FreeRTOS-Plus/Demo/Common/Demo_IP_Protocols/Common/FreeRTOS_TCP_server.c - third_party/github/FreeRTOS/FreeRTOS-Kernel - Git at Google

 /*
  * FreeRTOS+TCP V2.0.3
  * Copyright (C) 2017 Amazon.com, Inc. or its affiliates.  All Rights Reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy of
  * this software and associated documentation files (the "Software"), to deal in
  * the Software without restriction, including without limitation the rights to
  * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
  * the Software, and to permit persons to whom the Software is furnished to do so,
  * subject to the following conditions:
  *
  * The above copyright notice and this permission notice shall be included in all
  * copies or substantial portions of the Software.
  *
  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
  * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
  * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
  * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  *
  * http://aws.amazon.com/freertos
  * http://www.FreeRTOS.org
  */


 /* Standard includes. */
 #include <stdint.h>
 #include <stdio.h>
 #include <stdlib.h>

 /* FreeRTOS includes. */
 #include "FreeRTOS.h"
 #include "task.h"

 /* FreeRTOS+TCP includes. */
 #include "FreeRTOS_IP.h"
 #include "FreeRTOS_Sockets.h"
 #include "FreeRTOS_TCP_server.h"
 #include "FreeRTOS_server_private.h"

 /* Remove the entire file if TCP is not being used. */
 #if( ipconfigUSE_TCP == 1 ) && ( ( ipconfigUSE_HTTP == 1 ) || ( ipconfigUSE_FTP == 1 ) )

 #if !defined( ARRAY_SIZE )
 	#define ARRAY_SIZE(x) ( BaseType_t ) (sizeof( x ) / sizeof( x )[ 0 ] )
 #endif


 static void prvReceiveNewClient( TCPServer_t *pxServer, BaseType_t xIndex, Socket_t xNexSocket );
 static char *strnew( const char *pcString );
 /* Remove slashes at the end of a path. */
 static void prvRemoveSlash( char *pcDir );

 TCPServer_t *FreeRTOS_CreateTCPServer( const struct xSERVER_CONFIG *pxConfigs, BaseType_t xCount )
 {
 TCPServer_t *pxServer;
 SocketSet_t xSocketSet;

 	/* Create a new server.
 	xPort / xPortAlt : Make the service available on 1 or 2 public port numbers. */
 	xSocketSet = FreeRTOS_CreateSocketSet();

 	if( xSocketSet != NULL )
 	{
 	BaseType_t xSize;

 		xSize = sizeof( *pxServer ) - sizeof( pxServer->xServers ) + xCount * sizeof( pxServer->xServers[ 0 ] );

 		pxServer = ( TCPServer_t * ) pvPortMallocLarge( xSize );
 		if( pxServer != NULL )
 		{
 		struct freertos_sockaddr xAddress;
 		BaseType_t xNoTimeout = 0;
 		BaseType_t xIndex;

 			memset( pxServer, '\0', xSize );
 			pxServer->xServerCount = xCount;
 			pxServer->xSocketSet = xSocketSet;

 			for( xIndex = 0; xIndex < xCount; xIndex++ )
 			{
 			BaseType_t xPortNumber = pxConfigs[ xIndex ].xPortNumber;

 				if( xPortNumber > 0 )
 				{
 				Socket_t xSocket;

 					xSocket = FreeRTOS_socket( FREERTOS_AF_INET, FREERTOS_SOCK_STREAM, FREERTOS_IPPROTO_TCP );
 					FreeRTOS_printf( ( "TCP socket on port %d\n", ( int )xPortNumber ) );

 					if( xSocket != FREERTOS_INVALID_SOCKET )
 					{
 						xAddress.sin_addr = FreeRTOS_GetIPAddress(); // Single NIC, currently not used
 						xAddress.sin_port = FreeRTOS_htons( xPortNumber );

 						FreeRTOS_bind( xSocket, &xAddress, sizeof( xAddress ) );
 						FreeRTOS_listen( xSocket, pxConfigs[ xIndex ].xBackLog );

