c++通信网络课程设计

以下是一个基于WinSock的C++ socket通信客户端和服务器端的简单示例，可以作为课程设计的参考：

服务器端代码：

#include <iostream>
#include <winsock2.h>
#pragma comment(lib, "ws2_32.lib") // 链接ws2_32.lib库文件

using namespace std;

int main() {
    // 初始化WinSock
    WSADATA wsaData;
    WSAStartup(MAKEWORD(2, 2), &wsaData);

    // 创建socket
    SOCKET serverSocket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);

    // 绑定IP和端口
    sockaddr_in serverAddr;
    serverAddr.sin_family = AF_INET;
    serverAddr.sin_addr.s_addr = htonl(INADDR_ANY);
    serverAddr.sin_port = htons(12345);
    bind(serverSocket, (SOCKADDR*)&serverAddr, sizeof(serverAddr));

    // 监听端口
    listen(serverSocket, 10);

    // 接受客户端连接
    SOCKET clientSocket;
    sockaddr_in clientAddr;
    int clientAddrLen = sizeof(clientAddr);
    clientSocket = accept(serverSocket, (SOCKADDR*)&clientAddr, &clientAddrLen);

    // 接收客户端消息
    char recvBuf[1024];
    int recvLen = recv(clientSocket, recvBuf, sizeof(recvBuf), 0);
    cout << "Received message: " << recvBuf << endl;

    // 发送消息给客户端
    char sendBuf[] = "Hello, client!";
    send(clientSocket, sendBuf, sizeof(sendBuf), 0);

    // 关闭socket
    closesocket(clientSocket);
    closesocket(serverSocket);

    // 清理WinSock
    WSACleanup();

    return 0;
}

客户端代码：

#include <iostream>
#include <winsock2.h>
#pragma comment(lib, "ws2_32.lib") // 链接ws2_32.lib库文件

using namespace std;

int main() {
    // 初始化WinSock
    WSADATA wsaData;
    WSAStartup(MAKEWORD(2, 2), &wsaData);

    // 创建socket
    SOCKET clientSocket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);

    // 连接服务器
    sockaddr_in serverAddr;
    serverAddr.sin_family = AF_INET;
    serverAddr.sin_addr.s_addr = inet_addr("127.0.0.1");
    serverAddr.sin_port = htons(12345);
    connect(clientSocket, (SOCKADDR*)&serverAddr, sizeof(serverAddr));

    // 发送消息给服务器
    char sendBuf[] = "Hello, server!";
    send(clientSocket, sendBuf, sizeof(sendBuf), 0);

    // 接收服务器消息
    char recvBuf[1024];
    int recvLen = recv(clientSocket, recvBuf, sizeof(recvBuf), 0);
    cout << "Received message: " << recvBuf << endl;

    // 关闭socket
    closesocket(clientSocket);

    // 清理WinSock
    WSACleanup();

    return 0;
}