author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Tue, 25 May 2010 14:00:39 +0300 | |
branch | RCL_3 |
changeset 29 | 9644881fedd0 |
parent 28 | 9ddb1d67ebaf |
permissions | -rw-r--r-- |
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// Copyright (c) 2007-2009 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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// mobilityactivities.cpp |
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// Mobility Connection Provider activity definitions. |
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// |
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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/mobilitycpr.h> |
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#include "mobilitycpractivities.h" |
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#include <comms-infras/mobilitycprstates.h> |
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#include <comms-infras/ss_coreprstates.h> |
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#include <comms-infras/ss_nodemessages.h> |
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#include <comms-infras/corecpractivities.h> |
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#include <elements/nm_messages_errorrecovery.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_ESockMbCrCPRAct, "ESockMbCrCPRAct"); |
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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 MeshMachine; |
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using namespace NetStateMachine; |
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using namespace MobilityCprActivities; |
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using namespace MobilityCprStates; |
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using namespace CorePanics; |
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// |
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//Panics |
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#ifdef _DEBUG |
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_LIT (KCoreMobileCprPanic,"CoreMobileCprPanic"); |
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#endif |
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namespace CprMobilityActivity |
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{ |
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/** |
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Activity responsible for interacting with the ESock client mobility extension |
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API and with the MCPR for the acceptance or rejection of requests to migrate |
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bearer. |
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*/ |
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DECLARE_DEFINE_CUSTOM_NODEACTIVITY(ECFActivityCprMobility, MobilityCprMobility, TCFMobilityProvider::TStartMobility, CMobilityActivity::NewL) |
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FIRST_NODEACTIVITY_ENTRY(MobilityCprStates::TAwaitingStartMobility, MeshMachine::TNoTag) |
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// Attempt to start mobility activity on the meta plane |
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NODEACTIVITY_ENTRY(KNoTag, MobilityCprStates::TSendStartMobility, MobilityCprStates::TAwaitingMobilityStartedOrError, MeshMachine::TNoTagOrErrorTag) |
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// Success - complete the IPC client |
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THROUGH_NODEACTIVITY_ENTRY(KNoTag, CMobilityActivity::TCompleteMobilityClient, TTag<CMobilityActivity::KWaitForMobility>) |
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//<BEGIN> MAIN LOOP **************** |
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//Awaiting mobility triggers, which can either be: |
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//(1) TMigrationNotification (PreferredCarrierAvailable) coming from the control provider (presumably as a response to changing availability) |
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//(2) TMigrationRejected (NewCarrierRejected) coming from the control client (who's presumably not content with the currently offered carrier). |
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//(3) TError coming from the control provider in response to the previous rejection. The client rejected the current bearer, but there are no more bearers to offer. |
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NODEACTIVITY_ENTRY(CMobilityActivity::KWaitForMobility, MeshMachine::TDoNothing, MobilityCprStates::TAwaitingNewCarrierOrErrorOrRelayAndConsumeCurrentCarrierRejected, CMobilityActivity::TStartHandshakeOrErrorTagBlockedByClientNotReady) |
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// Notify the ESock client that a preferred carrier is available and await the client to respond |
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// The response may be: |
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// (1) TCFMobilityProvider::TMigrationRequested - proceed with the migration - the tuple will jump (with KNoTag) to await for the control provider to supply the new bearer. |
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// (2) TCFMobilityProvider::TMigrationRejected - abort the migration - the tuple will jump (with KWaitForMobility | EBackaward) back to awaiting for the preferred bearer. |
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// Note that TAwaitAndRelayMigrationRequestedOrMigrationRejected does the job of forwarding both messages to the control provider. |
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NODEACTIVITY_ENTRY(CMobilityActivity::KStartHandshake, CMobilityActivity::TNotifyClientPreferredCarrierAvailable, MobilityCprStates::TAwaitAndRelayMigrationRequestedOrMigrationRejected, CMobilityActivity::TNoTagOrWaitForMobilityBackwards) |
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//We've just told the control provider (see above: TAwaitAndRelayMigrationRequested...) that the offered carrier has been accepted - the client is requesting migration. |
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//The control provider may respond threefold: |
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//(1) TMigrationComplete - Proceed with the migration - the tuple will jump (with KNoTag) to starting of the bearer; |
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//(2) TMigrationNotification - offer another bearer (if the current one became out of date) - the tuple will jump back to the processing of the new bearer |
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//(3) TError - abort mobility if the current bearer is out of date and there are no more bearers to offer - the tuple will jump to the KErrorTag tuple who will decide what kind of error it is. |
