datacommsserver/esockserver/ssock/ss_flowrequeststates.cpp
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Tue, 31 Aug 2010 16:25:36 +0300
branchRCL_3
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parent 66 cbb19216b74d
child 70 b564fb5fd78b
permissions -rw-r--r--
Revision: 201035 Kit: 201035
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// Copyright (c) 1997-2009 Nokia Corporation and/or its subsidiary(-ies).
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// All rights reserved.
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// This component and the accompanying materials are made available
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// under the terms of "Eclipse Public License v1.0"
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// which accompanies this distribution, and is available
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// at the URL "http://www.eclipse.org/legal/epl-v10.html".
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//
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// Initial Contributors:
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// Nokia Corporation - initial contribution.
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//
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// Contributors:
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//
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// Description:
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//
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#include <comms-infras/ss_log.h>
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#include <comms-infras/ss_coreprstates.h>
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#include "ss_flowrequest.h"
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#include "ss_flowrequeststates.h"
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#include <comms-infras/ss_mcprnodemessages.h>
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#include <cs_subconparams.h>
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#include <comms-infras/ss_nodemessages_dataclient.h>
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#include <comms-infras/ss_nodemessages_internal_esock.h>
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#include <comms-infras/ss_nodemessages_serviceprovider.h>
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#include <comms-infras/ss_nodemessages_selector.h>
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#include <elements/nm_messages_peer.h>
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#include <comms-infras/ss_protocolparameterset.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_ESockSSockFlwRqS, "ESockSSockFlwRqS");
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#endif
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using namespace ESock;
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using namespace CorePanics;
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using namespace FlowRequestStates;
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using namespace Messages;
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using namespace MeshMachine;
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#ifdef _DEBUG
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_LIT (KCFlowRequestPanic,"FlowRequestPanic");
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#endif
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//
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//Implicit and common
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DEFINE_SMELEMENT(FlowRequestStates::TAwaitingImplicitFlowRequest, NetStateMachine::MState, FlowRequestStates::TContext)
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TBool FlowRequestStates::TAwaitingImplicitFlowRequest::Accept()
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	{
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	TCFInternalEsock::TFlowRequest* flowReqMsg = message_cast<TCFInternalEsock::TFlowRequest>(&iContext.iMessage);
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	return flowReqMsg && flowReqMsg->iFlowParams.iFlowRequestType == TFlowParams::EImplicit;
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	}
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DEFINE_SMELEMENT(FlowRequestStates::TAwaitingConnFlowRequest, NetStateMachine::MState, FlowRequestStates::TContext)
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TBool FlowRequestStates::TAwaitingConnFlowRequest::Accept()
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	{
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	TCFInternalEsock::TFlowRequest* flowReqMsg = message_cast<TCFInternalEsock::TFlowRequest>(&iContext.iMessage);
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	return flowReqMsg && flowReqMsg->iFlowParams.iFlowRequestType == TFlowParams::EExplicitConnection;
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	}
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DEFINE_SMELEMENT(FlowRequestStates::TAwaitingSubConnFlowRequest, NetStateMachine::MState, FlowRequestStates::TContext)
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TBool FlowRequestStates::TAwaitingSubConnFlowRequest::Accept()
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	{
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	TCFInternalEsock::TFlowRequest* flowReqMsg = message_cast<TCFInternalEsock::TFlowRequest>(&iContext.iMessage);
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	return flowReqMsg && flowReqMsg->iFlowParams.iFlowRequestType == TFlowParams::EExplicitSubConnection;
