networkprotocolmodules/suplprotocolmodule/SuplConnectionManager/src/socketreader.cpp
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Tue, 02 Feb 2010 01:50:39 +0200
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permissions -rw-r--r--
Revision: 201002 Kit: 201005
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#include <e32debug.h>
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// Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies).
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// All rights reserved.
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// This component and the accompanying materials are made available
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// under the terms of "Eclipse Public License v1.0"
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// which accompanies this distribution, and is available
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// at the URL "http://www.eclipse.org/legal/epl-v10.html".
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//
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// Initial Contributors:
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// Nokia Corporation - initial contribution.
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//
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// Contributors:
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//
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// Description:
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//
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/**
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 @file
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 @internalComponent
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 @deprecated
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*/
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#include "socketreader.h"
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#include "supldevloggermacros.h"
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#include "suplasn1decoder.h"
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#include "suplmessagebase.h"
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CSocketReader* CSocketReader::NewL(RSocket& aSocket, MSuplSocketObserver& aObserver, TUint aCallbackId)
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	{
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	SUPLLOG(ELogP1, "CSocketReader::NewL() Begin\n");
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	CSocketReader* self = new (ELeave) CSocketReader(aSocket, aObserver, aCallbackId);
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	CleanupStack::PushL(self);
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	self->ConstructL();
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	CleanupStack::Pop(self);
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	SUPLLOG(ELogP1, "CSocketReader::NewL() End\n");
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	return self;
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	}
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CSocketReader::~CSocketReader()
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	{
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	SUPLLOG(ELogP1, "CSocketReader::~CSocketReader() Begin\n");
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	Cancel();
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	//iSocket.Close(); => Passed in as reference
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	iBuffer.Close();
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	delete iDecoder;
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	SUPLLOG(ELogP1, "CSocketReader::~CSocketReader() End\n");
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	}
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CSocketReader::CSocketReader(RSocket& aSocket, MSuplSocketObserver& aObserver, TUint aCallbackId) :
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	CActive(EPriorityStandard), iSocket(aSocket), iObserver(aObserver), iIsFirstFragment(ETrue), 
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	iCurrentMessageSize(0), iReadSoFar(0), iPtr(NULL, 0), iCallbackId(aCallbackId)
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	{
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	SUPLLOG(ELogP1, "CSocketReader::CSocketReader() Begin\n");
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	CActiveScheduler::Add(this);
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	SUPLLOG(ELogP1, "CSocketReader::CSocketReader() End\n");
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	}
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void CSocketReader::ConstructL()
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	{
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	SUPLLOG(ELogP1, "CSocketReader::ConstructL() Begin\n");
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	iBuffer.CreateL(KSuplMaxMessageLength);
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	iBuffer.SetLength(iBuffer.MaxLength());
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	iDecoder = CSuplAsn1Decoder::NewL();
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	IssueRead();
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	SUPLLOG(ELogP1, "CSocketReader::ConstructL() End\n");
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	}
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void CSocketReader::RunL()
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	{
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	SUPLLOG(ELogP1, "CSocketReader::RunL() Begin\n");
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	TBool cleanup = EFalse;
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	if (iStatus == KErrNone)
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		{
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		iReadSoFar += iBufferRead();
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		if (iIsFirstFragment && (iReadSoFar > 1)) // If first fragment we need to get the size of the data
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			{
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			SuplMessageLength();
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			iIsFirstFragment = EFalse;
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			} // if
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		if (iReadSoFar == iCurrentMessageSize)
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			{
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			// Fire observation
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			iBuffer.SetLength(iCurrentMessageSize);
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			FireObservation();
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			iIsFirstFragment = ETrue;
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			iCurrentMessageSize = 0;
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			iReadSoFar = 0;
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			iBuffer.SetLength(iBuffer.MaxLength());
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			} // if
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		else if (iReadSoFar > iCurrentMessageSize)
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			{
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			SUPLLOG(ELogP1, "CSocketReader::RunL(), ReadSoFar > CurrentMessageSize\n");
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			SUPLLOG(ELogP1, "CSocketReader::FireObservation() Firing ConnectionError\n");
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			iObserver.ConnectionError(MSuplSocketObserver::ETooMuchDataRead, iCallbackId, 0, cleanup);
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			if (cleanup)
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				{
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				delete this;
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				}
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			} // else if
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		else
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			{
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			// Do nothing.
