//\r
// Multicast option, if it is a request, the value must be a zero string,\r
// otherwise, it must be like "addr,port,mc" string, mc indicates master.\r
//\r
if (!IsRequest) {\r
//\r
// Multicast option, if it is a request, the value must be a zero string,\r
// otherwise, it must be like "addr,port,mc" string, mc indicates master.\r
//\r
if (!IsRequest) {\r