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Simplify the mqtt multitasking demo a little (#398)

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RichardBarry 4 years ago committed by GitHub
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298
FreeRTOS-Plus/Demo/coreMQTT_Windows_Simulator/MQTT_Multitask/DemoTasks/MultitaskMQTTExample.c
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@ -24,26 +24,44 @@
*/ */
/* /*
* Demo for showing use of the managed MQTT API shared between multiple tasks. * This demo shows how to use coreMQTT in a multithreaded environment - it does not
* This demo uses a thread safe queue to hold commands for interacting with the * yet go as far as encapsulating the MQTT library within its own agent (or daemon)
* MQTT API. There are four tasks to note in this demo: * task - although the prvCommandLoop() function demonstrates how that might be done.
* - A command (main) task for processing commands from the command queue while * In this task prvCommandLoop() is only executed from a single thread and is the
* other tasks enqueue them. This task enters a loop, during which it processes * only function that is allowed to use the coreMQTT API directly. Anything else
* commands from the command queue. If a termination command is received, it * needing to interact with the coreMQTT API does so by posting commands to
* will break from the loop. * prvCommandLoop() via a queue. Future coreMQTT releases will build an agent into
* - A publisher task for synchronous publishes. This task creates a series of * the library itself, and then encapsulate the queues into the implementation of a
* publish operations to push to the command queue, which are then executed * thread safe coreMQTT API.
* by the command task. This task uses synchronous publishes, meaning it will *
* wait for each publish to complete before scheduling the next one. * To use this demo with TLS set democonfigUSE_TLS to 1. To use this demo without
* - A publisher task for asynchronous publishes. The difference between this * TLS (so plain text) set democonfigUSE_TLS to 0. democonfigUSE_TLS is defined
* task and the previous is that it will not wait for completion before * in demo_config.h.
* scheduling the next publish, and checks them after all publishes have been *
* enqueued. Note that the distinction between synchronous and asynchronous *!!! Plain text connections are only used for ease of demonstration. Do not send
* publishes is only in the behavior of the task, not in the actual publish *!!! sensitive data on unencrypted connections. Production devices should used
* command. *!!! mutually authenticated and encrypted connections.
* - A subscriber task that creates an MQTT subscription to a topic filter *
* matching the topics published on by the publishers. It loops while waiting * There are four tasks to note in this demo:
* for publish messages to be received. * - prvMQTTDemoTask() manages multiple iterations of the demo. Each iteration
* creates the other tasks, calls prvCommandLoop() to handle the MQTT traffic,
* then cleans up ready for the next iteration.
* - prvSyncPublishTask() which demonstrates synchronous publishes. The task creates
* a series of publish operations that are sent over the command queue to be
* processed by prvCommandLoop(), waiting for each publish to complete before
* sending the next.
* - prvAsyncPublishTask() which demonstrates asynchronous publishes. Like
* prvSyncPublishTask(), the task creates a series of publish operations that are
* sent over the command queue to be processed by prvCommandLoop(), but unlike
* prvSyncPublishTask() this task does not wait for each publish to be complete
* until after all the publish commands are sent. Note that the distinction
* between synchronous and asynchronous publishes is only in the behavior of the
* task, not in the actual publish command.
* - prvSubscribeTask() which creates an MQTT subscription to a topic filter
* matching the topics published on by the two publishing tasks, and in doing so,
* ensures the demo received a publish command back for each publish command it
* sends. It loops while waiting for publish messages to be received.
*
* Tasks can have queues to hold received publish messages, and the command task * Tasks can have queues to hold received publish messages, and the command task
* will push incoming publishes to the queue of each task that is subscribed to * will push incoming publishes to the queue of each task that is subscribed to
* the incoming topic. * the incoming topic.
@ -83,70 +101,6 @@
/** /**
* These configuration settings are required to run the demo. * These configuration settings are required to run the demo.
*/ */
#ifndef democonfigCLIENT_IDENTIFIER
/**
* @brief The MQTT client identifier used in this example. Each client identifier
* must be unique so edit as required to ensure no two clients connecting to the
* same broker use the same client identifier.
