localconnectivityservice/dun/utils/src/DunTransUtils.cpp
branchRCL_3
changeset 42 0aa8cc770c8a
equal deleted inserted replaced
40:453dfc402455 42:0aa8cc770c8a
       
     1 /*
       
     2 * Copyright (c) 2006-2010 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:  Utility class for other CDunTransporter classes
       
    15 *
       
    16 */
       
    17 
       
    18 
       
    19 #include <e32base.h>
       
    20 #include <e32property.h>
       
    21 #include "dundomainpskeys.h"
       
    22 #include "DunTransUtils.h"
       
    23 #include "DunDataWaiter.h"
       
    24 #include "DunUpstream.h"
       
    25 #include "DunDownstream.h"
       
    26 #include "DunSignalCopy.h"
       
    27 #include "DunSignalNotify.h"
       
    28 #include "DunNoteHandler.h"
       
    29 #include "DunUtils.h"
       
    30 #include "DunDebug.h"
       
    31 
       
    32 // ---------------------------------------------------------------------------
       
    33 // Two-phased constructor.
       
    34 // ---------------------------------------------------------------------------
       
    35 //
       
    36 CDunTransUtils* CDunTransUtils::NewL( CDunTransporter& aParent,
       
    37                                       MDunPluginManager* aPluginManager )
       
    38     {
       
    39     CDunTransUtils* self = new (ELeave) CDunTransUtils( aParent,
       
    40                                                         aPluginManager );
       
    41     CleanupStack::PushL( self );
       
    42     self->ConstructL();
       
    43     CleanupStack::Pop( self );
       
    44     return self;
       
    45     }
       
    46 
       
    47 // ---------------------------------------------------------------------------
       
    48 // Destructor.
       
    49 // ---------------------------------------------------------------------------
       
    50 //
       
    51 CDunTransUtils::~CDunTransUtils()
       
    52     {
       
    53     FTRACE(FPrint( _L("CDunTransUtils::~CDunTransUtils()" )));
       
    54     FTRACE(FPrint( _L("CDunTransUtils::~CDunTransUtils() complete" )));
       
    55     }
       
    56 
       
    57 // ---------------------------------------------------------------------------
       
    58 // CDunTransUtils::CDunTransUtils
       
    59 // ---------------------------------------------------------------------------
       
    60 //
       
    61 CDunTransUtils::CDunTransUtils( CDunTransporter& aParent,
       
    62                                 MDunPluginManager* aPluginManager ) :
       
    63     iParent( aParent ),
       
    64     iChannelData( aParent.iChannelData ),
       
    65     iServAdvData( aParent.iServAdvData ),
       
    66     iPluginManager( aPluginManager )
       
    67     {
       
    68     }
       
    69 
       
    70 // ---------------------------------------------------------------------------
       
    71 // CDunTransUtils::ConstructL
       
    72 // ---------------------------------------------------------------------------
       
    73 //
       
    74 void CDunTransUtils::ConstructL()
       
    75     {
       
    76     FTRACE(FPrint( _L("CDunTransUtils::ConstructL()" )));
       
    77     if ( !iPluginManager )
       
    78         {
       
    79         User::Leave( KErrGeneral );
       
    80         }
       
    81     FTRACE(FPrint( _L("CDunTransUtils::ConstructL() complete" )));
       
    82     }
       
    83 
       
    84 // ---------------------------------------------------------------------------
       
    85 // Manages service advertisement status changes
       
    86 // ---------------------------------------------------------------------------
       
    87 //
       
    88 void CDunTransUtils::ManageAdvertisementStatusChange( TBool aAdvertise,
       
    89                                                       TBool aCreation )
       
    90     {
       
    91     FTRACE(FPrint( _L("CDunTransUtils::ManageAdvertisementStatusChange()" )));
       
    92     TInt i;
       
    93     TInt count;
       
    94     iParent.iAdvertise = aAdvertise;
       
    95     count = iServAdvData.Count();
       
    96     for ( i=0; i<count; i++ )
       
    97         {
       
    98         TDunServAdvData& servAdvData = iServAdvData[i];
       
    99         if ( servAdvData.iServAdvMon )
       
   100             {
       
   101             if ( aAdvertise )
       
   102                 {
       
   103                 servAdvData.iServAdvMon->NotifyAdvertisementStart( aCreation );
       
   104                 }
       
   105             else
       
   106                 {
       
   107                 servAdvData.iServAdvMon->NotifyAdvertisementEnd();
       
   108                 }
       
   109             }
       
   110         }
       
   111     FTRACE(FPrint( _L("CDunTransUtils::ManageAdvertisementStatusChange() complete" )));
       
   112     }
       
   113 
       
   114 // ---------------------------------------------------------------------------
       
   115 // Creates empty channel data
       
   116 // ---------------------------------------------------------------------------
       
   117 //
       
   118 void CDunTransUtils::CreateEmptyChannelData( TDunChannelData& aChannel )
       
   119     {
       
   120     FTRACE(FPrint( _L("CDunTransUtils::CreateEmptyChannelData()" )));
       
   121     aChannel.iNetwork = NULL;
       
   122     aChannel.iComm = NULL;
       
   123     aChannel.iSocket = NULL;
       
   124     aChannel.iChannelName = NULL;
       
   125     aChannel.iUpstreamRW = NULL;
       
   126     aChannel.iDownstreamRW = NULL;
       
   127     aChannel.iBufferUpstream = NULL;
       
   128     aChannel.iBufferDownstream = NULL;
       
   129     aChannel.iBufferUpPtr = NULL;
       
   130     aChannel.iBufferDownPtr = NULL;
       
   131     aChannel.iUpstreamSignalCopy = NULL;
       
   132     aChannel.iDownstreamSignalCopy = NULL;
       
   133     aChannel.iSignalNotify = NULL;
       
   134     aChannel.iOwnerUid = TUid::Null();
       
   135     aChannel.iChannelInUse = EFalse;
       
   136     FTRACE(FPrint( _L("CDunTransUtils::CreateEmptyChannelData() complete" )));
       
   137     }
       
   138 
       
   139 // ---------------------------------------------------------------------------
       
   140 // Creates new buffer if source buffer defined, otherwise already existing
       
   141 // buffer will be used
       
   142 // ---------------------------------------------------------------------------
       
