iothub_client.c

00001 // Copyright (c) Microsoft. All rights reserved.
00002 // Licensed under the MIT license. See LICENSE file in the project root for full license information.
00003 
00004 #include <stdlib.h> 
00005 #ifdef _CRTDBG_MAP_ALLOC
00006 #include <crtdbg.h>
00007 #endif
00008 #include "azure_c_shared_utility/gballoc.h"
00009 
00010 #include <stdlib.h>
00011 #include <signal.h>
00012 #include <stddef.h>
00013 #include "azure_c_shared_utility/crt_abstractions.h"
00014 #include "iothub_client.h"
00015 #include "iothub_client_ll.h"
00016 #include "iothubtransport.h"
00017 #include "azure_c_shared_utility/threadapi.h"
00018 #include "azure_c_shared_utility/lock.h"
00019 #include "azure_c_shared_utility/iot_logging.h"
00020 #include "azure_c_shared_utility/list.h"
00021 
00022 typedef struct IOTHUB_CLIENT_INSTANCE_TAG
00023 {
00024     IOTHUB_CLIENT_LL_HANDLE IoTHubClientLLHandle;
00025     TRANSPORT_HANDLE TransportHandle;
00026     THREAD_HANDLE ThreadHandle;
00027     LOCK_HANDLE LockHandle;
00028     sig_atomic_t StopThread;
00029 #ifdef USE_UPLOADTOBLOB
00030     LIST_HANDLE savedDataToBeCleaned; /*list containing UPLOADTOBLOB_SAVED_DATA*/
00031 #endif
00032 } IOTHUB_CLIENT_INSTANCE;
00033 
00034 #ifdef USE_UPLOADTOBLOB
00035 typedef struct UPLOADTOBLOB_SAVED_DATA_TAG
00036 {
00037     unsigned char* source;
00038     size_t size;
00039     char* destinationFileName;
00040     IOTHUB_CLIENT_FILE_UPLOAD_CALLBACK iotHubClientFileUploadCallback;
00041     void* context;
00042     THREAD_HANDLE uploadingThreadHandle;
00043     IOTHUB_CLIENT_HANDLE iotHubClientHandle;
00044     LOCK_HANDLE lockGarbage;
00045     int canBeGarbageCollected; /*flag indicating that the UPLOADTOBLOB_SAVED_DATA structure can be freed because the thread deadling with it finished*/
00046 }UPLOADTOBLOB_SAVED_DATA;
00047 #endif
00048 
00049 /*used by unittests only*/
00050 const size_t IoTHubClient_ThreadTerminationOffset = offsetof(IOTHUB_CLIENT_INSTANCE, StopThread);
00051 
00052 #ifdef USE_UPLOADTOBLOB
00053 /*this function is called from _Destroy and from ScheduleWork_Thread to join finished blobUpload threads and free that memory*/
00054 static void garbageCollectorImpl(IOTHUB_CLIENT_INSTANCE* iotHubClientInstance)
00055 {
00056     /*see if any savedData structures can be disposed of*/
00057     /*Codes_SRS_IOTHUBCLIENT_02_072: [ All threads marked as disposable (upon completion of a file upload) shall be joined and the data structures build for them shall be freed. ]*/
00058     LIST_ITEM_HANDLE item = list_get_head_item(iotHubClientInstance->savedDataToBeCleaned);
00059     while (item != NULL)
00060     {
00061         const UPLOADTOBLOB_SAVED_DATA* savedData = (const UPLOADTOBLOB_SAVED_DATA*)list_item_get_value(item);
00062         LIST_ITEM_HANDLE old_item = item;
00063         item = list_get_next_item(item);
00064 
00065         if (Lock(savedData->lockGarbage) != LOCK_OK)
00066         {
00067             LogError("unable to Lock");
00068         }
00069         else
00070         {
00071             if (savedData->canBeGarbageCollected == 1)
00072             {
00073                 int notUsed;
00074                 if (ThreadAPI_Join(savedData->uploadingThreadHandle, &notUsed) != THREADAPI_OK)
00075                 {
00076                     LogError("unable to ThreadAPI_Join");
00077                 }
00078                 (void)list_remove(iotHubClientInstance->savedDataToBeCleaned, old_item);
00079                 free((void*)savedData->source);
00080                 free((void*)savedData->destinationFileName);
00081 
00082                 if (Unlock(savedData->lockGarbage) != LOCK_OK)
00083                 {
00084                     LogError("unable to unlock after locking");
00085                 }
00086                 (void)Lock_Deinit(savedData->lockGarbage);
00087                 free((void*)savedData);
00088             }
00089             else
00090             {
00091                 if (Unlock(savedData->lockGarbage) != LOCK_OK)
00092                 {
