mainline: improved logging format
mainline: improved logging format

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