780 lines
23 KiB
HTML
780 lines
23 KiB
HTML
<!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>connect()--Establish Connection or Destination Address</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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<!-- Unix8 SCRIPT J converted by B2H R4.1 (346) (CMS) by V2KEA304 -->
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<!-- at RCHVMW2 on 17 Feb 1999 at 11:05:09 -->
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<!-- Edited by Kersten Feb 02 -->
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<!-- End Header Records -->
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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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<!-- 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>connect()--Establish Connection or Destination Address</h2>
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<div class="box" style="width: 60%;">
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<br>
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BSD 4.3 Syntax<br>
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<pre>
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#include <sys/types.h>
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#include <sys/socket.h>
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int connect(int <em>socket_descriptor</em>,
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struct sockaddr *<em>destination_address</em>,
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int <em>address_length</em>)
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</pre>
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<br>
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Service Program Name: QSOSRV1<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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<br>
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<div class="box" style="width: 60%;">
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<br>
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<a href="_xopen_source.htm">UNIX 98 Compatible Syntax</a><br>
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<pre>
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#define _XOPEN_SOURCE 520
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#include <sys/socket.h>
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int connect(int <em>socket_descriptor</em>,
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const struct sockaddr *<em>destination_address</em>,
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socklen_t <em>address_length</em>)
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</pre>
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<br>
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Service Program Name: QSOSRV1<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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<br>
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<p>The <em>connect()</em> function is used to establish a connection on a
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connection-oriented socket or establish the destination address on a
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connectionless socket.</p>
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<p> There are two versions of
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the API, as shown above. The base i5/OS API uses BSD 4.3 structures and
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syntax. The other uses syntax and structures compatible with the UNIX 98
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programming interface specifications. You can select the UNIX 98 compatible
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interface with the <a href="_xopen_source.htm">_XOPEN_SOURCE</a> macro.</p>
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<br>
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<h3>Parameters</h3>
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<dl>
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<dt><strong>socket_descriptor</strong></dt>
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<dd>(Input) The descriptor of the socket that is to be connected.<br>
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<br>
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</dd>
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<dt><strong>destination_address</strong></dt>
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<dd>(Input) A pointer to a buffer of type <strong>struct sockaddr</strong> that
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contains the destination address to which the socket is to be bound. The
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structure <strong>sockaddr</strong> is defined in
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<strong><sys/socket.h></strong>.
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<p> The BSD 4.3 structure
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is:</p>
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<pre>
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struct sockaddr {
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u_short sa_family;
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char sa_data[14];
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};
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</pre>
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<p>The BSD 4.4/UNIX 98 compatible structure is:</p>
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<pre>
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typedef uchar sa_family_t;
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struct sockaddr {
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uint8_t sa_len;
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sa_family_t sa_family;
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char sa_data[14];
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};
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</pre>
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<p>The BSD 4.4 <em>sa_len</em> field is the length of the address. The <em>sa_family</em> field identifies
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the address family to which the address belongs, and <em>sa_data</em> is the
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address whose format is dependent on the address family.</p>
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</dd>
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<dt><strong>address_length</strong></dt>
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<dd>(Input) The length of the <em>destination_address</em>.</dd>
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</dl>
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<br>
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<h3>Authorities</h3>
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<p>When the address type of the socket identified by the
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<strong>socket_descriptor</strong> is AF_INET and is running IP over SNA, the
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thread must have retrieve, insert, delete, and update authority to the APPC
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device. When the thread does not have this level of authority, then an
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<em>errno</em> of EACCES is returned.</p>
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<h3>Return Value</h3>
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<p><em>connect()</em> returns an integer. Possible values are:</p>
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<ul>
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<li>-1 (unsuccessful)</li>
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<li>0 (successful)</li>
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</ul>
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<br>
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<h3>Error Conditions</h3>
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<p>When a <em>connect()</em> fails, <em>errno</em> can be set to one of the
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following. For additional debugging information, see <a href=
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"snadbg.htm">Debugging IP over SNA Configurations</a>.</p>
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<table cellpadding="5">
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<!-- cols="25 75" -->
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<tr>
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<td align="left" valign="top"><em>[EACCES]</em></td>
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<td align="left" valign="top">Permission denied.