 						FreeRTOS_setsockopt( xSocket, 0, FREERTOS_SO_RCVTIMEO, ( void * ) &xNoTimeout, sizeof( BaseType_t ) );
 						FreeRTOS_setsockopt( xSocket, 0, FREERTOS_SO_SNDTIMEO, ( void * ) &xNoTimeout, sizeof( BaseType_t ) );

 						#if( ipconfigHTTP_RX_BUFSIZE > 0 )
 						{
 							if( pxConfigs[ xIndex ].eType == eSERVER_HTTP )
 							{
 							WinProperties_t xWinProps;

 								memset( &xWinProps, '\0', sizeof( xWinProps ) );
 								/* The parent socket itself won't get connected.  The properties below
 								will be inherited by each new child socket. */
 								xWinProps.lTxBufSize = ipconfigHTTP_TX_BUFSIZE;
 								xWinProps.lTxWinSize = ipconfigHTTP_TX_WINSIZE;
 								xWinProps.lRxBufSize = ipconfigHTTP_RX_BUFSIZE;
 								xWinProps.lRxWinSize = ipconfigHTTP_RX_WINSIZE;

 								/* Set the window and buffer sizes. */
 								FreeRTOS_setsockopt( xSocket, 0, FREERTOS_SO_WIN_PROPERTIES, ( void * ) &xWinProps,	sizeof( xWinProps ) );
 							}
 						}
 						#endif

 						FreeRTOS_FD_SET( xSocket, xSocketSet, eSELECT_READ|eSELECT_EXCEPT );
 						pxServer->xServers[ xIndex ].xSocket = xSocket;
 						pxServer->xServers[ xIndex ].eType = pxConfigs[ xIndex ].eType;
 						pxServer->xServers[ xIndex ].pcRootDir = strnew( pxConfigs[ xIndex ].pcRootDir );
 						prvRemoveSlash( ( char * ) pxServer->xServers[ xIndex ].pcRootDir );
 					}
 				}
 			}
 		}
 		else
 		{
 			/* Could not allocate the server, delete the socket set */
 			FreeRTOS_DeleteSocketSet( xSocketSet );
 		}
 	}
 	else
 	{
 		/* Could not create a socket set, return NULL */
 		pxServer = NULL;
 	}

 	return pxServer;
 }
 /*-----------------------------------------------------------*/

 static void prvReceiveNewClient( TCPServer_t *pxServer, BaseType_t xIndex, Socket_t xNexSocket )
 {
 TCPClient_t *pxClient = NULL;
 BaseType_t xSize = 0;
 FTCPWorkFunction fWorkFunc = NULL;
 FTCPDeleteFunction fDeleteFunc = NULL;
 const char *pcType = "Unknown";

 	/*_RB_ Can the work and delete functions be part of the xSERVER_CONFIG structure
 	becomes generic, with no pre-processing required? */
 	#if( ipconfigUSE_HTTP != 0 )
 	{
 		if( pxServer->xServers[ xIndex ].eType == eSERVER_HTTP )
 		{
 			xSize = sizeof( HTTPClient_t );
 			fWorkFunc = xHTTPClientWork;
 			fDeleteFunc = vHTTPClientDelete;
 			pcType = "HTTP";
 		}
 	}
 	#endif /* ipconfigUSE_HTTP != 0 */

 	#if( ipconfigUSE_FTP != 0 )
 	{
 		if( pxServer->xServers[ xIndex ].eType == eSERVER_FTP )
 		{
 			xSize = sizeof( FTPClient_t );
 			fWorkFunc = xFTPClientWork;
 			fDeleteFunc = vFTPClientDelete;
 			pcType = "FTP";
 		}
 	}
 	#endif /* ipconfigUSE_FTP != 0 */

 	/* Malloc enough space for a new HTTP-client */
 	if( xSize )
 	{
 		pxClient = ( TCPClient_t* ) pvPortMallocLarge( xSize );
 	}

 	if( pxClient != NULL )
 	{
 		memset( pxClient, '\0', xSize );