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	}
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DEFINE_SMELEMENT(FlowRequestStates::TRequestCSRCreation, NetStateMachine::MStateTransition, FlowRequestStates::TImplicitContext)
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void FlowRequestStates::TRequestCSRCreation::DoL()
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	{
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	//const TImplicitContext& ctx = iContext;
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	__ASSERT_DEBUG(iContext.iNodeActivity, User::Panic(KCFlowRequestPanic, KPanicNoActivity));
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	__ASSERT_DEBUG(iContext.Node().iCSR.IsNull(), User::Panic(KCFlowRequestPanic, KPanicExpectedNoCSR));
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	iContext.iNodeActivity->PostRequestTo(iContext.Node().iTierManagerFC,
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		TCFInternalEsock::TCreateCSR(iContext.Node().iTierId).CRef(), EFalse);
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	}
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DEFINE_SMELEMENT(FlowRequestStates::TSelectMetaPlane, NetStateMachine::MStateTransition, FlowRequestStates::TImplicitContext)
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void FlowRequestStates::TSelectMetaPlane::DoL()
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	{
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	__ASSERT_DEBUG(iContext.iNodeActivity, User::Panic(KCFlowRequestPanic, KPanicNoActivity));
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	__ASSERT_DEBUG(iContext.Node().iCSR.IsNull(), User::Panic(KCFlowRequestPanic, KPanicExpectedNoCSR));
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	iContext.Node().iCSR = message_cast<TCFInternalEsock::TCSRCreated>(iContext.iMessage).iNodeId;
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	__ASSERT_DEBUG(!iContext.Node().iCSR.IsNull(), User::Panic(KCFlowRequestPanic, KPanicNoCSR));
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    TSelectionPrefs prefs(TSelectionPrefs::ERequestCommsBinder); //Always get the same default connection (legacy -> on IpProto layer)
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	iContext.iNodeActivity->PostRequestTo(iContext.Node().iCSR, TCFSelector::TSimpleSelect(prefs).CRef());
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	}
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DEFINE_SMELEMENT(FlowRequestStates::TJoinReceivedSCpr, NetStateMachine::MStateTransition, FlowRequestStates::TImplicitContext)
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void FlowRequestStates::TJoinReceivedSCpr::DoL()
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	{
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	__ASSERT_DEBUG(iContext.iNodeActivity, User::Panic(KCFlowRequestPanic, KPanicNoActivity));
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	__ASSERT_DEBUG(iContext.iPeer == iContext.Node().ServiceProvider(), User::Panic(KCFlowRequestPanic, KPanicExpectedNoServiceProvider));
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	TCFServiceProvider::TCommsBinderResponse& br = message_cast<TCFServiceProvider::TCommsBinderResponse>(iContext.iMessage);
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    iContext.Node().AddClientL(br.iNodeId, TClientType(TCFClientType::EServProvider, TCFClientType::EDefault));
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    iContext.iNodeActivity->PostRequestTo(br.iNodeId, TCFServiceProvider::TJoinRequest(iContext.NodeId(),
0
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		TClientType(TCFClientType::ECtrl)).CRef());
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	}
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   103
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DEFINE_SMELEMENT(FlowRequestStates::TRequestCommsBinderFromSCpr, NetStateMachine::MStateTransition, FlowRequestStates::TContext)
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void FlowRequestStates::TRequestCommsBinderFromSCpr::DoL()
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	{
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	__ASSERT_DEBUG(iContext.iNodeActivity, User::Panic(KCFlowRequestPanic, KPanicNoActivity));
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	RNodeInterface* scpr = iContext.Node().GetFirstClient<TDefaultClientMatchPolicy>(TClientType(TCFClientType::EServProvider, TCFClientType::EDefault));
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   109
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	__ASSERT_DEBUG(scpr, User::Panic(KCFlowRequestPanic, KPanicNoServiceProvider));
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  	iContext.iNodeActivity->PostRequestTo(*scpr, TCFServiceProvider::TCommsBinderRequest(TSubConnOpen::ECreateNew, iContext.Node().iFlowParameters).CRef());
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	}
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   113
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DEFINE_SMELEMENT(FlowRequestStates::TRemoveRequestor, NetStateMachine::MStateTransition, FlowRequestStates::TContext)
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void FlowRequestStates::TRemoveRequestor::DoL()
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	{
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	__ASSERT_DEBUG(iContext.iNodeActivity, User::Panic(KCFlowRequestPanic, KPanicNoActivity));
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	iContext.iNodeActivity->RemoveOriginator(0);
