cframe.cpp

多播服务器的c++源代码实现!实现了在windows平台用api编译的多播/组播编写方式的代码.

#include "CFrame.h"
#include <ace/Log_Msg.h>

#define LOBYTE_M(w)           ((ACE_CDR::Octet)((unsigned long)(w) & 0xff))
#define HIBYTE_M(w)           ((ACE_CDR::Octet)((unsigned long)(w) >> 8))

const
  ACE_CDR::UShort
  wCrcTab[256] = {
  0x0000, 0x1021, 0x2042, 0x3063, 0x4084, 0x50a5, 0x60c6, 0x70e7,
  0x8108, 0x9129, 0xa14a, 0xb16b, 0xc18c, 0xd1ad, 0xe1ce, 0xf1ef,
  0x1231, 0x0210, 0x3273, 0x2252, 0x52b5, 0x4294, 0x72f7, 0x62d6,
  0x9339, 0x8318, 0xb37b, 0xa35a, 0xd3bd, 0xc39c, 0xf3ff, 0xe3de,
  0x2462, 0x3443, 0x420, 0x1401, 0x64e6, 0x74c7, 0x44a4, 0x5485,
  0xa56a, 0xb54b, 0x8528, 0x9509, 0xe5ee, 0xf5cf, 0xc5ac, 0xd58d,
  0x3653, 0x2672, 0x1611, 0x0630, 0x76d7, 0x66f6, 0x5695, 0x46b4,
  0xb75b, 0xa77a, 0x9719, 0x8738, 0xf7df, 0xe7fe, 0xd79d, 0xc7bc,
  0x48c4, 0x58e5, 0x6886, 0x78a7, 0x0840, 0x1861, 0x2802, 0x3823,
  0xc9cc, 0xd9ed, 0xe98e, 0xf9af, 0x8948, 0x9969, 0xa90a, 0xb928,
  0x5af5, 0x4ad4, 0x7ab7, 0x6a96, 0x1a71, 0x0a50, 0x3a33, 0x2a12,
  0xdbfd, 0xcbdc, 0xfbbf, 0xeb9e, 0x9b79, 0x8b58, 0xbb3b, 0xab1a,
  0x6ca6, 0x7c87, 0x4ce4, 0x5cc5, 0x2c22, 0x3c03, 0x0c60, 0x1c41,
  0xedae, 0xfd8f, 0xcdec, 0xddcd, 0xada2, 0xbd08, 0x8d68, 0x9d49,
  0x7e97, 0x6eb6, 0x5ed5, 0x4ef4, 0x3e13, 0x2e32, 0x1e51, 0x0e70,
  0xff9f, 0xefbe, 0xdfdd, 0xcffc, 0xbf1b, 0xaf3a, 0x9f59, 0x8f78,
  0x9188, 0x81a9, 0xb1ca, 0xa1eb, 0xd10c, 0xc12d, 0xf14e, 0xe16f,
  0x1080, 0x00a1, 0x30c2, 0x20e3, 0x5004, 0x4025, 0x7046, 0x6067,
  0x83b9, 0x9398, 0xa3fb, 0xb3da, 0xc33d, 0xd31c, 0xe37f, 0xf35e,
  0x02b1, 0x1290, 0x22f3, 0x32d2, 0x4235, 0x5214, 0x6277, 0x7256,
  0xb5e2, 0xa5cb, 0x95a8, 0x8589, 0xf56e, 0xe54f, 0xd52c, 0xc50d,
  0x34ea, 0x24c3, 0x14a0, 0x0481, 0x7466, 0x6447, 0x5424, 0x4405,
  0xa7db, 0xb7fa, 0x8799, 0x97b8, 0xe75f, 0xf77e, 0xc71d, 0xd73c,
  0x26d3, 0x36f2, 0x0691, 0x16b0, 0x6657, 0x7676, 0x4615, 0x5634,
  0xd94c, 0xc96d, 0xf90e, 0xe92f, 0x99c8, 0x89e9, 0xb98a, 0xa9ab,
  0x5844, 0x4865, 0x7806, 0x6827, 0x18c0, 0x08e1, 0x3882, 0x28a3,
  0xcb7d, 0xdb5c, 0xeb3f, 0xfb1e, 0x8bf9, 0x9bd8, 0xabbb, 0xbb9a,
  0x4a75, 0x5a54, 0x6a37, 0x7a16, 0x0af1, 0x1ad0, 0x2ab3, 0x3a92,
  0xfd2e, 0xed0f, 0xdd6c, 0xcd4d, 0xbdaa, 0xad8b, 0x9de8, 0xbdc9,
  0x7c26, 0x6c07, 0x5c64, 0x4c45, 0x3ca2, 0x2c83, 0x1ce0, 0x0cc1,
  0xef1f, 0xff3e, 0xcf5d, 0xdf7c, 0xaf9b, 0xbfba, 0x8fd9, 0x9ff8,
  0x6e17, 0x7e36, 0x4e55, 0x5e74, 0x2e93, 0x3eb2, 0x0ed1, 0x1ef0
};


