// Copyright (c) 2007-2009 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:
//
#include <elements/nm_messages_errorrecovery.h>
#include <comms-infras/ss_coreprstates.h>
#include "mobilitymcpractivities.h"
#include <comms-infras/mobilitymcprstates.h>
#include <comms-infras/ss_nodemessages_selector.h>
#include <comms-infras/ss_nodemessages_mobility.h>
#include <comms-infras/ss_nodemessages_availability.h>
#include <comms-infras/ss_logext.h>
#ifdef _DEBUG
// Panic category for "absolutely impossible!" vanilla ASSERT()-type panics from this module
// (if it could happen through user error then you should give it an explicit, documented, category + code)
_LIT(KSpecAssert_ESockMbCrMCPRAct, "ESockMbCrMCPRAct");
#endif
#ifdef __CFLOG_ACTIVE
#define KCoreMCprStatesTag KESockMetaConnectionTag
_LIT8(KCoreMCprStatesSubTag, "coremcprstate");
#endif
using namespace ESock;
using namespace CorePanics;
using namespace MCprStates;
using namespace NetStateMachine;
using namespace MCprActivities;
using namespace MobilityMCprActivities;
using namespace Messages;
using namespace MeshMachine;
///////////////////////////////////////////////////////////////////////////////
//Panics
#ifdef _DEBUG
_LIT (KCoreMobileMCprPanic,"CoreMobileMCprPanic");
#endif
namespace MobilityMCprPrioritisedSelectActivity
{
DECLARE_DEFINE_CUSTOM_NODEACTIVITY(ECFActivitySelect, MCprPrioritisedSelect, TCFSelector::TSimpleSelect, CSelectNextLayerActivity::NewL)
//Reply from TAwaitingSelectNextLayer if no choices, otherwise accept
FIRST_NODEACTIVITY_ENTRY(MCprStates::TAwaitingSelectNextLayer, MeshMachine::TNoTag)
THROUGH_NODEACTIVITY_ENTRY(KNoTag, CSelectNextLayerActivity::TProcessPrioritisedSelectionPolicy, MCprStates::TSelectedProvider)
//Start the selection main loop
NODEACTIVITY_ENTRY(MCprStates::KSelectedProvider, CSelectNextLayerActivity::TFindOrCreateTierManager, MCprStates::TAwaitingTierManagerCreated, MeshMachine::TNoTag)
NODEACTIVITY_ENTRY(KNoTag, CSelectNextLayerActivity::TJoinTierManager, CoreStates::TAwaitingJoinComplete, MeshMachine::TNoTag)
//Select next provider and enter the selection internal loop if provider received. Break if SelectComplete(NULL).
NODEACTIVITY_ENTRY(KNoTag, CSelectNextLayerActivity::TSelectNextLayer, MCprStates::TAwaitingSelectComplete, CSelectNextLayerActivity::TNoTagOrSelectedProviderIsNull)
NODEACTIVITY_ENTRY(KNoTag, CSelectNextLayerActivity::TAddProviderInfo, MCprStates::TAwaitingSelectComplete, CSelectNextLayerActivity::TNoTagBackwardsOrJoinServiceProvider)
//Break the selection internal loop if SelectComplete(NULL), otherwise stay in this tripple
NODEACTIVITY_ENTRY(MCprStates::KJoinServiceProvider, CSelectNextLayerActivity::TJoinServiceProvider, CoreStates::TAwaitingJoinComplete, MeshMachine::TNoTag)
THROUGH_NODEACTIVITY_ENTRY(KNoTag, CSelectNextLayerActivity::TSendSelectComplete, CSelectNextLayerActivity::TSelectedProviderIsNullOrJoinServiceProviderBackward)
//Break the selection main loop if no more choices, otherwise go back again
THROUGH_NODEACTIVITY_ENTRY(MCprStates::KSelectedProviderIsNull, CSelectNextLayerActivity::TLeaveTierManager, CSelectNextLayerActivity::TNoTagOrSelectedProviderBackward)
//Finish the activity
LAST_NODEACTIVITY_ENTRY(KNoTag, MCprStates::TSendFinalSelectComplete)
NODEACTIVITY_END()
}
namespace MobilityMCprMobilityActivity
{
//This activity monitors availability status on this node
//NOTE: This activity assumes there is only one data client (Cpr) of this MCpr!
//NOTE: This activity can only be executed in the context of CMobilityMetaConnectionProvider (or derived)
//NOTE: TError may come from the availability activity only. It is handled by the ECFActivityError.