*
* @note Appending __TIME__ to the client id string will reduce the possibility of a
* client id collision in the broker. Note that the appended time is the compilation
* time. This client id can cause collision, if more than one instance of the same
* binary is used at the same time to connect to the broker.
*/
#define democonfigCLIENT_IDENTIFIER "testClient"__TIME__
#endif
/* Compile time error for some undefined configs, and provide default values
* for others. */
#ifndef democonfigMQTT_BROKER_ENDPOINT
#error "Please define democonfigMQTT_BROKER_ENDPOINT in demo_config.h."
#endif
#if defined( democonfigUSE_TLS ) && ( democonfigUSE_TLS == 1 )
#ifndef democonfigROOT_CA_PEM
#error "Please define Root CA certificate of the MQTT broker(democonfigROOT_CA_PEM) in demo_config.h."
#endif
/* If no username is defined, then a client certificate/key is required. */
#ifndef democonfigCLIENT_USERNAME
/*
*!!! Please note democonfigCLIENT_PRIVATE_KEY_PEM in used for
*!!! convenience of demonstration only. Production devices should
*!!! store keys securely, such as within a secure element.
*/
#ifndef democonfigCLIENT_CERTIFICATE_PEM
#error "Please define client certificate(democonfigCLIENT_CERTIFICATE_PEM) in demo_config.h."
#endif
#ifndef democonfigCLIENT_PRIVATE_KEY_PEM
#error "Please define client private key(democonfigCLIENT_PRIVATE_KEY_PEM) in demo_config.h."
#endif
#else
/* If a username is defined, a client password also would need to be defined for
* client authentication. */
#ifndef democonfigCLIENT_PASSWORD
#error "Please define client password(democonfigCLIENT_PASSWORD) in demo_config.h for client authentication based on username/password."
#endif
/* AWS IoT MQTT broker port needs to be 443 for client authentication based on
* username/password. */
#if defined( democonfigUSE_AWS_IOT_CORE_BROKER ) && democonfigMQTT_BROKER_PORT != 443
#error "Broker port(democonfigMQTT_BROKER_PORT) should be defined as 443 in demo_config.h for client authentication based on username/password in AWS IoT Core."
#endif
#endif /* ifndef democonfigCLIENT_USERNAME */
#ifndef democonfigMQTT_BROKER_PORT
#define democonfigMQTT_BROKER_PORT ( 8883 )
#endif
#else /* if defined( democonfigUSE_TLS ) && ( democonfigUSE_TLS == 1 ) */
#ifndef democonfigMQTT_BROKER_PORT
#define democonfigMQTT_BROKER_PORT ( 1883 )
#endif
#endif /* if defined( democonfigUSE_TLS ) && ( democonfigUSE_TLS == 1 ) */
/** /**
* @brief The size to use for the network buffer. * @brief The size to use for the network buffer.
@ -155,73 +109,6 @@
#define mqttexampleNETWORK_BUFFER_SIZE ( 1024U ) #define mqttexampleNETWORK_BUFFER_SIZE ( 1024U )
#endif #endif
/**
* @brief ALPN (Application-Layer Protocol Negotiation) protocol name for AWS IoT MQTT.
*
* This will be used if democonfigMQTT_BROKER_PORT is configured as 443 for the AWS IoT MQTT broker.
* Please see more details about the ALPN protocol for AWS IoT MQTT endpoint
* in the link below.
* https://aws.amazon.com/blogs/iot/mqtt-with-tls-client-authentication-on-port-443-why-it-is-useful-and-how-it-works/
*/
#define AWS_IOT_MQTT_ALPN "\x0ex-amzn-mqtt-ca"
/**
* @brief This is the ALPN (Application-Layer Protocol Negotiation) string
* required by AWS IoT for password-based authentication using TCP port 443.
*/
#define AWS_IOT_CUSTOM_AUTH_ALPN "\x04mqtt"
/**
* Provide default values for undefined configuration settings.
