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  14    <H1>[IRCServices Coding] ircservices5.0a28 various</H1>
  15     <B>V13</B>
  16     <A HREF="mailto:ircservices-coding%40ircservices.za.net?Subject=%5BIRCServices%20Coding%5D%20ircservices5.0a28%20various&In-Reply-To=3cb8ede0.13655%40achurch.org"
  17        TITLE="[IRCServices Coding] ircservices5.0a28 various">v13 at it.teithe.gr
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  19     <I>Sun Apr 14 05:22:01 PDT 2002</I>
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  34 <PRE>On Sunday 14 April 2002 14:46, Andrew Church wrote:
  35 &gt;<i>      &quot;Already connected&quot; sounds like it's ignoring the fact that the socket
  36 </I>&gt;<i> is non-blocking (or maybe my logic is wrong).
  37 </I>
  38 I'm not 100% sure about this.. anyway...
  39
  40 In sockets.c:482:
  41
  42 if ((i = connect(fd, (struct sockaddr *)&amp;sa, sizeof(sa))) &lt; 0
  43         &amp;&amp; errno != EINPROGRESS
  44
  45 and after that:
  46
  47 if (i == 0) {
  48         s-&gt;flags |= SF_CONNECTED;
  49         FD_SET(fd, &amp;sock_fds);
  50         if (s-&gt;cb_connect)
  51             s-&gt;cb_connect(s, 0);
  52     } else {
  53         s-&gt;flags |= SF_CONNECTING;
  54         FD_SET(fd, &amp;write_fds);
  55     }
  56
  57 So a non blocking connect() returns EINPROGRESS and (s-&gt;flags &amp; SF_CONNECTING)
  58 is true..
  59
  60 After that, when the connection is established, in sockets.c:296 in function
  61 check_sockets():
  62
  63 } else if (s-&gt;flags &amp; SF_CONNECTING) {
  64                 /* Connection established (or failed) */
  65                 if (debug &gt;= 2)
  66                     log(&quot;debug: sockets: connect on fd %d returned&quot;, i);
  67                 res = connect(s-&gt;fd, (struct sockaddr *)&amp;s-&gt;remote,
  68                               sizeof(s-&gt;remote));
  69
  70 So you're calling connect() twice and the 2nd call is done when the socket
  71 *IS* connected, since writeability indicates the connection is established.
  72
  73 &gt;<i>   --Andrew Church
  74 </I>&lt;&lt;V13&gt;&gt;
  75
  76 </PRE>
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