DECLARE_DEFINE_CUSTOM_NODEACTIVITY(ECFActivityMCprMobility, MCprMobility, TCFMobilityProvider::TStartMobility, MobilityMCprActivities::CMobilityActivity::NewL)
//The activity only makes sense after the startup sequence completed on this layer
FIRST_NODEACTIVITY_ENTRY(MobilityMCprStates::TAwaitingStartMobility, MeshMachine::TNoTag/*BlockedByNoServiceProviderStarted*/)
//Report to the client that we have successfully started
THROUGH_NODEACTIVITY_ENTRY(KNoTag, MobilityMCprStates::TReplyMobilityStarted, MeshMachine::TNoTag)
//Register with self for availability notifications. Self will report _any_ availabilty change (even available->available) back to
//this activity. This activity can trigger mobility (see CMobilityActivity::TNoTagOrErrorTagOrStartMobilityHandshakeBackwardsOnMobilityTriggerBlockedByErrorRecovery)
//if it sees that the availability notification has influcenced what the currently preffered bearer should be.
THROUGH_NODEACTIVITY_ENTRY(KNoTag, CMobilityActivity::TSendAvailabilityRequest, MeshMachine::TTag<MobilityMCprStates::KStartMobilityHandshake>)
//<BEGIN> MAIN LOOP ****************
//The main mobility handshake loop. The loop is executed when performing migration from one service provider to another.
//The entry condition for the loop is that:
//- upgrade: a better then current access point is now available (a better access point reported available)
//- downgrade:
// (a) the current access point is being rejected by the client (e.g.: the current access point doesn't seem to route traffic where required)
// (b) the current access point ceases to be available (reports availability below reasonable threshold).
// NOTE: if the current bearer ceases to be available completely (goes down), then this will be assisted by an error recovery request;
// NOTE: This tuple doesn't actually do (b), i.e.: assumes the threshold of '1' (in 0..100 availability score range)
//Before awaitng for availability change or rejection by the client (TAwaitingCurrentCarrierRejectedOrAvailabilityChange), the activity
//first checks (TNoTagOrAwaitMobilityBlockedByErrorRecovery) if the availability has changed since it last checked
//(availability could have been reported amidst the previous handshake loop)
THROUGH_NODEACTIVITY_ENTRY(MobilityMCprStates::KStartMobilityHandshake, CMobilityActivity::TClearHandshakingFlag, CMobilityActivity::TNoTagOrAwaitMobilityBlockedByErrorRecovery)
NODEACTIVITY_ENTRY(MobilityMCprStates::KAwaitMobility, MeshMachine::TDoNothing, CMobilityActivity::TAwaitingCurrentCarrierRejectedOrAvailabilityChange, CMobilityActivity::TNoTagOrAwaitMobilityBackwardsOnMobilityTriggerBlockedByErrorRecovery)
//Mobility has been triggered ((a) or (b)). Start mobility handshake (set handshaking flag and inform the client about the preferred bearer)
NODEACTIVITY_ENTRY(KNoTag, CMobilityActivity::TInformMigrationAvailableAndSetHandshakingFlag, MobilityMCprStates::TAwaitingMigrationRequestedOrRejected, CMobilityActivity::TNoTagOrStartMobilityHandshakeBackwards)
//The client accepts the new access point.
//For the moment it is sufficient to use the re-connect activity, in the future we may want to
//customise the behavior, for example start the new layer before rebinding it, etc.
//Should rebinding fail, the mobility activity will be set to an error mode. The error mode will be cleared if
//there are other bearers this activity can offer. If there aren't the data client will be errored.
NODEACTIVITY_ENTRY(KNoTag, CMobilityActivity::TRequestReConnect, MCprStates::TAwaitingReConnectCompleteOrError, CMobilityActivity::TNoTagOrStartMobilityHandshakeBackwards)
//Rebinding has been successful. As far as MCPR is concerned, the mobility is finished, but the MCPR must await
//for the handshake (accept|reject) before it can offer another bearer.
NODEACTIVITY_ENTRY(KNoTag, CMobilityActivity::TInformMigrationCompleted, MobilityMCprStates::TAwaitingMigrationAcceptedOrRejected, CMobilityActivity::TRejectedOrStartMobilityHandshakeBackwards)
NODEACTIVITY_ENTRY(MobilityMCprStates::KRejected, CoreNetStates::TStopDataClients, CoreNetStates::TAwaitingDataClientsStopped, MeshMachine::TTag<MobilityMCprStates::KStartMobilityHandshake|NetStateMachine::EBackward>)
NODEACTIVITY_END()
}
namespace MCprConnectionStartRecoveryActivity
{
//MCprConnectionStartRecovery activity belongs to a group of Error Recovery Activities.
//Error Recovery Activities need to handle their own errors (generated as well as returned).
