cudpsocket-

无线数据服务中心源代码：移动或联通的无限数据终端将采集到的数据通过Internet传送到数据中心

CUdpSocket 使用：

#define	FT_LOGIN	1
#define	FT_DATA		3

BOOL InitSocketLib()
{
	WSADATA wsaData;
	WORD wVersionRequested = MAKEWORD(2, 0);
	if (WSAStartup(wVersionRequested, &wsaData) != 0) 
		return FALSE;
 
	if (LOBYTE(wsaData.wVersion) != 2 ||
	    HIBYTE(wsaData.wVersion) != 0) 
	{
		WSACleanup();
		return FALSE;
	}

	return TRUE;
}

初始化：
		CUdpSocket* pUdpSocket = new CUdpSocket();

		pUdpSocket->SetCommLink(this);
		pUdpSocket->SetLocalIpAddress(ipAddr);
		pUdpSocket->Start();

接收报文回调：

void CGT3010VSPDlg::OnRxUdpPackage(CUdpSocket* pUdpSocket, CIpAddress& ipAddrPeer, BYTE* p, DWORD dwLen)
{
	switch (p[12])
	{
	case FT_LOGIN:
		OnRxLogin(pUdpSocket, ipAddrPeer, p, dwLen);
		break;
	case FT_DATA:
		OnRxData(pUdpSocket, ipAddrPeer, p, dwLen);
		break;
	}
}


写数据：
#pragma pack(1)
	typedef struct 
	{
		char	szGsmCode[12];
		BYTE	ucFrameType;
	} ST_DATA_HEAD;
	struct
	{
		ST_DATA_HEAD head;
		BYTE ucData[BUF_SIZE];
	} stData;
#pragma pack()
	
	pUdpSocket->Write(ipAddressPeer, (BYTE*)&stData, nActualWrite + sizeof(ST_DATA_HEAD));