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	//Remove the orignator client added to the list
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	RNodeInterface* requestor = iContext.Node().GetFirstClient<TDefaultClientMatchPolicy>(TClientType(TCFClientType::ECtrl));
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	if(requestor)
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		{
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//TODO bug fix 1245412 DEF122892 cant be applied - investigate 1221893 & 1245412 & te_rsubconnectionsuite.script crashes		TInt atFound = iContext.Activity()->FindOriginator(*requestor);
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		iContext.Node().RemoveClient(requestor->RecipientId(), iContext);
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//TODO bug fix cant be applied - investigate		if(atFound != KErrNotFound)
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//			{
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//			iContext.Activity()->RemoveOriginator(atFound);
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//			}
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		}
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	}
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DEFINE_SMELEMENT(FlowRequestActivities::CFlowRequestActivity::TStoreFlowParams, NetStateMachine::MStateTransition, TContext)
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void FlowRequestActivities::CFlowRequestActivity::TStoreFlowParams::DoL()
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	{
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	// Make sure we are being executed in the context of a node that has an activity running
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	__ASSERT_DEBUG(iContext.iNodeActivity, User::Panic(KCFlowRequestPanic, KPanicNoActivity));
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	// Fetch our message and create a bundle of flow parameters from it
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	TCFInternalEsock::TFlowRequest& flowRequestMessage = message_cast<TCFInternalEsock::TFlowRequest>(iContext.iMessage);
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	CFlowRequestParameters* params = CFlowRequestParameters::NewL();
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	CleanupStack::PushL(params);
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	params->SetFlowParams(flowRequestMessage.iFlowParams);
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	RCFParameterFamilyBundle bundle;
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	bundle.CreateL();
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	CleanupClosePushL(bundle);
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    RParameterFamily family = bundle.CreateFamilyL(KFlowParametersFamily);
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	family.AddParameterSetL (params, RParameterFamily::ERequested);
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	// Save the flow parameter bundle in the activity
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	__ASSERT_DEBUG(iContext.Node().iFlowParameters.IsNull(), User::Panic(KSpecAssert_ESockSSockFlwRqS, 1));
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	iContext.Node().iFlowParameters.Open(bundle);
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	// Cleanup
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	CleanupStack::Pop(&bundle);
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	CleanupStack::Pop(params);
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	}
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14
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DEFINE_SMELEMENT(FlowRequestActivities::CFlowRequestActivity::TSendBindToComplete, NetStateMachine::MStateTransition, TContext)
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void FlowRequestActivities::CFlowRequestActivity::TSendBindToComplete::DoL()
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    {
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    __ASSERT_DEBUG(iContext.iNodeActivity, User::Panic(KCFlowRequestPanic, KPanicNoActivity));
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    CFlowRequestActivity& activity = static_cast<CFlowRequestActivity&>(*iContext.iNodeActivity);
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    __ASSERT_DEBUG(!activity.iBindToSender.IsNull(), User::Panic(KSpecAssert_ESockSSockFlwRqS, 2)); 
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    RClientInterface::OpenPostMessageClose(iContext.Node().Id(), activity.iBindToSender, TCFDataClient::TBindToComplete().CRef());
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    activity.iBindToSender.SetNull();
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    }
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DEFINE_SMELEMENT(FlowRequestActivities::CFlowRequestActivity::TAwaitingBindTo, NetStateMachine::MState, TContext)
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TBool FlowRequestActivities::CFlowRequestActivity::TAwaitingBindTo::Accept()
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    {
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    TBool accept(EFalse);     
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    if(iContext.iMessage.IsMessage<TCFDataClient::TBindTo>()) 
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        { 
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        // store the node to which we send the response later on.
