datacommsserver/esockserver/ssock/ss_subconnflow.cpp
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Fri, 12 Mar 2010 15:49:41 +0200
branchRCL_3
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permissions -rw-r--r--
Revision: 201008 Kit: 201008
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// Copyright (c) 2004-2009 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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#include "ss_subconnflow.h"
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#include <comms-infras/ss_log.h>
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#include <comms-infras/ss_mcprnodemessages.h>
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#include <comms-infras/ss_protflow.h>
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#include <es_ini.h>
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#include <ss_glob.h>
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#include <ss_protprov.h>
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#include <comms-infras/ss_sapshim.h>
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#include "ss_sapfactshim.h"
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#include <elements/cftransport.h>
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#include <ecom/ecom.h>
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#include <elements/nm_messages_child.h>
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#include <comms-infras/ss_nodemessages_factory.h>
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#ifdef _DEBUG
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// Panic category for "absolutely impossible!" vanilla ASSERT()-type panics from this module
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// (if it could happen through user error then you should give it an explicit, documented, category + code)
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_LIT(KSpecAssert_ESockSSocksbcnfl, "ESockSSocksbcnfl");
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#endif
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using namespace ESock;
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using namespace Messages;
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using namespace CommsFW;
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using namespace Factories;
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//-=====================================================================
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//
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//
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// CSubConnectionFlowFactoryContainer
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//
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//
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//-=====================================================================
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CSubConnectionFlowFactoryContainer::CSubConnectionFlowFactoryContainer()
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:CCommsFactoryContainer((CCommsFactoryContainer::TContaineeType)CSubConnectionFlowFactoryContainer::EId)
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	{
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	LOG_NODE_CREATE(KESockDataFactTag, CSubConnectionFlowFactoryContainer)
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	}
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CSubConnectionFlowFactoryContainer::~CSubConnectionFlowFactoryContainer()
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	{
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	TCFLegacyMessage::DeRegister();
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	LOG_NODE_DESTROY(KESockDataFactTag, CSubConnectionFlowFactoryContainer)
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	}
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CSubConnectionFlowFactoryContainer* CSubConnectionFlowFactoryContainer::NewL()
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/** Create a new instance of a sub-connection factory container
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@exception Leaves in out of memory conditions
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@return Pointer to new instance of a sub-connection factory container
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*/
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	{
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	using namespace CommsFW;
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	LOG( ESockLog::Printf(KESockDataFactTag, _L8("CSubConnectionFlowFactoryContainer:\tNewL()")) );
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	// For the self-dispatching TLegacyConnectionEnumRequest
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	TCFLegacyMessage::RegisterL();
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	CSubConnectionFlowFactoryContainer* provcont = new (ELeave) CSubConnectionFlowFactoryContainer();
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	CleanupStack::PushL(provcont);
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	CTransportFlowShimFactory::NewL(TUid::Uid(CTransportFlowShimFactory::iUid), *provcont);
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	CleanupStack::Pop(provcont);
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	return provcont;
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	}
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void CSubConnectionFlowFactoryContainer::ReceivedL(const TRuntimeCtxId& aSender, const TNodeId& /*aRecipient*/, TSignatureBase& aMessage)
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	{
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	if (aMessage.IsMessage<TCFFactory::TFindOrCreatePeer>())
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		{
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		TCFFactory::TFindOrCreatePeer& msg = message_cast<TCFFactory::TFindOrCreatePeer>(aMessage);
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		CCommsFactoryBase* factory = static_cast<CCommsFactoryBase*>(FindOrCreateFactoryL(msg.iUid));
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        ACommsFactoryNodeId* flow = factory->FindOrCreateObjectL(*(msg.iQuery));
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        // Send "DataClientJoined"
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   #ifndef __GCCXML__
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   	    RClientInterface::OpenPostMessageClose(Id(), aSender,
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   	    	TCFFactory::TPeerFoundOrCreated(flow? flow->Id() : TNodeId::NullId(), 0).CRef());
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   #endif
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        aMessage.ClearMessageId();
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		}
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	else
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		{
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		NM_LOG_START_BLOCK(KESockMetaConnectionTag, _L8("CSubConnectionFlowFactoryContainer:ReceivedL"));
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		NM_LOG((KESockMetaConnectionTag, _L8("ERROR: KErrNotSupported [this=0x%08x] "), this));
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		NM_LOG_MESSAGE(KESockMetaConnectionTag, aMessage);
