TD style=3D"text-align: center;">&nbsp;? </TD>

    2702. 

  2702.     <TD style=3D"text-align: center;">&nbsp;? </TD>

    2703. 

  2703.     <TD style=3D"text-align: center;"> No </TD>

    2704. 

  2704.     <TD style=3D"text-align: center;">&nbsp;? </TD>

    2705. 

  2705.     <TD style=3D"text-align: center;">&nbsp;? </TD>

    2706. 

  2706.     <TD style=3D"text-align: center;"> No </TD>

    2707. 

  2707.     <TD style=3D"text-align: center;">&nbsp;?</TD></TR>

    2708. 

  2708.   <TR>

    2709. 

  2709.     <TD> 62 </TD>

    2710. 

  2710.     <TD> Fast Peers </TD>

    2711. 

  2711.     <TD style=3D"text-align: center;"> No </TD>

    2712. 

  2712.     <TD style=3D"text-align: center;">&nbsp;? </TD>

    2713. 

  2713.     <TD style=3D"background: rgb(136, 255, 136); text-align: center;"> =

    2714. 

  2714. Yes </TD>

    2715. 

  2715.     <TD style=3D"background: rgb(136, 255, 136); text-align: center;"> =

    2716. 

  2716. Yes </TD>

    2717. 

  2717.     <TD style=3D"text-align: center;">&nbsp;? </TD>

    2718. 

  2718.     <TD style=3D"background: rgb(136, 255, 136); text-align: center;"> =

    2719. 

  2719. Yes </TD>

    2720. 

  2720.     <TD style=3D"background: rgb(136, 255, 136); text-align: center;"> =

    2721. 

  2721. Yes </TD>

    2722. 

  2722.     <TD style=3D"text-align: center;"> No </TD>

    2723. 

  2723.     <TD style=3D"text-align: center;"> No </TD>

    2724. 

  2724.     <TD style=3D"text-align: center;">&nbsp;?</TD></TR>

    2725. 

  2725.   <TR style=3D"background: orange;">

    2726. 

  2726.     <TD> 63 </TD>

    2727. 

  2727.     <TD> XBT Peer Exchange </TD>

    2728. 

  2728.     <TD style=3D"text-align: center;"> No </TD>

    2729. 

  2729.     <TD style=3D"text-align: center;">&nbsp;? </TD>

    2730. 

  2730.     <TD style=3D"text-align: center;"> No </TD>

    2731. 

  2731.     <TD style=3D"text-align: center;">&nbsp;? </TD>

    2732. 

  2732.     <TD style=3D"text-align: center;">&nbsp;? </TD>

    2733. 

  2733.     <TD style=3D"text-align: center;"> No </TD>

    2734. 

  2734.     <TD style=3D"text-align: center;">&nbsp;? </TD>

    2735. 

  2735.     <TD style=3D"text-align: center;">&nbsp;? </TD>

    2736. 

  2736.     <TD style=3D"background: rgb(136, 255, 136); text-align: center;"> =

    2737. 

  2737. Yes </TD>

    2738. 

  2738.     <TD style=3D"text-align: center;">&nbsp;?</TD></TR>

    2739. 

  2739.   <TR>

    2740. 

  2740.     <TD> 64 </TD>

    2741. 

  2741.     <TD> DHT </TD>

    2742. 

  2742.     <TD style=3D"text-align: center;"> No </TD>

    2743. 

  2743.     <TD style=3D"background: rgb(136, 255, 136); text-align: center;"> =

    2744. 

  2744. Yes </TD>

    2745. 

  2745.     <TD style=3D"background: rgb(136, 255, 136); text-align: center;"> =

    2746. 

  2746. Yes </TD>

    2747. 

  2747.     <TD style=3D"background: rgb(136, 255, 136); text-align: center;"> =

    2748. 

  2748. Yes </TD>

    2749. 

  2749.     <TD style=3D"background: rgb(136, 255, 136); text-align: center;"> =

    2750. 

  2750. Yes </TD>

    2751. 

  2751.     <TD style=3D"background: rgb(136, 255, 136); text-align: center;"> =

    2752. 

  2752. Yes </TD>

    2753. 

  2753.     <TD style=3D"background: rgb(136, 255, 136); text-align: center;"> =

    2754. 

  2754. Yes </TD>

    2755. 

  2755.     <TD style=3D"text-align: center;"> No </TD>

    2756. 

  2756.     <TD style=3D"text-align: center;"> No </TD>

    2757. 

  2757.     <TD style=3D"text-align: center;">&nbsp;?</TD></TR>

    2758. 

  2758.   <TR style=3D"background: orange;">

    2759. 

  2759.     <TD> 64 </TD>

    2760. 

  2760.     <TD> XBT Metadata Exchange </TD>

    2761. 

  2761.     <TD style=3D"text-align: center;"> No </TD>

    2762. 

  2762.     <TD style=3D"text-align: center;">&nbsp;? </TD>

    2763. 

  2763.     <TD style=3D"text-align: center;"> No </TD>

    2764. 

  2764.     <TD style=3D"text-align: center;">&nbsp;? </TD>

    2765. 

  2765.     <TD style=3D"text-align: center;">&nbsp;? </TD>

    2766. 

  2766.     <TD style=3D"text-align: center;"> No </TD>

    2767. 

  2767.     <TD style=3D"text-align: center;">&nbsp;? </TD>

    2768. 

  2768.     <TD style=3D"text-align: center;">&nbsp;? </TD>

    2769. 

  2769.     <TD style=3D"background: rgb(136, 255, 136); text-align: center;"> =

    2770. 

  2770. Yes </TD>

    2771. 

  2771.     <TD style=3D"text-align: center;">&nbsp;?</TD></TR></TBODY></TABLE>

    2772. 

  2772. <H2> <SPAN id=3D"Change_Log" class=3D"mw-headline"> Change Log =

    2773. 

  2773. </SPAN></H2>

    2774. 

  2774. <P>Put your changes below this line, so that the most recent changes =

    2775. 

  2775. appear=20

    2776. 

  2776. first.  The change log should be purged from time to time.  Please =

    2777. 

  2777. preserve the=20

    2778. 

  2778. last month's worth of change logs.</P>

    2779. 

  2779. <P>doverosx - 2011-05-30 - minor: changed in notations "a block is a =

    2780. 

  2780. portion of=20

    2781. 

  2781. data that the client requests from AT LEAST ONE peer" since it is not =

    2782. 

  2782. necessary=20

    2783. 

  2783. to request a block from only ONE peer at a time.</P>

    2784. 

  2784. <P><A class=3D"new" title=3D"SuprDewd (page does not exist)" =

    2785. 

  2785. href=3D"http://wiki.theory.org/index.php?title=3DSuprDewd&amp;action=3Ded=

    2786. 

  2786. it&amp;redlink=3D1">SuprDewd</A>=20

    2787. 

  2787. - 2010-07-23 - Added a link to my implementation of bencoding for =

    2788. 

  2788. C#.</P>

    2789. 

  2789. <P>greywiz - 2010-01-01 - Added support for Extension Protocol and DHT =

    2790. 

  2790. for=20

    2791. 

  2791. BitComet in the Reserved Bytes table</P>

    2792. 

  2792. <P>SiDi - 2009-04-18 - Added RezTorrent peer_id</P>

    2793. 

  2793. <P>HighInBC - 2008-02-12 - Minor change. Added parsed result for final =

    2794. 

  2794. example=20

    2795. 

  2795. of bencoded dictionary, added &lt;nowiki&gt; tags to top example to =

    2796. 

  2796. avoid=20

    2797. 

  2797. issues.</P>

    2798. 

  2798. <P>amc1 - 2007-09-12 - Azureus now supports the LibTorrent Extension =

    2799. 

  2799. Protocol=20

    2800. 

  2800. (LTEP, as I refer to it).</P>

    2801. 

  2801. <P>amc1 - 2007-08-16 - Added description and links to Extension =

    2802. 

  2802. Negotiation=20

    2803. 

  2803. Protocol, and formatted the reserved bits table a bit.</P>

    2804. 

  2804. <P>Denial - 2007-08-13 - Added description of the SimpleBT and BitComet=20

    2805. 

  2805. extension protocols</P>

    2806. 

  2806. <P>amc1 - 2007-07-16 - Added SymTorrent's peer ID identifier, as well as =

    2807. 

  2807. some=20

    2808. 

  2808. other clients I've come across which need to be identified.</P>

    2809. 

  2809. <P>amc1 - 2007-07-14 - Corrected information about Shadow's style of =

    2810. 

  2810. peer ID -=20

    2811. 

  2811. existing text made incorrect assumptions.</P>

    2812. 

  2812. <P>mitchman - 2007-07-12 - Clarified the Opera peed-id</P>

    2813. 

  2813. <P>roee88- 2007-06-11 - Added LH-ABC peer_id</P>

    2814. 

  2814. <P>Boian V Petkantchin - April 26, 2007. Listed another unoffcial =

    2815. 

  2815. extension -=20

    2816. 

  2816. BitTorrent Location-aware Protocol 1.0. Included it in the table of =

    2817. 

  2817. reserved=20

    2818. 

  2818. bits.</P>

    2819. 

  2819. <P>daniel-gl at gmx.net - Corrected reserved bit numbers - Added NAT =

    2820. 

  2820. traversal=20

    2821. 

  2821. and XBT extensions to table</P>

    2822. 

  2822. <P>stuge - 2006-11-20 - Added Queen Bee peer_id</P>

    2823. 

  2823. <P><A class=3D"mw-redirect" title=3D"EHeM"=20

    2824. 

  2824. href=3D"http://wiki.theory.org/EHeM">EHeM</A> - 2006-10-16 - Update of =

    2825. 

  2825. view #1 on=20

    2826. 

  2826. <I>Message: request</I> to hopefully reflect a possible compromise =

    2827. 

  2827. position. -=20

    2828. 

  2828. Trimming of changelog.</P>

    2829. 

  2829. <P><A class=3D"mw-redirect" title=3D"EHeM"=20

    2830. 

  2830. href=3D"http://wiki.theory.org/EHeM">EHeM</A> - 2006-10-11 - Firmly =

    2831. 

  2831. marked the=20

    2832. 

  2832. <I>Message: request</I> section as being under dispute - Firmly marked =

    2833. 

  2833. the=20

    2834. 

  2834. <I>Algorithms: Queuing</I> section as being under dispute - Removed =

    2835. 

  2835. personal=20

    2836. 

  2836. insults by uau, could we be reasonable humans and try to resolve =

    2837. 

  2837. disputes=20

    2838. 

  2838. peacefully? Perhaps using the attached <A class=3D"external text" =

    2839. 

  2839. href=3D"http://wiki.theory.org/Talk:BitTorrentSpecification"=20

    2840. 

  2840. rel=3D"nofollow">talk/discussion</A> page?</P>

    2841. 

  2841. <P>Joris Guisson - 2006-09-12 - Added KTorrent specific information =

    2842. 

  2842. (peer id and=20

    2843. 

  2843. extension table)</P>

    2844. 

  2844. <P>Arvid - 2006-09-12 - Added Extension protocol to the unofficial =

    2845. 

  2845. extensions=20

    2846. 

  2846. section</P>

    2847. 

  2847. <P>Alan - 2006-09-12 -Removed some older history. Update the reserved =

    2848. 

  2848. bytes=20

    2849. 

  2849. section.</P>

    2850. 

  2850. <P>Alan - 2006-09-11 - Added section about Extensions to Protocol</P>

    2851. 

  2851. <P>uau - 2006-08-17 - Added warning about the misleading information in =

    2852. 

  2852. the=20

    2853. 

  2853. Queuing and requests packet sections.</P>

    2854. 

  2854. <P><A class=3D"new" title=3D"WikiWordsAreEllFourEmmThree (page does not =

    2855. 

  2855. exist)"=20

    2856. 

  2856. href=3D"http://wiki.theory.org/index.php?title=3DWikiWordsAreEllFourEmmTh=

    2857. 

  2857. ree&amp;action=3Dedit&amp;redlink=3D1">WikiWordsAreEllFourEmmThree</A>=20

    2858. 

  2858. - 2006-07-08- Added <A class=3D"new" title=3D"BitPump (page does not =

    2859. 

  2859. exist)" =

    2860. 

  2860. href=3D"http://wiki.theory.org/index.php?title=3DBitPump&amp;action=3Dedi=

    2861. 

  2861. t&amp;redlink=3D1">BitPump</A>=20

    2862. 

  2862. peer_id</P>

    2863. 

  2863. <P>daniel-gl at gmx.net - 2006-04-28- Added Bits on Wheels &amp; <A =

    2864. 

  2864. class=3D"new"=20

    2865. 

  2865. title=3D"BitLord (page does not exist)" =

    2866. 

  2866. href=3D"http://wiki.theory.org/index.php?title=3DBitLord&amp;action=3Dedi=

    2867. 

  2867. t&amp;redlink=3D1">BitLord</A>=20

    2868. 

  2868. peer_id.</P>

    2869. 

  2869. <P><A class=3D"new" title=3D"DennisHolmes (page does not exist)" =

    2870. 

  2870. href=3D"http://wiki.theory.org/index.php?title=3DDennisHolmes&amp;action=3D=

    2871. 

  2871. edit&amp;redlink=3D1">DennisHolmes</A>=20

    2872. 

  2872. - 2006-04-22- Added Enhanced CTorrent peer_id</P>

    2873. 

  2873. <P><A class=3D"new" title=3D"WikiWordsAre (page does not exist)" =

    2874. 

  2874. href=3D"http://wiki.theory.org/index.php?title=3DWikiWordsAre&amp;action=3D=

    2875. 

  2875. edit&amp;redlink=3D1">WikiWordsAre</A>=EF=BF=BDberGay=20

    2876. 

  2876. - 2006-04-16- Anti-snubbing '<I>is</I> part of the official protocol. =

    2877. 

  2877. Check out=20

    2878. 

  2878. the paper on <A class=3D"new" title=3D"BitTorrent (page does not exist)" =

    2879. 

  2879. href=3D"http://wiki.theory.org/index.php?title=3DBitTorrent&amp;action=3D=

    2880. 

  2880. edit&amp;redlink=3D1">BitTorrent</A>=20

    2881. 

  2881. economics at <A class=3D"external free" =

    2882. 

  2882. href=3D"http://www.bittorrent.org/" =

    2883. 

  2883. rel=3D"nofollow">http://www.bittorrent.org/</A>

    2884. 

  2884. </P>

    2885. 

  2885. <P><A class=3D"new" title=3D"JoshElsasser (page does not exist)" =

    2886. 

  2886. href=3D"http://wiki.theory.org/index.php?title=3DJoshElsasser&amp;action=3D=

    2887. 

  2887. edit&amp;redlink=3D1">JoshElsasser</A>=20

    2888. 

  2888. - 2006-04-11- Added Transmission peer_id</P>

    2889. 

  2889. <P>daniel-gl at gmx.net - 2006-03-23- Added Tribler peer_id</P>

    2890. 

  2890. <P><A class=3D"new" title=3D"MaSiniavine (page does not exist)" =

    2891. 

  2891. href=3D"http://wiki.theory.org/index.php?title=3DMaSiniavine&amp;action=3D=

    2892. 

  2892. edit&amp;redlink=3D1">MaSiniavine</A>

    2893. 

  2893. - Corrected dictionary example</P>

    2894. 

  2894. <P>Juanjo 2006-03-10- Added Lphant peer ID</P>

    2895. 

  2895. <P><A class=3D"mw-redirect" title=3D"EHeM"=20

    2896. 

  2896. href=3D"http://wiki.theory.org/EHeM">EHeM</A> 2006-03-07- Added mention =

    2897. 

  2897. of another=20

    2898. 

  2898. parameter to the baseline for queuing.- Another link adjustment.- Added=20

    2899. 

  2899. exposition on request block size.- Sample link changes, the domain =

    2900. 

  2900. "example.com"=20

    2901. 

  2901. is explicitly reserved for examples, as such that should be used instead =

    2902. 

  2902. of=20

    2903. 

  2903. spam.com.- Added qualification to recommended number of peers.</P>

    2904. 

  2904. <P><A class=3D"mw-redirect" title=3D"EHeM"=20

    2905. 

  2905. href=3D"http://wiki.theory.org/EHeM">EHeM</A> 2006-03-01 (minor)- Link =

    2906. 

  2906. changes,=20

    2907. 

  2907. the official <A class=3D"new" title=3D"BitTorrent (page does not exist)" =

    2908. 

  2908. href=3D"http://wiki.theory.org/index.php?title=3DBitTorrent&amp;action=3D=

    2909. 

  2909. edit&amp;redlink=3D1">BitTorrent</A>=20

    2910. 

  2910. pages are no longer on bitconjurer.org, but bittorent.com.- Removed =

    2911. 

  2911. unneeded=20

    2912. 

  2912. line breaks from paragraph.- Typo fixes in changelog (yeah, I suppose do =

    2913. 

  2913. have a=20

    2914. 

  2914. bit of vanity)</P>

    2915. 

  2915. <P><A class=3D"mw-redirect" title=3D"EHeM"=20

    2916. 

  2916. href=3D"http://wiki.theory.org/EHeM">EHeM</A> 2006-03-01- Restored the =

    2917. 

  2917. section on=20

    2918. 

  2918. queueing, as it '<I>is</I> a highly crucial performance item. Feel free =

    2919. 

  2919. to=20

    2920. 

  2920. rewrite me if you desire, uau. The developer's list, <A =

    2921. 

  2921. class=3D"external free"=20

    2922. 

  2922. href=3D"http://lists.ibiblio.org/mailman/listinfo/bittorrent"=20

    2923. 

  2923. rel=3D"nofollow">http://lists.ibiblio.org/mailman/listinfo/bittorrent</A>=

    2924. 

  2924.  is a=20

    2925. 

  2925. better place for debates.- Trimmed changelog entries older than one =

    2926. 

  2926. year, the=20

    2927. 

  2927. above specifies one month, but this is changing slowly so more history =

    2928. 

  2928. seems=20

    2929. 

  2929. pertinent.</P>

    2930. 

  2930. <P>haylegend - 2006-01-08- Added Retriever's peer id.</P>

    2931. 

  2931. <P>uau - 2005-12-13- Fixed sizes in request message description AGAIN. =

    2932. 

  2932. They had=20

    2933. 

  2933. been changed to incorrect values.- Removed "Queuing" section. It had so =

    2934. 

  2934. many=20

    2935. 

  2935. errors and inaccuracies that it did more harm than good as it was, and I =

    2936. 

  2936. didn't=20

    2937. 

  2937. feel like rewriting it.</P>

    2938. 

  2938. <HR>

    2939. 

  2939. <PRE>Last edit: Tue, 12 Sep 2006 22:38:05 -0700=0A=

    2940. 

  2940. (TresNi)=0A=

    2941. 

  2941. Revisions: 158=0A=

    2942. 

  2942. </PRE>

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    3373. 

  3373. }

    3374. 

  3374. .mw-search-formheader div.search-types ul li {

    3375. 

  3375. 	margin: 0px; padding: 0px; float: left;

    3376. 

  3376. }

    3377. 

  3377. .mw-search-formheader div.search-types ul li a {

    3378. 

  3378. 	padding: 0.5em; display: block;

    3379. 

  3379. }

    3380. 

  3380. .mw-search-formheader div.search-types ul li.current a {

    3381. 

  3381. 	color: rgb(51, 51, 51); cursor: default;

    3382. 

  3382. }

    3383. 

  3383. .mw-search-formheader div.search-types ul li.current a:hover {

    3384. 

  3384. 	text-decoration: none;

    3385. 

  3385. }

    3386. 

  3386. .mw-search-formheader div.results-info {

    3387. 

  3387. 	padding: 0.5em 0.75em 0.5em 0.5em; float: right;

    3388. 

  3388. }

    3389. 

  3389. .mw-search-formheader div.results-info ul {

    3390. 

  3390. 	list-style: none !important; margin: 0px !important; padding: 0px =

    3391. 

  3391. !important;

    3392. 

  3392. }

    3393. 

  3393. .mw-search-formheader div.results-info ul li {

    3394. 

  3394. 	margin: 0px; padding: 0px; float: right;

    3395. 

  3395. }

    3396. 

  3396. fieldset#mw-searchoptions {

    3397. 

  3397. 	border-width: 0px 1px 1px !important; border-style: solid !important; =

    3398. 

  3398. border-color: silver !important; margin: 0px; padding: 0.5em 0.75em =

    3399. 

  3399. !important; background-color: rgb(249, 249, 249);

    3400. 

  3400. }

    3401. 

  3401. fieldset#mw-searchoptions legend {

    3402. 

  3402. 	display: none;

    3403. 

  3403. }

    3404. 

  3404. fieldset#mw-searchoptions h4 {

    3405. 

  3405. 	margin: 0px; padding: 0px; float: left;

    3406. 

  3406. }

    3407. 

  3407. .rtl fieldset#mw-searchoptions h4 {

    3408. 

  3408. 	float: right;

    3409. 

  3409. }

    3410. 

  3410. fieldset#mw-searchoptions div#mw-search-togglebox {

    3411. 

  3411. 	float: right;

    3412. 

  3412. }

    3413. 