00093                     LogError("unable to unlock after locking");
00094                 }
00095             }
00096         }
00097     }
00098 }
00099 #endif
00100 
00101 static int ScheduleWork_Thread(void* threadArgument)
00102 {
00103     IOTHUB_CLIENT_INSTANCE* iotHubClientInstance = (IOTHUB_CLIENT_INSTANCE*)threadArgument;
00104 
00105     while (1)
00106     {
00107         if (Lock(iotHubClientInstance->LockHandle) == LOCK_OK)
00108         {
00109             /*Codes_SRS_IOTHUBCLIENT_01_038: [ The thread shall exit when IoTHubClient_Destroy is called. ]*/
00110             if (iotHubClientInstance->StopThread)
00111             {
00112                 (void)Unlock(iotHubClientInstance->LockHandle);
00113                 break; /*gets out of the thread*/
00114             }
00115             else
00116             {
00117                 /* Codes_SRS_IOTHUBCLIENT_01_037: [The thread created by IoTHubClient_SendEvent or IoTHubClient_SetMessageCallback shall call IoTHubClient_LL_DoWork every 1 ms.] */
00118                 /* Codes_SRS_IOTHUBCLIENT_01_039: [All calls to IoTHubClient_LL_DoWork shall be protected by the lock created in IotHubClient_Create.] */
00119                 IoTHubClient_LL_DoWork(iotHubClientInstance->IoTHubClientLLHandle);
00120 
00121 #ifdef USE_UPLOADTOBLOB
00122                 garbageCollectorImpl(iotHubClientInstance);
00123 #endif
00124                 (void)Unlock(iotHubClientInstance->LockHandle);
00125             }
00126         }
00127         else
00128         {
00129             /*Codes_SRS_IOTHUBCLIENT_01_040: [If acquiring the lock fails, IoTHubClient_LL_DoWork shall not be called.]*/
00130             /*no code, shall retry*/
00131         }
00132         (void)ThreadAPI_Sleep(1);
00133     }
00134 
00135     return 0;
00136 }
00137 
00138 static IOTHUB_CLIENT_RESULT StartWorkerThreadIfNeeded(IOTHUB_CLIENT_INSTANCE* iotHubClientInstance)
00139 {
00140     IOTHUB_CLIENT_RESULT result;
00141     if (iotHubClientInstance->TransportHandle == NULL)
00142     {
00143         if (iotHubClientInstance->ThreadHandle == NULL)
00144         {
00145             iotHubClientInstance->StopThread = 0;
00146             if (ThreadAPI_Create(&iotHubClientInstance->ThreadHandle, ScheduleWork_Thread, iotHubClientInstance) != THREADAPI_OK)
00147             {
00148                 iotHubClientInstance->ThreadHandle = NULL;
00149                 result = IOTHUB_CLIENT_ERROR;
00150             }
00151             else
00152             {
00153                 result = IOTHUB_CLIENT_OK;
00154             }
00155         }
00156         else
00157         {
00158             result = IOTHUB_CLIENT_OK;
00159         }
00160     }
00161     else
00162     {
00163         /*Codes_SRS_IOTHUBCLIENT_17_012: [ If the transport connection is shared, the thread shall be started by calling IoTHubTransport_StartWorkerThread. ]*/
00164         /*Codes_SRS_IOTHUBCLIENT_17_011: [ If the transport connection is shared, the thread shall be started by calling IoTHubTransport_StartWorkerThread*/
00165 
00166         result = IoTHubTransport_StartWorkerThread(iotHubClientInstance->TransportHandle, iotHubClientInstance);
00167     }
00168     return result;
00169 }
00170 
00171 IOTHUB_CLIENT_HANDLE IoTHubClient_CreateFromConnectionString(const char* connectionString, IOTHUB_CLIENT_TRANSPORT_PROVIDER protocol)
00172 {
00173     IOTHUB_CLIENT_INSTANCE* result = NULL;
00174 
00175     /* Codes_SRS_IOTHUBCLIENT_12_003: [IoTHubClient_CreateFromConnectionString shall verify the input parameter and if it is NULL then return NULL] */
00176     if (connectionString == NULL)
00177     {
00178         LogError("Input parameter is NULL: connectionString");
00179     }
00180     else if (protocol == NULL)
00181     {
00182         LogError("Input parameter is NULL: protocol");
00183     }
00184     else
00185     {
00186         /* Codes_SRS_IOTHUBCLIENT_12_004: [IoTHubClient_CreateFromConnectionString shall allocate a new IoTHubClient instance.] */
00187         result = malloc(sizeof(IOTHUB_CLIENT_INSTANCE));