   143 //
       
   144 void CDunTransUtils::DoCreateBufferLC( TUint8* aSrcBuffer,
       
   145                                        TPtr8* aSrcPtr,
       
   146                                        TUint8*& aDstBuffer,
       
   147                                        TPtr8*& aDstPtr,
       
   148                                        TInt aBufferLength,
       
   149                                        TInt& aItemsInCs )
       
   150     {
       
   151     FTRACE(FPrint( _L("CDunTransUtils::DoCreateBufferLC()" )));
       
   152     TUint8* buffer;
       
   153     if ( !aSrcBuffer )
       
   154         {
       
   155         buffer = new (ELeave) TUint8[aBufferLength];
       
   156         CleanupStack::PushL( buffer );
       
   157         aItemsInCs++;
       
   158         FTRACE(FPrint( _L("CDunTransUtils::DoCreateBufferLC() new created" )));
       
   159         }
       
   160     else
       
   161         {
       
   162         buffer = aSrcBuffer;
       
   163         FTRACE(FPrint( _L("CDunTransUtils::DoCreateBufferLC() existing set" )));
       
   164         }
       
   165     TPtr8* bufferPtr;
       
   166     if ( !aSrcPtr )
       
   167         {
       
   168         bufferPtr = new (ELeave) TPtr8( buffer, aBufferLength, aBufferLength );
       
   169         CleanupStack::PushL( bufferPtr );
       
   170         aItemsInCs++;
       
   171         FTRACE(FPrint( _L("CDunTransUtils::DoCreateBufferLC() new created" )));
       
   172         }
       
   173     else
       
   174         {
       
   175         bufferPtr = aSrcPtr;
       
   176         FTRACE(FPrint( _L("CDunTransUtils::DoCreateBufferLC() existing set" )));
       
   177         }
       
   178     aDstBuffer = buffer;
       
   179     aDstPtr = bufferPtr;
       
   180     FTRACE(FPrint( _L("CDunTransUtils::DoCreateBufferLC() complete" )));
       
   181     }
       
   182 
       
   183 // ---------------------------------------------------------------------------
       
   184 // Creates new signal copy object if source defined, otherwise already
       
   185 // existing will be used
       
   186 // ---------------------------------------------------------------------------
       
   187 //
       
   188 void CDunTransUtils::DoCreateSignalCopyLC( CDunSignalCopy* aSrcSignalCopy,
       
   189                                            CDunSignalCopy*& aDstSignalCopy,
       
   190                                            TInt& aItemsInCs )
       
   191     {
       
   192     FTRACE(FPrint( _L("CDunTransUtils::DoCreateSignalCopyLC()" )));
       
   193     CDunSignalCopy* signalCopy;
       
   194     if ( !aSrcSignalCopy )
       
   195         {
       
   196         signalCopy = CDunSignalCopy::NewL();
       
   197         CleanupStack::PushL( signalCopy );
       
   198         aItemsInCs++;
       
   199         FTRACE(FPrint( _L("CDunTransUtils::DoCreateSignalCopyLC() new created" )));
       
   200         }
       
   201     else
       
   202         {
       
   203         signalCopy = aSrcSignalCopy;
       
   204         FTRACE(FPrint( _L("CDunTransUtils::DoCreateSignalCopyLC() existing set" )));
       
   205         }
       
   206     aDstSignalCopy = signalCopy;
       
   207     FTRACE(FPrint( _L("CDunTransUtils::DoCreateSignalCopyLC() complete" )));
       
   208     }
       
   209 
       
   210 // ---------------------------------------------------------------------------
       
   211 // Creates new signal notify object if source defined, otherwise already
       
   212 // existing will be used
       
   213 // ---------------------------------------------------------------------------
       
   214 //
       
   215 void CDunTransUtils::DoCreateSignalNotifyLC(
       
   216     CDunSignalNotify* aSrcSignalNotify,
       
   217     CDunSignalNotify*& aDstSignalNotify,
       
   218     TInt& aItemsInCs )
       
   219     {
       
   220     FTRACE(FPrint( _L("CDunTransUtils::DoCreateSignalNotifyLC()" )));
       
   221     CDunSignalNotify* signalNotify;
       
   222     if ( !aSrcSignalNotify )
       
   223         {
       
   224         signalNotify = CDunSignalNotify::NewL( this );
       
   225         CleanupStack::PushL( signalNotify );
       
   226         aItemsInCs++;
       
   227         FTRACE(FPrint( _L("CDunTransUtils::DoCreateSignalNotifyLC() new created" )));
       
   228         }
       
   229     else
       
   230         {
       
   231         signalNotify = aSrcSignalNotify;
       
   232         FTRACE(FPrint( _L("CDunTransUtils::DoCreateSignalNotifyLC() existing set" )));
       
   233         }
       
   234     aDstSignalNotify = signalNotify;
       
   235     FTRACE(FPrint( _L("CDunTransUtils::DoCreateSignalNotifyLC() complete" )));
       
   236     }
       
   237 
       
   238 // ---------------------------------------------------------------------------
       
   239 // Creates transfer objects for reader and writer if sources defined,
       
   240 // otherwise already existing ones will be used
       
   241 // ---------------------------------------------------------------------------
       
   242 //
       
   243 void CDunTransUtils::DoCreateUpTransferObjectL( CDunUpstream* aSrcReader,
       
   244                                                 CDunUpstream*& aDstReader,
       
   245                                                 TInt& aItemsInCs )
       
   246     {
       
   247     FTRACE(FPrint( _L("CDunTransUtils::DoCreateUpTransferObjectL()" )));
       
   248     CDunUpstream* dunReader;
       
   249     if ( !aSrcReader )
       
   250         {
       
   251         dunReader = CDunUpstream::NewL( this );
       
   252         CleanupStack::PushL( dunReader );
       
   253         aItemsInCs++;
       
   254         FTRACE(FPrint( _L("CDunTransUtils::DoCreateUpTransferObjectL() new created" )));
       
   255         }
       
   256     else
       
   257         {
       
   258         dunReader = aSrcReader;
       
   259         FTRACE(FPrint( _L("CDunTransUtils::DoCreateUpTransferObjectL() existing set" )));
       
   260         }
       
   261     aDstReader = dunReader;
       
   262     FTRACE(FPrint( _L("CDunTransUtils::DoCreateUpTransferObjectL() complete" )));
       
   263     }
       
   264 
       
   265 // ---------------------------------------------------------------------------
       
   266 // Creates transfer objects for reader and writer if sources defined,
       
   267 // otherwise already existing ones will be used
       
   268 // ---------------------------------------------------------------------------
       
   269 //
       
   270 void CDunTransUtils::DoCreateDownTransferObjectL( CDunDownstream* aSrcReader,
       
