// Copyright (c) 2006-2009 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:

// IPProto Connection Provider implementation

// 

//

/**

 @file

 @internalComponent

*/

#define SYMBIAN_NETWORKING_UPS

#include <comms-infras/corecprstates.h>

#include <comms-infras/corecpractivities.h>

#include <comms-infras/ss_log.h>

#include <comms-infras/ss_legacyinterfaces.h>

#include <comms-infras/ss_datamon_apiext.h>

#include <es_prot.h> // ESocketTimerPriority/KConnProfile(None/Long/Medium)

#include <e32def.h>

#include <es_prot_internal.h>

#include "IPProtoCprStates.h"

#include "IPProtoCPR.h"

#include "IPProtoMCpr.h"

#include "IPProtoMessages.h"

#include "linkcprextensionapi.h"

#include <comms-infras/ss_nodemessages_factory.h>

#include <comms-infras/ss_msgintercept.h>

#include <comms-infras/ss_nodemessages_internal.h>

#ifdef SYMBIAN_ADAPTIVE_TCP_RECEIVE_WINDOW

#include <comms-infras/ss_nodemessages_subconn.h>

#endif //SYMBIAN_ADAPTIVE_TCP_RECEIVE_WINDOW

#ifdef _DEBUG

   #include <networking/idletimertest.h>

#endif

using namespace Messages;

using namespace MeshMachine;

using namespace IpProtoCpr;

using namespace ESock;

using namespace NetStateMachine;

using namespace PRActivities;

//We reserve space for two preallocated activities that may start concurrently on the CPR

//node: destroy and data client stop.

static const TUint KDefaultMaxPreallocatedActivityCount = 2;

static const TUint KMaxPreallocatedActivitySize = sizeof(MeshMachine::CNodeRetryParallelActivity) + sizeof(MeshMachine::APreallocatedOriginators<4>);

static const TUint KIPProtoCPRPreallocatedActivityBufferSize = KDefaultMaxPreallocatedActivityCount * KMaxPreallocatedActivitySize;

//-=========================================================

//

// Activities

//

//-=========================================================

namespace IPProtoCprProvisionActivity

{

DECLARE_DEFINE_NODEACTIVITY(ECFActivityStoreProvision, IPProtoCprProvision, TCFDataClient::TProvisionConfig)

	FIRST_NODEACTIVITY_ENTRY(CoreNetStates::TAwaitingProvision, MeshMachine::TNoTag)

	THROUGH_NODEACTIVITY_ENTRY(KNoTag, IpProtoCpr::TProvisionActivation, MeshMachine::TNoTagOrErrorTag)

	LAST_NODEACTIVITY_ENTRY(KNoTag, IpProtoCpr::TStoreProvision)

	LAST_NODEACTIVITY_ENTRY(KErrorTag, IpProtoCpr::THandleProvisionError)

NODEACTIVITY_END()

}

namespace IPProtoCprConnectionDownActivity

{

// In the event that a StopConnection has been issued this activity will not receive

// a ConnectionDown message. It will be received instead by the running StopConnectionActivity.

//

// In the event that the Idle Timer has expired, this node will originate a StopConnection

// to itself, the StopConnectionActivity will post a ConnectionDown to the origator (this

// node) and the StopConnectionActivity will go idle. The ConnectionDown message will then

// be received by this activity.

DECLARE_DEFINE_NODEACTIVITY(ECFActivityGoneDown, IPProtoCprConnectionDown, TCFServiceProvider::TStopped)

	FIRST_NODEACTIVITY_ENTRY(CoreNetStates::TAwaitingStopped, MeshMachine::TNoTag)

	LAST_NODEACTIVITY_ENTRY(KNoTag, PRStates::TSendGoneDown)

NODEACTIVITY_END()

}

namespace IPProtoCprBinderRequestActivity

{

//The reason IPProtoCPR overrides this activity is that IPProto layer doesn't

//implement non-default SCPRs and although higher levels will ask for them

//(in QoS scenarios) IPProto will assume the higher levels will do fine

//with default SCPRs instead. The current QoS solution involves GuQoS and

//multiplexining channels at IPProto layer.

