📄 websopenlisten.htm
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<html><head><!- Copyright (c) Go Ahead Software Inc., 1995-2000. All Rights Reserved. -><title>websOpenListen -- GoAhead WebServer API</title><link rel="stylesheet" href="../../../style/doc.css" type="text/css"></head><body><table width="550"> <tr><td><TABLE border=0 width=100% cellspacing=0 cellpadding=0 CLASS="apiTitle"> <TR> <td class="titleLeft" align=left width="33%"><b>websOpenListen</b></TD><td class="titleCenter" align=center width="33%"><b>GoAhead WebServer API</b></TD><td class="titleRight" align=right width="33%"><B>GoAhead EMF</B></TD></TR> </TABLE><HR> <h2>Synopsis</h2><p>Open the TCP/IP port used by the web server to listen for browser requests.</p><h2>Prototype</h2><pre> #include "webs.h" int <b>websOpenListen</b>(int port, int retries); </pre><h2>Parameters</h2><TABLE WIDTH=100% BORDER=0 CELLPADDING="0" CELLSPACING="0"> <TR> <TD VALIGN="TOP" WIDTH="6%">port</TD><TD WIDTH="94%">The port to open for GoAhead WebServer to listen on.</TD></TR> <TR> <TD VALIGN="TOP" WIDTH="6%">retries</TD><TD WIDTH="94%">The number of times websOpen will try to open the next available port if <I>port</I> is not available.</TD></TR> </TABLE><h2>Description</h2><P>The websOpenListen procedure opens the TCP/IP port on which the GoAhead WebServer listens for browser requests. You should call <A href="websCloseListen.htm">websCloseListen</A> to close the existing listen port before calling websOpenListen. Normally websOpenListen is called automatically when you call <A href="websOpen.htm">websOpen</A> .</P><P>The <EM>port </EM>parameter specifies the TCP/IP to open. If this cannot be opened and <EM>retries </EM>is greater than zero, the next port in sequence will be opened for up to <EM>retries </EM>times until a port is successfully opened. To determine the port number actually opened, call <a href="websGetPort.htm">websGetPort</a>.</P><h2>Return Value</h2><p>Returns 0 if the open succeeds, otherwise -1 is returned.</p><h2>Example</h2><pre> websCloseListen(); websOpenListen(80, 5); </pre><h2>Stability Classification</h2><p>Stable.</p><h2>See Also</h2><p> <A href="websClose.htm">websClose</A>, <A href="websCloseListen.htm">websCloseListen</A> </p></td></tr></table></body></html>⌨️ 快捷键说明
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