 		/* Put the new client in front of the list. */
 		pxClient->eType = pxServer->xServers[ xIndex ].eType;
 		pxClient->pcRootDir = pxServer->xServers[ xIndex ].pcRootDir;
 		pxClient->pxParent = pxServer;
 		pxClient->xSocket = xNexSocket;
 		pxClient->pxNextClient = pxServer->pxClients;
 		pxClient->fWorkFunction = fWorkFunc;
 		pxClient->fDeleteFunction = fDeleteFunc;
 		pxServer->pxClients = pxClient;

 		FreeRTOS_FD_SET( xNexSocket, pxServer->xSocketSet, eSELECT_READ|eSELECT_EXCEPT );
 	}
 	else
 	{
 		pcType = "closed";
 		FreeRTOS_closesocket( xNexSocket );
 	}
 	{
 	struct freertos_sockaddr xRemoteAddress;
 		FreeRTOS_GetRemoteAddress( pxClient->xSocket, &xRemoteAddress );
 		FreeRTOS_printf( ( "TPC-server: new %s client %xip\n", pcType, (unsigned)FreeRTOS_ntohl( xRemoteAddress.sin_addr ) ) );
 	}

 	/* Remove compiler warnings in case FreeRTOS_printf() is not used. */
 	( void ) pcType;
 }
 /*-----------------------------------------------------------*/

 void FreeRTOS_TCPServerWork( TCPServer_t *pxServer, TickType_t xBlockingTime )
 {
 TCPClient_t **ppxClient;
 BaseType_t xIndex;
 BaseType_t xRc;

 	/* Let the server do one working cycle */
 	xRc = FreeRTOS_select( pxServer->xSocketSet, xBlockingTime );

 	if( xRc != 0 )
 	{
 		for( xIndex = 0; xIndex < pxServer->xServerCount; xIndex++ )
 		{
 		struct freertos_sockaddr xAddress;
 		Socket_t xNexSocket;
 		socklen_t xSocketLength;

 			if( pxServer->xServers[ xIndex ].xSocket == FREERTOS_NO_SOCKET )
 			{
 				continue;
 			}

 			xSocketLength = sizeof( xAddress );
 			xNexSocket = FreeRTOS_accept( pxServer->xServers[ xIndex ].xSocket, &xAddress, &xSocketLength);

 			if( ( xNexSocket != FREERTOS_NO_SOCKET ) && ( xNexSocket != FREERTOS_INVALID_SOCKET ) )
 			{
 				prvReceiveNewClient( pxServer, xIndex, xNexSocket );
 			}
 		}
 	}

 	ppxClient = &pxServer->pxClients;

 	while( ( * ppxClient ) != NULL )
 	{
 	TCPClient_t *pxThis = *ppxClient;

 		/* Almost C++ */
 		xRc = pxThis->fWorkFunction( pxThis );

 		if (xRc < 0 )
 		{
 			*ppxClient = pxThis->pxNextClient;
 			/* Close handles, resources */
 			pxThis->fDeleteFunction( pxThis );
 			/* Free the space */
 			vPortFreeLarge( pxThis );
 		}
 		else
 		{
 			ppxClient = &( pxThis->pxNextClient );
 		}
 	}
 }
 /*-----------------------------------------------------------*/

 static char *strnew( const char *pcString )
 {
 BaseType_t xLength;
 char *pxBuffer;

 	xLength = strlen( pcString ) + 1;
 	pxBuffer = ( char * ) pvPortMalloc( xLength );
 	if( pxBuffer != NULL )
 	{
 		memcpy( pxBuffer, pcString, xLength );
 	}

 	return pxBuffer;
 }
 /*-----------------------------------------------------------*/

 static void prvRemoveSlash( char *pcDir )
 {
 BaseType_t xLength = strlen( pcDir );

 	while( ( xLength > 0 ) && ( pcDir[ xLength - 1 ] == '/' ) )
 	{
 		pcDir[ --xLength ] = '\0';
 	}
 }
 /*-----------------------------------------------------------*/

