Microsoft Azure IoTHub client libraries
Dependents: sht15_remote_monitoring RobotArmDemo iothub_client_sample_amqp f767zi_mqtt ... more
This library implements the Microsoft Azure IoTHub client library. The code is replicated from https://github.com/Azure/azure-iot-sdks
iothub_client.c
- Committer:
- Azure.IoT Build
- Date:
- 2016-03-25
- Revision:
- 37:18310e4d888d
- Parent:
- 35:ceed20da4ba6
- Child:
- 38:a05929a75111
File content as of revision 37:18310e4d888d:
// Copyright (c) Microsoft. All rights reserved. // Licensed under the MIT license. See LICENSE file in the project root for full license information. #include <stdlib.h> #ifdef _CRTDBG_MAP_ALLOC #include <crtdbg.h> #endif #include "gballoc.h" #include <stdlib.h> #include <signal.h> #include <stddef.h> #include "crt_abstractions.h" #include "iothub_client.h" #include "iothub_client_ll.h" #include "iothubtransport.h" #include "threadapi.h" #include "lock.h" #include "iot_logging.h" typedef struct IOTHUB_CLIENT_INSTANCE_TAG { IOTHUB_CLIENT_LL_HANDLE IoTHubClientLLHandle; TRANSPORT_HANDLE TransportHandle; THREAD_HANDLE ThreadHandle; LOCK_HANDLE LockHandle; sig_atomic_t StopThread; } IOTHUB_CLIENT_INSTANCE; /*used by unittests only*/ const size_t IoTHubClient_ThreadTerminationOffset = offsetof(IOTHUB_CLIENT_INSTANCE, StopThread); static int ScheduleWork_Thread(void* threadArgument) { IOTHUB_CLIENT_INSTANCE* iotHubClientInstance = (IOTHUB_CLIENT_INSTANCE*)threadArgument; while (1) { if (Lock(iotHubClientInstance->LockHandle) == LOCK_OK) { /*Codes_SRS_IOTHUBCLIENT_01_038: [ The thread shall exit when IoTHubClient_Destroy is called. ]*/ if (iotHubClientInstance->StopThread) { (void)Unlock(iotHubClientInstance->LockHandle); break; /*gets out of the thread*/ } else { /* Codes_SRS_IOTHUBCLIENT_01_037: [The thread created by IoTHubClient_SendEvent or IoTHubClient_SetMessageCallback shall call IoTHubClient_LL_DoWork every 1 ms.] */ /* Codes_SRS_IOTHUBCLIENT_01_039: [All calls to IoTHubClient_LL_DoWork shall be protected by the lock created in IotHubClient_Create.] */ IoTHubClient_LL_DoWork(iotHubClientInstance->IoTHubClientLLHandle); (void)Unlock(iotHubClientInstance->LockHandle); } } else { /*Codes_SRS_IOTHUBCLIENT_01_040: [If acquiring the lock fails, IoTHubClient_LL_DoWork shall not be called.]*/ /*no code, shall retry*/ } (void)ThreadAPI_Sleep(1); } return 0; } static IOTHUB_CLIENT_RESULT StartWorkerThreadIfNeeded(IOTHUB_CLIENT_INSTANCE* iotHubClientInstance) { IOTHUB_CLIENT_RESULT result; if (iotHubClientInstance->TransportHandle == NULL) { if (iotHubClientInstance->ThreadHandle == NULL) { iotHubClientInstance->StopThread = 0; if (ThreadAPI_Create(&iotHubClientInstance->ThreadHandle, ScheduleWork_Thread, iotHubClientInstance) != THREADAPI_OK) { iotHubClientInstance->ThreadHandle = NULL; result = IOTHUB_CLIENT_ERROR; } else { result = IOTHUB_CLIENT_OK; } } else { result = IOTHUB_CLIENT_OK; } } else { /*Codes_SRS_IOTHUBCLIENT_17_012: [ If the transport connection is shared, the thread shall be