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        NM_LOG_END_BLOCK(KESockMetaConnectionTag, _L8("CSubConnectionFlowFactoryContainer:ReceivedL"));
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		__ASSERT_DEBUG(EFalse, User::Panic(KSpecAssert_ESockSSocksbcnfl, 1)); //For debug configurations
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		User::Leave(KErrNotSupported); //For release configurations
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		}
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	}
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//-=====================================================================
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//
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//
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// CSubConnectionFlowFactoryBase
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//
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//
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//-=====================================================================
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EXPORT_C CSubConnectionFlowFactoryBase::CSubConnectionFlowFactoryBase(TUid aFactoryId, CSubConnectionFlowFactoryContainer& aParentContainer)
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/** Sub-connection flow factory constructor
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@param aFactoryId Unique Integer Identifier of the sub-connection provider factory
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@param aParentContainer Container to add the factory to */
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	: CCommsFactoryBase(aFactoryId, aParentContainer)
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	{
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	}
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EXPORT_C ACommsFactoryNodeId* CSubConnectionFlowFactoryBase::DoCreateObjectL(TFactoryQueryBase& aQuery)
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	{
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	const TDefaultFlowFactoryQuery& flowQuery = static_cast<const TDefaultFlowFactoryQuery&>(aQuery);
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	TDefaultProtocolIntfFactoryQuery pintfQuery (flowQuery.iCprId);
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	CProtocolIntfBase* proto = SockManGlobals::Get()->iProtocolIntfFactories->FindOrCreateProtocolIntfL(Uid(), pintfQuery);
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	if (NULL == proto)
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    	{
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    	LOG( ESockLog::Printf(KESockDataFactTag, _L8("CSubConnectionFlowFactoryBase %08x:\tCreateFlowL(protocolId '%08x') Cannot find protocol interface, bailing out"), this, Uid()) );
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    	User::Leave(KErrNotFound);
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    	}
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    // A null CPR indicates that there is no real control side at all, meaning it's a legacy protocol and the FlowRequest is puppeteering this
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    // creation. In such a case we must be creating a CTransportFlowShim, which understands that a null SCPR is to be ignored
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    __ASSERT_DEBUG(!flowQuery.iCprId.IsNull() || proto->Factory().Uid().iUid == CTransportFlowShimFactory::iUid, User::Panic(KSpecAssert_ESockSSocksbcnfl, 2));
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    ACommsFactoryNodeId* flow = DoCreateFlowL(proto, aQuery);
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	LOG( ESockLog::Printf(KESockDataFactTag, _L8("CSubConnectionFlowFactoryBase %08x:\tCreateFlowL(protocolId '%08x'): flow %08x"), this, Uid(), &flow) );
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	return flow;
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	}
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EXPORT_C TServerProtocolDesc* CSubConnectionFlowFactoryBase::CreateFlowDescriptionL(TInt aProtocol)
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	{
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	// Defer to derived implementation
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	return DoCreateFlowDescriptionL(aProtocol);
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	}
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EXPORT_C TServerProtocolDesc* CSubConnectionFlowFactoryBase::DoCreateFlowDescriptionL(TInt /*aProtocol*/)
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	{
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	__ASSERT_DEBUG(0, Panic(EMisconfigured));
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	User::Leave(KErrNotSupported);
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	return NULL;
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	}
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EXPORT_C CSubConnectionFlowFactoryBase::~CSubConnectionFlowFactoryBase()
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	{
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	}
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//-=====================================================================
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// Default PINT
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//-=====================================================================
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class CDefaultProtocolIntf : public CProtocolIntfBase
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/**
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This is the internal, dummy, default CProtocolIntfBase implementation
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that will by default accompany any flow unless the flow factory
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decides to overload its CreateProtocolIntfFactoryL method.
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@internalTechnology
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*/
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	{
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public:
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	CDefaultProtocolIntf(CProtocolIntfFactoryBase& aFactory,const Messages::TNodeId& aCprId);
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	// from CProtocolIntfBase
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	virtual void DoFlowCreated(ESock::CSubConnectionFlowBase& aFlow);
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	virtual void DoFlowBeingDeleted(ESock::CSubConnectionFlowBase& aFlow);
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	};
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class CDefaultProtocolIntfFactory : public CProtocolIntfFactoryBase
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/**
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This is the internal, dummy, default CProtocolIntfBase implementation
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that will by default accompany any flow unless the flow factory
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decides to overload its CreateProtocolIntfFactoryL method.
