natfw/natfwunsaf_protocols/unsaf_transport/src/tnatfwunsafmsgstateheaderstart.cpp
/*
* Copyright (c) 2006-2007 Nokia Corporation and/or its subsidiary(-ies).
* All rights reserved.
* This component and the accompanying materials are made available
* under the terms of "Eclipse Public License v1.0"
* which accompanies this distribution, and is available
* at the URL "http://www.eclipse.org/legal/epl-v10.html".
*
* Initial Contributors:
* Nokia Corporation - initial contribution.
*
* Contributors:
*
* Description:
*
*/
#include "tnatfwunsafmsgstateheaderstart.h"
#include "mnatfwunsafmsgassemblerctx.h"
// ----------------------------------------------------------------------------
// TNATFWUNSAFMsgStateHeaderStart::DataReceivedL
// ----------------------------------------------------------------------------
//
TBool TNATFWUNSAFMsgStateHeaderStart::DataReceivedL(
TPtr8 aData,
TUint& aNextLength )
{
TInt messageLength( iMsgAssembler.MessageLength() );
__ASSERT_ALWAYS( messageLength > 0,
User::Leave( KErrNotReady ) );
TBool retVal( EFalse );
if ( iMsgAssembler.MsgBuffer().Size() > 0 )
{
// If there's existing data in msg buffer insert the received data
// to msg buffer.
iMsgAssembler.MsgBuffer().InsertL( iMsgAssembler.MsgBuffer().Size(),
aData );
iMsgAssembler.MsgBuffer().Compress();
// delete content of received data.
aData.Delete( 0, aData.Length() );
TPtr8 bufPtr = iMsgAssembler.MsgBuffer().Ptr( 0 );
if ( bufPtr.Length() >= messageLength )
{
// There's enough data for complete NATFWUNSAF msg
HBufC8* newData = HBufC8::NewLC( bufPtr.Length() );
// copy the msg buffer data to new data
TPtr8 newDataPtr = newData->Des();
newDataPtr.Append( bufPtr );
// clean the msg buffer
iMsgAssembler.MsgBuffer().Reset();
iMsgAssembler.MsgBuffer().Compress();
iMsgAssembler.ChangeState(
TNATFWUNSAFMsgStateBase::EMsgHeaderEnd );
retVal =
iMsgAssembler.CurrentState().DataReceivedL( newDataPtr,
aNextLength );
CleanupStack::PopAndDestroy( newData );
}
}
else if ( aData.Length() >= messageLength )
{
// There's enough data for complete NATFWUNSAF msg
iMsgAssembler.ChangeState( TNATFWUNSAFMsgStateBase::EMsgHeaderEnd );
retVal =
iMsgAssembler.CurrentState().DataReceivedL( aData, aNextLength );
}
else
{
// There's not enough data for complete UNSAF message,
// wait for more incoming data
iMsgAssembler.MsgBuffer().InsertL( iMsgAssembler.MsgBuffer().Size(),
aData );
iMsgAssembler.MsgBuffer().Compress();
aNextLength =
messageLength - iMsgAssembler.MsgBuffer().Ptr( 0 ).Length();
}
return retVal;
}
// End of File