author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Tue, 02 Feb 2010 01:04:58 +0200 | |
changeset 0 | 1bce908db942 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2006-2007 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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/* |
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TCP Relay packet header: |
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0 1 2 3 |
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0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 |
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+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
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| Relay type | Reserved=0x00 | Data length | |
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+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
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*/ |
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#include <es_sock.h> |
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#include "natfwunsaftcprelaypacket.h" |
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#include "natfwunsafutils.h" |
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// CONSTANTS |
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const TInt KByteSize = 8; |
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// ----------------------------------------------------------------------------- |
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// CNATFWUNSAFTcpRelayPacket::NewL |
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// ----------------------------------------------------------------------------- |
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// |
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EXPORT_C CNATFWUNSAFTcpRelayPacket* CNATFWUNSAFTcpRelayPacket::NewL( |
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const TDesC8& aData, |
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const TRelayType aType) |
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{ |
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CNATFWUNSAFTcpRelayPacket* self = |
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CNATFWUNSAFTcpRelayPacket::NewLC(aData, aType); |
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CleanupStack::Pop(self); |
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return self; |
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} |
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// ----------------------------------------------------------------------------- |
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// CNATFWUNSAFTcpRelayPacket::NewLC |
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// ----------------------------------------------------------------------------- |
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// |
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EXPORT_C CNATFWUNSAFTcpRelayPacket* CNATFWUNSAFTcpRelayPacket::NewLC( |
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const TDesC8& aData, |
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const TRelayType aType) |
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{ |
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CNATFWUNSAFTcpRelayPacket* self = |
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new (ELeave) CNATFWUNSAFTcpRelayPacket(); |
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CleanupStack::PushL(self); |
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self->ConstructL(aData, aType); |
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return self; |
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} |
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// ----------------------------------------------------------------------------- |
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// CNATFWUNSAFTcpRelayPacket::CreateL |
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// ----------------------------------------------------------------------------- |
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// |
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CNATFWUNSAFTcpRelayPacket* CNATFWUNSAFTcpRelayPacket::CreateL( |
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const TDesC8& aData, |
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const TRelayType aType ) |
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{ |
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return NewL(aData, aType); |
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} |
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// ----------------------------------------------------------------------------- |
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// CNATFWUNSAFTcpRelayPacket::CNATFWUNSAFTcpRelayPacket |
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// ----------------------------------------------------------------------------- |
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// |
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CNATFWUNSAFTcpRelayPacket::CNATFWUNSAFTcpRelayPacket() |
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{ |
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} |
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// ----------------------------------------------------------------------------- |
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// CNATFWUNSAFTcpRelayPacket::~CNATFWUNSAFTcpRelayPacket |
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// ----------------------------------------------------------------------------- |
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// |
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CNATFWUNSAFTcpRelayPacket::~CNATFWUNSAFTcpRelayPacket() |
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{ |
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delete iData; |
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} |
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// ----------------------------------------------------------------------------- |
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// CNATFWUNSAFTcpRelayPacket::ConstructL |
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// ----------------------------------------------------------------------------- |
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// |
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void CNATFWUNSAFTcpRelayPacket::ConstructL( |
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const TDesC8& aData, |
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const TRelayType aType ) |
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{ |
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CheckLengthL(aData.Length()); |
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iData = aData.AllocL(); |
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iType = aType; |
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} |
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// ----------------------------------------------------------------------------- |
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// CNATFWUNSAFTcpRelayPacket::EncodeL |
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// ----------------------------------------------------------------------------- |
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// |
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EXPORT_C CBufBase* CNATFWUNSAFTcpRelayPacket::EncodeL() const |
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{ |
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CBufBase* relay = EncodeRelayHeaderLC(); |
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relay->InsertL(relay->Size(), *iData); |
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CleanupStack::Pop(relay); |
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SetRelayLength(*relay); |
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return relay; |
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} |
