Re: [ns] http traffic over tcp

[Haobo Yu <haoboy@packetdesign.com>]

You should try to turn on full-tcp. However, since full-tcp is quite buggy
and has not been fixed yet, you may have better luck using the large scale
web traffic code (webtraf.{h,cc}), which is much simpler to change.

On Fri, 2 Mar 2001, Christian Schwab wrote:

> Hi everyone!
> 
> 
> I want to study the tcp behaviour with http traffic.
> 
> For modeling http connections I'm currently using the web cache application.
> 
> My aim is to collect tcp information like cwnd sizes, queue sizes or
> bandwith usage over a period of time.
> 
> With the OTcl method "start-session" the client requests some random pages
> (as defined by the pagepools).
> I can see web traffic between the client and the server (or cache) in nam
> and in my http trace as well.
> 
> But for my tcp statistics there's no information, e.g. cwnd size is always
> zero.
> 
> By using a TcpApp wrapper, I can manually send and receive data which is
> of course recognized by my statistics but I don't want to tell ns every
> single byte it has to transfer.
> 
> My question is:
> 
> When I use the "start-session" method, is it possible to pass the
> information to tcp automatically so that I can have access
> to my tcp statistics?
> Or is this the wrong approach for collecting tcp information with http
> traffic?
> 
> If I choose FTP as an application, everything just works fine.
> 
> 
> Thank you in advance,
> 
> Christian
> 
> 
>