Suggest and develop additional TCP testing tools

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imported from: http://argus-bg.dnsalias.org/issues/580

The comming VMA will include full blown TCP stack. This is much more 
complecated than handling UDP that we currently have in VMA. Hence, we need 
more than latency and throughput tests that vperf knows to do.

for example we would like to test behavior of TCP stack in case peer doesn't 
read from its side of the socket, and other tests that relates to recv window, 
acks congestion controll, and so on.
NOTE:

   1. These tests can be written in python, and not nessarily in C++
   2. We have heard about ixia (http://www.ixiacom.com/) that does similair things. Here we are talking about simpler level of tests. I am writing ixia, only for providing background for what we are talking about.
   3. This task should come after supporting TCP in vperf

Original issue reported on code.google.com by [email protected] on 4 Apr 2011 at 7:29