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<p>This error code indicates one of the following:</p>
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<ul>
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<li>The process does not have the appropriate privileges to connect to the
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address pointed to by the <em>destination_address</em> parameter.<br>
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<br>
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</li>
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<li>The socket pointed to by <em>socket_descriptor</em> is using a
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connection-oriented transport service, and the <em>destination_address</em>
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parameter specifies a TCP/IP limited broadcast address (internet address of all
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ones).<br>
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</li>
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</ul>
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</td>
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</tr>
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<tr>
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<td align="left" valign="top"><em>[EADDRINUSE]</em></td>
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<td align="left" valign="top">Address already in use.
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<p>This error code indicates one of the following:</p>
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<ul>
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<li>The <em>socket_descriptor</em> parameter points to a connection-oriented
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socket that has been bound to a local address that contained no wildcard
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values, and the <em>destination_address</em> parameter specified an address
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that matched the bound address.<br>
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<br>
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</li>
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<li>The <em>socket_descriptor</em> parameter points to a socket that has been
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bound to a local address that contained no wildcard values, and the
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<em>destination_address</em> parameter (also containing no wildcard values)
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specified an address that would have resulted in a connection with a non-unique
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association.<br>
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</li>
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</ul>
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</td>
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</tr>
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<tr>
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<td align="left" valign="top"><em>[EADDRNOTAVAIL]</em></td>
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<td align="left" valign="top">Address not available.
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<p>This error code is returned if
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the <em>socket_descriptor</em> parameter points to a socket with an address
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family of <samp>AF_INET</samp>
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or <samp>AF_INET6</samp> and
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either a port was not available or a route to the address specified by the
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<em>destination_address</em> parameter could not be found.
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</p>
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</td>
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</tr>
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<tr>
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<td align="left" valign="top"><em>[EAFNOSUPPORT]</em></td>
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<td align="left" valign="top">The type of socket is not supported in this
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protocol family.
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<p>The address family specified in the address structure pointed to by
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<em>destination_address</em> parameter cannot be used with the socket pointed
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to by the <em>socket_descriptor</em> parameter.</p>
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</td>
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</tr>
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<tr>
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<td align="left" valign="top"><em>[EALREADY]</em></td>
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<td align="left" valign="top">Operation already in progress.
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<p>A previous <em>connect()</em> function had already been issued for the
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socket pointed to by the <em>socket_descriptor</em> parameter, and has yet to
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be completed. This error code is returned only on sockets that use a
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connection-oriented transport service.</p>
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</td>
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</tr>
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<tr>
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<td align="left" valign="top"><em>[EBADF]</em></td>
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<td align="left" valign="top">Descriptor not valid.</td>
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</tr>
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<tr>
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<td align="left" valign="top"><em>[ECONNREFUSED]</em></td>
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<td align="left" valign="top">The destination socket refused an attempted
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connect operation.
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<p>This error occurs when there is no application that is bound to the address
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specified by the <em>destination_address</em> parameter.</p>
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</td>
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</tr>
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<tr>
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<td align="left" valign="top"><em>[EFAULT]</em></td>
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<td align="left" valign="top">Bad address.
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<p>The system detected an address which was not valid while attempting to
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access the <em>destination_address</em> parameter.</p>
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</td>
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</tr>
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<tr>
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<td align="left" valign="top"><em>[EHOSTUNREACH]</em></td>
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<td align="left" valign="top">A route to the remote host is not available.
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<p>This error code is returned on sockets that use the <samp>AF_INET</samp>
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and <samp>AF_INET6</samp> address families.</p>
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</td>
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</tr>
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<tr>
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<td align="left" valign="top"><em>[EINPROGRESS]</em></td>
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<td align="left" valign="top">Operation in progress.
