写一个简单的C++webserver，打印接收的内容

以下是一个简单的C webserver，它可以接收HTTP请求，并打印出请求内容：

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

#define PORT 8080

int main(void) {
    int server_fd, new_socket;
    struct sockaddr_in address;
    int opt = 1;
    int addrlen = sizeof(address);
    char buffer[1024] = {0};

    // 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);
    }

    address.sin_family = AF_INET;
    address.sin_addr.s_addr = INADDR_ANY;
    address.sin_port = htons(PORT);

    // 绑定socket到指定端口
    if (bind(server_fd, (struct sockaddr *)&address, sizeof(address)) < 0) {
        perror("bind failed");
        exit(EXIT_FAILURE);
    }

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

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

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

        // 读取请求内容
        read(new_socket, buffer, 1024);
        printf("Received request:\n%s\n", buffer);

        // 返回响应
        char *response = "HTTP/1.1 200 OK\nContent-Type: text/plain\nContent-Length: 12\n\nHello World!";
        send(new_socket, response, strlen(response), 0);

        close(new_socket);
    }

    return 0;
}

这个webserver会在端口8080上监听HTTP请求。当有新请求到达时，它会读取请求内容并打印出来，然后返回一个简单的"Hello World!"响应。注意，这个webserver只是一个最基本的实现，它并没有考虑请求的方法、路径、参数等信息，也没有处理并发请求和错误情况。