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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN"><html><head><!-- Copyright 1997 The Open Group, All Rights Reserved --><title>t_getprotaddr</title></head><body bgcolor=white><center><font size=2>The Single UNIX ® Specification, Version 2<br>Copyright © 1997 The Open Group</font></center><hr size=2 noshade><h4>NAME</h4><blockquote>t_getprotaddr - get the protocol addresses</blockquote><h4>SYNOPSIS</h4><blockquote><pre><code>#include <<a href="xti.h.html">xti.h</a>>int t_getprotaddr( int fd, struct t_bind *boundaddr, struct t_bind *peeraddr)</code></pre></blockquote><h4>DESCRIPTION</h4><blockquote><pre><P><table bordercolor=#000000 border=1 align=center><tr valign=top><th align=center><b>Parameters</b><th align=center><b>Before call</b><th align=center><b>After call</b><tr valign=top><td align=left>fd<td align=center>x<td align=center>/<tr valign=top><td align=left>boundaddr->addr.maxlen<td align=center>x<td align=center>=<tr valign=top><td align=left>boundaddr->addr.len<td align=center>/<td align=center>x<tr valign=top><td align=left>boundaddr->addr.buf<td align=center>?<td align=center>(?)<tr valign=top><td align=left>boundaddr->qlen<td align=center>=<td align=center>=<tr valign=top><td align=left>peeraddr->addr.maxlen<td align=center>x<td align=center>=<tr valign=top><td align=left>peeraddr->addr.len<td align=center>/<td align=center>x<tr valign=top><td align=left>peeraddr->addr.buf<td align=center>?<td align=center>(?)<tr valign=top><td align=left>peeraddr->qlen<td align=center>=<td align=center>=</table></pre><p>The<i>t_getprotaddr()</i>function returns local and remote protocol addresses currently associatedwith the transport endpoint specified by<I>fd</I>.In<I>boundaddr</I>and<I>peeraddr</I>the user specifies<I>maxlen,</I>which is the maximum size (in bytes) of the address buffer, and<I>buf</I>which points to the buffer where the address is to be placed.On return, the<I>buf</I>field of<I>boundaddr</I>points to the address, if any, currently bound to<I>fd</I>,and the<I>len</I>field specifies the length of the address. If the transport endpoint is in theT_UNBND state, zero is returned in the<I>len</I>field of<I>boundaddr</I>.The<I>buf</I>field of<I>peeraddr</I>points to the address, if any, currently connected to<I>fd</I>,and the<I>len</I>field specifies the length of the address. If the transport endpoint is not inthe T_DATAXFER, T_INREL, T_OUTCON or T_OUTREL states, zero is returned in the<I>len</I>field of<I>peeraddr</I>.If the <I>maxlen</I>field of <I>boundaddr</I>or <I>peeraddr</I>is set to zero, no address is returned.</blockquote><h4>VALID STATES</h4><blockquote>ALL - apart from T_UNINIT</blockquote><h4>ERRORS</h4><blockquote>On failure,<I>t_errno</I>is set to one of the following:<dl compact><dt>[TBADF]<dd>The specified file descriptor does not refer to a transport endpoint.<dt>[TBUFOVFLW]<dd>The number of bytes allocated for an incoming argument (<I>maxlen</I>)is greater than 0 but not sufficient to store the value of that argument.<dt>[TPROTO]<dd>This error indicates that a communication problem has been detected betweenXTI and the transport provider for which there is no other suitable XTIerror<I>(t_errno)</I>.<dt>[TSYSERR]<dd>A system error has occurred during execution of this function.</dl></blockquote><h4>RETURN VALUE</h4><blockquote>Upon successful completion, a value of zero is returned. Otherwise,a value of -1 is returned and<I>t_errno</I>is set to indicate the error.</blockquote><h4>SEE ALSO</h4><blockquote><i><a href="t_bind.html">t_bind()</a></i>.<br></blockquote><hr size=2 noshade><center><font size=2>UNIX ® is a registered Trademark of The Open Group.<br>Copyright © 1997 The Open Group<br> [ <a href="../index.html">Main Index</a> | <a href="../xshix.html">XSH</a> | <a href="../xcuix.html">XCU</a> | <a href="../xbdix.html">XBD</a> | <a href="../cursesix.html">XCURSES</a> | <a href="../xnsix.html">XNS</a> ]</font></center><hr size=2 noshade></body></html>⌨️ 快捷键说明
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