用lC语言编写一个socket代码

以下是一个简单的使用C语言编写的Socket代码，演示了如何创建一个TCP服务器和客户端：

服务器端代码：

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <unistd.h>

int main() {
    int server_socket, client_socket;
    struct sockaddr_in server_address, client_address;
    char server_message[256] = "Hello, client!";

    // 创建服务器端套接字
    server_socket = socket(AF_INET, SOCK_STREAM, 0);

    // 指定服务器地址和端口号
    server_address.sin_family = AF_INET;
    server_address.sin_port = htons(8080);
    server_address.sin_addr.s_addr = INADDR_ANY;

    // 绑定服务器套接字到指定地址和端口号
    bind(server_socket, (struct sockaddr*) &server_address, sizeof(server_address));

    // 监听客户端请求
    listen(server_socket, 5);

    printf("Server waiting for client connection...\n");

    // 接收客户端请求
    client_socket = accept(server_socket, NULL, NULL);

    // 发送消息给客户端
    send(client_socket, server_message, sizeof(server_message), 0);

    // 关闭套接字
    close(server_socket);
    close(client_socket);

    return 0;
}

客户端代码：

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <unistd.h>

int main() {
    int client_socket;
    struct sockaddr_in server_address;
    char server_response[256];

    // 创建客户端套接字
    client_socket = socket(AF_INET, SOCK_STREAM, 0);

    // 指定服务器地址和端口号
    server_address.sin_family = AF_INET;
    server_address.sin_port = htons(8080);
    server_address.sin_addr.s_addr = INADDR_ANY;

    // 连接服务器
    connect(client_socket, (struct sockaddr*) &server_address, sizeof(server_address));

    // 接收服务器消息
    recv(client_socket, server_response, sizeof(server_response), 0);

    printf("Server message: %s\n", server_response);

    // 关闭套接字
    close(client_socket);

    return 0;
}