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cout<<"Error in setsockopt(IP_MULTICAST_TTL): "< return 0; } const int loopback = 0; //禁止回馈 ret = setsockopt(server,IPPROTO_IP,IP_MULTICAST_LOOP,\ (char*)&loopback,sizeof(loopback)); if( ret == SOCKET_ERROR ) { WSACleanup(); cout<<"Error in setsockopt(IP_MULTICAST_LOOP): "< return 0; } sockaddr_in local; memset(&local, 0, sizeof(local)); local.sin_family = AF_INET; local.sin_port = htons(MULTICAST_PORT); local.sin_addr.S_un.S_addr = INADDR_ANY; ret = bind(server, (sockaddr*)(&local), sizeof(local)); if( ret == SOCKET_ERROR ) { WSACleanup(); cout<<"Error in bind: "< return 0; } ip_mreq mreq; memset(&mreq, 0, sizeof(mreq)); mreq.imr_interface.S_un.S_addr = INADDR_ANY; mreq.imr_multiaddr.S_un.S_addr = inet_addr(MULTICAST_IP); //加入一个多播组 ret = setsockopt(server,IPPROTO_IP,IP_ADD_MEMBERSHIP,\ (char*)&mreq,sizeof(mreq)); if( ret == SOCKET_ERROR ) { WSACleanup(); |
正在阅读：读书笔记:在局域网中实现多播功能读书笔记:在局域网中实现多播功能
2004-03-16 15:14
出处：CSDN
责任编辑：linjixiong
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