如何取消在Windows上的select()等待

#include <winsock2.h>
#include<windows.h>
#include<stdio.h>

int main()
{
    WSADATA wsaData;
    SOCKET s;
    struct sockaddr_in server, client;
    char buffer[1024];
    int client_len, recv_len;
    struct timeval timeout;
    fd_set readfds;

    // 初始化套接字库
    WSAStartup(MAKEWORD(2, 2), &wsaData);

    // 创建套接字
    s = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);

    // 设置套接字选项
    timeout.tv_sec = 5;
    timeout.tv_usec = 0;
    setsockopt(s, SOL_SOCKET, SO_RCVTIMEO, (char *)&timeout, sizeof(timeout));

    // 绑定套接字
    server.sin_family = AF_INET;
    server.sin_addr.s_addr = INADDR_ANY;
    server.sin_port = htons(8888);
    bind(s, (struct sockaddr *)&server, sizeof(server));

    // 监听套接字
    listen(s, 1);

    // 接受客户端连接
    client_len = sizeof(client);
    SOCKET client_s = accept(s, (struct sockaddr *)&client, &client_len);

    // 使用select()等待数据
    FD_ZERO(&readfds);
    FD_SET(client_s, &readfds);
    select(client_s + 1, &readfds, NULL, NULL, NULL);

    // 接收数据
    recv_len = recv(client_s, buffer, 1024, 0);
    buffer[recv_len] = '\0';
    printf("Received: %s\n", buffer);

    // 关闭套接字
    closesocket(client_s);
    closesocket(s);

    // 清理套接字库
    WSACleanup();

    return 0;
}