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@RichardBarry
RichardBarry committed Jul 25, 2019
1 parent 7b70a2c commit b7be189
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5 changes: 5 additions & 0 deletions 190725_FreeRTOS_IoT_Libs_Task_Pool_and_MQTT_Preview/FreeRTOS+TCP.url
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[{000214A0-0000-0000-C000-000000000046}]
Prop3=19,2
[InternetShortcut]
URL=http://www.freertos.org/FreeRTOS-Plus/FreeRTOS_Plus_TCP/index.html
IDList=
5 changes: 5 additions & 0 deletions ...QTT_Preview/FreeRTOS-Plus/Demo/Also_See_More_FreeRTOS+TCP_and_FreeRTOS_FAT_in_the_lab.url
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[{000214A0-0000-0000-C000-000000000046}]
Prop3=19,2
[InternetShortcut]
URL=http://www.freertos.org/labs
IDList=
353 changes: 353 additions & 0 deletions ...and_MQTT_Preview/FreeRTOS-Plus/Demo/Common/Demo_IP_Protocols/Common/FreeRTOS_TCP_server.c
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/*
* 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 ) ) */
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