<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML//EN">
<html>
<head>
<meta http-equiv="Content-Type"
content="text/html; charset=iso-8859-1">
<meta name="Author" content>
<meta name="GENERATOR" content="Microsoft FrontPage 2.0">
<title>dp_copy</title>
</head>
<body bgcolor="#C0C0C0" text="#000000" link="#0000EE"
vlink="#551A8B" alink="#FF0000">
<h3>dp_copy</h3>
<p><b>Syntax</b> </p>
<p><tt>dp_copy ?-size </tt><em><tt>amount</tt></em><tt>? </tt><em><tt>srcChanId</tt></em><tt>
</tt><em><tt>destChanId</tt></em><tt> ?</tt><em><tt>destChanId2</tt></em><tt>
...?</tt></p>
<p><b>Comments</b></p>
<p>dp_copy allows bulk copying of information from one channel to
another. Notice that there can be more than one destination
channel (allowing for N-way copying). The size of the copy
can be specificied but it defaults to 4096 bytes. If the <em>amount</em>
requested is larger than the amount available in the source
channel, dp_copy may return less than the amount requested or
block, depending on the configuration of the source channel.</p>
<p>Note that dp_copy goes through the Tcl I/O layer, unlike <a
href="dp_send.html">dp_send</a> and <a href="dp_recv.html">dp_recv</a>.</p>
<dl>
<dt>dp_copy returns the number of bytes read from the source
channel.</dt>
<dt> </dt>
<dt><b>Examples</b></dt>
<dt> </dt>
<dt><tt>dp_copy -size 100 $src $dest</tt></dt>
<dt><tt>dp_copy $src $dest</tt></dt>
<dt> </dt>
</dl>
</body>
</html>