DECLARE_DEFINE_CUSTOM_NODEACTIVITY(ECFActivityBinderRequest, IPProtoCprBinderRequest, TCFServiceProvider::TCommsBinderRequest, PRActivities::CCommsBinderActivity::NewL)

//	FIRST_NODEACTIVITY_ENTRY(CoreNetStates::TAwaitingBinderRequest, CCommsBinderActivity::TNoTagOrWaitForIncomingOrUseExistingBlockedByBinderRequest)

	FIRST_NODEACTIVITY_ENTRY(CoreNetStates::TAwaitingBinderRequest, CCommsBinderActivity::TNoTagOrWaitForIncomingOrUseExistingDefaultBlockedByBinderRequest)

	NODEACTIVITY_ENTRY(KNoTag, PRStates::TCreateDataClient, CoreNetStates::TAwaitingDataClientJoin, MeshMachine::TNoTag)

	THROUGH_NODEACTIVITY_ENTRY(KNoTag, CCommsBinderActivity::TProcessDataClientCreation, TTag<CoreStates::KUseExisting>)

	NODEACTIVITY_ENTRY(CoreStates::KUseExisting, CCommsBinderActivity::TSendBinderResponse, CCommsBinderActivity::TAwaitingBindToComplete, MeshMachine::TNoTagOrErrorTag)

	LAST_NODEACTIVITY_ENTRY(KNoTag, MeshMachine::TDoNothing)

	LAST_NODEACTIVITY_ENTRY(KErrorTag, MeshMachine::TClearError)

	LAST_NODEACTIVITY_ENTRY(CoreNetStates::KWaitForIncoming, MeshMachine::TRaiseError<KErrNotSupported>)

NODEACTIVITY_END()

}

namespace IPProtoCprDataMonitoringActivity

{

DECLARE_DEFINE_NODEACTIVITY(ECFActivityDataMonitoring, IPProtoCprDataMonitoring, TCFDataMonitoringNotification::TDataMonitoringNotification)

	FIRST_NODEACTIVITY_ENTRY(IpProtoCpr::TAwaitingDataMonitoringNotification, MeshMachine::TNoTag)

	LAST_NODEACTIVITY_ENTRY(KNoTag, IpProtoCpr::TProcessDataMonitoringNotification)

NODEACTIVITY_END()

}

namespace IPProtoCprOpenCloseRouteActivity

{

DECLARE_DEFINE_NODEACTIVITY(ECFActivityOpenCloseRoute, IPProtoCprOpenCloseRoute, TCFIPProtoMessage::TOpenCloseRoute)

	FIRST_NODEACTIVITY_ENTRY(IpProtoCpr::TAwaitingOpenCloseRoute, MeshMachine::TNoTag)

	LAST_NODEACTIVITY_ENTRY(KNoTag, IpProtoCpr::TDoOpenCloseRoute)

NODEACTIVITY_END()

}

namespace IPProtoCprForwardStateChangeActivity

{

DECLARE_DEFINE_NODEACTIVITY(ECFActivityForwardStateChange, IPProtoCprForwardStateChange, TCFMessage::TStateChange)

	NODEACTIVITY_ENTRY(KNoTag, IpProtoCpr::TStoreAndFilterDeprecatedAndForwardStateChange, MeshMachine::TAwaitingMessageState<TCFMessage::TStateChange>, MeshMachine::TNoTag)

NODEACTIVITY_END()

}

namespace IPProtoCprLinkDown

{

	DECLARE_DEFINE_NODEACTIVITY(ECFActivityGoneDown, IPProtoCprLinkDownOnMesg, TCFControlClient::TGoneDown)

	// Our Service Provider has gone down unexpectedly (we haven't issued a TStop)

	NODEACTIVITY_ENTRY(KNoTag, MeshMachine::TDoNothing, TAwaitingGoneDown, MeshMachine::TNoTag)

	NODEACTIVITY_END()

}

namespace IPProtoCprStartActivity

{

typedef MeshMachine::TAcceptErrorState<CoreNetStates::TAwaitingDataClientStarted> TAwaitingDataClientStartedOrError;

DECLARE_DEFINE_CUSTOM_NODEACTIVITY(ECFActivityStart, IPProtoCprStart, TCFServiceProvider::TStart, PRActivities::CStartActivity::NewL)

