epoll并发服务器

#include
#include
#include
#include
#include
#include
#include

#define MAX_EVENTS 10
#define BUFFER_SIZE 1024
#define IP "192.168.250.100"
int main() {
    int server_fd, client_fd, epoll_fd, event_count, i;
    struct sockaddr_in server_addr, client_addr;
    socklen_t client_addr_len;
    struct epoll_event event, events[MAX_EVENTS];
    char buffer[BUFFER_SIZE];

    // 创建监听套接字
    server_fd = socket(AF_INET, SOCK_STREAM, 0);
    if (server_fd == -1) {
        perror("socket");
        exit(EXIT_FAILURE);
    }
    int reuser = 1;
    if(setsockopt(server_fd,SOL_SOCKET,SO_REUSEADDR,&reuser,sizeof(reuser))<0){
        perror("setsockopt");
        exit(EXIT_FAILURE);
    }
    // 设置服务器地址
    server_addr.sin_family = AF_INET;
    server_addr.sin_addr.s_addr = inet_addr(IP);
    server_addr.sin_port = htons(8080);

    // 绑定套接字到服务器地址
    if (bind(server_fd, (struct sockaddr*)&server_addr, sizeof(server_addr)) == -1) {
        perror("bind");
        exit(EXIT_FAILURE);
    }

    // 监听连接
    if (listen(server_fd, 5) == -1) {
        perror("listen");
        exit(EXIT_FAILURE);
    }

    // 创建epoll实例
    epoll_fd = epoll_create1(0);
    if (epoll_fd == -1) {
        perror("epoll_create1");
        exit(EXIT_FAILURE);
    }

    // 添加监听套接字到0
    event.events = EPOLLIN;
    event.data.fd = 0;
    if (epoll_ctl(epoll_fd, EPOLL_CTL_ADD, 0, &event) == -1) {
        perror("epoll_ctl");
        exit(EXIT_FAILURE);
    }
    // 添加监听套接字到epoll
    event.events = EPOLLIN;
    event.data.fd = server_fd;
    if (epoll_ctl(epoll_fd, EPOLL_CTL_ADD, server_fd, &event) == -1) {
        perror("epoll_ctl");
        exit(EXIT_FAILURE);
    }

    while (1) {
        // 等待事件发生
        event_count = epoll_wait(epoll_fd, events, MAX_EVENTS, -1);
        if (event_count == -1) {
            perror("epoll_wait");
            exit(EXIT_FAILURE);
        }

        // 处理事件
        for (i = 0; i < event_count; i++) {
            if (events[i].data.fd