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        __ASSERT_DEBUG(iContext.iNodeActivity, User::Panic(KCFlowRequestPanic, KPanicNoActivity));
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        CFlowRequestActivity& activity = static_cast<CFlowRequestActivity&>(*iContext.iNodeActivity);
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        __ASSERT_DEBUG(activity.iBindToSender.IsNull(), User::Panic(KSpecAssert_ESockSSockFlwRqS, 3));
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        activity.iBindToSender = iContext.iSender;
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        accept = ETrue;
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        } 
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    return accept;
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    }
0
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DEFINE_SMELEMENT(FlowRequestStates::TSendNoBearer, NetStateMachine::MStateTransition, FlowRequestStates::TContext)
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void FlowRequestStates::TSendNoBearer::DoL()
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	{
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	// Make sure we are being executed in the context of a node that has an activity running
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	__ASSERT_DEBUG(iContext.iNodeActivity, User::Panic(KCFlowRequestPanic, KPanicNoActivity));
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	// Fetch the subconnection. It has been designated as our control provider
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	RNodeInterface* subconn = iContext.Node().GetFirstClient<TDefaultClientMatchPolicy>(
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		TClientType(TCFClientType::ECtrlProvider, TCFClientType::EDefault));
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	__ASSERT_DEBUG(subconn != NULL, User::Panic(KCFlowRequestPanic, KPanicNoControlProvider));
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	// Send TNoBearer to the subconnection
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	iContext.iNodeActivity->PostRequestTo(*subconn,
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		TCFControlProvider::TNoBearer(iContext.Node().iFlowParameters).CRef());
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	}
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DEFINE_SMELEMENT(FlowRequestStates::TJoinSubConnection, NetStateMachine::MStateTransition, FlowRequestStates::TContext)
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void FlowRequestStates::TJoinSubConnection::DoL()
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	{
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	// Make sure we are being executed in the context of a node that has an activity running
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	__ASSERT_DEBUG(iContext.iNodeActivity, User::Panic(KCFlowRequestPanic, KPanicNoActivity));
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	// Fetch the subconnection. It has been designated as our control provider
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	RNodeInterface* subconn = iContext.Node().GetFirstClient<TDefaultClientMatchPolicy>(
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		TClientType(TCFClientType::ECtrlProvider, TCFClientType::EDefault));
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	__ASSERT_DEBUG(subconn != NULL, User::Panic(KCFlowRequestPanic, KPanicNoControlProvider));
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	// Join the subconnection
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	iContext.iNodeActivity->PostRequestTo(*subconn,
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		TCFPeer::TJoinRequest(
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			iContext.Node().Id(), TClientType(TCFClientType::EData)).CRef());
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	}
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DEFINE_SMELEMENT(FlowRequestStates::TLeaveSubConnection, NetStateMachine::MStateTransition, FlowRequestStates::TContext)
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void FlowRequestStates::TLeaveSubConnection::DoL()
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	{
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	// Make sure we are being executed in the context of a node that has an activity running
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	__ASSERT_DEBUG(iContext.iNodeActivity, User::Panic(KCFlowRequestPanic, KPanicNoActivity));
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	// Fetch the subconnection. Its our control provider and must be present
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	RNodeInterface* subconn = iContext.Node().GetFirstClient<TDefaultClientMatchPolicy>(
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		TClientType(TCFClientType::ECtrlProvider, TCFClientType::EDefault));
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	__ASSERT_DEBUG(subconn != NULL, User::Panic(KCFlowRequestPanic, KPanicNoControlProvider));
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	// Send the leave request to our subconnection
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	iContext.iNodeActivity->PostRequestTo(*subconn, TEPeer::TLeaveRequest().CRef());
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	subconn->SetFlags(TCFClientType::ELeaving);
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	}
