/*

* Copyright (c) 2002-2009 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:

* Name          : MTransport.h

* Part of       : ConnectionMgr

* Version       : SIP/4.0 

*

*/

/**

 @internalComponent

*/

#ifndef __CTRANSPORTBASE_H__

#define __CTRANSPORTBASE_H__

#include <e32base.h>

#include <e32std.h>

#include <e32def.h>

#include <in_sock.h>

#include "Lwtimer.h"

#include "siprequest.h"

#include "sipresponse.h"

#include "sipmessage.h"

#include "sipclient.h"

#include "sipconnection.h"

#include "CSipConnectionMgr.h"

#include "SipStackServerDefs.h"

#include "CSender.h"

// FORWARD DECLARATIONS

class MSocketUsagePermissionObserver;

class MSIPNATBindingObserver;

class MSIPTransportRemovalObserver;

// CLASS DEFINITION

//

class CTransportBase :  public CBase

	{

public:

	virtual ~CTransportBase() {}

	virtual CSender* Sender(const TSIPTransportParams& aParams,

	                        TUint aProtocol,

	                        const TInetAddr& aRemoteAddr) = 0;

	virtual TUint ProtocolType() = 0;

	virtual TBool HandleL(const TSIPTransportParams& aParams,

	                      CSIPMessage* aMessage, 

	                      TTransactionId aId,

	                      TBool aIsStrict) = 0;

	virtual TBool HandleL(const TSIPTransportParams& aParams,

	                      CSIPMessage* aMessage, 

	                      const TInetAddr& aAddr,

	                      TUint aLocalPort,

	                      TBool aIsStrict) = 0;

	virtual TBool HandleMessage(const TSIPTransportParams& aParams,

	                            RStringF aProtocol,

							 	const TInetAddr& aRemoteAddr,

							 	TUint aLocalPort,

							 	TBool aIsStrict) = 0;

	virtual TBool Handle(TUint32 aTransportId) = 0;

	virtual TBool Match(const TSIPTransportParams& aParams) = 0;

	virtual void WaitL() = 0;

	virtual TBool IsWaiting(TUint aProtocol, TUint aPort) = 0;

	virtual void Send(const TSIPTransportParams& aParams,

	                  CSIPResponse& aResponse,

					  TTransactionId aId,

					  TRequestStatus &aStatus) = 0;

	virtual void Send(const TSIPTransportParams& aParams,

	                  CSIPResponse& aResponse,

					  const TInetAddr& aAddr,

					  TRequestStatus &aStatus) = 0;

	virtual void Send(const TSIPTransportParams& aParams,

	                  CSIPRequest& aRequest,

	                  TBool aForceUDP,

					  const TInetAddr& aAddr,

					  TUint aOrigTransport,

					  TRequestStatus &aStatus,

					  TBool aPublicAddrResolved) = 0;

	virtual TBool CancelSend(TRequestStatus& aStatus) = 0;

	virtual TBool CancelResponseSend(TTransactionId aId, 

	                                 TBool aCancelAlso2xxResponses) = 0;

	virtual void CancelAllRequests(CSIPConnection::TState aReason) = 0;

	virtual void GetAddrFromResponseL(const TSIPTransportParams& aParams,

	                                  CSIPMessage& aMessage,

									  TInetAddr& aAddr) = 0;

	virtual void ICMPErrorL(CSipConnectionMgr::TICMPError aICMPError,

							const TInetAddr& aSourceAddr) = 0;

	virtual TBool HasRemoteHost(const TSIPTransportParams& aParams,

	                            const TInetAddr& aRemoteHost,

	                            RStringF aProtocol) = 0;

	virtual void Disconnect(const TInetAddr& aRemoteHost) = 0;	

    virtual TBool Remove(const TSIPTransportParams& aParams) = 0;

    virtual TBool Remove(TUint32 aTransportId) = 0;

    virtual TBool Remove(MSIPNATBindingObserver& aSIPNATBindingObserver) = 0;

    virtual TBool Shutdown(TUint32 aTransportId,

                           MSIPTransportRemovalObserver* aRemovalObserver) = 0;

    virtual TBool AddUserL(const TSIPTransportParams& aParams, 

                           TUint aReceivePort) = 0;

    virtual TBool IsReservedTransport() const = 0;

    virtual RSocket* AcquireUdpSocket( MSocketUsagePermissionObserver* aObserver,

                                       const TInetAddr& aRemoteAddr,

                                       TBool& aPermissionToUse ) = 0;

    virtual void UdpSocketReleased( MSocketUsagePermissionObserver* aObserver,

                                    RSocket& aSocket ) = 0; 

    virtual TInetAddr* PersistentRemoteAddr( 

                            MSIPNATBindingObserver* aBindingObserver ) = 0;

	static const TInt iOffset;

	TSglQueLink iLink;

	};

#endif // end of __CTRANSPORTBASE_H__

// End of File