Re: simple code-no outpuit-help!

[Manpreet <u9719017@iitkgp.ren.nic.in>]

Hi Sid
In the code given by you, There's no mention of opening a trace file(any 
name) where ns can record the tracings. So try adding these lines:

set f [open trace.tr w]
$ns trace-all $f

And modify procedure finish{} as :

proc finish {} {
        global ns nf f
        $ns flush-trace
        close $nf
	close $f
        exec nam out.nam &
        exit 0
 }


This will create the desired trace file (trace.tr) for you.

Hope this helps

Manpreet.


On Mon, 23 Nov 1998, Sid Takkella wrote:

> Hi :
> 
> I have created a simple 2 node network and tcp agents to un an ftp applications. but there is no trace produced. can some one tell me what i am doing wrong.
> 
> thanks 
> Sid
> ----------------------code-----------------------
> set ns [new Simulator]
> 
> set nf [open out.nam w]
> 
> proc finish {} {
> 	global ns nf
> 	$ns flush-trace
> 	close $nf
>         exec nam out.nam &
> 	exit 0
> }
> 
> set node0 [$ns node]
> set node1 [$ns node]
> 
> $ns duplex-link $node0 $node1 1Mb 10ms DropTail
> 
> set src [new Agent/TCP/FullTcp]
> set sink [new Agent/TCP/FullTcp]
> $ns attach-agent $node0 $src
> $ns attach-agent $node1 $sink
> $ns connect $src $sink
> 
> $sink listen;
> $src set window_ 100
> 
> set ftp1 [new Application/FTP]
> $ftp1 attach-agent $src
> 
> Application/FTP instproc start {} {
> 	[$self agent] send -1;
> }
> 
> $ns namtrace-all $nf 
> $ns at 0.0 "ftp start"
> $ns at 10.0 "finish"
>