SOCKET 网络编程 计算机网络 作业 客户端 服务器端 client svever

// ******************************************************************* // server.cpp : Defines the entry point for the console application. // ******************************************************************* //#include "stdafx.h" #include <winsock2.h> #include <iostream> #define PORT_SERVER 6656 #define NUM_CLIENTS 10 int main(int argc, char* argv[]) { std::cout << "Start up tcp server." << std::endl; WSADATA wsaData; WORD sockVersion = MAKEWORD(2, 0); if (0 != WSAStartup(sockVersion, &wsaData)) { std::cout << "Failed to retrive socket version." << std::endl; return 0; } SOCKET sock_sev; sock_sev = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP); if (INVALID_SOCKET == sock_sev) { std::cout << "Invalid socket." << std::endl; WSACleanup(); return 0; } sockaddr_in addr_sev; addr_sev.sin_family = AF_INET; addr_sev.sin_port = htons(PORT_SERVER); addr_sev.sin_addr.s_addr = INADDR_ANY; if (SOCKET_ERROR == bind(sock_sev, (sockaddr *)&addr_sev, sizeof(addr_sev))) { std::cout << "Failed to bind." << std::endl; WSACleanup(); return 0; } if (SOCKET_ERROR == listen(sock_sev, NUM_CLIENTS)) { std::cout << "Failed to listen." << std::endl; WSACleanup(); return 0; } // 多路复用,暂时还未实现.后期会对此给出示例. //fd_set reads; //fd_set writes; //fd_set accepts; //FD_ZERO(&reads); //FD_ZERO(&writes); //FD_ZERO(&accepts); //SOCKET sock_client; sockaddr_in addr_client; int nAddrLen = sizeof(addr_client); while (true) { char tmp[512]; sock_client = accept(sock_sev, (sockaddr *)&addr_client, &nAddrLen); if (INVALID_SOCKET == sock_client) { std::cout << "Failed to accept." << std::endl; continue; } sprintf(tmp, "Your IP is %s\n", inet_ntoa(addr_client.sin_addr)); send(sock_client, tmp, strlen(tmp), 0); std::cout << "Connection from " << inet_ntoa(addr_client.sin_addr) << std::endl; closesocket(sock_client); } return 0; } //注:本程序使用的是VC6 IDE,编译时请在link中加入对ws2_32.lib库的引用.