DECLARE_DEFINE_CUSTOM_NODEACTIVITY(ECFActivityConnectionStartRecovery, MCprConnectionStartRecovery, TEErrorRecovery::TErrorRecoveryRequest, CConnectionRecoveryActivity::NewL)
FIRST_NODEACTIVITY_ENTRY(MCprStates::TAwaitingConnectionStartRecoveryRequest, MobilityMCprStates::TNoTagOrErrorTagIfMobilityRunning)
LAST_NODEACTIVITY_ENTRY(KErrorTag, CConnectionRecoveryActivity::TSendIgnoreRecoveryResponse)
THROUGH_NODEACTIVITY_ENTRY(KNoTag, CConnectionRecoveryActivity::TStoreErrorContext, MeshMachine::TNoTag)
//Decide if it it possible/sensible to reconnect and retry
//This transition will leave if not possible to recover (==TSendPropagateRecoveryResponse from Transition::Error())
NODEACTIVITY_ENTRY(KNoTag, CConnectionRecoveryActivity::TProcessConnectionStartRecoveryRequest, MCprStates::TAwaitingReConnectCompleteOrError, MeshMachine::TNoTagOrErrorTag) //Own error handling
//Respond with retry
LAST_NODEACTIVITY_ENTRY(KNoTag, CConnectionRecoveryActivity::TSendRetryRecoveryResponse)
//Respond with propagate - the reconnect failed (we could think of re-trying reconnect again though..)
LAST_NODEACTIVITY_ENTRY(KErrorTag, CConnectionRecoveryActivity::TSendPropagateRecoveryResponse)
NODEACTIVITY_END()
}
namespace MCprConnectionGoneDownRecoveryActivity
{
//MCprConnectionGoneDownRecovery activity belongs to a group of Error Recovery Activities.
//Error Recovery Activities need to handle their own errors (generated as well as returned).
//NOTE: This activity is only a reference one. All it does it waits for the mobility handshake to finish before
//continuing with the stack cleanup originated by TGoneDown.
DECLARE_DEFINE_CUSTOM_NODEACTIVITY(ECFActivityConnectionGoneDownRecovery, MCprConnectionGoneDownRecovery, TEErrorRecovery::TErrorRecoveryRequest, CConnectionRecoveryActivity::NewL)
FIRST_NODEACTIVITY_ENTRY(MCprStates::TAwaitingConnectionGoneDownRecoveryRequest, MeshMachine::TNoTag)
THROUGH_NODEACTIVITY_ENTRY(KNoTag, CConnectionRecoveryActivity::TStoreErrorContext, CoreStates::TNoTagOrNoPeer)
LAST_NODEACTIVITY_ENTRY(CoreStates::KNoPeer, MCprStates::TSendPropagateRecoveryResponse) //Take error codes directly from the request
THROUGH_NODEACTIVITY_ENTRY(KNoTag, MeshMachine::TDoNothing, MobilityMCprStates::TNoTagBlockedByMobilityHandshaking)
//Decide if it it possible/sensible to retry
//This transition will leave if not possible to recover (==TSendPropagateRecoveryResponse from Transition::Error())
LAST_NODEACTIVITY_ENTRY(KNoTag, CConnectionRecoveryActivity::TProcessConnectionGoneDownRecoveryRequest) //Take error codes from the request directly
NODEACTIVITY_END()
}
namespace MobilityMCprActivities
{
DEFINE_EXPORT_ACTIVITY_MAP(mobilityMCprActivities)
ACTIVITY_MAP_ENTRY(MobilityMCprPrioritisedSelectActivity, MCprPrioritisedSelect)
ACTIVITY_MAP_ENTRY(MobilityMCprMobilityActivity, MCprMobility)
ACTIVITY_MAP_ENTRY(MCprConnectionStartRecoveryActivity,MCprConnectionStartRecovery)
ACTIVITY_MAP_ENTRY(MCprConnectionGoneDownRecoveryActivity,MCprConnectionGoneDownRecovery)
ACTIVITY_MAP_END_BASE(MCprActivities, coreMCprActivities)
}
///////////////////////////////////////////////////////////////////////////////
// CMobilityActivity
MeshMachine::CNodeActivityBase* MobilityMCprActivities::CMobilityActivity::NewL(const MeshMachine::TNodeActivity& aActivitySig, MeshMachine::AMMNodeBase& aNode)
{
return new (ELeave) CMobilityActivity(aActivitySig, aNode);
}
CMobilityActivity::CMobilityActivity(const MeshMachine::TNodeActivity& aActivitySig, MeshMachine::AMMNodeBase& aNode)
: MeshMachine::CNodeRetryActivity(aActivitySig, aNode),
//NOTE: This reference implementation will currently only react to availability oscilating around
//the middle point on the availability scale
iAvailabilityScoreTreshold((TAvailabilityStatus::EMinAvailabilityScore + TAvailabilityStatus::EMaxAvailabilityScore) / 2)
{
}
CMobilityActivity::~CMobilityActivity()
{
//cancel availablilty subscription.