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|
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// ----------------------------------------------------------------------------- |
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// CNATFWUNSAFTcpRelayPacket::EncodeRelayHeaderLC |
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// ----------------------------------------------------------------------------- |
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// |
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CBufBase* CNATFWUNSAFTcpRelayPacket::EncodeRelayHeaderLC() const |
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{ |
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CBufBase* header = CBufFlat::NewL(EFrameSize); |
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CleanupStack::PushL(header); |
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TUint16 relayType = Type(); |
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// Last eight bits of frame type are reserved as zeros |
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relayType <<= KByteSize; |
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TUint16 bigEndianType(0); |
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BigEndian::Put16(reinterpret_cast<TUint8*>(&bigEndianType), relayType); |
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header->InsertL(EFrameTypeOffset, &bigEndianType, sizeof(bigEndianType)); |
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//Value is zero, so it is same also in the big endian representation |
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TUint16 frameLength(0); |
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header->InsertL(EFrameLengthOffset, &frameLength, sizeof(frameLength)); |
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return header; |
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} |
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141 |
|
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// ----------------------------------------------------------------------------- |
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// CNATFWUNSAFTcpRelayPacket::RelayLength |
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// TInt is guaranteed to be at least 32 bits. |
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// ----------------------------------------------------------------------------- |
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// |
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TInt CNATFWUNSAFTcpRelayPacket::RelayLength(const TDesC8& aRelay) |
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{ |
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if (aRelay.Length() < EFrameSize) |
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{ |
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return KErrNotFound; |
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} |
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|
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return BigEndian::Get16(aRelay.Mid(EFrameLengthOffset).Ptr()); |
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} |
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|
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// ----------------------------------------------------------------------------- |
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// CNATFWUNSAFTcpRelayPacket::SetRelayLength |
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// UNSAF Relay length does not include the NATFWUNSAF header |
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// ----------------------------------------------------------------------------- |
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// |
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void CNATFWUNSAFTcpRelayPacket::SetRelayLength(CBufBase& aRelay) |
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{ |
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SetRelayLength(aRelay, aRelay.Size() - EFrameSize); |
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} |
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|
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// ----------------------------------------------------------------------------- |
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// CNATFWUNSAFTcpRelayPacket::SetRelayLength |
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// ----------------------------------------------------------------------------- |
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// |
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void CNATFWUNSAFTcpRelayPacket::SetRelayLength(CBufBase& aRelay, TInt aLength) |
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{ |
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__ASSERT_ALWAYS(aLength >= 0, User::Panic(KNullDesC, KErrUnderflow)); |
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|
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TUint16 bigEndianLength(0); |
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BigEndian::Put16(reinterpret_cast<TUint8*>(&bigEndianLength), |
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static_cast<TUint16>(aLength)); |
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|
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aRelay.Write(EFrameLengthOffset, &bigEndianLength, |
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sizeof(bigEndianLength)); |
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} |
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|
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// ----------------------------------------------------------------------------- |
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// CNATFWUNSAFTcpRelayPacket::CheckLengthL |
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// Check the granularity of attribute's length. |
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// ----------------------------------------------------------------------------- |
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// |
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void CNATFWUNSAFTcpRelayPacket::CheckLengthL(TInt aLength) const |
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{ |
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__ASSERT_ALWAYS((aLength % EGranularity) == 0, User::Leave(KErrCorrupt)); |
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} |
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|
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// ----------------------------------------------------------------------------- |
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// CNATFWUNSAFTcpRelayPacket::Data |
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// ----------------------------------------------------------------------------- |
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// |
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EXPORT_C const TDesC8& CNATFWUNSAFTcpRelayPacket::Data() const |
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{ |
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return *iData; |
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} |
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|
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// ----------------------------------------------------------------------------- |
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// CNATFWUNSAFTcpRelayPacket::Type |
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// ----------------------------------------------------------------------------- |
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// |
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EXPORT_C CNATFWUNSAFTcpRelayPacket::TRelayType |
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CNATFWUNSAFTcpRelayPacket::Type() const |
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{ |
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return iType; |
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} |