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NODEACTIVITY_ENTRY(KNoTag, MeshMachine::TDoNothing, MobilityCprStates::TAwaitingMigrationCompleteOrNewCarrierOrError, MobilityCprStates::TNoTagOrStartHandshakeBackwardsOrError) |
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THROUGH_NODEACTIVITY_ENTRY(KErrorTag, CMobilityActivity::TCompleteMobilityClient, MeshMachine::TTag<CMobilityActivity::KWaitForMobility|EBackward>) |
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// Start the new connection |
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NODEACTIVITY_ENTRY(KNoTag, CoreNetStates::TStartServiceProvider, MobilityCprStates::TAwaitingStartedOrError, CMobilityActivity::TNoTagOrErrorTagBlockedByClientNotReady) |
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NODEACTIVITY_ENTRY(KErrorTag, TSendErrorRecoveryReq, MeshMachine::TAwaitingErrorRecoveryResponseOrError, CMobilityActivity::TNoTagBackwardsOrRecoverableErrorOrErrorBlockedByClientNotReady) |
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97 |
|
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//If the bearer fails to start, the can be another bearer available, so we need to notify the control provider in case it can offer one. |
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//This node does that by rejecting the current bearer. |
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THROUGH_NODEACTIVITY_ENTRY(CoreStates::KRecoverableErrorTag, MobilityCprStates::TSendMigrationRejected, TTag<CMobilityActivity::KWaitForMobility|EBackward>) |
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THROUGH_NODEACTIVITY_ENTRY(KErrorTag, CMobilityActivity::TCompleteMobilityClient, MeshMachine::TTag<CMobilityActivity::KWaitForMobility|EBackward>) |
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102 |
|
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NODEACTIVITY_ENTRY(KNoTag, CMobilityActivity::TNotifyClientNewCarrierActive, MobilityCprStates::TAwaitAndRelayMigrationAcceptedOrMigrationRejected, MeshMachine::TTag<CMobilityActivity::KWaitForMobility|EBackward>) |
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//<END> MAIN LOOP ************** |
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105 |
|
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NODEACTIVITY_END() |
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} // namespace CprMobilityActivity |
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|
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namespace MobilityCprActivities |
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{ |
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DEFINE_EXPORT_ACTIVITY_MAP(mobilityCprActivities) |
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ACTIVITY_MAP_ENTRY(CprMobilityActivity, MobilityCprMobility) |
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ACTIVITY_MAP_END_BASE(CprActivities, coreCprActivities) |
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} |
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|
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// |
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// CMobilityActivity |
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CMobilityActivity::CMobilityActivity(const MeshMachine::TNodeActivity& aActivitySig, MeshMachine::AMMNodeBase& aNode) |
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: MeshMachine::CNodeRetryActivity(aActivitySig, aNode) |
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{ |
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__ASSERT_DEBUG(static_cast<CMobilityConnectionProvider&>(iNode).iMobilityActivity == NULL, User::Panic(KCoreMobileCprPanic, KPanicActivity)); |
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} |
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|
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CMobilityActivity::~CMobilityActivity() |
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{ |
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//This pointer becomes invalid now, clear if still set. |
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static_cast<CMobilityConnectionProvider&>(iNode).iMobilityActivity = NULL; |
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CCommsApiExtResponder::Complete(iResponder, Error() ? Error() : KErrAbort); //Safe if NULL |
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SetError(KErrNone); |
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} |
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|
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MeshMachine::CNodeActivityBase* CMobilityActivity::NewL(const MeshMachine::TNodeActivity& aActivitySig, MeshMachine::AMMNodeBase& aNode) |
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{ |
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CMobilityActivity* self = new(ELeave) CMobilityActivity(aActivitySig, aNode); |
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return self; |
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} |
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|
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void CMobilityActivity::SetResponder(ESock::CCommsApiExtResponder& aResponder) |
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{ |
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__ASSERT_DEBUG(iResponder==NULL, User::Panic(KSpecAssert_ESockMbCrCPRAct, 7)); |
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__ASSERT_DEBUG(&aResponder, User::Panic(KSpecAssert_ESockMbCrCPRAct, 8)); |
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iResponder = &aResponder; |
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|
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//CMobilityActivity::TMobilityClientNotReadyMutex may have CMobilityActivity await for |
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//iResponder to pop up and if it is waiting, we need to signal it. |
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TNodeNullContext context(iNode, this); |
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Signal(context); |
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} |
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|
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TBool CMobilityActivity::TMobilityClientNotReadyMutex::IsBlocked(MeshMachine::TNodeContextBase& aContext) |
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{ |
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__ASSERT_DEBUG(aContext.iNodeActivity, User::Panic(KCoreMobileCprPanic, KPanicNoActivity)); |
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CMobilityActivity& activity = static_cast<CMobilityActivity&>(*aContext.iNodeActivity); |
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return activity.iResponder? EFalse : ETrue; |
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} |
