Author: RichardBarry

FreeRTOS-Plus/Demo/Also_See_More_FreeRTOS+TCP_and_FreeRTOS_FAT_in_the_lab.url

@@ -0,0 +1,5 @@
+[{000214A0-0000-0000-C000-000000000046}]
+Prop3=19,2
+[InternetShortcut]
+URL=http://www.freertos.org/labs
+IDList=

FreeRTOS-Plus/Demo/Common/Demo_IP_Protocols/Common/FreeRTOS_TCP_server.c

@@ -0,0 +1,353 @@
+/*
+ * 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_NO_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 ) ) */