--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/realtimenetprots/sipfw/SIP/TransactionUser/src/CancelUAS.cpp	Tue Feb 02 01:03:15 2010 +0200
@@ -0,0 +1,171 @@
+// Copyright (c) 2005-2009 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          : CancelUAS.cpp
+// Part of       : TransactionUser
+// Version       : SIP/4.0
+//
+
+
+
+#include "siperr.h"
+#include "SipAssert.h"
+#include "siptoheader.h"
+#include "siprequest.h"
+#include "sipresponse.h"
+#include "sipstrings.h"
+#include "sipstrconsts.h"
+
+#include "CancelUAS.h"
+#include "InviteUAS.h"
+#include "CTransactionStore.h"
+
+// -----------------------------------------------------------------------------
+// CCancelUAS::NewL
+// -----------------------------------------------------------------------------
+//
+CCancelUAS* CCancelUAS::NewL(CUserAgentCreateParams& aParams,							
+							 MSipConnectionMgr& aConnectionMgr,
+							 MSIPRequestRouter& aRouter,
+                             MSipDialogs& aDialogs)
+	{
+	CCancelUAS* self = new (ELeave) CCancelUAS(aParams, aDialogs, aRouter);
+	CleanupStack::PushL(self);	
+	self->ConstructL(aConnectionMgr);
+	CleanupStack::Pop(self);
+	return self;
+	}
+
+// -----------------------------------------------------------------------------
+// CCancelUAS::CCancelUAS
+// -----------------------------------------------------------------------------
+//
+CCancelUAS::CCancelUAS(CUserAgentCreateParams& aParams,
+					   MSipDialogs& aDialogs,
+					   MSIPRequestRouter& aRouter) :
+	CNormalUAS(aParams, aDialogs, aRouter)
+	{
+	}
+
+// -----------------------------------------------------------------------------
+// CCancelUAS::ConstructL
+// -----------------------------------------------------------------------------
+//
+void CCancelUAS::ConstructL(MSipConnectionMgr& aConnectionMgr)
+	{
+	CUserAgent::ConstructL(aConnectionMgr);
+	CreateTransactionL();
+	}
+
+// -----------------------------------------------------------------------------
+// CCancelUAS::CancelReceivedL
+// Can't cancel ACK or CANCEL. Send 200 to CANCEL before 487 to INVITE. If
+// INVITE UAS has no To tag yet, the To tags of 200 and 487 will differ.
+// -----------------------------------------------------------------------------
+//
+void CCancelUAS::CancelReceivedL(CSIPRequest* aCancel,
+								 const CUserAgentState& aFinalRespSent)
+	{
+	__SIP_ASSERT_LEAVE(aCancel, KErrArgument);
+
+	if (!UpdateTransportProtocol(*aCancel))
+		{
+		// Drop the broken CANCEL
+		delete aCancel;
+		Stop(KErrNone);
+		return;
+		}
+
+    StoreToTag(*aCancel);
+
+	TInt responseCode = 0;
+	RStringF reasonPhrase;
+	if (CheckReceivedRequest(*aCancel, responseCode, reasonPhrase))
+		{
+		CUserAgentServer* uas =
+            iTransactionStore.SearchUasToCancel(*aCancel, *this);
+		if (uas)
+			{
+			iTransportParams = uas->TransportParams();
+			RStringF method =
+                iTransactionStore.RequestMethod(uas->TransactionId());
+
+			if (method == SIPStrings::StringF(SipStrConsts::EAck) ||
+                method == SIPStrings::StringF(SipStrConsts::ECancel))
+				{                
+				SendErrorResponseL(400,
+					SIPStrings::StringF(SipStrConsts::EPhraseBadRequest),
+					aFinalRespSent);
+				}
+			else
+				{
+				Send200L(aFinalRespSent, uas->ToTag());
+				// If INVITE UAS has sent 2xx, it no longer has transaction
+				if (method == SIPStrings::StringF(SipStrConsts::EInvite))
+					{
+					CInviteUAS::Ptr(*uas).CancelInviteL();
+					}
+				}
+			}
+		else
+			{
+			SendErrorResponseL(481,
+				SIPStrings::StringF(
+					SipStrConsts::EPhraseCallTransactionDoesNotExist),
+                aFinalRespSent);
+			}
+		}
+	else
+		{
+		__SIP_ASSERT_LEAVE(responseCode >= 300 && responseCode < 700,
+                           KErrSIPMalformedMessage);
+
+		SendErrorResponseL(responseCode, reasonPhrase, aFinalRespSent);		
+		}
+
+	delete aCancel;
+	}
+
+// -----------------------------------------------------------------------------
+// CCancelUAS::Send200L
+// If the canceled transaction has a To-tag, it's put in the response to CANCEL
+// -----------------------------------------------------------------------------
+//
+void CCancelUAS::Send200L(const CUserAgentState& aFinalRespSent,
+						  RStringF aToTag)
+    {    
+	CSIPResponse* resp =
+		CSIPResponse::NewLC(200, SIPStrings::StringF(SipStrConsts::EPhraseOk));
+	FillResponseL(*resp);
+
+	if (aToTag.DesC().Length() > 0)
+		{
+        CSIPToHeader* to = resp->To();
+        __SIP_ASSERT_LEAVE(to != NULL, KErrSIPMalformedMessage);
+
+		to->SetParamL(SIPStrings::StringF(SipStrConsts::ETag), aToTag);
+		}
+
+	ChangeState(aFinalRespSent);
+	SendResponseToTransactionL(resp);
+	CleanupStack::Pop(resp);
+	}
+
+// -----------------------------------------------------------------------------
+// CCancelUAS::Ptr
+// -----------------------------------------------------------------------------
+//
+CCancelUAS& CCancelUAS::Ptr(CUserAgent& aUserAgent)
+	{
+	return static_cast<CCancelUAS&>(aUserAgent);
+	}