  3413. .rtl fieldset#mw-searchoptions div#mw-search-togglebox {

    3414. 

  3414. 	float: left;

    3415. 

  3415. }

    3416. 

  3416. fieldset#mw-searchoptions div#mw-search-togglebox label {

    3417. 

  3417. 	margin-right: 0.25em;

    3418. 

  3418. }

    3419. 

  3419. fieldset#mw-searchoptions div#mw-search-togglebox input {

    3420. 

  3420. 	margin-left: 0.25em;

    3421. 

  3421. }

    3422. 

  3422. fieldset#mw-searchoptions table {

    3423. 

  3423. 	margin-right: 3em; float: left;

    3424. 

  3424. }

    3425. 

  3425. fieldset#mw-searchoptions table td {

    3426. 

  3426. 	padding-right: 1em;

    3427. 

  3427. }

    3428. 

  3428. .rtl fieldset#mw-searchoptions table td {

    3429. 

  3429. 	padding-right: 0px; padding-left: 1em;

    3430. 

  3430. }

    3431. 

  3431. body.rtl fieldset#mw-searchoptions table {

    3432. 

  3432. 	margin-right: 0px; margin-left: 3em; float: right;

    3433. 

  3433. }

    3434. 

  3434. fieldset#mw-searchoptions div.divider {

    3435. 

  3435. 	padding-top: 0.5em; clear: both; margin-bottom: 0.5em; =

    3436. 

  3436. border-bottom-color: rgb(221, 221, 221); border-bottom-width: 1px; =

    3437. 

  3437. border-bottom-style: solid;

    3438. 

  3438. }

    3439. 

  3439. td#mw-search-menu {

    3440. 

  3440. 	padding-left: 6em; font-size: 85%;

    3441. 

  3441. }

    3442. 

  3442. div#mw-search-interwiki {

    3443. 

  3443. 	border: 1px solid rgb(170, 170, 170); width: 18em; margin-top: 2ex; =

    3444. 

  3444. float: right;

    3445. 

  3445. }

    3446. 

  3446. .rtl div#mw-search-interwiki {

    3447. 

  3447. 	float: left;

    3448. 

  3448. }

    3449. 

  3449. div#mw-search-interwiki li {

    3450. 

  3450. 	font-size: 95%;

    3451. 

  3451. }

    3452. 

  3452. .mw-search-interwiki-more {

    3453. 

  3453. 	font-size: 90%; float: right;

    3454. 

  3454. }

    3455. 

  3455. .rtl .mw-search-interwiki-more {

    3456. 

  3456. 	float: left;

    3457. 

  3457. }

    3458. 

  3458. div#mw-search-interwiki-caption {

    3459. 

  3459. 	text-align: center; font-size: 95%; font-weight: bold;

    3460. 

  3460. }

    3461. 

  3461. .mw-search-interwiki-project {

    3462. 

  3462. 	padding: 0.15em 0.15em 0.2em 0.2em; text-align: left; font-size: 97%; =

    3463. 

  3463. border-top-color: rgb(187, 187, 187); border-top-width: 1px; =

    3464. 

  3464. border-top-style: solid; background-color: rgb(236, 236, 236);

    3465. 

  3465. }

    3466. 

  3466. .rtl .mw-search-interwiki-project {

    3467. 

  3467. 	text-align: right;

    3468. 

  3468. }

    3469. 

  3469. span.searchalttitle {

    3470. 

  3470. 	font-size: 95%;

    3471. 

  3471. }

    3472. 

  3472. div.searchdidyoumean {

    3473. 

  3473. 	color: rgb(204, 0, 0); font-size: 127%; margin-top: 0.8em;

    3474. 

  3474. }

    3475. 

  3475. div.searchdidyoumean em {

    3476. 

  3476. 	font-weight: bold;

    3477. 

  3477. }

    3478. 

  3478. .searchmatch {

    3479. 

  3479. 	font-weight: bold;

    3480. 

  3480. }

    3481. 

  3481. table#mw-search-top-table {

    3482. 

  3482. 	background-color: transparent;

    3483. 

  3483. }

    3484. 

  3484. td#mw-search-togglebox {

    3485. 

  3485. 	text-align: right;

    3486. 

  3486. }

    3487. 

  3487. table#mw-search-powertable {

    3488. 

  3488. 	width: 100%;

    3489. 

  3489. }

    3490. 

  3490. form#powersearch {

    3491. 

  3491. 	clear: both;

    3492. 

  3492. }

    3493. 

  3493. .mw-userrights-disabled {

    3494. 

  3494. 	color: rgb(136, 136, 136);

    3495. 

  3495. }

    3496. 

  3496. table.mw-userrights-groups * td {

    3497. 

  3497. 	padding-right: 1.5em;

    3498. 

  3498. }

    3499. 

  3499. table.mw-userrights-groups * th {

    3500. 

  3500. 	padding-right: 1.5em;

    3501. 

  3501. }

    3502. 

  3502. .os-suggest {

    3503. 

  3503. 	border: 1px solid rgb(170, 170, 170); left: 0px; top: 0px; width: 0px; =

    3504. 

  3504. overflow: auto; font-size: 95%; position: absolute; z-index: 99; =

    3505. 

  3505. overflow-x: hidden; background-color: window;

    3506. 

  3506. }

    3507. 

  3507. table.os-suggest-results {

    3508. 

  3508. 	border: 0px currentColor; width: 100%; font-size: 95%; border-collapse: =

    3509. 

  3509. collapse; cursor: pointer;

    3510. 

  3510. }

    3511. 

  3511. .os-suggest-result {

    3512. 

  3512. 	padding: 2px; color: windowtext; white-space: nowrap; background-color: =

    3513. 

  3513. window;

    3514. 

  3514. }

    3515. 

  3515. .os-suggest-result-hl {

    3516. 

  3516. 	padding: 2px; color: windowtext; white-space: nowrap; background-color: =

    3517. 

  3517. window;

    3518. 

  3518. }

    3519. 

  3519. .os-suggest-result-hl {

    3520. 

  3520. 	color: white; background-color: rgb(76, 89, 166);

    3521. 

  3521. }

    3522. 

  3522. .os-suggest-result-hl-webkit {

    3523. 

  3523. 	color: white; background-color: rgb(76, 89, 166);

    3524. 

  3524. }

    3525. 

  3525. .os-suggest-result-hl {

    3526. 

  3526. 	color: highlighttext; background-color: highlight;

    3527. 

  3527. }

    3528. 

  3528. .os-suggest-toggle {

    3529. 

  3529. 	left: 1ex; font-size: 65%; position: relative;

    3530. 

  3530. }

    3531. 

  3531. .os-suggest-toggle-def {

    3532. 

  3532. 	left: 0px; top: 0px; font-size: 65%; visibility: hidden; position: =

    3533. 

  3533. absolute;

    3534. 

  3534. }

    3535. 

  3535. .autocomment {

    3536. 

  3536. 	color: gray;

    3537. 

  3537. }

    3538. 

  3538. #pagehistory .history-user {

    3539. 

  3539. 	margin-right: 0.2em; margin-left: 0.4em;

    3540. 

  3540. }

    3541. 

  3541. #pagehistory span.minor {

    3542. 

  3542. 	font-weight: bold;

    3543. 

  3543. }

    3544. 

  3544. #pagehistory li {

    3545. 

  3545. 	border: 1px solid white;

    3546. 

  3546. }

    3547. 

  3547. #pagehistory li.selected {

    3548. 

  3548. 	border: 1px dashed rgb(170, 170, 170); background-color: rgb(249, 249, =

    3549. 

  3549. 249);

    3550. 

  3550. }

    3551. 

  3551. .newpage {

    3552. 

  3552. 	font-weight: bold;

    3553. 

  3553. }

    3554. 

  3554. .minor {

    3555. 

  3555. 	font-weight: bold;

    3556. 

  3556. }

    3557. 

  3557. .bot {

    3558. 

  3558. 	font-weight: bold;

    3559. 

  3559. }

    3560. 

  3560. .mw-uctop {

    3561. 

  3561. 	font-weight: bold;

    3562. 

  3562. }

    3563. 

  3563. table.mw-listgrouprights-table tr {

    3564. 

  3564. 	vertical-align: top;

    3565. 

  3565. }

    3566. 

  3566. .listgrouprights-revoked {

    3567. 

  3567. 	text-decoration: line-through;

    3568. 

  3568. }

    3569. 

  3569. td.mw-statistics-numbers {

    3570. 

  3570. 	text-align: right;

    3571. 

  3571. }

    3572. 

  3572. h4.mw-specialpagesgroup {

    3573. 

  3573. 	margin: 0.3em 0em 0em; padding: 2px; background-color: rgb(220, 220, =

    3574. 

  3574. 220);

    3575. 

  3575. }

    3576. 

  3576. .mw-specialpagerestricted {

    3577. 

  3577. 	font-weight: bold;

    3578. 

  3578. }

    3579. 

  3579. #shared-image-dup {

    3580. 

  3580. 	font-style: italic;

    3581. 

  3581. }

    3582. 

  3582. #shared-image-conflict {

    3583. 

  3583. 	font-style: italic;

    3584. 

  3584. }

    3585. 

  3585. table.mw-emailuser-table {

    3586. 

  3586. 	width: 98%;

    3587. 

  3587. }

    3588. 

  3588. td#mw-emailuser-sender {

    3589. 

  3589. 	font-weight: bold;

    3590. 

  3590. }

    3591. 

  3591. td#mw-emailuser-recipient {

    3592. 

  3592. 	font-weight: bold;

    3593. 

  3593. }

    3594. 

  3594. table.allpageslist {

    3595. 

  3595. 	background-color: transparent;

    3596. 

  3596. }

    3597. 

  3597. table.mw-allpages-table-form {

    3598. 

  3598. 	width: 100%; background-color: transparent;

    3599. 

  3599. }

    3600. 

  3600. table.mw-allpages-table-chunk {

    3601. 

  3601. 	width: 100%; background-color: transparent;

    3602. 

  3602. }

    3603. 

  3603. td.mw-allpages-alphaindexline {

    3604. 

  3604. 	text-align: right;

    3605. 

  3605. }

    3606. 

  3606. td.mw-allpages-nav {

    3607. 

  3607. 	text-align: right; font-size: smaller; margin-bottom: 1em;

    3608. 

  3608. }

    3609. 

  3609. p.mw-allpages-nav {

    3610. 

  3610. 	text-align: right; font-size: smaller; margin-bottom: 1em;

    3611. 

  3611. }

    3612. 

  3612. table.mw-allpages-table-form tr {

    3613. 

  3613. 	vertical-align: top;

    3614. 

  3614. }

    3615. 

  3615. table#mw-prefixindex-list-table {

    3616. 

  3616. 	width: 98%; background-color: transparent;

    3617. 

  3617. }

    3618. 

  3618. table#mw-prefixindex-nav-table {

    3619. 

  3619. 	width: 98%; background-color: transparent;

    3620. 

  3620. }

    3621. 

  3621. td#mw-prefixindex-nav-form {

    3622. 

  3622. 	text-align: right; font-size: smaller; margin-bottom: 1em; =

    3623. 

  3623. vertical-align: top;

    3624. 

  3624. }

    3625. 

  3625. div.mw-warning-with-logexcerpt {

    3626. 

  3626. 	padding: 3px; border: 2px solid rgb(47, 111, 171); clear: both; =

    3627. 

  3627. margin-bottom: 3px;

    3628. 

  3628. }

    3629. 

  3629. div.mw-warning-with-logexcerpt ul li {

    3630. 

  3630. 	font-size: 90%;

    3631. 

  3631. }

    3632. 

  3632. span.mw-revdelundel-link {

    3633. 

  3633. 	font-size: 90%;

    3634. 

  3634. }

    3635. 

  3635. strong.mw-revdelundel-link {

    3636. 

  3636. 	font-size: 90%;

    3637. 

  3637. }

    3638. 

  3638. span.mw-revdelundel-hidden {

    3639. 

  3639. 	visibility: hidden;

    3640. 

  3640. }

    3641. 

  3641. input.mw-revdelundel-hidden {

    3642. 

  3642. 	visibility: hidden;

    3643. 

  3643. }

    3644. 

  3644. td.mw-revdel-checkbox {

    3645. 

  3645. 	text-align: center; padding-right: 10px;

    3646. 

  3646. }

    3647. 

  3647. th.mw-revdel-checkbox {

    3648. 

  3648. 	text-align: center; padding-right: 10px;

    3649. 

  3649. }

    3650. 

  3650. a.feedlink {

    3651. 

  3651. 	background: url("images/feed-icon.png") no-repeat left; padding-left: =

    3652. 

  3652. 16px;

    3653. 

  3653. }

    3654. 

  3654. .plainlinks a {

    3655. 

  3655. 	padding: 0px !important;

    3656. 

  3656. }

    3657. 

  3657. table.wikitable {

    3658. 

  3658. 	background: rgb(249, 249, 249); margin: 1em 1em 1em 0px; border: 1px =

    3659. 

  3659. solid rgb(170, 170, 170); border-collapse: collapse;

    3660. 

  3660. }

    3661. 

  3661. .wikitable th {

    3662. 

  3662. 	padding: 0.2em; border: 1px solid rgb(170, 170, 170);

    3663. 

  3663. }

    3664. 

  3664. .wikitable td {

    3665. 

  3665. 	padding: 0.2em; border: 1px solid rgb(170, 170, 170);

    3666. 

  3666. }

    3667. 

  3667. .wikitable th {

    3668. 

  3668. 	background: rgb(242, 242, 242); text-align: center;

    3669. 

  3669. }

    3670. 

  3670. .wikitable caption {

    3671. 

  3671. 	font-weight: bold;

    3672. 

  3672. }

    3673. 

  3673. table.collapsed tr.collapsable {

    3674. 

  3674. 	display: none;

    3675. 

  3675. }

    3676. 

  3676. .success {

    3677. 

  3677. 	color: green; font-size: larger;

    3678. 

  3678. }

    3679. 

  3679. .error {

    3680. 

  3680. 	color: red; font-size: larger;

    3681. 

  3681. }

    3682. 

  3682. .errorbox {

    3683. 

  3683. 	padding: 0.5em 1em; border: 2px solid currentColor; color: rgb(0, 0, =

    3684. 

  3684. 0); font-size: larger; margin-bottom: 2em; float: left;

    3685. 

  3685. }

    3686. 

  3686. .successbox {

    3687. 

  3687. 	padding: 0.5em 1em; border: 2px solid currentColor; color: rgb(0, 0, =

    3688. 

  3688. 0); font-size: larger; margin-bottom: 2em; float: left;

    3689. 

  3689. }

    3690. 

  3690. .errorbox {

    3691. 

  3691. 	border-color: red; background-color: rgb(255, 242, 242);

    3692. 

  3692. }

    3693. 

  3693. .successbox {

    3694. 

  3694. 	border-color: green; background-color: rgb(221, 255, 221);

    3695. 

  3695. }

    3696. 

  3696. .errorbox h2 {

    3697. 

  3697. 	margin: 0px 0.5em 0px 0px; border: currentColor; font-size: 1em; =

    3698. 

  3698. font-weight: bold; display: inline;

    3699. 

  3699. }

    3700. 

  3700. .successbox h2 {

    3701. 

  3701. 	margin: 0px 0.5em 0px 0px; border: currentColor; font-size: 1em; =

    3702. 

  3702. font-weight: bold; display: inline;

    3703. 

  3703. }

    3704. 

  3704. .visualClear {

    3705. 

  3705. 	clear: both;

    3706. 

  3706. }

    3707. 

  3707. #mw_trackbacks {

    3708. 

  3708. 	padding: 0.2em; border: 1px solid rgb(187, 187, 255); background-color: =

    3709. 

  3709. rgb(238, 238, 255);

    3710. 

  3710. }

    3711. 

  3711. .TablePager {

    3712. 

  3712. 	min-width: 80%;

    3713. 

  3713. }

    3714. 

  3714. .TablePager_nav a {

    3715. 

  3715. 	text-decoration: none;

    3716. 

  3716. }

    3717. 

  3717. .TablePager {

    3718. 

  3718. 	border-collapse: collapse;

    3719. 

  3719. }

    3720. 

  3720. .TablePager {

    3721. 

  3721. 	padding: 0px 0.15em; border: 1px solid rgb(170, 170, 170);

    3722. 

  3722. }

    3723. 

  3723. .TablePager td {

    3724. 

  3724. 	padding: 0px 0.15em; border: 1px solid rgb(170, 170, 170);

    3725. 

  3725. }

    3726. 

  3726. .TablePager th {

    3727. 

  3727. 	padding: 0px 0.15em; border: 1px solid rgb(170, 170, 170);

    3728. 

  3728. }

    3729. 

  3729. .TablePager th {

    3730. 

  3730. 	background-color: rgb(238, 238, 255);

    3731. 

  3731. }

    3732. 

  3732. .TablePager td {

    3733. 

  3733. 	background-color: rgb(255, 255, 255);

    3734. 

  3734. }

    3735. 

  3735. .TablePager tr:hover td {

    3736. 

  3736. 	background-color: rgb(238, 238, 255);

    3737. 

  3737. }

    3738. 

  3738. .imagelist td {

    3739. 

  3739. 	white-space: nowrap;

    3740. 

  3740. }

    3741. 

  3741. .imagelist th {

    3742. 

  3742. 	white-space: nowrap;

    3743. 

  3743. }

    3744. 

  3744. .imagelist .TablePager_col_links {

    3745. 

  3745. 	background-color: rgb(238, 238, 255);

    3746. 

  3746. }

    3747. 

  3747. .imagelist .TablePager_col_img_description {

    3748. 

  3748. 	white-space: normal;

    3749. 

  3749. }

    3750. 

  3750. .imagelist th.TablePager_sort {

    3751. 

  3751. 	background-color: rgb(204, 204, 255);

    3752. 

  3752. }

    3753. 

  3753. #mw-allmessagestable .allmessages-customised td.am_default {

    3754. 

  3754. 	background-color: rgb(252, 255, 196);

    3755. 

  3755. }

    3756. 

  3756. #mw-allmessagestable tr.allmessages-customised:hover td.am_default {

    3757. 

  3757. 	background-color: rgb(250, 255, 144);

    3758. 

  3758. }

    3759. 

  3759. #mw-allmessagestable td.am_actual {

    3760. 

  3760. 	background-color: rgb(226, 255, 226);

    3761. 

  3761. }

    3762. 

  3762. #mw-allmessagestable tr.allmessages-customised:hover + =

    3763. 

  3763. tr.allmessages-customised td.am_actual {

    3764. 

  3764. 	background-color: rgb(177, 255, 177);

    3765. 

  3765. }

    3766. 

  3766. ul#filetoc {

    3767. 

  3767. 	padding: 5px; border: 1px solid rgb(170, 170, 170); text-align: center; =

    3768. 

  3768. font-size: 95%; margin-right: 0px; margin-bottom: 0.5em; margin-left: =

    3769. 

  3769. 0px; background-color: rgb(249, 249, 249);

    3770. 

  3770. }

    3771. 

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    4344. 

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    4389. 

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    4424. 

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    4425. 

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    4432. 

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    4435. 

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    4449. 

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    4451. 

  4451. none; list-style-image: none;

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    4484. 

  4484. 	margin: 0px 0.5em 0.5em 0px; border: 0px currentColor; clear: left; =

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    4489. 

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    4497. 

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    4499. 

  4499. html .thumbimage {

    4500. 

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    4501. 

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    4502. 

  4502. html .thumbcaption {

    4503. 

  4503. 	padding: 3px !important; border: currentColor; text-align: left; =

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    4514. 

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    4515. 

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    4516. 

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    4517. 

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    4519. 

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    4521. 

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    4522. 

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    4523. 

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    4524. 

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    4525. 

  4525. .hiddenStructure {

    4526. 

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    4527. 

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    4528. 

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    4529. 

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    4530. 

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    4531. 

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    4532. 

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    4533. 

  4533. 	padding: 5px; border: 1px solid rgb(170, 170, 170); font-size: 95%; =

    4534. 

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    4535. 

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    4536. 

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    4537. 

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    4538. 

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    4539. 

  4539. #bodyContent a.external {

    4540. 

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    4542. 

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    4543. 

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    4545. 

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    4546. 

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    4547. 

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    4548. 

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    4549. 

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    4550. 

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    4551. 

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  4552. 	background: url("lock_icon.gif") no-repeat right; padding: 0px 16px;

    4553. 

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    4554. 

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    4555. 

  4555. 	background: url("lock_icon.gif") no-repeat right; padding: 0px 16px;

    4556. 

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    4557. 

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    4558. 

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    4559. 

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    4560. 

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    4561. 

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    4562. 

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    4563. 

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    4564. 

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    4565. 

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    4566. 

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    4567. 

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    4568. 

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    4569. 

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    4570. 

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    4571. 

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    4572. 

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    4573. 

  4573. 	background: url("discussionitem_icon.gif") no-repeat right; padding: =

    4574. 

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    4575. 

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    4576. 

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    4577. 

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    4578. 

  4578. 0px 18px;

    4579. 

  4579. }

    4580. 

  4580. #bodyContent a[href$=3D'.ogg'].external {

    4581. 

