linux多线程 socket

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

void *handle_client(void *arg);

int main() {
    int server_fd, new_socket;
    struct sockaddr_in address;
    int addrlen = sizeof(address);
    pthread_t thread_id;

    // 创建socket
    if ((server_fd = socket(AF_INET, SOCK_STREAM, 0)) == 0) {
        perror("socket failed");
        exit(EXIT_FAILURE);
    }

    // 绑定socket
    address.sin_family = AF_INET;
    address.sin_addr.s_addr = INADDR_ANY;
    address.sin_port = htons(8080);

    if (bind(server_fd, (struct sockaddr *)&address, sizeof(address)) < 0) {
        perror("bind failed");
        exit(EXIT_FAILURE);
    }

    // 监听连接
    if (listen(server_fd, 3) < 0) {
        perror("listen");
        exit(EXIT_FAILURE);
    }

    while (1) {
        // 接受新连接
        if ((new_socket = accept(server_fd, (struct sockaddr *)&address, (socklen_t*)&addrlen)) < 0) {
            perror("accept");
            exit(EXIT_FAILURE);
        }

        // 创建新线程处理客户端请求
        if (pthread_create(&thread_id, NULL, handle_client, (void*)&new_socket) < 0) {
            perror("could not create thread");
            return 1;
        }

        pthread_detach(thread_id); // 分离线程，使其在结束时自动释放资源
    }

    return 0;
}

void *handle_client(void *socket_desc) {
    int sock = *(int*)socket_desc;
    char buffer[1024] = {0};
    int valread;

    while ((valread = read(sock, buffer, 1024)) > 0) {
        send(sock, buffer, valread, 0); // 简单回显客户端发送的数据
        memset(buffer, 0, sizeof(buffer));
    }

    close(sock);
    return 0;
}