*/
#ifndef democonfigOS_NAME
#define democonfigOS_NAME "FreeRTOS"
#endif
#ifndef democonfigOS_VERSION
#define democonfigOS_VERSION tskKERNEL_VERSION_NUMBER
#endif
#ifndef democonfigHARDWARE_PLATFORM_NAME
#define democonfigHARDWARE_PLATFORM_NAME "WinSim"
#endif
#ifndef democonfigMQTT_LIB
#define democonfigMQTT_LIB "core-mqtt@1.0.0"
#endif
/**
* @brief The MQTT metrics string expected by AWS IoT.
*/
#define AWS_IOT_METRICS_STRING \
"?SDK=" democonfigOS_NAME "&Version=" democonfigOS_VERSION \
"&Platform=" democonfigHARDWARE_PLATFORM_NAME "&MQTTLib=" democonfigMQTT_LIB
/**
* @brief The length of the MQTT metrics string expected by AWS IoT.
*/
#define AWS_IOT_METRICS_STRING_LENGTH ( ( uint16_t ) ( sizeof( AWS_IOT_METRICS_STRING ) - 1 ) )
#ifdef democonfigCLIENT_USERNAME
/**
* @brief Append the username with the metrics string if #democonfigCLIENT_USERNAME is defined.
*
* This is to support both metrics reporting and username/password based client
* authentication by AWS IoT.
*/
#define CLIENT_USERNAME_WITH_METRICS democonfigCLIENT_USERNAME AWS_IOT_METRICS_STRING
#endif
/**
* @brief Length of client identifier.
*/
#define democonfigCLIENT_IDENTIFIER_LENGTH ( ( uint16_t ) ( sizeof( democonfigCLIENT_IDENTIFIER ) - 1 ) )
/**
* @brief Length of MQTT server host name.
*/
#define democonfigBROKER_ENDPOINT_LENGTH ( ( uint16_t ) ( sizeof( democonfigMQTT_BROKER_ENDPOINT ) - 1 ) )
/** /**
* @brief Timeout for receiving CONNACK packet in milliseconds. * @brief Timeout for receiving CONNACK packet in milliseconds.
@ -532,13 +419,6 @@ static BaseType_t prvSocketDisconnect( NetworkContext_t * pxNetworkContext );
*/ */
static void prvMQTTClientSocketWakeupCallback( Socket_t pxSocket ); static void prvMQTTClientSocketWakeupCallback( Socket_t pxSocket );
/**
* @brief Initialize context for a command.
*
* @param[in] pxContext Context to initialize.
*/
static void prvInitializeCommandContext( CommandContext_t * pxContext );
/** /**
* @brief Track an operation by adding it to a list, indicating it is anticipating * @brief Track an operation by adding it to a list, indicating it is anticipating
* an acknowledgment. * an acknowledgment.
@ -768,6 +648,14 @@ static void prvMQTTDemoTask( void * pvParameters );
*/ */
static uint32_t prvGetTimeMs( void ); static uint32_t prvGetTimeMs( void );
/**
* @brief Cleans any persistent sessions that may already exist
* This demo uses a persistent session that can be re-connected if disconnected.
* Clean any lingering sessions that may exist from previous executions of the
* demo.
