设置winsock recvfrom的超时时间

#include <winsock2.h>
#include <ws2tcpip.h>
#include<stdio.h>

int main() {
    WSADATA wsaData;
    int iResult;
    SOCKET RecvSocket;
    sockaddr_in RecvAddr;
    char RecvBuf[1024];
    int BufLen = 1024;
    int Timeout = 5000; // 设置超时时间为5秒

    // 初始化套接字库
    iResult = WSAStartup(MAKEWORD(2, 2), &wsaData);
    if (iResult != 0) {
        printf("WSAStartup failed with error: %d\n", iResult);
        return 1;
    }

    // 创建套接字
    RecvSocket = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
    if (RecvSocket == INVALID_SOCKET) {
        printf("socket failed with error: %ld\n", WSAGetLastError());
        WSACleanup();
        return 1;
    }

    // 设置套接字的SO_RCVTIMEO选项
    if (setsockopt(RecvSocket, SOL_SOCKET, SO_RCVTIMEO, (char*)&Timeout, sizeof(Timeout)) == SOCKET_ERROR) {
        printf("setsockopt failed with error: %ld\n", WSAGetLastError());
        closesocket(RecvSocket);
        WSACleanup();
        return 1;
    }

    // 绑定套接字到本地地址
    RecvAddr.sin_family = AF_INET;
    RecvAddr.sin_port = htons(5150);
    RecvAddr.sin_addr.s_addr = INADDR_ANY;
    if (bind(RecvSocket, (SOCKADDR*)&RecvAddr, sizeof(RecvAddr)) == SOCKET_ERROR) {
        printf("bind failed with error: %ld\n", WSAGetLastError());
        closesocket(RecvSocket);
        WSACleanup();
        return 1;
    }

    // 接收数据
    iResult = recvfrom(RecvSocket, RecvBuf, BufLen, 0, NULL, NULL);
    if (iResult == SOCKET_ERROR) {
        printf("recvfrom failed with error: %ld\n", WSAGetLastError());
        closesocket(RecvSocket);
        WSACleanup();
        return 1;
    }

    // 输出接收到的数据
    printf("Received %d bytes:\n", iResult);
    printf("%s\n", RecvBuf);

    // 关闭套接字
    closesocket(RecvSocket);
    WSACleanup();

    return 0;
}