   271                                                   CDunDownstream*& aDstReader,
       
   272                                                   TInt& aItemsInCs )
       
   273     {
       
   274     FTRACE(FPrint( _L("CDunTransUtils::DoCreateDownTransferObjectL()" )));
       
   275     CDunDownstream* dunReader;
       
   276     if ( !aSrcReader )
       
   277         {
       
   278         dunReader = CDunDownstream::NewL( this );
       
   279         CleanupStack::PushL( dunReader );
       
   280         aItemsInCs++;
       
   281         FTRACE(FPrint( _L("CDunTransUtils::DoCreateDownTransferObjectL() new created" )));
       
   282         }
       
   283     else
       
   284         {
       
   285         dunReader = aSrcReader;
       
   286         FTRACE(FPrint( _L("CDunTransUtils::DoCreateDownTransferObjectL() existing set" )));
       
   287         }
       
   288     aDstReader = dunReader;
       
   289     FTRACE(FPrint( _L("CDunTransUtils::DoCreateDownTransferObjectL() complete" )));
       
   290     }
       
   291 
       
   292 // ---------------------------------------------------------------------------
       
   293 // Resets/frees network data of aIndex:th channel
       
   294 // ---------------------------------------------------------------------------
       
   295 //
       
   296 TInt CDunTransUtils::DeleteOneNetworkData( TInt aIndex )
       
   297     {
       
   298     FTRACE(FPrint( _L("CDunTransUtils::DeleteOneNetworkData()" )));
       
   299 
       
   300     if ( aIndex < 0 ||
       
   301          aIndex >= iChannelData.Count() )
       
   302         {
       
   303         FTRACE(FPrint( _L("CDunTransUtils::DeleteOneNetworkData (not found) complete" )));
       
   304         return KErrNotFound;
       
   305         }
       
   306 
       
   307     TDunChannelData& channelData = iChannelData[aIndex];
       
   308     if ( !channelData.iChannelInUse )
       
   309         {
       
   310         FTRACE(FPrint( _L("CDunTransUtils::DeleteOneNetworkData() (channel not found) complete" ), aIndex));
       
   311         return KErrGeneral;
       
   312         }
       
   313 
       
   314     // channelData.iDownstreamSignalCopy may or may not exist (optional)
       
   315     // channelData.iSignalNotify may or may not exist (optional)
       
   316     delete channelData.iDownstreamSignalCopy;
       
   317     channelData.iDownstreamSignalCopy = NULL;
       
   318     delete channelData.iSignalNotify;
       
   319     channelData.iSignalNotify = NULL;
       
   320     delete channelData.iDownstreamRW;
       
   321     channelData.iDownstreamRW = NULL;
       
   322 
       
   323     FTRACE(FPrint( _L("CDunTransUtils::DeleteOneNetworkData complete()" )));
       
   324     return KErrNone;
       
   325     }
       
   326 
       
   327 // ---------------------------------------------------------------------------
       
   328 // Resets/frees network data of aIndex:th channel
       
   329 // ---------------------------------------------------------------------------
       
   330 //
       
   331 TInt CDunTransUtils::DeleteOneLocalData( TInt aIndex )
       
   332     {
       
   333     FTRACE(FPrint( _L("CDunTransUtils::DeleteOneLocalData()" )));
       
   334 
       
   335     if ( aIndex < 0 ||
       
   336          aIndex >= iChannelData.Count() )
       
   337         {
       
   338         FTRACE(FPrint( _L("CDunTransUtils::DeleteOneLocalData() (not found) complete" )));
       
   339         return KErrNotFound;
       
   340         }
       
   341 
       
   342     TDunChannelData& channelData = iChannelData[aIndex];
       
   343     if ( !channelData.iChannelInUse )
       
   344         {
       
   345         FTRACE(FPrint( _L("CDunTransUtils::DeleteOneLocalData() (channel not found) complete" ), aIndex));
       
   346         return KErrGeneral;
       
   347         }
       
   348 
       
   349     // channelData.iUpstreamSignalCopy may or may not exist (optional)
       
   350     delete channelData.iUpstreamSignalCopy;
       
   351     channelData.iUpstreamSignalCopy = NULL;
       
   352     delete channelData.iUpstreamRW;
       
   353     channelData.iUpstreamRW = NULL;
       
   354 
       
   355     FTRACE(FPrint( _L("CDunTransUtils::DeleteOneLocalData() complete" )));
       
   356     return KErrNone;
       
   357     }
       
   358 
       
   359 // ---------------------------------------------------------------------------
       
   360 // Deletes buffering objects of aIndex:th channel
       
   361 // ---------------------------------------------------------------------------
       
   362 //
       
   363 TInt CDunTransUtils::DeleteBuffering( TInt aIndex )
       
   364     {
       
   365     FTRACE(FPrint( _L("CDunTransUtils::DeleteBuffering()" )));
       
   366 
       
   367     if ( aIndex < 0 ||
       
   368          aIndex >= iChannelData.Count() )
       
   369         {
       
   370         FTRACE(FPrint( _L("CDunTransUtils::DeleteBuffering() (not found) complete" )));
       
   371         return KErrNotFound;
       
   372         }
       
   373     TDunChannelData& channelData = iChannelData[aIndex];
       
   374     if ( !channelData.iChannelInUse )
       
   375         {
       
   376         FTRACE(FPrint( _L("CDunTransUtils::DeleteBuffering() (channel not found) complete" ), aIndex));
       
   377         return KErrGeneral;
       
   378         }
       
   379 
       
   380     delete channelData.iChannelName;
       
   381     channelData.iChannelName = NULL;
       
   382     delete channelData.iBufferUpstream;
       
   383     channelData.iBufferUpstream = NULL;
       
   384     delete channelData.iBufferDownstream;
       
   385     channelData.iBufferDownstream = NULL;
       
   386     delete channelData.iBufferUpPtr;
       
   387     channelData.iBufferUpPtr = NULL;
       
   388     delete channelData.iBufferDownPtr;
       
   389     channelData.iBufferDownPtr = NULL;
       
   390 
       
   391     FTRACE(FPrint( _L("CDunTransUtils::DeleteBuffering() complete" )));
       
   392     return KErrNone;
       
   393     }
       
   394 
       
   395 // ---------------------------------------------------------------------------
       
   396 // Initializes first free channel
       
   397 // ---------------------------------------------------------------------------
       
   398 //
       
   399 TInt CDunTransUtils::InitializeFirstFreeChannel( TConnId aLocalIdNew )
       
   400     {
       
   401     FTRACE(FPrint( _L("CDunTransUtils::InitializeFirstFreeChannel()" )));
       
   402     TInt i;
       
   403     TInt count;
       
   404     TInt retTemp;
       
   405     TInt firstFree = KErrNotFound;
       
   406     count = iChannelData.Count();
       