00188 
00189         /* Codes_SRS_IOTHUBCLIENT_12_011: [If the allocation failed, IoTHubClient_CreateFromConnectionString returns NULL] */
00190         if (result == NULL)
00191         {
00192             LogError("Malloc failed");
00193         }
00194         else
00195         {
00196             /* Codes_SRS_IOTHUBCLIENT_12_005: [IoTHubClient_CreateFromConnectionString shall create a lock object to be used later for serializing IoTHubClient calls] */
00197             result->LockHandle = Lock_Init();
00198             if (result->LockHandle == NULL)
00199             {
00200                 /* Codes_SRS_IOTHUBCLIENT_12_009: [If lock creation failed, IoTHubClient_CreateFromConnectionString shall do clean up and return NULL] */
00201                 free(result);
00202                 result = NULL;
00203                 LogError("Lock_Init failed");
00204             }
00205             else
00206             {
00207 #ifdef USE_UPLOADTOBLOB
00208                 /*Codes_SRS_IOTHUBCLIENT_02_059: [ IoTHubClient_CreateFromConnectionString shall create a LIST_HANDLE containing THREAD_HANDLE (created by future calls to IoTHubClient_UploadToBlobAsync). ]*/
00209                 if ((result->savedDataToBeCleaned = list_create()) == NULL)
00210                 {
00211                     /*Codes_SRS_IOTHUBCLIENT_02_070: [ If creating the LIST_HANDLE fails then IoTHubClient_CreateFromConnectionString shall fail and return NULL]*/
00212                     LogError("unable to list_create");
00213                     Lock_Deinit(result->LockHandle);
00214                     free(result);
00215                     result = NULL;
00216                 }
00217                 else
00218 #endif
00219                 {
00220                     /* Codes_SRS_IOTHUBCLIENT_12_006: [IoTHubClient_CreateFromConnectionString shall instantiate a new IoTHubClient_LL instance by calling IoTHubClient_LL_CreateFromConnectionString and passing the connectionString] */
00221                     result->IoTHubClientLLHandle = IoTHubClient_LL_CreateFromConnectionString(connectionString, protocol);
00222                     if (result->IoTHubClientLLHandle == NULL)
00223                     {
00224                         /* Codes_SRS_IOTHUBCLIENT_12_010: [If IoTHubClient_LL_CreateFromConnectionString fails then IoTHubClient_CreateFromConnectionString shall do clean - up and return NULL] */
00225 #ifdef USE_UPLOADTOBLOB
00226                         list_destroy(result->savedDataToBeCleaned);
00227 #endif
00228                         Lock_Deinit(result->LockHandle);
00229                         free(result);
00230                         result = NULL;
00231                         LogError("IoTHubClient_LL_CreateFromConnectionString failed");
00232                     }
00233                     else
00234                     {
00235                         result->ThreadHandle = NULL;
00236                         result->TransportHandle = NULL;
00237                     }
00238                 }
00239             }
00240 
00241         }
00242     }
00243     return result;
00244 }
00245 
00246 IOTHUB_CLIENT_HANDLE IoTHubClient_Create(const IOTHUB_CLIENT_CONFIG* config)
00247 {
00248     /* Codes_SRS_IOTHUBCLIENT_01_001: [IoTHubClient_Create shall allocate a new IoTHubClient instance and return a non-NULL handle to it.] */
00249     IOTHUB_CLIENT_INSTANCE* result = (IOTHUB_CLIENT_INSTANCE*)malloc(sizeof(IOTHUB_CLIENT_INSTANCE));
00250 
00251     /* Codes_SRS_IOTHUBCLIENT_01_004: [If allocating memory for the new IoTHubClient instance fails, then IoTHubClient_Create shall return NULL.] */
00252     if (result != NULL)
00253     {
00254         /* Codes_SRS_IOTHUBCLIENT_01_029: [IoTHubClient_Create shall create a lock object to be used later for serializing IoTHubClient calls.] */
00255         result->LockHandle = Lock_Init();
00256         if (result->LockHandle == NULL)
00257         {
00258             /* Codes_SRS_IOTHUBCLIENT_01_030: [If creating the lock fails, then IoTHubClient_Create shall return NULL.] */