RClientInterface::OpenPostMessageClose(TNodeCtxId(ActivityId(), iNode.Id()), iNode.Id(), TEBase::TCancel().CRef());
ClearHandshakingFlag();
}
TBool CMobilityActivity::EvaluatePreference(CMobilityActivity::TContext& aContext)
{
//Find the most preferred Service Provider
TClientIter<TDefaultClientMatchPolicy> iter = iNode.GetClientIter<TDefaultClientMatchPolicy>(TClientType(TCFClientType::EServProvider));
__ASSERT_DEBUG(iter[0], User::Panic(KCoreMobileMCprPanic, KPanicNoServiceProvider)); //A Service Provider must exist!
//If we are evaluating the preferences as a result of carrier rejection, we will
//not propose the most recently rejected one.
//NOTE: This implementation does not provide a blacklisting mechanism.
//It does not store any blacklisting information.
//lastRejected is only the recently rejected carrier that may not be proposed again for the client
//to be able to renegotiate the old bearer and continue using the connection.
//NOTE: This reference implementation will work only when at least one of the two most preferred carriers
//can be used (accepted) by the mobility client at any given time.
RMetaServiceProviderInterface* candidate = NULL;
RMetaServiceProviderInterface* lastRejected = NULL;
if ( Error() != KErrNone )
{
//The activity is running in an error mode attempting to recover from it.
//There's a couple of reasons why the activity may be in an error mode:
//- rejection
// - current bearer rejected;
// - proposed bearer rejected;
// - failure to migrate to the proposed bearer;
lastRejected = iPreferred ? iPreferred :
static_cast<RMetaServiceProviderInterface*>(aContext.Node().ServiceProvider());
}
iPreferred = NULL; //Do not remember rejected candidate any longer
while ((candidate = static_cast<RMetaServiceProviderInterface*>(iter++)) != NULL)
{
const TAvailabilityStatus& status = candidate->AvailabilityStatus();
if (!status.IsKnown())
{
//We are still waiting for the availability check results for this AP
//Ignore the whole evaluation now as we may soon receive a better candidate
//to propose to the mobility client.
return EFalse;
}
if (status.Score() > iAvailabilityScoreTreshold
&& candidate!=lastRejected)
{
if (candidate->Flags() & TCFClientType::EStarted)
{
//The preferred one is the current one, is still available and was not just rejected.
//No need to do anything more.
return EFalse;
}
//A new match found
iPreferred = candidate;
return ETrue;
}
}
//There is no choice for migration
return EFalse; //No match found
}
void CMobilityActivity::SetHandshakingFlag()
{
static_cast<CMobilityMetaConnectionProvider&>(iNode).iIsHandshakingNow = ETrue;
}
void CMobilityActivity::ClearHandshakingFlag()
{
static_cast<CMobilityMetaConnectionProvider&>(iNode).iIsHandshakingNow = EFalse;
}
DEFINE_SMELEMENT(CMobilityActivity::TNoTagOrStartMobilityHandshakeBackwards, NetStateMachine::MStateFork, CMobilityActivity::TContext)
TInt CMobilityActivity::TNoTagOrStartMobilityHandshakeBackwards::TransitionTag()
{
if (iContext.Activity()->Error() == KErrNone &&
(message_cast<TCFMobilityProvider::TMigrationRequested>(&iContext.iMessage) ||
message_cast<TCFMcpr::TReConnectComplete>(&iContext.iMessage)))
{
return MeshMachine::KNoTag | NetStateMachine::EForward;
}
return MobilityMCprStates::KStartMobilityHandshake | NetStateMachine::EBackward;
}
DEFINE_SMELEMENT(CMobilityActivity::TNoTagOrAwaitMobilityBackwardsOnMobilityTrigger, NetStateMachine::MStateFork, CMobilityActivity::TContext)
TInt CMobilityActivity::TNoTagOrAwaitMobilityBackwardsOnMobilityTrigger::TransitionTag()
{
//This is where the judgement is made on whether to trigger mobility (offer the client another bearer)
//or ignore and come back waiting.