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|
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//Cpr::CMobilityActivity has no originators |
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void CMobilityActivity::StartL(TNodeContextBase& aContext, const Messages::XNodePeerId& aOriginator, const TStateTriple& aFirst) |
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{ |
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//This activity does not support multiple clients. Any subsequent client should be completed with KErrNotSupported |
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//from CMobilityConnectionProvider::OpenExtensionInterface(). |
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__ASSERT_DEBUG(iOriginators.Count()==0, User::Panic(KSpecAssert_ESockMbCrCPRAct, 1)); |
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|
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MeshMachine::CNodeRetryActivity::StartL(aContext, aOriginator, aFirst); |
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|
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TCFMobilityProvider::TStartMobility& msg = message_cast<TCFMobilityProvider::TStartMobility>(aContext.iMessage); |
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iResponder = static_cast<CCommsApiExtResponder*>(msg.iPtr); |
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iClientId = msg.iValue; |
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__ASSERT_DEBUG(msg.iValue != 0, User::Panic(KSpecAssert_ESockMbCrCPRAct, 2)); //Client id must be valid here. |
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|
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//Set a pointer to the mobility activity in the node on which it's running |
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__ASSERT_DEBUG(static_cast<CMobilityConnectionProvider&>(iNode).iMobilityActivity == NULL, User::Panic(KSpecAssert_ESockMbCrCPRAct, 3)); |
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static_cast<CMobilityConnectionProvider&>(iNode).iMobilityActivity = this; |
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} |
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|
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void CMobilityActivity::Cancel(TNodeContextBase& aContext) |
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{ |
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RNodeInterface* cp = iNode.GetFirstClient<TDefaultClientMatchPolicy>(TClientType(TCFClientType::ECtrlProvider)); |
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__ASSERT_DEBUG(cp, User::Panic(KSpecAssert_ESockMbCrCPRAct, 4)); //We are a Cpr, must exist. |
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//PostedTo() could be our service provider or possibly other peer |
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if (PostedToPeer() != cp) |
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{ |
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cp->PostMessage(TNodeCtxId(ActivityId(), iNode.Id()), |
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TEBase::TCancel().CRef()); |
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} |
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MeshMachine::CNodeRetryActivity::Cancel(aContext); //Send TCancel to iPostedTo |
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} |
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|
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191 |
|
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DEFINE_SMELEMENT(CMobilityActivity::TNoTagBackwardsOrRecoverableErrorOrError, NetStateMachine::MStateFork, CMobilityActivity::TContext) |
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TInt CMobilityActivity::TNoTagBackwardsOrRecoverableErrorOrError::TransitionTag() |
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{ |
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if (iContext.iMessage.IsMessage<TEErrorRecovery::TErrorRecoveryResponse>()) |
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{ |
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TErrResponse& resp = message_cast<TEErrorRecovery::TErrorRecoveryResponse>(iContext.iMessage).iErrResponse; |
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if (resp.iAction == TErrResponse::ERetry) |
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{ |
28
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iContext.Activity()->SetError(KErrNone); |
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return KNoTag | NetStateMachine::EBackward; |
0
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} |
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else if (resp.iAction == TErrResponse::EPropagate || resp.iError == KErrCancel) |
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{ |
2
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if (resp.iError != KErrNone) |
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{ |
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//The activity is already errored. The errored state needs to be reset first. |
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iContext.Activity()->SetError(KErrNone); |
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iContext.Activity()->SetError(resp.iError); |
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} |
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|
0
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return KErrorTag; |
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} |
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else if (resp.iAction == TErrResponse::EIgnore) // and or iError is KErrCancel |
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{ |
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//TODO RZ: This looks inappropriate. EIgnore and EPropagate flags are not |
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//really complimentary. They're simply invalid in soem scenarios. |
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//Here we use ignore to an activity that attempted error recovery, |
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//it technically cannot ignore the error. It will propagate it back |
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//to the MCPR (and not to the client) by rejecting the current bearer. |
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//It feels thought clearing the error doesn't belong here. It probably |
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//belongs to the error activity. |
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iContext.Activity()->SetError(KErrNone); |
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return CoreStates::KRecoverableErrorTag; |
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} |
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} |
