C++服务器端开发步骤（5）:处理客户端请求

#include 
#include 
#include 
#include 

int main() {
    int serverSocket, clientSocket;
    struct sockaddr_in serverAddress, clientAddress;
    socklen_t clientAddressLen = sizeof(clientAddress);
    char buffer[1024];

    // 创建服务器Socket
    if ((serverSocket = socket(AF_INET, SOCK_STREAM, 0)) == -1) {
        std::cerr << "Failed to create socket." << std::endl;
        return -1;
    }

    // 设置服务器地址和端口
    serverAddress.sin_family = AF_INET;
    serverAddress.sin_addr.s_addr = INADDR_ANY;
    serverAddress.sin_port = htons(8080);

    // 绑定服务器地址和端口
    if (bind(serverSocket, (struct sockaddr*)&serverAddress, sizeof(serverAddress)) == -1) {
        std::cerr << "Failed to bind socket." << std::endl;
        return -1;
    }

    // 监听连接请求
    if (listen(serverSocket, 5) == -1) {
        std::cerr << "Failed to listen on socket." << std::endl;
        return -1;
    }

    std::cout << "Server started. Listening on port 8080..." << std::endl;

    // 接受客户端连接
    if ((clientSocket = accept(serverSocket, (struct sockaddr*)&clientAddress, &clientAddressLen)) == -1) {
        std::cerr << "Failed to accept client connection." << std::endl;
        return -1;
    }

    std::cout << "Client connected. Handling request..." << std::endl;

    // 接收客户端请求
    memset(buffer, 0, sizeof(buffer));
    if (recv(clientSocket, buffer, sizeof(buffer), 0) == -1) {
        std::cerr << "Failed to receive request from client." << std::endl;
        return -1;
    }

    std::cout << "Received request: " << buffer << std::endl;

    // 处理客户端请求
    std::string response = "Hello, client!";
    if (send(clientSocket, response.c_str(), response.length(), 0) == -1) {
        std::cerr << "Failed to send response to client." << std::endl;
        return -1;
    }

    std::cout << "Response sent: " << response << std::endl;

    // 关闭连接
    close(clientSocket);
    close(serverSocket);

    return 0;
}

       监听端口8080，当客户端连接之后，服务器接收到客户端的请求，然后给客户端发送一个简单的响应。