__ASSERT_DEBUG(iContext.iMessage.IsMessage<TCFMobilityProvider::TMigrationRejected>() ||
iContext.iMessage.IsMessage<TCFAvailabilityControlClient::TAvailabilityNotification>(),
User::Panic(KCoreMobileMCprPanic, KPanicIncorrectMessage));
__ASSERT_DEBUG(iContext.iNodeActivity, User::Panic(KCoreMobileMCprPanic, KPanicNoActivity));
CMobilityActivity& activity = static_cast<CMobilityActivity&>(*iContext.iNodeActivity);
if (activity.EvaluatePreference(iContext))
{
activity.SetError(KErrNone);
return KNoTag;
}
else if (activity.Error() != KErrNone )
{
activity.PostToOriginators(TEBase::TError(activity.Error()).CRef());
activity.SetError(KErrNone);
}
return MobilityMCprStates::KAwaitMobility | NetStateMachine::EBackward;
}
DEFINE_SMELEMENT(CMobilityActivity::TNoTagOrAwaitMobility, NetStateMachine::MStateFork, CMobilityActivity::TContext)
TInt CMobilityActivity::TNoTagOrAwaitMobility::TransitionTag()
{
__ASSERT_DEBUG(iContext.iNodeActivity, User::Panic(KCoreMobileMCprPanic, KPanicNoActivity));
CMobilityActivity& activity = static_cast<CMobilityActivity&>(*iContext.iNodeActivity);
if (activity.EvaluatePreference(iContext))
{
activity.SetError(KErrNone);
return KNoTag;
}
else if (activity.Error() != KErrNone )
{
activity.PostToOriginators(TEBase::TError(activity.Error()).CRef());
activity.SetError(KErrNone);
}
return MobilityMCprStates::KAwaitMobility;
}
DEFINE_SMELEMENT(CMobilityActivity::TRejectedOrStartMobilityHandshakeBackwards, NetStateMachine::MStateFork, MobilityMCprStates::TContext)
TInt CMobilityActivity::TRejectedOrStartMobilityHandshakeBackwards::TransitionTag()
{
__ASSERT_DEBUG(iContext.iNodeActivity, User::Panic(KCoreMobileMCprPanic, KPanicNoActivity));
CMobilityActivity& activity = static_cast<CMobilityActivity&>(*iContext.iNodeActivity);
// if rejected last ap and there's no more
if (iContext.iMessage.IsMessage<TCFMobilityProvider::TMigrationRejected>())
{
TBool otherSP = EFalse;
// Find if there anymore available non rejected service providers
TClientIter<TDefaultClientMatchPolicy> iter = iContext.Node().GetClientIter<TDefaultClientMatchPolicy>(TClientType(TCFClientType::EServProvider));
__ASSERT_DEBUG(iter[0], User::Panic(KCoreMobileMCprPanic, KPanicNoServiceProvider)); //A Service Provider must exist!
RMetaServiceProviderInterface* rejected = static_cast<RMetaServiceProviderInterface*>(iContext.Node().ServiceProvider());
RMetaServiceProviderInterface* candidate = NULL;
while ((candidate = static_cast<RMetaServiceProviderInterface*>(iter++)) != NULL)
{
if (candidate == rejected)
{
continue;
}
const TAvailabilityStatus& status = candidate->AvailabilityStatus();
if (!status.IsKnown())
{
continue;
}
if (status.Score() > activity.iAvailabilityScoreTreshold)
{
otherSP=ETrue;
break;
}
}
if (!otherSP)
{
return MobilityMCprStates::KRejected;
}
}
return MobilityMCprStates::KStartMobilityHandshake | NetStateMachine::EBackward;
}
DEFINE_SMELEMENT(CMobilityActivity::TSendAvailabilityRequest, NetStateMachine::MStateTransition, CMobilityActivity::TContext)
void CMobilityActivity::TSendAvailabilityRequest::DoL()
{
//Issue availability notification registration to start the availability activity on this node.
//NOTE: since we've requested availability from self, we are interested in any change (even available->available)
//since we could be switching from AP1 available to AP2 available. Either way we must recalculate.
//We're hence interested in TAvailabilitySubscriptionOptions::EAnyNestedChange.
TAvailabilitySubscriptionOptions availabilityOptions(TAvailabilitySubscriptionOptions::EAnyNestedChange);
TCFAvailabilityProvider::TAvailabilityNotificationRegistration msg(availabilityOptions);
RClientInterface::OpenPostMessageClose(TNodeCtxId(iContext.ActivityId(), iContext.NodeId()), iContext.NodeId(), msg);
//Do not set iPostedTo. We are not waiting for the responses.
}
DEFINE_SMELEMENT(CMobilityActivity::TInformMigrationAvailableAndSetHandshakingFlag, NetStateMachine::MStateTransition, CMobilityActivity::TContext)
void CMobilityActivity::TInformMigrationAvailableAndSetHandshakingFlag::DoL()
{
__ASSERT_DEBUG(iContext.iNodeActivity, User::Panic(KCoreMobileMCprPanic, KPanicNoActivity));
CMobilityActivity& activity = static_cast<CMobilityActivity&>(*iContext.iNodeActivity);
//Inform the CPR that a potential migration is available. We only support a single data client
//in this implementation.