*/
static void prvCleanExistingPersistentSession( void );
/*-----------------------------------------------------------*/ /*-----------------------------------------------------------*/
/** /**
@ -1049,7 +937,7 @@ static MQTTStatus_t prvResumeSession( bool xSessionPresent )
/* Resubscribe if needed. */ /* Resubscribe if needed. */
if( j > 0 ) if( j > 0 )
{ {
prvInitializeCommandContext( &xResubscribeContext ); memset( ( void * ) &xResubscribeContext, 0x00, sizeof( xResubscribeContext ) );
xResubscribeContext.pxSubscribeInfo = pxResendSubscriptions; xResubscribeContext.pxSubscribeInfo = pxResendSubscriptions;
xResubscribeContext.ulSubscriptionCount = j; xResubscribeContext.ulSubscriptionCount = j;
/* Set to NULL so existing queues will not be overwritten. */ /* Set to NULL so existing queues will not be overwritten. */
@ -1221,18 +1109,6 @@ static void prvMQTTClientSocketWakeupCallback( Socket_t pxSocket )
/*-----------------------------------------------------------*/ /*-----------------------------------------------------------*/
static void prvInitializeCommandContext( CommandContext_t * pxContext )
{
pxContext->xIsComplete = false;
pxContext->pxResponseQueue = NULL;
pxContext->xReturnStatus = MQTTSuccess;
pxContext->pxPublishInfo = NULL;
pxContext->pxSubscribeInfo = NULL;
pxContext->ulSubscriptionCount = 0;
}
/*-----------------------------------------------------------*/
static bool prvAddAwaitingOperation( uint16_t usPacketId, static bool prvAddAwaitingOperation( uint16_t usPacketId,
Command_t * pxCommand ) Command_t * pxCommand )
{ {
@ -1742,7 +1618,6 @@ static void prvCommandLoop( void )
{ {
Command_t xCommand; Command_t xCommand;
Command_t xNewCommand; Command_t xNewCommand;
Command_t * pxCommand;
MQTTStatus_t xStatus = MQTTSuccess; MQTTStatus_t xStatus = MQTTSuccess;
static int lNumProcessed = 0; static int lNumProcessed = 0;
bool xTerminateReceived = false; bool xTerminateReceived = false;
@ -1758,9 +1633,7 @@ static void prvCommandLoop( void )
continue; continue;
} }
pxCommand = &xCommand; xStatus = prvProcessCommand( &xCommand );
xStatus = prvProcessCommand( pxCommand );
/* Add connect operation to front of queue if status was not successful. */ /* Add connect operation to front of queue if status was not successful. */
if( xStatus != MQTTSuccess ) if( xStatus != MQTTSuccess )
@ -1778,15 +1651,17 @@ static void prvCommandLoop( void )
/* Delay after sending a subscribe. This is to so that the broker /* Delay after sending a subscribe. This is to so that the broker
* creates a subscription for us before processing our next publish, * creates a subscription for us before processing our next publish,
* which should be immediately after this. */ * which should be immediately after this. Only required because the
if( pxCommand->xCommandType == SUBSCRIBE ) * subscribe and publish commands are coming from separate tasks, which
* would not normally be the case. */
if( xCommand.xCommandType == SUBSCRIBE )
{ {
LogDebug( ( "Sleeping for %d ms after sending SUBSCRIBE packet.", mqttexampleSUBSCRIBE_TASK_DELAY_MS ) ); LogDebug( ( "Sleeping for %d ms after sending SUBSCRIBE packet.", mqttexampleSUBSCRIBE_TASK_DELAY_MS ) );
vTaskDelay( mqttexampleSUBSCRIBE_TASK_DELAY_MS ); vTaskDelay( mqttexampleSUBSCRIBE_TASK_DELAY_MS );
} }
/* Terminate the loop if we receive the termination command. */ /* Terminate the loop if we receive the termination command. */
if( pxCommand->xCommandType == TERMINATE ) if( xCommand.xCommandType == TERMINATE )
{ {
xTerminateReceived = true; xTerminateReceived = true;
break; break;
@ -1800,8 +1675,7 @@ static void prvCommandLoop( void )
