// Copyright (c) 2004-2009 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:

// hostname.h - hostnames of the local node

//

/**

 @internalComponent	Domain Name Resolver

*/

#ifndef _HOSTNAME_H_

#define _HOSTNAME_H_

#include <es_sock.h>

class TLocalHostMap;

class CLocalHostName;

class THostNames

	/**

	* Cache for the local host names.

	*

	* Maintains mapping of between configured local host names and

	* ids.

	*

	* There can be only one hostname for each id. The same name

	* can be mapped to multiple ids. Mapping a new name the same id,

	* overwrites the previous mapping.

	*/

	{

public:

	// Constructor, empty cache.

	THostNames() : iNameList(NULL), iMap(NULL) {}

	// Destructor.

	~THostNames();

	// Defines mapping between the name and id.

	TInt Map(TUint32 aId, const TDesC &aName);

	// Removes mapping for the id.

	void Unmap(TUint32 aId);

	// Returns the name associated with the id.

	const TDesC &Find(TUint32 aId) const;

	// Reset hostname mapping to initial state (possibly non-empty cache).

	TInt Reset(const TDesC &aLocalHost);

	// Refresh hostname mapping for the specific network.

	TInt Refresh(TUint32 aId);

private:

	void ReferenceRemoved(const CLocalHostName *aName);

	void Cleanup();

	void GetCommDbDataL(TUint32 aId);

	CLocalHostName *iNameList;			//< List of registered hostnames.

	CArrayFixFlat<TLocalHostMap> *iMap;	//< Mapping of <networkid,hostname>

	};

#endif