    FIRST_NODEACTIVITY_ENTRY(IpProtoCpr::TAwaitingStart, CoreNetStates::TNoTagOrBearerPresentBlockedByStop)

	NODEACTIVITY_ENTRY(CoreNetStates::KBearerPresent, CoreNetStates::TBindSelfToPresentBearer, CoreNetStates::TAwaitingBindToComplete, TTag<CoreNetStates::KBearerPresent>)

	NODEACTIVITY_ENTRY(KNoTag, CoreNetStates::TSendNoBearer, MeshMachine::TAwaitingMessageState<TCFControlProvider::TBearer>, TErrorTagOr<TTag<CoreNetStates::KBearerPresent> >)

	//Start the service provider, use the default cancellation.

	//Forward TCancel to the service provider, wait for TStarted or TError (via the Error Activity)

	//When TStarted arrives after TCancel the activity will move to the nearest KErrorTag

	NODEACTIVITY_ENTRY(CoreNetStates::KBearerPresent, CoreNetStates::TStartServiceProviderRetry, CoreNetStates::TAwaitingStarted, MeshMachine::TNoTagOrErrorTag)

	LAST_NODEACTIVITY_ENTRY(KErrorTag, IpProtoCpr::TCleanupStart)

	//Start data clients, use the default cancellation.

	//Forward TCancel to the self, wait for TCFDataClient::TStarted or TError (via the Error Activity)

	//When TCFDataClient::TStarted arrives after TCancel the activity will move to the nearest KErrorTag

	NODEACTIVITY_ENTRY(KNoTag, TLinkUpAndTStartSelf, TAwaitingDataClientStartedOrError, MeshMachine::TNoTagOrErrorTag)

	LAST_NODEACTIVITY_ENTRY(KNoTag, IpProtoCpr::TSendStarted)

	//IPProto layer must stop the lower layer on failure to start as it would detach the lower layer from the idle timer impl.

	NODEACTIVITY_ENTRY(KErrorTag, IpProtoCpr::TSendStopToSelf, CoreNetStates::TAwaitingStopped, MeshMachine::TErrorTag)

	LAST_NODEACTIVITY_ENTRY(KErrorTag, IpProtoCpr::TCleanupStart)

NODEACTIVITY_END()

}

namespace IPProtoCprClientLeaveActivity

{ //This activity will wait for ECFActivityBinderRequest to complete

using namespace  CprClientLeaveActivity;

DECLARE_DEFINE_RESERVED_CUSTOM_NODEACTIVITY(ECFActivityClientLeave, IPProtoCprClientLeave, TCFServiceProvider::TLeaveRequest, CClientLeaveActivity::New) //May be waiting for both messages

	FIRST_NODEACTIVITY_ENTRY(MeshMachine::TAwaitingMessageState<TCFServiceProvider::TLeaveRequest>, MeshMachine::TNoTag)

	THROUGH_NODEACTIVITY_ENTRY(KNoTag, CprClientLeaveActivity::CClientLeaveActivity::TRemoveClientAndDestroyOrphanedDataClients, CClientLeaveActivity::TNoTagOrSendPriorityToCtrlProvider)

	NODEACTIVITY_ENTRY(CprStates::KSendPriorityToCtrlProvider, CClientLeaveActivity::TUpdatePriorityForControlProvider, CoreStates::TAwaitingJoinComplete, CClientLeaveActivity::TNoTagOrSendPriorityToServProvider)

	NODEACTIVITY_ENTRY(CprStates::KSendPriorityToServProvider, CClientLeaveActivity::TUpdatePriorityForServiceProviders, CoreStates::TAwaitingJoinComplete, MeshMachine::TNoTag)

 	THROUGH_NODEACTIVITY_ENTRY(KNoTag, CprClientLeaveActivity::CClientLeaveActivity::TSendLeaveCompleteAndSendDataClientIdleIfNeeded, MeshMachine::TNoTag)

 	LAST_NODEACTIVITY_ENTRY(KNoTag, IpProtoCpr::TCheckIfLastControlClientLeaving)

NODEACTIVITY_END()