configASSERT( xTerminateReceived == true ); configASSERT( xTerminateReceived == true );
LogInfo( ( "Creating Disconnect operation." ) ); LogInfo( ( "Creating Disconnect operation." ) );
prvCreateCommand( DISCONNECT, NULL, NULL, &xNewCommand ); MQTT_Disconnect( &globalMqttContext );
prvProcessCommand( &xNewCommand );
LogInfo( ( "Disconnected from broker." ) ); LogInfo( ( "Disconnected from broker." ) );
} }
@ -1873,7 +1747,7 @@ void prvSyncPublishTask( void * pvParameters )
snprintf( topicBuf, mqttexampleDEMO_BUFFER_SIZE, mqttexamplePUBLISH_TOPIC_FORMAT_STRING, "sync", i + 1 ); snprintf( topicBuf, mqttexampleDEMO_BUFFER_SIZE, mqttexamplePUBLISH_TOPIC_FORMAT_STRING, "sync", i + 1 );
xPublishInfo.topicNameLength = ( uint16_t ) strlen( topicBuf ); xPublishInfo.topicNameLength = ( uint16_t ) strlen( topicBuf );
prvInitializeCommandContext( &xContext ); memset( ( void * ) &xContext, 0x00, sizeof( xContext ) );
xContext.xTaskToNotify = xTaskGetCurrentTaskHandle(); xContext.xTaskToNotify = xTaskGetCurrentTaskHandle();
xContext.ulNotificationBit = 1 << i; xContext.ulNotificationBit = 1 << i;
xContext.pxPublishInfo = &xPublishInfo; xContext.pxPublishInfo = &xPublishInfo;
@ -1935,7 +1809,7 @@ void prvAsyncPublishTask( void * pvParameters )
for( int i = 0; i < mqttexamplePUBLISH_COUNT / 2; i++ ) for( int i = 0; i < mqttexamplePUBLISH_COUNT / 2; i++ )
{ {
pxContexts[ i ] = ( CommandContext_t * ) pvPortMalloc( sizeof( CommandContext_t ) ); pxContexts[ i ] = ( CommandContext_t * ) pvPortMalloc( sizeof( CommandContext_t ) );
prvInitializeCommandContext( pxContexts[ i ] ); memset( ( void * ) pxContexts[ i ], 0x00, sizeof( pxContexts[ i ] ) );
pxContexts[ i ]->xTaskToNotify = xTaskGetCurrentTaskHandle(); pxContexts[ i ]->xTaskToNotify = xTaskGetCurrentTaskHandle();
/* Set the notification bit to be the publish number. This prevents this demo /* Set the notification bit to be the publish number. This prevents this demo
@ -2023,7 +1897,7 @@ void prvSubscribeTask( void * pvParameters )
LogInfo( ( "Topic filter: %.*s", xSubscribeInfo.topicFilterLength, xSubscribeInfo.pTopicFilter ) ); LogInfo( ( "Topic filter: %.*s", xSubscribeInfo.topicFilterLength, xSubscribeInfo.pTopicFilter ) );
/* Create the context and subscribe command. */ /* Create the context and subscribe command. */
prvInitializeCommandContext( &xContext ); memset( &xContext, 0x00, sizeof( xContext ) );
xContext.pxResponseQueue = xSubscriberResponseQueue; xContext.pxResponseQueue = xSubscriberResponseQueue;
xContext.xTaskToNotify = xTaskGetCurrentTaskHandle(); xContext.xTaskToNotify = xTaskGetCurrentTaskHandle();
xContext.ulNotificationBit = mqttexampleSUBSCRIBE_COMPLETE_BIT; xContext.ulNotificationBit = mqttexampleSUBSCRIBE_COMPLETE_BIT;
@ -2097,7 +1971,7 @@ void prvSubscribeTask( void * pvParameters )
LogInfo( ( "Finished receiving\n" ) ); LogInfo( ( "Finished receiving\n" ) );
prvCreateCommand( UNSUBSCRIBE, &xContext, prvCommandCallback, &xCommand ); prvCreateCommand( UNSUBSCRIBE, &xContext, prvCommandCallback, &xCommand );
prvInitializeCommandContext( &xContext ); memset( ( void * ) &xContext, 0x00, sizeof( xContext ) );
xContext.pxResponseQueue = xSubscriberResponseQueue; xContext.pxResponseQueue = xSubscriberResponseQueue;
xContext.xTaskToNotify = xTaskGetCurrentTaskHandle(); xContext.xTaskToNotify = xTaskGetCurrentTaskHandle();
xContext.ulNotificationBit = mqttexampleUNSUBSCRIBE_COMPLETE_BIT; xContext.ulNotificationBit = mqttexampleUNSUBSCRIBE_COMPLETE_BIT;
@ -2131,12 +2005,38 @@ void prvSubscribeTask( void * pvParameters )
/*-----------------------------------------------------------*/ /*-----------------------------------------------------------*/