 #if( ipconfigSUPPORT_SIGNALS != 0 )

 	/* FreeRTOS_TCPServerWork() calls select().
 	The two functions below provide a possibility to interrupt
 	the call to select(). After the interruption, resume
 	by calling FreeRTOS_TCPServerWork() again. */
 	BaseType_t FreeRTOS_TCPServerSignal( TCPServer_t *pxServer )
 	{
 	BaseType_t xIndex;
 	BaseType_t xResult = pdFALSE;
 		for( xIndex = 0; xIndex < pxServer->xServerCount; xIndex++ )
 		{
 			if( pxServer->xServers[ xIndex ].xSocket != FREERTOS_NO_SOCKET )
 			{
 				FreeRTOS_SignalSocket( pxServer->xServers[ xIndex ].xSocket );
 				xResult = pdTRUE;
 				break;
 			}
 		}

 		return xResult;
 	}

 #endif /* ipconfigSUPPORT_SIGNALS */
 /*-----------------------------------------------------------*/

 #if( ipconfigSUPPORT_SIGNALS != 0 )

 	/* Same as above: this function may be called from an ISR,
 	for instance a GPIO interrupt. */
 	BaseType_t FreeRTOS_TCPServerSignalFromISR( TCPServer_t *pxServer, BaseType_t *pxHigherPriorityTaskWoken )
 	{
 	BaseType_t xIndex;
 	BaseType_t xResult = pdFALSE;
 		for( xIndex = 0; xIndex < pxServer->xServerCount; xIndex++ )
 		{
 			if( pxServer->xServers[ xIndex ].xSocket != FREERTOS_NO_SOCKET )
 			{
 				FreeRTOS_SignalSocketFromISR( pxServer->xServers[ xIndex ].xSocket, pxHigherPriorityTaskWoken );
 				xResult = pdTRUE;
 				break;
 			}
 		}

 		return xResult;
 	}
 #endif /* ipconfigSUPPORT_SIGNALS */
 /*-----------------------------------------------------------*/

 #endif /* ( ipconfigUSE_TCP == 1 ) && ( ( ipconfigUSE_HTTP == 1 ) || ( ipconfigUSE_FTP == 1 ) ) */
	/*
	* FreeRTOS+TCP V2.0.3
	* Copyright (C) 2017 Amazon.com, Inc. or its affiliates. All Rights Reserved.
	*
	* Permission is hereby granted, free of charge, to any person obtaining a copy of
	* this software and associated documentation files (the "Software"), to deal in
	* the Software without restriction, including without limitation the rights to
	* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
	* the Software, and to permit persons to whom the Software is furnished to do so,
	* subject to the following conditions:
	*
	* The above copyright notice and this permission notice shall be included in all
	* copies or substantial portions of the Software.
	*
	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
	* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
	* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
	* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
	* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
	*
	* http://aws.amazon.com/freertos
	* http://www.FreeRTOS.org
	*/


	/* Standard includes. */
	#include <stdint.h>
	#include <stdio.h>
	#include <stdlib.h>

	/* FreeRTOS includes. */
	#include "FreeRTOS.h"
	#include "task.h"

	/* FreeRTOS+TCP includes. */
	#include "FreeRTOS_IP.h"
	#include "FreeRTOS_Sockets.h"
	#include "FreeRTOS_TCP_server.h"
	#include "FreeRTOS_server_private.h"

	/* Remove the entire file if TCP is not being used. */
	#if( ipconfigUSE_TCP == 1 ) && ( ( ipconfigUSE_HTTP == 1 ) \|\| ( ipconfigUSE_FTP == 1 ) )

