tcpapp.tcl
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- #
- # Copyright (C) 2001 by USC/ISI
- # All rights reserved.
- #
- # Redistribution and use in source and binary forms are permitted
- # provided that the above copyright notice and this paragraph are
- # duplicated in all such forms and that any documentation, advertising
- # materials, and other materials related to such distribution and use
- # acknowledge that the software was developed by the University of
- # Southern California, Information Sciences Institute. The name of the
- # University may not be used to endorse or promote products derived from
- # this software without specific prior written permission.
- #
- # THIS SOFTWARE IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR IMPLIED
- # WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
- # MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
- #
- # @(#) $Header: /cvsroot/nsnam/ns-2/tcl/ex/tcpapp.tcl,v 1.1 2001/11/08 19:43:43 buchheim Exp $ (USC/ISI)
- # This is a simple demonstration of how to use the TcpApp application
- # to send data over a TCP connection.
- set namfile out.nam
- set tracefile out.tr
- set ns [new Simulator]
- # open trace files and enable tracing
- set nf [open $namfile w]
- $ns namtrace-all $nf
- set f [open $tracefile w]
- $ns trace-all $f
- # create two nodes
- set n0 [$ns node]
- set n1 [$ns node]
- $ns duplex-link $n0 $n1 2Mb 5ms DropTail
- $ns duplex-link-op $n0 $n1 orient right
- # create FullTcp agents for the nodes
- # TcpApp needs a two-way implementation of TCP
- set tcp0 [new Agent/TCP/FullTcp]
- set tcp1 [new Agent/TCP/FullTcp]
- $ns attach-agent $n0 $tcp0
- $ns attach-agent $n1 $tcp1
- $ns connect $tcp0 $tcp1
- $tcp1 listen
- # set up TcpApp
- set app0 [new Application/TcpApp $tcp0]
- set app1 [new Application/TcpApp $tcp1]
- $app0 connect $app1
- # install a procedure to print out the received data
- Application/TcpApp instproc recv {data} {
- global ns
- $ns trace-annotate "$self received data "$data""
- }
- proc finish {} {
- global ns nf f namfile
- $ns flush-trace
- close $nf
- close $f
- puts "running nam..."
- exec nam $namfile &
- exit 0
- }
- # send a message via TcpApp
- # The string will be interpreted by the receiver as Tcl code.
- $ns at 0.5 "$app0 send 100 {$app1 recv {my mesage}}"
- $ns at 1.0 "finish"
- $ns run