mainline: improved unit test case
mainline: improved unit test case

jmptrader/SuperSocket,mdavid/SuperSocket,chucklu/SuperSocket,chucklu/SuperSocket,kerryjiang/SuperSocket,jmptrader/SuperSocket,kerryjiang/SuperSocket,mdavid/SuperSocket,memleaks/SuperSocket,ZixiangBoy/SuperSocket,jmptrader/SuperSocket,fryderykhuang/SuperSocket,fryderykhuang/SuperSocket,chucklu/SuperSocket,ZixiangBoy/SuperSocket,fryderykhuang/SuperSocket,mdavid/SuperSocket,ZixiangBoy/SuperSocket