linux建立服务端能一直接收客户端连接接受信息 c语言代码

可以使用socket编程实现，以下是一个简单的示例代码：

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

#define PORT 8888
#define MAX_CLIENTS 10

int main() {
    int server_fd, new_socket, valread;
    struct sockaddr_in address;
    int opt = 1;
    int addrlen = sizeof(address);
    char buffer[1024] = {0};
    char *hello = "Hello from server";

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

    // 设置socket选项
    if (setsockopt(server_fd, SOL_SOCKET, SO_REUSEADDR | SO_REUSEPORT, &opt, sizeof(opt))) {
        perror("setsockopt failed");
        exit(EXIT_FAILURE);
    }

    // 绑定地址和端口
    address.sin_family = AF_INET;
    address.sin_addr.s_addr = INADDR_ANY;
    address.sin_port = htons(PORT);

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

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

    printf("Server listening on port %d\n", PORT);

    // 接受连接并处理请求
    while (1) {
        if ((new_socket = accept(server_fd, (struct sockaddr *)&address, (socklen_t*)&addrlen)) < 0) {
            perror("accept failed");
            exit(EXIT_FAILURE);
        }

        printf("New client connected: %s:%d\n", inet_ntoa(address.sin_addr), ntohs(address.sin_port));

        // 接收客户端发送的数据
        valread = read(new_socket, buffer, 1024);
        printf("Received message from client: %s\n", buffer);

        // 发送响应给客户端
        send(new_socket, hello, strlen(hello), 0);
        printf("Hello message sent to client\n");

        // 关闭连接
        close(new_socket);
    }

    return 0;
}

这个代码可以建立一个简单的TCP服务端，可以接收客户端的连接并接收数据，然后发送响应给客户端。你可以根据自己的需求修改代码。