	#if !defined( ARRAY_SIZE )
	#define ARRAY_SIZE(x) ( BaseType_t ) (sizeof( x ) / sizeof( x )[ 0 ] )
	#endif


	static void prvReceiveNewClient( TCPServer_t *pxServer, BaseType_t xIndex, Socket_t xNexSocket );
	static char strnew( const char pcString );
	/* Remove slashes at the end of a path. */
	static void prvRemoveSlash( char *pcDir );

	TCPServer_t FreeRTOS_CreateTCPServer( const struct xSERVER_CONFIG pxConfigs, BaseType_t xCount )
	{
	TCPServer_t *pxServer;
	SocketSet_t xSocketSet;

	/* Create a new server.
	xPort / xPortAlt : Make the service available on 1 or 2 public port numbers. */
	xSocketSet = FreeRTOS_CreateSocketSet();

	if( xSocketSet != NULL )
	{
	BaseType_t xSize;

	xSize = sizeof( pxServer ) - sizeof( pxServer->xServers ) + xCount sizeof( pxServer->xServers[ 0 ] );

	pxServer = ( TCPServer_t * ) pvPortMallocLarge( xSize );
	if( pxServer != NULL )
	{
	struct freertos_sockaddr xAddress;
	BaseType_t xNoTimeout = 0;
	BaseType_t xIndex;

	memset( pxServer, '\0', xSize );
	pxServer->xServerCount = xCount;
	pxServer->xSocketSet = xSocketSet;

	for( xIndex = 0; xIndex < xCount; xIndex++ )
	{
	BaseType_t xPortNumber = pxConfigs[ xIndex ].xPortNumber;

	if( xPortNumber > 0 )
	{
	Socket_t xSocket;

	xSocket = FreeRTOS_socket( FREERTOS_AF_INET, FREERTOS_SOCK_STREAM, FREERTOS_IPPROTO_TCP );
	FreeRTOS_printf( ( "TCP socket on port %d\n", ( int )xPortNumber ) );

	if( xSocket != FREERTOS_INVALID_SOCKET )
	{
	xAddress.sin_addr = FreeRTOS_GetIPAddress(); // Single NIC, currently not used
	xAddress.sin_port = FreeRTOS_htons( xPortNumber );

	FreeRTOS_bind( xSocket, &xAddress, sizeof( xAddress ) );
	FreeRTOS_listen( xSocket, pxConfigs[ xIndex ].xBackLog );

	FreeRTOS_setsockopt( xSocket, 0, FREERTOS_SO_RCVTIMEO, ( void * ) &xNoTimeout, sizeof( BaseType_t ) );
	FreeRTOS_setsockopt( xSocket, 0, FREERTOS_SO_SNDTIMEO, ( void * ) &xNoTimeout, sizeof( BaseType_t ) );

	#if( ipconfigHTTP_RX_BUFSIZE > 0 )
	{
	if( pxConfigs[ xIndex ].eType == eSERVER_HTTP )
	{
	WinProperties_t xWinProps;

	memset( &xWinProps, '\0', sizeof( xWinProps ) );
	/* The parent socket itself won't get connected. The properties below
	will be inherited by each new child socket. */
	xWinProps.lTxBufSize = ipconfigHTTP_TX_BUFSIZE;
	xWinProps.lTxWinSize = ipconfigHTTP_TX_WINSIZE;
	xWinProps.lRxBufSize = ipconfigHTTP_RX_BUFSIZE;
	xWinProps.lRxWinSize = ipconfigHTTP_RX_WINSIZE;

	/* Set the window and buffer sizes. */
	FreeRTOS_setsockopt( xSocket, 0, FREERTOS_SO_WIN_PROPERTIES, ( void * ) &xWinProps, sizeof( xWinProps ) );
	}
	}
	#endif

