如何在WINDOWS下用C/C++在UDP套接字中设置超时？

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

int main() {
    // 初始化Winsock库
    WSADATA wsaData;
    if (WSAStartup(MAKEWORD(2, 2), &wsaData) != 0) {
        printf("Failed to initialize Winsock\n");
        return 1;
    }

    // 创建UDP套接字
    SOCKET sock = socket(AF_INET, SOCK_DGRAM, 0);
    if (sock == INVALID_SOCKET) {
        printf("Failed to create socket\n");
        WSACleanup();
        return 1;
    }

    // 设置接收超时
    struct timeval timeout;
    timeout.tv_sec = 5;  // 设置超时时间为5秒
    timeout.tv_usec = 0;
    if (setsockopt(sock, SOL_SOCKET, SO_RCVTIMEO, (char*)&timeout, sizeof(timeout)) == SOCKET_ERROR) {
        printf("Failed to set receive timeout\n");
        closesocket(sock);
        WSACleanup();
        return 1;
    }

    // 绑定套接字
    struct sockaddr_in serverAddr;
    serverAddr.sin_family = AF_INET;
    serverAddr.sin_port = htons(12345);  // 设置绑定的端口号
    serverAddr.sin_addr.s_addr = INADDR_ANY;
    if (bind(sock, (struct sockaddr*)&serverAddr, sizeof(serverAddr)) == SOCKET_ERROR) {
        printf("Failed to bind socket\n");
        closesocket(sock);
        WSACleanup();
        return 1;
    }

    // 接收数据
    char buffer[1024];
    struct sockaddr_in clientAddr;
    int clientAddrLen = sizeof(clientAddr);
    int recvLen = recvfrom(sock, buffer, sizeof(buffer), 0, (struct sockaddr*)&clientAddr, &clientAddrLen);
    if (recvLen == SOCKET_ERROR) {
        printf("Receive timeout or error\n");
    } else {
        buffer[recvLen] = '\0';
        printf("Received data: %s\n", buffer);
    }

    // 关闭套接字和清理Winsock库
    closesocket(sock);
    WSACleanup();

    return 0;
}