networkcontrol/iptransportlayer/src/ipdeftscpr.cpp
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Tue, 26 Jan 2010 15:23:49 +0200
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// Copyright (c) 2006-2009 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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// IP SubConnection Provider implementation
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// 
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//
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/**
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 @file
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 @internalComponent
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*/
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#include <comms-infras/corescpractivities.h>
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#include <comms-infras/ss_corepractivities.h>
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#include "ipdeftscpr.h"
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#include "IPMessages.h"
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#include <comms-infras/ss_log.h>
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#include "IPCpr.h"
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#include <comms-infras/ss_msgintercept.h>
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#ifdef SYMBIAN_TRACE_ENABLE
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	#define KIPSCprTag KESockSubConnectionTag
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	//_LIT8(KIPSCprSubTag, "ipqosdeftscpr");
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#endif // SYMBIAN_TRACE_ENABLE
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using namespace Messages;
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using namespace MeshMachine;
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using namespace ESock;
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using namespace IPDeftBaseSCprActivities;
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using namespace PRActivities;
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using namespace CoreNetStates;
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//We reserve space for two preallocated activities that may start concurrently on the default SCPR
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//node: destroy and data client stop.
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static const TUint KDefaultMaxPreallocatedActivityCount = 2;
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static const TUint KMaxPreallocatedActivitySize = sizeof(MeshMachine::CNodeRetryParallelActivity) + sizeof(MeshMachine::APreallocatedOriginators<4>);
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static const TUint KIPDefaultSCPRPreallocatedActivityBufferSize = KDefaultMaxPreallocatedActivityCount * KMaxPreallocatedActivitySize;
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//-=========================================================
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//
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// States
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//
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//-=========================================================
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namespace IPDeftSCprStates
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{
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DEFINE_SMELEMENT(TPolicyChecking, NetStateMachine::MStateTransition, IPBaseSCprStates::TContext)
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void TPolicyChecking::DoL()
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	{
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	IPBaseSCprStates::TStoreAddressUpdate storeAddressUpdate(iContext);
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	storeAddressUpdate.DoL();
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	TCFIPMessage::TDataClientRouted& addressUpdateMsg = message_cast<TCFIPMessage::TDataClientRouted>(iContext.iMessage);
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	// check for src and dst address presence
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	if( addressUpdateMsg.iAddrUpdate.iSrcSockAddr.Family() != KAFUnspec &&
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		addressUpdateMsg.iAddrUpdate.iDestSockAddr.Family() != KAFUnspec )
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		{
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		RNodeInterface* ctrlProvider = iContext.Node().ControlProvider();
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		User::LeaveIfError(ctrlProvider? KErrNone : KErrCorrupt);
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	    RIPDataClientNodeInterface* client = static_cast<RIPDataClientNodeInterface*>(iContext.iPeer);
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		ctrlProvider->PostMessage(
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			TNodeCtxId(iContext.ActivityId(), iContext.NodeId()),
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			TCFIPMessage::TPolicyParams(
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				addressUpdateMsg.iAddrUpdate,
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				iContext.NodeId(),
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				address_cast<TNodeId>(iContext.iSender),
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				client->iAppSid
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				).CRef()
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			);
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		}
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	}
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}//namespace 
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//-=========================================================
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//
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// Activities
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//
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//-=========================================================
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namespace IPDeftSCprAddressUpdate
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{
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DECLARE_DEFINE_NODEACTIVITY(ECFActivityAddressUpdate, IPDeftSCprAddressUpdate, TCFIPMessage::TDataClientRouted)
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	NODEACTIVITY_ENTRY(KNoTag, IPDeftSCprStates::TPolicyChecking, IPBaseSCprStates::TAwaitingAddressUpdate, MeshMachine::TNoTag)
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NODEACTIVITY_END()
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}
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DEFINE_SMELEMENT(CCommsIPBinderActivity::TFetchClientUids, NetStateMachine::MStateTransition, TContext)
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void CCommsIPBinderActivity::TFetchClientUids::DoL()
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	{
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	MPlatsecApiExt* platsec(NULL);
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   	TRAP_IGNORE(platsec = reinterpret_cast<MPlatsecApiExt*>(address_cast<TNodeId>(iContext.iSender).Node().FetchNodeInterfaceL(MPlatsecApiExt::KInterfaceId)));
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   	if (platsec)
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   		{
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		TSecureId secureId = 0;
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   		if(platsec->SecureId(secureId) != KErrNone)
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   			{
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   			return;
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   			}
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		CCommsIPBinderActivity* intf = reinterpret_cast<CCommsIPBinderActivity*>(iContext.iNodeActivity->FetchExtInterface(CCommsIPBinderActivity::KInterfaceId));
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		if(intf)
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			{
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			intf->SetUid(TUid::Uid(secureId.iId));
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			}
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   		}
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	}
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DEFINE_SMELEMENT(CCommsIPBinderActivity::TUpdateClientUids, NetStateMachine::MStateTransition, TContext)
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void CCommsIPBinderActivity::TUpdateClientUids::DoL()
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	{
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	/* Data client joined is recieved from the factory, which isn't the peer. Therefore we must look up
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	 * the client using it's comms id which we can get from the dcjoined message
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	 */
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    RIPDataClientNodeInterface* client = static_cast<RIPDataClientNodeInterface*>(iContext.iPeer);
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    if (!client)
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        {
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        return;
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        }
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	CCommsIPBinderActivity* intf = reinterpret_cast<CCommsIPBinderActivity*>(iContext.iNodeActivity->FetchExtInterface(CCommsIPBinderActivity::KInterfaceId));
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	if(intf)
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		{
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	    client->iAppSid = intf->GetUid();
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		}
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	}
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namespace IPDeftSCprBinderRequestActivity
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{
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DECLARE_DEFINE_CUSTOM_NODEACTIVITY(ECFActivityBinderRequest, IPDeftSCprBinderRequest, TCFServiceProvider::TCommsBinderRequest, CCommsIPBinderActivity::NewL)
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	FIRST_NODEACTIVITY_ENTRY(CoreNetStates::TAwaitingBinderRequest, MeshMachine::TNoTag )
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	THROUGH_NODEACTIVITY_ENTRY(KNoTag, CCommsIPBinderActivity::TFetchClientUids, IPDeftBaseSCprBinderRequestActivity::TNoTagOrUseExistingOrPermissionDenied)
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	NODEACTIVITY_ENTRY(KNoTag, PRStates::TCreateDataClient, CoreNetStates::TAwaitingDataClientJoin, MeshMachine::TNoTag)
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	// Below this point we need to modify the error handling approach. If we're getting a TError on TBinderResponse,
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	// this means the client requesting the binder couldn't bind to it. As far as the client is concerned, this
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	// activity is finished (it has flagged an error). The standard error handling will result in erroring
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	// the originator. In this case we shouoldn't error the originator, instead, wrap up quietly.
