Re: Problems with FTP maxpkts

[Polly Huang <huang@catarina.usc.edu>]

On Wed, 24 Feb 1999, Cristiano Santoni wrote:

> I mean there is an unending stream of packets until the FTP source is
> stopped by :
> 	$ns at 5.0 "$ftp0 stop"
> Here is a piece of the source code:
>         set tcp0 [new Agent/TCP]
> 	$tcp0 set segsize_ 1000
> 	set tcp1 [new Agent/TCPSink]
> 	$ns attach-agent $n(0) $tcp0
> 	$ns attach-agent $n(1) $tcp1
> 	$ns connect $tcp0 $tcp1
> 	.............................
>         #FTP source
>         set ftp0 [new Application/FTP]
> 	set ftp0 maxpkts 1

looks like an otcl syntax error. Though extremely odd, I'd expect this
program to be interupted at 'set ftp0 maxpkts 1' or '$ftp0 attach-agent
$tcp0'.

You might want to try this instead:
$ftp0 set maxpkts_ 1

Cheers,
-Polly

>         $ftp0 attach-agent $tcp0
>         $ns at 0.0 "$ftp0 start"
>         $ns at 5.0 "$ftp0 stop"


> 
> I expected only one packet to be set by $ftp0, but the source
> transmits continuously from 0.0 to 5.0.
> Where is the error?
> Thanks in advance,
> Cristiano
> 
> Last message was:
> >
> > On Tue, 23 Feb 1999 04:01:25 PST, Cristiano Santoni wrote: 
> > >Can anyone helpme solving the following problem with FTP sources?
> > >The Tcl code:
> > >
> > >$ftp0 set maxpkts 10
> > >
> > >or the equivalent:
> > >
> > >$ftp0 produce 10
> > >
> > >seems to have no effect.Why?
> > >Any advice?
> > 
> > Can you be more specific about the problem you encountered?
> > (No effect could mean not sending any packets, or sending an unending
> > stream of packets.)
> > 
> > Putting the script up at some URL would also be helpful.
> > 
> >    -John Heidemann
> > 
> 
> 
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