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@internalTechnology
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*/
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	{
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public:
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	virtual CProtocolIntfBase* DoCreateProtocolIntfL(TFactoryQueryBase& aQuery);
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	static CDefaultProtocolIntfFactory* NewL(TUid aFactoryId, ESock::CProtocolIntfFactoryContainer& aParentContainer);
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protected:
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	CDefaultProtocolIntfFactory(TUid aFactoryId, ESock::CProtocolIntfFactoryContainer& aParentContainer);
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	};
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CDefaultProtocolIntfFactory* CDefaultProtocolIntfFactory::NewL(TUid aFactoryId, ESock::CProtocolIntfFactoryContainer& aParentContainer)
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	{
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    CDefaultProtocolIntfFactory* factory = new (ELeave) CDefaultProtocolIntfFactory(aFactoryId, aParentContainer);
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    CleanupStack::PushL(factory);
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    factory->ConstructL();
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    CleanupStack::Pop(factory);
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    return factory;
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	}
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CDefaultProtocolIntf::CDefaultProtocolIntf(CProtocolIntfFactoryBase& aFactory,const Messages::TNodeId& aCprId)
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:CProtocolIntfBase(aFactory,aCprId)
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    {
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    }
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void CDefaultProtocolIntf::DoFlowCreated(ESock::CSubConnectionFlowBase& /*aFlow*/)
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    {
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    }
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void CDefaultProtocolIntf::DoFlowBeingDeleted(ESock::CSubConnectionFlowBase& /*aFlow*/)
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    {
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    }
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CProtocolIntfBase* CDefaultProtocolIntfFactory::DoCreateProtocolIntfL(TFactoryQueryBase& aQuery)
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    {
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    const TDefaultProtocolIntfFactoryQuery& query = static_cast<const TDefaultProtocolIntfFactoryQuery&>(aQuery);
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    return new (ELeave) CDefaultProtocolIntf(*this,query.iCprId);
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    }
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CDefaultProtocolIntfFactory::CDefaultProtocolIntfFactory(TUid aFactoryId, CProtocolIntfFactoryContainer& aParentContainer)
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:	CProtocolIntfFactoryBase(aFactoryId, aParentContainer)
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    {
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	}
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EXPORT_C CProtocolIntfFactoryBase* CSubConnectionFlowFactoryBase::CreateProtocolIntfFactoryL(CProtocolIntfFactoryContainer& aParentContainer)
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    {
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    return CDefaultProtocolIntfFactory::NewL (Uid(), aParentContainer);
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    }
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//-=====================================================================
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//
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//
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// CSubConnectionFlowBase
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//
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//
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//-=====================================================================
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EXPORT_C CSubConnectionFlowBase::CSubConnectionFlowBase(CSubConnectionFlowFactoryBase& aFactory, const TNodeId& aSubConnId,
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                                                        CProtocolIntfBase* aProtocolIntf)
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:	ACommsFactoryNodeId(aFactory),
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	iProtocolIntf(aProtocolIntf)
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	{
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	__ASSERT_DEBUG(iProtocolIntf, User::Panic(KSpecAssert_ESockSSocksbcnfl, 3));
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    iSubConnectionProvider.Open(aSubConnId);
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	// Signal the ProtocolIntf that a Flow has been created.
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	iProtocolIntf->FlowCreated(*this);
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	}
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EXPORT_C CSubConnectionFlowBase::~CSubConnectionFlowBase()
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	{
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	if(iLastRequestOriginator.IsOpen())
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		{
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		iLastRequestOriginator.ReplyTo(Id(), TEChild::TLeft().CRef());
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		}
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    iProtocolIntf->FlowBeingDeleted(*this);
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	LOG( ESockLog::Printf(KESockDataFactTag, _L8("CSubConnectionFlowBase %08x:\t~CSubConnectionFlowBase"), this) );
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	}
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EXPORT_C void CSubConnectionFlowBase::ReceivedL(const TRuntimeCtxId& aSender, const TNodeId& /*aRecipient*/, TSignatureBase& aMessage)
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    {
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    if (iLastRequestOriginator.Open(iSubConnectionProvider, aSender) != KErrNone)
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        {
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        if(!iSubConnectionProvider.IsOpen())
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	        {
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	    	// Legacy flows legitimately lack a sub-connection provider
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	        return;
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	        }
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		else if(aMessage.IsMessage<TEBase::TError>())
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			{
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			//[TODO EC120] RZ: WHoa! What is this?! Flow receives a TError and as a response sends TError
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			//(leaves from ::ReceivedL are handled by sending TError).
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			__ASSERT_DEBUG(static_cast<TEBase::TError&>(aMessage).iValue != KErrNone, User::Panic(KSpecAssert_ESockSSocksbcnfl, 4));
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			User::Leave(static_cast<TEBase::TError&>(aMessage).iValue);	// don't mutate the error into KErrArgument
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			}
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		User::Leave(KErrArgument);
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        }
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    }
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EXPORT_C void CSubConnectionFlowBase::SubConnectionGoingDown()
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	{
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	LOG( ESockLog::Printf(KESockDataFactTag, _L8("CSubConnectionFlowBase %08x:\tSubConnectionGoingDown"), this) );
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	iSubConnectionProvider.Close();
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	DeleteThisFlow();
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	}
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EXPORT_C NetInterfaces::TInterfaceControl* CSubConnectionFlowBase::FetchNodeInterfaceControlL(TInt aInterfaceId)
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    {
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    return DoFetchInterfaceControlL(aInterfaceId);
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    }
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EXPORT_C MFlowBinderControl* CSubConnectionFlowBase::GetBinderControlL()
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	{
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	return DoGetBinderControlL();
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	}
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EXPORT_C void CSubConnectionFlowBase::DeleteThisFlow()
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/**
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Called from Flows to delete themselves, usually as a result of a received Destroy() message.
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*/
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	{
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	DeleteMeNow();
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	// "this" no longer valid after this point.
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	}
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EXPORT_C CProtocolIntfBase* CSubConnectionFlowBase::ProtocolIntf() const
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/**
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Return the ProtocolIntf associated with this Flow
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*/
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	{
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	return iProtocolIntf;
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	}
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