X-Git-Url: https://git.sur5r.net/?p=freertos;a=blobdiff_plain;f=FreeRTOS-Plus%2FDemo%2FFreeRTOS_IoT_Libraries%2Ftask_pool%2FDemoTasks%2FSimpleUDPClientAndServer.c;fp=FreeRTOS-Plus%2FDemo%2FFreeRTOS_IoT_Libraries%2Ftask_pool%2FDemoTasks%2FSimpleUDPClientAndServer.c;h=0000000000000000000000000000000000000000;hp=54143c367594f74089c5c3817f2306a9f223919e;hb=b15dfacb6026af3b0ba697e5753844923b468d2b;hpb=4334233a064299a09d167a497889d3860932a587 diff --git a/FreeRTOS-Plus/Demo/FreeRTOS_IoT_Libraries/task_pool/DemoTasks/SimpleUDPClientAndServer.c b/FreeRTOS-Plus/Demo/FreeRTOS_IoT_Libraries/task_pool/DemoTasks/SimpleUDPClientAndServer.c deleted file mode 100644 index 54143c367..000000000 --- a/FreeRTOS-Plus/Demo/FreeRTOS_IoT_Libraries/task_pool/DemoTasks/SimpleUDPClientAndServer.c +++ /dev/null @@ -1,355 +0,0 @@ -/* - * FreeRTOS Kernel V10.2.1 - * 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://www.FreeRTOS.org - * http://aws.amazon.com/freertos - * - * 1 tab == 4 spaces! - */ - -/* - * Creates two transmitting tasks and two receiving tasks. The transmitting - * tasks send values that are received by the receiving tasks. One set of tasks - * uses the standard API. The other set of tasks uses the zero copy API. - * - * See the following web page for essential demo usage and configuration - * details: - * http://www.FreeRTOS.org/FreeRTOS-Plus/FreeRTOS_Plus_TCP/examples_FreeRTOS_simulator.html - */ - -/* Standard includes. */ -#include -#include - -/* FreeRTOS includes. */ -#include "FreeRTOS.h" -#include "task.h" - -/* FreeRTOS+TCP includes. */ -#include "FreeRTOS_IP.h" -#include "FreeRTOS_Sockets.h" - -#define simpTINY_DELAY ( ( TickType_t ) 2 ) - -/* - * Uses a socket to send data without using the zero copy option. - * prvSimpleServerTask() will receive the data. - */ -static void prvSimpleClientTask( void *pvParameters ); - -/* - * Uses a socket to receive the data sent by the prvSimpleClientTask() task. - * Does not use the zero copy option. - */ -static void prvSimpleServerTask( void *pvParameters ); - -/* - * Uses a socket to send data using the zero copy option. - * prvSimpleZeroCopyServerTask() will receive the data. - */ -static void prvSimpleZeroCopyUDPClientTask( void *pvParameters ); - -/* - * Uses a socket to receive the data sent by the prvSimpleZeroCopyUDPClientTask() - * task. Uses the zero copy option. - */ -static void prvSimpleZeroCopyServerTask( void *pvParameters ); - -/*-----------------------------------------------------------*/ - -void vStartSimpleUDPClientServerTasks( uint16_t usStackSize, uint32_t ulPort, UBaseType_t uxPriority ) -{ - /* Create the client and server tasks that do not use the zero copy - interface. */ - xTaskCreate( prvSimpleClientTask, "SimpCpyClnt", usStackSize, ( void * ) ulPort, uxPriority, NULL ); - xTaskCreate( prvSimpleServerTask, "SimpCpySrv", usStackSize, ( void * ) ulPort, uxPriority + 1, NULL ); - - /* Create the client and server tasks that do use the zero copy interface. */ - xTaskCreate( prvSimpleZeroCopyUDPClientTask, "SimpZCpyClnt", usStackSize, ( void * ) ( ulPort + 1 ), uxPriority, NULL ); - xTaskCreate( prvSimpleZeroCopyServerTask, "SimpZCpySrv", usStackSize, ( void * ) ( ulPort + 1 ), uxPriority + 1, NULL ); -} -/*-----------------------------------------------------------*/ - -static void prvSimpleClientTask( void *pvParameters ) -{ -Socket_t xClientSocket; -struct freertos_sockaddr xDestinationAddress; -uint8_t cString[ 65 ]; -BaseType_t lReturned; -uint32_t ulCount = 0UL, ulIPAddress; -const uint32_t ulLoopsPerSocket = 10UL; -const TickType_t x150ms = 150UL / portTICK_PERIOD_MS; - - /* Remove compiler warning about unused parameters. */ - ( void ) pvParameters; - - /* It is