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			}
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parents:
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   111
		
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		// Kick off the read again
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		if (!cleanup)	//cleanup status from iObserver.ConnectionError
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			{
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			IssueRead();
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			}
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		} // if
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	else
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		{
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		SUPLLOG(ELogP1, "CSecureSocketReader::FireObservation() Firing ConnectionError\n");
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   121
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		iObserver.ConnectionError(MSuplSocketObserver::EFailedToRead, iCallbackId, 0, cleanup);
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		if (cleanup)
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			{
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			delete this;
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			}
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		}
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	SUPLLOG(ELogP1, "CSocketReader::RunL() End\n");
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	}
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   130
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void CSocketReader::DoCancel()
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	{
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	SUPLLOG(ELogP1, "CSocketReader::DoCancel() Begin\n");
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	iSocket.CancelRecv();
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	SUPLLOG(ELogP1, "CSocketReader::DoCancel() End\n");
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	}
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   137
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void CSocketReader::RunError()
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	{
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	SUPLLOG(ELogP1, "CSocketReader::RunError() Begin\n");
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	ASSERT(EFalse);
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	SUPLLOG(ELogP1, "CSocketReader::RunError() End\n");
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	}
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   144
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void CSocketReader::IssueRead()
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	{
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	SUPLLOG(ELogP1, "CSocketReader::IssueRead() Begin\n");
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	if (!IsActive())
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		{
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		TPtr8 ptr = iBuffer.MidTPtr(iReadSoFar);
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		iPtr.Set(const_cast<TUint8*>(ptr.Ptr()), 0, ptr.MaxLength());
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		iSocket.RecvOneOrMore(iPtr, 0, iStatus, iBufferRead);
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		SetActive();
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		}
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	SUPLLOG(ELogP1, "CSocketReader::IssueRead() End\n");
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	}
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   157
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void CSocketReader::SuplMessageLength()
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{
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	SUPLLOG(ELogP1, "CSocketReader::SuplMessageLength() Begin\n");
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	// Get the first two bytes of iBuffer as a TInt and put it in iSuplMessageLength
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	iCurrentMessageSize = STATIC_CAST(TUint8,iBuffer[0]);
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	iCurrentMessageSize = iCurrentMessageSize << 8;
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	iCurrentMessageSize |= STATIC_CAST(TUint8,iBuffer[1]);
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	SUPLLOG(ELogP1, "CSocketReader::SuplMessageLength() End\n");
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}
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   167
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void CSocketReader::FireObservation()
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	{
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	SUPLLOG(ELogP1, "CSocketReader::FireObservation() Begin\n");
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	CSuplMessageBase* message = NULL; 
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	TInt err;
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	TInt traperr = err = KErrNone;
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	TPtrC8 ptr(iBuffer);
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	TRAP(traperr, message = iDecoder->DecodeL(&ptr, err));
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	if ((err != KErrNone) || (traperr != KErrNone))
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		{
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		// Fire error message => Session Id is not known
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		TBool cleanup = EFalse;
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		iObserver.ConnectionError(MSuplSocketObserver::EFailedToDecode, iCallbackId, 0, cleanup);
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		if (cleanup)
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			{
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			delete this;
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   184
			}
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		}
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	else
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		{
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		iObserver.MessageReceived(message); // Passes ownership
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		}
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	SUPLLOG(ELogP1, "CSocketReader::FireObservation() End\n");
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   191
	}
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   192
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   193
/*****************************************************************************
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 * CSecureSocketReader 
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 */
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CSecureSocketReader* CSecureSocketReader::NewL(CSecureSocket& aSocket, MSuplSocketObserver& aObserver, TUint aCallbackId)
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   197
	{
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	SUPLLOG(ELogP1, "CSecureSocketReader::NewL() Begin\n");
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	CSecureSocketReader* self = new (ELeave) CSecureSocketReader(aSocket, aObserver, aCallbackId);
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	CleanupStack::PushL(self);
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   201
	self->ConstructL();
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	CleanupStack::Pop(self);
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   203
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	SUPLLOG(ELogP1, "CSecureSocketReader::NewL() End\n");
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   205
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	return self;
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   207
	}
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   208
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   209
CSecureSocketReader::~CSecureSocketReader()
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	{
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	SUPLLOG(ELogP1, "CSecureSocketReader::~CSecureSocketReader() Begin\n");
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	Cancel();
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	//iSocket.Close(); => Passed in as reference
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	iBuffer.Close();
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	delete iDecoder;
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	SUPLLOG(ELogP1, "CSecureSocketReader::~CSecureSocketReader() End\n");
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   217
	}
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   218
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   219
CSecureSocketReader::CSecureSocketReader(CSecureSocket& aSocket, MSuplSocketObserver& aObserver, TUint aCallbackId) :
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	CActive(EPriorityStandard), iSocket(aSocket), iObserver(aObserver), iIsFirstFragment(ETrue), 
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	iCurrentMessageSize(0), iReadSoFar(0),  iPtr(NULL, 0), iCallbackId(aCallbackId)
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	{
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	SUPLLOG(ELogP1, "CSecureSocketReader::CSecureSocketReader() Begin\n");
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	CActiveScheduler::Add(this);
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	SUPLLOG(ELogP1, "CSecureSocketReader::CSecureSocketReader() End\n");
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	}
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void CSecureSocketReader::ConstructL()
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	{
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	SUPLLOG(ELogP1, "CSecureSocketReader::ConstructL() Begin\n");
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	iBuffer.CreateL(KSuplMaxMessageLength);
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	iBuffer.SetLength(KSuplMaxMessageLength);
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	iDecoder = CSuplAsn1Decoder::NewL();
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   234
	
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	IssueRead();
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	SUPLLOG(ELogP1, "CSecureSocketReader::ConstructL() End\n");
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	}
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void CSecureSocketReader::RunL()
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	{
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	SUPLLOG2(ELogP1, "CSecureSocketReader::RunL() Begin, iStatus: %d\n", iStatus.Int());
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	TBool cleanup = EFalse;
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	if (iStatus == KErrNone)
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		{
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		iReadSoFar += iBufferRead();
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		if (iIsFirstFragment && (iReadSoFar > 1)) // If first fragment we need to get the size of the data
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			{
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			SuplMessageLength();
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			iIsFirstFragment = EFalse;
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			} // if
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   251
		
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		if (iReadSoFar == iCurrentMessageSize)
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			{
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			// Fire observation
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			iBuffer.SetLength(iCurrentMessageSize);
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			FireObservation();
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			iIsFirstFragment = ETrue;
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			iCurrentMessageSize = 0;
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			iReadSoFar = 0;
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			iBuffer.SetLength(iBuffer.MaxLength());
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			} // if
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		else if (iReadSoFar > iCurrentMessageSize)
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			{
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			SUPLLOG(ELogP1, "CSecureSocketReader::RunL(), ReadSoFar > CurrentMessageSize\n");
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			SUPLLOG(ELogP1, "CSecureSocketReader::FireObservation() Firing ConnectionError\n");
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			iObserver.ConnectionError(MSuplSocketObserver::ETooMuchDataRead, iCallbackId, 0, cleanup);
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			if (cleanup)
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				{
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				delete this;
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				}
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			} // else if
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		else
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			{
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			// Nothing to do just fall through, as we always want to re-issue the read.