started by calling IoTHubTransport_StartWorkerThread. ]*/ /*Codes_SRS_IOTHUBCLIENT_17_011: [ If the transport connection is shared, the thread shall be started by calling IoTHubTransport_StartWorkerThread*/ result = IoTHubTransport_StartWorkerThread(iotHubClientInstance->TransportHandle, iotHubClientInstance); } return result; } IOTHUB_CLIENT_HANDLE IoTHubClient_CreateFromConnectionString(const char* connectionString, IOTHUB_CLIENT_TRANSPORT_PROVIDER protocol) { IOTHUB_CLIENT_INSTANCE* result = NULL; /* Codes_SRS_IOTHUBCLIENT_12_003: [IoTHubClient_CreateFromConnectionString shall verify the input parameter and if it is NULL then return NULL] */ if (connectionString == NULL) { LogError("Input parameter is NULL: connectionString\r\n"); } else if (protocol == NULL) { LogError("Input parameter is NULL: protocol\r\n"); } else { /* Codes_SRS_IOTHUBCLIENT_12_004: [IoTHubClient_CreateFromConnectionString shall allocate a new IoTHubClient instance.] */ result = malloc(sizeof(IOTHUB_CLIENT_INSTANCE)); /* Codes_SRS_IOTHUBCLIENT_12_011: [If the allocation failed, IoTHubClient_CreateFromConnectionString returns NULL] */ if (result == NULL) { LogError("Malloc failed\r\n"); } else { /* Codes_SRS_IOTHUBCLIENT_12_005: [IoTHubClient_CreateFromConnectionString shall create a lock object to be used later for serializing IoTHubClient calls] */ result->LockHandle = Lock_Init(); if (result->LockHandle == NULL) { /* Codes_SRS_IOTHUBCLIENT_12_009: [If lock creation failed, IoTHubClient_CreateFromConnectionString shall do clean up and return NULL] */ free(result); result = NULL; LogError("Lock_Init failed\r\n"); } else { /* Codes_SRS_IOTHUBCLIENT_12_006: [IoTHubClient_CreateFromConnectionString shall instantiate a new IoTHubClient_LL instance by calling IoTHubClient_LL_CreateFromConnectionString and passing the connectionString] */ result->IoTHubClientLLHandle = IoTHubClient_LL_CreateFromConnectionString(connectionString, protocol); if (result->IoTHubClientLLHandle == NULL) { /* Codes_SRS_IOTHUBCLIENT_12_010: [If IoTHubClient_LL_CreateFromConnectionString fails then IoTHubClient_CreateFromConnectionString shall do clean - up and return NULL] */ Lock_Deinit(result->LockHandle); free(result); result = NULL; LogError("IoTHubClient_LL_CreateFromConnectionString failed\r\n"); } else { result->ThreadHandle = NULL; result->TransportHandle = NULL; } } } } return result; } IOTHUB_CLIENT_HANDLE IoTHubClient_Create(const IOTHUB_CLIENT_CONFIG* config) { /* Codes_SRS_IOTHUBCLIENT_01_001: [IoTHubClient_Create shall allocate a new IoTHubClient instance and return a non-NULL handle to it.] */ IOTHUB_CLIENT_INSTANCE* result = (IOTHUB_CLIENT_INSTANCE*)malloc(sizeof(IOTHUB_CLIENT_INSTANCE)); /* Codes_SRS_IOTHUBCLIENT_01_004: [If allocating memory for the new IoTHubClient instance fails, then IoTHubClient_Create shall return NULL.] */ if (result != NULL) { /* Codes_SRS_IOTHUBCLIENT_01_029: [IoTHubClient_Create shall create a lock object to be used later for serializing IoTHubClient calls.] */ result->LockHandle = Lock_Init(); if (result->LockHandle == NULL) { /* Codes_SRS_IOTHUBCLIENT_01_030: [If creating the lock fails, then IoTHubClient_Create shall return NULL.] */ /* Codes_SRS_IOTHUBCLIENT_01_031: [If IoTHubClient_Create fails, all resources allocated by it shall be freed.] */ free(result); result = NULL; } else { /* Codes_SRS_IOTHUBCLIENT_01_002: [IoTHubClient_Create shall instantiate a new IoTHubClient_LL instance by calling IoTHubClient_LL_Create and passing the config argument.] */ result->IoTHubClientLLHandle = IoTHubClient_LL_Create(config); if (result->IoTHubClientLLHandle == NULL) { /* Codes_SRS_IOTHUBCLIENT_01_003: [If IoTHubClient_LL_Create fails, then IoTHubClient_Create shall return NULL.] */ /* Codes_SRS_IOTHUBCLIENT_01_031: [If IoTHubClient_Create fails, all resources allocated by it shall be freed.] */ Lock_Deinit(result->LockHandle); free(result); result = NULL; } else { result->TransportHandle = NULL; result->ThreadHandle = NULL; } } } return result; } IOTHUB_CLIENT_HANDLE IoTHubClient_CreateWithTransport(TRANSPORT_HANDLE transportHandle, const IOTHUB_CLIENT_CONFIG* config) { IOTHUB_CLIENT_INSTANCE* result; /*Codes_SRS_IOTHUBCLIENT_17_013: [ IoTHubClient_CreateWithTransport shall return NULL if transportHandle is NULL. ]*/ /*Codes_SRS_IOTHUBCLIENT_17_014: [ IoTHubClient_CreateWithTransport shall return NULL if config is NULL. ]*/ if (transportHandle == NULL || config == NULL) { result = NULL; } else { /*Codes_SRS_IOTHUBCLIENT_17_001: [ IoTHubClient_CreateWithTransport shall allocate a new IoTHubClient instance and return a non-NULL handle to it. ]*/ result = (IOTHUB_CLIENT_INSTANCE*)malloc(sizeof(IOTHUB_CLIENT_INSTANCE)); /*Codes_SRS_IOTHUBCLIENT_17_002: [ If allocating memory for the new IoTHubClient instance fails, then IoTHubClient_CreateWithTransport shall return NULL. ]*/ if (result != NULL) { result->ThreadHandle = NULL; result->TransportHandle = transportHandle; /*Codes_SRS_IOTHUBCLIENT_17_005: [ IoTHubClient_CreateWithTransport shall call IoTHubTransport_GetLock to get the transport lock to be used later for serializing IoTHubClient calls. ]*/ LOCK_HANDLE transportLock = IoTHubTransport_GetLock(transportHandle); result->LockHandle = transportLock; if (result->LockHandle == NULL) { /*Codes_SRS_IOTHUBCLIENT_17_006: [ If IoTHubTransport_GetLock fails, then IoTHubClient_CreateWithTransport shall return NULL. ]*/ free(result); result = NULL; } else { IOTHUB_CLIENT_DEVICE_CONFIG deviceConfig; deviceConfig.deviceId = config->deviceId; deviceConfig.deviceKey = config->deviceKey; deviceConfig.protocol = config->protocol; /*Codes_SRS_IOTHUBCLIENT_17_003: [ IoTHubClient_CreateWithTransport shall call IoTHubTransport_GetLLTransport on transportHandle to get lower layer transport. ]*/ deviceConfig.transportHandle = IoTHubTransport_GetLLTransport(transportHandle); if (deviceConfig.transportHandle == NULL) { /*Codes_SRS_IOTHUBCLIENT_17_004: [ If IoTHubTransport_GetLLTransport fails, then IoTHubClient_CreateWithTransport