assumed that this task is not created until the network is up, - so the IP address can be obtained immediately. store the IP address being - used in ulIPAddress. This is done so the socket can send to a different - port on the same IP address. */ - FreeRTOS_GetAddressConfiguration( &ulIPAddress, NULL, NULL, NULL ); - - /* This test sends to itself, so data sent from here is received by a server - socket on the same IP address. Setup the freertos_sockaddr structure with - this nodes IP address, and the port number being sent to. The strange - casting is to try and remove compiler warnings on 32 bit machines. */ - xDestinationAddress.sin_addr = ulIPAddress; - xDestinationAddress.sin_port = ( uint16_t ) ( ( uint32_t ) pvParameters ) & 0xffffUL; - xDestinationAddress.sin_port = FreeRTOS_htons( xDestinationAddress.sin_port ); - - for( ;; ) - { - /* Create the socket. */ - xClientSocket = FreeRTOS_socket( FREERTOS_AF_INET, FREERTOS_SOCK_DGRAM, FREERTOS_IPPROTO_UDP ); - configASSERT( xClientSocket != FREERTOS_INVALID_SOCKET ); - - /* The count is used to differentiate between different messages sent to - the server, and to break out of the do while loop below. */ - ulCount = 0UL; - - do - { - /* Create the string that is sent to the server. */ - sprintf( ( char * ) cString, "Server received (not zero copy): Message number %lu\r\n", ulCount ); - - /* Send the string to the socket. ulFlags is set to 0, so the zero - copy option is not selected. That means the data from cString[] is - copied into a network buffer inside FreeRTOS_sendto(), and cString[] - can be reused as soon as FreeRTOS_sendto() has returned. */ - lReturned = FreeRTOS_sendto( xClientSocket, ( void * ) cString, strlen( ( const char * ) cString ), 0, &xDestinationAddress, sizeof( xDestinationAddress ) ); - - ulCount++; - - } while( ( lReturned != FREERTOS_SOCKET_ERROR ) && ( ulCount < ulLoopsPerSocket ) ); - - FreeRTOS_closesocket( xClientSocket ); - - /* A short delay to prevent the messages printed by the server task - scrolling off the screen too quickly, and to prevent reduce the network - loading. */ - vTaskDelay( x150ms ); - } -} -/*-----------------------------------------------------------*/ - -static void prvSimpleServerTask( void *pvParameters ) -{ -int32_t lBytes; -uint8_t cReceivedString[ 60 ]; -struct freertos_sockaddr xClient, xBindAddress; -uint32_t xClientLength = sizeof( xClient ); -Socket_t xListeningSocket; - - /* Just to prevent compiler warnings. */ - ( void ) pvParameters; - - /* Attempt to open the socket. */ - xListeningSocket = FreeRTOS_socket( FREERTOS_AF_INET, FREERTOS_SOCK_DGRAM, FREERTOS_IPPROTO_UDP ); - configASSERT( xListeningSocket != FREERTOS_INVALID_SOCKET ); - - /* This test receives data sent from a different port on the same IP - address. Configure the freertos_sockaddr structure with the address being - bound to. The strange casting is to try and remove compiler warnings on 32 - bit machines. Note that this task is only created after the network is up, - so the IP address is valid here. */ - xBindAddress.sin_port = ( uint16_t ) ( ( uint32_t ) pvParameters ) & 0xffffUL; - xBindAddress.sin_port = FreeRTOS_htons( xBindAddress.sin_port ); - - /* Bind the socket to the port that the client task will send to. */ - FreeRTOS_bind( xListeningSocket, &xBindAddress, sizeof( xBindAddress ) ); - - for( ;; ) - { - /* Zero out the receive array so there is NULL at the end of the string - when it is printed out. */ - memset( cReceivedString, 0x00, sizeof( cReceivedString ) ); - - /* Receive data on the socket. ulFlags is zero, so the zero copy option - is not set and the received data is copied into the buffer pointed to by - cReceivedString. By default the