/*

* Copyright (c) 2005-2009 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:  

* CListeningServer.h

*

*/

#include <stdio.h>

#include "CListeningServer.h"

const int KTimeOut		= 120000; // 2 minute timeout for recieve calls

CListeningServer::CListeningServer()

	{

	}

CListeningServer::~CListeningServer()

	{

	}

int CListeningServer::Open( const int aPort )

	{

	WORD version;

	WSADATA wsaData;

	version = MAKEWORD( 2, 2 );

	if( WSAStartup( version, &wsaData ) )

		{

		return WSAGetLastError();

		}

	// Create a socket

	iLocalSock = socket( AF_INET, SOCK_STREAM, 0 ) ;

	if( iLocalSock == INVALID_SOCKET )

		{

		return WSAGetLastError();

		}

	iPort = aPort;

	// Set the socket

	iLocalAddr.sin_family = AF_INET;		

	iLocalAddr.sin_port = htons( iPort );

	iLocalAddr.sin_addr.S_un.S_addr = inet_addr( "0.0.0.0" );

	// Bind

	if( bind(iLocalSock,(struct sockaddr*)&iLocalAddr, sizeof(SOCKADDR_IN)) != 0 )

		{

		return WSAGetLastError();

		}

	// Listen to the socket

	if( listen( iLocalSock, 1 ) == SOCKET_ERROR ) 

		{

		return WSAGetLastError();

		}

	// Wait for the next connection

	int remote_addr_len = sizeof(iRemoteAddr);

	iRemoteSock = accept( iLocalSock, (struct sockaddr*)&iRemoteAddr, &remote_addr_len );

	if( iRemoteSock == INVALID_SOCKET )

		{

		return WSAGetLastError();

		}

	// Finally set the socket timeout for recieve calls (2 mins)

	return setsockopt( iRemoteSock, SOL_SOCKET, SO_RCVTIMEO, (char *)&KTimeOut, sizeof(KTimeOut) );

	}

void CListeningServer::Close()

{

	closesocket(iRemoteSock);

	closesocket(iLocalSock);

	WSACleanup();

}

int CListeningServer::Send( const int aValue )

	{

	int ret = 0;

	int bytes_sent_this_round;

	int total_bytes_to_send = sizeof(int);

	int total_bytes_sent = 0;

	int pre_send_data = htonl(aValue);

	char* buf = (char*)&pre_send_data;

	while( (total_bytes_sent < total_bytes_to_send) && !ret )

		{

		bytes_sent_this_round = send( iRemoteSock, &(buf[total_bytes_sent]), total_bytes_to_send - total_bytes_sent, 0 );

		if( bytes_sent_this_round == SOCKET_ERROR )

			{

			ret = WSAGetLastError();

			}

		total_bytes_sent += bytes_sent_this_round;

		}

	return ret;

	}

int CListeningServer::Recieve( int& aValue )

	{

	int ret = 0;

	int received_byte_count = 0;

	int bytes_to_receive = sizeof(int);

	int bytes_received_this_round = 1;

	char buf[sizeof(int)];

	memset( buf, 0, sizeof(int) );

	while( (received_byte_count < bytes_to_receive) && !ret )

		{

		bytes_received_this_round = recv( iRemoteSock, &(buf[received_byte_count]), bytes_to_receive - received_byte_count, 0 );

		if( bytes_received_this_round == SOCKET_ERROR )

			{

			ret = WSAGetLastError();

			}

		else if( bytes_received_this_round == 0 )

			{

			// The socket has been killed

			// Now close it at this end

			closesocket(iRemoteSock);

			closesocket(iLocalSock);

			WSACleanup();

			ret = INVALID_SOCKET;

			}

		received_byte_count += bytes_received_this_round;

		}

	if( received_byte_count == bytes_to_receive )

		{

		aValue = *((int*)buf);

		aValue = ntohl(aValue);

		}

	return ret;

	}