00259             /* Codes_SRS_IOTHUBCLIENT_01_031: [If IoTHubClient_Create fails, all resources allocated by it shall be freed.] */
00260             free(result);
00261             result = NULL;
00262         }
00263         else
00264         {
00265 #ifdef USE_UPLOADTOBLOB
00266             /*Codes_SRS_IOTHUBCLIENT_02_060: [ IoTHubClient_Create shall create a LIST_HANDLE containing THREAD_HANDLE (created by future calls to IoTHubClient_UploadToBlobAsync). ]*/
00267             if ((result->savedDataToBeCleaned = list_create()) == NULL)
00268             {
00269                 /*Codes_SRS_IOTHUBCLIENT_02_061: [ If creating the LIST_HANDLE fails then IoTHubClient_Create shall fail and return NULL. ]*/
00270                 LogError("unable to list_create");
00271                 Lock_Deinit(result->LockHandle);
00272                 free(result);
00273                 result = NULL;
00274             }
00275             else
00276 #endif
00277             {
00278                 /* Codes_SRS_IOTHUBCLIENT_01_002: [IoTHubClient_Create shall instantiate a new IoTHubClient_LL instance by calling IoTHubClient_LL_Create and passing the config argument.] */
00279                 result->IoTHubClientLLHandle = IoTHubClient_LL_Create(config);
00280                 if (result->IoTHubClientLLHandle == NULL)
00281                 {
00282                     /* Codes_SRS_IOTHUBCLIENT_01_003: [If IoTHubClient_LL_Create fails, then IoTHubClient_Create shall return NULL.] */
00283                     /* Codes_SRS_IOTHUBCLIENT_01_031: [If IoTHubClient_Create fails, all resources allocated by it shall be freed.] */
00284                     Lock_Deinit(result->LockHandle);
00285 #ifdef USE_UPLOADTOBLOB
00286                     list_destroy(result->savedDataToBeCleaned);
00287 #endif
00288                     free(result);
00289                     result = NULL;
00290                 }
00291                 else
00292                 {
00293                     result->TransportHandle = NULL;
00294                     result->ThreadHandle = NULL;
00295                 }
00296             }
00297         }
00298     }
00299 
00300     return result;
00301 }
00302 
00303 IOTHUB_CLIENT_HANDLE IoTHubClient_CreateWithTransport(TRANSPORT_HANDLE transportHandle, const IOTHUB_CLIENT_CONFIG* config)
00304 {
00305     IOTHUB_CLIENT_INSTANCE* result;
00306     /*Codes_SRS_IOTHUBCLIENT_17_013: [ IoTHubClient_CreateWithTransport shall return NULL if transportHandle is NULL. ]*/
00307     /*Codes_SRS_IOTHUBCLIENT_17_014: [ IoTHubClient_CreateWithTransport shall return NULL if config is NULL. ]*/
00308     if (transportHandle == NULL || config == NULL)
00309     {
00310         LogError("invalid parameter TRANSPORT_HANDLE transportHandle=%p, const IOTHUB_CLIENT_CONFIG* config=%p", transportHandle, config);
00311         result = NULL;
00312     }
00313     else
00314     {
00315         /*Codes_SRS_IOTHUBCLIENT_17_001: [ IoTHubClient_CreateWithTransport shall allocate a new IoTHubClient instance and return a non-NULL handle to it. ]*/
00316         result = (IOTHUB_CLIENT_INSTANCE*)malloc(sizeof(IOTHUB_CLIENT_INSTANCE));
00317         /*Codes_SRS_IOTHUBCLIENT_17_002: [ If allocating memory for the new IoTHubClient instance fails, then IoTHubClient_CreateWithTransport shall return NULL. ]*/
00318         if (result == NULL)
00319         {
00320             LogError("unable to malloc");
00321             /*return as is*/
00322         }
00323         else
00324         {
00325 #ifdef USE_UPLOADTOBLOB
00326             /*Codes_SRS_IOTHUBCLIENT_02_073: [ IoTHubClient_CreateWithTransport shall create a LIST_HANDLE that shall be used by IoTHubClient_UploadToBlobAsync. ]*/
00327             if ((result->savedDataToBeCleaned = list_create()) == NULL)
00328             {
00329                 /*Codes_SRS_IOTHUBCLIENT_02_074: [ If creating the LIST_HANDLE fails then IoTHubClient_CreateWithTransport shall fail and return NULL. ]*/
00330                 LogError("unable to list_create");