block time is portMAX_DELAY. - xClientLength is not actually used by FreeRTOS_recvfrom(), but is set - appropriately in case future versions do use it. */ - lBytes = FreeRTOS_recvfrom( xListeningSocket, cReceivedString, sizeof( cReceivedString ), 0, &xClient, &xClientLength ); - - /* Error check. */ - configASSERT( lBytes == ( BaseType_t ) strlen( ( const char * ) cReceivedString ) ); - } -} -/*-----------------------------------------------------------*/ - -static void prvSimpleZeroCopyUDPClientTask( void *pvParameters ) -{ -Socket_t xClientSocket; -uint8_t *pucUDPPayloadBuffer; -struct freertos_sockaddr xDestinationAddress; -BaseType_t lReturned; -uint32_t ulCount = 0UL, ulIPAddress; -const uint32_t ulLoopsPerSocket = 10UL; -const char *pcStringToSend = "Server received (using zero copy): Message number "; -const TickType_t x150ms = 150UL / portTICK_PERIOD_MS; -/* 15 is added to ensure the number, \r\n and terminating zero fit. */ -const size_t xStringLength = strlen( pcStringToSend ) + 15; - - /* Remove compiler warning about unused parameters. */ - ( void ) pvParameters; - - /* It is assumed that this task is not created until the network is up, - so the IP address can be obtained immediately. store the IP address being - used in ulIPAddress. This is done so the socket can send to a different - port on the same IP address. */ - FreeRTOS_GetAddressConfiguration( &ulIPAddress, NULL, NULL, NULL ); - - /* This test sends to itself, so data sent from here is received by a server - socket on the same IP address. Setup the freertos_sockaddr structure with - this nodes IP address, and the port number being sent to. The strange - casting is to try and remove compiler warnings on 32 bit machines. */ - xDestinationAddress.sin_addr = ulIPAddress; - xDestinationAddress.sin_port = ( uint16_t ) ( ( uint32_t ) pvParameters ) & 0xffffUL; - xDestinationAddress.sin_port = FreeRTOS_htons( xDestinationAddress.sin_port ); - - for( ;; ) - { - /* Create the socket. */ - xClientSocket = FreeRTOS_socket( FREERTOS_AF_INET, FREERTOS_SOCK_DGRAM, FREERTOS_IPPROTO_UDP ); - configASSERT( xClientSocket != FREERTOS_INVALID_SOCKET ); - - /* The count is used to differentiate between different messages sent to - the server, and to break out of the do while loop below. */ - ulCount = 0UL; - - do - { - /* This task is going to send using the zero copy interface. The - data being sent is therefore written directly into a buffer that is - passed into, rather than copied into, the FreeRTOS_sendto() - function. - - First obtain a buffer of adequate length from the IP stack into which - the string will be written. Although a max delay is used, the actual - delay will be capped to ipconfigMAX_SEND_BLOCK_TIME_TICKS, hence - the do while loop is used to ensure a buffer is obtained. */ - do - { - } while( ( pucUDPPayloadBuffer = ( uint8_t * ) FreeRTOS_GetUDPPayloadBuffer( xStringLength, portMAX_DELAY ) ) == NULL ); - - /* A buffer was successfully obtained. Create the string that is - sent to the server. First the string is filled with zeros as this will - effectively be the null terminator when the string is received at the other - end. Note that the string is being written directly into the buffer - obtained from the IP stack above. */ - memset( ( void * ) pucUDPPayloadBuffer, 0x00, xStringLength ); - sprintf( ( char * ) pucUDPPayloadBuffer, "%s%lu\r\n", pcStringToSend, ulCount ); - - /* Pass the buffer into the send function. ulFlags has the - FREERTOS_ZERO_COPY bit set so the IP stack will take control of the - buffer rather than copy data out of the buffer. */ - lReturned = FreeRTOS_sendto( xClientSocket, /* The socket being sent to. */ - ( void * ) pucUDPPayloadBuffer, /* A