📄 peername.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="AutoNumber1" 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 face="Verdana" size="4">getpeername</font></h1><p><font face="Verdana" size="2">The <b>getpeername</b> function retrieves the name of the peer to which a socket is connected.</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 face="Courier New" size="1">int getpeername(<br> UDTSOCKET <font color="#FFFFFF">u</font>,</font><p style="margin-top: 0; margin-bottom: 0"> <font face="Courier New" size="1"> struct sockaddr *<font color="#FFFFFF"><a class="synParam" onclick="showTip(this)">name</a></font><a class="synParam" onclick="showTip(this)">,</a><br> int *<font color="#FFFFFF"><a class="synParam" onclick="showTip(this)">namelen</a></font></font><p style="margin-top: 0; margin-bottom: 0"> <font face="Courier New" size="1">);</font></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 a connected socket.</font></dd> <dt><font face="Verdana"><i><font size="2">name</font></i></font></dt> <dd><font face="Verdana" size="2">[out] The structure that receives the name of the peer.</font></dd> <dt><font face="Verdana"><i><font size="2">namelen</font></i></font></dt> <dd><font face="Verdana" size="2">[in, out] Pointer to the size of the name structure.</font></dd></dl><h4><font face="Verdana" size="2">Return Values</font></h4><p><font face="Verdana" size="2">On success, 0 is returned. Otherwise, UDT::ERROR is returned and the specific error information can be retrieved by <a href="error.htm">getlasterror</a>.</font></p> <table border="1" cellpadding="0" cellspacing="0" style="border-collapse: collapse" id="table1" 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"> 2002</font></td> <td width="812"> <p style="margin-top: 1; margin-bottom: 1"><font face="Verdana" size="1"> <i>u</i> is not connected.</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">invalid parameters.</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>getpeername</b> method retrieves the address of the peer side. The UDT socket must be connected at the time <b>getpeername</b> is called.</font></P><p></p><p></p><H4><font face="Verdana" size="2">See Also</font></H4><P><a href="bind.htm"><b><font face="Verdana" size="2">bind</font></b></a><font face="Verdana" size="2"><b>, <a href="connect.htm">connect</a></b></font></P></body></html>⌨️ 快捷键说明
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