处理时怎么知道是哪个socket？
void OnSignal(int nSig)
{
switch (nSig)
{
case SIGBUS:
break;
case SIGINT:
exitapp=1;
commlogStr(loglevel2,"[linux]Ctrl-C");
CRTfree();

printf(" 正在退出 MP ...\n");
commlogSrc(loglevel2);
exit(110);
break;
case SIGQUIT:
break;
case SIGSTOP:
break;
default :
break;
}
}