为了方便发现服务器,主要原因是我懒得写 IP 地址,我是这么做的,用 UDP 每隔几秒广播一次,客户端开一个线程在指定端口接收,收到消息就说明发送 UDP
地址为服务器 IP,然后显示在界面上,选择,连接,就看到服务器桌面了。
class CBoardcast { public: CBoardcast() { m_hSocket = ::WSASocket(AF_INET, SOCK_DGRAM, IPPROTO_UDP, NULL, 0, 0); bool bBroadcast = true; setsockopt(m_hSocket, SOL_SOCKET, SO_BROADCAST, (char *) &bBroadcast, sizeof(bBroadcast)); SOCKADDR_IN addrUDP = { 0 }; addrUDP.sin_family = AF_INET; addrUDP.sin_port = htons(0); addrUDP.sin_addr.s_addr = htonl(INADDR_ANY); bind(m_hSocket, (SOCKADDR *) &addrUDP, sizeof(addrUDP)); } ~CBoardcast() { closesocket(m_hSocket); m_hSocket = INVALID_SOCKET; } ////////////////////////////////////////////////////////////////////////// INT Boardcast(USHORT nPort, PCHAR pBuffer, DWORD dwLength) { SOCKADDR_IN addrUDP = { 0 }; addrUDP.sin_family = AF_INET; addrUDP.sin_port = htons(nPort); addrUDP.sin_addr.s_addr = htonl(INADDR_BROADCAST); return sendto(m_hSocket, pBuffer, dwLength, 0, (SOCKADDR *) &addrUDP, sizeof(SOCKADDR_IN)); } private: SOCKET m_hSocket; };
怎么样,简单吧?