///////////////////////////////////////////////////////////
////CFrame 成员实现开始
///////////////////////////////////////////////////////////

/*
*加帧头
*wFrameId帧号，wSign标志号
*/
int
CFrame::AddHead (ACE_CDR::UShort wFrameId, ACE_CDR::UShort wSign)
{
  *((ACE_CDR::UShort *) pchDataCache) = wFrameId;
  *((ACE_CDR::UShort *) (pchDataCache + sizeof (ACE_CDR::UShort))) = wSign;
  return 0;
}

/*
*加帧数据
*wDataId为TagId号，dDataId为第2个TagId号，wDataLen为数据长度，pchDataValue为数据缓冲
*/
int
CFrame::AddData (ACE_CDR::UShort wDataId, ACE_CDR::UShort dDataId,
		 ACE_CDR::UShort wDataLen, ACE_CDR::Char * pchDataValue)
{
	if (wDataId < 128)
    {
		//为一个字节
		pchDataCache[FRAME_DATA_START_POSI + *pshFrameLen] =
			(ACE_CDR::Char) wDataId;
		(*pshFrameLen)++;
    }
	else
    {
		//为2个字节
		*((ACE_CDR::UShort *) (pchDataCache + FRAME_DATA_START_POSI +
			*pshFrameLen)) = wDataId;
		(*pshFrameLen) += 2;
    }
	memcpy (pchDataCache + FRAME_DATA_START_POSI + *pshFrameLen, pchDataValue,
		wDataLen);
	(*pshFrameLen) += wDataLen;
	return 0;
}

void
CFrame::AddCrcCheckSum ()
{
  ACE_CDR::UShort accum = 0;
  for (ACE_CDR::UShort i = 0;
       i < (ACE_CDR::UShort) (FRAME_DATA_START_POSI + *pshFrameLen); i++)
    accum =
      (accum << 8) ^ wCrcTab[((ACE_CDR::Octet) ((accum >> 8))) ^
			     ((ACE_CDR::Octet) pchDataCache[i])];

  pchDataCache[FRAME_DATA_START_POSI + *pshFrameLen] = HIBYTE_M (accum);
  pchDataCache[FRAME_DATA_START_POSI + *pshFrameLen + 1] = LOBYTE_M (accum);
};

void
CFrame::TranslateData ()
{
  int nDataLen;
  int DestIndex = 0;
  m_frameBuffer[DestIndex++] = STX;
  nDataLen = *pshFrameLen;
  for (int SourIndex = 0; SourIndex < FRAME_DATA_START_POSI + nDataLen + 2;
       SourIndex++)
    {
      if (pchDataCache[SourIndex] == STX || pchDataCache[SourIndex] == ETX
	  || pchDataCache[SourIndex] == '\\')
	{
	  m_frameBuffer[DestIndex++] = '\\';
	}

      m_frameBuffer[DestIndex++] = pchDataCache[SourIndex];
    }

  m_frameBuffer[DestIndex++] = ETX;
  m_frameLen = DestIndex;
};

/*
*获得帧数据缓冲地址
*/
ACE_CDR::Char * CFrame::GetDataBuf (void)
{
  return m_frameBuffer;
}

/*
*获得帧数据的长度
*/
ACE_CDR::UShort CFrame::GetDataLen (void)
{
  return m_frameLen;
}

///////////////////////////////////////////////////////////
////CFrame 成员实现结束
///////////////////////////////////////////////////////////



///////////////////////////////////////////////////////////
////CCreateFrame 成员实现开始
///////////////////////////////////////////////////////////

/*
*创建快照数据帧
*/
void
CCreateFrame::PackNewsTitleFrm (CFrame * pFrm, QuickDataStrc * pNwTrans)
{
	////////////封装快照帧////////////////////////////
	pFrm->AddHead (FRM_MARKET_DATA, 0);
	
	pFrm->AddData (TAG_INTERNAL_CODE, 0, sizeof (ACE_CDR::ULong),
		(ACE_CDR::Char *) & pNwTrans->dwInternal);
	
	pFrm->AddData (TAG_TIME_STAMP, 0, sizeof (XTimeStamp),
		(ACE_CDR::Char *) & pNwTrans->tTimeStamp);
	
	pFrm->AddData (TAG_PRE_CLOSE_PRICE_D, 0, sizeof (long),
		(ACE_CDR::Char *) & pNwTrans->dwClosePrice);	
	