shall return NULL. ]*/ free(result); result = NULL; } else { if (Lock(transportLock) != LOCK_OK) { free(result); result = NULL; } else { /*Codes_SRS_IOTHUBCLIENT_17_007: [ IoTHubClient_CreateWithTransport shall instantiate a new IoTHubClient_LL instance by calling IoTHubClient_LL_CreateWithTransport and passing the lower layer transport and config argument. ]*/ result->IoTHubClientLLHandle = IoTHubClient_LL_CreateWithTransport(&deviceConfig); if (result->IoTHubClientLLHandle == NULL) { /*Codes_SRS_IOTHUBCLIENT_17_008: [ If IoTHubClient_LL_CreateWithTransport fails, then IoTHubClient_Create shall return NULL. ]*/ /*Codes_SRS_IOTHUBCLIENT_17_009: [ If IoTHubClient_LL_CreateWithTransport fails, all resources allocated by it shall be freed. ]*/ free(result); result = NULL; } if (Unlock(transportLock) != LOCK_OK) { LogError("unable to Unlock"); } } } } } } return result; } /* Codes_SRS_IOTHUBCLIENT_01_005: [IoTHubClient_Destroy shall free all resources associated with the iotHubClientHandle instance.] */ void IoTHubClient_Destroy(IOTHUB_CLIENT_HANDLE iotHubClientHandle) { /* Codes_SRS_IOTHUBCLIENT_01_008: [IoTHubClient_Destroy shall do nothing if parameter iotHubClientHandle is NULL.] */ if (iotHubClientHandle != NULL) { bool okToJoin; IOTHUB_CLIENT_INSTANCE* iotHubClientInstance = (IOTHUB_CLIENT_INSTANCE*)iotHubClientHandle; /*Codes_SRS_IOTHUBCLIENT_02_043: [ IoTHubClient_Destroy shall lock the serializing lock and signal the worker thread (if any) to end ]*/ if (Lock(iotHubClientInstance->LockHandle) != LOCK_OK) { LogError("unable to Lock - - will still proceed to try to end the thread without locking"); } if (iotHubClientInstance->ThreadHandle != NULL) { iotHubClientInstance->StopThread = 1; okToJoin = true; } else { okToJoin = false; } if (iotHubClientInstance->TransportHandle != NULL) { /*Codes_SRS_IOTHUBCLIENT_01_007: [ The thread created as part of executing IoTHubClient_SendEventAsync or IoTHubClient_SetNotificationMessageCallback shall be joined. ]*/ okToJoin = IoTHubTransport_SignalEndWorkerThread(iotHubClientInstance->TransportHandle, iotHubClientHandle); } /* Codes_SRS_IOTHUBCLIENT_01_006: [That includes destroying the IoTHubClient_LL instance by calling IoTHubClient_LL_Destroy.] */ IoTHubClient_LL_Destroy(iotHubClientInstance->IoTHubClientLLHandle); /*Codes_SRS_IOTHUBCLIENT_02_045: [ IoTHubClient_Destroy shall unlock the serializing lock. ]*/ if (Unlock(iotHubClientInstance->LockHandle) != LOCK_OK) { LogError("unable to Unlock"); } if (okToJoin == true) { if (iotHubClientInstance->ThreadHandle != NULL) { int res; /*Codes_SRS_IOTHUBCLIENT_01_007: [ The thread created as part of executing IoTHubClient_SendEventAsync or IoTHubClient_SetNotificationMessageCallback shall be joined. ]*/ if (ThreadAPI_Join(iotHubClientInstance->ThreadHandle, &res) != THREADAPI_OK) { LogError("ThreadAPI_Join failed\r\n"); } } if (iotHubClientInstance->TransportHandle != NULL) { /*Codes_SRS_IOTHUBCLIENT_01_007: [ The thread created as part of executing