1 /*

     2 * Copyright (c) 2004-2009 Nokia Corporation and/or its subsidiary(-ies).

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

     5 * under the terms of "Eclipse Public License v1.0"

     6 * which accompanies this distribution, and is available

     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description:

    15 * Name        : TStateActiveResolving.h

    16 * Part of     : NetworkMonitor

    17 * See class definition below.

    18 * Version     : SIP/4.0

    19 *

    20 */

    21 

    22 

    23 

    24 #ifndef __TSTATEACTIVERESOLVING_H__

    25 #define __TSTATEACTIVERESOLVING_H__

    26 

    27 // INCLUDES

    28 #include "TStateBase.h"

    29 #include "Lwtimer.h"

    30 

    31 // CONSTANTS

    32 const TUint KInitialResolvingTimer( 1000 ); // milliseconds

    33 const TUint KStartDoublingTimerValue( 4000 ); // milliseconds

    34 const TUint KMaximumResolvingTimer( 32000 ); // milliseconds

    35 

    36 // CLASS DEFINITION

    37 /**

    38  * TStateActiveResolving implements the Active:Resolving state

    39  */

    40 class TStateActiveResolving

    41 	: public TStateBase,

    42 	  public MExpirationHandler

    43 	{

    44 	public:	// Constructors and destructor

    45 

    46 		/**

    47 		 * Constructor.

    48 		 * @param aOwner State model that owns us.

    49 		 * @param aContext Reference to SIP connection context

    50 		 */

    51 		TStateActiveResolving( MStateModel& aOwner,

    52 							   MSIPConnectionContext& aContext,

    53 							   MTimerManager& aTimer )

    54 			: TStateBase( aOwner, aContext ), 

    55 			  iTimer( aTimer ),

    56 			  iTimerId( 0 ),

    57 			  iTimerValue( KInitialResolvingTimer ),

    58 			  iCumulativeTimerValue( KInitialResolvingTimer ) {}

    59 

    60 	public: // From TStateBase

    61 

    62 		void Enter( TInt aError );

    63 		void Exit();

    64 		void NetworkStateChanged( MSIPNetworkObserver::TNetworkState aState,

    65 								  TInt aError );

    66 

    67 	public: // From MExpirationHandler

    68 

    69 		void TimerExpiredL( TTimerId aTimerId, TAny* aTimerParam );

    70 

    71 	private: // New methods

    72 

    73 		/// @return ETrue if MSIPConnectionContext has a valid IP address

    74 		TBool HasAddress();

    75 		

    76 		TUint CalculateTimerValue();

    77 		void EnterActiveResolvedState();

    78 

    79 	private: // Data

    80 

    81 		/// Reference to the global timer manager.

    82 		MTimerManager& iTimer;

    83 

    84 		/// Handle to our timer (when active)

    85 		TTimerId iTimerId;

    86 		

    87 		TUint iTimerValue;

    88 		

    89 		TUint iCumulativeTimerValue;

    90 		

    91 	private: // For unit testing purposes

    92 #ifdef CPPUNIT_TEST

    93 	    friend class CStateModel_test;

    94 #endif

    95 	};

    96 

    97 #endif // __TSTATEACTIVERESOLVING_H__