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DEFINE_SMELEMENT(FlowRequestStates::TForwardBindToMsgToOriginator, NetStateMachine::MStateTransition, FlowRequestStates::TContext)
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void FlowRequestStates::TForwardBindToMsgToOriginator::DoL()
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	{
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	//This is assumed to be executed as a direct response to TCommsBinderResponse
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	__ASSERT_DEBUG(iContext.iNodeActivity, User::Panic(KCFlowRequestPanic, KPanicNoActivity));
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	// Create and send the comms binder from the incoming one
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	TCFDataClient::TBindTo& incomingBindTo = message_cast<TCFDataClient::TBindTo>(iContext.iMessage);
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    iContext.iNodeActivity->PostToOriginators(TCFDataClient::TBindTo(incomingBindTo.iNodeId).CRef());
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    iContext.iNodeActivity->ClearPostedTo();
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	}
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//
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//Cpr specific
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DEFINE_SMELEMENT(FlowRequestStates::TJoinCpr, NetStateMachine::MStateTransition, FlowRequestStates::TContext)
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void FlowRequestStates::TJoinCpr::DoL()
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	{
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	__ASSERT_DEBUG(iContext.iNodeActivity, User::Panic(KCFlowRequestPanic, KPanicNoActivity));
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	RNodeInterface* cpr = iContext.Node().GetFirstClient<TDefaultClientMatchPolicy>(TClientType(TCFClientType::EServProvider));
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	//The sc has been already added
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	__ASSERT_DEBUG(cpr != NULL, User::Panic(KCFlowRequestPanic, KPanicNoServiceProvider));
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	//Join the service provider
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	iContext.iNodeActivity->PostRequestTo(*cpr, TCFServiceProvider::TJoinRequest(iContext.NodeId(), TClientType(TCFClientType::ECtrl)).CRef());
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	}
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//
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//SCpr specific
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DEFINE_SMELEMENT(FlowRequestStates::TJoinSCpr, NetStateMachine::MStateTransition, FlowRequestStates::TContext)
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void FlowRequestStates::TJoinSCpr::DoL()
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	{
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	__ASSERT_DEBUG(iContext.iNodeActivity, User::Panic(KCFlowRequestPanic, KPanicNoActivity));
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	RNodeInterface* scpr = iContext.Node().GetFirstClient<TDefaultClientMatchPolicy>(TClientType(TCFClientType::EServProvider, TCFClientType::EDefault));
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	//The sc has been already added
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	__ASSERT_DEBUG(scpr != NULL, User::Panic(KCFlowRequestPanic, KPanicNoServiceProvider));
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	//Join the service provider
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	iContext.iNodeActivity->PostRequestTo(*scpr, TCFServiceProvider::TJoinRequest(iContext.NodeId(), TClientType(TCFClientType::ECtrl)).CRef());
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	}
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14
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DEFINE_SMELEMENT(FlowRequestStates::TSendClientLeavingAndRemoveControlProvider, NetStateMachine::MStateTransition, FlowRequestStates::TContext)
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void FlowRequestStates::TSendClientLeavingAndRemoveControlProvider::DoL()
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	{
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   	TClientIter<TDefaultClientMatchPolicy> iter = iContext.Node().GetClientIter<TDefaultClientMatchPolicy>(TClientType(TCFClientType::ECtrlProvider));
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   	RNodeInterface* cl = iter[0];
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   	//It is perfectly possible that there is no Control Provider at all.
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   	if (cl)
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   		{
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		__ASSERT_DEBUG(iContext.iNodeActivity, User::Panic(KCFlowRequestPanic, KPanicNoActivity));
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		cl->PostMessage(TNodeCtxId(iContext.ActivityId(), iContext.NodeId()), TEChild::TLeft().CRef());
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   		iContext.Node().RemoveClient(cl->RecipientId(),iContext);
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   		__ASSERT_DEBUG(iter[1] == NULL, User::Panic(KCFlowRequestPanic, KPanicNoControlProvider)); //But it is not possible to have two Control Providers!
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   		}
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	}