/*

* Copyright (c) 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:

*   This file contains headers of Socket, SocketClient, SocketServer and

*   SocketSelect classes.

*/

#ifndef __SOCKET_H__

#define __SOCKET_H__

#include <WinSock2.h>

#include <string>

typedef std::string String;

//**********************************************************************************

// Class Socket

//

// This class encapsulates Windows Sockets API Socket functionality

//**********************************************************************************

class Socket {

public:

	Socket(SOCKET s);

	Socket();

	virtual ~Socket();

	Socket(const Socket&);

	Socket& operator=(Socket&);

	/*

	 * This method is used to read characters from socket until line separator is encountered

	 * Returns String including line separator

	 */

	String ReceiveLine();

	/*

	 * This method is used to read bytes from socket. The method reads all available and combines them to returned String object

	 */

	String ReceiveBytes();

	/*

	 * This method reads up to maximum amount of bytes from socket to the Data object given as parameter

	 * The maximum amount is given as parameter

	 */

	int ReceiveBytes(BYTE *data, int bytes);

	void   Close();

	/*

	 * This method is used to send String as a line

	 * The parameter of SendLine is not a const reference

	 * because SendLine modifes the String passed.

	 */

	void   SendLine (String);

	/*

	 * This method is used to send String as bytes

	 * The parameter is a const reference

	 * because the methos does not modify the String passed 

	 * (in contrast to SendLine).

	 */

	void   SendBytes(const String&);

	/*

	 * This method is used to send specific amount of bytes of String

	 * The parameter is a const reference

	 * because the methos does not modify the String passed 

	 * (in contrast to SendLine).

	 */

	int SendBytes(const BYTE* data, int bytes);

protected:

	friend class SocketServer;

	friend class SocketSelect;

	//winsock socket

	SOCKET s_;

	int* refCounter_;

private:

	static void Start();

	static void End();

	static int  nofSockets_;

};

//**********************************************************************************

// Class SocketClient

//

//**********************************************************************************

class SocketClient : public Socket {

public:

  SocketClient(const String& host, int port);

};

//**********************************************************************************

// Class SocketServer

//

// This class is used to:

// -listen for incoming connections to a Socket

// -connect to socket

//**********************************************************************************

class SocketServer// : public Socket 

{

public:

	SocketServer();

	/*

	 * This method binds and opens the given socket to listening mode 

	 */

	void Accept(Socket*& s, int port, int connections, String& remoteHost);

	/*

	 * This method establishes a connection to the socket

	 */

	void Connect(Socket* s, const char* remoteHost, int remotePort);

};

//**********************************************************************************

// Class SocketSelect

//

//**********************************************************************************

class SocketSelect {

  public:

    SocketSelect(Socket const * const s1, Socket const * const s2);

    bool Readable(Socket const * const s);

  private:

    fd_set fds_;

}; 

#endif