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	THROUGH_NODEACTIVITY_ENTRY(KNoTag, CCommsIPBinderActivity::TProcessDataClientCreationAndUpdateClientUids, MeshMachine::TTag<CoreStates::KUseExisting>)
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	NODEACTIVITY_ENTRY(CoreStates::KUseExisting, CCommsBinderActivity::TSendBinderResponse, CCommsBinderActivity::TAwaitingBindToComplete, MeshMachine::TNoTagOrErrorTag)
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	LAST_NODEACTIVITY_ENTRY(KNoTag, MeshMachine::TDoNothing)
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	LAST_NODEACTIVITY_ENTRY(KErrorTag, MeshMachine::TClearError)
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	LAST_NODEACTIVITY_ENTRY(IPDeftBaseSCprBinderRequestActivity::KPermissionDenied, MeshMachine::TRaiseAndClearActivityError)
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NODEACTIVITY_END()
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}
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namespace IPDeftSCprActivities
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{
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DECLARE_DEFINE_ACTIVITY_MAP(activityMap)
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	ACTIVITY_MAP_ENTRY(IPDeftSCprAddressUpdate, IPDeftSCprAddressUpdate)
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	ACTIVITY_MAP_ENTRY(IPDeftSCprBinderRequestActivity, IPDeftSCprBinderRequest)
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ACTIVITY_MAP_END_BASE(IPDeftBaseSCprActivities, ipdeftbasescprActivityMap)
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}
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//-=========================================================
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//
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// CIpDefaultSubConnectionProvider methods
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//
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//-=========================================================
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CIpDefaultSubConnectionProvider::~CIpDefaultSubConnectionProvider()
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    {
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    LOG_NODE_DESTROY(KIPSCprTag, CIpDefaultSubConnectionProvider);
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    }
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CIpDefaultSubConnectionProvider::CIpDefaultSubConnectionProvider(ESock::CSubConnectionProviderFactoryBase& aFactory)
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	: CIpDefaultBaseSubConnectionProvider(aFactory, IPDeftSCprActivities::activityMap::Self())
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    {
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    LOG_NODE_CREATE(KIPSCprTag, CIpDefaultSubConnectionProvider);
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    }
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CIpDefaultSubConnectionProvider* CIpDefaultSubConnectionProvider::NewL(ESock::CSubConnectionProviderFactoryBase& aFactory)
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    {
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    CIpDefaultSubConnectionProvider* provider = new (ELeave) CIpDefaultSubConnectionProvider(aFactory);
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    CleanupStack::PushL(provider);
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    provider->ConstructL(KIPDefaultSCPRPreallocatedActivityBufferSize);
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    CleanupStack::Pop(provider);
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    return provider;
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    }
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void CIpDefaultSubConnectionProvider::ReceivedL(const TRuntimeCtxId& aSender, const TNodeId& aRecipient, TSignatureBase& aMessage)
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	{
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	ESOCK_DEBUG_MESSAGE_INTERCEPT(aSender, aMessage, aRecipient);
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   	TNodeContext<CIpDefaultSubConnectionProvider> ctx(*this, aMessage, aSender, aRecipient);
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	CCoreSubConnectionProvider::ReceivedL(aSender, aRecipient, aMessage);
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	User::LeaveIfError(ctx.iReturn);
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	}
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MeshMachine::CNodeActivityBase* CCommsIPBinderActivity::NewL(const MeshMachine::TNodeActivity& aActivitySig, MeshMachine::AMMNodeBase& aNode)
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    {
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	TUint c = GetNextActivityCountL(aActivitySig,aNode);
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    return new(ELeave)CCommsIPBinderActivity(aActivitySig, aNode, c);
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    }
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CCommsIPBinderActivity::CCommsIPBinderActivity(const MeshMachine::TNodeActivity& aActivitySig, MeshMachine::AMMNodeBase& aNode, TUint aNextActivityCount)
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:	CCommsBinderActivity(aActivitySig, aNode, aNextActivityCount)
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	{
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	iAppSid = TUid::Null();
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	}