   407     for ( i=0; i<count; i++ )
       
   408         {
       
   409         TDunChannelData& channelData = iChannelData[i];
       
   410         if ( channelData.iComm==aLocalIdNew ||
       
   411              channelData.iSocket==aLocalIdNew )
       
   412             {
       
   413             FTRACE(FPrint( _L("CDunTransUtils::InitializeFirstFreeChannel() (already exists) complete" )));
       
   414             return KErrAlreadyExists;
       
   415             }
       
   416         if ( !channelData.iChannelInUse && firstFree==KErrNotFound )
       
   417             {
       
   418             firstFree = i;
       
   419             // no "break" here since KErrAlreadyExists needs to be checked
       
   420             }
       
   421         }
       
   422     if ( firstFree >= 0 )
       
   423         {
       
   424         FTRACE(FPrint( _L("CDunTransUtils::InitializeFirstFreeChannel() complete" )));
       
   425         return i;
       
   426         }
       
   427     // Free channel not found, now create new if possible
       
   428     TDunChannelData emptyChannel;
       
   429     CreateEmptyChannelData( emptyChannel );
       
   430     retTemp = iChannelData.Append( emptyChannel );
       
   431     if ( retTemp != KErrNone )
       
   432         {
       
   433         FTRACE(FPrint( _L("CDunTransUtils::InitializeFirstFreeChannel() (append failed!) complete" )));
       
   434         return retTemp;
       
   435         }
       
   436     FTRACE(FPrint( _L("CDunTransUtils::InitializeFirstFreeChannel() complete" )));
       
   437     return i;
       
   438     }
       
   439 
       
   440 // ---------------------------------------------------------------------------
       
   441 // From class MDunTransporterUtility.
       
   442 // Allocates a channel by creating and setting local media independent
       
   443 // objects
       
   444 // This is a common method used by exported local media dependent methods
       
   445 // ---------------------------------------------------------------------------
       
   446 //
       
   447 void CDunTransUtils::DoAllocateChannelL( RComm* aComm,
       
   448                                          TInt& aBufferLength,
       
   449                                          TInt aFirstFree,
       
   450                                          MDunBufferCorrection* aCorrection )
       
   451     {
       
   452     FTRACE(FPrint( _L("CDunTransUtils::DoAllocateChannelL()" )));
       
   453     TInt retTemp;
       
   454     TInt itemsInCs = 0;
       
   455 
       
   456     if ( !iParent.iNetwork )
       
   457         {
       
   458         FTRACE(FPrint( _L("CDunTransUtils::DoAllocateChannelL() (iNetwork) not initialized!" )));
       
   459         User::Leave( KErrGeneral );
       
   460         }
       
   461 
       
   462     FTRACE(FPrint( _L("CDunTransUtils::DoAllocateChannelL() aFirstFree = %d" ), aFirstFree));
       
   463 
       
   464     // Allocate network channel
       
   465     RComm* networkEntity;
       
   466     retTemp = iParent.iNetwork->AllocateChannel( networkEntity );
       
   467     if ( retTemp != KErrNone )
       
   468         {
       
   469         FTRACE(FPrint( _L("CDunTransUtils::DoAllocateChannelL() network allocation failed" )));
       
   470         if ( retTemp == KErrTooBig )
       
   471             {
       
   472             // Start to show note
       
   473             if ( iParent.iNoteHandler )
       
   474                 {
       
   475                 iParent.iNoteHandler->IssueRequest();
       
   476                 }
       
   477             // Set flag to indicate that advertisement is not possible anymore
       
   478             ManageAdvertisementStatusChange( EFalse );
       
   479             FTRACE(FPrint( _L("CDunTransUtils::DoAllocateChannelL() (too big) complete" )));
       
   480             User::Leave( KErrTooBig );
       
   481             }
       
   482         FTRACE(FPrint( _L("CDunTransUtils::DoAllocateChannelL() (ERROR) complete" )));
       
   483         User::Leave( KErrGeneral );
       
   484         }
       
   485 
       
   486     TInt currentLength = networkEntity->ReceiveBufferLength();
       
   487     TInt newLength = currentLength;
       
   488     FTRACE(FPrint( _L("CDunTransUtils::DoAllocateChannelL() buffer length before = %d" ), currentLength));
       
   489     if ( aCorrection )
       
   490         {
       
   491         // Get network side buffer length and request change if required.
       
   492         // Check "newlength>currentLength" here as it is not possible to
       
   493         // increase Dataport's buffer length
       
   494         newLength = aCorrection->NotifyBufferCorrection( currentLength );
       
   495         if ( newLength<=0 || newLength>currentLength )
       
   496             {
       
   497             FTRACE(FPrint( _L("CDunTransUtils::DoAllocateChannelL() unknown buffer length" )));
       
   498             User::Leave( KErrGeneral );
       
   499             }
       
   500         // It is not possible to set Dataport side receive buffer length to any
       
   501         // arbitrary value (currently only 8kB..20kB are supported but that
       
   502         // can't be queried via an API). So here only default buffer size will
       
   503         // be used from Dataport while this component's local buffering uses
       
   504         // Dataport's default buffer size if not adjusted via plugin side.
       
   505         // NOTE: If Dataport side starts to support arbitrary receive buffer
       
   506         // size, it should be changed here if newLength != currentLength.
       
   507         }
       
   508     aBufferLength = newLength;
       
   509     FTRACE(FPrint( _L("CDunTransUtils::DoAllocateChannelL() buffer length after = %d" ), newLength));
       
   510 
       
   511     // Get channel data
       
   512 
       
   513     TDunChannelData& channelData = iChannelData[aFirstFree];
       
   514 
       
   515     // Create buffers and set length
       
   516 
       
   517     TUint8* bufferUpstream;
       
   518     TPtr8* bufferUpPtr;
       
   519     DoCreateBufferLC( channelData.iBufferUpstream,
       
   520                       channelData.iBufferUpPtr,
       
   521                       bufferUpstream,
       
   522                       bufferUpPtr,
       
   523                       newLength,
       
   524                       itemsInCs );
       
   525 
       
   526     TUint8* bufferDownstream;
       
   527     TPtr8* bufferDownPtr;
       
   528     DoCreateBufferLC( channelData.iBufferDownstream,
       
   529                       channelData.iBufferDownPtr,
       
   530                       bufferDownstream,
       
   531                       bufferDownPtr,
       
   532                       newLength,
       
   533                       itemsInCs );
       
