📄 bind.htm
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<html><head><meta http-equiv="Content-Language" content="en-us"><meta http-equiv="Content-Type" content="text/html; charset=windows-1252"><title>UDT Reference</title></head><body><table border="1" cellpadding="0" cellspacing="0" style="border-collapse: collapse" width="100%" id="table1" bgcolor="#99CCFF" bordercolor="#99CCFF"> <tr> <td width="100%"><font face="Verdana" size="2"><i> UDT Reference: UDT Functions</i></font></td> </tr></table><h1><font size="4" face="Verdana">bind</font></h1><p><font face="Verdana" size="2">The <b>bind</b> method associates an socket with a local address.</font></p><table border="1" cellpadding="0" cellspacing="0" style="border-collapse: collapse" width="100%" id="AutoNumber2" bgcolor="#C0C0C0" bordercolor="#C0C0C0"> <tr> <td width="100%"> <p style="margin-top: 0; margin-bottom: 0"> <font size="1" face="Courier New">int bind(<br> UDTSOCKET <font color="#FFFFFF"> <a class="synParam" onclick="showTip(this)">u</a></font>,</font></p> <p style="margin-top: 0; margin-bottom: 0"> <font size="1" face="Courier New"> const struct sockaddr *<font color="#FFFFFF"><a class="synParam" onclick="showTip(this)">name</a></font>,<br> int <font color="#FFFFFF"> <a class="synParam" onclick="showTip(this)">namelen</a></font><br> );</font></p></td> </tr></table><h4><font face="Verdana" size="2">Parameters</font></h4><dl> <dt><font face="Verdana"><i><font size="2">u</font></i></font></dt> <dd><font face="Verdana" size="2">[in] Descriptor identifying an unbound socket.</font></dd> <dt><font face="Verdana"><i><font size="2">name</font></i></font></dt> <dd><font face="Verdana" size="2">[in] Address to assign to the socket from the <u>sockaddr</u> structure.</font></dd> <dt><font face="Verdana"><i><font size="2">namelen</font></i></font></dt> <dd><font face="Verdana" size="2">[in] Length of the value in the name parameter.</font></dd></dl><h4><font face="Verdana" size="2">Return Values</font></h4><p><font face="Verdana" size="2">If the binding is successful, bind returns 0, otherwise it returns UDT::ERROR and the specific error information can be retrieved using <a href="error.htm">getlasterror</a>.</font></p> <table border="1" cellpadding="0" cellspacing="0" style="border-collapse: collapse" id="table2" bordercolordark="#C0C0C0" bordercolorlight="#C0C0C0" width="100%"> <tr> <th align="center" bgcolor="#C0C0C0" width="133"> <font face="Verdana" size="2">Error Code</font></th> <th align="center" bgcolor="#C0C0C0" width="812"><b> <font face="Verdana" size="2">Comment</font></b></th> </tr> <tr> <td width="133"> <p style="margin-top: 1; margin-bottom: 1"><font face="Verdana" size="1"> 5001</font></td> <td width="812"> <p style="margin-top: 1; margin-bottom: 1"><font face="Verdana" size="1"> <i>u</i> has already been bound to a certain address.</font></td> </tr> <tr> <td width="133"> <p style="margin-top: 1; margin-bottom: 1"><font face="Verdana" size="1"> 5003</font></td> <td width="812"> <p style="margin-top: 1; margin-bottom: 1"><font face="Verdana" size="1"> the address is either invalid or unavailable.</font></td> </tr> <tr> <td width="133"> <p style="margin-top: 1; margin-bottom: 1"><font face="Verdana" size="1"> 5004</font></td> <td width="812"> <p style="margin-top: 1; margin-bottom: 1"><font face="Verdana" size="1"> <i>u</i> is an invalid UDT socket.</font></td> </tr> </table> <H4><font face="Verdana" size="2">Description</font></H4><P><font face="Verdana" size="2">The <b>bind</b> method is usually used to assign a UDT socket a local address, including the IP version, local IP address, and port number. This is not necessary in all cases, except that before a listen call, a socket must be bound.</font></P><P><font face="Verdana" size="2">If the <b>bind</b> method is not called by applications, the socket will be bound to any available address automatically when <a href="connect.htm">connect</a> is called.</font></P><p></p><p></p><H4><font face="Verdana" size="2">See Also</font></H4><P><font face="Verdana" size="2"><b><a href="listen.htm">listen</a>, <a href="connect.htm">connect</a>,</b> <b><a href="opt.htm">setsockopt</a></b>,<b><a href="opt.htm">getsockopt</a></b></font></P></body></html>⌨️ 快捷键说明
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