}

DECLARE_DEFINE_NODEACTIVITY(ECFIpProtoCprActivityDataClientStatusChange, IPProtoCprDataClientStatusChangeActivity, TCFControlProvider::TDataClientStatusChange)

	NODEACTIVITY_ENTRY(KNoTag, IpProtoCpr::TProcessDataClientStatusChange, CoreNetStates::TAwaitingDataClientStatusChange, MeshMachine::TNoTag)

NODEACTIVITY_END()

#ifdef SYMBIAN_ADAPTIVE_TCP_RECEIVE_WINDOW

namespace IPProtoCprNotificationActivity

{

DECLARE_DEFINE_NODEACTIVITY(ECFActivityNotification, IPProtoCprNotification, TCFSubConnControlClient::TPlaneNotification)

	NODEACTIVITY_ENTRY(KNoTag, CoreNetStates::TPassPlaneEventToControlClients, CoreNetStates::TAwaitingConEvent, MeshMachine::TNoTag)

NODEACTIVITY_END()

}

#endif // SYMBIAN_ADAPTIVE_TCP_RECEIVE_WINDOW

namespace IPProtoCprIoctlActivity

{

DECLARE_DEFINE_CUSTOM_NODEACTIVITY(ECFActivityIoctl, IPProtoCprIoctl, TNodeSignal::TNullMessageId, MeshMachine::CNodeParallelMessageStoreActivityBase::NewL)

    FIRST_NODEACTIVITY_ENTRY(IpProtoCpr::TAwaitingIoctlMessage, MeshMachine::TNoTag)

    NODEACTIVITY_ENTRY(KNoTag, IpProtoCpr::TForwardToDefaultDataClient, CoreNetStates::TAwaitingRMessage2Processed, MeshMachine::TNoTag)

    LAST_NODEACTIVITY_ENTRY(KNoTag, CoreStates::TPostToOriginators)

NODEACTIVITY_END()

}

namespace IPProtoCprStopActivity

{

DECLARE_DEFINE_CUSTOM_NODEACTIVITY(ECFActivityStop, IPProtoCprStop, TCFServiceProvider::TStop, MeshMachine::CNodeRetryActivity::NewL)

    FIRST_NODEACTIVITY_ENTRY(IpProtoCpr::TAwaitingStop, CoreNetStates::TActiveOrNoTagBlockedByBindTo)

	THROUGH_NODEACTIVITY_ENTRY(KActiveTag, CoreNetStates::TCancelDataClientStart, MeshMachine::TNoTag)

	NODEACTIVITY_ENTRY(KNoTag, CoreNetStates::TStopSelf, CoreNetStates::TAwaitingDataClientStopped, CoreNetStates::TNoTagOrNoBearer)

	NODEACTIVITY_ENTRY(KNoTag, CoreNetStates::TSendStop, CoreNetStates::TAwaitingStopped, MeshMachine::TNoTag)

	NODEACTIVITY_ENTRY(KNoTag, CoreNetStates::TSendClientLeavingRequestToServiceProvider, MeshMachine::TAwaitingLeaveComplete, TTag<CoreNetStates::KNoBearer>)	

	THROUGH_NODEACTIVITY_ENTRY(CoreNetStates::KNoBearer, IpProtoCpr::TSendStoppedAndGoneDown, MeshMachine::TNoTag)

	//Ensure that we reset the iLinkUp flag, otherwise a Start activity blocked against this Stop activity will

	//cause an assertion failure as iLinkUp will be set twice.

	LAST_NODEACTIVITY_ENTRY(KNoTag, IpProtoCpr::TLinkDown)

NODEACTIVITY_END()

}

namespace IPProtoCprActivities

{

DECLARE_DEFINE_ACTIVITY_MAP(activityMap)

	ACTIVITY_MAP_ENTRY(IPProtoCprForwardStateChangeActivity, IPProtoCprForwardStateChange)

	ACTIVITY_MAP_ENTRY(IPProtoCprLinkDown, IPProtoCprLinkDownOnMesg) 

	ACTIVITY_MAP_ENTRY(IPProtoCprProvisionActivity, IPProtoCprProvision)

	ACTIVITY_MAP_ENTRY(IPProtoCprBinderRequestActivity, IPProtoCprBinderRequest)