static void prvCleanExistingPersistentSession( void )
{
BaseType_t xNetworkStatus = pdFAIL;
MQTTStatus_t xMQTTStatus;
/* Connect to the broker. We connect here with the "clean session" flag set
* to true in order to clear any prior state in the broker. We will disconnect
* and later form a persistent session, so that it may be resumed if the
* network suddenly disconnects. */
xNetworkStatus = prvSocketConnect( &xNetworkContext );
configASSERT( xNetworkStatus == pdPASS );
LogInfo( ( "Creating a clean session to clear any broker state information." ) );
xMQTTStatus = prvMQTTInit( &globalMqttContext, &xNetworkContext );
configASSERT( xMQTTStatus == MQTTSuccess );
xMQTTStatus = prvMQTTConnect( &globalMqttContext, true );
configASSERT( xMQTTStatus == MQTTSuccess );
/* Disconnect. */
xMQTTStatus = MQTT_Disconnect( &globalMqttContext );
configASSERT( xMQTTStatus == MQTTSuccess );
xNetworkStatus = prvSocketDisconnect( &xNetworkContext );
configASSERT( xNetworkStatus == pdPASS );
}
/*-----------------------------------------------------------*/
static void prvMQTTDemoTask( void * pvParameters ) static void prvMQTTDemoTask( void * pvParameters )
{ {
BaseType_t xNetworkStatus = pdFAIL; BaseType_t xNetworkStatus = pdFAIL;
MQTTStatus_t xMQTTStatus;
BaseType_t xResult = pdFALSE; BaseType_t xResult = pdFALSE;
uint32_t ulNotification = 0; uint32_t ulNotification = 0;
MQTTStatus_t xMQTTStatus;
uint32_t ulExpectedNotifications = mqttexamplePUBLISHER_SYNC_COMPLETE_BIT | uint32_t ulExpectedNotifications = mqttexamplePUBLISHER_SYNC_COMPLETE_BIT |
mqttexampleSUBSCRIBE_TASK_COMPLETE_BIT | mqttexampleSUBSCRIBE_TASK_COMPLETE_BIT |
mqttexamplePUBLISHER_ASYNC_COMPLETE_BIT; mqttexamplePUBLISHER_ASYNC_COMPLETE_BIT;
@ -2156,23 +2056,10 @@ static void prvMQTTDemoTask( void * pvParameters )
* synchronization primitives. */ * synchronization primitives. */
xDefaultResponseQueue = xQueueCreate( 1, sizeof( PublishElement_t ) ); xDefaultResponseQueue = xQueueCreate( 1, sizeof( PublishElement_t ) );
/* Connect to the broker. We connect here with the "clean session" flag set /* This demo uses a persistent session that can be re-connected if disconnected.
* to true in order to clear any prior state in the broker. We will disconnect * Clean any lingering sessions that may exist from previous executions of the
* and later form a persistent session, so that it may be resumed if the * demo. */
* network suddenly disconnects. */ prvCleanExistingPersistentSession();
xNetworkStatus = prvSocketConnect( &xNetworkContext );
configASSERT( xNetworkStatus == pdPASS );
LogInfo( ( "Creating a clean session to clear any broker state information." ) );
xMQTTStatus = prvMQTTInit( &globalMqttContext, &xNetworkContext );
configASSERT( xMQTTStatus == MQTTSuccess );
xMQTTStatus = prvMQTTConnect( &globalMqttContext, true );
configASSERT( xMQTTStatus == MQTTSuccess );
/* Disconnect. */
xMQTTStatus = MQTT_Disconnect( &globalMqttContext );
configASSERT( xMQTTStatus == MQTTSuccess );
xNetworkStatus = prvSocketDisconnect( &xNetworkContext );
configASSERT( xNetworkStatus == pdPASS );
for( ; ; ) for( ; ; )
{ {
@ -2188,8 +2075,9 @@ static void prvMQTTDemoTask( void * pvParameters )
configASSERT( xMQTTStatus == MQTTSuccess ); configASSERT( xMQTTStatus == MQTTSuccess );
configASSERT( globalMqttContext.connectStatus == MQTTConnected ); configASSERT( globalMqttContext.connectStatus == MQTTConnected );
/* Give subscriber task higher priority so the subscribe will be processed before the first publish. /* Give subscriber task higher priority so the subscribe will be processed
* This must be less than or equal to the priority of the main task. */ * before the first publish. This must be less than or equal to the priority of
