[cpp] ////////////////////////////////////////////////////////// // UDPServer.cpp文件 #include "../common/InitSock.h" #include <stdio.h> CInitSock initSock; // 初始化Winsock庫 int main() { // 創建套節字 SOCKET s = ::socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP); if(s == INVALID_SOCKET) { printf("Failed socket() \n"); return 0; } // 填充sockaddr_in結構 sockaddr_in sin; sin.sin_family = AF_INET; sin.sin_port = htons(4567); sin.sin_addr.S_un.S_addr = INADDR_ANY; // 綁定這個套節字到一個本地地址 if(::bind(s, (LPSOCKADDR)&sin, sizeof(sin)) == SOCKET_ERROR) { printf("Failed bind() \n"); return 0; } // 接收數據 char buff[1024]; sockaddr_in addr; int nLen = sizeof(addr); while(TRUE) { int nRecv = ::recvfrom(s, buff, 1024, 0, (sockaddr*)&addr, &nLen); if(nRecv > 0) { buff[nRecv] = '\0'; printf(" 接收到數據(%s):%s", ::inet_ntoa(addr.sin_addr), buff); } } ::closesocket(s); }