   534 
       
   535     // Create signal copy objects
       
   536 
       
   537     CDunSignalCopy* upstreamCopy = channelData.iUpstreamSignalCopy;
       
   538     CDunSignalCopy* downstreamCopy = channelData.iDownstreamSignalCopy;
       
   539     if ( aComm )
       
   540         {
       
   541         DoCreateSignalCopyLC( channelData.iUpstreamSignalCopy,
       
   542                               upstreamCopy,
       
   543                               itemsInCs );
       
   544         DoCreateSignalCopyLC( channelData.iDownstreamSignalCopy,
       
   545                               downstreamCopy,
       
   546                               itemsInCs );
       
   547         retTemp = upstreamCopy->SetMedia( aComm,
       
   548                                           networkEntity,
       
   549                                           EDunStreamTypeUpstream );
       
   550         if ( retTemp != KErrNone )
       
   551             {
       
   552             delete upstreamCopy;
       
   553             upstreamCopy = NULL;
       
   554             }
       
   555         retTemp = downstreamCopy->SetMedia( aComm,
       
   556                                             networkEntity,
       
   557                                             EDunStreamTypeDownstream );
       
   558         if ( retTemp != KErrNone )
       
   559             {
       
   560             delete downstreamCopy;
       
   561             downstreamCopy = NULL;
       
   562             }
       
   563         }
       
   564 
       
   565     // Create signal notify objects
       
   566 
       
   567     CDunSignalNotify* signalNotify = channelData.iSignalNotify;
       
   568     if ( !aComm )  // RSocket
       
   569         {
       
   570         DoCreateSignalNotifyLC( channelData.iSignalNotify,
       
   571                                 signalNotify,
       
   572                                 itemsInCs );
       
   573         retTemp = signalNotify->SetMedia( networkEntity );
       
   574         if ( retTemp != KErrNone )
       
   575             {
       
   576             delete signalNotify;
       
   577             signalNotify = NULL;
       
   578             }
       
   579         }
       
   580 
       
   581     // Create upstream objects
       
   582 
       
   583     CDunUpstream* upstreamRW;
       
   584     DoCreateUpTransferObjectL( channelData.iUpstreamRW,
       
   585                                upstreamRW,
       
   586                                itemsInCs );
       
   587     upstreamRW->SetBuffering( bufferUpPtr );
       
   588     upstreamRW->SetMedia( networkEntity, EDunMediaContextNetwork );
       
   589     upstreamRW->SetActivityCallback( this );
       
   590 
       
   591     // Create downstream objects
       
   592 
       
   593     CDunDownstream* downstreamRW;
       
   594     DoCreateDownTransferObjectL( channelData.iDownstreamRW,
       
   595                                  downstreamRW,
       
   596                                  itemsInCs );
       
   597     downstreamRW->SetBuffering( bufferDownPtr );
       
   598     downstreamRW->SetMedia( networkEntity, EDunMediaContextNetwork );
       
   599 
       
   600     // Save values
       
   601 
       
   602     channelData.iNetwork = networkEntity;
       
   603     channelData.iUpstreamRW = upstreamRW;
       
   604     channelData.iDownstreamRW = downstreamRW;
       
   605     channelData.iBufferUpstream = bufferUpstream;
       
   606     channelData.iBufferDownstream = bufferDownstream;
       
   607     channelData.iBufferUpPtr = bufferUpPtr;
       
   608     channelData.iBufferDownPtr = bufferDownPtr;
       
   609     channelData.iUpstreamSignalCopy = upstreamCopy;
       
   610     channelData.iDownstreamSignalCopy = downstreamCopy;
       
   611     channelData.iSignalNotify = signalNotify;
       
   612 
       
   613     CleanupStack::Pop( itemsInCs );
       
   614 
       
   615     // Set flag to indicate that advertisement is now possible
       
   616     ManageAdvertisementStatusChange( ETrue, ETrue );
       
   617 
       
   618     FTRACE(FPrint( _L("CDunTransUtils::DoAllocateChannelL() complete" )));
       
   619     }
       
   620 
       
   621 // ---------------------------------------------------------------------------
       
   622 // From class MDunTransporterUtility.
       
   623 // Adds connection monitor callback for either local media or network side
       
   624 // by connection ID
       
   625 // Connection monitor will be added to aIndex:th endpoint
       
   626 // ---------------------------------------------------------------------------
       
   627 //
       
   628 TInt CDunTransUtils::DoAddConnMonCallback( TInt aIndex,
       
   629                                            MDunConnMon* aCallback,
       
   630                                            TDunDirection aDirection,
       
   631                                            TBool aSignal )
       
   632     {
       
   633     FTRACE(FPrint( _L("CDunTransUtils::DoAddConnMonCallback()" )));
       
   634 
       
   635     if ( !iParent.iNetwork )
       
   636         {
       
   637         FTRACE(FPrint( _L("CDunTransUtils::DoAddConnMonCallback() (iNetwork) not initialized!" )));
       
   638         return KErrGeneral;
       
   639         }
       
   640 
       
   641     if ( aIndex < 0 ||
       
   642          aIndex >= iChannelData.Count() )
       
   643         {
       
   644         FTRACE(FPrint( _L("CDunTransUtils::DoAddConnMonCallback() (not found) complete" )));
       
   645         return KErrNotFound;
       
   646         }
       
   647 
       
   648     TDunChannelData& channelData = iChannelData[aIndex];
       
   649 
       
   650     // Get upstream and downstream
       
   651     CDunUpstream* upstream = channelData.iUpstreamRW;
       
   652     CDunDownstream* downstream = channelData.iDownstreamRW;
       
   653 
       
   654     if ( aDirection == EDunReaderUpstream )
       
   655         {
       
   656         // Initialize stream for AT parsing (ignore errors)
       
   657         upstream->InitializeForAtParsing( downstream,
       
   658                                           channelData.iChannelName,
       
   659                                           upstream,
       
   660                                           downstream );
       
   661         downstream->InitializeForDataPushing( upstream );
       
   662         }
       
   663 
       
   664     // Get stream type and operation type
       
   665 
       
   666     TDunStreamType streamType =
       
   667         static_cast<TDunStreamType>( aDirection & KDunStreamTypeMask );
       
   668     TDunOperationType operationType =
       
   669         static_cast<TDunOperationType>( aDirection & KDunOperationTypeMask );
       
   670 
       
   671     if ( streamType == EDunStreamTypeUpstream )
       
   672         {
       
   673         // If signal copy object(s) exist then add RunL error monitoring for them
       
