/silverlining/server-root/etc/varnish/default.vcl

 1backend default {
 2.host = "127.0.0.1";
 3.port = "8080";
 4}
 5
 6sub vcl_pipe {
 7    # Note that only the first request to the backend will have
 8    # X-Forwarded-For set.  If you use X-Forwarded-For and want to
 9    # have it set for all requests, make sure to have:
10    set req.http.connection = "close";
11    # here.  It is not set by default as it might break some broken web
12    # applications, like IIS with NTLM authentication.
13    return (pipe);
14}
15
16sub vcl_recv {
17    set req.http.X-Varnish-IP = server.ip;
18    # Add a unique header containing the client address
19    remove req.http.X-Forwarded-For;
20    set req.http.X-Forwarded-For = client.ip;
21    if (req.request == "POST") {
22        return(pass);
23    }
24    if (req.request != "GET" && req.request != "HEAD" &&
25        req.request != "PUT" && req.request != "POST" &&
26        req.request != "TRACE" && req.request != "OPTIONS" &&
27        req.request != "DELETE") {
28
29        # Non-RFC2616 or CONNECT which is weird. #
30        return(pass);
31    }
32    if (req.http.Authorization) {
33        # Not cacheable by default #
34        return(pass);
35    }
36}
37
38sub vcl_fetch {
39    if(beresp.http.Pragma ~ "no-cache" ||
40       beresp.http.Cache-Control ~ "no-cache" ||
41       beresp.http.Cache-Control ~ "private") {
42            return(pass);
43    }
44    if (beresp.status >= 300) {
45        return(pass);
46    }
47    # Django regularly sends pages with Set-Cookie and cache control, 
48    # we'll ignore Cache-Control in that case, as there's no point to
49    # caching something that sets a cookie.
50    if (beresp.http.Set-Cookie) {
51        unset beresp.http.Cache-Control;
52        return(pass);
53    }
54    if (beresp.http.Cache-Control ~ "max-age" || beresp.http.Expires) {
55        unset beresp.http.Set-Cookie;
56        return(deliver);
57    }
58    # Apache adds Vary: X-Forwarded-For to each response, which would
59    # mean a separate cache for each client; not our intent, so we'll
60    # ignore it:
61    set beresp.http.Vary = regsub(beresp.http.Vary, ",?X-Forwarded-For", "");
62    return(pass);
63}
64
65sub vcl_hit {
66    if (!obj.cacheable) {
67        return(pass);
68    }
69
70    if (req.http.Cache-Control ~ "no-cache") {
71        # Ignore requests via proxy caches,  IE users and badly behaved crawlers
72        # like msnbot that send no-cache with every request.
73        if (! (req.http.Via || req.http.User-Agent ~ "bot|MSIE")) {
74            set obj.ttl = 0s;
75            return (restart);
76        } 
77    }
78    return(deliver);
79}