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return KNoTag; |
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} |
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|
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|
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DEFINE_SMELEMENT(CMobilityActivity::TNoTagOrWaitForMobilityBackwards, NetStateMachine::MStateFork, CMobilityActivity::TContext) |
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TInt CMobilityActivity::TNoTagOrWaitForMobilityBackwards::TransitionTag() |
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233 |
{ |
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if(iContext.iMessage.IsMessage<TCFMobilityProvider::TMigrationRequested>()) |
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{ |
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return KNoTag; |
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} |
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else |
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239 |
{ |
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__ASSERT_DEBUG(iContext.iMessage.IsMessage<TCFMobilityProvider::TMigrationRejected>(), User::Panic(KSpecAssert_ESockMbCrCPRAct, 6)); |
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return CMobilityActivity::KWaitForMobility|EBackward; |
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} |
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} |
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|
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|
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//Transitions |
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|
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DEFINE_SMELEMENT(CMobilityActivity::TCompleteMobilityClient, NetStateMachine::MStateTransition, CMobilityActivity::TContext) |
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void CMobilityActivity::TCompleteMobilityClient::DoL() |
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{ |
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__ASSERT_DEBUG(iContext.iNodeActivity, User::Panic(KCoreMobileCprPanic, KPanicNoActivity)); |
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CMobilityActivity& activity = static_cast<CMobilityActivity&>(*iContext.iNodeActivity); |
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CCommsApiExtResponder::Complete(activity.iResponder, activity.Error()); |
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|
254 |
|
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//There is only one way to kill the mobility activity and it is by the client closing the API extension. |
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//This will be manifested with KErrCancel. |
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if (activity.Error() == KErrCancel) |
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{ |
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activity.SetIdle(); |
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} |
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activity.SetError(KErrNone); //The error has been handled |
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activity.ClearPostedTo(); |
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} |
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|
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DEFINE_SMELEMENT(CMobilityActivity::TNotifyClientPreferredCarrierAvailable, NetStateMachine::MStateTransition, CMobilityActivity::TContext) |
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void CMobilityActivity::TNotifyClientPreferredCarrierAvailable::DoL() |
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{ |
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__ASSERT_DEBUG(iContext.iNodeActivity, User::Panic(KCoreMobileCprPanic, KPanicNoActivity)); |
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CMobilityActivity& activity = static_cast<CMobilityActivity&>(*iContext.iNodeActivity); |
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TCFMobilityControlClient::TMigrationNotification& msg = message_cast<TCFMobilityControlClient::TMigrationNotification>(iContext.iMessage); |
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|
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activity.iCurrentAp = msg.iValue1; |
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activity.iPreferredAp = msg.iValue2; |
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activity.iIsUpgrade = msg.iValue3; |
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|
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CCommsMobilitySrvResp* responder = static_cast<CCommsMobilitySrvResp*>(activity.iResponder); |
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activity.iResponder = NULL; |
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CCommsMobilitySrvResp::PreferredCarrierAvailable(responder, TAccessPointInfo(activity.iCurrentAp), TAccessPointInfo(activity.iPreferredAp), activity.iIsUpgrade, EFalse); |
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activity.ClearPostedTo(); |
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} |
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|
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|
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DEFINE_SMELEMENT(CMobilityActivity::TNotifyClientNewCarrierActive, NetStateMachine::MStateTransition, CMobilityActivity::TContext) |
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void CMobilityActivity::TNotifyClientNewCarrierActive::DoL() |
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284 |
{ |
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__ASSERT_DEBUG(iContext.iNodeActivity, User::Panic(KCoreMobileCprPanic, KPanicNoActivity)); |
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CMobilityActivity& activity = static_cast<CMobilityActivity&>(*iContext.iNodeActivity); |
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CCommsMobilitySrvResp* responder = static_cast<CCommsMobilitySrvResp*>(activity.iResponder); |
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activity.iResponder = NULL; |
dfb7c4ff071f
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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CCommsMobilitySrvResp::NewCarrierActive(responder, TAccessPointInfo(activity.iPreferredAp), EFalse); |
dfb7c4ff071f
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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activity.ClearPostedTo(); |
dfb7c4ff071f
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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291 |
} |
dfb7c4ff071f
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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292 |
|
dfb7c4ff071f
Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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293 |