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<p>The <em>socket_descriptor</em> parameter points to a socket that is marked
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as nonblocking and the connection could not be completed immediately. This
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error code is returned only on sockets that use a connection-oriented transport
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service.</p>
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</td>
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</tr>
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<tr>
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<td align="left" valign="top"><em>[EINTR]</em></td>
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<td align="left" valign="top">Interrupted function call.</td>
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</tr>
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<tr>
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<td align="left" valign="top"><em>[EINVAL]</em></td>
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<td align="left" valign="top">Parameter not valid.
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<p>This error code indicates one of the following:</p>
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<ul>
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<li>The <em>address_length</em> parameter specifies a length that is negative
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or not valid for the address family.<br>
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</li>
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<li>The <samp>AF_INET</samp> or
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<samp>AF_INET6</samp> socket is
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of type <samp>SOCK_STREAM</samp>, and a previous <em>connect()</em> has already
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completed unsuccessfully. Only one connection attempt is allowed on a
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connection-oriented socket.
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<p><strong>Note:</strong> For sockets that have an address family of
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<samp>AF_UNIX</samp>, or <samp>AF_UNIX_CCSID</samp>, if a <em>connect()</em>
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fails, a subsequent <em>connect()</em> is allowed, even if the transport
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service being used is connection-oriented.</p>
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</li>
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<li><em>connect()</em> cannot be issued on the socket pointed to by the
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<em>socket_descriptor</em> parameter because the socket is using a
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connection-oriented transport service (with an address family of
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<samp>AF_INET</samp> or
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<samp>AF_INET6</samp>), and a
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<em>shutdown()</em> that disabled the sending of data was previously
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issued.<br>
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<br>
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</li>
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<li>The destination address pointed to by the <em>destination_address</em>
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parameter specified an address that was not valid.<br>
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<br>
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</li>
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<li>The <em>socket_descriptor</em> points to a socket with an address family of
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<samp>AF_UNIX_CCSID</samp>, and the CCSID specified in <em>sunc_qlg</em> in the
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<strong>sockaddr_unc</strong> structure (pointed to by <em>local_address</em>)
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cannot be converted to the current default CCSID for integrated file system
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path names.<br>
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<br>
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</li>
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<li>The <em>socket_descriptor</em> points to a socket with an address family of
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<samp>AF_UNIX_CCSID</samp>, and there was an incomplete character or shift
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state sequence at the end of <em>sunc_path</em> in the
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<strong>sockaddr_unc</strong> structure (pointed to by
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<em>local_address</em>).<br>
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<br>
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</li>
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<li>The <em>socket_descriptor</em> points to a socket with an address family of
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<samp>AF_UNIX_CCSID</samp>, and the <strong>sockaddr_unc</strong> structure
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(pointed to by <em>local_address</em>) was not valid:<br>
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<br>
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<ul>
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<li>The sunc_format was not set to SO_UNC_DEFAULT or SO_UNC_USE_QLG.<br>
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<br>
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</li>
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<li>The sunc_zero was not initialized to zeros.<br>
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<br>
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</li>
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<li>The sunc_format field was set to SO_UNC_USE_QLG and the sunc_qlg structure
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was not valid:<br>
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<br>
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<ul>
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<li>The path type was less than 0 or greater than 3.<br>
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<br>
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</li>
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<li>The path length was less than 0 or out of bounds. For example, a single
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byte path name was greater than 126 bytes or a double byte path name was
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greater than 252 bytes.<br>
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<br>
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</li>
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<li>A reserved field was not initialized to zeros.</li>
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</ul>
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</li>
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</ul>
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<br></li>
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</ul>
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</td>
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</tr>
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<tr>
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<td align="left" valign="top"><em>[EIO]</em></td>
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<td align="left" valign="top">Input/output error.</td>
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</tr>
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<tr>
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<td align="left" valign="top"><em>[EISCONN]</em></td>
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<td align="left" valign="top">A connection has already been established.
