[Webkit-unassigned] [Bug 37104] "echo | nc 127.0.0.1 9999" can hang for 1+ seconds

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=37104


Adam Barth <abarth at webkit.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|cross-origin XHR hangs for  |"echo | nc 127.0.0.1 9999"
                   |1+ seconds occasionally     |can hang for 1+ seconds




--- Comment #16 from Adam Barth <abarth at webkit.org>  2010-04-07 19:19:10 PST ---
Reduced test case:
run this command in a loop (with no server listening on port 9999):

echo | nc 127.0.0.1 9999

Sometimes it will hang for 1+ seconds.  Other examples:

dig localhost  <-- no hang
ping -c 1 127.0.0.1  <-- does hang (often for 11 seconds) 
curl -s http://localhost:9999/xxx  <-- does hang

If you try talking to a remote server (like webblaze.org), you don't get any
hangs.  My read is that this is a bug in Mac OS X listening sockets.

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