   674         if ( channelData.iUpstreamSignalCopy )  // optional
       
   675             {
       
   676             // Add callback (ignore errors)
       
   677             channelData.iUpstreamSignalCopy->AddCallback( aCallback );
       
   678             }
       
   679         }
       
   680     else if ( streamType == EDunStreamTypeDownstream )
       
   681         {
       
   682         // If signal copy object(s) exist then add RunL error monitoring for them
       
   683         if ( channelData.iDownstreamSignalCopy )  // optional
       
   684             {
       
   685             // Add callback (ignore errors)
       
   686             channelData.iDownstreamSignalCopy->AddCallback( aCallback );
       
   687             }
       
   688         }
       
   689     else
       
   690         {
       
   691         FTRACE(FPrint( _L("CDunTransUtils::DoAddConnMonCallback() (stream) not initialized!" ) ));
       
   692         return KErrGeneral;
       
   693         }
       
   694 
       
   695     // Set signal notify callback
       
   696 
       
   697     if ( aSignal && aDirection==EDunReaderDownstream )
       
   698         {
       
   699         if ( !channelData.iSignalNotify )
       
   700             {
       
   701             FTRACE(FPrint( _L("CDunTransUtils::DoAddConnMonCallback() (iSignalNotify) not initialized" )));
       
   702             return KErrGeneral;
       
   703             }
       
   704         // Add callback (ignore errors)
       
   705         channelData.iSignalNotify->AddCallback( aCallback );
       
   706         }
       
   707 
       
   708     // Add callback (ignore errors)
       
   709     if ( streamType == EDunStreamTypeUpstream )
       
   710         {
       
   711         upstream->AddConnMonCallback( aCallback, operationType );
       
   712         }
       
   713     else  // streamType == EDunStreamTypeDownstream
       
   714         {
       
   715         downstream->AddConnMonCallback( aCallback, operationType );
       
   716         }
       
   717 
       
   718     FTRACE(FPrint( _L("CDunTransUtils::DoAddConnMonCallback() complete" )));
       
   719     return KErrNone;
       
   720     }
       
   721 
       
   722 // ---------------------------------------------------------------------------
       
   723 // From class MDunTransporterUtility.
       
   724 // Adds error to consider as no error condition when doing any of the four
       
   725 // endpoint's read/writer operation
       
   726 // Error will be added to aIndex:th endpoint
       
   727 // ---------------------------------------------------------------------------
       
   728 //
       
   729 TInt CDunTransUtils::DoAddSkippedError( TInt aIndex,
       
   730                                         TInt aError,
       
   731                                         TDunDirection aDirection )
       
   732     {
       
   733     FTRACE(FPrint( _L("CDunTransUtils::AddOneSkippedError" ) ));
       
   734     if ( aIndex < 0 ||
       
   735          aIndex >= iChannelData.Count() )
       
   736         {
       
   737         FTRACE(FPrint( _L("CDunTransUtils::DoAddSkippedError() (not found) complete" )));
       
   738         return KErrNotFound;
       
   739         }
       
   740     TDunChannelData& channelData = iChannelData[aIndex];
       
   741     if ( !channelData.iChannelInUse )
       
   742         {
       
   743         FTRACE(FPrint( _L("CDunTransUtils::DoAddSkippedError() (channel not found) complete" ), aIndex));
       
   744         return KErrGeneral;
       
   745         }
       
   746 
       
   747     if ( aDirection != EDunReaderUpstream  &&
       
   748          aDirection != EDunWriterUpstream &&
       
   749          aDirection != EDunReaderDownstream &&
       
   750          aDirection != EDunWriterDownstream )
       
   751         {
       
   752         FTRACE(FPrint( _L("CDunTransUtils::DoAddSkippedError() (ERROR) added" ) ));
       
   753         return KErrNotSupported;
       
   754         }
       
   755 
       
   756     TDunStreamType streamType =
       
   757         static_cast<TDunStreamType>( aDirection & KDunStreamTypeMask );
       
   758     TDunOperationType operationType =
       
   759         static_cast<TDunOperationType>( aDirection & KDunOperationTypeMask );
       
   760 
       
   761     if ( streamType != EDunStreamTypeUpstream &&
       
   762          streamType != EDunStreamTypeDownstream )
       
   763         {
       
   764         FTRACE(FPrint( _L("CDunTransUtils::DoAddSkippedError() (stream) not initialized!" ) ));
       
   765         return KErrGeneral;
       
   766         }
       
   767 
       
   768     // Add skipped error (ignore errors)
       
   769 
       
   770     if ( streamType == EDunStreamTypeUpstream )
       
   771         {
       
   772         channelData.iUpstreamRW->AddSkippedError( aError, operationType );
       
   773         }
       
   774     else if ( streamType == EDunStreamTypeDownstream )
       
   775         {
       
   776         channelData.iDownstreamRW->AddSkippedError( aError, operationType );
       
   777         }
       
   778     else
       
   779         {
       
   780         FTRACE(FPrint( _L("CDunTransUtils::DoAddSkippedError() (stream) not initialized!" ) ));
       
   781         return KErrGeneral;
       
   782         }
       
   783 
       
   784     FTRACE(FPrint( _L("CDunTransUtils::DoAddSkippedError() complete" ) ));
       
   785     return KErrNone;
       
   786     }
       
   787 
       
   788 // ---------------------------------------------------------------------------
       
   789 // From class MDunTransporterUtility.
       
   790 // Issues transfers requests for aIndex:th transfer objects
       
   791 // ---------------------------------------------------------------------------
       
   792 //
       
   793 TInt CDunTransUtils::DoIssueTransferRequests( TInt aIndex )
       
   794     {
       
   795     FTRACE(FPrint( _L("CDunTransUtils::DoIssueTransferRequests()" )));
       
   796     if ( aIndex < 0 ||
       
   797          aIndex >= iChannelData.Count() )
       
   798         {
       
   799         FTRACE(FPrint( _L("CDunTransUtils::DoIssueTransferRequests() (not found) complete" )));
       
   800         return KErrNotFound;
       
   801         }
       
   802     TDunChannelData& channelData = iChannelData[aIndex];
       
   803     if ( !channelData.iChannelInUse )
       
   804         {
       
   805         FTRACE(FPrint( _L("CDunTransUtils::DoIssueTransferRequests() (channel not found) complete" ), aIndex));
       
   806         return KErrGeneral;
       
   807         }
       
   808 
       
   809     if ( !channelData.iUpstreamRW )
       
   810         {
       
   811         FTRACE(FPrint( _L("CDunTransUtils::DoIssueTransferRequests() (iUpstreamRW) not initialized!" )));
       
   812         return KErrGeneral;
       
   813         }
       
   814     if ( !channelData.iDownstreamRW )
       
   815         {
       
   816         FTRACE(FPrint( _L("CDunTransUtils::DoIssueTransferRequests() (iDownstreamRW) not initialized!" )));
       
   817         return KErrGeneral;
       
   818         }
       
   819 
       
   820     // Below issuing requests on signal objects (CDunSignalCopy,
       
   821     // CDunSignalNotify) before issuing request on read/write objects
       
   822     // (CDunUpstream/CDunDownstream). This is to guarantee that if signals are
       
   823     // already set in local media side then they will be copied to network side
       
   824     // before data.
       