* the main task. */
xResult = xTaskCreate( prvSubscribeTask, "Subscriber", democonfigDEMO_STACKSIZE, NULL, tskIDLE_PRIORITY + 1, &xSubscribeTask ); xResult = xTaskCreate( prvSubscribeTask, "Subscriber", democonfigDEMO_STACKSIZE, NULL, tskIDLE_PRIORITY + 1, &xSubscribeTask );
configASSERT( xResult == pdPASS ); configASSERT( xResult == pdPASS );
xResult = xTaskCreate( prvSyncPublishTask, "SyncPublisher", democonfigDEMO_STACKSIZE, NULL, tskIDLE_PRIORITY, &xSyncPublisherTask ); xResult = xTaskCreate( prvSyncPublishTask, "SyncPublisher", democonfigDEMO_STACKSIZE, NULL, tskIDLE_PRIORITY, &xSyncPublisherTask );
@ -2218,7 +2106,7 @@ static void prvMQTTDemoTask( void * pvParameters )
xNetworkStatus = prvSocketDisconnect( &xNetworkContext ); xNetworkStatus = prvSocketDisconnect( &xNetworkContext );
configASSERT( xNetworkStatus == pdPASS ); configASSERT( xNetworkStatus == pdPASS );
LogInfo( ( "prvMQTTDemoTask() completed an iteration successfully. Total free heap is %u.\r\n", xPortGetFreeHeapSize() ) ); LogInfo( ( "\r\n\r\nprvMQTTDemoTask() completed an iteration successfully. Total free heap is %u.\r\n", xPortGetFreeHeapSize() ) );
LogInfo( ( "Demo completed successfully.\r\n" ) ); LogInfo( ( "Demo completed successfully.\r\n" ) );
LogInfo( ( "Short delay before starting the next iteration.... \r\n\r\n" ) ); LogInfo( ( "Short delay before starting the next iteration.... \r\n\r\n" ) );
vTaskDelay( mqttexampleDELAY_BETWEEN_DEMO_ITERATIONS ); vTaskDelay( mqttexampleDELAY_BETWEEN_DEMO_ITERATIONS );

142
FreeRTOS-Plus/Demo/coreMQTT_Windows_Simulator/MQTT_Multitask/demo_config.h
Unescape Escape View File

@ -259,4 +259,146 @@ extern void vLoggingPrintf( const char * pcFormatString,
*/ */
#define democonfigDEMO_STACKSIZE configMINIMAL_STACK_SIZE #define democonfigDEMO_STACKSIZE configMINIMAL_STACK_SIZE
/**********************************************************************************
* Error checks and derived values only below here - do not edit below here. -----*
**********************************************************************************/
/* Compile time error for some undefined configs, and provide default values
* for others. */
#ifndef democonfigMQTT_BROKER_ENDPOINT
#error "Please define democonfigMQTT_BROKER_ENDPOINT in demo_config.h."
#endif
#ifndef democonfigCLIENT_IDENTIFIER
/**
* @brief The MQTT client identifier used in this example. Each client identifier
* must be unique so edit as required to ensure no two clients connecting to the
* same broker use the same client identifier. Using a #define is for convenience
* of demonstration only - production devices should use something unique to the
* device that can be read from software - such as a production serial number.
*/
#error "Please define democonfigCLIENT_IDENTIFIER in demo_config.h to something unique for this device."
#endif
#if defined( democonfigUSE_TLS ) && ( democonfigUSE_TLS == 1 )
#ifndef democonfigROOT_CA_PEM
#error "Please define Root CA certificate of the MQTT broker(democonfigROOT_CA_PEM) in demo_config.h."
#endif
/* If no username is defined, then a client certificate/key is required. */
#ifndef democonfigCLIENT_USERNAME
/*
*!!! Please note democonfigCLIENT_PRIVATE_KEY_PEM in used for
*!!! convenience of demonstration only. Production devices should
*!!! store keys securely, such as within a secure element.
*/
#ifndef democonfigCLIENT_CERTIFICATE_PEM
#error "Please define client certificate(democonfigCLIENT_CERTIFICATE_PEM) in demo_config.h."
#endif
#ifndef democonfigCLIENT_PRIVATE_KEY_PEM
#error "Please define client private key(democonfigCLIENT_PRIVATE_KEY_PEM) in demo_config.h."
