1 /*

     2  * Copyright (c) 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: S60Mcpr's implementation of the TCP receive window interface.

    15  * Reads the receive window sizes from Central repository.

    16  *

    17  */

    18 

    19 /**

    20  @file s60tcprecvwin.cpp

    21  S60 MCPR's TCP receive window interface.

    22  */

    23 

    24 #include <e32base.h>

    25 #include <es_sock.h>

    26 

    27 #include "s60tcprecvwin.h"

    28 

    29 #include <networking/cfbearers.h>

    30 #include <centralrepository.h>

    31 #include <comms-infras/metatype.h>

    32 

    33 const TUint KDefaultTcpRecvWinGprs = 32768;

    34 const TUint KDefaultTcpRecvWinEGprs = 32768;

    35 const TUint KDefaultTcpRecvWinUmts = 32768;

    36 const TUint KDefaultTcpRecvWinHsdpa = 131070;

    37 const TUint KDefaultTcpRecvWinWlan = 98302;

    38 const TUint KDefaultTcpRecvWinEthernet = 65535;

    39 

    40 using namespace ESock;

    41 

    42 // -----------------------------------------------------------------------------

    43 // CS60TCPReceiveWindowSize::CS60TCPReceiveWindowSize

    44 // -----------------------------------------------------------------------------

    45 //

    46 CS60TCPReceiveWindowSize::CS60TCPReceiveWindowSize() :

    47     CTCPReceiveWindowSize()

    48     {

    49     //  Populate TCP window lookup table.

    50     Init();

    51     }

    52 

    53 // -----------------------------------------------------------------------------

    54 // CS60TCPReceiveWindowSize::Init

    55 // -----------------------------------------------------------------------------

    56 //

    57 void CS60TCPReceiveWindowSize::Init()

    58     {

    59     TInt err = KErrNone;

    60     CRepository* repository = NULL;

    61 

    62     // No need to use CleanupStack because no possibility to leave

    63     TRAP( err, repository = CRepository::NewL( KCRUIDTcpWindowSizes ) );

    64 

    65     if ( err != KErrNone )

    66         {

    67         //TCP receive window size for GPRS

    68         iBearerInfoMap.Insert( KGprsBearer, KDefaultTcpRecvWinGprs );

    69         //TCP receive window size for EGPRS

    70         iBearerInfoMap.Insert( KEGprsBearer, KDefaultTcpRecvWinEGprs );

    71         //TCP receive window size for UMTS

    72         iBearerInfoMap.Insert( KUmtsBearer, KDefaultTcpRecvWinUmts );

    73         //TCP receive window size for HSDPA

    74         iBearerInfoMap.Insert( KHsdpaBearer, KDefaultTcpRecvWinHsdpa );

    75         //TCP receive window size for WLAN

    76         iBearerInfoMap.Insert( KWlanBearer, KDefaultTcpRecvWinWlan );

    77         //TCP receive window size for ethernet

    78         iBearerInfoMap.Insert( KEthernetBearer, KDefaultTcpRecvWinEthernet );

    79         //TCP receive window size for other bearer

    80         iBearerInfoMap.Insert( KDefaultBearer, KBearerDefaultWinSize );

    81         }

    82     else

    83         {

    84         SetInfoMapValue( KGprsBearer, repository, KDefaultTcpRecvWinGprs );

    85         SetInfoMapValue( KEGprsBearer, repository, KDefaultTcpRecvWinEGprs );

    86         SetInfoMapValue( KUmtsBearer, repository, KDefaultTcpRecvWinUmts );

    87         SetInfoMapValue( KHsdpaBearer, repository, KDefaultTcpRecvWinHsdpa );

    88         SetInfoMapValue( KWlanBearer, repository, KDefaultTcpRecvWinWlan );

    89         SetInfoMapValue( KEthernetBearer, repository, KDefaultTcpRecvWinEthernet );

    90         SetInfoMapValue( KDefaultBearerKey, repository, KBearerDefaultWinSize );

    91         }

    92     delete repository;

    93     }

    94 

    95 // -----------------------------------------------------------------------------

    96 // CS60TCPReceiveWindowSize::SetInfoMapValue

    97 // -----------------------------------------------------------------------------

    98 //

    99 void CS60TCPReceiveWindowSize::SetInfoMapValue( TUint aKey,

   100                                                 CRepository* aRepository,

   101                                                 TInt aDefaultWin )

   102     {

   103     // Set an information map value to an element found in

   104     // the central repository

   105     TInt err = KErrNone;

   106     TInt win_size = 0;

   107 

   108     err = aRepository->Get( aKey, win_size );

   109     if ( err != KErrNone || win_size <= 0 )

   110         {

   111         win_size = aDefaultWin;

   112         }

   113     iBearerInfoMap.Insert( aKey, win_size );

   114     }

   115 

   116 // -----------------------------------------------------------------------------

   117 // CS60TCPReceiveWindowSize::SetTcpWin

   118 // -----------------------------------------------------------------------------

   119 //

   120 void CS60TCPReceiveWindowSize::SetTcpWin( TUint aBearerType )

   121     {

   122     //Set the TCP Receive Window.

   123     TUint* i;

   124     i = static_cast<TUint*> ( iBearerInfoMap.Find( aBearerType ) );

   125     if ( i )

   126         {

   127         iWinSize = *i;

   128         }

   129     else

   130         {

   131         iWinSize = KBearerDefaultWinSize;

   132         }

   133     //Set the Max TCP receive Window.

   134     SetMaxWinSize( aBearerType );

   135     }

   136 

   137 // -----------------------------------------------------------------------------

   138 // CS60TCPReceiveWindowSize::SetMaxWinSize

   139 // -----------------------------------------------------------------------------

   140 //

   141 void CS60TCPReceiveWindowSize::SetMaxWinSize( TUint aBearerType )

   142     {

   143     switch ( aBearerType )

   144         {

   145         case KGprsBearer:

   146         case KEGprsBearer:

   147         case KUmtsBearer:

   148         case KHsdpaBearer:

   149             iMaxWinSize = *static_cast<TUint*> ( iBearerInfoMap.Find( KHsdpaBearer ) );

   150             break;

   151         case KWlanBearer:

   152             iMaxWinSize = *static_cast<TUint*> ( iBearerInfoMap.Find( KWlanBearer ) );

   153             break;

   154         case KEthernetBearer:

   155         case KDefaultBearer:

   156         default:

   157             iMaxWinSize = KBearerDefaultMaxWinSize;

   158             break;

   159         }

   160     }

   161 

   162 // -----------------------------------------------------------------------------

   163 // CS60TCPReceiveWindowSize::~CS60TCPReceiveWindowSize

   164 // -----------------------------------------------------------------------------

   165 //

   166 CS60TCPReceiveWindowSize::~CS60TCPReceiveWindowSize()

   167     {

   168     iBearerInfoMap.Close();

   169     }

   170 

   171 // Register the variables of TCP receive window class,

   172 // since it derives from SMetaData class

   173 START_ATTRIBUTE_TABLE(CTCPReceiveWindowSize,CTCPReceiveWindowSize::ERealmId, CTCPReceiveWindowSize::iId)

   174   REGISTER_ATTRIBUTE(CTCPReceiveWindowSize, iMaxWinSize, TMetaNumber)

   175   REGISTER_ATTRIBUTE(CTCPReceiveWindowSize, iWinSize, TMetaNumber)

   176 END_ATTRIBUTE_TABLE()

   177