152 lines
4.7 KiB
HTML
152 lines
4.7 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>mkDPIAreYouThere()--Make a DPI AreYouThere Packet</title>
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<!-- Begin Header Records ========================================== -->
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<!-- All rights reserved. Licensed Materials Property of IBM -->
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</head>
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<body>
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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>mkDPIAreYouThere()--Make a DPI AreYouThere Packet</h2>
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<div class="box" style="width: 70%;">
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<br>
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Syntax<br>
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<pre>
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#include <qtossapi.h>
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unsigned char *mkDPIAreYouThere( void );
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</pre>
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<br>
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Service Program Name: QTOSSAPI<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: No<br>
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<!-- iddvc RMBR -->
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<br>
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</div>
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<p>The <strong>mkDPIAreYouThere()</strong> function makes a DPI AreYouThere
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packet and returns a pointer to the packet.</p>
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<br>
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<!-- Please NOTE: DO NOT DELETE THIS SECTION if this API has no authorities and locks. -->
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<!-- Instead, use the commented out coding below to indicate NONE. -->
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<h3>Authorities and Locks</h3>
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<!-- Use this if there are no authorities and locks. -->
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<p>None.</p>
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<br>
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<h3>Parameters</h3>
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<p>None.</p>
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<br>
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<h3>Return Value</h3>
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<table cellpadding="5">
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<!-- cols="10 90" -->
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<tr>
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<td align="left" valign="top"><em>value</em></td>
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<td align="left" valign="top">The value returned is a pointer to the DPI packet.
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<p>If successful, then a pointer to a static DPI packet buffer is returned. The
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first two bytes of the buffer (in network byte order) contain the length of the
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remaining packet. The <strong>DPI_PACKET_LEN()</strong> function can be used to
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calculate the total length of the DPI packet.</p>
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</td>
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</tr><tr>
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<td align="left" valign="top"><em>NULL</em></td>
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<td align="left" valign="top">If unsuccessful, then a NULL pointer is returned.</td>
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</tr>
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</table>
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<p>Be aware that the static buffer for the DPI packet is shared by other
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mkDPI<em>xxxx</em>() functions that create a serialized DPI packet.</p>
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<p>For more information, see "SNMP Subagent Problem Determination" in
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the <a href="../books/sc415412.pdf" target="_blank">Simple Network
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Management Protocol (SNMP) Support</a> <img src="wbpdf.gif" alt="Link to PDF">
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book.</p>
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<br>
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<h3>Usage Notes</h3>
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<p>The <strong>mkDPIAreYouThere()</strong> function creates a serialized DPI
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ARE_YOU_THERE packet that can then be sent to the DPI peer (normally the
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agent).</p>
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<p>If your connection to the agent is still intact, the agent will send a DPI
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RESPONSE with SNMP_ERROR_DPI_noError in the error code field and zero in the
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error index field. The RESPONSE will have no varbind data. If your connection
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is not intact, the agent may send a response with an error indication, or may
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not send a response at all.</p>
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<br>
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<h3>Related Information</h3>
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<ul>
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<li>The <<strong>qtossapi.h</strong>> file (see <a href="unix13.htm">Header
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Files for UNIX-Type Functions</a>) <br>
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<br>
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</li>
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<li><a href="dlensnmp.htm">DPI_PACKET_LEN()</a>--Get Length of DPI Packet</li>
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</ul>
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<p></p>
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<h3>Example</h3>
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<p>See <a href="../apiref/aboutapis.htm#codedisclaimer">Code disclaimer information</a>
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for information pertaining to code examples.</p>
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<pre>
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#include <qtossapi.h>
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unsigned char *pack_p;
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pack_p = mkDPIAreYouThere();
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if (pack_p) {
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/* Send the packet to the agent. */
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}
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/* Wait for response with waitDPIpacket(). */
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/* Normally the response should come back fairly quickly, */
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/* but it depends on the load of the agent. */
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</pre>
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<br>
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<hr>
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API introduced: V3R6
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<hr>
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<center>
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<tr align="center">
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<td valign="middle" align="center"><a href="#Top_Of_Page">Top</a> |
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<a href="unix.htm">UNIX-Type APIs</a> |
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<a href="aplist.htm">APIs by category</a> </td>
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</tr>
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</table></center>
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</body>
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</html>
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