mainline: exposed client socket in ISocketSession
mainline: exposed client socket in ISocketSession

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