p2psim: Roll Your Own P2P Protocol

Anonymous Coward writes "p2psim is a free, multi-threaded, discrete event simulator developed at MIT to evaluate and investigate p2p protocols. You can quite easily add your own p2p protocol and compare it with others to make sure it runs well before you write the real thing. p2psim runs in Linux and FreeBSD."

Comments

Real world problems?

[Chris_Jefferson]

I've seen this program a short while ago, so feel I can comment :)

While it is a good idea, and can be worked on it does have some small problems, mainly that it isn't quite "dirty" enough. It tends to believe people will behave better than you'd expect them to, not be evil leechers and also not have very dodgy net connections which go up and down every 10 minutes (which to be fair happens to alot of people on ADSL and such like, their uploads get saturated and all their download connections drop because their ACKs aren't getting out)

Having said that, this is a good program, and I hope will be improved as one of the hardest parts about p2p networks is keeping up a good solid network without it taking up a significant proportion of the network, and nowadays few people want to risk running a server if they can avoid it...