00331                 free(result);
00332                 result = NULL;
00333             }
00334             else
00335 #endif
00336             {
00337                 result->ThreadHandle = NULL;
00338                 result->TransportHandle = transportHandle;
00339                 /*Codes_SRS_IOTHUBCLIENT_17_005: [ IoTHubClient_CreateWithTransport shall call IoTHubTransport_GetLock to get the transport lock to be used later for serializing IoTHubClient calls. ]*/
00340                 LOCK_HANDLE transportLock = IoTHubTransport_GetLock(transportHandle);
00341                 result->LockHandle = transportLock;
00342                 if (result->LockHandle == NULL)
00343                 {
00344                     LogError("unable to IoTHubTransport_GetLock");
00345                     /*Codes_SRS_IOTHUBCLIENT_17_006: [ If IoTHubTransport_GetLock fails, then IoTHubClient_CreateWithTransport shall return NULL. ]*/
00346 #ifdef USE_UPLOADTOBLOB
00347                     list_destroy(result->savedDataToBeCleaned);
00348 #endif
00349                     free(result);
00350                     result = NULL;
00351                 }
00352                 else
00353                 {
00354                     IOTHUB_CLIENT_DEVICE_CONFIG deviceConfig;
00355                     deviceConfig.deviceId = config->deviceId;
00356                     deviceConfig.deviceKey = config->deviceKey;
00357                     deviceConfig.protocol = config->protocol;
00358                     deviceConfig.deviceSasToken = config->deviceSasToken;
00359                     deviceConfig.protocol = config->protocol;
00360 
00361                     /*Codes_SRS_IOTHUBCLIENT_17_003: [ IoTHubClient_CreateWithTransport shall call IoTHubTransport_GetLLTransport on transportHandle to get lower layer transport. ]*/
00362                     deviceConfig.transportHandle = IoTHubTransport_GetLLTransport(transportHandle);
00363 
00364                     if (deviceConfig.transportHandle == NULL)
00365                     {
00366                         LogError("unable to IoTHubTransport_GetLLTransport");
00367                         /*Codes_SRS_IOTHUBCLIENT_17_004: [ If IoTHubTransport_GetLLTransport fails, then IoTHubClient_CreateWithTransport shall return NULL. ]*/
00368 #ifdef USE_UPLOADTOBLOB
00369                         list_destroy(result->savedDataToBeCleaned);
00370 #endif
00371                         free(result);
00372                         result = NULL;
00373                     }
00374                     else
00375                     {
00376                         if (Lock(transportLock) != LOCK_OK)
00377                         {
00378                             LogError("unable to Lock");
00379 #ifdef USE_UPLOADTOBLOB
00380                             list_destroy(result->savedDataToBeCleaned);
00381 #endif
00382                             free(result);
00383                             result = NULL;
00384                         }
00385                         else
00386                         {
00387                             /*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. ]*/
00388                             result->IoTHubClientLLHandle = IoTHubClient_LL_CreateWithTransport(&deviceConfig);
00389                             if (result->IoTHubClientLLHandle == NULL)
00390                             {
00391                                 LogError("unable to IoTHubClient_LL_CreateWithTransport");
00392                                 /*Codes_SRS_IOTHUBCLIENT_17_008: [ If IoTHubClient_LL_CreateWithTransport fails, then IoTHubClient_Create shall return NULL. ]*/
00393                                 /*Codes_SRS_IOTHUBCLIENT_17_009: [ If IoTHubClient_LL_CreateWithTransport fails, all resources allocated by it shall be freed. ]*/
00394 #ifdef USE_UPLOADTOBLOB
00395                                 list_destroy(result->savedDataToBeCleaned);
00396 #endif
00397                                 free(result);
00398                                 result = NULL;