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<p>This error code is returned only on sockets that use a connection-oriented
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transport service.</p>
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</td>
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</tr>
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<tr>
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<td align="left" valign="top"><em>[ELOOP]</em></td>
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<td align="left" valign="top">A loop exists in symbolic links encountered
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during pathname resolution.
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<p>This error code is only returned on sockets that use the
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<samp>AF_UNIX</samp> or <samp>AF_UNIX_CCSID</samp> address family.</p>
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</td>
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</tr>
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<tr>
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<td align="left" valign="top"><em>[ENAMETOOLONG]</em></td>
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<td align="left" valign="top">File name too long.
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<p>This error code is only returned on sockets that use the
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<samp>AF_UNIX</samp> or <samp>AF_UNIX_CCSID</samp> address family.</p>
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</td>
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</tr>
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<tr>
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<td align="left" valign="top"><em>[ENETDOWN]</em></td>
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<td align="left" valign="top">The network is not currently available.</td>
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</tr>
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<tr>
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<td align="left" valign="top"><em>[ENETUNREACH]</em></td>
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<td align="left" valign="top">Cannot reach the destination network.
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<p>This error code is returned for sockets that use the
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<samp>AF_INET</samp> or <samp>AF_INET6</samp> address families, the address specified by the
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<em>destination_address</em> parameter requires the use of a router, and the
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socket option <samp>SO_DONTROUTE</samp> is currently set on.</p>
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</td>
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</tr>
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<tr>
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<td align="left" valign="top"><em>[ENOBUFS]</em></td>
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<td align="left" valign="top">There is not enough buffer space for the
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requested operation.</td>
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</tr>
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<tr>
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<td align="left" valign="top"><em>[ENOENT]</em></td>
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<td align="left" valign="top">No such file or directory.
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<p>This error code is only returned on sockets that use the
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<samp>AF_UNIX</samp> or <samp>AF_UNIX_CCSID</samp> address family.</p>
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</td>
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</tr>
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<tr>
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<td align="left" valign="top"><em>[ENOSYS]</em></td>
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<td align="left" valign="top">Function not implemented.
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<p>This error code is only returned on sockets that use the
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<samp>AF_UNIX</samp> and <samp>AF_UNIX_CCSID</samp> address families.</p>
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</td>
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</tr>
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<tr>
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<td align="left" valign="top"><em>[ENOTDIR]</em></td>
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<td align="left" valign="top">Not a directory.</td>
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</tr>
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<tr>
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<td align="left" valign="top"><em>[ENOTSOCK]</em></td>
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<td align="left" valign="top">The specified descriptor does not reference a socket.
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<p>This error code is only returned on sockets that use the
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<samp>AF_UNIX</samp> or <samp>AF_UNIX_CCSID</samp> address family.</p>
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</td>
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</tr>
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<tr>
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<td align="left" valign="top"><em>[EOPNOTSUPP]</em></td>
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<td align="left" valign="top">Operation not supported.
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<p><em>connect()</em> is not allowed on a passive socket (a socket for which a
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<em>listen()</em> has been done).</p>
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</td>
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</tr>
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<tr>
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<td align="left" valign="top"><em>[EPROTOTYPE]</em></td>
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<td align="left" valign="top">The socket type or protocols are not compatible.