  4581. 	background: url("audio.png") no-repeat right; padding: 0px 13px;

    4582. 

  4582. }

    4583. 

  4583. #bodyContent a[href$=3D'.OGG'].external {

    4584. 

  4584. 	background: url("audio.png") no-repeat right; padding: 0px 13px;

    4585. 

  4585. }

    4586. 

  4586. #bodyContent a[href$=3D'.mid'].external {

    4587. 

  4587. 	background: url("audio.png") no-repeat right; padding: 0px 13px;

    4588. 

  4588. }

    4589. 

  4589. #bodyContent a[href$=3D'.MID'].external {

    4590. 

  4590. 	background: url("audio.png") no-repeat right; padding: 0px 13px;

    4591. 

  4591. }

    4592. 

  4592. #bodyContent a[href$=3D'.midi'].external {

    4593. 

  4593. 	background: url("audio.png") no-repeat right; padding: 0px 13px;

    4594. 

  4594. }

    4595. 

  4595. #bodyContent a[href$=3D'.MIDI'].external {

    4596. 

  4596. 	background: url("audio.png") no-repeat right; padding: 0px 13px;

    4597. 

  4597. }

    4598. 

  4598. #bodyContent a[href$=3D'.mp3'].external {

    4599. 

  4599. 	background: url("audio.png") no-repeat right; padding: 0px 13px;

    4600. 

  4600. }

    4601. 

  4601. #bodyContent a[href$=3D'.MP3'].external {

    4602. 

  4602. 	background: url("audio.png") no-repeat right; padding: 0px 13px;

    4603. 

  4603. }

    4604. 

  4604. #bodyContent a[href$=3D'.wav'].external {

    4605. 

  4605. 	background: url("audio.png") no-repeat right; padding: 0px 13px;

    4606. 

  4606. }

    4607. 

  4607. #bodyContent a[href$=3D'.WAV'].external {

    4608. 

  4608. 	background: url("audio.png") no-repeat right; padding: 0px 13px;

    4609. 

  4609. }

    4610. 

  4610. #bodyContent a[href$=3D'.wma'].external {

    4611. 

  4611. 	background: url("audio.png") no-repeat right; padding: 0px 13px;

    4612. 

  4612. }

    4613. 

  4613. #bodyContent a[href$=3D'.WMA'].external {

    4614. 

  4614. 	background: url("audio.png") no-repeat right; padding: 0px 13px;

    4615. 

  4615. }

    4616. 

  4616. .link-audio {

    4617. 

  4617. 	background: url("audio.png") no-repeat right; padding: 0px 13px;

    4618. 

  4618. }

    4619. 

  4619. #bodyContent a[href$=3D'.ogm'].external {

    4620. 

  4620. 	background: url("video.png") no-repeat right; padding: 0px 13px;

    4621. 

  4621. }

    4622. 

  4622. #bodyContent a[href$=3D'.OGM'].external {

    4623. 

  4623. 	background: url("video.png") no-repeat right; padding: 0px 13px;

    4624. 

  4624. }

    4625. 

  4625. #bodyContent a[href$=3D'.avi'].external {

    4626. 

  4626. 	background: url("video.png") no-repeat right; padding: 0px 13px;

    4627. 

  4627. }

    4628. 

  4628. #bodyContent a[href$=3D'.AVI'].external {

    4629. 

  4629. 	background: url("video.png") no-repeat right; padding: 0px 13px;

    4630. 

  4630. }

    4631. 

  4631. #bodyContent a[href$=3D'.mpeg'].external {

    4632. 

  4632. 	background: url("video.png") no-repeat right; padding: 0px 13px;

    4633. 

  4633. }

    4634. 

  4634. #bodyContent a[href$=3D'.MPEG'].external {

    4635. 

  4635. 	background: url("video.png") no-repeat right; padding: 0px 13px;

    4636. 

  4636. }

    4637. 

  4637. #bodyContent a[href$=3D'.mpg'].external {

    4638. 

  4638. 	background: url("video.png") no-repeat right; padding: 0px 13px;

    4639. 

  4639. }

    4640. 

  4640. #bodyContent a[href$=3D'.MPG'].external {

    4641. 

  4641. 	background: url("video.png") no-repeat right; padding: 0px 13px;

    4642. 

  4642. }

    4643. 

  4643. .link-video {

    4644. 

  4644. 	background: url("video.png") no-repeat right; padding: 0px 13px;

    4645. 

  4645. }

    4646. 

  4646. #bodyContent a[href$=3D'.pdf'].external {

    4647. 

  4647. 	background: url("document.png") no-repeat right; padding: 0px 12px;

    4648. 

  4648. }

    4649. 

  4649. #bodyContent a[href$=3D'.PDF'].external {

    4650. 

  4650. 	background: url("document.png") no-repeat right; padding: 0px 12px;

    4651. 

  4651. }

    4652. 

  4652. #bodyContent a[href*=3D'.pdf#'].external {

    4653. 

  4653. 	background: url("document.png") no-repeat right; padding: 0px 12px;

    4654. 

  4654. }

    4655. 

  4655. #bodyContent a[href*=3D'.PDF#'].external {

    4656. 

  4656. 	background: url("document.png") no-repeat right; padding: 0px 12px;

    4657. 

  4657. }

    4658. 

  4658. #bodyContent a[href*=3D'.pdf?'].external {

    4659. 

  4659. 	background: url("document.png") no-repeat right; padding: 0px 12px;

    4660. 

  4660. }

    4661. 

  4661. #bodyContent a[href*=3D'.PDF?'].external {

    4662. 

  4662. 	background: url("document.png") no-repeat right; padding: 0px 12px;

    4663. 

  4663. }

    4664. 

  4664. .link-document {

    4665. 

  4665. 	background: url("document.png") no-repeat right; padding: 0px 12px;

    4666. 

  4666. }

    4667. 

  4667. .rtl #bodyContent a.external {

    4668. 

  4668. 	background-position: left; padding-right: 0px;

    4669. 

  4669. }

    4670. 

  4670. .rtl a.feedlink {

    4671. 

  4671. 	background-position: right; padding-right: 16px; padding-left: 0px;

    4672. 

  4672. }

    4673. 

  4673. .ltr #bodyContent a.external {

    4674. 

  4674. 	padding-left: 0px;

    4675. 

  4675. }

    4676. 

  4676. #bodyContent a.extiw {

    4677. 

  4677. 	color: rgb(51, 102, 187);

    4678. 

  4678. }

    4679. 

  4679. #bodyContent a.extiw:active {

    4680. 

  4680. 	color: rgb(51, 102, 187);

    4681. 

  4681. }

    4682. 

  4682. #bodyContent a.external {

    4683. 

  4683. 	color: rgb(51, 102, 187);

    4684. 

  4684. }

    4685. 

  4685. .portlet {

    4686. 

  4686. 	margin: 0px 0px 0.5em; padding: 0px; border: currentColor; width: =

    4687. 

  4687. 11.6em; overflow: hidden; float: none;

    4688. 

  4688. }

    4689. 

  4689. .portlet h4 {

    4690. 

  4690. 	font-size: 95%; font-weight: normal; white-space: nowrap;

    4691. 

  4691. }

    4692. 

  4692. .portlet h5 {

    4693. 

  4693. 	padding: 0px 1em 0px 0.5em; height: 1em; text-transform: lowercase; =

    4694. 

  4694. font-size: 91%; font-weight: normal; display: inline; white-space: =

    4695. 

  4695. nowrap;

    4696. 

  4696. }

    4697. 

  4697. .portlet h6 {

    4698. 

  4698. 	background: rgb(255, 174, 46); border-width: 1px; border-style: solid =

    4699. 

  4699. solid none; border-color: rgb(47, 111, 171); padding: 0px 1em; height: =

    4700. 

  4700. 1.2em; text-transform: lowercase; font-size: 1em; font-weight: normal; =

    4701. 

  4701. display: block; white-space: nowrap;

    4702. 

  4702. }

    4703. 

  4703. .pBody {

    4704. 

  4704. 	padding: 0px 0.8em 0.3em 0.5em; border: 1px solid rgb(170, 170, 170); =

    4705. 

  4705. color: black; font-size: 95%; border-collapse: collapse; =

    4706. 

  4706. background-color: white;

    4707. 

  4707. }

    4708. 

  4708. .portlet h1 {

    4709. 

  4709. 	margin: 0px; padding: 0px;

    4710. 

  4710. }

    4711. 

  4711. .portlet h2 {

    4712. 

  4712. 	margin: 0px; padding: 0px;

    4713. 

  4713. }

    4714. 

  4714. .portlet h3 {

    4715. 

  4715. 	margin: 0px; padding: 0px;

    4716. 

  4716. }

    4717. 

  4717. .portlet h4 {

    4718. 

  4718. 	margin: 0px; padding: 0px;

    4719. 

  4719. }

    4720. 

  4720. .portlet ul {

    4721. 

  4721. 	line-height: 1.5em; font-size: 95%; list-style-type: square; =

    4722. 

  4722. list-style-image: url("bullet.gif");

    4723. 

  4723. }

    4724. 

  4724. .portlet li {

    4725. 

  4725. 	margin: 0px; padding: 0px;

    4726. 

  4726. }

    4727. 

  4727. #p-logo {

    4728. 

  4728. 	left: 0px; top: 0px; width: 12em; height: 155px; overflow: visible; =

    4729. 

  4729. position: absolute; z-index: 3;

    4730. 

  4730. }

    4731. 

  4731. #p-logo h5 {

    4732. 

  4732. 	display: none;

    4733. 

  4733. }

    4734. 

  4734. #p-logo a {

    4735. 

  4735. 	background-position: 35% 50% !important; width: 12.2em; height: 155px; =

    4736. 

  4736. text-decoration: none; display: block; background-repeat: no-repeat;

    4737. 

  4737. }

    4738. 

  4738. #p-logo a:hover {

    4739. 

  4739. 	background-position: 35% 50% !important; width: 12.2em; height: 155px; =

    4740. 

  4740. text-decoration: none; display: block; background-repeat: no-repeat;

    4741. 

  4741. }

    4742. 

  4742. #p-search {

    4743. 

  4743. 	position: relative; z-index: 3;

    4744. 

  4744. }

    4745. 

  4745. input.searchButton {

    4746. 

  4746. 	font-size: 95%; margin-top: 1px;

    4747. 

  4747. }

    4748. 

  4748. #searchGoButton {

    4749. 

  4749. 	padding-right: 0.5em; padding-left: 0.5em; font-weight: bold;

    4750. 

  4750. }

    4751. 

  4751. #searchInput {

    4752. 

  4752. 	margin: 0px; width: 10.9em; font-size: 95%;

    4753. 

  4753. }

    4754. 

  4754. #p-search .pBody {

    4755. 

  4755. 	padding: 0.5em 0.4em 0.4em; text-align: center;

    4756. 

  4756. }

    4757. 

  4757. #p-search #searchform div div {

    4758. 

  4758. 	font-size: 95%; margin-top: 0.4em;

    4759. 

  4759. }

    4760. 

  4760. #p-personal {

    4761. 

  4761. 	left: 0px; top: 0px; position: absolute; z-index: 0;

    4762. 

  4762. }

    4763. 

  4763. #p-personal {

    4764. 

  4764. 	margin: 0px; padding: 0px; border: currentColor; width: 100%; =

    4765. 

  4765. line-height: 1.2em; overflow: visible; white-space: nowrap;

    4766. 

  4766. }

    4767. 

  4767. #p-personal h5 {

    4768. 

  4768. 	display: none;

    4769. 

  4769. }

    4770. 

  4770. #p-personal .portlet {

    4771. 

  4771. 	margin: 0px; padding: 0px; border: currentColor; overflow: visible; =

    4772. 

  4772. z-index: 0;

    4773. 

  4773. }

    4774. 

  4774. #p-personal .pBody {

    4775. 

  4775. 	margin: 0px; padding: 0px; border: currentColor; overflow: visible; =

    4776. 

  4776. z-index: 0;

    4777. 

  4777. }

    4778. 

  4778. #p-personal ul {

    4779. 

  4779. 	list-style: none; margin: 0px; padding: 0px 2em 0px 3em; border: =

    4780. 

  4780. currentColor; text-align: right; color: rgb(47, 111, 171); line-height: =

    4781. 

  4781. 1.4em; z-index: 0; cursor: default;

    4782. 

  4782. }

    4783. 

  4783. #p-personal li {

    4784. 

  4784. 	padding: 0px; border: currentColor; color: rgb(47, 111, 171); =

    4785. 

  4785. line-height: 1.2em; margin-left: 1em; display: inline; z-index: 0;

    4786. 

  4786. }

    4787. 

  4787. #p-personal li a {

    4788. 

  4788. 	color: rgb(0, 88, 150); padding-bottom: 0.2em; text-decoration: none;

    4789. 

  4789. }

    4790. 

  4790. #p-personal li a:hover {

    4791. 

  4791. 	padding-bottom: 0.2em; text-decoration: none; background-color: white;

    4792. 

  4792. }

    4793. 

  4793. #p-personal li.active a:hover {

    4794. 

  4794. 	background-color: transparent;

    4795. 

  4795. }

    4796. 

  4796. li#pt-userpage {

    4797. 

  4797. 	background: url("user.gif") no-repeat left top; text-transform: none; =

    4798. 

  4798. padding-left: 20px;

    4799. 

  4799. }

    4800. 

  4800. li#pt-anonuserpage {

    4801. 

  4801. 	background: url("user.gif") no-repeat left top; text-transform: none; =

    4802. 

  4802. padding-left: 20px;

    4803. 

  4803. }

    4804. 

  4804. li#pt-login {

    4805. 

  4805. 	background: url("user.gif") no-repeat left top; text-transform: none; =

    4806. 

  4806. padding-left: 20px;

    4807. 

  4807. }

    4808. 

  4808. #p-personal ul {

    4809. 

  4809. 	text-transform: lowercase;

    4810. 

  4810. }

    4811. 

  4811. #p-personal li.active {

    4812. 

  4812. 	font-weight: bold;

    4813. 

  4813. }

    4814. 

  4814. #p-cactions {

    4815. 

  4815. 	list-style: none; margin: 0px; left: 11.5em; top: 1.3em; width: 76%; =

    4816. 

  4816. line-height: 1.1em; overflow: visible; padding-left: 1em; font-size: =

    4817. 

  4817. 95%; white-space: nowrap; border-collapse: collapse; position: absolute;

    4818. 

  4818. }

    4819. 

  4819. #p-cactions ul {

    4820. 

  4820. 	list-style: none;

    4821. 

  4821. }

    4822. 

  4822. #p-cactions li {

    4823. 

  4823. 	background: white; border-width: 1px 1px medium; border-style: solid =

    4824. 

  4824. solid none; border-color: rgb(170, 170, 170) rgb(170, 170, 170) =

    4825. 

  4825. currentColor; margin: 0px 0.3em 0px 0px; padding: 0px 0px 0.1em; =

    4826. 

  4826. overflow: visible; display: inline;

    4827. 

  4827. }

    4828. 

  4828. #p-cactions li.selected {

    4829. 

  4829. 	border-color: rgb(250, 189, 35); padding: 0px 0px 0.2em; font-weight: =

    4830. 

  4830. bold;

    4831. 

  4831. }

    4832. 

  4832. #p-cactions li a {

    4833. 

  4833. 	margin: 0px; padding: 0px 0.8em 0.3em; border: currentColor; color: =

    4834. 

  4834. rgb(0, 43, 184); text-decoration: none; position: relative; z-index: 0; =

    4835. 

  4835. background-color: rgb(251, 251, 251);

    4836. 

  4836. }

    4837. 

  4837. #p-cactions li.selected a {

    4838. 

  4838. 	padding: 0px 1em 0.2em !important; z-index: 3; background-color: white;

    4839. 

  4839. }

    4840. 

  4840. #p-cactions .new a {

    4841. 

  4841. 	color: rgb(186, 0, 0);

    4842. 

  4842. }

    4843. 

  4843. #p-cactions li a:hover {

    4844. 

  4844. 	text-decoration: none; z-index: 3; background-color: white;

    4845. 

  4845. }

    4846. 

  4846. #p-cactions h5 {

    4847. 

  4847. 	display: none;

    4848. 

  4848. }

    4849. 

  4849. #p-cactions li.istalk {

    4850. 

  4850. 	margin-right: 0px;

    4851. 

  4851. }

    4852. 

  4852. #p-cactions li.istalk a {

    4853. 

  4853. 	padding-right: 0.5em;

    4854. 

  4854. }

    4855. 

  4855. #p-cactions #ca-addsection a {

    4856. 

  4856. 	padding-right: 0.4em; padding-left: 0.4em;

    4857. 

  4857. }

    4858. 

  4858. li#ca-talk {

    4859. 

  4859. 	margin-right: 1.6em;

    4860. 

  4860. }

    4861. 

  4861. li#ca-watch {

    4862. 

  4862. 	margin-left: 1.6em;

    4863. 

  4863. }

    4864. 

  4864. li#ca-unwatch {

    4865. 

  4865. 	margin-left: 1.6em;

    4866. 

  4866. }

    4867. 

  4867. li#ca-varlang-0 {

    4868. 

  4868. 	margin-left: 1.6em;

    4869. 

  4869. }

    4870. 

  4870. li#ca-print {

    4871. 

  4871. 	margin-left: 1.6em;

    4872. 

  4872. }

    4873. 

  4873. #p-cactions .pBody {

    4874. 

  4874. 	padding: 0px; border: 0px currentColor; color: inherit; font-size: 1em; =

    4875. 

  4875. border-collapse: inherit; background-color: transparent;

    4876. 

  4876. }

    4877. 

  4877. #p-cactions .hiddenStructure {

    4878. 

  4878. 	display: none;

    4879. 

  4879. }

    4880. 

  4880. #p-cactions li a {

    4881. 

  4881. 	text-transform: lowercase;

    4882. 

  4882. }

    4883. 

  4883. #p-lang {

    4884. 

  4884. 	position: relative; z-index: 3;

    4885. 

  4885. }

    4886. 

  4886. .capitalize-all-nouns .portlet h5 {

    4887. 

  4887. 	text-transform: none;

    4888. 

  4888. }

    4889. 

  4889. .capitalize-all-nouns .portlet h6 {

    4890. 

  4890. 	text-transform: none;

    4891. 

  4891. }

    4892. 

  4892. .capitalize-all-nouns #p-personal ul {

    4893. 

  4893. 	text-transform: none;

    4894. 

  4894. }

    4895. 

  4895. .capitalize-all-nouns #p-cactions ul li a {

    4896. 

  4896. 	text-transform: none;

    4897. 

  4897. }

    4898. 

  4898. #t-ispermalink {

    4899. 

  4899. 	color: rgb(153, 153, 153);

    4900. 

  4900. }

    4901. 

  4901. #t-iscite {

    4902. 

  4902. 	color: rgb(153, 153, 153);

    4903. 

  4903. }

    4904. 

  4904. #footer {

    4905. 

  4905. 	margin: 0.6em 0px 1em; padding: 0.4em 0px 1.2em; text-align: center; =

    4906. 

  4906. font-size: 90%; border-top-color: rgb(250, 189, 35); =

    4907. 

  4907. border-bottom-color: rgb(250, 189, 35); border-top-width: 1px; =

    4908. 

  4908. border-bottom-width: 1px; border-top-style: solid; border-bottom-style: =

    4909. 

  4909. solid; background-color: white;

    4910. 

  4910. }

    4911. 

  4911. #footer li {

    4912. 

  4912. 	margin: 0px 1.3em; display: inline;

    4913. 

  4913. }

    4914. 

  4914. #f-poweredbyico {

    4915. 

  4915. 	margin: 0px 8px; top: -2px; position: relative;

    4916. 

  4916. }

    4917. 

  4917. #f-copyrightico {

    4918. 

  4918. 	margin: 0px 8px; top: -2px; position: relative;

    4919. 

  4919. }

    4920. 

  4920. #f-poweredbyico {

    4921. 

  4921. 	height: 1%; float: right;

    4922. 

  4922. }

    4923. 

  4923. #f-copyrightico {

    4924. 

  4924. 	height: 1%; float: left;

    4925. 

  4925. }

    4926. 

  4926. .mw-htmlform-submit {

    4927. 

  4927. 	padding-right: 0.3em; padding-left: 0.3em; font-weight: bold; =

    4928. 

  4928. margin-right: 2em;

    4929. 

  4929. }

    4930. 

  4930. #preftoc {

    4931. 

  4931. 	margin: 0px; padding: 0px; width: 100%; clear: both;

    4932. 

  4932. }

    4933. 

  4933. #preftoc li {

    4934. 

  4934. 	color: rgb(0, 0, 0); background-color: rgb(240, 240, 240);

    4935. 

  4935. }

    4936. 

  4936. #preftoc li {

    4937. 

  4937. 	border-width: 1px 1px 0px; border-style: solid solid none; =

    4938. 

  4938. border-color: rgb(255, 255, 255) rgb(113, 111, 100) currentColor =

    4939. 

  4939. rgb(255, 255, 255); margin: 1px -2px 1px 2px; padding: 2px 0px 3px; =

    4940. 