IoTHubClient_SendEventAsync or IoTHubClient_SetNotificationMessageCallback shall be joined. ]*/ IoTHubTransport_JoinWorkerThread(iotHubClientInstance->TransportHandle, iotHubClientHandle); } } if (iotHubClientInstance->TransportHandle == NULL) { /* Codes_SRS_IOTHUBCLIENT_01_032: [If the lock was allocated in IoTHubClient_Create, it shall be also freed..] */ Lock_Deinit(iotHubClientInstance->LockHandle); } free(iotHubClientInstance); } } IOTHUB_CLIENT_RESULT IoTHubClient_SendEventAsync(IOTHUB_CLIENT_HANDLE iotHubClientHandle, IOTHUB_MESSAGE_HANDLE eventMessageHandle, IOTHUB_CLIENT_EVENT_CONFIRMATION_CALLBACK eventConfirmationCallback, void* userContextCallback) { IOTHUB_CLIENT_RESULT result; if (iotHubClientHandle == NULL) { /* Codes_SRS_IOTHUBCLIENT_01_011: [If iotHubClientHandle is NULL, IoTHubClient_SendEventAsync shall return IOTHUB_CLIENT_INVALID_ARG.] */ result = IOTHUB_CLIENT_INVALID_ARG; LogError("NULL iothubClientHandle\r\n"); } else { IOTHUB_CLIENT_INSTANCE* iotHubClientInstance = (IOTHUB_CLIENT_INSTANCE*)iotHubClientHandle; /* Codes_SRS_IOTHUBCLIENT_01_025: [IoTHubClient_SendEventAsync shall be made thread-safe by using the lock created in IoTHubClient_Create.] */ if (Lock(iotHubClientInstance->LockHandle) != LOCK_OK) { /* Codes_SRS_IOTHUBCLIENT_01_026: [If acquiring the lock fails, IoTHubClient_SendEventAsync shall return IOTHUB_CLIENT_ERROR.] */ result = IOTHUB_CLIENT_ERROR; LogError("Could not acquire lock\r\n"); } else { /* Codes_SRS_IOTHUBCLIENT_01_009: [IoTHubClient_SendEventAsync shall start the worker thread if it was not previously started.] */ if ((result = StartWorkerThreadIfNeeded(iotHubClientInstance)) != IOTHUB_CLIENT_OK) { /* Codes_SRS_IOTHUBCLIENT_01_010: [If starting the thread fails, IoTHubClient_SendEventAsync shall return IOTHUB_CLIENT_ERROR.] */ result = IOTHUB_CLIENT_ERROR; LogError("Could not start worker thread\r\n"); } else { /* Codes_SRS_IOTHUBCLIENT_01_012: [IoTHubClient_SendEventAsync shall call IoTHubClient_LL_SendEventAsync, while passing the IoTHubClient_LL handle created by IoTHubClient_Create and the parameters eventMessageHandle, eventConfirmationCallback and userContextCallback.] */ /* Codes_SRS_IOTHUBCLIENT_01_013: [When IoTHubClient_LL_SendEventAsync is called, IoTHubClient_SendEventAsync shall return the result of IoTHubClient_LL_SendEventAsync.] */ result = IoTHubClient_LL_SendEventAsync(iotHubClientInstance->IoTHubClientLLHandle, eventMessageHandle, eventConfirmationCallback, userContextCallback); } /* Codes_SRS_IOTHUBCLIENT_01_025: [IoTHubClient_SendEventAsync shall be made thread-safe by using the lock created in IoTHubClient_Create.] */ (void)Unlock(iotHubClientInstance->LockHandle); } } return result; } IOTHUB_CLIENT_RESULT IoTHubClient_GetSendStatus(IOTHUB_CLIENT_HANDLE iotHubClientHandle, IOTHUB_CLIENT_STATUS *iotHubClientStatus) { IOTHUB_CLIENT_RESULT result; if (iotHubClientHandle == NULL) { /* Codes_SRS_IOTHUBCLIENT_01_023: [If iotHubClientHandle is NULL, IoTHubClient_ GetSendStatus shall return