	FreeRTOS_FD_SET( xSocket, xSocketSet, eSELECT_READ\|eSELECT_EXCEPT );
	pxServer->xServers[ xIndex ].xSocket = xSocket;
	pxServer->xServers[ xIndex ].eType = pxConfigs[ xIndex ].eType;
	pxServer->xServers[ xIndex ].pcRootDir = strnew( pxConfigs[ xIndex ].pcRootDir );
	prvRemoveSlash( ( char * ) pxServer->xServers[ xIndex ].pcRootDir );
	}
	}
	}
	}
	else
	{
	/* Could not allocate the server, delete the socket set */
	FreeRTOS_DeleteSocketSet( xSocketSet );
	}
	}
	else
	{
	/* Could not create a socket set, return NULL */
	pxServer = NULL;
	}

	return pxServer;
	}
	/-----------------------------------------------------------/

	static void prvReceiveNewClient( TCPServer_t *pxServer, BaseType_t xIndex, Socket_t xNexSocket )
	{
	TCPClient_t *pxClient = NULL;
	BaseType_t xSize = 0;
	FTCPWorkFunction fWorkFunc = NULL;
	FTCPDeleteFunction fDeleteFunc = NULL;
	const char *pcType = "Unknown";

	/*_RB_ Can the work and delete functions be part of the xSERVER_CONFIG structure
	becomes generic, with no pre-processing required? */
	#if( ipconfigUSE_HTTP != 0 )
	{
	if( pxServer->xServers[ xIndex ].eType == eSERVER_HTTP )
	{
	xSize = sizeof( HTTPClient_t );
	fWorkFunc = xHTTPClientWork;
	fDeleteFunc = vHTTPClientDelete;
	pcType = "HTTP";
	}
	}
	#endif /* ipconfigUSE_HTTP != 0 */

	#if( ipconfigUSE_FTP != 0 )
	{
	if( pxServer->xServers[ xIndex ].eType == eSERVER_FTP )
	{
	xSize = sizeof( FTPClient_t );
	fWorkFunc = xFTPClientWork;
	fDeleteFunc = vFTPClientDelete;
	pcType = "FTP";
	}
	}
	#endif /* ipconfigUSE_FTP != 0 */

	/* Malloc enough space for a new HTTP-client */
	if( xSize )
	{
	pxClient = ( TCPClient_t* ) pvPortMallocLarge( xSize );
	}

	if( pxClient != NULL )
	{
	memset( pxClient, '\0', xSize );

	/* Put the new client in front of the list. */
	pxClient->eType = pxServer->xServers[ xIndex ].eType;
	pxClient->pcRootDir = pxServer->xServers[ xIndex ].pcRootDir;
	pxClient->pxParent = pxServer;
	pxClient->xSocket = xNexSocket;
	pxClient->pxNextClient = pxServer->pxClients;
	pxClient->fWorkFunction = fWorkFunc;
	pxClient->fDeleteFunction = fDeleteFunc;
	pxServer->pxClients = pxClient;

	FreeRTOS_FD_SET( xNexSocket, pxServer->xSocketSet, eSELECT_READ\|eSELECT_EXCEPT );
	}
	else
	{
	pcType = "closed";
	FreeRTOS_closesocket( xNexSocket );
	}
	{
	struct freertos_sockaddr xRemoteAddress;
	FreeRTOS_GetRemoteAddress( pxClient->xSocket, &xRemoteAddress );
	FreeRTOS_printf( ( "TPC-server: new %s client %xip\n", pcType, (unsigned)FreeRTOS_ntohl( xRemoteAddress.sin_addr ) ) );
	}

	/* Remove compiler warnings in case FreeRTOS_printf() is not used. */
	( void ) pcType;
	}
	/-----------------------------------------------------------/

	void FreeRTOS_TCPServerWork( TCPServer_t *pxServer, TickType_t xBlockingTime )
	{
	TCPClient_t **ppxClient;
	BaseType_t xIndex;
	BaseType_t xRc;