__ASSERT_DEBUG(activity.iPreferred, User::Panic(KCoreMobileMCprPanic, KPanicNoServiceProvider));
//Compute all this here to keep EvaluatePreference() as fast as possible
activity.iCurrent = static_cast<RMetaServiceProviderInterface*>(iContext.Node().GetFirstClient<TDefaultClientMatchPolicy>(TClientType(TCFClientType::EServProvider, TCFClientType::EStarted)));
__ASSERT_DEBUG(activity.iCurrent, User::Panic(KCoreMobileMCprPanic, KPanicNoServiceProvider));
//Perform a simple check if this is an upgrade or not
TClientIter<TDefaultClientMatchPolicy> iter = iContext.Node().GetClientIter<TDefaultClientMatchPolicy>(TClientType(TCFClientType::EServProvider));
RNodeInterface* sp = iter++;
while (sp && sp!=activity.iCurrent && sp!=activity.iPreferred)
{
sp = iter++;
}
TBool isUpgrade = (sp != activity.iCurrent); //If current was found first -> this is not an upgrade
TCFMobilityControlClient::TMigrationNotification msg(activity.iCurrent->ProviderInfo().APId(),
activity.iPreferred->ProviderInfo().APId(),
isUpgrade, EFalse);
activity.PostToOriginators(msg);
activity.ClearPostedTo();
activity.SetHandshakingFlag();
}
DEFINE_SMELEMENT(CMobilityActivity::TAwaitingCurrentCarrierRejectedOrAvailabilityChange, NetStateMachine::MState, CMobilityActivity::TContext)
TBool CMobilityActivity::TAwaitingCurrentCarrierRejectedOrAvailabilityChange::Accept()
{
if (iContext.iMessage.IsMessage<TCFMobilityProvider::TMigrationRejected>())
{
iContext.Activity()->SetError(KErrNotFound);
return ETrue;
}
return iContext.iMessage.IsMessage<TCFAvailabilityControlClient::TAvailabilityNotification>();
}
DEFINE_SMELEMENT(CMobilityActivity::TRequestReConnect, NetStateMachine::MStateTransition, CMobilityActivity::TContext)
void CMobilityActivity::TRequestReConnect::DoL()
{
__ASSERT_DEBUG(iContext.iNodeActivity, User::Panic(KCoreMobileMCprPanic, KPanicNoActivity));
CMobilityActivity& activity = static_cast<CMobilityActivity&>(*iContext.iNodeActivity);
__ASSERT_DEBUG(activity.iPreferred, User::Panic(KCoreMobileMCprPanic, KPanicNoServiceProvider));
__ASSERT_DEBUG(activity.iCurrent, User::Panic(KCoreMobileMCprPanic, KPanicNoServiceProvider));
__ASSERT_DEBUG(activity.iCurrent!=activity.iPreferred, User::Panic(KSpecAssert_ESockMbCrMCPRAct, 1));
// For the moment it is sufficient to use the re-connect activity, in the future we may want to
// customise the behavior, for example start the new layer before rebinding it, etc.
TCFMcpr::TReConnect msg(activity.iCurrent->RecipientId(), activity.iPreferred->RecipientId());
activity.PostRequestTo(iContext.NodeId(), msg);
}
DEFINE_SMELEMENT(CMobilityActivity::TInformMigrationCompleted, NetStateMachine::MStateTransition, CMobilityActivity::TContext)
void CMobilityActivity::TInformMigrationCompleted::DoL()
{
__ASSERT_DEBUG(iContext.iNodeActivity, User::Panic(KCoreMobileMCprPanic, KPanicNoActivity));
iContext.iNodeActivity->PostToOriginators(TCFMobilityProvider::TMigrationComplete().CRef());
iContext.iNodeActivity->ClearPostedTo();
}
DEFINE_SMELEMENT(CMobilityActivity::TClearHandshakingFlag, NetStateMachine::MStateTransition, CMobilityActivity::TContext)
void CMobilityActivity::TClearHandshakingFlag::DoL()
{
__ASSERT_DEBUG(iContext.iNodeActivity, User::Panic(KCoreMobileMCprPanic, KPanicNoActivity));
CMobilityActivity& activity = static_cast<CMobilityActivity&>(*iContext.iNodeActivity);
activity.ClearHandshakingFlag();
}
///////////////////////////////////////////////////////////////////////////////
//CConnectionRecoveryActivity
MeshMachine::CNodeActivityBase* CConnectionRecoveryActivity::NewL(const MeshMachine::TNodeActivity& aActivitySig, MeshMachine::AMMNodeBase& aNode)
{
return new (ELeave) CConnectionRecoveryActivity(aActivitySig, aNode);
}
