#ifndef _WS2IPDEF_H #define _WS2IPDEF_H #if __GNUC__ >=3 #pragma GCC system_header #endif #include struct ip_mreq { struct in_addr imr_multiaddr; struct in_addr imr_interface; }; struct ip_mreq_source { struct in_addr imr_multiaddr; struct in_addr imr_sourceaddr; struct in_addr imr_interface; }; #endif