TCP.rar_VC TCP_VC TCP_tcp vc

// Server.cpp : Defines the entry point for the console application. // #include "stdafx.h" #define BUF_SZIE 64 #include "winsock2.h" #pragma comment(lib, "ws2_32.lib") int main(int argc, char* argv[]) { WSADATA wsd; //WSADATA变量 SOCKET sServer; //服务器套接字 SOCKET sClient; //客户端套接字 SOCKADDR_IN addrServ;; //服务器地址 char buf[BUF_SZIE]; //接收数据缓冲区 int retVal; //返回值 //初始化套结字动态库 if (WSAStartup(MAKEWORD(2,2), &wsd) != 0) { printf("WSAStartup failed!\n"); return 1; } //创建套接字 sServer = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP); if(INVALID_SOCKET == sServer) { printf("socket failed!\n"); WSACleanup();//释放套接字资源; return -1; } //服务器套接字地址 addrServ.sin_family = AF_INET; addrServ.sin_port = htons(4999); addrServ.sin_addr.s_addr = INADDR_ANY; //绑定套接字 retVal = bind(sServer, (LPSOCKADDR)&addrServ, sizeof(SOCKADDR_IN)); if(SOCKET_ERROR == retVal) { printf("bind failed!\n"); closesocket(sServer); //关闭套接字 WSACleanup(); //释放套接字资源; return -1; } //开始监听 retVal = listen(sServer, 1); if(SOCKET_ERROR == retVal) { printf("listen failed!\n"); closesocket(sServer); //关闭套接字 WSACleanup(); //释放套接字资源; return -1; } //接受客户端请求 sockaddr_in addrClient; int addrClientlen = sizeof(addrClient); sClient = accept(sServer,(sockaddr FAR*)&addrClient, &addrClientlen); if(INVALID_SOCKET == sClient) { printf("accept failed!\n"); closesocket(sServer); //关闭套接字 WSACleanup(); //释放套接字资源; return -1; } //接收客户端数据 ZeroMemory(buf, BUF_SZIE); retVal = recv(sClient, buf, BUF_SZIE, 0); if (SOCKET_ERROR == retVal) { printf("recv failed!\n"); closesocket(sServer); //关闭套接字 closesocket(sClient); //关闭套接字 WSACleanup(); //释放套接字资源; return -1; } printf("%s\n", buf); //输出"MyTCP" //退出 closesocket(sServer); //关闭套接字 closesocket(sClient); //关闭套接字 WSACleanup(); //释放套接字资源; return 0; }