00399                             }
00400 
00401                             if (Unlock(transportLock) != LOCK_OK)
00402                             {
00403                                 LogError("unable to Unlock");
00404                             }
00405                         }
00406                     }
00407                 }
00408             }
00409         }
00410 
00411     }
00412 
00413     return result;
00414 }
00415 
00416 /* Codes_SRS_IOTHUBCLIENT_01_005: [IoTHubClient_Destroy shall free all resources associated with the iotHubClientHandle instance.] */
00417 void IoTHubClient_Destroy(IOTHUB_CLIENT_HANDLE iotHubClientHandle)
00418 {
00419     /* Codes_SRS_IOTHUBCLIENT_01_008: [IoTHubClient_Destroy shall do nothing if parameter iotHubClientHandle is NULL.] */
00420     if (iotHubClientHandle != NULL)
00421     {
00422         bool okToJoin;
00423 
00424         IOTHUB_CLIENT_INSTANCE* iotHubClientInstance = (IOTHUB_CLIENT_INSTANCE*)iotHubClientHandle;
00425 
00426         /*Codes_SRS_IOTHUBCLIENT_02_043: [ IoTHubClient_Destroy shall lock the serializing lock and signal the worker thread (if any) to end ]*/
00427         if (Lock(iotHubClientInstance->LockHandle) != LOCK_OK)
00428         {
00429             LogError("unable to Lock - - will still proceed to try to end the thread without locking");
00430         }
00431 
00432 #ifdef USE_UPLOADTOBLOB
00433         /*Codes_SRS_IOTHUBCLIENT_02_069: [ IoTHubClient_Destroy shall free all data created by IoTHubClient_UploadToBlobAsync ]*/
00434         /*wait for all uploading threads to finish*/
00435         while (list_get_head_item(iotHubClientInstance->savedDataToBeCleaned) != NULL)
00436         {
00437             garbageCollectorImpl(iotHubClientInstance);
00438         }
00439 #endif
00440         if (iotHubClientInstance->ThreadHandle != NULL)
00441         {
00442             iotHubClientInstance->StopThread = 1;
00443             okToJoin = true;
00444         }
00445         else
00446         {
00447             okToJoin = false;
00448         }
00449 
00450         if (iotHubClientInstance->TransportHandle != NULL)
00451         {
00452             /*Codes_SRS_IOTHUBCLIENT_01_007: [ The thread created as part of executing IoTHubClient_SendEventAsync or IoTHubClient_SetNotificationMessageCallback shall be joined. ]*/
00453             okToJoin = IoTHubTransport_SignalEndWorkerThread(iotHubClientInstance->TransportHandle, iotHubClientHandle);
00454         }
00455 
00456         /* Codes_SRS_IOTHUBCLIENT_01_006: [That includes destroying the IoTHubClient_LL instance by calling IoTHubClient_LL_Destroy.] */
00457         IoTHubClient_LL_Destroy(iotHubClientInstance->IoTHubClientLLHandle);
00458 
00459 #ifdef USE_UPLOADTOBLOB
00460         if (iotHubClientInstance->savedDataToBeCleaned != NULL)
00461         {
00462             list_destroy(iotHubClientInstance->savedDataToBeCleaned);
00463         }
00464 #endif
00465 
00466         /*Codes_SRS_IOTHUBCLIENT_02_045: [ IoTHubClient_Destroy shall unlock the serializing lock. ]*/
00467         if (Unlock(iotHubClientInstance->LockHandle) != LOCK_OK)
00468         {
00469             LogError("unable to Unlock");
00470         }
00471 
00472         if (okToJoin == true)
00473         {
00474             if (iotHubClientInstance->ThreadHandle != NULL)
00475             {
00476                 int res;
00477                 /*Codes_SRS_IOTHUBCLIENT_01_007: [ The thread created as part of executing IoTHubClient_SendEventAsync or IoTHubClient_SetNotificationMessageCallback shall be joined. ]*/
00478                 if (ThreadAPI_Join(iotHubClientInstance->ThreadHandle, &res) != THREADAPI_OK)
00479                 {
00480                     LogError("ThreadAPI_Join failed");
00481                 }
00482             }
00483             if (iotHubClientInstance->TransportHandle != NULL)
00484             {
00485                 /*Codes_SRS_IOTHUBCLIENT_01_007: [ The thread created as part of executing IoTHubClient_SendEventAsync or IoTHubClient_SetNotificationMessageCallback shall be joined. ]*/