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<p>This error code is only returned on sockets that use the
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<samp>AF_UNIX</samp> or <samp>AF_UNIX_CCSID</samp> address family.</p>
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</td>
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</tr>
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<tr>
|
|
<td align="left" valign="top"><em>[ETIMEDOUT]</em></td>
|
|
<td align="left" valign="top">A remote host did not respond within the timeout
|
|
period.
|
|
|
|
<p>This error code is returned when connection establishment times out. No
|
|
connection is established. A possible cause may be that the partner application
|
|
is bound to the address specified by the <em>destination_address</em>
|
|
parameter, but the partner application has not yet issued a
|
|
<em>listen()</em>.</p>
|
|
</td>
|
|
</tr>
|
|
|
|
<tr>
|
|
<td align="left" valign="top"><em>[EUNKNOWN]</em></td>
|
|
<td align="left" valign="top">Unknown system state.</td>
|
|
</tr>
|
|
|
|
<tr>
|
|
<td align="left" valign="top"><em>[EUNATCH]</em></td>
|
|
<td align="left" valign="top">The protocol required to support the specified
|
|
address family is not available at this time.</td>
|
|
</tr>
|
|
|
|
<tr>
|
|
<td align="left" valign="top"><em>[EPROTO]</em></td>
|
|
<td align="left" valign="top">An underlying protocol error has occurred.</td>
|
|
</tr>
|
|
</table>
|
|
|
|
<br>
|
|
<br>
|
|
|
|
|
|
<h3>Error Messages</h3>
|
|
|
|
<table width="100%" cellpadding="5">
|
|
<!-- cols="15 85" -->
|
|
<tr>
|
|
<th align="left" valign="top">Message ID</th>
|
|
<th align="left" valign="top">Error Message Text</th>
|
|
</tr>
|
|
|
|
<tr>
|
|
<td width="15%" valign="top">CPE3418 E</td>
|
|
<td width="85%" valign="top">Possible APAR condition or hardware failure.</td>
|
|
</tr>
|
|
|
|
<tr>
|
|
<td align="left" valign="top">CPF9872 E</td>
|
|
<td align="left" valign="top">Program or service program &1 in library
|
|
&2 ended. Reason code &3.</td>
|
|
</tr>
|
|
|
|
<tr>
|
|
<td align="left" valign="top">CPFA081 E</td>
|
|
<td align="left" valign="top">Unable to set return value or error code.</td>
|
|
</tr>
|
|
</table>
|
|
|
|
<br>
|
|
<br>
|
|
|
|
|
|
<h3>Usage Notes</h3>
|
|
|
|
<ol>
|
|
<li><em>connect()</em> establishes an end-to-end connection. It can only be
|
|
issued once on sockets that have an address family of <samp>AF_INET</samp> or <samp>AF_INET6</samp> and are of type
|
|
<samp>SOCK_STREAM</samp>. (If the <em>connect()</em> fails to successfully
|
|
establish the connection, you must close the socket and create a new socket if
|
|
you wish to try to establish a connection again.) For sockets of other address
|
|
families that are connection-oriented, you may simply try the
|
|
<em>connect()</em> again to the same or to a new address. <em>connect()</em>
|
|
can be issued on sockets of type <samp>SOCK_DGRAM</samp> and
|
|
<samp>SOCK_RAW</samp> multiple times. Each time <em>connect()</em> is issued,
|
|
it changes the destination address from which packets may be received and to
|
|
which packets may be sent.
|
|
|
|
<p><strong>Note:</strong> Issuing <em>connect()</em> on sockets of type
|
|
<samp>SOCK_DGRAM</samp> and <samp>SOCK_RAW</samp> is not recommended because of
|
|
dynamic route reassignment (picking a new route when a route that was
|
|
previously used is no longer available). When this reassignment occurs, the
|
|
next packet from the partner program can be received from a different IP
|
|
address than the address your application specified on the <em>connect()</em>.