  4940. float: left; list-style-type: none; list-style-image: none; white-space: =

    4941. 

  4941. nowrap; position: relative; z-index: 3;

    4942. 

  4942. }

    4943. 

  4943. #preftoc li.selected {

    4944. 

  4944. 	border-width: 1px 1px medium; border-style: solid solid none; =

    4945. 

  4945. border-color: rgb(170, 170, 170) rgb(170, 170, 170) currentColor; top: =

    4946. 

  4946. 1px; padding-top: 2px; font-weight: bold; margin-right: -3px; cursor: =

    4947. 

  4947. default; background-color: rgb(249, 249, 249);

    4948. 

  4948. }

    4949. 

  4949. #preftoc > li.selected {

    4950. 

  4950. 	top: 2px;

    4951. 

  4951. }

    4952. 

  4952. #preftoc a {

    4953. 

  4953. 	padding: 0px 0.7em; color: rgb(0, 0, 0); text-decoration: none; =

    4954. 

  4954. display: block; position: relative;

    4955. 

  4955. }

    4956. 

  4956. #preftoc a:active {

    4957. 

  4957. 	padding: 0px 0.7em; color: rgb(0, 0, 0); text-decoration: none; =

    4958. 

  4958. display: block; position: relative;

    4959. 

  4959. }

    4960. 

  4960. #preftoc li.selected a {

    4961. 

  4961. 	text-decoration: none; cursor: default;

    4962. 

  4962. }

    4963. 

  4963. #preferences {

    4964. 

  4964. 	margin: 0px; padding: 1.5em; border: 1px solid rgb(170, 170, 170); =

    4965. 

  4965. clear: both; background-color: rgb(249, 249, 249);

    4966. 

  4966. }

    4967. 

  4967. .prefsection {

    4968. 

  4968. 	margin: 0px; padding: 0px; border: currentColor;

    4969. 

  4969. }

    4970. 

  4970. .prefsection legend {

    4971. 

  4971. 	font-weight: bold;

    4972. 

  4972. }

    4973. 

  4973. .prefsection table {

    4974. 

  4974. 	background-color: rgb(249, 249, 249);

    4975. 

  4975. }

    4976. 

  4976. .prefsection legend {

    4977. 

  4977. 	background-color: rgb(249, 249, 249);

    4978. 

  4978. }

    4979. 

  4979. .mainLegend {

    4980. 

  4980. 	display: none;

    4981. 

  4981. }

    4982. 

  4982. td.htmlform-tip {

    4983. 

  4983. 	padding: 0.2em 2em; color: rgb(102, 102, 102); font-size: x-small;

    4984. 

  4984. }

    4985. 

  4985. .preferences-login {

    4986. 

  4986. 	clear: both; margin-bottom: 1.5em;

    4987. 

  4987. }

    4988. 

  4988. .prefcache {

    4989. 

  4989. 	font-size: 90%; margin-top: 2em;

    4990. 

  4990. }

    4991. 

  4991. div#userloginForm form {

    4992. 

  4992. 	margin: 0px 3em 1em 0px; padding: 1.5em 2em; border: 1px solid rgb(170, =

    4993. 

  4993. 170, 170); clear: both; float: left; background-color: rgb(249, 249, =

    4994. 

  4994. 249);

    4995. 

  4995. }

    4996. 

  4996. div#userlogin form#userlogin2 {

    4997. 

  4997. 	margin: 0px 3em 1em 0px; padding: 1.5em 2em; border: 1px solid rgb(170, =

    4998. 

  4998. 170, 170); clear: both; float: left; background-color: rgb(249, 249, =

    4999. 

  4999. 249);

    5000. 

  5000. }

    5001. 

  5001. .rtl div#userloginForm form {

    5002. 

  5002. 	float: right;

    5003. 

  5003. }

    5004. 

  5004. .rtl div#userlogin form#userlogin2 {

    5005. 

  5005. 	float: right;

    5006. 

  5006. }

    5007. 

  5007. div#userloginForm table {

    5008. 

  5008. 	background-color: rgb(249, 249, 249);

    5009. 

  5009. }

    5010. 

  5010. div#userlogin form#userlogin2 table {

    5011. 

  5011. 	background-color: rgb(249, 249, 249);

    5012. 

  5012. }

    5013. 

  5013. div#userloginForm h2 {

    5014. 

  5014. 	padding-top: 0px;

    5015. 

  5015. }

    5016. 

  5016. div#userlogin form#userlogin2 h2 {

    5017. 

  5017. 	padding-top: 0px;

    5018. 

  5018. }

    5019. 

  5019. div#userlogin .captcha {

    5020. 

  5020. 	padding: 1.5em 2em; border: 1px solid rgb(187, 187, 187); =

    5021. 

  5021. background-color: white;

    5022. 

  5022. }

    5023. 

  5023. div#userloginForm .captcha {

    5024. 

  5024. 	padding: 1.5em 2em; border: 1px solid rgb(187, 187, 187); =

    5025. 

  5025. background-color: white;

    5026. 

  5026. }

    5027. 

  5027. #loginend {

    5028. 

  5028. 	clear: both;

    5029. 

  5029. }

    5030. 

  5030. #signupend {

    5031. 

  5031. 	clear: both;

    5032. 

  5032. }

    5033. 

  5033. #userloginprompt {

    5034. 

  5034. 	font-size: 85%;

    5035. 

  5035. }

    5036. 

  5036. #languagelinks {

    5037. 

  5037. 	font-size: 85%;

    5038. 

  5038. }

    5039. 

  5039. #login-sectiontip {

    5040. 

  5040. 	line-height: 1.2; padding-top: 2em; font-size: 85%;

    5041. 

  5041. }

    5042. 

  5042. #userlogin .loginText {

    5043. 

  5043. 	width: 12em;

    5044. 

  5044. }

    5045. 

  5045. #userlogin .loginPassword {

    5046. 

  5046. 	width: 12em;

    5047. 

  5047. }

    5048. 

  5048. #userloginlink a {

    5049. 

  5049. 	font-weight: bold;

    5050. 

  5050. }

    5051. 

  5051. #wpLoginattempt {

    5052. 

  5052. 	font-weight: bold;

    5053. 

  5053. }

    5054. 

  5054. #wpCreateaccount {

    5055. 

  5055. 	font-weight: bold;

    5056. 

  5056. }

    5057. 

  5057. * > html #p-cactions li {

    5058. 

  5058. 	border: currentColor;

    5059. 

  5059. }

    5060. 

  5060. * > html #p-cactions li a {

    5061. 

  5061. 	border-width: 1px 1px medium; border-style: solid solid none; =

    5062. 

  5062. border-color: rgb(170, 170, 170) rgb(170, 170, 170) currentColor;

    5063. 

  5063. }

    5064. 

  5064. * > html #p-cactions li.selected a {

    5065. 

  5065. 	border-color: rgb(250, 189, 35);

    5066. 

  5066. }

    5067. 

  5067. * > html #f-poweredbyico {

    5068. 

  5068. 	width: 88px;

    5069. 

  5069. }

    5070. 

  5070. * > html #f-copyrightico {

    5071. 

  5071. 	width: 88px;

    5072. 

  5072. }

    5073. 

  5073. * > html #bodyContent {

    5074. 

  5074. 	width: 100%; padding-bottom: 25px; overflow-x: auto;

    5075. 

  5075. }

    5076. 

  5076. * > html #bodyContent pre {

    5077. 

  5077. 	width: 100%; padding-bottom: 25px; overflow-x: auto;

    5078. 

  5078. }

    5079. 

  5079. * html #footer {

    5080. 

  5080. 	margin-top: 0px;

    5081. 

  5081. }

    5082. 

  5082. * html #column-content {

    5083. 

  5083. 	margin-bottom: 0px; display: inline;

    5084. 

  5084. }

    5085. 

  5085. * html div.editsection {

    5086. 

  5086. 	font-size: smaller;

    5087. 

  5087. }

    5088. 

  5088. #pagehistory li.selected {

    5089. 

  5089. 	position: relative;

    5090. 

  5090. }

    5091. 

  5091. * > html #column-content {

    5092. 

  5092. 	float: none;

    5093. 

  5093. }

    5094. 

  5094. * > html #column-one {

    5095. 

  5095. 	left: 0px; top: 0px; position: absolute;

    5096. 

  5096. }

    5097. 

  5097. * > html #footer {

    5098. 

  5098. 	margin-left: 13.2em;

    5099. 

  5099. }

    5100. 

  5100. .redirectText {

    5101. 

  5101. 	margin: 5px; font-size: 150%;

    5102. 

  5102. }

    5103. 

  5103. .printfooter {

    5104. 

  5104. 	display: none;

    5105. 

  5105. }

    5106. 

  5106. div.patrollink {

    5107. 

  5107. 	clear: both;

    5108. 

  5108. }

    5109. 

  5109. .sharedUploadNotice {

    5110. 

  5110. 	font-style: italic;

    5111. 

  5111. }

    5112. 

  5112. span.updatedmarker {

    5113. 

  5113. 	color: black; background-color: rgb(0, 255, 0);

    5114. 

  5114. }

    5115. 

  5115. .previewnote {

    5116. 

  5116. 	color: rgb(204, 0, 0); margin-bottom: 1em;

    5117. 

  5117. }

    5118. 

  5118. .previewnote p {

    5119. 

  5119. 	margin: 0.8em 0px; text-indent: 3em;

    5120. 

  5120. }

    5121. 

  5121. .editExternally {

    5122. 

  5122. 	padding: 3px; border: 1px solid gray; text-align: center; font-size: =

    5123. 

  5123. small; margin-top: 0.5em; float: left; background-color: rgb(255, 255, =

    5124. 

  5124. 255);

    5125. 

  5125. }

    5126. 

  5126. .editExternallyHelp {

    5127. 

  5127. 	color: gray; font-style: italic;

    5128. 

  5128. }

    5129. 

  5129. .toggle {

    5130. 

  5130. 	text-indent: -2em; margin-left: 2em;

    5131. 

  5131. }

    5132. 

  5132. input#wpSummary {

    5133. 

  5133. 	width: 80%;

    5134. 

  5134. }

    5135. 

  5135. input#wpSave {

    5136. 

  5136. 	margin-right: 0.33em;

    5137. 

  5137. }

    5138. 

  5138. input#wpDiff {

    5139. 

  5139. 	margin-right: 0.33em;

    5140. 

  5140. }

    5141. 

  5141. #wpSave {

    5142. 

  5142. 	font-weight: bold;

    5143. 

  5143. }

    5144. 

  5144. table.revisionform_default {

    5145. 

  5145. 	border: 1px solid rgb(0, 0, 0);

    5146. 

  5146. }

    5147. 

  5147. table.revisionform_focus {

    5148. 

  5148. 	border: 1px solid rgb(0, 0, 0); background-color: rgb(0, 187, 255);

    5149. 

  5149. }

    5150. 

  5150. tr.revision_tr_default {

    5151. 

  5151. 	background-color: rgb(238, 238, 238);

    5152. 

  5152. }

    5153. 

  5153. tr.revision_tr_first {

    5154. 

  5154. 	background-color: rgb(221, 221, 221);

    5155. 

  5155. }

    5156. 

  5156. p.revision_saved {

    5157. 

  5157. 	color: green; font-weight: bold;

    5158. 

  5158. }

    5159. 

  5159. div.noarticletext {

    5160. 

  5160. 	background: rgb(255, 255, 255); padding: 0.2em 1em; border: 1px solid =

    5161. 

  5161. rgb(204, 204, 204); color: rgb(0, 0, 0);

    5162. 

  5162. }

    5163. 

  5163. div#searchTargetContainer {

    5164. 

  5164. 	background: white; left: 10px; top: 10px; width: 90%;

    5165. 

  5165. }

    5166. 

  5166. div#searchTarget {

    5167. 

  5167. 	background: rgb(240, 240, 240); margin: 5px; padding: 3px; border: 1px =

    5168. 

  5168. solid blue;

    5169. 

  5169. }

    5170. 

  5170. div#searchTarget ul li {

    5171. 

  5171. 	list-style: none;

    5172. 

  5172. }

    5173. 

  5173. div#searchTarget ul li::before {

    5174. 

  5174. 	color: orange; content: "\00BB \0020";

    5175. 

  5175. }

    5176. 

  5176. div#searchTargetHide {

    5177. 

  5177. 	background: rgb(220, 220, 220); padding: 2px; border: 1px solid black; =

    5178. 

  5178. float: right;

    5179. 

  5179. }

    5180. 

  5180. #powersearch p {

    5181. 

  5181. 	margin-top: 0px;

    5182. 

  5182. }

    5183. 

  5183. div.multipageimagenavbox {

    5184. 

  5184. 	background: rgb(240, 240, 240); margin: 1em; padding: 4px; border: 1px =

    5185. 

  5185. solid silver;

    5186. 

  5186. }

    5187. 

  5187. div.multipageimagenavbox div.thumb {

    5188. 

  5188. 	border: currentColor; margin-right: 2em; margin-left: 2em;

    5189. 

  5189. }

    5190. 

  5190. div.multipageimagenavbox hr {

    5191. 

  5191. 	margin: 6px;

    5192. 

  5192. }

    5193. 

  5193. table.multipageimage td {

    5194. 

  5194. 	text-align: center;

    5195. 

  5195. }

    5196. 

  5196. .templatesUsed {

    5197. 

  5197. 	margin-top: 1.5em;

    5198. 

  5198. }

    5199. 

  5199. .mw-summary-preview {

    5200. 

  5200. 	margin: 0.1em 0px;

    5201. 

  5201. }

    5202. 

  5202. div.mw-lag-warn-normal {

    5203. 

  5203. 	margin: 3px auto; padding: 3px; text-align: center;

    5204. 

  5204. }

    5205. 

  5205. div.mw-lag-warn-high {

    5206. 

  5206. 	margin: 3px auto; padding: 3px; text-align: center;

    5207. 

  5207. }

    5208. 

  5208. div.mw-lag-warn-normal {

    5209. 

  5209. 	border: 1px solid rgb(255, 204, 102); background-color: rgb(255, 255, =

    5210. 

  5210. 204);

    5211. 

  5211. }

    5212. 

  5212. div.mw-lag-warn-high {

    5213. 

  5213. 	border: 2px solid rgb(255, 0, 51); font-weight: bold; background-color: =

    5214. 

  5214. rgb(255, 204, 204);

    5215. 

  5215. }

    5216. 

  5216. .MediaTransformError {

    5217. 

  5217. 	padding: 0.1em; background-color: rgb(204, 204, 204);

    5218. 

  5218. }

    5219. 

  5219. .MediaTransformError td {

    5220. 

  5220. 	text-align: center; font-size: 90%; vertical-align: middle;

    5221. 

  5221. }

    5222. 

  5222. .os-suggest {

    5223. 

  5223. 	font-size: 127%;

    5224. 

  5224. }

    5225. 

  5225. .no-text-transform {

    5226. 

  5226. 	text-transform: none;

    5227. 

  5227. }

    5228. 

  5228. 

    5229. 

  5229. ------=_NextPart_000_0000_01CC6DEF.5A1D4220

    5230. 

  5230. Content-Type: application/octet-stream

    5231. 

  5231. Content-Transfer-Encoding: 7bit

    5232. 

  5232. Content-Location: http://wiki.theory.org/index.php?title=-&action=raw&maxage=18000&gen=css

    5233. 

  5233. 

    5234. 

  5234. a.new {

    5235. 

  5235. 	color: rgb(204, 34, 0);

    5236. 

  5236. }

    5237. 

  5237. #quickbar a.new {

    5238. 

  5238. 	color: rgb(204, 34, 0);

    5239. 

  5239. }

    5240. 

  5240. 

    5241. 

  5241. ------=_NextPart_000_0000_01CC6DEF.5A1D4220

    5242. 

  5242. Content-Type: application/octet-stream

    5243. 

  5243. Content-Transfer-Encoding: quoted-printable

    5244. 

  5244. Content-Location: http://wiki.theory.org/skins/common/wikibits.js?270

    5245. 

  5245. 

    5246. 

  5246. // MediaWiki JavaScript support functions=0A=

    5247. 

  5247. =0A=

    5248. 

  5248. var clientPC =3D navigator.userAgent.toLowerCase(); // Get client info=0A=

    5249. 

  5249. var is_gecko =3D /gecko/.test( clientPC ) &&=0A=

    5250. 

  5250. 	!/khtml|spoofer|netscape\/7\.0/.test(clientPC);=0A=

    5251. 

  5251. var webkit_match =3D clientPC.match(/applewebkit\/(\d+)/);=0A=

    5252. 

  5252. if (webkit_match) {=0A=

    5253. 

  5253. 	var is_safari =3D clientPC.indexOf('applewebkit') !=3D -1 &&=0A=

    5254. 

  5254. 		clientPC.indexOf('spoofer') =3D=3D -1;=0A=

    5255. 

  5255. 	var is_safari_win =3D is_safari && clientPC.indexOf('windows') !=3D -1;=0A=

    5256. 

  5256. 	var webkit_version =3D parseInt(webkit_match[1]);=0A=

    5257. 

  5257. }=0A=

    5258. 

  5258. // For accesskeys; note that FF3+ is included here!=0A=

    5259. 

  5259. var is_ff2 =3D /firefox\/[2-9]|minefield\/3/.test( clientPC );=0A=

    5260. 

  5260. var ff2_bugs =3D /firefox\/2/.test( clientPC );=0A=

    5261. 

  5261. // These aren't used here, but some custom scripts rely on them=0A=

    5262. 

  5262. var is_ff2_win =3D is_ff2 && clientPC.indexOf('windows') !=3D -1;=0A=

    5263. 

  5263. var is_ff2_x11 =3D is_ff2 && clientPC.indexOf('x11') !=3D -1;=0A=

    5264. 

  5264. if (clientPC.indexOf('opera') !=3D -1) {=0A=

    5265. 

  5265. 	var is_opera =3D true;=0A=

    5266. 

  5266. 	var is_opera_preseven =3D window.opera && !document.childNodes;=0A=

    5267. 

  5267. 	var is_opera_seven =3D window.opera && document.childNodes;=0A=

    5268. 

  5268. 	var is_opera_95 =3D /opera\/(9\.[5-9]|[1-9][0-9])/.test( clientPC );=0A=

    5269. 

  5269. 	var opera6_bugs =3D is_opera_preseven;=0A=

    5270. 

  5270. 	var opera7_bugs =3D is_opera_seven && !is_opera_95;=0A=

    5271. 

  5271. 	var opera95_bugs =3D /opera\/(9\.5)/.test( clientPC );=0A=

    5272. 

  5272. }=0A=

    5273. 

  5273. // As recommended by =

    5274. 

  5274. <http://msdn.microsoft.com/en-us/library/ms537509.aspx>,=0A=

    5275. 

  5275. // avoiding false positives from moronic extensions that append to the =

    5276. 

  5276. IE UA=0A=

    5277. 

  5277. // string (bug 23171)=0A=

    5278. 

  5278. var ie6_bugs =3D false;=0A=

    5279. 

  5279. if ( /msie ([0-9]{1,}[\.0-9]{0,})/.exec( clientPC ) !=3D null=0A=

    5280. 

  5280. && parseFloat( RegExp.$1 ) <=3D 6.0 ) {=0A=

    5281. 

  5281. 	ie6_bugs =3D true;=0A=

    5282. 

  5282. }=0A=

    5283. 

  5283. =0A=

    5284. 

  5284. // Global external objects used by this script.=0A=

    5285. 

  5285. /*extern ta, stylepath, skin */=0A=

    5286. 

  5286. =0A=

    5287. 

  5287. // add any onload functions in this hook (please don't hard-code any =

    5288. 

  5288. events in the xhtml source)=0A=

    5289. 

  5289. var doneOnloadHook;=0A=

    5290. 

  5290. =0A=

    5291. 

  5291. if (!window.onloadFuncts) {=0A=

    5292. 

  5292. 	var onloadFuncts =3D [];=0A=

    5293. 

  5293. }=0A=

    5294. 

  5294. =0A=

    5295. 

  5295. function addOnloadHook( hookFunct ) {=0A=

    5296. 

  5296. 	// Allows add-on scripts to add onload functions=0A=

    5297. 

  5297. 	if( !doneOnloadHook ) {=0A=

    5298. 

  5298. 		onloadFuncts[onloadFuncts.length] =3D hookFunct;=0A=

    5299. 

  5299. 	} else {=0A=

    5300. 

  5300. 		hookFunct();  // bug in MSIE script loading=0A=

    5301. 

  5301. 	}=0A=

    5302. 

  5302. }=0A=

    5303. 

  5303. =0A=

    5304. 

  5304. function hookEvent( hookName, hookFunct ) {=0A=

    5305. 

  5305. 	addHandler( window, hookName, hookFunct );=0A=

    5306. 

  5306. }=0A=

    5307. 

  5307. =0A=

    5308. 

  5308. function importScript( page ) {=0A=

    5309. 

  5309. 	// TODO: might want to introduce a utility function to match =

    5310. 

  5310. wfUrlencode() in PHP=0A=

    5311. 

  5311. 	var uri =3D wgScript + '?title=3D' +=0A=

    5312. 