	ACTIVITY_MAP_ENTRY(IPProtoCprDataMonitoringActivity, IPProtoCprDataMonitoring)

	ACTIVITY_MAP_ENTRY(IPProtoCprConnectionDownActivity, IPProtoCprConnectionDown)

	ACTIVITY_MAP_ENTRY(IPProtoCprOpenCloseRouteActivity, IPProtoCprOpenCloseRoute)

	ACTIVITY_MAP_ENTRY(IPProtoCprStartActivity, IPProtoCprStart)

	ACTIVITY_MAP_ENTRY(IPProtoCprDataClientStatusChangeActivity, IPProtoCprDataClientStatusChangeActivity)

	ACTIVITY_MAP_ENTRY(PRDataClientIdleActivity, PRDataClientIdle)

	ACTIVITY_MAP_ENTRY(IPProtoCprClientLeaveActivity, IPProtoCprClientLeave)

	ACTIVITY_MAP_ENTRY(IPProtoCprIoctlActivity, IPProtoCprIoctl)

    ACTIVITY_MAP_ENTRY(IPProtoCprStopActivity, IPProtoCprStop)

#ifdef SYMBIAN_ADAPTIVE_TCP_RECEIVE_WINDOW

	ACTIVITY_MAP_ENTRY(IPProtoCprNotificationActivity, IPProtoCprNotification)

#endif // SYMBIAN_ADAPTIVE_TCP_RECEIVE_WINDOW

ACTIVITY_MAP_END_BASE(CprActivities, coreCprActivities)

}

//-=========================================================

//

// CIPProtoConnectionProvider methods

//

//-=========================================================

CIPProtoConnectionProvider* CIPProtoConnectionProvider::NewL(CConnectionProviderFactoryBase& aFactory)

    {

    CIPProtoConnectionProvider* prov = new (ELeave) CIPProtoConnectionProvider(aFactory,IPProtoCprActivities::activityMap::Self());

    CleanupStack::PushL(prov);

    prov->ConstructL();

    CleanupStack::Pop(prov);

    return prov;

    }

CIPProtoConnectionProvider::~CIPProtoConnectionProvider()

    {

    LOG_NODE_DESTROY(KIPProtoCprTag, CIPProtoConnectionProvider);

    CancelTimer();

    delete iTimer;

    iNodeLocalExtensions.Close();

    }

CIPProtoConnectionProvider::CIPProtoConnectionProvider(CConnectionProviderFactoryBase& aFactory, const MeshMachine::TNodeActivityMap& aActivityMap) :

	CCoreConnectionProvider(aFactory,aActivityMap),

	ALegacySubConnectionActiveApiExt(this),

	TIfStaticFetcherNearestInHierarchy(this),

    iDataMonitoringConnProvisioningInfo(&iDataVolumes, &iThresholds)

    {

    LOG_NODE_CREATE(KIPProtoCprTag, CIPProtoConnectionProvider);

    }

void CIPProtoConnectionProvider::ConstructL()

    {

    iTimer = COneShotTimer::NewL(ESocketTimerPriority, this);

    ADataMonitoringProvider::ConstructL();

    CCoreConnectionProvider::ConstructL(KIPProtoCPRPreallocatedActivityBufferSize);

    }

void CIPProtoConnectionProvider::ReturnInterfacePtrL(ADataMonitoringProtocolReq*& aInterface)

	{

	aInterface = this;

	}

void CIPProtoConnectionProvider::ReturnInterfacePtrL(MLinkCprApiExt*& aInterface) 	  	 

	{ 	  	 

	//Get the extension from the Access Point Config, it must be there by now (constructed on provision) 	  	 

	//We are the only node ever accessing the interface, this is why we can safely return it as non-const. 	  	 