00486                 IoTHubTransport_JoinWorkerThread(iotHubClientInstance->TransportHandle, iotHubClientHandle);
00487             }
00488         }
00489 
00490         if (iotHubClientInstance->TransportHandle == NULL)
00491         {
00492             /* Codes_SRS_IOTHUBCLIENT_01_032: [If the lock was allocated in IoTHubClient_Create, it shall be also freed..] */
00493             Lock_Deinit(iotHubClientInstance->LockHandle);
00494         }
00495 
00496         free(iotHubClientInstance);
00497     }
00498 }
00499 
00500 IOTHUB_CLIENT_RESULT IoTHubClient_SendEventAsync(IOTHUB_CLIENT_HANDLE iotHubClientHandle, IOTHUB_MESSAGE_HANDLE eventMessageHandle, IOTHUB_CLIENT_EVENT_CONFIRMATION_CALLBACK eventConfirmationCallback, void* userContextCallback)
00501 {
00502     IOTHUB_CLIENT_RESULT result;
00503 
00504     if (iotHubClientHandle == NULL)
00505     {
00506         /* Codes_SRS_IOTHUBCLIENT_01_011: [If iotHubClientHandle is NULL, IoTHubClient_SendEventAsync shall return IOTHUB_CLIENT_INVALID_ARG.] */
00507         result = IOTHUB_CLIENT_INVALID_ARG;
00508         LogError("NULL iothubClientHandle");
00509     }
00510     else
00511     {
00512         IOTHUB_CLIENT_INSTANCE* iotHubClientInstance = (IOTHUB_CLIENT_INSTANCE*)iotHubClientHandle;
00513 
00514         /* Codes_SRS_IOTHUBCLIENT_01_025: [IoTHubClient_SendEventAsync shall be made thread-safe by using the lock created in IoTHubClient_Create.] */
00515         if (Lock(iotHubClientInstance->LockHandle) != LOCK_OK)
00516         {
00517             /* Codes_SRS_IOTHUBCLIENT_01_026: [If acquiring the lock fails, IoTHubClient_SendEventAsync shall return IOTHUB_CLIENT_ERROR.] */
00518             result = IOTHUB_CLIENT_ERROR;
00519             LogError("Could not acquire lock");
00520         }
00521         else
00522         {
00523             /* Codes_SRS_IOTHUBCLIENT_01_009: [IoTHubClient_SendEventAsync shall start the worker thread if it was not previously started.] */
00524             if ((result = StartWorkerThreadIfNeeded(iotHubClientInstance)) != IOTHUB_CLIENT_OK)
00525             {
00526                 /* Codes_SRS_IOTHUBCLIENT_01_010: [If starting the thread fails, IoTHubClient_SendEventAsync shall return IOTHUB_CLIENT_ERROR.] */
00527                 result = IOTHUB_CLIENT_ERROR;
00528                 LogError("Could not start worker thread");
00529             }
00530             else
00531             {
00532                 /* 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.] */
00533                 /* Codes_SRS_IOTHUBCLIENT_01_013: [When IoTHubClient_LL_SendEventAsync is called, IoTHubClient_SendEventAsync shall return the result of IoTHubClient_LL_SendEventAsync.] */
00534                 result = IoTHubClient_LL_SendEventAsync(iotHubClientInstance->IoTHubClientLLHandle, eventMessageHandle, eventConfirmationCallback, userContextCallback);
00535             }
00536 
00537             /* Codes_SRS_IOTHUBCLIENT_01_025: [IoTHubClient_SendEventAsync shall be made thread-safe by using the lock created in IoTHubClient_Create.] */
00538             (void)Unlock(iotHubClientInstance->LockHandle);
00539         }
00540     }
00541 
00542     return result;
00543 }
00544 
00545 IOTHUB_CLIENT_RESULT IoTHubClient_GetSendStatus(IOTHUB_CLIENT_HANDLE iotHubClientHandle, IOTHUB_CLIENT_STATUS *iotHubClientStatus)
00546 {
00547     IOTHUB_CLIENT_RESULT result;
00548 
00549     if (iotHubClientHandle == NULL)
00550     {
00551         /* Codes_SRS_IOTHUBCLIENT_01_023: [If iotHubClientHandle is NULL, IoTHubClient_ GetSendStatus shall return IOTHUB_CLIENT_INVALID_ARG.] */
00552         result = IOTHUB_CLIENT_INVALID_ARG;
00553         LogError("NULL iothubClientHandle");
00554     }
00555     else
00556     {
00557         IOTHUB_CLIENT_INSTANCE* iotHubClientInstance = (IOTHUB_CLIENT_INSTANCE*)iotHubClientHandle;
00558 
00559         /* Codes_SRS_IOTHUBCLIENT_01_033: [IoTHubClient_GetSendStatus shall be made thread-safe by using the lock created in IoTHubClient_Create.] */