  5312. 		encodeURIComponent(page.replace(/ =

    5313. 

  5313. /g,'_')).replace(/%2F/ig,'/').replace(/%3A/ig,':') +=0A=

    5314. 

  5314. 		'&action=3Draw&ctype=3Dtext/javascript';=0A=

    5315. 

  5315. 	return importScriptURI( uri );=0A=

    5316. 

  5316. }=0A=

    5317. 

  5317. =0A=

    5318. 

  5318. var loadedScripts =3D {}; // included-scripts tracker=0A=

    5319. 

  5319. function importScriptURI( url ) {=0A=

    5320. 

  5320. 	if ( loadedScripts[url] ) {=0A=

    5321. 

  5321. 		return null;=0A=

    5322. 

  5322. 	}=0A=

    5323. 

  5323. 	loadedScripts[url] =3D true;=0A=

    5324. 

  5324. 	var s =3D document.createElement( 'script' );=0A=

    5325. 

  5325. 	s.setAttribute( 'src', url );=0A=

    5326. 

  5326. 	s.setAttribute( 'type', 'text/javascript' );=0A=

    5327. 

  5327. 	document.getElementsByTagName('head')[0].appendChild( s );=0A=

    5328. 

  5328. 	return s;=0A=

    5329. 

  5329. }=0A=

    5330. 

  5330. =0A=

    5331. 

  5331. function importStylesheet( page ) {=0A=

    5332. 

  5332. 	return importStylesheetURI( wgScript + =

    5333. 

  5333. '?action=3Draw&ctype=3Dtext/css&title=3D' + encodeURIComponent( =

    5334. 

  5334. page.replace(/ /g,'_') ) );=0A=

    5335. 

  5335. }=0A=

    5336. 

  5336. =0A=

    5337. 

  5337. function importStylesheetURI( url, media ) {=0A=

    5338. 

  5338. 	var l =3D document.createElement( 'link' );=0A=

    5339. 

  5339. 	l.type =3D 'text/css';=0A=

    5340. 

  5340. 	l.rel =3D 'stylesheet';=0A=

    5341. 

  5341. 	l.href =3D url;=0A=

    5342. 

  5342. 	if( media ) {=0A=

    5343. 

  5343. 		l.media =3D media;=0A=

    5344. 

  5344. 	}=0A=

    5345. 

  5345. 	document.getElementsByTagName('head')[0].appendChild( l );=0A=

    5346. 

  5346. 	return l;=0A=

    5347. 

  5347. }=0A=

    5348. 

  5348. =0A=

    5349. 

  5349. function appendCSS( text ) {=0A=

    5350. 

  5350. 	var s =3D document.createElement( 'style' );=0A=

    5351. 

  5351. 	s.type =3D 'text/css';=0A=

    5352. 

  5352. 	s.rel =3D 'stylesheet';=0A=

    5353. 

  5353. 	if ( s.styleSheet ) {=0A=

    5354. 

  5354. 		s.styleSheet.cssText =3D text; // IE=0A=

    5355. 

  5355. 	} else {=0A=

    5356. 

  5356. 		s.appendChild( document.createTextNode( text + '' ) ); // Safari =

    5357. 

  5357. sometimes borks on null=0A=

    5358. 

  5358. 	}=0A=

    5359. 

  5359. 	document.getElementsByTagName('head')[0].appendChild( s );=0A=

    5360. 

  5360. 	return s;=0A=

    5361. 

  5361. }=0A=

    5362. 

  5362. =0A=

    5363. 

  5363. // Special stylesheet links for Monobook only (see bug 14717)=0A=

    5364. 

  5364. if ( typeof stylepath !=3D 'undefined' && skin =3D=3D 'monobook' ) {=0A=

    5365. 

  5365. 	if ( opera6_bugs ) {=0A=

    5366. 

  5366. 		importStylesheetURI( stylepath + '/' + skin + '/Opera6Fixes.css' );=0A=

    5367. 

  5367. 	} else if ( opera7_bugs ) {=0A=

    5368. 

  5368. 		importStylesheetURI( stylepath + '/' + skin + '/Opera7Fixes.css' );=0A=

    5369. 

  5369. 	} else if ( opera95_bugs ) {=0A=

    5370. 

  5370. 		importStylesheetURI( stylepath + '/' + skin + '/Opera9Fixes.css' );=0A=

    5371. 

  5371. 	} else if ( ff2_bugs ) {=0A=

    5372. 

  5372. 		importStylesheetURI( stylepath + '/' + skin + '/FF2Fixes.css' );=0A=

    5373. 

  5373. 	}=0A=

    5374. 

  5374. }=0A=

    5375. 

  5375. =0A=

    5376. 

  5376. =0A=

    5377. 

  5377. if ( wgBreakFrames ) {=0A=

    5378. 

  5378. 	// Un-trap us from framesets=0A=

    5379. 

  5379. 	if ( window.top !=3D window ) {=0A=

    5380. 

  5380. 		window.top.location =3D window.location;=0A=

    5381. 

  5381. 	}=0A=

    5382. 

  5382. }=0A=

    5383. 

  5383. =0A=

    5384. 

  5384. function showTocToggle() {=0A=

    5385. 

  5385. 	if ( document.createTextNode ) {=0A=

    5386. 

  5386. 		// Uses DOM calls to avoid document.write + XHTML issues=0A=

    5387. 

  5387. =0A=

    5388. 

  5388. 		var linkHolder =3D document.getElementById( 'toctitle' );=0A=

    5389. 

  5389. 		var existingLink =3D document.getElementById( 'togglelink' );=0A=

    5390. 

  5390. 		if ( !linkHolder || existingLink ) {=0A=

    5391. 

  5391. 			// Don't add the toggle link twice=0A=

    5392. 

  5392. 			return;=0A=

    5393. 

  5393. 		}=0A=

    5394. 

  5394. =0A=

    5395. 

  5395. 		var outerSpan =3D document.createElement( 'span' );=0A=

    5396. 

  5396. 		outerSpan.className =3D 'toctoggle';=0A=

    5397. 

  5397. =0A=

    5398. 

  5398. 		var toggleLink =3D document.createElement( 'a' );=0A=

    5399. 

  5399. 		toggleLink.id =3D 'togglelink';=0A=

    5400. 

  5400. 		toggleLink.className =3D 'internal';=0A=

    5401. 

  5401. 		toggleLink.href =3D 'javascript:toggleToc()';=0A=

    5402. 

  5402. 		toggleLink.appendChild( document.createTextNode( tocHideText ) );=0A=

    5403. 

  5403. =0A=

    5404. 

  5404. 		outerSpan.appendChild( document.createTextNode( '[' ) );=0A=

    5405. 

  5405. 		outerSpan.appendChild( toggleLink );=0A=

    5406. 

  5406. 		outerSpan.appendChild( document.createTextNode( ']' ) );=0A=

    5407. 

  5407. =0A=

    5408. 

  5408. 		linkHolder.appendChild( document.createTextNode( ' ' ) );=0A=

    5409. 

  5409. 		linkHolder.appendChild( outerSpan );=0A=

    5410. 

  5410. =0A=

    5411. 

  5411. 		var cookiePos =3D document.cookie.indexOf( "hidetoc=3D" );=0A=

    5412. 

  5412. 		if ( cookiePos > -1 && document.cookie.charAt( cookiePos + 8 ) =3D=3D =

    5413. 

  5413. 1 ) {=0A=

    5414. 

  5414. 			toggleToc();=0A=

    5415. 

  5415. 		}=0A=

    5416. 

  5416. 	}=0A=

    5417. 

  5417. }=0A=

    5418. 

  5418. =0A=

    5419. 

  5419. function changeText( el, newText ) {=0A=

    5420. 

  5420. 	// Safari work around=0A=

    5421. 

  5421. 	if ( el.innerText ) {=0A=

    5422. 

  5422. 		el.innerText =3D newText;=0A=

    5423. 

  5423. 	} else if ( el.firstChild && el.firstChild.nodeValue ) {=0A=

    5424. 

  5424. 		el.firstChild.nodeValue =3D newText;=0A=

    5425. 

  5425. 	}=0A=

    5426. 

  5426. }=0A=

    5427. 

  5427. =0A=

    5428. 

  5428. function toggleToc() {=0A=

    5429. 

  5429. 	var tocmain =3D document.getElementById( 'toc' );=0A=

    5430. 

  5430. 	var toc =3D =

    5431. 

  5431. document.getElementById('toc').getElementsByTagName('ul')[0];=0A=

    5432. 

  5432. 	var toggleLink =3D document.getElementById( 'togglelink' );=0A=

    5433. 

  5433. =0A=

    5434. 

  5434. 	if ( toc && toggleLink && toc.style.display =3D=3D 'none' ) {=0A=

    5435. 

  5435. 		changeText( toggleLink, tocHideText );=0A=

    5436. 

  5436. 		toc.style.display =3D 'block';=0A=

    5437. 

  5437. 		document.cookie =3D "hidetoc=3D0";=0A=

    5438. 

  5438. 		tocmain.className =3D 'toc';=0A=

    5439. 

  5439. 	} else {=0A=

    5440. 

  5440. 		changeText( toggleLink, tocShowText );=0A=

    5441. 

  5441. 		toc.style.display =3D 'none';=0A=

    5442. 

  5442. 		document.cookie =3D "hidetoc=3D1";=0A=

    5443. 

  5443. 		tocmain.className =3D 'toc tochidden';=0A=

    5444. 

  5444. 	}=0A=

    5445. 

  5445. }=0A=

    5446. 

  5446. =0A=

    5447. 

  5447. var mwEditButtons =3D [];=0A=

    5448. 

  5448. var mwCustomEditButtons =3D []; // eg to add in MediaWiki:Common.js=0A=

    5449. 

  5449. =0A=

    5450. 

  5450. function escapeQuotes( text ) {=0A=

    5451. 

  5451. 	var re =3D new RegExp( "'", "g" );=0A=

    5452. 

  5452. 	text =3D text.replace( re, "\\'" );=0A=

    5453. 

  5453. 	re =3D new RegExp( "\\n", "g" );=0A=

    5454. 

  5454. 	text =3D text.replace( re, "\\n" );=0A=

    5455. 

  5455. 	return escapeQuotesHTML( text );=0A=

    5456. 

  5456. }=0A=

    5457. 

  5457. =0A=

    5458. 

  5458. function escapeQuotesHTML( text ) {=0A=

    5459. 

  5459. 	var re =3D new RegExp( '&', "g" );=0A=

    5460. 

  5460. 	text =3D text.replace( re, "&amp;" );=0A=

    5461. 

  5461. 	re =3D new RegExp( '"', "g" );=0A=

    5462. 

  5462. 	text =3D text.replace( re, "&quot;" );=0A=

    5463. 

  5463. 	re =3D new RegExp( '<', "g" );=0A=

    5464. 

  5464. 	text =3D text.replace( re, "&lt;" );=0A=

    5465. 

  5465. 	re =3D new RegExp( '>', "g" );=0A=

    5466. 

  5466. 	text =3D text.replace( re, "&gt;" );=0A=

    5467. 

  5467. 	return text;=0A=

    5468. 

  5468. }=0A=

    5469. 

  5469. =0A=

    5470. 

  5470. /**=0A=

    5471. 

  5471.  * Set the accesskey prefix based on browser detection.=0A=

    5472. 

  5472.  */=0A=

    5473. 

  5473. var tooltipAccessKeyPrefix =3D 'alt-';=0A=

    5474. 

  5474. if ( is_opera ) {=0A=

    5475. 

  5475. 	tooltipAccessKeyPrefix =3D 'shift-esc-';=0A=

    5476. 

  5476. } else if ( !is_safari_win && is_safari && webkit_version > 526 ) {=0A=

    5477. 

  5477. 	tooltipAccessKeyPrefix =3D 'ctrl-alt-';=0A=

    5478. 

  5478. } else if ( !is_safari_win && ( is_safari=0A=

    5479. 

  5479. 		|| clientPC.indexOf('mac') !=3D -1=0A=

    5480. 

  5480. 		|| clientPC.indexOf('konqueror') !=3D -1 ) ) {=0A=

    5481. 

  5481. 	tooltipAccessKeyPrefix =3D 'ctrl-';=0A=

    5482. 

  5482. } else if ( is_ff2 ) {=0A=

    5483. 

  5483. 	tooltipAccessKeyPrefix =3D 'alt-shift-';=0A=

    5484. 

  5484. }=0A=

    5485. 

  5485. var tooltipAccessKeyRegexp =3D /\[(ctrl-)?(alt-)?(shift-)?(esc-)?(.)\]$/;=0A=

    5486. 

  5486. =0A=

    5487. 

  5487. /**=0A=

    5488. 

  5488.  * Add the appropriate prefix to the accesskey shown in the tooltip.=0A=

    5489. 

  5489.  * If the nodeList parameter is given, only those nodes are updated;=0A=

    5490. 

  5490.  * otherwise, all the nodes that will probably have accesskeys by=0A=

    5491. 

  5491.  * default are updated.=0A=

    5492. 

  5492.  *=0A=

    5493. 

  5493.  * @param Array nodeList -- list of elements to update=0A=

    5494. 

  5494.  */=0A=

    5495. 

  5495. function updateTooltipAccessKeys( nodeList ) {=0A=

    5496. 

  5496. 	if ( !nodeList ) {=0A=

    5497. 

  5497. 		// Rather than scan all links on the whole page, we can just scan these=0A=

    5498. 

  5498. 		// containers which contain the relevant links. This is really just an=0A=

    5499. 

  5499. 		// optimization technique.=0A=

    5500. 

  5500. 		var linkContainers =3D [=0A=

    5501. 

  5501. 			'column-one', // Monobook and Modern=0A=

    5502. 

  5502. 			'mw-head', 'mw-panel', 'p-logo' // Vector=0A=

    5503. 

  5503. 		];=0A=

    5504. 

  5504. 		for ( var i in linkContainers ) {=0A=

    5505. 

  5505. 			var linkContainer =3D document.getElementById( linkContainers[i] );=0A=

    5506. 

  5506. 			if ( linkContainer ) {=0A=

    5507. 

  5507. 				updateTooltipAccessKeys( linkContainer.getElementsByTagName( 'a' ) );=0A=

    5508. 

  5508. 			}=0A=

    5509. 

  5509. 		}=0A=

    5510. 

  5510. 		// these are rare enough that no such optimization is needed=0A=

    5511. 

  5511. 		updateTooltipAccessKeys( document.getElementsByTagName( 'input' ) );=0A=

    5512. 

  5512. 		updateTooltipAccessKeys( document.getElementsByTagName( 'label' ) );=0A=

    5513. 

  5513. 		return;=0A=

    5514. 

  5514. 	}=0A=

    5515. 

  5515. =0A=

    5516. 

  5516. 	for ( var i =3D 0; i < nodeList.length; i++ ) {=0A=

    5517. 

  5517. 		var element =3D nodeList[i];=0A=

    5518. 

  5518. 		var tip =3D element.getAttribute( 'title' );=0A=

    5519. 

  5519. 		if ( tip && tooltipAccessKeyRegexp.exec( tip ) ) {=0A=

    5520. 

  5520. 			tip =3D tip.replace(tooltipAccessKeyRegexp,=0A=

    5521. 

  5521. 					  '[' + tooltipAccessKeyPrefix + "$5]");=0A=

    5522. 

  5522. 			element.setAttribute( 'title', tip );=0A=

    5523. 

  5523. 		}=0A=

    5524. 

  5524. 	}=0A=

    5525. 

  5525. }=0A=

    5526. 

  5526. =0A=

    5527. 

  5527. /**=0A=

    5528. 

  5528.  * Add a link to one of the portlet menus on the page, including:=0A=

    5529. 

  5529.  *=0A=

    5530. 

  5530.  * p-cactions: Content actions (shown as tabs above the main content in =

    5531. 

  5531. Monobook)=0A=

    5532. 

  5532.  * p-personal: Personal tools (shown at the top right of the page in =

    5533. 

  5533. Monobook)=0A=

    5534. 

  5534.  * p-navigation: Navigation=0A=

    5535. 

  5535.  * p-tb: Toolbox=0A=

    5536. 

  5536.  *=0A=

    5537. 

  5537.  * This function exists for the convenience of custom JS authors.  All=0A=

    5538. 

  5538.  * but the first three parameters are optional, though providing at=0A=

    5539. 

  5539.  * least an id and a tooltip is recommended.=0A=

    5540. 

  5540.  *=0A=

    5541. 

  5541.  * By default the new link will be added to the end of the list.  To=0A=

    5542. 

  5542.  * add the link before a given existing item, pass the DOM node of=0A=

    5543. 

  5543.  * that item (easily obtained with document.getElementById()) as the=0A=

    5544. 

  5544.  * nextnode parameter; to add the link _after_ an existing item, pass=0A=

    5545. 

  5545.  * the node's nextSibling instead.=0A=

    5546. 

  5546.  *=0A=

    5547. 

  5547.  * @param String portlet -- id of the target portlet ("p-cactions", =

    5548. 

  5548. "p-personal", "p-navigation" or "p-tb")=0A=

    5549. 

  5549.  * @param String href -- link URL=0A=

    5550. 

  5550.  * @param String text -- link text (will be automatically lowercased by =

    5551. 

  5551. CSS for p-cactions in Monobook)=0A=

    5552. 

  5552.  * @param String id -- id of the new item, should be unique and =

    5553. 

  5553. preferably have the appropriate prefix ("ca-", "pt-", "n-" or "t-")=0A=

    5554. 

  5554.  * @param String tooltip -- text to show when hovering over the link, =

    5555. 

  5555. without accesskey suffix=0A=

    5556. 

  5556.  * @param String accesskey -- accesskey to activate this link (one =

    5557. 

  5557. character, try to avoid conflicts)=0A=

    5558. 

  5558.  * @param Node nextnode -- the DOM node before which the new item should =

    5559. 

  5559. be added, should be another item in the same list=0A=

    5560. 

  5560.  *=0A=

    5561. 

  5561.  * @return Node -- the DOM node of the new item (an LI element) or null=0A=

    5562. 

  5562.  */=0A=

    5563. 

  5563. function addPortletLink( portlet, href, text, id, tooltip, accesskey, =

    5564. 

  5564. nextnode ) {=0A=

    5565. 

  5565. 	var root =3D document.getElementById( portlet );=0A=

    5566. 

  5566. 	if ( !root ) {=0A=

    5567. 

  5567. 		return null;=0A=

    5568. 

  5568. 	}=0A=

    5569. 

  5569. 	var node =3D root.getElementsByTagName( 'ul' )[0];=0A=

    5570. 

  5570. 	if ( !node ) {=0A=

    5571. 

  5571. 		return null;=0A=

    5572. 

  5572. 	}=0A=

    5573. 

  5573. =0A=

    5574. 

  5574. 	// unhide portlet if it was hidden before=0A=

    5575. 

  5575. 	root.className =3D root.className.replace( /(^| )emptyPortlet( |$)/, =

    5576. 

  5576. "$2" );=0A=

    5577. 

  5577. =0A=

    5578. 

  5578. 	var span =3D document.createElement( 'span' );=0A=

    5579. 

  5579. 	span.appendChild( document.createTextNode( text ) );=0A=

    5580. 

  5580. =0A=

    5581. 

  5581. 	var link =3D document.createElement( 'a' );=0A=

    5582. 

  5582. 	link.appendChild( span );=0A=

    5583. 

  5583. 	link.href =3D href;=0A=

    5584. 

  5584. =0A=

    5585. 

  5585. 	var item =3D document.createElement( 'li' );=0A=

    5586. 

  5586. 	item.appendChild( link );=0A=

    5587. 

  5587. 	if ( id ) {=0A=

    5588. 

  5588. 		item.id =3D id;=0A=

    5589. 

  5589. 	}=0A=

    5590. 

  5590. =0A=

    5591. 

  5591. 	if ( accesskey ) {=0A=

    5592. 

  5592. 		link.setAttribute( 'accesskey', accesskey );=0A=

    5593. 

  5593. 		tooltip +=3D ' [' + accesskey + ']';=0A=

    5594. 

  5594. 	}=0A=

    5595. 

  5595. 	if ( tooltip ) {=0A=

    5596. 

  5596. 		link.setAttribute( 'title', tooltip );=0A=

    5597. 

  5597. 	}=0A=

    5598. 

  5598. 	if ( accesskey && tooltip ) {=0A=

    5599. 

  5599. 		updateTooltipAccessKeys( new Array( link ) );=0A=

    5600. 

  5600. 	}=0A=

    5601. 

  5601. =0A=

    5602. 

  5602. 	if ( nextnode && nextnode.parentNode =3D=3D node ) {=0A=

    5603. 

  5603. 		node.insertBefore( item, nextnode );=0A=

    5604. 

  5604. 	} else {=0A=

    5605. 

  5605. 		node.appendChild( item );  // IE compatibility (?)=0A=

    5606. 

  5606. 	}=0A=

    5607. 

  5607. =0A=

    5608. 

  5608. 	return item;=0A=

    5609. 

  5609. }=0A=

    5610. 

  5610. =0A=

    5611. 

  5611. function getInnerText( el ) {=0A=

    5612. 

