96 lines
5.3 KiB
HTML
96 lines
5.3 KiB
HTML
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<meta name="DC.Title" content="Commtrace classes" />
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<title>Commtrace classes</title>
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<body id="rzahhcommtrace"><a name="rzahhcommtrace"><!-- --></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">Commtrace classes</h1>
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<div><p></p>
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<div class="section"><p>The IBM<sup>®</sup> Toolbox
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for Java™ commtrace
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classes enable your Java programs to work with communications
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trace data for a specified LAN (Ethernet or token ring) line description.
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The commtrace package includes a class that you can run as a standalone utility
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program to format communications trace data.</p>
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<p>When you dump a communications
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trace for an iSeries™ server
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to a stream file, the information is saved in a binary format. The commtrace
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classes enable you to work with the various components of the stream file.</p>
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<div class="note"><span class="notetitle">Note:</span> Communications
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trace files may contain confidential information, for example, unencrypted
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passwords. When the communications trace file is on the iSeries server,
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only users who have *SERVICE special authority can access the trace data.
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If you move the file to a client, make sure that you protect the file in
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an appropriate manner. For more information about communications traces,
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see the links at the bottom of this page. </div>
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<p>Use the commtrace classes
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to perform the following tasks:</p>
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<ul><li>Format the raw trace data.</li>
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<li>Parse any of the data to extract the information you want. You can parse
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both raw and formatted data, provided that you used the commtrace classes
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to format the data.</li>
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</ul>
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<p>For a visual representation that shows how the commtrace classes represent
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the structures in a communications trace file, see the following page:</p>
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<blockquote><a href="rzahhcommtracemodel.htm#rzahhcommtracemodel">Commtrace model</a></blockquote>
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<p>The commtrace
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package includes the following classes:</p>
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<blockquote> <p><a href="rzahhcommtraceformat.htm#rzahhcommtraceformat">Format and FormatProperties classes</a>:
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The Format class reads both raw data and formatted data from a communications
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trace. FormatProperties sets the properties for your Format object, such
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as start and end times, IP addresses, ports, and so on.</p>
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<div class="note"><span class="notetitle">Note:</span> You can
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also run the Format class as a standalone program.</div>
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<p><a href="rzahhcommtraceprolog.htm#rzahhcommtraceprolog">Prolog class</a>:
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Retrieves information from the initial 256-byte section of an iSeries server
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communications trace.</p>
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<p><a href="rzahhcommtraceframe.htm#rzahhcommtraceframe">Frame class</a>:
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Retrieves information about the frames of the communications trace.</p>
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<p><a href="rzahhcommtracelanheader.htm#rzahhcommtracelanheader">LanHeader class</a>: Retrieves
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information from the section of data that occurs once, near the beginning
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of a frame. This section typically contains hardware-specific information
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that includes general information about the frame, such as the frame number,
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data length, and so on.</p>
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<p><a href="rzahhcommtraceippacket.htm#rzahhcommtraceippacket">IPPacket class</a>:
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Retrieves information from the data in the packet. IPPacket is the abstract
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parent class for the different types of data packets that are supported by
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the commtrace package.</p>
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<p><a href="rzahhcommtraceheader.htm#rzahhcommtraceheader">Header class</a>:
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Retrieves information from the packet header and the associated data. Header
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is the abstract parent class for the different types of packet headers that
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are supported by the commtrace package.</p>
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</blockquote>
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<p>Most of the remaining
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classes in the com.ibm.as400.commtrace package are specific to the type of
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trace data that you want to work with. For more information about communications
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traces and about all the commtrace classes, refer to following pages:</p>
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<blockquote><p><a href="../rzaku/rzakucommunictrace.htm">Communications
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trace</a></p>
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</blockquote>
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</div>
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</div>
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