connectionmonitoring/connmon/connectionmonitor/src/ConnMonBearerWLAN.cpp
changeset 0 5a93021fdf25
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/connectionmonitoring/connmon/connectionmonitor/src/ConnMonBearerWLAN.cpp	Thu Dec 17 08:55:21 2009 +0200
@@ -0,0 +1,128 @@
+/*
+* 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:  Implementation for bearer WLAN.
+*
+*/
+
+#include "ConnMonBearerWLAN.h"
+#include "connmoncommsdatcache.h"
+#include "ConnMonIAP.h"
+#include "log.h"
+
+// ---------------------------------------------------------------------------
+// Construction
+// ---------------------------------------------------------------------------
+//
+TConnMonBearerWLAN::TConnMonBearerWLAN(
+        CConnMonIAP* aConnMonIAP,
+        CConnMonCommsDatCache* aCommsDatCache )
+        :
+        TConnMonBearer( aConnMonIAP, aCommsDatCache )
+    {
+    }
+
+// ---------------------------------------------------------------------------
+// Is bearer available
+// ---------------------------------------------------------------------------
+//
+TInt TConnMonBearerWLAN::GetAvailability( TBool& /*aAvailable*/ ) const
+    {
+    // Not defined or not needed
+    return KErrNotSupported;
+    }
+
+// ---------------------------------------------------------------------------
+// Bearer ID getter
+// ---------------------------------------------------------------------------
+//
+TUint TConnMonBearerWLAN::BearerId() const
+    {
+    return EBearerIdWLAN;
+    }
+
+// ---------------------------------------------------------------------------
+// ETrue if bearer is valid (internal state is correct)
+// ---------------------------------------------------------------------------
+//
+TBool TConnMonBearerWLAN::Valid() const
+    {
+    return ETrue;
+    }
+
+// ---------------------------------------------------------------------------
+// Sets available IAPs of this type as available in CommsDat cache
+// ---------------------------------------------------------------------------
+//
+void TConnMonBearerWLAN::FlagAvailableIaps() const
+    {
+    LOGENTRFN("TConnMonBearerWLAN::FlagAvailableIaps()")
+
+    RArray<TUint> availableIdArray;
+    RArray<TUint> activeIdArray;
+
+    iConnMonIAP->GetActiveConnectionsIds( EBearerIdWLAN, activeIdArray );
+
+    if ( activeIdArray.Count() == 0 )
+        {
+        iConnMonIAP->AppendAvailableWLANIaps( availableIdArray );
+        }
+    else
+        {
+        LOGIT1("Found %d active WLAN IAPs", activeIdArray.Count())
+
+        // Policy based roaming. If current WLAN connection RSS (received
+        // signal strength) is not strong enough, don't give any WLAN IAPs in
+        // available state.
+        if ( iConnMonIAP->WlanRssGoodEnough() )
+            {
+            // KErrDisconnected will be returned if request for used SSID from WLAN engine fails.
+            TInt err = iConnMonIAP->AppendAvailableWLANIapsBySsid( availableIdArray );
+            if ( err != KErrNone )
+                {
+                availableIdArray.Reset();
+                if ( err == KErrDisconnected )
+                    {
+                    activeIdArray.Reset(); // No longer connected.
+                    iConnMonIAP->AppendAvailableWLANIaps( availableIdArray );
+                    }
+                }
+            }
+        else
+            {
+            // Current WLAN RSS is too weak, don't report any WLAN IAPs available.
+            availableIdArray.Reset();
+            activeIdArray.Reset();
+            }
+        }
+
+    for ( TInt i = 0; i < availableIdArray.Count(); i++ )
+        {
+        iCommsDatCache->SetAvailableIapWithId( availableIdArray[i] );
+        }
+    for ( TInt i = 0; i < activeIdArray.Count(); i++ )
+        {
+        // This will only add EasyWLAN IAP ID as available in those cases when
+        // the connection was started with it. This is done so there can't be a
+        // situation when a connection is up but ConnMon reports that
+        // connections IAP as unavailable. (EasyWLAN IAP has empty SSID field in
+        // CommsDat, so AppendAvailableWLANIapsBySsid-method will not find it).
+        iCommsDatCache->SetAvailableIapWithId( activeIdArray[i] );
+        }
+
+    availableIdArray.Close();
+    activeIdArray.Close();
+    LOGEXITFN("TConnMonBearerWLAN::FlagAvailableIaps()")
+    }
+
+// End-of-file