54 lines
1.6 KiB
HTML
54 lines
1.6 KiB
HTML
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<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML//EN">
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<html>
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<head>
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<meta http-equiv="Content-Type"
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content="text/html; charset=iso-8859-1">
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<meta name="Author" content>
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<meta name="GENERATOR" content="Microsoft FrontPage 2.0">
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<title>dp_RDO</title>
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</head>
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<body bgcolor="#C0C0C0" text="#000000" link="#0000EE"
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vlink="#551A8B" alink="#FF0000">
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<h3>dp_RDO</h3>
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<p><b>Syntax</b></p>
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<p><tt>dp_RDO rdoChan ?-events </tt><em><tt>evtList</tt></em><tt>?
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?-onerror </tt><em><tt>errScript</tt></em><tt>? ?-callback </tt><em><tt>callScript</tt></em><tt>?
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rdoCmd ?args ...?</tt></p>
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<p><b>Comments</b></p>
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<p>RDO is akin to an RPC except there is no return
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value. Since there is no return value, dp_RDO does not wait
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for a response and therefore there is no need for the timeout
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code that dp_RPC requires.</p>
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<p>RDOs can be hard to debug because they generate no response at
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all, even if something catastrophic happens. Therefore, one can
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track errors by using <em>errScript</em>; the RDO sender's
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errorInfo will be set to the RDO executer's errorInfo and <em>errScript</em>
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will be called with the error message generated by the RDO as an
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argument.</p>
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<p>In the same vein, <em>callScript</em> will be evaluted when
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the RDO has finished evaluting on the remote machine.</p>
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<p>If both -onerror and -callback are specified, <em>callScript</em>
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will be called unless the RDO generated an error.</p>
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<p><b>Examples</b></p>
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<dl>
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<dt><tt>dp_RDO $myChan -events all puts stdout foobar</tt></dt>
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<dt><tt>dp_RDO $myChan -onerror WhatError wackyProc</tt></dt>
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<dt> </dt>
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</dl>
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</body>
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</html>
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