/**

* Copyright (c) 1998-2009 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:

* Active object to perform DNS lookup

* Author:	Philippe Gabriel

* Performs DNS lookup for the FTP client

* 

*

*/

/**

 @file RESOLVER.H

 @internalComponent

*/

#if !defined(__RESOLVER_H__)

#define __RESOLVER_H__

#include "DEBUG.H"

#include "FTPDEF.H"

#include <e32base.h>

#include <in_sock.h>

//////////////////////////////////////////////////////////////

// Definitions

//////////////////////////////////////////////////////////////

class CFtpProtocol;

class MFTPResolverNotifier

/**

@internalComponent

*/

{

public:

/** 

Operation completion return codes.

*/ 

	enum TFTPResolverNotificationCode 

		{

		EDtpLookupComplete=0, 

		EDtpLookupFailed

		};

public:

		/** Notify of normal completion of an operation */

		virtual void FTPResolverNotifier(const TFTPResolverNotificationCode)=0;

};

NONSHARABLE_CLASS(CFTPResolver) : public CActive

/**

@internalComponent

*/

{

public:

	CFTPResolver(MFTPResolverNotifier*);

	~CFTPResolver();

	static CFTPResolver* NewL(MFTPResolverNotifier*,RSocketServ&);

	void ConstructL(RSocketServ& aSockServ);

	void Lookup(const THostName& aServerName);

	void SetAddress(TInetAddr& aAddress);

protected:

	void RunL();

    void DoCancel(void);

private:

	/** Used for resoving Ip Address from a name and vice versa */

	RHostResolver iResolver;  

	/** PlaceHolder for the resolved address */

	TInetAddr* iAddress; 

	TNameEntry iNameEntry;

	TNameRecord iNameRecord;

	MFTPResolverNotifier* iNotifier;

	TBuf8<40> iServerName;

};

#endif // __RESOLVER_H__