IOTHUB_CLIENT_INVALID_ARG.] */ result = IOTHUB_CLIENT_INVALID_ARG; LogError("NULL iothubClientHandle\r\n"); } else { IOTHUB_CLIENT_INSTANCE* iotHubClientInstance = (IOTHUB_CLIENT_INSTANCE*)iotHubClientHandle; /* Codes_SRS_IOTHUBCLIENT_01_033: [IoTHubClient_GetSendStatus shall be made thread-safe by using the lock created in IoTHubClient_Create.] */ if (Lock(iotHubClientInstance->LockHandle) != LOCK_OK) { /* Codes_SRS_IOTHUBCLIENT_01_034: [If acquiring the lock fails, IoTHubClient_GetSendStatus shall return IOTHUB_CLIENT_ERROR.] */ result = IOTHUB_CLIENT_ERROR; LogError("Could not acquire lock\r\n"); } else { /* Codes_SRS_IOTHUBCLIENT_01_022: [IoTHubClient_GetSendStatus shall call IoTHubClient_LL_GetSendStatus, while passing the IoTHubClient_LL handle created by IoTHubClient_Create and the parameter iotHubClientStatus.] */ /* Codes_SRS_IOTHUBCLIENT_01_024: [Otherwise, IoTHubClient_GetSendStatus shall return the result of IoTHubClient_LL_GetSendStatus.] */ result = IoTHubClient_LL_GetSendStatus(iotHubClientInstance->IoTHubClientLLHandle, iotHubClientStatus); /* Codes_SRS_IOTHUBCLIENT_01_033: [IoTHubClient_GetSendStatus shall be made thread-safe by using the lock created in IoTHubClient_Create.] */ (void)Unlock(iotHubClientInstance->LockHandle); } } return result; } IOTHUB_CLIENT_RESULT IoTHubClient_SetMessageCallback(IOTHUB_CLIENT_HANDLE iotHubClientHandle, IOTHUB_CLIENT_MESSAGE_CALLBACK_ASYNC messageCallback, void* userContextCallback) { IOTHUB_CLIENT_RESULT result; if (iotHubClientHandle == NULL) { /* Codes_SRS_IOTHUBCLIENT_01_016: [If iotHubClientHandle is NULL, IoTHubClient_SetMessageCallback shall return IOTHUB_CLIENT_INVALID_ARG.] */ result = IOTHUB_CLIENT_INVALID_ARG; LogError("NULL iothubClientHandle\r\n"); } else { IOTHUB_CLIENT_INSTANCE* iotHubClientInstance = (IOTHUB_CLIENT_INSTANCE*)iotHubClientHandle; /* Codes_SRS_IOTHUBCLIENT_01_027: [IoTHubClient_SetMessageCallback shall be made thread-safe by using the lock created in IoTHubClient_Create.] */ if (Lock(iotHubClientInstance->LockHandle) != LOCK_OK) { /* Codes_SRS_IOTHUBCLIENT_01_028: [If acquiring the lock fails, IoTHubClient_SetMessageCallback shall return IOTHUB_CLIENT_ERROR.] */ result = IOTHUB_CLIENT_ERROR; LogError("Could not acquire lock\r\n"); } else { /* Codes_SRS_IOTHUBCLIENT_01_014: [IoTHubClient_SetMessageCallback shall start the worker thread if it was not previously started.] */ if ((result = StartWorkerThreadIfNeeded(iotHubClientInstance)) != IOTHUB_CLIENT_OK) { /* Codes_SRS_IOTHUBCLIENT_01_015: [If starting the thread fails, IoTHubClient_SetMessageCallback shall return IOTHUB_CLIENT_ERROR.] */ result = IOTHUB_CLIENT_ERROR; LogError("Could not start worker thread\r\n"); } else { /* Codes_SRS_IOTHUBCLIENT_01_017: [IoTHubClient_SetMessageCallback shall call IoTHubClient_LL_SetMessageCallback, while passing the IoTHubClient_LL handle created by IoTHubClient_Create and the parameters messageCallback and userContextCallback.] */ result = IoTHubClient_LL_SetMessageCallback(iotHubClientInstance->IoTHubClientLLHandle, messageCallback, userContextCallback); } /* Codes_SRS_IOTHUBCLIENT_01_027: [IoTHubClient_SetMessageCallback shall be made thread-safe by using the lock created in IoTHubClient_Create.] */ Unlock(iotHubClientInstance->LockHandle); } } return result; } IOTHUB_CLIENT_RESULT IoTHubClient_GetLastMessageReceiveTime(IOTHUB_CLIENT_HANDLE iotHubClientHandle, time_t* lastMessageReceiveTime) { IOTHUB_CLIENT_RESULT result; if (iotHubClientHandle == NULL) { /* Codes_SRS_IOTHUBCLIENT_01_020: [If iotHubClientHandle is NULL, IoTHubClient_GetLastMessageReceiveTime shall return IOTHUB_CLIENT_INVALID_ARG.] */ result = IOTHUB_CLIENT_INVALID_ARG; LogError("NULL iothubClientHandle\r\n"); } else { IOTHUB_CLIENT_INSTANCE* iotHubClientInstance = (IOTHUB_CLIENT_INSTANCE*)iotHubClientHandle; /* Codes_SRS_IOTHUBCLIENT_01_035: [IoTHubClient_GetLastMessageReceiveTime shall be made thread-safe by using the lock created in IoTHubClient_Create.] */ if (Lock(iotHubClientInstance->LockHandle) != LOCK_OK) { /* Codes_SRS_IOTHUBCLIENT_01_036: [If acquiring the lock fails, IoTHubClient_GetLastMessageReceiveTime shall return IOTHUB_CLIENT_ERROR.] */ result = IOTHUB_CLIENT_ERROR; LogError("Could not acquire lock\r\n"); } else { /* Codes_SRS_IOTHUBCLIENT_01_019: [IoTHubClient_GetLastMessageReceiveTime shall call IoTHubClient_LL_GetLastMessageReceiveTime, while passing the IoTHubClient_LL handle created by IoTHubClient_Create and the parameter lastMessageReceiveTime.] */ /* Codes_SRS_IOTHUBCLIENT_01_021: [Otherwise, IoTHubClient_GetLastMessageReceiveTime shall return the result of IoTHubClient_LL_GetLastMessageReceiveTime.] */ result = IoTHubClient_LL_GetLastMessageReceiveTime(iotHubClientInstance->IoTHubClientLLHandle, lastMessageReceiveTime); /* Codes_SRS_IOTHUBCLIENT_01_035: [IoTHubClient_GetLastMessageReceiveTime shall be made thread-safe by using the lock created in IoTHubClient_Create.] */ Unlock(iotHubClientInstance->LockHandle); } } return result; } IOTHUB_CLIENT_RESULT IoTHubClient_SetOption(IOTHUB_CLIENT_HANDLE iotHubClientHandle, const char* optionName, const void* value) { IOTHUB_CLIENT_RESULT result; /*Codes_SRS_IOTHUBCLIENT_02_034: [If parameter iotHubClientHandle is NULL then IoTHubClient_SetOption shall return IOTHUB_CLIENT_INVALID_ARG.] */ if ( (iotHubClientHandle == NULL) || (optionName == NULL) || (value == NULL) ) { result = IOTHUB_CLIENT_INVALID_ARG; LogError("invalid arg (NULL)r\n"); } else { IOTHUB_CLIENT_INSTANCE* iotHubClientInstance = (IOTHUB_CLIENT_INSTANCE*)iotHubClientHandle; /*Codes_SRS_IOTHUBCLIENT_02_038: [If optionName doesn't match one of the options handled by this module then IoTHubClient_SetOption shall call IoTHubClient_LL_SetOption passing the same parameters and return what IoTHubClient_LL_SetOption returns.] */ result = IoTHubClient_LL_SetOption(iotHubClientInstance->IoTHubClientLLHandle, optionName, value); if (result != IOTHUB_CLIENT_OK) { LogError("IoTHubClient_LL_SetOption failed\r\n"); } } return result; }