CConnectionRecoveryActivity::CConnectionRecoveryActivity(const MeshMachine::TNodeActivity& aActivitySig, MeshMachine::AMMNodeBase& aNode)
: MeshMachine::CNodeRetryActivity(aActivitySig, aNode)
{
}
void CConnectionRecoveryActivity::ReplyToOriginators(TEErrorRecovery::TErrorRecoveryResponse& aCFMessageSig)
{
NM_LOG_START_BLOCK(KESockMeshMachine, _L8("CConnectionRecoveryActivity::ReplyToOriginators"));
NM_LOG((KESockMeshMachine, _L8("[this=0x%08x] "), this));
NM_LOG_MESSAGE(KESockMeshMachine, aCFMessageSig);
NM_LOG_END_BLOCK(KESockMeshMachine, _L8("CConnectionRecoveryActivity::ReplyToOriginators"));
for (TInt n = iOriginators.Count() - 1;n>=0; n--)
{
Messages::TNodePeerId& peerId = iOriginators[n];
TCFSafeMessage::TResponseCarrierWest<TEErrorRecovery::TErrorRecoveryResponse> resp(aCFMessageSig, peerId.RecipientId());
peerId.PostMessage(iNode.Id(), resp);
}
}
DEFINE_SMELEMENT(CConnectionRecoveryActivity::TAwaitingReConnectComplete, NetStateMachine::MState, CConnectionRecoveryActivity::TContext)
TBool CConnectionRecoveryActivity::TAwaitingReConnectComplete::Accept()
{
__ASSERT_DEBUG(iContext.iNodeActivity, User::Panic(KCoreMobileMCprPanic, KPanicNoActivity));
TEBase::TError* msg = message_cast<TEBase::TError>(&iContext.iMessage);
if(msg)
{
CConnectionRecoveryActivity& ac = static_cast<CConnectionRecoveryActivity&>(*iContext.iNodeActivity);
TErrResponse propagateResp(TErrResponse::EPropagate,ac.iOriginalErrContext.iStateChange.iError,ac.iOriginalErrContext.iMessageId);
TEErrorRecovery::TErrorRecoveryResponse errResp(propagateResp);
ac.ReplyToOriginators(errResp);
ac.SetIdle();
iContext.iMessage.ClearMessageId();
return EFalse;
}
return (iContext.iMessage.IsMessage<TCFMcpr::TReConnectComplete>())? ETrue : EFalse;
}
void CConnectionRecoveryActivity::TTransitionBase::Error(TInt /*aError*/)
{
//Reply to the Error Activity and terminate
__ASSERT_DEBUG(iContext.iNodeActivity, User::Panic(KCoreMobileMCprPanic, KPanicNoActivity));
CConnectionRecoveryActivity& ac = static_cast<CConnectionRecoveryActivity&>(*iContext.iNodeActivity);
TEErrorRecovery::TErrorRecoveryResponse errResp(TErrResponse(TErrResponse::EPropagate,ac.iOriginalErrContext.iStateChange.iError,ac.iOriginalErrContext.iMessageId));
ac.ReplyToOriginators(errResp);
iContext.iNodeActivity->SetIdle();
}
DEFINE_SMELEMENT(CConnectionRecoveryActivity::TStoreErrorContext, NetStateMachine::MStateTransition, CConnectionRecoveryActivity::TContext)
void CConnectionRecoveryActivity::TStoreErrorContext::DoL()
{
__ASSERT_DEBUG(iContext.iNodeActivity, User::Panic(KCoreMobileMCprPanic, KPanicNoActivity));
CConnectionRecoveryActivity& activity = static_cast<CConnectionRecoveryActivity&>(*iContext.iNodeActivity);
activity.iOriginalErrContext = message_cast<TEErrorRecovery::TErrorRecoveryRequest>(iContext.iMessage).iErrContext;
}
DEFINE_SMELEMENT(CConnectionRecoveryActivity::TProcessConnectionStartRecoveryRequest, NetStateMachine::MStateTransition, CConnectionRecoveryActivity::TContext)
void CConnectionRecoveryActivity::TProcessConnectionStartRecoveryRequest::DoL()
{
__ASSERT_DEBUG(iContext.iNodeActivity, User::Panic(KCoreMobileMCprPanic, KPanicNoActivity));
RNodeInterface* startingSP = NULL;
RNodeInterface* stoppingSP = NULL;
//Choose Service Providers to work on
TClientIter<TDefaultClientMatchPolicy> iter = iContext.Node().GetClientIter<TDefaultClientMatchPolicy>(TClientType(TCFClientType::EServProvider));
RNodeInterface* itf = NULL;
for (itf = iter++; itf!=NULL && stoppingSP==NULL; itf = iter++)
{
if (itf->Flags() & TCFClientType::EStarted)
{
stoppingSP = itf; //Our current started Service Provider.
startingSP = iter++; //And the new one to try next
}
}
//Sanity check.
//The new provider must not be started, there can be only one started at a time.
