发送udp包-windows网络编程_32代码自动发送一个udp包-优快云博客

本文链接：https://blog.youkuaiyun.com/chengxuetao/article/details/1890970

这是一个Windows平台上的UDP网络编程示例，用于发送视频和音频数据。程序创建两个套接字，分别对应5000和6000端口，向IP地址238.1.1.1发送'video data'和'audio data'，并使用sendto函数间隔0.5秒交替发送。

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// test.cpp : Defines the entry point for the console application.
//
#ifdef WIN32
#include "stdafx.h"
#include <WinSock2.h>

int _tmain(int argc, _TCHAR* argv[])
{
SOCKET rtpsock;

struct sockaddr_in video_sock;
struct sockaddr_in audio_sock;
unsigned short video_port = 5000;
unsigned short audio_port = 6000;
char ipstr[32] = "238.1.1.1";
unsigned int destip;

char videoBuf[1024]="send video data";
char audioBuf[1024]="send audio data";

#ifdef WIN32
//InitWinsock();
WSADATA wsaData;
if (WSAStartup(MAKEWORD(2,2),&wsaData)) //调用Windows Sockets DLL
{
  printf("WSAStartup/n");
  WSACleanup();
  return 0;
}
#endif

// Create socket
destip = inet_addr(ipstr);
// video socket
video_sock.sin_family=AF_INET;
video_sock.sin_port=htons(video_port); ///监听端口
video_sock.sin_addr.s_addr=destip;//inet_addr("238.1.1.1"); ///本机
// audio socket
audio_sock.sin_family=AF_INET;
audio_sock.sin_port=htons(audio_port); ///监听端口
audio_sock.sin_addr.s_addr=destip;//inet_addr("238.1.1.1"); ///本机

rtpsock=socket(AF_INET,SOCK_DGRAM,0);
while (1)
{
  printf("---------------Send video data-------------/n");
  sendto(rtpsock,videoBuf,strlen(videoBuf),0,(struct sockaddr*)&video_sock,sizeof(struct sockaddr));
  Sleep(500);
  printf("---------------Send audio data-------------/n");
  sendto(rtpsock,audioBuf,strlen(audioBuf),0,(struct sockaddr*)&audio_sock,sizeof(struct sockaddr));
  Sleep(500);

}
closesocket(rtpsock);

return 0;
}