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  14.    <H1>[whatwg] WebSocket bufferedAmount includes overhead or not</H1>
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  16.     <B>Boris Zbarsky</B> 
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  17.     <A HREF="mailto:whatwg%40lists.whatwg.org?Subject=Re%3A%20%5Bwhatwg%5D%20WebSocket%20bufferedAmount%20includes%20overhead%20or%20not&In-Reply-To=%3C4BB3C9D8.8010100%40mit.edu%3E"
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  18.        TITLE="[whatwg] WebSocket bufferedAmount includes overhead or not">bzbarsky at MIT.EDU
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  20.     <I>Wed Mar 31 15:16:56 PDT 2010</I>
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  36. <PRE>On 3/31/10 2:38 AM, Jonas Sicking wrote:
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  37. &gt;<i> I would have expected bufferedAmount to only change as a result of an
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  38. </I>&gt;<i> event being posted to the main event loop. We generally try to avoid
    39. 

  39. </I>&gt;<i> &quot;racy&quot; variables since people don't expect them. Consider for example
    40. 

  40. </I>&gt;<i>
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  41. </I>&gt;<i> if (ws.bufferedAmount&gt;  X) {
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  42. </I>&gt;<i>    setUpSomeState();
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  43. </I>&gt;<i> }
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  44. </I>&gt;<i>
    45. 

  45. </I>&gt;<i> try {
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  46. </I>&gt;<i>    doOtherThings();
    47. 

  47. </I>&gt;<i> }
    48. 

  48. </I>&gt;<i> finally {
    49. 

  49. </I>&gt;<i>    if (ws.bufferedAmount&gt;  X) {
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  50. </I>&gt;<i>      cleanUpState();
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  51. </I>&gt;<i>    }
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  52. </I>&gt;<i> }
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  53. </I>&gt;<i>
    54. 

  54. </I>&gt;<i> I'd imagine most JS developers to expect the cleanup to always happen
    55. 

  55. </I>&gt;<i> if the setup did.
    56. 

  56. </I>
    57. 

  57. Sure, but do they expect the cleanup to happen if the setup did not if 
    58. 

  58. doOtherThings tried to send() stuff?
    59. 

  59. 

  60. More to the point, is send() allowed to actually send anything when 
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  61. called, or does it have to buffer it all until the next time you get to 
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  62. the event loop?
    63. 

  63. 

  64. -Boris
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  65. </PRE>
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