// Copyright (c) 1997-2009 Nokia Corporation and/or its subsidiary(-ies).

 // All rights reserved.

 // This component and the accompanying materials are made available

 // under the terms of the License "Symbian Foundation License v1.0" to Symbian Foundation members and "Symbian Foundation End User License Agreement v1.0" to non-members

 // which accompanies this distribution, and is available

 // at the URL "http://www.symbianfoundation.org/legal/licencesv10.html".

 //

 // Initial Contributors:

 // Nokia Corporation - initial contribution.

 //

 // Contributors:

 //

 // Description:

 // This file contains the header file of the Sms socket Buffers.

 // 

 //

 /**

  @file

 */

 #if !defined (__SMSUSTRM_H__)

 #define __SMSUSTRM_H__

 #if !defined(__E32STD_H__)

 #include <e32std.h>

 #endif

 #if !defined(__S32BUF_H__)

 #include <s32buf.h>

 #endif

 #if !defined(__S32STRM_H__)

 #include <s32strm.h>

 #endif

 class RSocket;

 /**

  *  @publishedAll

  *  @released

  */

 const TInt KSmsMaxSegmentLength=0x100;

 /**

  *  An SMS stream buffer to read and write over a socket.

  *  @publishedAll

  *  @released 

  */

 class RSmsSocketBuf : public TStreamBuf

 	{

 public:

 	RSmsSocketBuf(RSocket& aSocket);

 private:

 // from TStreamBuf

 	TInt UnderflowL(TInt aMaxLength);

 	void OverflowL();

 	void DoSynchL();

 private:

 	void SocketWriteL();

 //

 	inline TInt Lag(TRead) const;

 	inline TInt Lag(TWrite) const;

 private:

 	RSocket& iSocket;

 	TUint8 iBuffer[KSmsMaxSegmentLength];

 	};

 /**

  *  Stream that reads a CSmsMessage object across a socket.

  *  @publishedAll

  *  @released 

  */

 class RSmsSocketReadStream : public RReadStream

 	{

 public:

 	IMPORT_C RSmsSocketReadStream(RSocket& aSocket);

 private:

 	RSmsSocketBuf iBuf;

 	};

 /**

  *  Stream that writes a CSmsMessage object across a socket.

  *  @publishedAll

  *  @released 

  */

 class RSmsSocketWriteStream : public RWriteStream

 	{

 public:

 	IMPORT_C RSmsSocketWriteStream(RSocket& aSocket);

 private:

 	RSmsSocketBuf iBuf;

 	};

 #include "smsustrm.inl"

 #endif // !defined __SMSUSTRM_H__