pointer to the the data being sent. */ - strlen( ( const char * ) pucUDPPayloadBuffer ) + 1, /* The length of the data being sent - including the string's null terminator. */ - FREERTOS_ZERO_COPY, /* ulFlags with the FREERTOS_ZERO_COPY bit set. */ - &xDestinationAddress, /* Where the data is being sent. */ - sizeof( xDestinationAddress ) ); - - if( lReturned == 0 ) - { - /* The send operation failed, so this task is still responsible - for the buffer obtained from the IP stack. To ensure the buffer - is not lost it must either be used again, or, as in this case, - returned to the IP stack using FreeRTOS_ReleaseUDPPayloadBuffer(). - pucUDPPayloadBuffer can be safely re-used after this call. */ - FreeRTOS_ReleaseUDPPayloadBuffer( ( void * ) pucUDPPayloadBuffer ); - } - else - { - /* The send was successful so the IP stack is now managing the - buffer pointed to by pucUDPPayloadBuffer, and the IP stack will - return the buffer once it has been sent. pucUDPPayloadBuffer can - be safely re-used. */ - } - - ulCount++; - - } while( ( lReturned != FREERTOS_SOCKET_ERROR ) && ( ulCount < ulLoopsPerSocket ) ); - - FreeRTOS_closesocket( xClientSocket ); - - /* A short delay to prevent the messages scrolling off the screen too - quickly. */ - vTaskDelay( x150ms ); - } -} -/*-----------------------------------------------------------*/ - -static void prvSimpleZeroCopyServerTask( void *pvParameters ) -{ -int32_t lBytes; -uint8_t *pucUDPPayloadBuffer; -struct freertos_sockaddr xClient, xBindAddress; -uint32_t xClientLength = sizeof( xClient ), ulIPAddress; -Socket_t xListeningSocket; - - /* Just to prevent compiler warnings. */ - ( void ) pvParameters; - - /* Attempt to open the socket. */ - xListeningSocket = FreeRTOS_socket( FREERTOS_AF_INET, FREERTOS_SOCK_DGRAM, FREERTOS_IPPROTO_UDP ); - configASSERT( xListeningSocket != FREERTOS_INVALID_SOCKET ); - - /* This test receives data sent from a different port on the same IP address. - Obtain the nodes IP address. Configure the freertos_sockaddr structure with - the address being bound to. The strange casting is to try and remove - compiler warnings on 32 bit machines. Note that this task is only created - after the network is up, so the IP address is valid here. */ - FreeRTOS_GetAddressConfiguration( &ulIPAddress, NULL, NULL, NULL ); - xBindAddress.sin_addr = ulIPAddress; - xBindAddress.sin_port = ( uint16_t ) ( ( uint32_t ) pvParameters ) & 0xffffUL; - xBindAddress.sin_port = FreeRTOS_htons( xBindAddress.sin_port ); - - /* Bind the socket to the port that the client task will send to. */ - FreeRTOS_bind( xListeningSocket, &xBindAddress, sizeof( xBindAddress ) ); - - for( ;; ) - { - /* Receive data on the socket. ulFlags has the zero copy bit set - (FREERTOS_ZERO_COPY) indicating to the stack that a reference to the - received data should be passed out to this task using the second - parameter to the FreeRTOS_recvfrom() call. When this is done the - IP stack is no longer responsible for releasing the buffer, and - the task *must* return the buffer to the stack when it is no longer - needed. By default the block time is portMAX_DELAY. */ - lBytes = FreeRTOS_recvfrom( xListeningSocket, ( void * ) &pucUDPPayloadBuffer, 0, FREERTOS_ZERO_COPY, &xClient, &xClientLength ); - - /* Print the received characters. */ - if( lBytes > 0 ) - { - /* It is expected to receive one more byte than the string length as - the NULL terminator is also transmitted. */ - configASSERT( lBytes == ( ( BaseType_t ) strlen( ( const char * ) pucUDPPayloadBuffer ) + 1 ) ); - } - - if( lBytes >= 0 ) - { - /* The buffer *must* be freed once it is no longer needed. */ - FreeRTOS_ReleaseUDPPayloadBuffer( pucUDPPayloadBuffer ); - } - } -} -