哪位高手做过网络层组播流媒体系统？有没有这样的开源代码参考一下，多谢了！

[harezgq]

现在要做一个网络层组播流媒体系统，哪位高手给点思路？

[gaooo]

gz

[wormwormwormworm]

这个不好找啊

[lr21shiji]

ding

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关注

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[harezgq]

再顶！

[Estfania]

开源代码不是很清楚；
不过软件到有

[harezgq]

写了一个服务端和一个客户端程序；
客户端接不到组播数据；不知道什么原因
//server端
#include "winsock2.h"
#include <ws2tcpip.h>
#include "tpipv6.h" // For IPv6 Tech Preview.

#define MulticastAddress "224.0.0.8"
#define MulticastPort 25000
char sendbuf[6]="hello";
int numsend;
int iTTL=7;
SOCKET Sock,SockM; //多播套接字
DWORD cbRet;
bool bFlag,bJoin;
SOCKADDR_IN local,Remote,From; //分别指向本地、多播组和数据来源的IP地址与端口
int Fromlen;

void main()
{
WORD wVersionRequested;
WSADATA wsaData;
int iret;
wVersionRequested = MAKEWORD(2,2);
iret = WSAStartup(wVersionRequested, &wsaData); //初始化WinSock2资源
if(iret!= 0){
printf("不能加载Windows套接字动态链接库,MB_OK");
return;
}
if (LOBYTE(wsaData.wVersion) !=2 || HIBYTE(wsaData.wVersion) !=2){
printf("WinSock DLL不支持2.0版本,MB_OK");
WSACleanup( );
return;
}
//创建一个套接字
Sock=WSASocket(AF_INET,SOCK_DGRAM,IPPROTO_UDP,
(LPWSAPROTOCOL_INFO)NULL,0,WSA_FLAG_OVERLAPPED
| WSA_FLAG_MULTIPOINT_C_LEAF|WSA_FLAG_MULTIPOINT_D_LEAF);

//将套接字绑定到用户指定端口及默认的接口
memset(&local,0,sizeof(local));
local.sin_family=AF_INET;
local.sin_port=htons(MulticastPort);
local.sin_addr.s_addr=htonl(INADDR_ANY);
bind(Sock,(struct sockaddr FAR *)&local,sizeof(local));

//设置多播数据报传播范围（生存时间TTL）
WSAIoctl(Sock,SIO_MULTICAST_SCOPE,&iTTL,sizeof(int),
NULL,0,&cbRet,NULL,NULL);

memset(&Remote,0,sizeof(Remote));
Remote.sin_family=AF_INET;
Remote.sin_addr.s_addr=inet_addr(MulticastAddress);
Remote.sin_port=htons(MulticastPort);

//加入到指定的多播组，并指定作为发送者（JL_SENDER_ONLY）
/*
SockM=WSAJoinLeaf(Sock,(sockaddr*)&Remote,sizeof(Remote),
NULL,NULL,NULL,NULL,JL_SENDER_ONLY);
*/
while(1)
{
if (sendto(Sock,sendbuf,sizeof(sendbuf),0,(sockaddr*)&Remote,sizeof(Remote))==SOCKET_ERROR)
{
printf("sendto failed with: %d\n",WSAGetLastError());
closesocket(SockM);
closesocket(Sock);
WSACleanup();
return;
}
Sleep(20);
}
}
//客户端
#include "winsock2.h"
#include <ws2tcpip.h>
#include "tpipv6.h" // For IPv6 Tech Preview.

#define MulticastAddress "224.0.0.8"
#define MulticastPort 25000
char recvbuf[6];
int numsend;
int iTTL=7;
SOCKET Sock,SockM; //多播套接字
DWORD cbRet;
bool bFlag,bJoin;
SOCKADDR_IN local,Remote,From; //分别指向本地、多播组和数据来源的IP地址与端口
int Fromlen,ret;


void main()
{
WORD wVersionRequested;
WSADATA wsaData;
int iret;
wVersionRequested = MAKEWORD(2,2);
iret = WSAStartup(wVersionRequested, &wsaData); //初始化WinSock2资源
if(iret!= 0){
printf("不能加载Windows套接字动态链接库,MB_OK");
return;
}
if (LOBYTE(wsaData.wVersion) !=2 || HIBYTE(wsaData.wVersion) !=2){
printf("WinSock DLL不支持2.0版本,MB_OK");
WSACleanup( );
return;
}
//创建一个套接字
Sock=WSASocket(AF_INET,SOCK_DGRAM,IPPROTO_UDP,
(LPWSAPROTOCOL_INFO)NULL,0,WSA_FLAG_OVERLAPPED
| WSA_FLAG_MULTIPOINT_C_LEAF|WSA_FLAG_MULTIPOINT_D_LEAF);

//将套接字绑定到用户指定端口及默认的接口
memset(&local,0,sizeof(local));
local.sin_family=AF_INET;
local.sin_port=htons(MulticastPort);
local.sin_addr.s_addr=htonl(INADDR_ANY);
bind(Sock,(struct sockaddr FAR *)&local,sizeof(local));

//设置多播数据报传播范围（生存时间TTL）
WSAIoctl(Sock,SIO_MULTICAST_SCOPE,&iTTL,sizeof(int),
NULL,0,&cbRet,NULL,NULL);

memset(&Remote,0,sizeof(Remote));
Remote.sin_family=AF_INET;
Remote.sin_addr.s_addr=inet_addr(MulticastAddress);
Remote.sin_port=htons(MulticastPort);
//加入到指定的多播组，并指定为接收者（JL_RECEIVER_ONLY）
if((SockM=WSAJoinLeaf(Sock,(sockaddr*)&Remote,sizeof(Remote),
NULL,NULL,NULL,NULL,JL_RECEIVER_ONLY))==INVALID_SOCKET)
{
printf("WSAJoinLeaf() failed:%d\n",WSAGetLastError());
closesocket(Sock);
WSACleanup();
return;
}
while(1)
{
if ((ret = recvfrom(SockM,recvbuf,sizeof(recvbuf),0,(sockaddr *)&From,&Fromlen))==SOCKET_ERROR)
{
printf("recvfrom failed with:%d\n",WSAGetLastError());
closesocket(SockM);
closesocket(Sock);
WSACleanup();
return;
}
//AfxMessageBox(recvbuf);
if (strcmp(recvbuf,"hello")==0)
{
printf("client has received data");
break;
}
}
}

[harezgq]

up.

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www.openh323.org
http://www.voxgratia.org/downloads.html

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