diff -r 000000000000 -r 5a93021fdf25 alwayson_net_plugin/pdpcontextmanager2/inc/linger.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/alwayson_net_plugin/pdpcontextmanager2/inc/linger.h	Thu Dec 17 08:55:21 2009 +0200
@@ -0,0 +1,291 @@
+/*
+* Copyright (c) 2007 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:  Provides lingering functionality for not-always-on connections.
+*
+*/
+
+
+#ifndef CLINGERCONNECTION_H
+#define CLINGERCONNECTION_H
+
+#include <e32base.h>
+#include <es_sock.h>
+#include <in_sock.h>
+#include <es_enum.h>
+
+class MAOSettings;
+
+/**
+ *  Monitors and keeps open/stops not-always-on connections.
+ *
+ *  Keeps not-always-on connection open for a lingering period.
+ *  (defined by T_notAlwaysOn) after connection has gone idle.
+ *  Then stops connection if it is still idle.
+ *
+ *  @lib pdpcontextmanager2
+ *  @since S60 v3.2
+ */
+NONSHARABLE_CLASS( CLingerConnection ) : public CBase
+    {
+public:
+
+    /** Possible status values */
+    enum TLingerStatus
+        {
+        ELingerStopped,
+        ELingerAttached,
+        ELingerRunning
+        };
+
+    /**
+     * Two-phased constructor.
+     * @param aConnectionInfo Connection id.
+     * @param aConnectionInfo Iap id and net id of the connection
+     * @param aSettings Provides timer settings
+     * @param aSocketServ Pointer to socket server
+     */
+    static CLingerConnection* NewL(
+          TUint            aConnectionId,
+          TConnectionInfo  aConnectionInfo, 
+          MAOSettings&     aSettings, 
+          RSocketServ*     aSocketServ );
+          
+    static CLingerConnection* NewLC(
+          TUint            aConnectionId, 
+          TConnectionInfo  aConnectionInfo, 
+          MAOSettings&     aSettings, 
+          RSocketServ*     aSocketServ );      
+    
+    /**
+    * Destructor.
+    */
+    virtual ~CLingerConnection();
+    
+    /**
+     * Attaches to connection and starts linger timer
+     *
+     * @since S60 v3.2
+     * @return error code in case of error else KErrNone
+     */
+    TInt StartLinger();
+    
+    /**
+     * Stops linger timer and detaches from connection
+     *
+     * @since S60 v3.2
+     * @return void
+     */
+    void StopLinger();
+
+    /**
+     * Stops connection
+     *
+     * @since S60 v3.2
+     * @return error code in case of error else KErrNone
+     */
+    TInt StopConnection();
+    
+    /**
+     * Refreshes settings from CommsDat
+     *
+     * @since S60 v3.2
+     * @return void
+     */
+    void HandleSettingsChanged();
+    
+    /**
+     * Returns connection id
+     *
+     * @since S60 v3.2
+     * @return connection id
+     */
+    TUint ConnectionId() { return iConnectionId; };
+
+    /**
+     * Returns iap id
+     *
+     * @since S60 v3.2
+     * @return iap id
+     */
+    TUint IapId() { return iConnectionInfo.iIapId; };
+    
+    /**
+     * Returns current status
+     *
+     * @since S60 v3.2
+     * @return current status
+     */
+    TInt Status();
+
+protected:
+
+private:
+
+    /**
+     * Default constructor.
+     * @param aConnectionInfo Connection id.
+     * @param aConnectionInfo Iap id and net id of the connection
+     * @param aSettings Provides timer settings
+     * @param aSocketServ Pointer to socket server
+     */
+    CLingerConnection( TUint           aConnectionId,
+                       TConnectionInfo aConnectionInfo,
+                       MAOSettings&    aSettings, 
+                       RSocketServ*    aSocketServ);
+
+    void ConstructL();
+
+    /**
+     * Opens and attaches to RConnection object to keep
+     * the connection open. 
+     *
+     * @since v3.2
+     * @return error code in case of error else KErrNone
+     */
+    TInt OpenAndAttach();
+    
+    /**
+     * Closes RConnection object.
+     *
+     * @since v3.2
+     * @return void
+     */
+    void CloseConnection();
+
+    /**
+     * Checks if there has been any data transfer throuh the connection
+     *
+     * @since S60 v3.2
+     * @return ETrue if connection is idle, otherwise EFalse.
+     */
+    TBool IsConnectionIdle();
+    
+    /**
+     * Reads linger settings.
+     *
+     * @since S60 v3.2
+     * @return void
+     */
+    void ReadSettings();
+    
+     /**
+     * Starts a periodic timer
+     *
+     * @since S60 v3.2
+     * @param aTimerInterval Timer  interval in seconds
+     * @param aReset Resets timer call count to zero when ETrue
+     * @return void
+     */
+    void StartTimer( TInt aTimerInterval, TBool aReset=ETrue );
+    
+    /**
+     * Stops periodic timer
+     *
+     * @since S60 v3.2
+     * @return void
+     */
+    void CancelTimer();
+    
+    /**
+     * Timer callback
+     *
+     * @since v3.2
+     * @param aSelf the caller
+     * @return error code in case of error else KErrNone
+     */
+    static TInt TimerCallBack( TAny* aSelf );
+
+private: // data
+
+     /**
+     * Connection id (from Connection Monitor)
+     */
+    TUint iConnectionId;
+    
+     /**
+     * Identifies connection (Iap id & net id)
+     */
+    TConnectionInfo iConnectionInfo;
+    
+    /**
+     * Reference to Settings object
+     */
+    MAOSettings& iSettings;
+
+    /**
+     * Pointer to socket server
+     * Not own.
+     */
+    RSocketServ* iSocketServ;
+    
+    /**
+     * Tells whether connection is linger mode or not
+     */
+    TBool iLingering;
+    
+    /**
+     * Tells whether connection is attached or not
+     */
+    TBool iAttached;
+    
+    /**
+     * Latest downlink data transferred
+     */
+    TUint iDlData;
+    
+    /**
+     * Packaged downlink data 
+     */
+    TPckg< TUint >  iPckgDlData;
+    
+    /**
+     * Latest uplink data transferred
+     */
+    TUint iUlData;
+    
+    /**
+     * Packaged uplink data
+     */
+    TPckg< TUint >  iPckgUlData;
+    
+    /**
+     * Connection object for keeping the connetion open
+     * and for stopping the connection when needed.
+     */
+    RConnection iConnection;
+    
+    /**
+     * Idle/linger timer
+     * Own.
+     */
+    CPeriodic* iTimer;
+
+    /**
+     * Linger interval in seconds
+     */
+    TInt iLingerInterval;
+    
+     /**
+     * Linger timer call count
+     */
+    TInt iLingerTimerCount;
+
+    /**
+     * Currently used timer interval
+     */
+    TInt iCurrentTimerInterval;
+    
+    };
+
+#endif // CLINGERCONNECTION_H