--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/realtimenetprots/sipfw/SIP/Dialogs/src/Early.cpp	Tue Feb 02 01:03:15 2010 +0200
@@ -0,0 +1,193 @@
+// 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          : Early.cpp
+// Part of       : SIPDialogs
+// Version       : SIP/5.0 
+//
+
+
+
+
+#include "siperr.h"
+#include "Early.h"
+#include "MDialogContext.h"
+#include "TransactionItemBase.h"
+#include "SipAssert.h"
+#include "sipresponse.h"
+#include "siprequest.h"
+#include "siptoheader.h"
+#include "sipfromheader.h"
+#include "sipcallidheader.h"
+#include "sipcseqheader.h"
+#include "CSigCompMgr.h"
+#include "sipstrings.h"
+#include "sipstrconsts.h"
+#include "TSIPTransportParams.h"
+
+_LIT8(KEarly, "Early");
+const TUint K100Response = 100;
+
+// -----------------------------------------------------------------------------
+// TEarly::TEarly
+// -----------------------------------------------------------------------------
+//
+TEarly::TEarly (MDialogContext& aDialog,
+                TDialogStateBase& aStateConfirmed,
+	            TDialogStateBase& aStateTerminated)
+ : TDialogStateBase(aDialog),
+   iStateConfirmed(aStateConfirmed),
+   iStateTerminated(aStateTerminated)
+	{
+	}
+
+// -----------------------------------------------------------------------------
+// TEarly::Name
+// -----------------------------------------------------------------------------
+//
+const TDesC8& TEarly::Name () const
+	{
+	return KEarly;
+	}
+
+// -----------------------------------------------------------------------------
+// TEarly::SendL
+// -----------------------------------------------------------------------------
+//
+void TEarly::SendL (TTransactionId& aTransactionId,
+                    CSIPRequest* aRequest,
+                    CTransactionItemBase& aTransactionItem,
+                    CURIContainer& aRemoteTarget)
+	{
+	TSIPTransportParams params(iDialog.TransportParams(KEmptyRegistrationId));
+	params.SetSkipNaptrAndSrv(iDialog.HasRouteSet());
+    aTransactionItem.SendL(params,aTransactionId,KEmptyRegistrationId,
+                           aRequest,aRemoteTarget);
+	}
+
+// -----------------------------------------------------------------------------
+// TEarly::SendL
+// -----------------------------------------------------------------------------
+//
+void TEarly::SendL (CTransactionItemBase& aTransactionItem,
+                    CSIPResponse* aResponse)
+	{
+	TSIPTransportParams params(iDialog.TransportParams(KEmptyRegistrationId));
+	// Check that 2xx response is for correct request
+    if(aResponse->Type() == CSIPResponse::E2XX &&
+       iDialog.FirstTransactionId() == aTransactionItem.Id())
+		{
+		iDialog.ChangeState(iStateConfirmed);
+		}
+    aTransactionItem.SendL(params,aResponse,ETrue);
+	}
+
+// -----------------------------------------------------------------------------
+// TEarly::ReceiveL
+// -----------------------------------------------------------------------------
+//
+void TEarly::ReceiveL (CTransactionItemBase& aTransactionItem, 
+                       CSIPResponse* aResponse)
+	{
+	if (aResponse->IsErrorResponse())
+		{
+        if (iDialog.FirstTransactionId() == aTransactionItem.Id())
+            {
+		    iDialog.TerminateForkedDialogs(aTransactionItem.Id());
+		    iDialog.ChangeState(iStateTerminated);
+            }
+        }
+    else // 100-299 response
+        {
+		if (aResponse->ResponseCode() > K100Response)
+			{
+			iDialog.SetRemoteTagL(aResponse->To());
+			if (aTransactionItem.TargetRefresh())
+				{
+				// Only the final response to the initial transaction 
+				// updates the route-set
+				if (aResponse->Type() == CSIPResponse::E2XX && 
+				    iDialog.FirstTransactionId() == aTransactionItem.Id())
+					{
+					iDialog.SetRouteSetUsingRecordRouteL(
+					    *aResponse, ETrue, KErrSIPInvalidDialogResponse);
+					}
+				iDialog.SetRemoteTargetWithMsgL(*aResponse);
+				}
+            }
+
+		if (aResponse->Type() == CSIPResponse::E2XX)
+			{
+		    if (aTransactionItem.OverlappingRestricted())
+                {
+			    aTransactionItem.SetOverlappingRestricted(EFalse);
+                }
+		    if (iDialog.FirstTransactionId() == aTransactionItem.Id())
+                {
+			    iDialog.ChangeState(iStateConfirmed);
+                }
+            }
+		}
+    PassToOwnerL(aTransactionItem,aResponse);
+	}
+
+// -----------------------------------------------------------------------------
+// TEarly::ReceiveL
+// -----------------------------------------------------------------------------
+//
+void TEarly::ReceiveL (TTransactionId aTransactionId, 
+                       CSIPRequest* aRequest)
+	{
+    CSIPFromHeader* from = aRequest->From();
+    __SIP_ASSERT_LEAVE (from != 0, KErrArgument);
+	if (iDialog.RemoteTagSet())
+		{
+		RStringF tagParamName = SIPStrings::StringF(SipStrConsts::ETag);
+		__ASSERT_ALWAYS(iDialog.RemoteTag() == from->ParamValue(tagParamName), 
+                        User::Leave(KErrSIPInvalidDialogRequest));
+		}
+	else
+        {
+		iDialog.SetRemoteTagL(aRequest->From());
+        }
+    CSIPCSeqHeader* cseq = aRequest->CSeq();
+    __SIP_ASSERT_LEAVE (cseq != 0, KErrArgument);
+	iDialog.SetRemoteSeqNum(cseq->Seq());
+	PassToOwnerL(aTransactionId,aRequest);
+	}
+
+// -----------------------------------------------------------------------------
+// TEarly::EndTransaction
+// -----------------------------------------------------------------------------
+//
+void TEarly::EndTransaction (CTransactionItemBase& aTransactionItem, 
+                             TInt aReason)
+	{
+	if (aReason)
+        {
+		PassToOwner(aTransactionItem,aReason);
+        }
+	if (iDialog.FirstTransactionId() == aTransactionItem.Id())
+		{
+		iDialog.SelfDestruct();
+		}
+	}
+
+// -----------------------------------------------------------------------------
+// TEarly::GetState
+// -----------------------------------------------------------------------------
+//
+void TEarly::GetState (CSIPInternalStates::TState& aState)
+    {
+    aState = CSIPInternalStates::EDialogEarly;
+    }