93 lines
5.4 KiB
HTML
93 lines
5.4 KiB
HTML
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<!DOCTYPE html
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PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html lang="en-us" xml:lang="en-us">
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<meta name="DC.Type" content="task" />
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<meta name="DC.Title" content="Establish client/server communications" />
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<meta name="abstract" content="Learn the process for starting and ending communication between clients and host servers." />
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<meta name="description" content="Learn the process for starting and ending communication between clients and host servers." />
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<meta name="copyright" content="(C) Copyright IBM Corporation 1998, 2006" />
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<link rel="stylesheet" type="text/css" href="./ic.css" />
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<title>Establish client/server communications</title>
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</head>
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<body id="rzaiimst28"><a name="rzaiimst28"><!-- --></a>
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<!-- Java sync-link --><script language="Javascript" src="../rzahg/synch.js" type="text/javascript"></script>
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<h1 class="topictitle1">Establish client/server communications</h1>
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<div><p>Learn the process for starting and ending communication between
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clients and host servers.</p>
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<div class="section"><p>This topic also includes each server's port numbers, and a description
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of server daemons and their role in communication.</p>
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<p>Client/Server communication
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is established in the following steps:</p>
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</div>
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<ol><li><span>To initiate a server job that uses sockets communications support,
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the client system connects to a particular server's port number.</span></li>
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<li><span>A server daemon must be started (with the STRHOSTSVR command) to
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listen for and accept the client's connection request. Upon accepting the
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connection request, the server daemon issues an internal request to attach
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the client's connection to a server job.</span></li>
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<li><span>This server job may be a prestarted job or, if prestart jobs are
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not used, a batch job that is submitted when the client connection request
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is processed. The server job handles any further communications with the client.
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The initial data exchange includes a request that identifies authentication
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tokens that are associated with the client user. A user profile and password,
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or a Kerberos ticket, are examples of these tokens.</span></li>
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<li><span>Once the authentication tokens are validated, the server job switches
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to use the i5/OS™ user
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profile associated with those tokens, and changes the job by using many of
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the attributes defined for the user profile, such as accounting code and output
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queue.</span></li>
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</ol>
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<div class="section"><p><strong>Server to client communications</strong></p>
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<p>iSeries™ Access
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for Windows<sup>®</sup> uses
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TCP/IP to communicate with the iSeries system servers. The optimized
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servers use i5/OS sockets
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support to communicate with clients. The i5/OS sockets support is compatible with
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Berkeley Software Distributions 4.3 sockets over TCP/IP. Sockets support is
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provided with the 5722-TC1 product that is installed on the iSeries server.</p>
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<p>See
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the TCP/IP Configuration and Reference manual for more information about communications.</p>
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<p>For
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more information, see:</p>
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</div>
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</div>
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<div>
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<ul class="ullinks">
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<li class="ulchildlink"><strong><a href="rzaiimstsvrprtnum.htm">Host Servers port numbers</a></strong><br />
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Each type of server has its own server daemon, which listens on a port for incoming client connection requests.</li>
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<li class="ulchildlink"><strong><a href="rzaiistrhostsvr.htm">Start host servers</a></strong><br />
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To start Host Servers, use the <span class="cmdname">STRHOSTSVR</span> CL
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command. </li>
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<li class="ulchildlink"><strong><a href="rzaiiendinghost.htm">End host servers</a></strong><br />
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To end Host servers, use the ENDHOSTSVR CL command.</li>
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</ul>
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<div class="familylinks">
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<div class="parentlink"><strong>Parent topic:</strong> <a href="rzaiimst27.htm" title="Describes the client/server communication process, and how to manage it. Additionally, this topic lists relevant iSeries system values and subsystems, and describes how to identify, display and manage server jobs on the iSeries.">Use i5/OS host servers</a></div>
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</div>
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<div class="relinfo"><strong>Related information</strong><br />
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<div><a href="../rzai2/rzai2kickoff.htm">TCP/IP setup</a></div>
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</div>
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</div>
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</body>
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</html>
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