124 lines
3.2 KiB
HTML
124 lines
3.2 KiB
HTML
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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<html>
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
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<meta name="Copyright" content="Copyright (c) 2006 by IBM Corporation">
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<title>freeaddrinfo--Free Address Information API</title>
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<!-- Begin Header Records -->
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<!-- All rights reserved. Licensed Materials Property of IBM -->
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<!-- US Government Users Restricted Rights -->
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<!-- Use, duplication or disclosure restricted by -->
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<!-- GSA ADP Schedule Contract with IBM Corp. -->
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<!-- Created for V5R2 by Chris Gloe -->
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<!-- Edited by Kersten Feb 02 -->
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<link rel="stylesheet" type="text/css" href="../rzahg/ic.css">
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</head>
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<body>
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<!-- End Header Records -->
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<!-- Java sync-link -->
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<script type="text/javascript" language="Javascript" src="../rzahg/synch.js">
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</script>
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<a name="Top_Of_Page"></a>
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<h2>freeaddrinfo()--Free Address
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Information</h2>
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<div class="box" style="width: 60%;">
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<br>
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Syntax
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<pre>
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#include <sys/socket.h>
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#include <netdb.h>
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void freeaddrinfo(struct addrinfo *ai);
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</pre>
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<br>
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Service Program Name: QSOSRV2<br>
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<!-- iddvc RMBR -->
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<br>
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Default Public Authority: *USE<br>
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<!-- iddvc RMBR -->
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<br>
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Threadsafe: Yes<br>
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<!-- iddvc RMBR -->
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<br>
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</div>
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<p>The <strong>freeaddrinfo()</strong> function frees one or more addrinfo
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structures returned by <a href="getaddrinfo.htm">getaddrinfo()</a>, along with
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any additional storage associated with those structures. If the
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<em>ai_next</em> field of the structure is not null, the entire list of
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structures is freed.</p>
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<br>
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<h3>Parameters</h3>
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<dl>
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<dt><strong>ai</strong></dt>
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<dd>(Input) The pointer to a <strong>struct addrinfo</strong> that was returned
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by <a href="getaddrinfo.htm">getaddrinfo()</a>.
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<p>The structure <strong>struct addrinfo</strong> is defined in
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<strong><netdb.h></strong>.</p>
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<pre>
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struct addrinfo {
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int ai_flags; /* AI_PASSIVE, AI_CANONNAME, AI_NUMERICHOST, .. */
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int ai_family; /* PF_xxx */
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int ai_socktype; /* SOCK_xxx */
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int ai_protocol; /* 0 or IPPROTO_xxx for IPv4 and IPv6 */
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socklen_t ai_addrlen; /* length of ai_addr */
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char *ai_canonname; /* canonical name for nodename */
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struct sockaddr *ai_addr; /* binary address */
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struct addrinfo *ai_next; /* next structure in linked list */
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};
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</pre>
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</dd>
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</dl>
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<br>
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<h3>Authorities</h3>
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<p>No authorization is required.</p>
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<br>
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<h3>Usage Notes</h3>
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<ol>
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<li>The <strong>freeaddrinfo()</strong> API supports the freeing of arbitrary
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sublists of an <em>addrinfo</em> list originally returned by <a href=
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"getaddrinfo.htm">getaddrinfo()</a>.</li>
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</ol>
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<br>
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<h3>Related Information</h3>
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<ul>
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<li><a href="getaddrinfo.htm">getaddrinfo()</a>--Get Address Information<br>
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<br>
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</li>
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</ul>
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<br>
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<br>
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<hr>
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API introduced: V5R2
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<hr>
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<center>
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<table cellpadding="2" cellspacing="2">
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<tr align="center">
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<td valign="middle" align="center"><a href="#Top_Of_Page">Top</a> | <a href=
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"unix.htm">UNIX-Type APIs</a> | <a href="aplist.htm">APIs by category</a> </td>
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</tr>
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</table>
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</center>
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</body>
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</html>
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