  5612. 	if ( typeof el =3D=3D 'string' ) {=0A=

    5613. 

  5613. 		return el;=0A=

    5614. 

  5614. 	}=0A=

    5615. 

  5615. 	if ( typeof el =3D=3D 'undefined' ) {=0A=

    5616. 

  5616. 		return el;=0A=

    5617. 

  5617. 	}=0A=

    5618. 

  5618. 	if ( el.textContent ) {=0A=

    5619. 

  5619. 		return el.textContent; // not needed but it is faster=0A=

    5620. 

  5620. 	}=0A=

    5621. 

  5621. 	if ( el.innerText ) {=0A=

    5622. 

  5622. 		return el.innerText; // IE doesn't have textContent=0A=

    5623. 

  5623. 	}=0A=

    5624. 

  5624. 	var str =3D '';=0A=

    5625. 

  5625. =0A=

    5626. 

  5626. 	var cs =3D el.childNodes;=0A=

    5627. 

  5627. 	var l =3D cs.length;=0A=

    5628. 

  5628. 	for ( var i =3D 0; i < l; i++ ) {=0A=

    5629. 

  5629. 		switch ( cs[i].nodeType ) {=0A=

    5630. 

  5630. 			case 1: // ELEMENT_NODE=0A=

    5631. 

  5631. 				str +=3D ts_getInnerText( cs[i] );=0A=

    5632. 

  5632. 				break;=0A=

    5633. 

  5633. 			case 3:	// TEXT_NODE=0A=

    5634. 

  5634. 				str +=3D cs[i].nodeValue;=0A=

    5635. 

  5635. 				break;=0A=

    5636. 

  5636. 		}=0A=

    5637. 

  5637. 	}=0A=

    5638. 

  5638. 	return str;=0A=

    5639. 

  5639. }=0A=

    5640. 

  5640. =0A=

    5641. 

  5641. /* Dummy for deprecated function */=0A=

    5642. 

  5642. window.ta =3D [];=0A=

    5643. 

  5643. function akeytt( doId ) {=0A=

    5644. 

  5644. }=0A=

    5645. 

  5645. =0A=

    5646. 

  5646. var checkboxes;=0A=

    5647. 

  5647. var lastCheckbox;=0A=

    5648. 

  5648. =0A=

    5649. 

  5649. function setupCheckboxShiftClick() {=0A=

    5650. 

  5650. 	checkboxes =3D [];=0A=

    5651. 

  5651. 	lastCheckbox =3D null;=0A=

    5652. 

  5652. 	var inputs =3D document.getElementsByTagName( 'input' );=0A=

    5653. 

  5653. 	addCheckboxClickHandlers( inputs );=0A=

    5654. 

  5654. }=0A=

    5655. 

  5655. =0A=

    5656. 

  5656. function addCheckboxClickHandlers( inputs, start ) {=0A=

    5657. 

  5657. 	if ( !start ) {=0A=

    5658. 

  5658. 		start =3D 0;=0A=

    5659. 

  5659. 	}=0A=

    5660. 

  5660. =0A=

    5661. 

  5661. 	var finish =3D start + 250;=0A=

    5662. 

  5662. 	if ( finish > inputs.length ) {=0A=

    5663. 

  5663. 		finish =3D inputs.length;=0A=

    5664. 

  5664. 	}=0A=

    5665. 

  5665. =0A=

    5666. 

  5666. 	for ( var i =3D start; i < finish; i++ ) {=0A=

    5667. 

  5667. 		var cb =3D inputs[i];=0A=

    5668. 

  5668. 		if ( !cb.type || cb.type.toLowerCase() !=3D 'checkbox' ) {=0A=

    5669. 

  5669. 			continue;=0A=

    5670. 

  5670. 		}=0A=

    5671. 

  5671. 		var end =3D checkboxes.length;=0A=

    5672. 

  5672. 		checkboxes[end] =3D cb;=0A=

    5673. 

  5673. 		cb.index =3D end;=0A=

    5674. 

  5674. 		cb.onclick =3D checkboxClickHandler;=0A=

    5675. 

  5675. 	}=0A=

    5676. 

  5676. =0A=

    5677. 

  5677. 	if ( finish < inputs.length ) {=0A=

    5678. 

  5678. 		setTimeout( function() {=0A=

    5679. 

  5679. 			addCheckboxClickHandlers( inputs, finish );=0A=

    5680. 

  5680. 		}, 200 );=0A=

    5681. 

  5681. 	}=0A=

    5682. 

  5682. }=0A=

    5683. 

  5683. =0A=

    5684. 

  5684. function checkboxClickHandler( e ) {=0A=

    5685. 

  5685. 	if ( typeof e =3D=3D 'undefined' ) {=0A=

    5686. 

  5686. 		e =3D window.event;=0A=

    5687. 

  5687. 	}=0A=

    5688. 

  5688. 	if ( !e.shiftKey || lastCheckbox =3D=3D=3D null ) {=0A=

    5689. 

  5689. 		lastCheckbox =3D this.index;=0A=

    5690. 

  5690. 		return true;=0A=

    5691. 

  5691. 	}=0A=

    5692. 

  5692. 	var endState =3D this.checked;=0A=

    5693. 

  5693. 	var start, finish;=0A=

    5694. 

  5694. 	if ( this.index < lastCheckbox ) {=0A=

    5695. 

  5695. 		start =3D this.index + 1;=0A=

    5696. 

  5696. 		finish =3D lastCheckbox;=0A=

    5697. 

  5697. 	} else {=0A=

    5698. 

  5698. 		start =3D lastCheckbox;=0A=

    5699. 

  5699. 		finish =3D this.index - 1;=0A=

    5700. 

  5700. 	}=0A=

    5701. 

  5701. 	for ( var i =3D start; i <=3D finish; ++i ) {=0A=

    5702. 

  5702. 		checkboxes[i].checked =3D endState;=0A=

    5703. 

  5703. 		if( i > start && typeof checkboxes[i].onchange =3D=3D 'function' ) {=0A=

    5704. 

  5704. 			checkboxes[i].onchange(); // fire triggers=0A=

    5705. 

  5705. 		}=0A=

    5706. 

  5706. 	}=0A=

    5707. 

  5707. 	lastCheckbox =3D this.index;=0A=

    5708. 

  5708. 	return true;=0A=

    5709. 

  5709. }=0A=

    5710. 

  5710. =0A=

    5711. 

  5711. =0A=

    5712. 

  5712. /*=0A=

    5713. 

  5713. 	Written by Jonathan Snook, http://www.snook.ca/jonathan=0A=

    5714. 

  5714. 	Add-ons by Robert Nyman, http://www.robertnyman.com=0A=

    5715. 

  5715. 	Author says "The credit comment is all it takes, no license. Go crazy =

    5716. 

  5716. with it!:-)"=0A=

    5717. 

  5717. 	From =

    5718. 

  5718. http://www.robertnyman.com/2005/11/07/the-ultimate-getelementsbyclassname=

    5719. 

  5719. /=0A=

    5720. 

  5720. */=0A=

    5721. 

  5721. function getElementsByClassName( oElm, strTagName, oClassNames ) {=0A=

    5722. 

  5722. 	var arrReturnElements =3D new Array();=0A=

    5723. 

  5723. 	if ( typeof( oElm.getElementsByClassName ) =3D=3D 'function' ) {=0A=

    5724. 

  5724. 		/* Use a native implementation where possible FF3, Saf3.2, Opera 9.5 */=0A=

    5725. 

  5725. 		var arrNativeReturn =3D oElm.getElementsByClassName( oClassNames );=0A=

    5726. 

  5726. 		if ( strTagName =3D=3D '*' ) {=0A=

    5727. 

  5727. 			return arrNativeReturn;=0A=

    5728. 

  5728. 		}=0A=

    5729. 

  5729. 		for ( var h =3D 0; h < arrNativeReturn.length; h++ ) {=0A=

    5730. 

  5730. 			if( arrNativeReturn[h].tagName.toLowerCase() =3D=3D =

    5731. 

  5731. strTagName.toLowerCase() ) {=0A=

    5732. 

  5732. 				arrReturnElements[arrReturnElements.length] =3D arrNativeReturn[h];=0A=

    5733. 

  5733. 			}=0A=

    5734. 

  5734. 		}=0A=

    5735. 

  5735. 		return arrReturnElements;=0A=

    5736. 

  5736. 	}=0A=

    5737. 

  5737. 	var arrElements =3D ( strTagName =3D=3D '*' && oElm.all ) ? oElm.all : =

    5738. 

  5738. oElm.getElementsByTagName( strTagName );=0A=

    5739. 

  5739. 	var arrRegExpClassNames =3D new Array();=0A=

    5740. 

  5740. 	if( typeof oClassNames =3D=3D 'object' ) {=0A=

    5741. 

  5741. 		for( var i =3D 0; i < oClassNames.length; i++ ) {=0A=

    5742. 

  5742. 			arrRegExpClassNames[arrRegExpClassNames.length] =3D=0A=

    5743. 

  5743. 				new RegExp("(^|\\s)" + oClassNames[i].replace(/\-/g, "\\-") + =

    5744. 

  5744. "(\\s|$)");=0A=

    5745. 

  5745. 		}=0A=

    5746. 

  5746. 	} else {=0A=

    5747. 

  5747. 		arrRegExpClassNames[arrRegExpClassNames.length] =3D=0A=

    5748. 

  5748. 			new RegExp("(^|\\s)" + oClassNames.replace(/\-/g, "\\-") + "(\\s|$)");=0A=

    5749. 

  5749. 	}=0A=

    5750. 

  5750. 	var oElement;=0A=

    5751. 

  5751. 	var bMatchesAll;=0A=

    5752. 

  5752. 	for( var j =3D 0; j < arrElements.length; j++ ) {=0A=

    5753. 

  5753. 		oElement =3D arrElements[j];=0A=

    5754. 

  5754. 		bMatchesAll =3D true;=0A=

    5755. 

  5755. 		for( var k =3D 0; k < arrRegExpClassNames.length; k++ ) {=0A=

    5756. 

  5756. 			if( !arrRegExpClassNames[k].test( oElement.className ) ) {=0A=

    5757. 

  5757. 				bMatchesAll =3D false;=0A=

    5758. 

  5758. 				break;=0A=

    5759. 

  5759. 			}=0A=

    5760. 

  5760. 		}=0A=

    5761. 

  5761. 		if( bMatchesAll ) {=0A=

    5762. 

  5762. 			arrReturnElements[arrReturnElements.length] =3D oElement;=0A=

    5763. 

  5763. 		}=0A=

    5764. 

  5764. 	}=0A=

    5765. 

  5765. 	return ( arrReturnElements );=0A=

    5766. 

  5766. }=0A=

    5767. 

  5767. =0A=

    5768. 

  5768. function redirectToFragment( fragment ) {=0A=

    5769. 

  5769. 	var match =3D navigator.userAgent.match(/AppleWebKit\/(\d+)/);=0A=

    5770. 

  5770. 	if ( match ) {=0A=

    5771. 

  5771. 		var webKitVersion =3D parseInt( match[1] );=0A=

    5772. 

  5772. 		if ( webKitVersion < 420 ) {=0A=

    5773. 

  5773. 			// Released Safari w/ WebKit 418.9.1 messes up horribly=0A=

    5774. 

  5774. 			// Nightlies of 420+ are ok=0A=

    5775. 

  5775. 			return;=0A=

    5776. 

  5776. 		}=0A=

    5777. 

  5777. 	}=0A=

    5778. 

  5778. 	if ( is_gecko ) {=0A=

    5779. 

  5779. 		// Mozilla needs to wait until after load, otherwise the window =

    5780. 

  5780. doesn't scroll=0A=

    5781. 

  5781. 		addOnloadHook(function() {=0A=

    5782. 

  5782. 			if ( window.location.hash =3D=3D '' ) {=0A=

    5783. 

  5783. 				window.location.hash =3D fragment;=0A=

    5784. 

  5784. 			}=0A=

    5785. 

  5785. 		});=0A=

    5786. 

  5786. 	} else {=0A=

    5787. 

  5787. 		if ( window.location.hash =3D=3D '' ) {=0A=

    5788. 

  5788. 			window.location.hash =3D fragment;=0A=

    5789. 

  5789. 		}=0A=

    5790. 

  5790. 	}=0A=

    5791. 

  5791. }=0A=

    5792. 

  5792. =0A=

    5793. 

  5793. /*=0A=

    5794. 

  5794.  * Table sorting script based on one (c) 1997-2006 Stuart Langridge and =

    5795. 

  5795. Joost=0A=

    5796. 

  5796.  * de Valk:=0A=

    5797. 

  5797.  * http://www.joostdevalk.nl/code/sortable-table/=0A=

    5798. 

  5798.  * http://www.kryogenix.org/code/browser/sorttable/=0A=

    5799. 

  5799.  *=0A=

    5800. 

  5800.  * @todo don't break on colspans/rowspans (bug 8028)=0A=

    5801. 

  5801.  * @todo language-specific digit grouping/decimals (bug 8063)=0A=

    5802. 

  5802.  * @todo support all accepted date formats (bug 8226)=0A=

    5803. 

  5803.  */=0A=

    5804. 

  5804. =0A=

    5805. 

  5805. var ts_image_path =3D stylepath + '/common/images/';=0A=

    5806. 

  5806. var ts_image_up =3D 'sort_up.gif';=0A=

    5807. 

  5807. var ts_image_down =3D 'sort_down.gif';=0A=

    5808. 

  5808. var ts_image_none =3D 'sort_none.gif';=0A=

    5809. 

  5809. var ts_europeandate =3D wgContentLanguage !=3D 'en'; // The =

    5810. 

  5810. non-American-inclined can change to "true"=0A=

    5811. 

  5811. var ts_alternate_row_colors =3D false;=0A=

    5812. 

  5812. var ts_number_transform_table =3D null;=0A=

    5813. 

  5813. var ts_number_regex =3D null;=0A=

    5814. 

  5814. =0A=

    5815. 

  5815. function sortables_init() {=0A=

    5816. 

  5816. 	var idnum =3D 0;=0A=

    5817. 

  5817. 	// Find all tables with class sortable and make them sortable=0A=

    5818. 

  5818. 	var tables =3D getElementsByClassName( document, 'table', 'sortable' );=0A=

    5819. 

  5819. 	for ( var ti =3D 0; ti < tables.length ; ti++ ) {=0A=

    5820. 

  5820. 		if ( !tables[ti].id ) {=0A=

    5821. 

  5821. 			tables[ti].setAttribute( 'id', 'sortable_table_id_' + idnum );=0A=

    5822. 

  5822. 			++idnum;=0A=

    5823. 

  5823. 		}=0A=

    5824. 

  5824. 		ts_makeSortable( tables[ti] );=0A=

    5825. 

  5825. 	}=0A=

    5826. 

  5826. }=0A=

    5827. 

  5827. =0A=

    5828. 

  5828. function ts_makeSortable( table ) {=0A=

    5829. 

  5829. 	var firstRow;=0A=

    5830. 

  5830. 	if ( table.rows && table.rows.length > 0 ) {=0A=

    5831. 

  5831. 		if ( table.tHead && table.tHead.rows.length > 0 ) {=0A=

    5832. 

  5832. 			firstRow =3D table.tHead.rows[table.tHead.rows.length-1];=0A=

    5833. 

  5833. 		} else {=0A=

    5834. 

  5834. 			firstRow =3D table.rows[0];=0A=

    5835. 

  5835. 		}=0A=

    5836. 

  5836. 	}=0A=

    5837. 

  5837. 	if ( !firstRow ) {=0A=

    5838. 

  5838. 		return;=0A=

    5839. 

  5839. 	}=0A=

    5840. 

  5840. =0A=

    5841. 

  5841. 	// We have a first row: assume it's the header, and make its contents =

    5842. 

  5842. clickable links=0A=

    5843. 

  5843. 	for ( var i =3D 0; i < firstRow.cells.length; i++ ) {=0A=

    5844. 

  5844. 		var cell =3D firstRow.cells[i];=0A=

    5845. 

  5845. 		if ( (' ' + cell.className + ' ').indexOf(' unsortable ') =3D=3D -1 ) {=0A=

    5846. 

  5846. 			cell.innerHTML +=3D '<a href=3D"#" class=3D"sortheader" '=0A=

    5847. 

  5847. 				+ 'onclick=3D"ts_resortTable(this);return false;">'=0A=

    5848. 

  5848. 				+ '<span class=3D"sortarrow">'=0A=

    5849. 

  5849. 				+ '<img src=3D"'=0A=

    5850. 

  5850. 				+ ts_image_path=0A=

    5851. 

  5851. 				+ ts_image_none=0A=

    5852. 

  5852. 				+ '" alt=3D"&darr;"/></span></a>';=0A=

    5853. 

  5853. 		}=0A=

    5854. 

  5854. 	}=0A=

    5855. 

  5855. 	if ( ts_alternate_row_colors ) {=0A=

    5856. 

  5856. 		ts_alternate( table );=0A=

    5857. 

  5857. 	}=0A=

    5858. 

  5858. }=0A=

    5859. 

  5859. =0A=

    5860. 

  5860. function ts_getInnerText( el ) {=0A=

    5861. 

  5861. 	return getInnerText( el );=0A=

    5862. 

  5862. }=0A=

    5863. 

  5863. =0A=

    5864. 

  5864. function ts_resortTable( lnk ) {=0A=

    5865. 

  5865. 	// get the span=0A=

    5866. 

  5866. 	var span =3D lnk.getElementsByTagName('span')[0];=0A=

    5867. 

  5867. =0A=

    5868. 

  5868. 	var td =3D lnk.parentNode;=0A=

    5869. 

  5869. 	var tr =3D td.parentNode;=0A=

    5870. 

  5870. 	var column =3D td.cellIndex;=0A=

    5871. 

  5871. =0A=

    5872. 

  5872. 	var table =3D tr.parentNode;=0A=

    5873. 

  5873. 	while ( table && !( table.tagName && table.tagName.toLowerCase() =3D=3D =

    5874. 

  5874. 'table' ) ) {=0A=

    5875. 

  5875. 		table =3D table.parentNode;=0A=

    5876. 

  5876. 	}=0A=

    5877. 

  5877. 	if ( !table ) {=0A=

    5878. 

  5878. 		return;=0A=

    5879. 

  5879. 	}=0A=

    5880. 

  5880. =0A=

    5881. 

  5881. 	if ( table.rows.length <=3D 1 ) {=0A=

    5882. 

  5882. 		return;=0A=

    5883. 

  5883. 	}=0A=

    5884. 

  5884. =0A=

    5885. 

  5885. 	// Generate the number transform table if it's not done already=0A=

    5886. 

  5886. 	if ( ts_number_transform_table =3D=3D=3D null ) {=0A=

    5887. 

  5887. 		ts_initTransformTable();=0A=

    5888. 

  5888. 	}=0A=

    5889. 

  5889. =0A=

    5890. 

  5890. 	// Work out a type for the column=0A=

    5891. 

  5891. 	// Skip the first row if that's where the headings are=0A=

    5892. 

  5892. 	var rowStart =3D ( table.tHead && table.tHead.rows.length > 0 ? 0 : 1 );=0A=

    5893. 

  5893. =0A=

    5894. 

  5894. 	var itm =3D '';=0A=

    5895. 

  5895. 	for ( var i =3D rowStart; i < table.rows.length; i++ ) {=0A=

    5896. 

  5896. 		if ( table.rows[i].cells.length > column ) {=0A=

    5897. 

  5897. 			itm =3D ts_getInnerText(table.rows[i].cells[column]);=0A=

    5898. 

  5898. 			itm =3D itm.replace(/^[\s\xa0]+/, '').replace(/[\s\xa0]+$/, '');=0A=

    5899. 

  5899. 			if ( itm !=3D '' ) {=0A=

    5900. 

  5900. 				break;=0A=

    5901. 

  5901. 			}=0A=

    5902. 

  5902. 		}=0A=

    5903. 

  5903. 	}=0A=

    5904. 

  5904. =0A=

    5905. 

  5905. 	// TODO: bug 8226, localised date formats=0A=

    5906. 

  5906. 	var sortfn =3D ts_sort_generic;=0A=

    5907. 

  5907. 	var preprocessor =3D ts_toLowerCase;=0A=

    5908. 

  5908. 	if ( /^\d\d[\/. -][a-zA-Z]{3}[\/. -]\d\d\d\d$/.test( itm ) ) {=0A=

    5909. 

  5909. 		preprocessor =3D ts_dateToSortKey;=0A=

    5910. 

  5910. 	} else if ( /^\d\d[\/.-]\d\d[\/.-]\d\d\d\d$/.test( itm ) ) {=0A=

    5911. 

  5911. 		preprocessor =3D ts_dateToSortKey;=0A=

    5912. 

  5912. 	} else if ( /^\d\d[\/.-]\d\d[\/.-]\d\d$/.test( itm ) ) {=0A=

    5913. 

  5913. 		preprocessor =3D ts_dateToSortKey;=0A=

    5914. 

  5914. 		// (minus sign)([pound dollar euro yen currency]|cents)=0A=

    5915. 

  5915. 	} else if ( /(^([-\u2212] =

    5916. 

