remote_logger.h

著名的 helix realplayer 基于手机 symbian 系统的 播放器全套源代码

/* ***** BEGIN LICENSE BLOCK ***** 
 * Version: RCSL 1.0/RPSL 1.0 
 *  
 * Portions Copyright (c) 1995-2002 RealNetworks, Inc. All Rights Reserved. 
 *      
 * The contents of this file, and the files included with this file, are 
 * subject to the current version of the RealNetworks Public Source License 
 * Version 1.0 (the "RPSL") available at 
 * http://www.helixcommunity.org/content/rpsl unless you have licensed 
 * the file under the RealNetworks Community Source License Version 1.0 
 * (the "RCSL") available at http://www.helixcommunity.org/content/rcsl, 
 * in which case the RCSL will apply. You may also obtain the license terms 
 * directly from RealNetworks.  You may not use this file except in 
 * compliance with the RPSL or, if you have a valid RCSL with RealNetworks 
 * applicable to this file, the RCSL.  Please see the applicable RPSL or 
 * RCSL for the rights, obligations and limitations governing use of the 
 * contents of the file.  
 *  
 * This file is part of the Helix DNA Technology. RealNetworks is the 
 * developer of the Original Code and owns the copyrights in the portions 
 * it created. 
 *  
 * This file, and the files included with this file, is distributed and made 
 * available on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 
 * EXPRESS OR IMPLIED, AND REALNETWORKS HEREBY DISCLAIMS ALL SUCH WARRANTIES, 
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, FITNESS 
 * FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 
 * 
 * Technology Compatibility Kit Test Suite(s) Location: 
 *    http://www.helixcommunity.org/content/tck 
 * 
 * Contributor(s): 
 *  
 * ***** END LICENSE BLOCK ***** */ 

#include "hxtypes.h"
#include "hxcom.h"

#include "hxengin.h"  // IHXNetworkServices
#include "hxccf.h"    // IHXCommonClassFactory
#include "ihxpckts.h" // IHXBuffer

#include "hxslist.h" // CHXSimpleList

typedef enum {HXLogOpen = 0xf1,
	      HXLogEntry = 0xf2,
	      HXLogClose = 0xf3} HXLogMesgType;

typedef enum {HXLogClosed,
	      HXLogConnecting,
	      HXLogConnected,
	      HXLogError} HXLoggerState;


class HXRemoteLogger : public IHXTCPResponse
{
public:
    HXRemoteLogger();
    ~HXRemoteLogger();

    HX_RESULT Init(IUnknown* pContext, 
		   const char* pRemoteHost,
		   UINT16 nRemotePort,
		   const char* pLogFilename);

    void Log(const char* pLogStr);
    void Close();

    /*
     *  IUnknown methods
     */
    STDMETHOD(QueryInterface)		(THIS_
					REFIID riid,
					void** ppvObj);

    STDMETHOD_(ULONG32,AddRef)		(THIS);

    STDMETHOD_(ULONG32,Release)		(THIS);

    /*
     *	IHXTCPResponse methods
     */

    /************************************************************************
     *	Method:
     *	    IHXTCPResponse::ConnectDone
     *	Purpose:
     *	    A Connect operation has been completed or an error has occurred.
     */
    STDMETHOD(ConnectDone)	(THIS_
				HX_RESULT		status);

    /************************************************************************
     *	Method:
     *	    IHXTCPResponse::ReadDone
     *	Purpose:
     *	    A Read operation has been completed or an error has occurred.
     *	    The data is returned in the IHXBuffer.
     */
    STDMETHOD(ReadDone)		(THIS_
				HX_RESULT		status,
				IHXBuffer*		pBuffer);

    /************************************************************************
     *	Method:
     *	    IHXTCPResponse::WriteReady
     *	Purpose:
     *	    This is the response method for WantWrite.
     *	    If HX_RESULT is ok, then the TCP channel is ok to Write to.
     */
    STDMETHOD(WriteReady)	(THIS_
    				HX_RESULT		status);

    /************************************************************************
     *	Method:
     *	    IHXTCPResponse::Closed
     *	Purpose:
     *	    This method is called to inform you that the TCP channel has
     *	    been closed by the peer or closed due to error.
     */
    STDMETHOD(Closed)		(THIS_
				HX_RESULT		status);
private:
    IHXBuffer* CopyBuffer(const char* pStr, UINT32 ulLength) const;
    
    void ClearMesgQueue();

    void OnError();
 
    HX_RESULT QueueMesg(HXLogMesgType type, IHXBuffer* pPayload);

    void SendQueuedMesgs();
    
    void PackUInt32(UCHAR* pBuf, UINT32 ulVal) const;
    HX_RESULT SendMesg(HXLogMesgType type, IHXBuffer* pPayload);
   
    ULONG32 m_lRefCount;

    IHXNetworkServices* m_pNetSvc;
    IHXCommonClassFactory* m_pCCF;
    IHXTCPSocket* m_pSocket;

    IHXBuffer* m_pRemoteHost;
    UINT16 m_remotePort;
    CHXSimpleList m_mesgList;

    HXLoggerState m_state;
    UINT32 m_seq;
};