#endif
#else
/* If a username is defined, a client password also would need to be defined for
* client authentication. */
#ifndef democonfigCLIENT_PASSWORD
#error "Please define client password(democonfigCLIENT_PASSWORD) in demo_config.h for client authentication based on username/password."
#endif
/* AWS IoT MQTT broker port needs to be 443 for client authentication based on
* username/password. */
#if defined( democonfigUSE_AWS_IOT_CORE_BROKER ) && democonfigMQTT_BROKER_PORT != 443
#error "Broker port(democonfigMQTT_BROKER_PORT) should be defined as 443 in demo_config.h for client authentication based on username/password in AWS IoT Core."
#endif
#endif /* ifndef democonfigCLIENT_USERNAME */
#ifndef democonfigMQTT_BROKER_PORT
#define democonfigMQTT_BROKER_PORT ( 8883 )
#endif
#else /* if defined( democonfigUSE_TLS ) && ( democonfigUSE_TLS == 1 ) */
#ifndef democonfigMQTT_BROKER_PORT
#define democonfigMQTT_BROKER_PORT ( 1883 )
#endif
#endif /* if defined( democonfigUSE_TLS ) && ( democonfigUSE_TLS == 1 ) */
/**
* @brief ALPN (Application-Layer Protocol Negotiation) protocol name for AWS IoT MQTT.
*
* This will be used if democonfigMQTT_BROKER_PORT is configured as 443 for the AWS IoT MQTT broker.
* Please see more details about the ALPN protocol for AWS IoT MQTT endpoint
* in the link below.
* https://aws.amazon.com/blogs/iot/mqtt-with-tls-client-authentication-on-port-443-why-it-is-useful-and-how-it-works/
*/
#define AWS_IOT_MQTT_ALPN "\x0ex-amzn-mqtt-ca"
/**
* @brief This is the ALPN (Application-Layer Protocol Negotiation) string
* required by AWS IoT for password-based authentication using TCP port 443.
*/
#define AWS_IOT_CUSTOM_AUTH_ALPN "\x04mqtt"
/**
* Provide default values for undefined configuration settings.
*/
#ifndef democonfigOS_NAME
#define democonfigOS_NAME "FreeRTOS"
#endif
#ifndef democonfigOS_VERSION
#define democonfigOS_VERSION tskKERNEL_VERSION_NUMBER
#endif
#ifndef democonfigHARDWARE_PLATFORM_NAME
#define democonfigHARDWARE_PLATFORM_NAME "WinSim"
#endif
#ifndef democonfigMQTT_LIB
#define democonfigMQTT_LIB "core-mqtt@1.0.0"
#endif
/**
* @brief The MQTT metrics string expected by AWS IoT.
*/
#define AWS_IOT_METRICS_STRING \
"?SDK=" democonfigOS_NAME "&Version=" democonfigOS_VERSION \
"&Platform=" democonfigHARDWARE_PLATFORM_NAME "&MQTTLib=" democonfigMQTT_LIB
/**
* @brief The length of the MQTT metrics string expected by AWS IoT.
*/
#define AWS_IOT_METRICS_STRING_LENGTH ( ( uint16_t ) ( sizeof( AWS_IOT_METRICS_STRING ) - 1 ) )
#ifdef democonfigCLIENT_USERNAME
/**
* @brief Append the username with the metrics string if #democonfigCLIENT_USERNAME is defined.
*
* This is to support both metrics reporting and username/password based client
* authentication by AWS IoT.
*/
#define CLIENT_USERNAME_WITH_METRICS democonfigCLIENT_USERNAME AWS_IOT_METRICS_STRING
#endif
/**
* @brief Length of client identifier.
*/
#define democonfigCLIENT_IDENTIFIER_LENGTH ( ( uint16_t ) ( sizeof( democonfigCLIENT_IDENTIFIER ) - 1 ) )
/**
* @brief Length of MQTT server host name.
*/
#define democonfigBROKER_ENDPOINT_LENGTH ( ( uint16_t ) ( sizeof( democonfigMQTT_BROKER_ENDPOINT ) - 1 ) )
#endif /* DEMO_CONFIG_H */ #endif /* DEMO_CONFIG_H */

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