76 lines
4.0 KiB
HTML
76 lines
4.0 KiB
HTML
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<?xml version="1.0" encoding="UTF-8"?>
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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="reference" />
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<meta name="DC.Title" content="Header class" />
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<meta name="abstract" content="" />
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<meta name="description" content="" />
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<meta name="copyright" content="(C) Copyright IBM Corporation 2006" />
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<meta name="DC.Rights.Owner" content="(C) Copyright IBM Corporation 2006" />
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<meta name="DC.Format" content="XHTML" />
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<meta name="DC.Identifier" content="rzahhcommtraceheader" />
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<!-- All rights reserved. Licensed Materials Property of IBM -->
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<link rel="stylesheet" type="text/css" href="./ic.css" />
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<title>Header class</title>
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</head>
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<body id="rzahhcommtraceheader"><a name="rzahhcommtraceheader"><!-- --></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">Header class</h1>
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<div><p></p>
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<div class="section"><p>The <a href="javadoc/com/ibm/as400/util/commtrace/Header.html">Header class</a> is the abstract superclass
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for creating classes that represent specific kinds of packet headers. Packet
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headers include the associated data (or payload), which can be other headers
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and payloads. The subclasses of Header include:</p>
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<ul><li>ARPHeader</li>
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<li>ExtHeader</li>
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<li>ICMP4Header</li>
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<li>ICMP6Header</li>
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<li>IP4Header</li>
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<li>IP6Header</li>
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<li>TCPHeader</li>
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<li>UDPHeader</li>
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<li>UnknownHeader</li>
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</ul>
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<p>Header classes enable you to retrieve the data for the header and
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the payload. One header can encapsulate other headers and their payloads.</p>
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<p>Creating
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an instance of a Packet class automatically creates the appropriate Header
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object. The Header classes provide methods that allow you to perform a variety
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of actions that include the following:</p>
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<ul><li>Return the length, name, and type of the header</li>
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<li>Retrieve the data in the header as a byte array</li>
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<li>Retrieve the next header in the packet</li>
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<li>Retrieve the payload as a byte array, ASCII string, and hexadecimal string</li>
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<li>Return all the header data as an unformatted String </li>
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<li>Return specific data from the header as a formatted String</li>
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</ul>
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</div>
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<div class="section"><h4 class="sectiontitle">Javadoc reference documentation</h4><p>For more information
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about the Header classes, see the following Javadoc reference documentation:</p>
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<blockquote> <p><a href="javadoc/com/ibm/as400/util/commtrace/Header.html">Header</a></p>
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<p><a href="javadoc/com/ibm/as400/util/commtrace/ARPHeader.html">ARPHeader</a></p>
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<p><a href="javadoc/com/ibm/as400/util/commtrace/ExtHeader.html">ExtHeader</a></p>
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<p><a href="javadoc/com/ibm/as400/util/commtrace/ICMP4Header.html">ICMP4Header</a></p>
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<p><a href="javadoc/com/ibm/as400/util/commtrace/ICMP6Header.html">ICMP6Header</a></p>
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<p><a href="javadoc/com/ibm/as400/util/commtrace/IP4Header.html">IP4Header</a></p>
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<p><a href="javadoc/com/ibm/as400/util/commtrace/IP6Header.html">IP6Header</a></p>
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<p><a href="javadoc/com/ibm/as400/util/commtrace/TCPHeader.html">TCPHeader</a></p>
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<p><a href="javadoc/com/ibm/as400/util/commtrace/UDPHeader.html">UDPHeader</a></p>
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<p><a href="javadoc/com/ibm/as400/util/commtrace/UnknownHeader.html">UnknownHeader</a></p>
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</blockquote>
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</div>
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</div>
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</body>
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</html>
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