--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/realtimenetprots/sipfw/SIP/TransactionUser/src/CancelUAC.cpp	Tue Feb 02 01:03:15 2010 +0200
@@ -0,0 +1,144 @@
+// 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:
+// Name          : CancelUAC.cpp
+// Part of       : TransactionUser
+// Version       : SIP/6.0
+//
+
+
+
+#include "siperr.h"
+#include "SipAssert.h"
+#include "siprequest.h"
+#include "sipfromheader.h"
+#include "sipstrings.h"
+#include "sipstrconsts.h"
+
+#include "CancelUAC.h"
+#include "InviteUAC.h"
+#include "CTransactionStore.h"
+#include "SIPMessageUtility.h"
+#include "SIPRequestUtility.h"
+
+
+// -----------------------------------------------------------------------------
+// CCancelUAC::NewL
+// -----------------------------------------------------------------------------
+//
+CCancelUAC* CCancelUAC::NewL(CUserAgentCreateParams& aParams,							 
+                             MSipConnectionMgr& aConnectionMgr,                             
+                             MSipUriResolver& aResolver,							 
+							 CSIPSec& aSIPSec,
+							 TUint32 aCSeqNumber)
+	{
+	CCancelUAC* self =
+		new (ELeave) CCancelUAC(aParams, aResolver, aSIPSec, aCSeqNumber);
+	CleanupStack::PushL(self);
+	self->CUserAgent::ConstructL(aConnectionMgr);
+	self->CUserAgentClient::ConstructL();
+	CleanupStack::Pop(self);
+	return self;
+	}
+
+// -----------------------------------------------------------------------------
+// CCancelUAC::CCancelUAC
+// -----------------------------------------------------------------------------
+//
+CCancelUAC::CCancelUAC(CUserAgentCreateParams& aParams,
+					   MSipUriResolver& aResolver,
+					   CSIPSec& aSIPSec,
+					   TUint32 aCSeqNumber) :
+	CNormalUAC(aParams, aResolver, aSIPSec, aCSeqNumber)
+	{
+	}
+
+// -----------------------------------------------------------------------------
+// CCancelUAC::CreateAndSendCancelL
+// -----------------------------------------------------------------------------
+//
+void CCancelUAC::CreateAndSendCancelL(TTransactionId aInviteTaId)
+	{
+	CUserAgent* ua = iTransactionStore.SearchById(aInviteTaId);
+
+	// CTransactionUser has checked aInviteTaId is a TransactionId of an INVITE
+	// client transaction
+	__SIP_ASSERT_LEAVE(ua, KErrNotFound);
+    __SIP_ASSERT_LEAVE(ua->IsInviteUAC(), KErrGeneral);    
+	CInviteUAC& inviteUac = CInviteUAC::Ptr(*ua);
+	__ASSERT_ALWAYS(!inviteUac.IsCanceled(),
+    				User::Leave(KErrSIPInvalidTransactionState));
+
+	CreateCancelRequestL(aInviteTaId, inviteUac);
+	SendCancelRequestL(inviteUac);
+	}
+
+// -----------------------------------------------------------------------------
+// CCancelUAC::CreateCancelRequestL
+// Use Route headers of INVITE, in CANCEL.
+// -----------------------------------------------------------------------------
+//
+void CCancelUAC::CreateCancelRequestL(TTransactionId aInviteTaId,
+									  CInviteUAC& aInviteUac)
+	{
+	__SIP_ASSERT_LEAVE(!iOutgoingMsg, KErrNotFound);
+
+	iOutgoingMsg =
+		CSIPRequest::NewL(SIPStrings::StringF(SipStrConsts::ECancel));
+	CSIPRequest* cancel = static_cast<CSIPRequest*>(iOutgoingMsg);
+
+	iTransactionStore.CopyHeadersToRequestL(aInviteTaId,
+											*cancel,
+											ETrue,  // copy Request-URI
+											ETrue); // copy Via
+	SIPRequestUtility::FillNewMaxForwardsL(*cancel);
+	CheckContactHeadersL(*cancel, cancel->From());	
+	StoreRequestUriL(*cancel);
+
+    aInviteUac.CancelInvite();
+    aInviteUac.CopyRouteHeadersToCancelL(*cancel);
+
+	CopyRouteSetAndRemoteTargetL(aInviteUac);
+	}
+
+// -----------------------------------------------------------------------------
+// CCancelUAC::SendCancelRequestL
+// -----------------------------------------------------------------------------
+//
+void CCancelUAC::SendCancelRequestL(CUserAgentClient& aInviteUac)
+	{
+	__SIP_ASSERT_LEAVE(iOutgoingMsg, KErrNotFound);
+
+    CreateTransactionL();
+
+	// Update CANCEL's and transaction's info
+	UpdateInfoToStoreL(static_cast<CSIPRequest*>(iOutgoingMsg));
+
+	// Obtain the current remote address used by INVITE transaction
+    CopyRemoteAddress(aInviteUac);
+
+	// Don't use SelectNextRemoteAddressL, as CancelUAC's address and transport
+	// are in iRemoteAddr and iTransportProtocol, not in iResolvingResults.
+	CSIPMessageUtility::UpdateViaTransportL(*iOutgoingMsg, iTransportProtocol);
+
+	SendRequestToNetworkL();
+	}
+
+// -----------------------------------------------------------------------------
+// CCancelUAC::Ptr
+// -----------------------------------------------------------------------------
+//
+CCancelUAC& CCancelUAC::Ptr(CUserAgent& aUserAgent)
+	{
+	return static_cast<CCancelUAC&>(aUserAgent);
+	}