hi all, i need to simulate several kinds of applications, such as skype, games, emule, video, audio etc. my question is how can i simulate these kinds of applications by the traffic trace file? should i sniffer the packet deliver time and packet size and record them in my own traffic trace file? but we know that the traffic pattern generated in this way will be affected by the transport-layer protocol, is there any better to achieve my goals? thanks in advanceļ¼