TCP结构体双向收发通信

// Server.cpp : Defines the entry point for the console application. // Author:Mandy 20161027 #include "winsock2.h" #pragma comment(lib, "ws2_32.lib") #include <iostream> using namespace std; int main(int argc, char* argv[]) { const int BUF_SIZE = 64; 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 struct Buf //接收数据缓冲区 { int apple; int orange; int banana; char blueberry[5]; int kiwifruit; }; Buf Buf1; struct sendBuf //返回给客户端数据 { int cmd; int sendID; int recvID; char name[5]; int number; }; sendBuf sendBuf1; int retVal; //返回值 //初始化套结字动态库 if (WSAStartup(MAKEWORD(2,2), &wsd) != 0) { cout << "WSAStartup failed!" << endl; return -1; } //创建套接字 sServer = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP); if(INVALID_SOCKET == sServer) { cout << "socket failed!" << endl; 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) { cout << "bind failed!" << endl; 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) { cout << "listen failed!" << endl; 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) { cout << "accept failed!" << endl; closesocket(sServer); //关闭套接字 WSACleanup(); //释放套接字资源; return -1; } while(true){ //接收客户端数据 char buf[BUF_SIZE]; memset(buf,0,BUF_SIZE); retVal = recv(sClient,buf,sizeof(buf),0); memset(&Buf1,0,sizeof(Buf)); memcpy(&Buf1,buf,sizeof(Buf)); if (SOCKET_ERROR == retVal) { cout << "recv failed!" << endl; closesocket(sServer); //关闭套接字 closesocket(sClient); //关闭套接字 WSACleanup(); //释放套接字资源; return -1; } //接收客户端数据 cout << "从客户端接收的数据:" <<Buf1.apple << Buf1.orange<<Buf1.banana<<Buf1.blueberry << Buf1.kiwifruit <<endl; cout << "向客户端发送数据:" ; cin >> sendBuf1.cmd >> sendBuf1.sendID >> sendBuf1.recvID >>sendBuf1.name >>sendBuf1.number ; int len_send = send(sClient,(char *)&sendBuf1,sizeof(sendBuf),0); } //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; }