|
|
This results in the data being discarded.</p>
|
|
</li>
|
|
|
|
<li>When a <em>connect()</em> is issued successfully on sockets with an address
|
|
family of <samp>AF_INET</samp>
|
|
or <samp>AF_INET6</samp> and
|
|
type of <samp>SOCK_DGRAM</samp>, errors relating to the unsuccessful delivery
|
|
of outgoing packets may be received as <em>errno</em> values. For example,
|
|
assume an application has issued the <em>connect()</em> for a
|
|
<em>destination_address</em> at which no server is currently bound for the port
|
|
specified in <em>destination_address</em>, and the application sends several
|
|
packets to that <em>destination_address</em>. Eventually, one of the
|
|
application output functions (for example, <em>send()</em>) will receive an
|
|
error <samp>[ECONNREFUSED]</samp>. If the application had not issued the
|
|
<em>connect()</em>, this diagnostic information would have been discarded.<br>
|
|
<br>
|
|
</li>
|
|
|
|
<li>A connectionless transport socket for which a <em>connect()</em> has been
|
|
issued can be disconnected by either setting the <em>destination_address</em>
|
|
parameter to NULL or setting the <em>address_length</em> parameter to zero, and
|
|
issuing another <em>connect()</em>.<br>
|
|
<br>
|
|
</li>
|
|
|
|
<li>For sockets that use a connection-oriented transport service and an address
|
|
family of <samp>AF_INET</samp>
|
|
or <samp>AF_INET6</samp> there
|
|
is a notion of a directed connect. A <strong>directed connect</strong> allows
|
|
two socket endpoints (socket A and socket B) to be connected without having a
|
|
passive socket to accept an incoming connection request. The idea is for both
|
|
sockets to bind to addresses. Socket A then issues a <em>connect()</em>
|
|
specifying the address that socket B is bound to, and socket B issues a
|
|
<em>connect()</em> specifying the address that socket A is bound to. At this
|
|
point sockets A and B are connected, and data transfer between the sockets can
|
|
now take place.<br>
|
|
<br>
|
|
</li>
|
|
|
|
<li>For sockets with an address family of <samp>AF_INET</samp> or <samp>AF_INET6</samp>, the following is applicable:
|
|
|
|
<ul>
|
|
<li>For sockets of type <samp>SOCK_STREAM</samp> or <samp>SOCK_DGRAM</samp>, a
|
|
local port number is implicitly assigned to the socket if the
|
|
<em>connect()</em> is issued without previously issuing a <em>bind()</em>.</li>
|
|
</ul>
|
|
|
|
<br>
|
|
</li>
|
|
|
|
<li>For sockets with an address family of <samp>AF_INET</samp>, the following
|
|
is applicable:
|
|
|
|
<ul>
|
|
<li>If the destination address has an IP address that is set to zero, the
|
|
system selects an appropriate destination IP address using the following
|
|
algorithm:
|
|
|
|
<ul>
|
|
<li>If the socket is bound to an IP address of zero, a loopback address is
|
|
used. If a loopback interface is not configured (or the associated interface is
|
|
not active), the address of the next available interface that is active is
|
|
used. Otherwise, the destination IP address is not changed (and results in an
|
|
error on the <em>connect()</em>).<br>
|
|
<br>
|
|
</li>
|
|
|
|
<li>If the socket is bound to a nonzero IP address, then the IP address that
|
|
the socket is bound to is used.</li>
|
|
</ul>
|
|
|
|
<br>
|
|
</li>
|
|
|
|
<li>If the destination address has an internet IP address that is set to
|
|
<samp>INADDR_BROADCAST</samp> (hex 0xFFFFFFFF), the system selects an
|
|
appropriate destination IP address using the following algorithm:
|
|
|