	CLinkCprExtensionApi* ext = const_cast<CLinkCprExtensionApi*>(static_cast<const CLinkCprExtensionApi*>(AccessPointConfig().FindExtension(CLinkCprExtensionApi::TypeId()))); 	  	 

	ASSERT(ext); //Udeb 	  	 

	User::LeaveIfError(ext? KErrNone : KErrCorrupt); //Urel 	  	 

	aInterface = ext; 	  	 

	}

void CIPProtoConnectionProvider::ReturnInterfacePtrL(ESock::MLegacyControlApiExt*& aInterface)

	{

	aInterface = this;

	}

void CIPProtoConnectionProvider::ReturnInterfacePtrL(ESock::ALegacySubConnectionActiveApiExt*& aInterface)

	{

	aInterface = this;

	}

/**

Retrieves the ALegacyEnumerateSubConnectionsApiExt implementation

*/

void CIPProtoConnectionProvider::ReturnInterfacePtrL(ESock::ALegacyEnumerateSubConnectionsApiExt*& aInterface)

    {

    aInterface = this;

    }

void CIPProtoConnectionProvider::EnumerateSubConnections(CLegacyEnumerateSubConnectionsResponder*& aResponder)

	{

	TInt count = CountClients<TDefaultClientMatchPolicy>(TClientType(TCFClientType::EData, TCFClientType::EStarted));

	/*

	  Plus one for to match legacy behaviour. The extra subconnection is there to

	  represent the connectino and all its subconnections as a whole.

	  So subconnection array is accessed as:

	    [0] = Entire connection

		[1] = Default subconnection

		[2] = non-default subconnection ...

		...

	*/

	count += 1;

	CLegacyEnumerateSubConnectionsResponder::CompleteClient(aResponder, count);

	}

void CIPProtoConnectionProvider::ReceivedL(const TRuntimeCtxId& aSender, const TNodeId& aRecipient, TSignatureBase& aMessage)

    {

	ESOCK_DEBUG_MESSAGE_INTERCEPT(aSender, aMessage, aRecipient);

    TNodeContext<CIPProtoConnectionProvider> ctx(*this, aMessage, aSender, aRecipient);

   	Received(ctx);

    User::LeaveIfError(ctx.iReturn);

	}

void CIPProtoConnectionProvider::Received(MeshMachine::TNodeContextBase& aContext)

    {

    Messages::TNodeSignal::TMessageId noPeerIds[] = {

        TCFFactory::TPeerFoundOrCreated::Id(),

        TCFPeer::TJoinRequest::Id(),

        //TDataMonitoringInternal no-peer as Flow sending directly.

        TCFDataMonitoringNotification::TDataMonitoringNotification::Id(),

        TCFIPProtoMessage::TOpenCloseRoute::Id(),

        Messages::TNodeSignal::TMessageId()

        };

    MeshMachine::AMMNodeBase::Received(noPeerIds, aContext);

	MeshMachine::AMMNodeBase::PostReceived(aContext);

	}

void CIPProtoConnectionProvider::LinkUp()

	{

	ESOCK_EXTLOG_VAR( (KESockConnectionTag, KIPProtoCprSubTag, _L8("CIPProtoConnectionProvider %x:\tLinkUp()"), this) );

	ASSERT(!iLinkUp);

	iLinkUp = ETrue;

	iLastControlClientsCount = ControlClientsCount();

	TTime now;

	now.UniversalTime();

	iStartTime = now;

	}

void CIPProtoConnectionProvider::LinkDown()

	{

	ESOCK_EXTLOG_VAR( (KESockConnectionTag, KIPProtoCprSubTag, _L8("CIPProtoConnectionProvider %x:\tLinkDown()"), this) );

	iLinkUp = EFalse;

	CancelTimer();

	}

void CIPProtoConnectionProvider::OpenRoute()

	{

	if (iTimerExpired)

		{

		return;

		}

	iRouteCount++;

	ESOCK_EXTLOG_VAR( (KESockConnectionTag, KIPProtoCprSubTag, _L8("CIPProtoConnectionProvider %x:\tOpenRoute() count %d"), this, iRouteCount) );

	}

void CIPProtoConnectionProvider::CloseRoute()

	{

	ESOCK_EXTLOG_VAR( (KESockConnectionTag, KIPProtoCprSubTag, _L8("CIPProtoConnectionProvider %x:\tCloseRoute() count %d timer expired: %d"), this, iRouteCount-1, iTimerExpired) );

	if (iTimerExpired)

		{

		return;

		}

	ASSERT(iRouteCount > 0);

	if (--iRouteCount == 0 && !iTimer->IsActive())

		{

		// if the number of calls to CloseRoute() matches those to OpenRoute(), then ensure that

		// the idle timer is running.

