// Copyright (c) 2003-2009 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:

//

#ifndef __CHTTPCLIENTTRANSACTION_H__

#define __CHTTPCLIENTTRANSACTION_H__

#include <e32base.h>

#include <f32file.h>  

#include <http.h>

#include <httpheaderiter.h>

#include <mhttpcontentsource.h>

#include <mhttpcontentsink.h>

class CHttpService;

class CHttpClientTransactionImpl;

/**

 * In HTTP terms a single transaction is one request and its equivalent response. CHttpClientTransaction 

 * encapsulates the information for the transaction. The client transaction is associated with the client 

 * session. Client should derive from this class and implement the concrete use cases. [for ex; download, 

 * upload etc..]

 * 

 * @publishedAll

 * @prototype

 * 

 */

class CHttpClientTransaction : public CBase

	{

	public:

	IMPORT_C TInt Create(CHttpService& aClient, const TDesC8& aMethod, const TDesC8& aUri);

	IMPORT_C virtual ~CHttpClientTransaction();

	IMPORT_C TInt StatusCode() const;

	IMPORT_C const TDesC8& StatusText() const;

	IMPORT_C void DisablePipelining();

	IMPORT_C void SetNoRetry();

	IMPORT_C TInt SetContentSource(MHttpContentSource& aSource);

	IMPORT_C TInt SetContentSource(RFile& aFile);

	IMPORT_C TInt SetContentSink(MHttpContentSink& aSink);

	IMPORT_C TInt SetContentSink(RFile& aFile);

	IMPORT_C void SetRequestTimeout(TInt aValue);

	IMPORT_C void SetResponseTimeout(TInt aValue);

	IMPORT_C TInt AddRequestHeader(TInt aHeaderId, const THttpHeaderValueVariant& aHeaderValue);

	IMPORT_C TInt AddRequestHeader(TInt aHeaderId, const THttpHeaderValueVariant& aHeaderValue, TInt aParamId, const THttpHeaderValueVariant& aParamValue); 

    IMPORT_C TInt AddRequestHeader(const TDesC8& aHeaderName, const THttpHeaderValueVariant& aHeaderValue);

    IMPORT_C TInt AddRequestHeader(const TDesC8& aHeaderName, const THttpHeaderValueVariant& aHeaderValue, const TDesC8& aParamName, const THttpHeaderValueVariant& aParamValue); 

    IMPORT_C TInt AddRequestHeader(const TDesC8& aHeaderName, const TDesC8& aParamName, const THttpHeaderValueVariant& aParamValue);    

	IMPORT_C TInt AddCustomRequestHeader(const TDesC8& aHeaderName, const TDesC8& aHeaderValue);

	IMPORT_C THttpHeaderIterator         ResponseHeaders() const;

	IMPORT_C THttpHeaderElementIterator 	ResponseHeader(TInt aHeaderId);

	IMPORT_C THttpHeaderElementIterator 	ResponseHeader(const TDesC8& aHeaderName);

	IMPORT_C TInt SendRequest();

	IMPORT_C void CancelRequest();

	/**

	virtual functions

	*/

	virtual void OnResponseHeaders() =0;

	IMPORT_C virtual void OnTransferProgress(TInt aTotal, TInt aTransffered);

	IMPORT_C virtual TBool OnRedirection();

	virtual void OnCompletion() =0;

	virtual void OnError(TInt aError) =0;

	IMPORT_C virtual void OnWarning(TInt aWarning);

	private:

	// Reserved for future use.

	inline virtual void Reserved2();

	protected:

	IMPORT_C CHttpClientTransaction();

	private:		

	CHttpClientTransactionImpl* iHttpClientTrans;

	};

inline void CHttpClientTransaction::Reserved2()

	{

	}

#endif // __CHTTPCLIENTTRANSACTION_H__