> I read your original email again:
> http://curl.haxx.se/mail/lib-2008-01/0116.html
>
> I disagree with the explanation for the cause and therefore
> also the conclusion about what needs to be done. Can you
> provide any further details or logs or anything that backs up
> your observations?
>
> Could it possibly be so that the entire CONNECT request isn't
> sent in the
> (only) send()? AFAIS, there's no code to send any remainders
> if it didn't sent the entire chunk in one go...

I believe I found something that may be causing the problem:

In multi_getsock(), fdset is not added appropriately for state
CURLM_STATE_WAITPROXYCONNECT. Thus if we are in the WAITPROXYCONNECT
state, the file descriptors may not be added to the FD_SET when we call
curl_multi_fdset(), causing curl to stuck even there are something to
read from the proxy server.

The following patch seems to fix the problem in my case:

Index: multi.c
===================================================================
--- multi.c (revision 7.17.1)
+++ multi.c (working copy)
@@ -772,6 +772,7 @@
   case CURLM_STATE_DOING:
     return Curl_doing_getsock(easy->easy_conn, socks, numsocks);
 
+ case CURLM_STATE_WAITPROXYCONNECT:
   case CURLM_STATE_WAITCONNECT:
     return waitconnect_getsock(easy->easy_conn, socks, numsocks);
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Received on 2008-01-18