C++ 简单的UDP 接受发送 demo

crescentgear

于 2024-08-28 21:35:00 发布

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CC 4.0 BY-SA版权

分类专栏：网络编程文章标签： c++ udp 网络

本文链接：https://blog.youkuaiyun.com/whiteclock/article/details/141650517

服务端:

#include <iostream>
#include <WinSock2.h>

#pragma comment(lib, "ws2_32.lib")

using std::cout;
using std::endl;

int main()
{
    WSADATA wsa;
    if (WSAStartup(MAKEWORD(2, 2), &wsa) != 0)
    {
        cout << "WSA Error" << endl;
        return 0;
    }
    sockaddr_in sd;
    sd.sin_family = AF_INET;
    sd.sin_port = htons(2345);
    sd.sin_addr.S_un.S_addr = inet_addr("127.0.0.1");

    SOCKET sock = socket(PF_INET, SOCK_DGRAM, IPPROTO_UDP);
    if (sock == INVALID_SOCKET)
    {
        cout << "socket error" << endl;
        return 0;
    }
    if (bind(sock, (sockaddr *)&sd, sizeof(sd)) == SOCKET_ERROR)
    {
        cout << "bind error" << endl;
        return 0;
    }
    sockaddr_in clientSd;

    char buf[1024] = "";
    int len = sizeof(clientSd);
    i