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<html><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN"><!--Converted with jLaTeX2HTML 2002 (1.62) JA patch-1.4patched version by: Kenshi Muto, Debian Project.LaTeX2HTML 2002 (1.62),original version by: Nikos Drakos, CBLU, University of Leeds* revised and updated by: Marcus Hennecke, Ross Moore, Herb Swan* with significant contributions from: Jens Lippmann, Marek Rouchal, Martin Wilck and others --><HTML><HEAD><TITLE>31.1.3.0.1 Creating the Agent</TITLE><META NAME="description" CONTENT="31.1.3.0.1 Creating the Agent"><META NAME="keywords" CONTENT="everything"><META NAME="resource-type" CONTENT="document"><META NAME="distribution" CONTENT="global"><META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso-8859-1"><META NAME="Generator" CONTENT="jLaTeX2HTML v2002 JA patch-1.4"><META HTTP-EQUIV="Content-Style-Type" CONTENT="text/css"><LINK REL="STYLESHEET" HREF="everything.css" tppabs="http://www.isi.edu/nsnam/ns/doc/everything.css"><LINK REL="next" HREF="node372.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node372.html"><LINK REL="previous" HREF="node370.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node370.html"><LINK REL="up" HREF="node370.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node370.html"><LINK REL="next" HREF="node372.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node372.html"></HEAD><BODY ><!--Navigation Panel--><A NAME="tex2html7110" HREF="node372.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node372.html"><IMG WIDTH="37" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="next" SRC="file:/usr/share/latex2html/icons/next.png"></A> <A NAME="tex2html7104" HREF="node370.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node370.html"><IMG WIDTH="26" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="up" SRC="file:/usr/share/latex2html/icons/up.png"></A> <A NAME="tex2html7098" HREF="node370.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node370.html"><IMG WIDTH="63" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="previous" SRC="file:/usr/share/latex2html/icons/prev.png"></A> <A NAME="tex2html7106" HREF="node1.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node1.html"><IMG WIDTH="65" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="contents" SRC="file:/usr/share/latex2html/icons/contents.png"></A> <A NAME="tex2html7108" HREF="node590.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node590.html"><IMG WIDTH="43" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="index" SRC="file:/usr/share/latex2html/icons/index.png"></A> <BR><B> Next:</B> <A NAME="tex2html7111" HREF="node372.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node372.html">31.1.3.0.2 TCP Data Source</A><B> Up:</B> <A NAME="tex2html7105" HREF="node370.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node370.html">31.1.3 Simple Configuration</A><B> Previous:</B> <A NAME="tex2html7099" HREF="node370.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node370.html">31.1.3 Simple Configuration</A>   <B> <A NAME="tex2html7107" HREF="node1.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node1.html">Contents</A></B>   <B> <A NAME="tex2html7109" HREF="node590.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node590.html">Index</A></B> <BR><BR><!--End of Navigation Panel--><H4><A NAME="SECTION06213010000000000000">31.1.3.0.1 Creating the Agent</A></H4><PRE>set ns [new Simulator] # preamble initialization;set node1 [$ns node] # agent to reside on this node;set node2 [$ns node] # agent to reside on this node;{\bfseries{}set tcp1 [$ns create-connection TCP $node1 TCPSink $node2 42]}$tcp set window_ 50 # configure the TCP agent;{\bfseries{}set ftp1 [new Application/FTP]}{\bfseries{}$ftp1 attach-agent $tcp1}$ns at 0.0 "$ftp start"</PRE>This example illustrates the use of the simulator built-infunction <TT>create-connection</TT>.The arguments to this function are: the source agent to create,the source node, the target agent to create, the target node, andthe flow ID to be used on the connection.The function operates by creating the two agents, setting theflow ID fields in the agents, attaching the source and target agentsto their respective nodes, and finally connecting the agents(i.e. setting appropriate source and destination addresses and ports).The return value of the function is the name of the source agent created.<P><BR><HR><ADDRESS>2003-09-23</ADDRESS></BODY></HTML>⌨️ 快捷键说明
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