求组播源码

Question

哪个大虾有组播源码，借小弟学习一用。
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Answer 1

//=====================接收方设置============================
struct ip_mreq mcast;

mcast.imr_multiaddr.s_addr = inet_addr(MYCASTAGROUP);
mcast.imr_interface.s_addr = htonl(INADDR_ANY);

setsockopt(gRecvSocket,IPPROTO_IP,IP_ADD_MEMBERSHIP,(char*)&mcast,sizeof(mcast));

int optval = 0; //禁用回环
setsockopt(gRecvSocket,IPPROTO_IP,IP_MULTICAST_LOOP,(char*)&optval,sizeof(optval));//====================发送方设置============================= m_ClientAddr.sin_family=AF_INET; //填充发送方地址及端口
m_ClientAddr.sin_addr.s_addr=inet_addr(MYCASTAGROUP); //指定多播组
m_ClientAddr.sin_port=htons(RECV_PORT);