使用C语言创建一个TCP socket服务，等待连接后进行交互

好的，以下是使用C语言创建一个TCP socket服务，等待连接后进行交互的基本步骤：

1. 包含头文件

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

2. 创建socket

int server_socket = socket(AF_INET, SOCK_STREAM, 0);
if (server_socket == -1) {
    printf("创建socket失败\n");
    exit(1);
}

3. 绑定地址和端口号

struct sockaddr_in server_addr;
memset(&server_addr, 0, sizeof(server_addr));
server_addr.sin_family = AF_INET;
server_addr.sin_addr.s_addr = htonl(INADDR_ANY);
server_addr.sin_port = htons(8888); // 端口号

int bind_result = bind(server_socket, (struct sockaddr*)&server_addr, sizeof(server_addr));
if (bind_result == -1) {
    printf("绑定地址和端口号失败\n");
    exit(1);
}

4. 监听连接请求

int listen_result = listen(server_socket, 10); // 最多连接10个client
if (listen_result == -1) {
    printf("监听连接请求失败\n");
    exit(1);
}

5. 接受连接请求

struct sockaddr_in client_addr;
socklen_t client_addr_len = sizeof(client_addr);

int client_socket = accept(server_socket, (struct sockaddr*)&client_addr, &client_addr_len);
if (client_socket == -1) {
    printf("接受连接请求失败\n");
    exit(1);
}

char client_ip[16];
inet_ntop(AF_INET, &client_addr.sin_addr, client_ip, sizeof(client_ip));
printf("客户端 %s:%d 已连接\n", client_ip, ntohs(client_addr.sin_port));

6. 与客户端进行交互

char buffer[1024];
while (1) {
    memset(buffer, 0, sizeof(buffer));
    int recv_result = recv(client_socket, buffer, sizeof(buffer), 0);
    if (recv_result <= 0) {
        printf("客户端 %s:%d 已断开连接\n", client_ip, ntohs(client_addr.sin_port));
        break;
    }

    printf("客户端 %s:%d 发来消息：%s\n", client_ip, ntohs(client_addr.sin_port), buffer);

    char reply[] = "服务器已收到消息";
    int send_result = send(client_socket, reply, sizeof(reply), 0);
    if (send_result == -1) {
        printf("发送消息失败\n");
        exit(1);
    }
}

7. 关闭socket

close(client_socket);
close(server_socket);

以上就是使用C语言创建一个TCP socket服务，等待连接后进行交互的基本步骤。