  5916. *)?[\u00a3$\u20ac\u00a4\u00a5]|\u00a2$)/.test( itm ) ) {=0A=

    5917. 

  5917. 		preprocessor =3D ts_currencyToSortKey;=0A=

    5918. 

  5918. 	} else if ( ts_number_regex.test( itm ) ) {=0A=

    5919. 

  5919. 		preprocessor =3D ts_parseFloat;=0A=

    5920. 

  5920. 	}=0A=

    5921. 

  5921. =0A=

    5922. 

  5922. 	var reverse =3D ( span.getAttribute( 'sortdir' ) =3D=3D 'down' );=0A=

    5923. 

  5923. =0A=

    5924. 

  5924. 	var newRows =3D new Array();=0A=

    5925. 

  5925. 	var staticRows =3D new Array();=0A=

    5926. 

  5926. 	for ( var j =3D rowStart; j < table.rows.length; j++ ) {=0A=

    5927. 

  5927. 		var row =3D table.rows[j];=0A=

    5928. 

  5928. 		if( (' ' + row.className + ' ').indexOf(' unsortable ') < 0 ) {=0A=

    5929. 

  5929. 			var keyText =3D ts_getInnerText( row.cells[column] );=0A=

    5930. 

  5930. 			if( keyText =3D=3D=3D undefined ) {=0A=

    5931. 

  5931. 				keyText =3D ''; =0A=

    5932. 

  5932. 			}=0A=

    5933. 

  5933. 			var oldIndex =3D ( reverse ? -j : j );=0A=

    5934. 

  5934. 			var preprocessed =3D preprocessor( keyText.replace(/^[\s\xa0]+/, =

    5935. 

  5935. '').replace(/[\s\xa0]+$/, '') );=0A=

    5936. 

  5936. =0A=

    5937. 

  5937. 			newRows[newRows.length] =3D new Array( row, preprocessed, oldIndex );=0A=

    5938. 

  5938. 		} else {=0A=

    5939. 

  5939. 			staticRows[staticRows.length] =3D new Array( row, false, j-rowStart );=0A=

    5940. 

  5940. 		}=0A=

    5941. 

  5941. 	}=0A=

    5942. 

  5942. =0A=

    5943. 

  5943. 	newRows.sort( sortfn );=0A=

    5944. 

  5944. =0A=

    5945. 

  5945. 	var arrowHTML;=0A=

    5946. 

  5946. 	if ( reverse ) {=0A=

    5947. 

  5947. 		arrowHTML =3D '<img src=3D"' + ts_image_path + ts_image_down + '" =

    5948. 

  5948. alt=3D"&darr;"/>';=0A=

    5949. 

  5949. 		newRows.reverse();=0A=

    5950. 

  5950. 		span.setAttribute( 'sortdir', 'up' );=0A=

    5951. 

  5951. 	} else {=0A=

    5952. 

  5952. 		arrowHTML =3D '<img src=3D"' + ts_image_path + ts_image_up + '" =

    5953. 

  5953. alt=3D"&uarr;"/>';=0A=

    5954. 

  5954. 		span.setAttribute( 'sortdir', 'down' );=0A=

    5955. 

  5955. 	}=0A=

    5956. 

  5956. =0A=

    5957. 

  5957. 	for ( var i =3D 0; i < staticRows.length; i++ ) {=0A=

    5958. 

  5958. 		var row =3D staticRows[i];=0A=

    5959. 

  5959. 		newRows.splice( row[2], 0, row );=0A=

    5960. 

  5960. 	}=0A=

    5961. 

  5961. =0A=

    5962. 

  5962. 	// We appendChild rows that already exist to the tbody, so it moves =

    5963. 

  5963. them rather than creating new ones=0A=

    5964. 

  5964. 	// don't do sortbottom rows=0A=

    5965. 

  5965. 	for ( var i =3D 0; i < newRows.length; i++ ) {=0A=

    5966. 

  5966. 		if ( ( ' ' + newRows[i][0].className + ' ').indexOf(' sortbottom ') =

    5967. 

  5967. =3D=3D -1 ) {=0A=

    5968. 

  5968. 			table.tBodies[0].appendChild( newRows[i][0] );=0A=

    5969. 

  5969. 		}=0A=

    5970. 

  5970. 	}=0A=

    5971. 

  5971. 	// do sortbottom rows only=0A=

    5972. 

  5972. 	for ( var i =3D 0; i < newRows.length; i++ ) {=0A=

    5973. 

  5973. 		if ( ( ' ' + newRows[i][0].className + ' ').indexOf(' sortbottom ') =

    5974. 

  5974. !=3D -1 ) {=0A=

    5975. 

  5975. 			table.tBodies[0].appendChild( newRows[i][0] );=0A=

    5976. 

  5976. 		}=0A=

    5977. 

  5977. 	}=0A=

    5978. 

  5978. =0A=

    5979. 

  5979. 	// Delete any other arrows there may be showing=0A=

    5980. 

  5980. 	var spans =3D getElementsByClassName( tr, 'span', 'sortarrow' );=0A=

    5981. 

  5981. 	for ( var i =3D 0; i < spans.length; i++ ) {=0A=

    5982. 

  5982. 		spans[i].innerHTML =3D '<img src=3D"' + ts_image_path + ts_image_none =

    5983. 

  5983. + '" alt=3D"&darr;"/>';=0A=

    5984. 

  5984. 	}=0A=

    5985. 

  5985. 	span.innerHTML =3D arrowHTML;=0A=

    5986. 

  5986. =0A=

    5987. 

  5987. 	if ( ts_alternate_row_colors ) {=0A=

    5988. 

  5988. 		ts_alternate( table );=0A=

    5989. 

  5989. 	}=0A=

    5990. 

  5990. }=0A=

    5991. 

  5991. =0A=

    5992. 

  5992. function ts_initTransformTable() {=0A=

    5993. 

  5993. 	if ( typeof wgSeparatorTransformTable =3D=3D 'undefined'=0A=

    5994. 

  5994. 			|| ( wgSeparatorTransformTable[0] =3D=3D '' && =

    5995. 

  5995. wgDigitTransformTable[2] =3D=3D '' ) )=0A=

    5996. 

  5996. 	{=0A=

    5997. 

  5997. 		digitClass =3D "[0-9,.]";=0A=

    5998. 

  5998. 		ts_number_transform_table =3D false;=0A=

    5999. 

  5999. 	} else {=0A=

    6000. 

  6000. 		ts_number_transform_table =3D {};=0A=

    6001. 

  6001. 		// Unpack the transform table=0A=

    6002. 

  6002. 		// Separators=0A=

    6003. 

  6003. 		ascii =3D wgSeparatorTransformTable[0].split("\t");=0A=

    6004. 

  6004. 		localised =3D wgSeparatorTransformTable[1].split("\t");=0A=

    6005. 

  6005. 		for ( var i =3D 0; i < ascii.length; i++ ) {=0A=

    6006. 

  6006. 			ts_number_transform_table[localised[i]] =3D ascii[i];=0A=

    6007. 

  6007. 		}=0A=

    6008. 

  6008. 		// Digits=0A=

    6009. 

  6009. 		ascii =3D wgDigitTransformTable[0].split("\t");=0A=

    6010. 

  6010. 		localised =3D wgDigitTransformTable[1].split("\t");=0A=

    6011. 

  6011. 		for ( var i =3D 0; i < ascii.length; i++ ) {=0A=

    6012. 

  6012. 			ts_number_transform_table[localised[i]] =3D ascii[i];=0A=

    6013. 

  6013. 		}=0A=

    6014. 

  6014. =0A=

    6015. 

  6015. 		// Construct regex for number identification=0A=

    6016. 

  6016. 		digits =3D ['0', '1', '2', '3', '4', '5', '6', '7', '8', '9', ',', =

    6017. 

  6017. '\\.'];=0A=

    6018. 

  6018. 		maxDigitLength =3D 1;=0A=

    6019. 

  6019. 		for ( var digit in ts_number_transform_table ) {=0A=

    6020. 

  6020. 			// Escape regex metacharacters=0A=

    6021. 

  6021. 			digits.push(=0A=

    6022. 

  6022. 				digit.replace( /[\\\\$\*\+\?\.\(\)\|\{\}\[\]\-]/,=0A=

    6023. 

  6023. 					function( s ) { return '\\' + s; } )=0A=

    6024. 

  6024. 			);=0A=

    6025. 

  6025. 			if ( digit.length > maxDigitLength ) {=0A=

    6026. 

  6026. 				maxDigitLength =3D digit.length;=0A=

    6027. 

  6027. 			}=0A=

    6028. 

  6028. 		}=0A=

    6029. 

  6029. 		if ( maxDigitLength > 1 ) {=0A=

    6030. 

  6030. 			digitClass =3D '[' + digits.join( '', digits ) + ']';=0A=

    6031. 

  6031. 		} else {=0A=

    6032. 

  6032. 			digitClass =3D '(' + digits.join( '|', digits ) + ')';=0A=

    6033. 

  6033. 		}=0A=

    6034. 

  6034. 	}=0A=

    6035. 

  6035. =0A=

    6036. 

  6036. 	// We allow a trailing percent sign, which we just strip.  This works =

    6037. 

  6037. fine=0A=

    6038. 

  6038. 	// if percents and regular numbers aren't being mixed.=0A=

    6039. 

  6039. 	ts_number_regex =3D new RegExp(=0A=

    6040. 

  6040. 		"^(" +=0A=

    6041. 

  6041. 			"[-+\u2212]?[0-9][0-9,]*(\\.[0-9,]*)?(E[-+\u2212]?[0-9][0-9,]*)?" + =

    6042. 

  6042. // Fortran-style scientific=0A=

    6043. 

  6043. 			"|" +=0A=

    6044. 

  6044. 			"[-+\u2212]?" + digitClass + "+%?" + // Generic localised=0A=

    6045. 

  6045. 		")$", "i"=0A=

    6046. 

  6046. 	);=0A=

    6047. 

  6047. }=0A=

    6048. 

  6048. =0A=

    6049. 

  6049. function ts_toLowerCase( s ) {=0A=

    6050. 

  6050. 	return s.toLowerCase();=0A=

    6051. 

  6051. }=0A=

    6052. 

  6052. =0A=

    6053. 

  6053. function ts_dateToSortKey( date ) {=0A=

    6054. 

  6054. 	// y2k notes: two digit years less than 50 are treated as 20XX, greater =

    6055. 

  6055. than 50 are treated as 19XX=0A=

    6056. 

  6056. 	if ( date.length =3D=3D 11 ) {=0A=

    6057. 

  6057. 		switch ( date.substr( 3, 3 ).toLowerCase() ) {=0A=

    6058. 

  6058. 			case 'jan':=0A=

    6059. 

  6059. 				var month =3D '01';=0A=

    6060. 

  6060. 				break;=0A=

    6061. 

  6061. 			case 'feb':=0A=

    6062. 

  6062. 				var month =3D '02';=0A=

    6063. 

  6063. 				break;=0A=

    6064. 

  6064. 			case 'mar':=0A=

    6065. 

  6065. 				var month =3D '03';=0A=

    6066. 

  6066. 				break;=0A=

    6067. 

  6067. 			case 'apr':=0A=

    6068. 

  6068. 				var month =3D '04';=0A=

    6069. 

  6069. 				break;=0A=

    6070. 

  6070. 			case 'may':=0A=

    6071. 

  6071. 				var month =3D '05';=0A=

    6072. 

  6072. 				break;=0A=

    6073. 

  6073. 			case 'jun':=0A=

    6074. 

  6074. 				var month =3D '06';=0A=

    6075. 

  6075. 				break;=0A=

    6076. 

  6076. 			case 'jul':=0A=

    6077. 

  6077. 				var month =3D '07';=0A=

    6078. 

  6078. 				break;=0A=

    6079. 

  6079. 			case 'aug':=0A=

    6080. 

  6080. 				var month =3D '08';=0A=

    6081. 

  6081. 				break;=0A=

    6082. 

  6082. 			case 'sep':=0A=

    6083. 

  6083. 				var month =3D '09';=0A=

    6084. 

  6084. 				break;=0A=

    6085. 

  6085. 			case 'oct':=0A=

    6086. 

  6086. 				var month =3D '10';=0A=

    6087. 

  6087. 				break;=0A=

    6088. 

  6088. 			case 'nov':=0A=

    6089. 

  6089. 				var month =3D '11';=0A=

    6090. 

  6090. 				break;=0A=

    6091. 

  6091. 			case 'dec':=0A=

    6092. 

  6092. 				var month =3D '12';=0A=

    6093. 

  6093. 				break;=0A=

    6094. 

  6094. 			// default: var month =3D '00';=0A=

    6095. 

  6095. 		}=0A=

    6096. 

  6096. 		return date.substr( 7, 4 ) + month + date.substr( 0, 2 );=0A=

    6097. 

  6097. 	} else if ( date.length =3D=3D 10 ) {=0A=

    6098. 

  6098. 		if ( ts_europeandate =3D=3D false ) {=0A=

    6099. 

  6099. 			return date.substr( 6, 4 ) + date.substr( 0, 2 ) + date.substr( 3, 2 =

    6100. 

  6100. );=0A=

    6101. 

  6101. 		} else {=0A=

    6102. 

  6102. 			return date.substr( 6, 4 ) + date.substr( 3, 2 ) + date.substr( 0, 2 =

    6103. 

  6103. );=0A=

    6104. 

  6104. 		}=0A=

    6105. 

  6105. 	} else if ( date.length =3D=3D 8 ) {=0A=

    6106. 

  6106. 		yr =3D date.substr( 6, 2 );=0A=

    6107. 

  6107. 		if ( parseInt( yr ) < 50 ) {=0A=

    6108. 

  6108. 			yr =3D '20' + yr;=0A=

    6109. 

  6109. 		} else {=0A=

    6110. 

  6110. 			yr =3D '19' + yr;=0A=

    6111. 

  6111. 		}=0A=

    6112. 

  6112. 		if ( ts_europeandate =3D=3D true ) {=0A=

    6113. 

  6113. 			return yr + date.substr( 3, 2 ) + date.substr( 0, 2 );=0A=

    6114. 

  6114. 		} else {=0A=

    6115. 

  6115. 			return yr + date.substr( 0, 2 ) + date.substr( 3, 2 );=0A=

    6116. 

  6116. 		}=0A=

    6117. 

  6117. 	}=0A=

    6118. 

  6118. 	return '00000000';=0A=

    6119. 

  6119. }=0A=

    6120. 

  6120. =0A=

    6121. 

  6121. function ts_parseFloat( s ) {=0A=

    6122. 

  6122. 	if ( !s ) {=0A=

    6123. 

  6123. 		return 0;=0A=

    6124. 

  6124. 	}=0A=

    6125. 

  6125. 	if ( ts_number_transform_table !=3D false ) {=0A=

    6126. 

  6126. 		var newNum =3D '', c;=0A=

    6127. 

  6127. =0A=

    6128. 

  6128. 		for ( var p =3D 0; p < s.length; p++ ) {=0A=

    6129. 

  6129. 			c =3D s.charAt( p );=0A=

    6130. 

  6130. 			if ( c in ts_number_transform_table ) {=0A=

    6131. 

  6131. 				newNum +=3D ts_number_transform_table[c];=0A=

    6132. 

  6132. 			} else {=0A=

    6133. 

  6133. 				newNum +=3D c;=0A=

    6134. 

  6134. 			}=0A=

    6135. 

  6135. 		}=0A=

    6136. 

  6136. 		s =3D newNum;=0A=

    6137. 

  6137. 	}=0A=

    6138. 

  6138. 	num =3D parseFloat( s.replace(/[, ]/g, '').replace("\u2212", '-') );=0A=

    6139. 

  6139. 	return ( isNaN( num ) ? -Infinity : num );=0A=

    6140. 

  6140. }=0A=

    6141. 

  6141. =0A=

    6142. 

  6142. function ts_currencyToSortKey( s ) {=0A=

    6143. 

  6143. 	return ts_parseFloat(s.replace(/[^-\u22120-9.,]/g,''));=0A=

    6144. 

  6144. }=0A=

    6145. 

  6145. =0A=

    6146. 

  6146. function ts_sort_generic( a, b ) {=0A=

    6147. 

  6147. 	return a[1] < b[1] ? -1 : a[1] > b[1] ? 1 : a[2] - b[2];=0A=

    6148. 

  6148. }=0A=

    6149. 

  6149. =0A=

    6150. 

  6150. function ts_alternate( table ) {=0A=

    6151. 

  6151. 	// Take object table and get all it's tbodies.=0A=

    6152. 

  6152. 	var tableBodies =3D table.getElementsByTagName( 'tbody' );=0A=

    6153. 

  6153. 	// Loop through these tbodies=0A=

    6154. 

  6154. 	for ( var i =3D 0; i < tableBodies.length; i++ ) {=0A=

    6155. 

  6155. 		// Take the tbody, and get all it's rows=0A=

    6156. 

  6156. 		var tableRows =3D tableBodies[i].getElementsByTagName( 'tr' );=0A=

    6157. 

  6157. 		// Loop through these rows=0A=

    6158. 

  6158. 		// Start at 1 because we want to leave the heading row untouched=0A=

    6159. 

  6159. 		for ( var j =3D 0; j < tableRows.length; j++ ) {=0A=

    6160. 

  6160. 			// Check if j is even, and apply classes for both possible results=0A=

    6161. 

  6161. 			var oldClasses =3D tableRows[j].className.split(' ');=0A=

    6162. 

  6162. 			var newClassName =3D '';=0A=

    6163. 

  6163. 			for ( var k =3D 0; k < oldClasses.length; k++ ) {=0A=

    6164. 

  6164. 				if ( oldClasses[k] !=3D '' && oldClasses[k] !=3D 'even' && =

    6165. 

  6165. oldClasses[k] !=3D 'odd' ) {=0A=

    6166. 

  6166. 					newClassName +=3D oldClasses[k] + ' ';=0A=

    6167. 

  6167. 				}=0A=

    6168. 

  6168. 			}=0A=

    6169. 

  6169. 			tableRows[j].className =3D newClassName + ( j % 2 =3D=3D 0 ? 'even' : =

    6170. 

  6170. 'odd' );=0A=

    6171. 

  6171. 		}=0A=

    6172. 

  6172. 	}=0A=

    6173. 

  6173. }=0A=

    6174. 

  6174. =0A=

    6175. 

  6175. /*=0A=

    6176. 

  6176.  * End of table sorting code=0A=

    6177. 

  6177.  */=0A=

    6178. 

  6178. =0A=

    6179. 

  6179. =0A=

    6180. 

  6180. /**=0A=

    6181. 

  6181.  * Add a cute little box at the top of the screen to inform the user of=0A=

    6182. 

  6182.  * something, replacing any preexisting message.=0A=

    6183. 

  6183.  *=0A=

    6184. 

  6184.  * @param String -or- Dom Object message HTML to be put inside the right =

    6185. 

  6185. div=0A=

    6186. 

  6186.  * @param String className   Used in adding a class; should be different =

    6187. 

  6187. for each=0A=

    6188. 

  6188.  *   call to allow CSS/JS to hide different boxes.  null =3D no class =

    6189. 

  6189. used.=0A=

    6190. 

  6190.  * @return Boolean       True on success, false on failure=0A=

    6191. 

  6191.  */=0A=

    6192. 

  6192. function jsMsg( message, className ) {=0A=

    6193. 

  6193. 	if ( !document.getElementById ) {=0A=

    6194. 

  6194. 		return false;=0A=

    6195. 

  6195. 	}=0A=

    6196. 

  6196. 	// We special-case skin structures provided by the software.  Skins that=0A=

    6197. 

  6197. 	// choose to abandon or significantly modify our formatting can just =

    6198. 

  6198. define=0A=

    6199. 

  6199. 	// an mw-js-message div to start with.=0A=

    6200. 

  6200. 	var messageDiv =3D document.getElementById( 'mw-js-message' );=0A=

    6201. 

  6201. 	if ( !messageDiv ) {=0A=

    6202. 

  6202. 		messageDiv =3D document.createElement( 'div' );=0A=

    6203. 

  6203. 		if ( document.getElementById( 'column-content' )=0A=

    6204. 

  6204. 		&& document.getElementById( 'content' ) ) {=0A=

    6205. 

  6205. 			// MonoBook, presumably=0A=

    6206. 

  6206. 			document.getElementById( 'content' ).insertBefore(=0A=

    6207. 

  6207. 				messageDiv,=0A=

    6208. 

  6208. 				document.getElementById( 'content' ).firstChild=0A=

    6209. 

  6209. 			);=0A=

    6210. 

  6210. 		} else if ( document.getElementById( 'content' )=0A=

    6211. 

  6211. 		&& document.getElementById( 'article' ) ) {=0A=

    6212. 

  6212. 			// Non-Monobook but still recognizable (old-style)=0A=

    6213. 

  6213. 			document.getElementById( 'article').insertBefore(=0A=

    6214. 

  6214. 				messageDiv,=0A=

    6215. 

  6215. 				document.getElementById( 'article' ).firstChild=0A=

    6216. 

  6216. 			);=0A=

    6217. 

  6217. 		} else {=0A=

    6218. 

  6218. 			return false;=0A=

    6219. 