|
<ul>
|
|
<li>If the socket is bound to an IP address of zero and:
|
|
|
|
<ul>
|
|
<li>It is using a connectionless transport service, then the first active
|
|
interface found that supports broadcast frames is used by the networking
|
|
software.<br>
|
|
</li>
|
|
|
|
<li>It is using a connection-oriented transport service, an error is returned
|
|
(<samp>[EACCES]</samp>).</li>
|
|
</ul>
|
|
|
|
<br>
|
|
</li>
|
|
|
|
<li>If the socket is bound to a nonzero IP address and is using a
|
|
connectionless transport service and:
|
|
|
|
<ul>
|
|
<li>The address that the socket is bound to denotes an interface that supports
|
|
broadcast frames (for example, not a loopback address), then the limited
|
|
broadcast address of the IP address that the socket is bound to is used.<br>
|
|
</li>
|
|
|
|
<li>The address that the socket is bound to is a loopback address, an error is
|
|
returned (<samp>[EINVAL]</samp>).</li>
|
|
</ul>
|
|
|
|
<br>
|
|
</li>
|
|
|
|
<li>If the socket is bound to a nonzero IP address and it is using a
|
|
connection-oriented transport service, an error is returned
|
|
(<samp>[EACCES]</samp>).</li>
|
|
</ul>
|
|
</li>
|
|
</ul>
|
|
|
|
<br>
|
|
</li>
|
|
|
|
<li>For sockets with an address family of <samp>AF_UNIX</samp> or
|
|
<samp>AF_UNIX_CCSID</samp>, the following is applicable:<br>
|
|
<ul>
|
|
<li>There is no implicit binding of an address to the socket. The socket is
|
|
unnamed if the <em>connect()</em> is issued without previously issuing a
|
|
<em>bind()</em>.<br>
|
|
<br>
|
|
</li>
|
|
|
|
<li>The process must have write access to the destination address and search
|
|
permission along all the components of the path.<br>
|
|
<br>
|
|
</li>
|
|
|
|
<li>For <samp>AF_UNIX</samp>, the path name is assumed to be in the default
|
|
coded character set identifier (CCSID) currently in effect for the job. For
|
|
<samp>AF_UNIX_CCSID</samp>, the path name is assumed to be in the format and
|
|
coded character set identifier (CCSID) specified in the
|
|
<strong>sockaddr_unc</strong> (pointed to by <em>local_address</em>).</li>
|
|
</ul>
|
|
|
|
<br>
|
|
<li>When you develop in C-based
|
|
languages and an application is compiled with the _XOPEN_SOURCE macro defined
|
|
to the value 520 or greater, the <em>connect()</em> API is mapped to
|
|
<em>qso_connect98()</em>.</li>
|
|
</ol>
|
|
|
|
<br>
|
|
|
|
|
|
<h3>Related Information</h3>
|
|
|
|
<ul>
|
|
<li><a href="_xopen_source.htm">_XOPEN_SOURCE</a>--Using _XOPEN_SOURCE for the UNIX 98
|
|
compatible interface<br>
|
|
<br>
|
|
</li>
|
|
|
|
<li><a href="fcntl.htm">fcntl()</a>--Perform File Control Command<br>
|
|
<br>
|
|
</li>
|
|
|
|
<li><a href="ioctl.htm">ioctl()</a>--Perform I/O Control Request<br>
|
|
<br>
|
|
</li>
|
|
|
|
<li><a href="bind.htm">bind()</a>--Set Local Address for Socket<br>
|
|
<br>
|
|
</li>
|
|
|
|
<li><a href="accept.htm">accept()</a>--Wait for Connection Request and Make
|
|
Connection<br>
|
|
<br>
|
|
</li>
|
|
|
|
<li><a href="sendto.htm">sendto()</a>--Send Data<br>
|
|
<br>
|
|
</li>
|
|
|
|
<li><a href="sendms.htm">sendmsg()</a>--Send Data or Descriptors or Both</li>
|
|
</ul>
|
|
|
|
<br>
|
|
<hr>
|
|
API introduced: V3R1
|
|
|
|
<hr>
|
|
<center>
|
|
<table cellpadding="2" cellspacing="2">
|
|
<tr align="center">
|
|
<td valign="middle" align="center"><a href="#Top_Of_Page">Top</a> | <a href=
|
|
"unix.htm">UNIX-Type APIs</a> | <a href="aplist.htm">APIs by category</a></td>
|
|
</tr>
|
|
</table></center>
|
|
</body>
|
|
</html>
|
|
|