	pFrm->AddData (TAG_OPEN_PRICE_D, 0, sizeof (long) ,
		(ACE_CDR::Char *)& pNwTrans->dwOpenPrice);
	
	pFrm->AddData (TAG_HIGH_PRICE_D, 0, sizeof (long) ,
		(ACE_CDR::Char *)& pNwTrans->dwHighPrice);
	
	pFrm->AddData (TAG_LOW_PRICE_D, 0, sizeof (long) ,
		(ACE_CDR::Char *) &pNwTrans->dwlowPrice);
	
	pFrm->AddData (TAG_NEW_PRICE_D, 0, sizeof (long) ,
		(ACE_CDR::Char *) &pNwTrans->dwNewPrice);
	
	pFrm->AddData (TAG_TRADE_TIME, 0, sizeof (ACE_CDR::ULong) ,
		(ACE_CDR::Char *)& pNwTrans->dwTradeTime);
	
	pFrm->AddData (TAG_COMMISSIONED_PRICE, 0, sizeof (unsigned char) ,
		(ACE_CDR::Char *)& pNwTrans->bFlag1);
	
	pFrm->AddData (TAG_BUY_PRICE_VOL_NUMBER, 0, sizeof (unsigned char) ,
		(ACE_CDR::Char *)& pNwTrans->bBidPriceLevel);
	
	//申买价1
	pFrm->AddData (TAG_BUY_PRICE_D, 0, sizeof (long) ,   
		(ACE_CDR::Char *) &pNwTrans->dwBidPx[0]);

	//申买价2
	pFrm->AddData (TAG_BUY_PRICE_D, 0, sizeof (long) ,   
		(ACE_CDR::Char *)& pNwTrans->dwBidPx[1]);

	//申买价3
	pFrm->AddData (TAG_BUY_PRICE_D, 0, sizeof (long) ,   
		(ACE_CDR::Char *) &pNwTrans->dwBidPx[2]);
	
	//申买量1
	pFrm->AddData (TAG_BUY_VOL_L, 0, sizeof (long long) ,   
		(ACE_CDR::Char *)& pNwTrans->llBidSize[0]);	
	
	
	//申买量2
	pFrm->AddData (TAG_BUY_VOL_L, 0, sizeof (long long) ,   
		(ACE_CDR::Char *)& pNwTrans->llBidSize[1]);		
	
	//申买量3
	pFrm->AddData (TAG_BUY_VOL_L, 0, sizeof (long long) ,   
		(ACE_CDR::Char *) &pNwTrans->llBidSize[2]);
	
	//申卖价量个数
	pFrm->AddData (TAG_SALL_PRICE_VOL_NUMBER, 0, sizeof (unsigned char) ,
		(ACE_CDR::Char *)& pNwTrans->bSallBidPriceCount);
	
	//申卖价1
	pFrm->AddData (TAG_SALL_PRICE_D, 0, sizeof (long) ,   
		(ACE_CDR::Char *)& pNwTrans->dwOfferPx[0]);

		//申卖价2
	pFrm->AddData (TAG_SALL_PRICE_D, 0, sizeof (long) ,   
		(ACE_CDR::Char *)& pNwTrans->dwOfferPx[1]);

	//申卖价3
	pFrm->AddData (TAG_SALL_PRICE_D, 0, sizeof (long) ,   
		(ACE_CDR::Char *) &pNwTrans->dwOfferPx[2]);
	
	//申卖量1
	pFrm->AddData (TAG_SALL_VOL_L, 0, sizeof (long long) ,   
		(ACE_CDR::Char *)& pNwTrans->llOfferSize[0]);
	
	//申卖量2
	pFrm->AddData (TAG_SALL_VOL_L, 0, sizeof (long long) ,   
		(ACE_CDR::Char *) &pNwTrans->llOfferSize[1]);	
	
	//申卖量3
	pFrm->AddData (TAG_SALL_VOL_L, 0, sizeof (long long) ,   
		(ACE_CDR::Char *)& pNwTrans->llOfferSize[2]);
	
    //成交总量
	pFrm->AddData (TAG_TRADE_TOTAL_NUMBER, 0, sizeof (long) ,   
		(ACE_CDR::Char *) &pNwTrans->llTradeTotal);
	
	
	pFrm->AddCrcCheckSum ();
	pFrm->TranslateData ();
};

/*
*创建一个快照数据帧
*/
bool CCreateFrame::CreateNewsFrm (QuickDataStrc * pNwTrans)
{
  

  if (NULL != pFrmData)
    return false; 
  
  pFrmData = new CFrame;

  ////////////封装快照数据帧////////////////////////////
  PackNewsTitleFrm (pFrmData, pNwTrans);

  return true;
};

///////////////////////////////////////////////////////////
////CCreateFrame 成员实现结束
///////////////////////////////////////////////////////////