C++等待socket回复

在C++中，你可以使用套接字编程来等待套接字的回复。以下是一个简单的示例代码，演示如何等待套接字的回复：

#include <iostream>
#include <sys/socket.h>
#include <arpa/inet.h>
#include <unistd.h>

int main() {
    // 创建套接字
    int serverSocket = socket(AF_INET, SOCK_STREAM, 0);
    if (serverSocket == -1) {
        std::cerr << "无法创建套接字" << std::endl;
        return 1;
    }

    // 定义服务器地址
    sockaddr_in serverAddress;
    serverAddress.sin_family = AF_INET;
    serverAddress.sin_port = htons(8080); // 替换为你的服务器端口号
    serverAddress.sin_addr.s_addr = INADDR_ANY;

    // 绑定套接字到服务器地址
    if (bind(serverSocket, (struct sockaddr *)&serverAddress, sizeof(serverAddress)) == -1) {
        std::cerr << "绑定套接字失败" << std::endl;
        close(serverSocket);
        return 1;
    }

    // 监听套接字
    if (listen(serverSocket, 5) == -1) {
        std::cerr << "监听套接字失败" << std::endl;
        close(serverSocket);
        return 1;
    }

    std::cout << "等待客户端连接..." << std::endl;

    // 接受客户端连接
    int clientSocket = accept(serverSocket, NULL, NULL);
    if (clientSocket == -1) {
        std::cerr << "无法接受客户端连接" << std::endl;
        close(serverSocket);
        return 1;
    }

    std::cout << "客户端已连接" << std::endl;

    // 接收客户端消息
    char buffer[1024];
    int bytesRead = recv(clientSocket, buffer, sizeof(buffer), 0);
    if (bytesRead == -1) {
        std::cerr << "接收消息失败" << std::endl;
        close(clientSocket);
        close(serverSocket);
        return 1;
    }

    std::cout << "收到消息: " << buffer << std::endl;

    // 发送回复给客户端