   825 
       
   826     if ( channelData.iUpstreamSignalCopy )  // optional (RComm)
       
   827         {
       
   828         channelData.iUpstreamSignalCopy->IssueRequest();
       
   829         }
       
   830     if ( channelData.iDownstreamSignalCopy )  // optional (RComm)
       
   831         {
       
   832         channelData.iDownstreamSignalCopy->IssueRequest();
       
   833         }
       
   834     if ( channelData.iSignalNotify )  // optional (RSocket)
       
   835         {
       
   836         channelData.iSignalNotify->IssueRequest();
       
   837         }
       
   838     channelData.iUpstreamRW->StartStream();
       
   839     channelData.iDownstreamRW->StartStream();
       
   840 
       
   841     FTRACE(FPrint( _L("CDunTransUtils::DoIssueTransferRequests() complete" )));
       
   842     return KErrNone;
       
   843     }
       
   844 
       
   845 // ---------------------------------------------------------------------------
       
   846 // From class MDunTransporterUtility.
       
   847 // Stops transfers for aIndex:th transfer objects
       
   848 // ---------------------------------------------------------------------------
       
   849 //
       
   850 TInt CDunTransUtils::DoStopTransfers( TInt aIndex )
       
   851     {
       
   852     FTRACE(FPrint( _L("CDunTransUtils::DoStopTransfers()" )));
       
   853     if ( aIndex < 0 ||
       
   854          aIndex >= iChannelData.Count() )
       
   855         {
       
   856         FTRACE(FPrint( _L("CDunTransUtils::DoStopTransfers() (not found) complete" )));
       
   857         return KErrNotFound;
       
   858         }
       
   859 
       
   860     TDunChannelData& channelData = iChannelData[aIndex];
       
   861     if ( !channelData.iChannelInUse )
       
   862         {
       
   863         FTRACE(FPrint( _L("CDunTransUtils::DoStopTransfers() (channel not found) complete" ), aIndex));
       
   864         return KErrGeneral;
       
   865         }
       
   866 
       
   867     if ( !channelData.iUpstreamRW )
       
   868         {
       
   869         FTRACE(FPrint( _L("CDunTransUtils::DoStopTransfers() (iUpstreamRW) not initialized!" )));
       
   870         return KErrGeneral;
       
   871         }
       
   872     if ( !channelData.iDownstreamRW )
       
   873         {
       
   874         FTRACE(FPrint( _L("CDunTransUtils::DoStopTransfers() (iDownstreamRW) not initialized!" )));
       
   875         return KErrGeneral;
       
   876         }
       
   877 
       
   878     // Now stop operation of signal objects (CDunSignalCopy, CDunSignalNotify)
       
   879     // before stopping operation on read/write objects (CDunUpstream/
       
   880     // CDunDownstream). This is to ensure that signals don't change after
       
   881     // stopping read/write which in turn could cause problems.
       
   882 
       
   883     if ( channelData.iUpstreamSignalCopy )  // optional (RComm)
       
   884         {
       
   885         channelData.iUpstreamSignalCopy->Stop();
       
   886         }
       
   887     if ( channelData.iDownstreamSignalCopy )  // optional (RComm)
       
   888         {
       
   889         channelData.iDownstreamSignalCopy->Stop();
       
   890         }
       
   891     if ( channelData.iSignalNotify )  // optional (RSocket)
       
   892         {
       
   893         channelData.iSignalNotify->Stop();
       
   894         }
       
   895     channelData.iUpstreamRW->Stop();
       
   896     channelData.iDownstreamRW->Stop();
       
   897 
       
   898     FTRACE(FPrint( _L("CDunTransUtils::DoStopTransfers() complete" )));
       
   899     return KErrNone;
       
   900     }
       
   901 
       
   902 // ---------------------------------------------------------------------------
       
   903 // From class MDunTransporterUtility.
       
   904 // Free aIndex:th channel's objects
       
   905 // ---------------------------------------------------------------------------
       
   906 //
       
   907 TInt CDunTransUtils::DoFreeChannel( TInt aIndex )
       
   908     {
       
   909     FTRACE(FPrint( _L("CDunTransUtils::DoFreeChannel()" )));
       
   910 
       
   911     TDunChannelData& channelData = iChannelData[aIndex];
       
   912     if ( aIndex < 0 ||
       
   913          aIndex >= iChannelData.Count() )
       
   914         {
       
   915         FTRACE(FPrint( _L("CDunTransUtils::DoFreeChannel (not found) complete" )));
       
   916         return KErrNotFound;
       
   917         }
       
   918     if ( !channelData.iChannelInUse )
       
   919         {
       
   920         FTRACE(FPrint( _L("CDunTransUtils::DoFreeChannel (already free) complete" )));
       
   921         return KErrNone;
       
   922         }
       
   923     if ( !iParent.iNetwork )
       
   924         {
       
   925         FTRACE(FPrint( _L("CDunTransUtils::DoFreeChannel (iNetwork) not initialized!" )));
       
   926         return KErrGeneral;
       
   927         }
       
   928 
       
   929     DoStopTransfers( aIndex );
       
   930     DeleteOneNetworkData( aIndex );
       
   931     DeleteOneLocalData( aIndex );
       
   932     DeleteBuffering( aIndex );
       
   933 
       
   934     iParent.iNetwork->FreeChannel( channelData.iNetwork );
       
   935 
       
   936     channelData.iNetwork = NULL;
       
   937     channelData.iComm = NULL;
       
   938     channelData.iSocket = NULL;
       
   939     channelData.iChannelInUse = EFalse;
       
   940 
       
   941     // If note exist then stop it now as no reason to show it anymore
       
   942     if ( iParent.iNoteHandler )
       
   943         {
       
   944         iParent.iNoteHandler->Stop();
       
   945         }
       
   946     // Set flag to indicate that advertisement is now possible
       
   947     ManageAdvertisementStatusChange( ETrue, EFalse );
       
   948 
       
   949     FTRACE(FPrint( _L("CDunTransUtils::DoFreeChannel() complete" )));
       
   950     return KErrNone;
       
   951     }
       
   952 
       
   953 // ---------------------------------------------------------------------------
       
   954 // From class MDunTransporterUtilityAux.
       
