--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/hti/HtiServicePlugins/HtiIpProxyServicePlugin/IPProxyEngine/Src/CUDPSender.cpp	Wed Oct 13 16:17:58 2010 +0300
@@ -0,0 +1,232 @@
+/*
+* Copyright (c) 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:  UDP packet sender
+*
+*/
+
+
+
+// INCLUDE FILES
+#include "CUDPSender.h"
+#include "MUDPSenderObserver.h"
+
+#include <badesca.h>
+
+#define DEBUG_FILENAME "IPProxyEngine.log"
+#include "DebugPrint.h"
+
+
+const TInt KServerBusyWaiting = 200000;  //200 ms delay
+const TInt KUDPSenderSlots = 50;
+
+// ============================ MEMBER FUNCTIONS ===============================
+
+// -----------------------------------------------------------------------------
+// CUDPSender::CUDPSender
+// -----------------------------------------------------------------------------
+//
+CUDPSender::CUDPSender( MUDPSenderObserver* aObserver ) :
+    CActive( EPriorityStandard ), iObserver( aObserver )
+    {
+    __ASSERT_DEBUG( iObserver, User::Invariant() );
+    }
+
+// -----------------------------------------------------------------------------
+// CUDPSender::ConstructL
+// -----------------------------------------------------------------------------
+//
+void CUDPSender::ConstructL()
+    {
+    User::LeaveIfError( iSocketServ.Connect( KUDPSenderSlots ) );
+
+    // Create the socket
+    User::LeaveIfError( iSocket.Open( iSocketServ, KAfInet, KSockDatagram,
+        KProtocolInetUdp  ) );
+
+    iRemoteAddr.SetAddress(KInetAddrLoop);
+    
+    iTransferBufferArray = new (ELeave) CDesC8ArraySeg( 10 );
+    User::LeaveIfError( iTimer.CreateLocal() );
+    CActiveScheduler::Add( this );
+    }
+
+// -----------------------------------------------------------------------------
+// CUDPSender::NewL
+// -----------------------------------------------------------------------------
+//
+CUDPSender* CUDPSender::NewL( MUDPSenderObserver* aObserver )
+    {
+    CUDPSender* self = CUDPSender::NewLC( aObserver );
+    CleanupStack::Pop();
+
+    return self;
+    }
+
+// -----------------------------------------------------------------------------
+// CUDPSender::NewLC
+// -----------------------------------------------------------------------------
+//
+CUDPSender* CUDPSender::NewLC( MUDPSenderObserver* aObserver )
+    {
+    CUDPSender* self = new( ELeave ) CUDPSender( aObserver );
+    CleanupStack::PushL( self );
+
+    self->ConstructL();
+    return self;
+    }
+
+
+// Destructor
+CUDPSender::~CUDPSender()
+    {
+    Cancel();
+
+    iSocket.Close();
+    iSocketServ.Close();
+
+    iTimer.Close();
+    delete iTransferBufferArray;
+    }
+
+// -----------------------------------------------------------------------------
+// CUDPSender::IssueWriteL
+// -----------------------------------------------------------------------------
+//
+void CUDPSender::IssueWriteL( TUint aPort, const TDesC8& aData )
+    {
+    iRemoteAddr.SetPort(aPort);
+
+    // slice the size of data if bigger than KWriteBufferSize
+
+    TInt dsize = aData.Size();
+
+    for ( TInt i = 0; i < dsize; i+=KWriteBufferSize )
+        {
+        if ( i + KWriteBufferSize - 1 >= dsize )
+            {
+            __ASSERT_DEBUG( i + aData.Mid( i ).Size() == dsize ,
+                User::Panic( _L( "writer" ), 100 ) );
+            iTransferBufferArray->AppendL( aData.Mid(i) );
+            }
+        else
+            {
+            iTransferBufferArray->AppendL( aData.Mid( i, KWriteBufferSize ) );
+            }
+        }
+
+    if ( !IsActive() )
+        {
+        IssueWrite();
+        }
+    }
+
+// -----------------------------------------------------------------------------
+// CUDPSender::IssueWrite
+// -----------------------------------------------------------------------------
+void CUDPSender::IssueWrite()
+    {
+    DEBUG_PRINT( DEBUG_STRING(
+        "CUDPSender::IssueWrite" ) );
+    iWriteBuffer = (*iTransferBufferArray)[ 0 ];
+
+    DEBUG_PRINT( DEBUG_STRING(
+        "CSocketWriter::IssueWrite()" ) );
+
+    iSocket.SendTo( iWriteBuffer, iRemoteAddr, 0, iStatus );
+
+    SetActive();
+    }
+
+// -----------------------------------------------------------------------------
+// CUDPSender::ContinueAfterError
+// -----------------------------------------------------------------------------
+void CUDPSender::ContinueAfterError()
+    {
+    if ( iTransferBufferArray->Count() > 0 )
+        {
+        IssueWrite();
+        }
+    }
+
+// -----------------------------------------------------------------------------
+// CUDPSender::ResetTransferBuffer
+// -----------------------------------------------------------------------------
+void CUDPSender::ResetTransferBuffer()
+    {
+    iTransferBufferArray->Reset();
+    }
+
+// -----------------------------------------------------------------------------
+// CUDPSender::RunL
+// -----------------------------------------------------------------------------
+//
+void CUDPSender::RunL()
+    {
+    TInt status = iStatus.Int();
+    if ( status == KErrNone )
+        {
+        if ( iWaiting )
+            {
+            DEBUG_PRINT( DEBUG_STRING(
+                "Trying to write again..." ) );
+
+            iWaiting = EFalse;
+            IssueWrite();
+            }
+        else
+            {
+            iTransferBufferArray->Delete( 0 );
+            if ( iTransferBufferArray->Count() > 0 )
+                {
+                IssueWrite();
+                }
+            }
+        }
+    else
+        {
+        DEBUG_PRINT( DEBUG_STRING(
+            "CUDPSender::RunL(), iStatus=%d" ), status );
+        iObserver->UDPSenderErrorL( status );
+        //If Socket server is busy, wait for a while and try again
+        if ( status == KErrServerBusy )
+            {
+            DEBUG_PRINT( DEBUG_STRING(
+                "Socket server busy. Waiting for a while..." ) );
+            iWaiting = ETrue;
+            iTimer.After( iStatus, KServerBusyWaiting );
+            SetActive();
+            }
+        }
+    }
+
+// -----------------------------------------------------------------------------
+// CUDPSender::DoCancel
+// -----------------------------------------------------------------------------
+//
+void CUDPSender::DoCancel()
+    {
+    iTimer.Cancel();
+    iSocket.CancelWrite();
+    }
+
+// -----------------------------------------------------------------------------
+// CUDPSender::RunError
+// -----------------------------------------------------------------------------
+//
+TInt CUDPSender::RunError( TInt aError )
+    {
+    iObserver->UDPSenderLeavedL( aError );
+    return KErrNone;
+    }
+