103 lines
5.7 KiB
HTML
103 lines
5.7 KiB
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<title>cwbCO_SetIPAddressLookupMode</title>
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<body id="cwbco_setipaddresslookupmode"><a name="cwbco_setipaddresslookupmode"><!-- --></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"><span class="apiname">cwbCO_SetIPAddressLookupMode</span></h1>
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<div><div class="section"><h4 class="sectiontitle">Purpose</h4><p>This function sets, for the specified system
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object, when iSeries™ Access
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for Windows<sup>®</sup> dynamically
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will lookup the iSeries system's
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IP address when a connection is to be made. If the system name that is specified
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when <span class="apiname">cwbCO_CreateSystem</span> or <span class="apiname">cwbCO_CreateSystemLike</span> was
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called is an actual IP address, this setting is ignored, because iSeries Access
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for Windows never
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needs to lookup the address.</p>
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</div>
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<div class="section"><h4 class="sectiontitle">Syntax</h4><pre>
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UINT CWB_ENTRY cwbCO_SetIPAddressLookupMode(
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cwbCO_SysHandle system,
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cwbCO_IPAddressLookupMode mode );</pre>
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</div>
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<div class="section"><h4 class="sectiontitle">Parameters</h4><dl><dt class="dlterm">cwbCO_SysHandle system - input</dt>
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<dd>Handle that previously was returned from <span class="apiname">cwbCO_CreateSystem</span> or <span class="apiname">cwbCO_CreateSystemLike</span>.
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It identifies the iSeries system.</dd>
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<dt class="dlterm">cwbCO_IPAddressLookupMode mode - input</dt>
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<dd>Specifies when the dynamic address lookup can occur. Possible values are: <dl><dt class="dlterm">CWBCO_IPADDR_LOOKUP_ALWAYS</dt>
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<dd>Every time a connection is to occur, dynamically lookup the iSeries system's
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IP address.</dd>
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<dt class="dlterm">CWBCO_IPADDR_LOOKUP_1HOUR</dt>
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<dd>Lookup the IP address dynamically if it has been at least one hour since
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the last lookup for this iSeries system.</dd>
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<dt class="dlterm">CWBCO_IPADDR_LOOKUP_1DAY</dt>
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<dd>Lookup the IP address dynamically if it has been at least one day since
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the last lookup for this iSeries system.</dd>
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<dt class="dlterm">CWBCO_IPADDR_LOOKUP_1WEEK</dt>
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<dd>Lookup the IP address dynamically if it has been at least one week since
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the last lookup for this iSeries system.</dd>
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<dt class="dlterm">CWBCO_IPADDR_LOOKUP_NEVER</dt>
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<dd>Never dynamically lookup the IP address of this iSeries system, always use the IP address
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that was last used for this iSeries system on this PC.</dd>
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<dt class="dlterm">CWBCO_IPADDR_LOOKUP_AFTER_STARTUP</dt>
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<dd>Lookup the IP address dynamically if Windows has been re-started since the
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last lookup for this iSeries system.</dd>
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</dl>
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</dd>
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</dl>
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</div>
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<div class="section"><h4 class="sectiontitle">Return Codes</h4><p>The following list shows common return
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values:</p>
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<dl><dt class="dlterm">CWB_OK</dt>
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<dd>Successful completion.</dd>
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<dt class="dlterm">CWB_INVALID_API_HANDLE</dt>
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<dd>Invalid system handle.</dd>
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<dt class="dlterm">CWB_INVALID_PARAMETER </dt>
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<dd>The mode parameter is an invalid value.</dd>
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<dt class="dlterm">CWB_RESTRICTED_BY_POLICY</dt>
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<dd>A policy exists that prohibits the user from changing this value.</dd>
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<dt class="dlterm">CWB_INV_AFTER_SIGNON</dt>
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<dd>Signon has successfully occurred by using the specified system object,
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so this setting no longer may be changed.</dd>
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</dl>
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</div>
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<div class="section"><h4 class="sectiontitle">Usage</h4><p>This API cannot be used after a successful
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signon has occurred for the specified system object. A signon has occurred
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if either <span class="apiname">cwbCO_Signon</span> or <span class="apiname">cwbCO_Connect</span> has
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been called successfully for this system object.</p>
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<p>Setting this to a value
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other than CWB_IPADDR_LOOKUP_ALWAYS could shorten the time to connect to the iSeries system,
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since the dynamic lookup may cause network traffic and take many seconds to
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complete. If the dynamic lookup is not performed, there is a risk that the
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IP address of the iSeries system will have changed and a connection
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will either fail or will be made to the wrong iSeries system.</p>
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</div>
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</div>
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<div>
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<div class="familylinks">
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<div class="parentlink"><strong>Parent topic:</strong> <a href="rzaikcommapilist4.htm" title="Use the APIs to get and set other system object attributes, or determine if the attributes are restricted by policies.">Communications and security: Get and set attribute APIs</a></div>
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