	/* Let the server do one working cycle */
	xRc = FreeRTOS_select( pxServer->xSocketSet, xBlockingTime );

	if( xRc != 0 )
	{
	for( xIndex = 0; xIndex < pxServer->xServerCount; xIndex++ )
	{
	struct freertos_sockaddr xAddress;
	Socket_t xNexSocket;
	socklen_t xSocketLength;

	if( pxServer->xServers[ xIndex ].xSocket == FREERTOS_NO_SOCKET )
	{
	continue;
	}

	xSocketLength = sizeof( xAddress );
	xNexSocket = FreeRTOS_accept( pxServer->xServers[ xIndex ].xSocket, &xAddress, &xSocketLength);

	if( ( xNexSocket != FREERTOS_NO_SOCKET ) && ( xNexSocket != FREERTOS_INVALID_SOCKET ) )
	{
	prvReceiveNewClient( pxServer, xIndex, xNexSocket );
	}
	}
	}

	ppxClient = &pxServer->pxClients;

	while( ( * ppxClient ) != NULL )
	{
	TCPClient_t pxThis = ppxClient;

	/* Almost C++ */
	xRc = pxThis->fWorkFunction( pxThis );

	if (xRc < 0 )
	{
	*ppxClient = pxThis->pxNextClient;
	/* Close handles, resources */
	pxThis->fDeleteFunction( pxThis );
	/* Free the space */
	vPortFreeLarge( pxThis );
	}
	else
	{
	ppxClient = &( pxThis->pxNextClient );
	}
	}
	}
	/-----------------------------------------------------------/

	static char strnew( const char pcString )
	{
	BaseType_t xLength;
	char *pxBuffer;

	xLength = strlen( pcString ) + 1;
	pxBuffer = ( char * ) pvPortMalloc( xLength );
	if( pxBuffer != NULL )
	{
	memcpy( pxBuffer, pcString, xLength );
	}

	return pxBuffer;
	}
	/-----------------------------------------------------------/

	static void prvRemoveSlash( char *pcDir )
	{
	BaseType_t xLength = strlen( pcDir );

	while( ( xLength > 0 ) && ( pcDir[ xLength - 1 ] == '/' ) )
	{
	pcDir[ --xLength ] = '\0';
	}
	}
	/-----------------------------------------------------------/

	#if( ipconfigSUPPORT_SIGNALS != 0 )

	/* FreeRTOS_TCPServerWork() calls select().
	The two functions below provide a possibility to interrupt
	the call to select(). After the interruption, resume
	by calling FreeRTOS_TCPServerWork() again. */
	BaseType_t FreeRTOS_TCPServerSignal( TCPServer_t *pxServer )
	{
	BaseType_t xIndex;
	BaseType_t xResult = pdFALSE;
	for( xIndex = 0; xIndex < pxServer->xServerCount; xIndex++ )
	{
	if( pxServer->xServers[ xIndex ].xSocket != FREERTOS_NO_SOCKET )
	{
	FreeRTOS_SignalSocket( pxServer->xServers[ xIndex ].xSocket );
	xResult = pdTRUE;
	break;
	}
	}

	return xResult;
	}

	#endif /* ipconfigSUPPORT_SIGNALS */
	/-----------------------------------------------------------/

	#if( ipconfigSUPPORT_SIGNALS != 0 )

	/* Same as above: this function may be called from an ISR,
	for instance a GPIO interrupt. */
	BaseType_t FreeRTOS_TCPServerSignalFromISR( TCPServer_t pxServer, BaseType_t pxHigherPriorityTaskWoken )
	{
	BaseType_t xIndex;
	BaseType_t xResult = pdFALSE;
	for( xIndex = 0; xIndex < pxServer->xServerCount; xIndex++ )
	{
	if( pxServer->xServers[ xIndex ].xSocket != FREERTOS_NO_SOCKET )
	{
	FreeRTOS_SignalSocketFromISR( pxServer->xServers[ xIndex ].xSocket, pxHigherPriorityTaskWoken );
	xResult = pdTRUE;
	break;
	}
	}

	return xResult;
	}
	#endif /* ipconfigSUPPORT_SIGNALS */
	/-----------------------------------------------------------/

	#endif /* ( ipconfigUSE_TCP == 1 ) && ( ( ipconfigUSE_HTTP == 1 ) \|\| ( ipconfigUSE_FTP == 1 ) ) */