test plan

[Kiddinglife]

do unit tests for all possible functions
force normal/sick connection cases to test connection states properly
force echo big packet with fragment to test assemble works properly
force echo uu, uo, ou,oo data chunks to test reordering works properly
force congestions to test retx ans sack function correctly
force very small rwnd to test sws work properly
force path unreachable and reachable again to test path failover work properly
force normal/sick disconnection cases to test connection states properly
force kinds of attacks