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<TITLE>Tcl API Reference -- ns_sockcheck</TITLE>
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<a name="82223">
</a><h3>ns_sockcheck</h3>
<a name="82224">
</a><h4>Overview</h4>
<p><a name="82225">
</a>Check if a socket is connected</p>
<a name="82226">
</a><h4>Syntax</h4>
<p><a name="82227">
</a><b>ns_sockcheck</b> <i>fileid</i></p>
<a name="82228">
</a><h4>Description</h4>
<p><a name="82229">
</a><b>ns_sockcheck</b> uses recv() or send() calls to check if a socket is still connected. The <i>fileid</i> is the read or write file id returned by <b>ns_sockopen</b>. This function is useful if you used the -nonblock option with <b>ns_sockopen</b> after calling <b>ns_sockselect</b>.</p>
<a name="82230">
</a><h4>Example</h4>
<p><a name="82234">
</a>An example containing <b>ns_sockcheck</b> is provided under <b><a href="tapi-136.htm#82277"></b>ns_sockselect<b></a></b>.</p>
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