   955 // Gets local ID counterpart of a network ID
       
   956 // ---------------------------------------------------------------------------
       
   957 //
       
   958 TConnId CDunTransUtils::GetLocalId( RComm* aComm )
       
   959     {
       
   960     FTRACE(FPrint( _L("CDunTransUtils::GetLocalId()" )));
       
   961     TInt mediaIndex = iParent.GetMediaIndex( aComm, EDunMediaContextNetwork );
       
   962     if ( mediaIndex < 0 )
       
   963         {
       
   964         FTRACE(FPrint( _L("CDunTransUtils::GetLocalId() (ERROR) complete (%d)" ), mediaIndex));
       
   965         return NULL;
       
   966         }
       
   967     if ( mediaIndex >= iChannelData.Count() )
       
   968         {
       
   969         FTRACE(FPrint( _L("CDunTransUtils::GetLocalId() (not found) complete" ) ));
       
   970         return NULL;
       
   971         }
       
   972     TDunChannelData& channelData = iChannelData[mediaIndex];
       
   973     if ( channelData.iComm )
       
   974         {
       
   975         FTRACE(FPrint( _L("CDunTransUtils::GetLocalId() (iComm) complete" )));
       
   976         return channelData.iComm;
       
   977         }
       
   978     if ( channelData.iSocket )
       
   979         {
       
   980         FTRACE(FPrint( _L("CDunTransUtils::GetLocalId() (iSocket) complete" )));
       
   981         return channelData.iSocket;
       
   982         }
       
   983     FTRACE(FPrint( _L("CDunTransUtils::GetLocalId() (ERROR) complete" )));
       
   984     return NULL;
       
   985     }
       
   986 
       
   987 // ---------------------------------------------------------------------------
       
   988 // From MDunTransporterUtilityAux.
       
   989 // Notifies when serious read/write error is detected on a connection
       
   990 // ---------------------------------------------------------------------------
       
   991 //
       
   992 TInt CDunTransUtils::DoNotifyConnectionNotOk(
       
   993     RComm* aComm,
       
   994     RSocket* aSocket,
       
   995     TDunConnectionReason& aConnReason,
       
   996     RPointerArray<MDunConnMon>& aCallbacks )
       
   997     {
       
   998     FTRACE(FPrint( _L("CDunTransUtils::DoNotifyConnectionNotOk()" )));
       
   999     TConnId localId = NULL;
       
  1000     if ( aComm )
       
  1001         {
       
  1002         localId = aComm;
       
  1003         }
       
  1004     else if ( aSocket )
       
  1005         {
       
  1006         localId = aSocket;
       
  1007         }
       
  1008     TInt i;
       
  1009     TInt count = aCallbacks.Count();
       
  1010     for ( i=0; i<count; i++ )
       
  1011         {
       
  1012         if ( !aCallbacks[i] )
       
  1013             {
       
  1014             FTRACE(FPrint( _L("CDunTransUtils::DoNotifyConnectionNotOk() (iCallbacks[%d]) not initialized!" ), i));
       
  1015             return KErrGeneral;
       
  1016             }
       
  1017         TRAP_IGNORE(
       
  1018             aCallbacks[i]->NotifyProgressChangeL( localId, aConnReason ) );
       
  1019         }
       
  1020     FTRACE(FPrint( _L("CDunTransUtils::DoNotifyConnectionNotOk() complete" )));
       
  1021     return KErrNone;
       
  1022     }
       
  1023 
       
  1024 // ---------------------------------------------------------------------------
       
  1025 // From class MDunActivityManager.
       
  1026 // Notifies about activity on a channel
       
  1027 // ---------------------------------------------------------------------------
       
  1028 //
       
  1029 TInt CDunTransUtils::NotifyChannelActivity()
       
  1030     {
       
  1031     FTRACE(FPrint( _L("CDunTransUtils::NotifyChannelActivity()" )));
       
  1032     iParent.iActiveChannels++;
       
  1033     if ( iParent.iActiveChannels == 1 )
       
  1034         {
       
  1035         // Now set key and notify (only once) that DUN is active
       
  1036         TInt retTemp = RProperty::Set( KPSUidDialupConnStatus,
       
  1037                                        KDialupConnStatus,
       
  1038                                        EDialupActive );
       
  1039         if ( retTemp != KErrNone )
       
  1040             {
       
  1041             FTRACE(FPrint( _L("CDunTransUtils::NotifyChannelActivity() (ERROR) complete" )));
       
  1042             return retTemp;
       
  1043             }
       
  1044         }
       
  1045     FTRACE(FPrint( _L("CDunTransUtils::NotifyChannelActivity() complete" )));
       
  1046     return KErrNone;
       
  1047     }
       
  1048 
       
  1049 // ---------------------------------------------------------------------------
       
  1050 // From class MDunActivityManager.
       
  1051 // Notifies about inactivity on a channel
       
  1052 // ---------------------------------------------------------------------------
       
  1053 //
       
  1054 TInt CDunTransUtils::NotifyChannelInactivity()
       
  1055     {
       
  1056     FTRACE(FPrint( _L("CDunTransUtils::NotifyChannelInactivity()" )));
       
  1057     if ( iParent.iActiveChannels <= 0 )
       
  1058         {
       
  1059         FTRACE(FPrint( _L("CDunTransUtils::NotifyChannelInactivity() (wrong iActiveChannels!) complete" )));
       
  1060         return KErrGeneral;
       
  1061         }
       
  1062     iParent.iActiveChannels--;
       
  1063     if ( iParent.iActiveChannels == 0 )
       
  1064         {
       
  1065         // Now set key and notify (only once) that DUN is inactive
       
  1066         TInt retTemp = RProperty::Set( KPSUidDialupConnStatus,
       
  1067                                        KDialupConnStatus,
       
  1068                                        EDialupInactive );
       
  1069         if ( retTemp != KErrNone )
       
  1070             {
       
  1071             FTRACE(FPrint( _L("CDunTransUtils::NotifyChannelInactivity() (ERROR) complete" )));
       
  1072             return retTemp;
       
  1073             }
       
  1074         }
       
  1075     FTRACE(FPrint( _L("CDunTransUtils::NotifyChannelInactivity() complete" )));
       
  1076     return KErrNone;
       
  1077     }