Network stress testing tools

[Jean-Yves Migeon <jeanyves.migeon%free.fr@localhost>]

Hi list!

I am looking for a library or set of tools I can integrate in a project 
to "simulate" a typical network behavior: latency(ies), packet lossage, 
out of order sequence, etc.

It would be cool that this kind of tools is purely userland based; 
ultimately I would like to use it for regression testing a set of 
libraries I am currently developping, and prefer to have it packaged 
easily so other people using my libraries could "make test" it too. I 
would expect it to hook socket/read/write/... syscalls.

Unfortunately all my research has so far failed. Most solutions I have 
found require either a dedicated machine to run and have admin rights 
(uhhh) like Lunix traffic control (tc), or heavyweight stuff like we 
have with rump and atf/kyua.

So, dear fellow develociraptors, what are you using to test your new 
network code, be it kernel based or not?

Thanks!

--
Jean-Yves Migeon