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<TITLE>C API Reference -- Ns_SockAsyncConnect</TITLE>
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<a name="289239">
</a><h3>Ns_SockAsyncConnect</h3>
<a name="305157">
</a><h4>Overview</h4>
Create a remote socket and return immediately
<a name="305162">
</a><a name="305159">
</a><h4>Syntax</h4>
<pre> <a name="305165"></a>SOCKET Ns_SockAsyncConnect (
<a name="305168"></a>char *host,
<a name="305169"></a>int port
<a name="305170"></a>);
</pre><p><a name="305160">
</a><h4>Description</h4>
<p><a name="305171">
</a>Ns_SockAsyncConnect creates a socket connected to a remote host and port, returning immediately with the connection in progress. A select call can later be used to determine when the connection has been established.</p>
<a name="305174">
</a><h4>Examples</h4>
<pre> <a name="305179"></a>SOCKET sock;
<a name="305180"></a>fd_set set;
<a name="305181"></a>struct timeval tv;
<a name="305182"></a>sock = Ns_SockAsyncConnect("mailhost", 25);
<a name="305183"></a>... perform some other work while connection is in progress...
<a name="305184"></a>
<a name="305205"></a>... check for connection ...
<a name="305185"></a>tv.tv_sec = 2; /* allow 2 more seconds */
<a name="305186"></a>tv.tv_usec = 0;
<a name="305187"></a>FD_ZERO(&set);
<a name="305188"></a>FD_SET(sock, &set);
<a name="305189"></a>if (select(sock+1, NULL, &set, NULL, &tv) != 1) {
<a name="305190"></a> ... timeout - close socket and return error...
<a name="305191"></a> Ns_CloseLater(sock);
<a name="305192"></a>} else {
<a name="305193"></a> ... use socket ...
<a name="305194"></a>}
</pre><p>
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