/*

* Copyright (c) 2004-2005 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: 

*

*/

#ifndef _WSOCK_HOST_RESOLVER_H_

#define _WSOCK_HOST_RESOLVER_H_

#include <es_prot.h>

class CWinsockHostResolver : public CHostResolvProvdBase

{

    enum TResolveErr {

        EResolveOK,

        EResolveNoMore,

        EResolveFailed

    };

private:

    HBufC* iHostName;

    const TWinProtocolDesc* iProtocolDesc;

public:

    static CWinsockHostResolver* NewL(const TWinProtocolDesc* aProtocolDesc);

    virtual ~CWinsockHostResolver();

    // CHostResolvProvdBase

    virtual void GetByName(TNameRecord& aName);

    virtual void GetByAddress(TNameRecord& aName);

    virtual void SetHostName(TDes& aNameBuf);

    virtual void GetHostName(TDes& aNameBuf);

    // CResolverProvdBase

    virtual void CancelCurrentOperation();

private:

    CWinsockHostResolver(const TWinProtocolDesc* aProtocolDesc);

    void ConstructL();

    TResolveErr Resolve6(const char* aName, TInt aIndex, TInetAddr* aAddr);

    TInt Resolve(const char* aName, TInt aIndex, TInetAddr* aAddr);

    TInt GetHostNameFromAddr6(const TIp6Addr& aAddr, THostName& aName);

    TInt GetHostNameFromAddr(TUint32 aAddr, THostName& aName);

};

#endif // _WSOCK_HOST_RESOLVER_H_