		TTimerType newMode;

		if ( (iRouteCountStretchOne)

			&& (iTickThreshold[iTimerMode] != (TInt)KMaxTUint32)

			)

			{

			// Note that there is a slim possiblility that the OpenRoute / CloseRoute event pair

			// occured too quickly and that a TimerComplete event did not occur to check iRouteCount.

			// To account for the OpenRoute / CloseRoute event pair artificially lengthen the iRouteCount.

			// If the current timer is disabled then the OpenRoute / CloseRoute event pair

			// would never have been detected so then dont stretch the event.

			newMode = DecideTimerMode(1);

			}

		else

			{

			newMode = DecideTimerMode(iRouteCount);

			}

		if (newMode != ETimerUnknown)

			SetTimerMode(newMode);

		else

			ResetTimer();

		}

	}

void CIPProtoConnectionProvider::TimerComplete(TInt /*aError*/)

	{

	ESOCK_EXTLOG_VAR( (KESockConnectionTag, KIPProtoCprSubTag, _L8("CIPProtoConnectionProvider %x:\tTimer Complete %d/%d ticks, Mode %d"), this, iExpiredTicks+1, iTickThreshold[iTimerMode], iTimerMode) );

	if (iTimerMode == ETimerImmediate)

		{

		ESOCK_EXTLOG_VAR( (KESockConnectionTag, KIPProtoCprSubTag, _L8("CIPProtoConnectionProvider %x:\tIdle timeout completed - stopping interface"), this) );

		TimerExpired();

		return;

		}

	ASSERT(iLinkUp);

	// reset the iRouteCountStretchOne

	iRouteCountStretchOne = EFalse;

	// Determine if we need to alter the timer mode

	TTimerType newMode = DecideTimerMode(iRouteCount);

	iConnectionControlActivity = EFalse; // (do not reset before DecideTimerMode())

	if (0 == iRouteCount)

		{

		// Note that there is a slim possiblility that the OpenRoute / CloseRoute event pair

		// occured too quickly and that a TimerComplete event did not occur to check iRouteCount.

		// If this occurs then the newMode selected here will be incorrect.

		// Extend iRouteCount if iRouteCount > 0 -> iRouteCount = 0 is seen before the next timer event

		iRouteCountStretchOne = ETrue;

		}

	// Also a similar issue of connection Start/Attach type activity occuring too quickly to

	// be noticed by iConnectionControlActivity might be present.

	// TODO create a test and solution to prove the connection Start/Attach type activity.

	// set new timer mode if required

	if (newMode != ETimerUnknown)

		SetTimerMode(newMode);

	if (iPeriodActivity)

		{

		iPeriodActivity = EFalse;

		// Reset the timer on packet activity (if the timer mode hasn't just been changed).

		// (Should this reset only the Long timer, or should it reset the timer in all modes ?)

		if (newMode == ETimerUnknown)

			{

			ESOCK_EXTLOG_VAR( (KESockConnectionTag, KIPProtoCprSubTag, _L8("CIPProtoConnectionProvider %x:\tTimer reset due to packet activity"), this) );

			ResetTimer();

			}

		}

	else

		{

		if (newMode == ETimerUnknown)

			{

			// No Activity and no change in timer state, check if timer has expired

			// (checking first for a value of KMaxTUint32, which means the timer is disabled).

			if (iTickThreshold[iTimerMode] != (TInt)KMaxTUint32)

				{

				if (iTickThreshold[iTimerMode] <= ++iExpiredTicks)

					{

					ESOCK_EXTLOG_VAR( (KESockConnectionTag, KIPProtoCprSubTag, _L8("CIPProtoConnectionProvider %x:\tIdle timeout completed"), this) );

					TimerExpired();

					}

				else

					{

					StartNextTick();

					}

				}

			}

		}

	}

CIPProtoConnectionProvider::TTimerType CIPProtoConnectionProvider::DecideTimerMode(TInt aRouteCount)

	{

	TTimerType newMode = ETimerUnknown;

	TInt currentControlClientsCount = ControlClientsCount();

	if (currentControlClientsCount > iLastControlClientsCount)

		{

		iConnectionControlActivity = ETrue;