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			}
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		// Kick off the read again
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		if (!cleanup)	//cleanup status from iObserver.ConnectionError
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			{
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			IssueRead();
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			}
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		} // if
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	else
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		{
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		SUPLLOG(ELogP1, "CSecureSocketReader::FireObservation() Firing ConnectionError\n");
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		iObserver.ConnectionError(MSuplSocketObserver::EFailedToRead, iCallbackId, 0, cleanup);
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		if (cleanup)
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			{
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			delete this;
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			}
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		}
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	SUPLLOG(ELogP1, "CSecureSocketReader::RunL() End\n");
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	}
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void CSecureSocketReader::DoCancel()
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	{
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	SUPLLOG(ELogP1, "CSecureSocketReader::DoCancel() Begin\n");
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	iSocket.CancelAll();
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	SUPLLOG(ELogP1, "CSecureSocketReader::DoCancel() End\n");
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	}
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   304
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void CSecureSocketReader::RunError()
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	{
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	SUPLLOG(ELogP1, "CSecureSocketReader::RunError() Begin\n");
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	SUPLLOG(ELogP1, "CSecureSocketReader::RunError() End\n");
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	}
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   310
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void CSecureSocketReader::IssueRead()
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	{
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	SUPLLOG(ELogP1, "CSecureSocketReader::IssueRead() Begin\n");
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	if (!IsActive())
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		{
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		TPtr8 ptr = iBuffer.MidTPtr(iReadSoFar);
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		iPtr.Set(const_cast<TUint8*>(ptr.Ptr()), 0, ptr.MaxLength());
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		iSocket.RecvOneOrMore(iPtr, iStatus, iBufferRead);
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		SetActive();
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		}
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	SUPLLOG(ELogP1, "CSecureSocketReader::IssueRead() End\n");
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	}
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   323
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void CSecureSocketReader::SuplMessageLength()
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{
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	SUPLLOG(ELogP1, "CSecureSocketReader::SuplMessageLength() Begin\n");
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	// Get the first two bytes of iBuffer as a TInt and put it in iSuplMessageLength
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	iCurrentMessageSize = STATIC_CAST(TUint8,iBuffer[0]);
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	iCurrentMessageSize = iCurrentMessageSize << 8;
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	iCurrentMessageSize |= STATIC_CAST(TUint8,iBuffer[1]);
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	SUPLLOG(ELogP1, "CSecureSocketReader::SuplMessageLength() End\n");
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   332
}
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   333
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   334
void CSecureSocketReader::FireObservation()
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	{
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	SUPLLOG(ELogP1, "CSecureSocketReader::FireObservation() Begin\n");
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   337
	CSuplMessageBase* message = NULL; 
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	TInt err;
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   339
	TInt traperr = err = KErrNone;
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   340
	TPtrC8 ptr(iBuffer);
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	TRAP(traperr, message = iDecoder->DecodeL(&ptr, err));
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	if ((err != KErrNone) || (traperr != KErrNone))
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   343
		{
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		// Fire error message
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		SUPLLOG(ELogP1, "CSecureSocketReader::FireObservation() Firing ConnectionError\n");
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   346
		TBool cleanup = EFalse;
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		iObserver.ConnectionError(MSuplSocketObserver::EFailedToDecode, iCallbackId, 0, cleanup);
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		if (cleanup)
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   349
			{
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			delete this;
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   351
			}
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		}
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	else
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		{
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		iObserver.MessageReceived(message); // Passes ownership
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		}
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	SUPLLOG(ELogP1, "CSecureSocketReader::FireObservation() End\n");
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   358
	}