  6219. 		}=0A=

    6220. 

  6220. 	}=0A=

    6221. 

  6221. =0A=

    6222. 

  6222. 	messageDiv.setAttribute( 'id', 'mw-js-message' );=0A=

    6223. 

  6223. 	messageDiv.style.display =3D 'block';=0A=

    6224. 

  6224. 	if( className ) {=0A=

    6225. 

  6225. 		messageDiv.setAttribute( 'class', 'mw-js-message-' + className );=0A=

    6226. 

  6226. 	}=0A=

    6227. 

  6227. =0A=

    6228. 

  6228. 	if ( typeof message =3D=3D=3D 'object' ) {=0A=

    6229. 

  6229. 		while ( messageDiv.hasChildNodes() ) { // Remove old content=0A=

    6230. 

  6230. 			messageDiv.removeChild( messageDiv.firstChild );=0A=

    6231. 

  6231. 		}=0A=

    6232. 

  6232. 		messageDiv.appendChild( message ); // Append new content=0A=

    6233. 

  6233. 	} else {=0A=

    6234. 

  6234. 		messageDiv.innerHTML =3D message;=0A=

    6235. 

  6235. 	}=0A=

    6236. 

  6236. 	return true;=0A=

    6237. 

  6237. }=0A=

    6238. 

  6238. =0A=

    6239. 

  6239. /**=0A=

    6240. 

  6240.  * Inject a cute little progress spinner after the specified element=0A=

    6241. 

  6241.  *=0A=

    6242. 

  6242.  * @param element Element to inject after=0A=

    6243. 

  6243.  * @param id Identifier string (for use with removeSpinner(), below)=0A=

    6244. 

  6244.  */=0A=

    6245. 

  6245. function injectSpinner( element, id ) {=0A=

    6246. 

  6246. 	var spinner =3D document.createElement( 'img' );=0A=

    6247. 

  6247. 	spinner.id =3D 'mw-spinner-' + id;=0A=

    6248. 

  6248. 	spinner.src =3D stylepath + '/common/images/spinner.gif';=0A=

    6249. 

  6249. 	spinner.alt =3D spinner.title =3D '...';=0A=

    6250. 

  6250. 	if( element.nextSibling ) {=0A=

    6251. 

  6251. 		element.parentNode.insertBefore( spinner, element.nextSibling );=0A=

    6252. 

  6252. 	} else {=0A=

    6253. 

  6253. 		element.parentNode.appendChild( spinner );=0A=

    6254. 

  6254. 	}=0A=

    6255. 

  6255. }=0A=

    6256. 

  6256. =0A=

    6257. 

  6257. /**=0A=

    6258. 

  6258.  * Remove a progress spinner added with injectSpinner()=0A=

    6259. 

  6259.  *=0A=

    6260. 

  6260.  * @param id Identifier string=0A=

    6261. 

  6261.  */=0A=

    6262. 

  6262. function removeSpinner( id ) {=0A=

    6263. 

  6263. 	var spinner =3D document.getElementById( 'mw-spinner-' + id );=0A=

    6264. 

  6264. 	if( spinner ) {=0A=

    6265. 

  6265. 		spinner.parentNode.removeChild( spinner );=0A=

    6266. 

  6266. 	}=0A=

    6267. 

  6267. }=0A=

    6268. 

  6268. =0A=

    6269. 

  6269. function runOnloadHook() {=0A=

    6270. 

  6270. 	// don't run anything below this for non-dom browsers=0A=

    6271. 

  6271. 	if ( doneOnloadHook || !( document.getElementById && =

    6272. 

  6272. document.getElementsByTagName ) ) {=0A=

    6273. 

  6273. 		return;=0A=

    6274. 

  6274. 	}=0A=

    6275. 

  6275. =0A=

    6276. 

  6276. 	// set this before running any hooks, since any errors below=0A=

    6277. 

  6277. 	// might cause the function to terminate prematurely=0A=

    6278. 

  6278. 	doneOnloadHook =3D true;=0A=

    6279. 

  6279. =0A=

    6280. 

  6280. 	updateTooltipAccessKeys( null );=0A=

    6281. 

  6281. 	setupCheckboxShiftClick();=0A=

    6282. 

  6282. 	sortables_init();=0A=

    6283. 

  6283. =0A=

    6284. 

  6284. 	// Run any added-on functions=0A=

    6285. 

  6285. 	for ( var i =3D 0; i < onloadFuncts.length; i++ ) {=0A=

    6286. 

  6286. 		onloadFuncts[i]();=0A=

    6287. 

  6287. 	}=0A=

    6288. 

  6288. }=0A=

    6289. 

  6289. =0A=

    6290. 

  6290. /**=0A=

    6291. 

  6291.  * Add an event handler to an element=0A=

    6292. 

  6292.  *=0A=

    6293. 

  6293.  * @param Element element Element to add handler to=0A=

    6294. 

  6294.  * @param String attach Event to attach to=0A=

    6295. 

  6295.  * @param callable handler Event handler callback=0A=

    6296. 

  6296.  */=0A=

    6297. 

  6297. function addHandler( element, attach, handler ) {=0A=

    6298. 

  6298. 	if( window.addEventListener ) {=0A=

    6299. 

  6299. 		element.addEventListener( attach, handler, false );=0A=

    6300. 

  6300. 	} else if( window.attachEvent ) {=0A=

    6301. 

  6301. 		element.attachEvent( 'on' + attach, handler );=0A=

    6302. 

  6302. 	}=0A=

    6303. 

  6303. }=0A=

    6304. 

  6304. =0A=

    6305. 

  6305. /**=0A=

    6306. 

  6306.  * Add a click event handler to an element=0A=

    6307. 

  6307.  *=0A=

    6308. 

  6308.  * @param Element element Element to add handler to=0A=

    6309. 

  6309.  * @param callable handler Event handler callback=0A=

    6310. 

  6310.  */=0A=

    6311. 

  6311. function addClickHandler( element, handler ) {=0A=

    6312. 

  6312. 	addHandler( element, 'click', handler );=0A=

    6313. 

  6313. }=0A=

    6314. 

  6314. =0A=

    6315. 

  6315. /**=0A=

    6316. 

  6316.  * Removes an event handler from an element=0A=

    6317. 

  6317.  *=0A=

    6318. 

  6318.  * @param Element element Element to remove handler from=0A=

    6319. 

  6319.  * @param String remove Event to remove=0A=

    6320. 

  6320.  * @param callable handler Event handler callback to remove=0A=

    6321. 

  6321.  */=0A=

    6322. 

  6322. function removeHandler( element, remove, handler ) {=0A=

    6323. 

  6323. 	if( window.removeEventListener ) {=0A=

    6324. 

  6324. 		element.removeEventListener( remove, handler, false );=0A=

    6325. 

  6325. 	} else if( window.detachEvent ) {=0A=

    6326. 

  6326. 		element.detachEvent( 'on' + remove, handler );=0A=

    6327. 

  6327. 	}=0A=

    6328. 

  6328. }=0A=

    6329. 

  6329. // note: all skins should call runOnloadHook() at the end of html output,=0A=

    6330. 

  6330. //      so the below should be redundant. It's there just in case.=0A=

    6331. 

  6331. hookEvent( 'load', runOnloadHook );=0A=

    6332. 

  6332. =0A=

    6333. 

  6333. if ( ie6_bugs ) {=0A=

    6334. 

  6334. 	importScriptURI( stylepath + '/common/IEFixes.js' );=0A=

    6335. 

  6335. }=0A=

    6336. 

  6336. =0A=

    6337. 

  6337. // For future use.=0A=

    6338. 

  6338. mw =3D {};=0A=

    6339. 

  6339. =0A=

    6340. 

  6340. =0A=

    6341. 

  6341. 

    6342. 

  6342. ------=_NextPart_000_0000_01CC6DEF.5A1D4220

    6343. 

  6343. Content-Type: application/octet-stream

    6344. 

  6344. Content-Transfer-Encoding: quoted-printable

    6345. 

  6345. Content-Location: http://wiki.theory.org/skins/common/ajax.js?270

    6346. 

  6346. 

    6347. 

  6347. // remote scripting library=0A=

    6348. 

  6348. // (c) copyright 2005 modernmethod, inc=0A=

    6349. 

  6349. var sajax_debug_mode =3D false;=0A=

    6350. 

  6350. var sajax_request_type =3D "GET";=0A=

    6351. 

  6351. =0A=

    6352. 

  6352. /**=0A=

    6353. 

  6353. * if sajax_debug_mode is true, this function outputs given the message =

    6354. 

  6354. into =0A=

    6355. 

  6355. * the element with id =3D sajax_debug; if no such element exists in the =

    6356. 

  6356. document, =0A=

    6357. 

  6357. * it is injected.=0A=

    6358. 

  6358. */=0A=

    6359. 

  6359. function sajax_debug(text) {=0A=

    6360. 

  6360. 	if (!sajax_debug_mode) return false;=0A=

    6361. 

  6361. =0A=

    6362. 

  6362. 	var e=3D document.getElementById('sajax_debug');=0A=

    6363. 

  6363. =0A=

    6364. 

  6364. 	if (!e) {=0A=

    6365. 

  6365. 		e=3D document.createElement("p");=0A=

    6366. 

  6366. 		e.className=3D 'sajax_debug';=0A=

    6367. 

  6367. 		e.id=3D 'sajax_debug';=0A=

    6368. 

  6368. =0A=

    6369. 

  6369. 		var b=3D document.getElementsByTagName("body")[0];=0A=

    6370. 

  6370. =0A=

    6371. 

  6371. 		if (b.firstChild) b.insertBefore(e, b.firstChild);=0A=

    6372. 

  6372. 		else b.appendChild(e);=0A=

    6373. 

  6373. 	}=0A=

    6374. 

  6374. =0A=

    6375. 

  6375. 	var m=3D document.createElement("div");=0A=

    6376. 

  6376. 	m.appendChild( document.createTextNode( text ) );=0A=

    6377. 

  6377. =0A=

    6378. 

  6378. 	e.appendChild( m );=0A=

    6379. 

  6379. =0A=

    6380. 

  6380. 	return true;=0A=

    6381. 

  6381. }=0A=

    6382. 

  6382. =0A=

    6383. 

  6383. /**=0A=

    6384. 

  6384. * compatibility wrapper for creating a new XMLHttpRequest object.=0A=

    6385. 

  6385. */=0A=

    6386. 

  6386. function sajax_init_object() {=0A=

    6387. 

  6387. 	sajax_debug("sajax_init_object() called..")=0A=

    6388. 

  6388. 	var A;=0A=

    6389. 

  6389. 	try {=0A=

    6390. 

  6390. 		// Try the new style before ActiveX so we don't=0A=

    6391. 

  6391. 		// unnecessarily trigger warnings in IE 7 when=0A=

    6392. 

  6392. 		// set to prompt about ActiveX usage=0A=

    6393. 

  6393. 		A =3D new XMLHttpRequest();=0A=

    6394. 

  6394. 	} catch (e) {=0A=

    6395. 

  6395. 		try {=0A=

    6396. 

  6396. 			A=3Dnew ActiveXObject("Msxml2.XMLHTTP");=0A=

    6397. 

  6397. 		} catch (e) {=0A=

    6398. 

  6398. 			try {=0A=

    6399. 

  6399. 				A=3Dnew ActiveXObject("Microsoft.XMLHTTP");=0A=

    6400. 

  6400. 			} catch (oc) {=0A=

    6401. 

  6401. 				A=3Dnull;=0A=

    6402. 

  6402. 			}=0A=

    6403. 

  6403. 		}=0A=

    6404. 

  6404. 	}=0A=

    6405. 

  6405. 	if (!A)=0A=

    6406. 

  6406. 		sajax_debug("Could not create connection object.");=0A=

    6407. 

  6407. =0A=

    6408. 

  6408. 	return A;=0A=

    6409. 

  6409. }=0A=

    6410. 

  6410. =0A=

    6411. 

  6411. /**=0A=

    6412. 

  6412. * Perform an ajax call to mediawiki. Calls are handeled by =

    6413. 

  6413. AjaxDispatcher.php=0A=

    6414. 

  6414. *   func_name - the name of the function to call. Must be registered in =

    6415. 

  6415. $wgAjaxExportList=0A=

    6416. 

  6416. *   args - an array of arguments to that function=0A=

    6417. 

  6417. *   target - the target that will handle the result of the call. If this =

    6418. 

  6418. is a function,=0A=

    6419. 

  6419. *            if will be called with the XMLHttpRequest as a parameter; =

    6420. 

  6420. if it's an input=0A=

    6421. 

  6421. *            element, its value will be set to the resultText; if it's =

    6422. 

  6422. another type of=0A=

    6423. 

  6423. *            element, its innerHTML will be set to the resultText.=0A=

    6424. 

  6424. *=0A=

    6425. 

  6425. * Example:=0A=

    6426. 

  6426. *    sajax_do_call('doFoo', [1, 2, 3], =

    6427. 

  6427. document.getElementById("showFoo"));=0A=

    6428. 

  6428. *=0A=

    6429. 

  6429. * This will call the doFoo function via MediaWiki's AjaxDispatcher, with=0A=

    6430. 

  6430. * (1, 2, 3) as the parameter list, and will show the result in the =

    6431. 

  6431. element=0A=

    6432. 

  6432. * with id =3D showFoo=0A=

    6433. 

  6433. */=0A=

    6434. 

  6434. function sajax_do_call(func_name, args, target) {=0A=

    6435. 

  6435. 	var i, x, n;=0A=

    6436. 

  6436. 	var uri;=0A=

    6437. 

  6437. 	var post_data;=0A=

    6438. 

  6438. 	uri =3D wgServer +=0A=

    6439. 

  6439. 		((wgScript =3D=3D null) ? (wgScriptPath + "/index.php") : wgScript) +=0A=

    6440. 

  6440. 		"?action=3Dajax";=0A=

    6441. 

  6441. 	if (sajax_request_type =3D=3D "GET") {=0A=

    6442. 

  6442. 		if (uri.indexOf("?") =3D=3D -1)=0A=

    6443. 

  6443. 			uri =3D uri + "?rs=3D" + encodeURIComponent(func_name);=0A=

    6444. 

  6444. 		else=0A=

    6445. 

  6445. 			uri =3D uri + "&rs=3D" + encodeURIComponent(func_name);=0A=

    6446. 

  6446. 		for (i =3D 0; i < args.length; i++)=0A=

    6447. 

  6447. 			uri =3D uri + "&rsargs[]=3D" + encodeURIComponent(args[i]);=0A=

    6448. 

  6448. 		//uri =3D uri + "&rsrnd=3D" + new Date().getTime();=0A=

    6449. 

  6449. 		post_data =3D null;=0A=

    6450. 

  6450. 	} else {=0A=

    6451. 

  6451. 		post_data =3D "rs=3D" + encodeURIComponent(func_name);=0A=

    6452. 

  6452. 		for (i =3D 0; i < args.length; i++)=0A=

    6453. 

  6453. 			post_data =3D post_data + "&rsargs[]=3D" + =

    6454. 

  6454. encodeURIComponent(args[i]);=0A=

    6455. 

  6455. 	}=0A=

    6456. 

  6456. 	x =3D sajax_init_object();=0A=

    6457. 

  6457. 	if (!x) {=0A=

    6458. 

  6458. 		alert("AJAX not supported");=0A=

    6459. 

  6459. 		return false;=0A=

    6460. 

  6460. 	}=0A=

    6461. 

  6461. =0A=

    6462. 

  6462. 	try {=0A=

    6463. 

  6463. 		x.open(sajax_request_type, uri, true);=0A=

    6464. 

  6464. 	} catch (e) {=0A=

    6465. 

  6465. 		if (window.location.hostname =3D=3D "localhost") {=0A=

    6466. 

  6466. 			alert("Your browser blocks XMLHttpRequest to 'localhost', try using a =

    6467. 

  6467. real hostname for development/testing.");=0A=

    6468. 

  6468. 		}=0A=

    6469. 

  6469. 		throw e;=0A=

    6470. 

  6470. 	}=0A=

    6471. 

  6471. 	if (sajax_request_type =3D=3D "POST") {=0A=

    6472. 

  6472. 		x.setRequestHeader("Method", "POST " + uri + " HTTP/1.1");=0A=

    6473. 

  6473. 		x.setRequestHeader("Content-Type", =

    6474. 

  6474. "application/x-www-form-urlencoded");=0A=

    6475. 

  6475. 	}=0A=

    6476. 

  6476. 	x.setRequestHeader("Pragma", "cache=3Dyes");=0A=

    6477. 

  6477. 	x.setRequestHeader("Cache-Control", "no-transform");=0A=

    6478. 

  6478. 	x.onreadystatechange =3D function() {=0A=

    6479. 

  6479. 		if (x.readyState !=3D 4)=0A=

    6480. 

  6480. 			return;=0A=

    6481. 

  6481. =0A=

    6482. 

  6482. 		sajax_debug("received (" + x.status + " " + x.statusText + ") " + =

    6483. 

  6483. x.responseText);=0A=

    6484. 

  6484. =0A=

    6485. 

  6485. 		//if (x.status !=3D 200)=0A=

    6486. 

  6486. 		//	alert("Error: " + x.status + " " + x.statusText + ": " + =

    6487. 

  6487. x.responseText);=0A=

    6488. 

  6488. 		//else=0A=

    6489. 

  6489. =0A=

    6490. 

  6490. 		if ( typeof( target ) =3D=3D 'function' ) {=0A=

    6491. 

  6491. 			target( x );=0A=

    6492. 

  6492. 		}=0A=

    6493. 

  6493. 		else if ( typeof( target ) =3D=3D 'object' ) {=0A=

    6494. 

  6494. 			if ( target.tagName =3D=3D 'INPUT' ) {=0A=

    6495. 

  6495. 				if (x.status =3D=3D 200) target.value=3D x.responseText;=0A=

    6496. 

  6496. 				//else alert("Error: " + x.status + " " + x.statusText + " (" + =

    6497. 

  6497. x.responseText + ")");=0A=

    6498. 

  6498. 			}=0A=

    6499. 

  6499. 			else {=0A=

    6500. 

  6500. 				if (x.status =3D=3D 200) target.innerHTML =3D x.responseText;=0A=

    6501. 

  6501. 				else target.innerHTML=3D "<div class=3D'error'>Error: " + x.status + =

    6502. 

  6502. " " + x.statusText + " (" + x.responseText + ")</div>";=0A=

    6503. 

  6503. 			}=0A=

    6504. 

  6504. 		}=0A=

    6505. 

  6505. 		else {=0A=

    6506. 

  6506. 			alert("bad target for sajax_do_call: not a function or object: " + =

    6507. 

  6507. target);=0A=

    6508. 

  6508. 		}=0A=

    6509. 

  6509. =0A=

    6510. 

  6510. 		return;=0A=

    6511. 

  6511. 	}=0A=

    6512. 

  6512. =0A=

    6513. 

  6513. 	sajax_debug(func_name + " uri =3D " + uri + " / post =3D " + post_data);=0A=

    6514. 

  6514. 	x.send(post_data);=0A=

    6515. 

  6515. 	sajax_debug(func_name + " waiting..");=0A=

    6516. 

  6516. 	delete x;=0A=

    6517. 

  6517. =0A=

    6518. 

  6518. 	return true;=0A=

    6519. 

  6519. }=0A=

    6520. 

  6520. =0A=

    6521. 

  6521. /**=0A=

    6522. 

  6522.  * @return boolean whether the browser supports XMLHttpRequest=0A=

    6523. 

  6523.  */=0A=

    6524. 

  6524. function wfSupportsAjax() {=0A=

    6525. 

  6525. 	var request =3D sajax_init_object();=0A=

    6526. 

  6526. 	var supportsAjax =3D request ? true : false;=0A=

    6527. 

  6527. 	delete request;=0A=

    6528. 

  6528. 	return supportsAjax;=0A=

    6529. 

  6529. }=0A=

    6530. 

  6530. =0A=

    6531. 

  6531. 

    6532. 

  6532. ------=_NextPart_000_0000_01CC6DEF.5A1D4220

    6533. 

  6533. Content-Type: application/octet-stream

    6534. 

  6534. Content-Transfer-Encoding: quoted-printable

    6535. 

  6535. Content-Location: http://wiki.theory.org/index.php?title=-&action=raw&gen=js&useskin=monobook&270

    6536. 

  6536. 

    6537. 

  6537. /* generated javascript */=0A=

    6538. 

  6538. var skin =3D 'monobook';=0A=

    6539. 

  6539. var stylepath =3D '/skins';=0A=

    6540. 

  6540. =0A=

    6541. 

  6541. /* MediaWiki:Common.js */=0A=

    6542. 

  6542. /* Any JavaScript here will be loaded for all users on every page load. =

    6543. 

  6543. */=0A=

    6544. 

  6544. =0A=

    6545. 

  6545. /* MediaWiki:Monobook.js */=0A=

    6546. 

  6546. /* Any JavaScript here will be loaded for users using the MonoBook skin =

    6547. 

  6547. */

    6548. 

  6548. ------=_NextPart_000_0000_01CC6DEF.5A1D4220--

    6549. 

  6549.