__ASSERT_DEBUG(startingSP==NULL || (startingSP->Flags() & TCFClientType::EStarted)==0, User::Panic(KSpecAssert_ESockMbCrMCPRAct, 3));
//If there is no other Service Provider to try, return KErrNotFound
if (startingSP==NULL || stoppingSP == NULL)
{
#ifdef __CFLOG_ACTIVE
__CFLOG_VAR((KCoreMCprStatesTag, KCoreMCprStatesSubTag, _L8("WARNING: CConnectionRecoveryActivity::TProcessConnectionStartRecoveryRequest::DoL() - no more choices, abandoning recovery.")));
#endif
User::Leave(KErrNotFound);
}
//Diagnostinc - there must be a data client or we cannot be here
__ASSERT_DEBUG(iContext.Node().GetFirstClient<TDefaultClientMatchPolicy>(TClientType(TCFClientType::EData)), User::Panic(KCoreMobileMCprPanic, KPanicNoDataClient));
iContext.iNodeActivity->PostRequestTo(iContext.NodeId(),
TCFMcpr::TReConnect(stoppingSP->RecipientId(), startingSP->RecipientId()).CRef());
}
DEFINE_SMELEMENT(CConnectionRecoveryActivity::TProcessConnectionGoneDownRecoveryRequest, NetStateMachine::MStateTransition, CConnectionRecoveryActivity::TContext)
void CConnectionRecoveryActivity::TProcessConnectionGoneDownRecoveryRequest::DoL()
{
__ASSERT_DEBUG(iContext.iNodeActivity, User::Panic(KCoreMobileMCprPanic, KPanicNoActivity));
CConnectionRecoveryActivity& activity = static_cast<CConnectionRecoveryActivity&>(*iContext.iNodeActivity);
RNodeInterface* started = iContext.Node().GetFirstClient<TDefaultClientMatchPolicy>(TClientType(TCFClientType::EServProvider, TCFClientType::EStarted));
TUint apId = (TUint)activity.iOriginalErrContext.iInfo;
RNodeInterface* gonedownsp = iContext.Node().FindServiceProvider(apId);
if (started && started != gonedownsp)
{
CConnectionRecoveryActivity::TSendRetryRecoveryResponse tr(iContext);
tr.DoL();
}
else
{
CConnectionRecoveryActivity::TSendPropagateRecoveryResponse tr(iContext);
tr.DoL();
}
}
DEFINE_SMELEMENT(CConnectionRecoveryActivity::TSendRetryRecoveryResponse, NetStateMachine::MStateTransition, CConnectionRecoveryActivity::TContext)
void CConnectionRecoveryActivity::TSendRetryRecoveryResponse::DoL()
{
__ASSERT_DEBUG(iContext.iNodeActivity, User::Panic(KCoreMobileMCprPanic, KPanicNoActivity));
CConnectionRecoveryActivity& activity = static_cast<CConnectionRecoveryActivity&>(*iContext.iNodeActivity);
TEErrorRecovery::TErrorRecoveryResponse err(TErrResponse(TErrResponse::ERetry,KErrNone,activity.iOriginalErrContext.iMessageId));
activity.ReplyToOriginators(err);
}
DEFINE_SMELEMENT(CConnectionRecoveryActivity::TSendPropagateRecoveryResponse, NetStateMachine::MStateTransition, CConnectionRecoveryActivity::TContext)
void CConnectionRecoveryActivity::TSendPropagateRecoveryResponse::DoL()
{
__ASSERT_DEBUG(iContext.iNodeActivity, User::Panic(KCoreMobileMCprPanic, KPanicNoActivity));
CConnectionRecoveryActivity& activity = static_cast<CConnectionRecoveryActivity&>(*iContext.iNodeActivity);
TEErrorRecovery::TErrorRecoveryResponse err(TErrResponse(TErrResponse::EPropagate,
activity.iOriginalErrContext.iStateChange.iError,activity.iOriginalErrContext.iMessageId));
activity.ReplyToOriginators(err);
}
DEFINE_SMELEMENT(CConnectionRecoveryActivity::TSendIgnoreRecoveryResponse, NetStateMachine::MStateTransition, CConnectionRecoveryActivity::TContext)
void CConnectionRecoveryActivity::TSendIgnoreRecoveryResponse::DoL()
{
__ASSERT_DEBUG(iContext.iNodeActivity, User::Panic(KCoreMobileMCprPanic, KPanicNoActivity));
CConnectionRecoveryActivity& activity = static_cast<CConnectionRecoveryActivity&>(*iContext.iNodeActivity);
TEErrorRecovery::TErrorRecoveryResponse err(TErrResponse(TErrResponse::EIgnore,KErrNone,activity.iOriginalErrContext.iMessageId));
activity.ReplyToOriginators(err);
}