multisock_s.h

组播网络程序测试,对于学习组播技术有帮助

// MultiSock.h: interface for the CMultiSock class.
//
//////////////////////////////////////////////////////////////////////

#if !defined(AFX_MULTISOCK_H__995E1571_B989_432A_87FC_3460E5F3E566__INCLUDED_)
#define AFX_MULTISOCK_H__995E1571_B989_432A_87FC_3460E5F3E566__INCLUDED_

#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000
#define UDP_BUF_LEN 128*1024
class CMultiSock  
{
public:
	int Startup(char * strMultiIP,DWORD dwMultiPort,char * strLocalIP,DWORD dwLocalPort,int nTTL);
	int Startup_(SOCKADDR_IN myAddr, SOCKADDR_IN multiAddr,int nTTL);
	
	int Startup(SOCKADDR_IN myAddr,SOCKADDR_IN multiAddr);
    int Startup(SOCKADDR_IN myAddr, SOCKADDR_IN multiAddr,int nTTL);
	    
	SOCKET	m_sMultSock,sockCM;

	int Close();
	int SendData(LPVOID lpBuf, int iSize);
	
	CMultiSock();
	virtual ~CMultiSock();
    operator SOCKET() const {return m_sMultSock;}
protected:
    int m_nBufferLenth;
	SOCKADDR_IN	 m_MultAddr;
	SOCKADDR_IN myHostAddr;
	struct ip_mreq m_mreq;

};

#endif // !defined(AFX_MULTISOCK_H__995E1571_B989_432A_87FC_3460E5F3E566__INCLUDED_)