00560         if (Lock(iotHubClientInstance->LockHandle) != LOCK_OK)
00561         {
00562             /* Codes_SRS_IOTHUBCLIENT_01_034: [If acquiring the lock fails, IoTHubClient_GetSendStatus shall return IOTHUB_CLIENT_ERROR.] */
00563             result = IOTHUB_CLIENT_ERROR;
00564             LogError("Could not acquire lock");
00565         }
00566         else
00567         {
00568             /* 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.] */
00569             /* Codes_SRS_IOTHUBCLIENT_01_024: [Otherwise, IoTHubClient_GetSendStatus shall return the result of IoTHubClient_LL_GetSendStatus.] */
00570             result = IoTHubClient_LL_GetSendStatus(iotHubClientInstance->IoTHubClientLLHandle, iotHubClientStatus);
00571 
00572             /* Codes_SRS_IOTHUBCLIENT_01_033: [IoTHubClient_GetSendStatus shall be made thread-safe by using the lock created in IoTHubClient_Create.] */
00573             (void)Unlock(iotHubClientInstance->LockHandle);
00574         }
00575     }
00576 
00577     return result;
00578 }
00579 
00580 IOTHUB_CLIENT_RESULT IoTHubClient_SetMessageCallback(IOTHUB_CLIENT_HANDLE iotHubClientHandle, IOTHUB_CLIENT_MESSAGE_CALLBACK_ASYNC messageCallback, void* userContextCallback)
00581 {
00582     IOTHUB_CLIENT_RESULT result;
00583 
00584     if (iotHubClientHandle == NULL)
00585     {
00586         /* Codes_SRS_IOTHUBCLIENT_01_016: [If iotHubClientHandle is NULL, IoTHubClient_SetMessageCallback shall return IOTHUB_CLIENT_INVALID_ARG.] */
00587         result = IOTHUB_CLIENT_INVALID_ARG;
00588         LogError("NULL iothubClientHandle");
00589     }
00590     else
00591     {
00592         IOTHUB_CLIENT_INSTANCE* iotHubClientInstance = (IOTHUB_CLIENT_INSTANCE*)iotHubClientHandle;
00593 
00594         /* Codes_SRS_IOTHUBCLIENT_01_027: [IoTHubClient_SetMessageCallback shall be made thread-safe by using the lock created in IoTHubClient_Create.] */
00595         if (Lock(iotHubClientInstance->LockHandle) != LOCK_OK)
00596         {
00597             /* Codes_SRS_IOTHUBCLIENT_01_028: [If acquiring the lock fails, IoTHubClient_SetMessageCallback shall return IOTHUB_CLIENT_ERROR.] */
00598             result = IOTHUB_CLIENT_ERROR;
00599             LogError("Could not acquire lock");
00600         }
00601         else
00602         {
00603             /* Codes_SRS_IOTHUBCLIENT_01_014: [IoTHubClient_SetMessageCallback shall start the worker thread if it was not previously started.] */
00604             if ((result = StartWorkerThreadIfNeeded(iotHubClientInstance)) != IOTHUB_CLIENT_OK)
00605             {
00606                 /* Codes_SRS_IOTHUBCLIENT_01_015: [If starting the thread fails, IoTHubClient_SetMessageCallback shall return IOTHUB_CLIENT_ERROR.] */
00607                 result = IOTHUB_CLIENT_ERROR;
00608                 LogError("Could not start worker thread");
00609             }
00610             else
00611             {
00612                 /* 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.] */
00613                 result = IoTHubClient_LL_SetMessageCallback(iotHubClientInstance->IoTHubClientLLHandle, messageCallback, userContextCallback);
00614             }
00615 
00616             /* Codes_SRS_IOTHUBCLIENT_01_027: [IoTHubClient_SetMessageCallback shall be made thread-safe by using the lock created in IoTHubClient_Create.] */
00617             Unlock(iotHubClientInstance->LockHandle);
00618         }
00619     }
00620 
00621     return result;
00622 }
00623 
00624 IOTHUB_CLIENT_RESULT IoTHubClient_GetLastMessageReceiveTime(IOTHUB_CLIENT_HANDLE iotHubClientHandle, time_t* lastMessageReceiveTime)
00625 {
00626     IOTHUB_CLIENT_RESULT result;
00627 
00628     if (iotHubClientHandle == NULL)
00629     {
00630         /* Codes_SRS_IOTHUBCLIENT_01_020: [If iotHubClientHandle is NULL, IoTHubClient_GetLastMessageReceiveTime shall return IOTHUB_CLIENT_INVALID_ARG.] */
00631         result = IOTHUB_CLIENT_INVALID_ARG;
00632         LogError("NULL iothubClientHandle");
00633     }
00634     else
00635     {
00636         IOTHUB_CLIENT_INSTANCE* iotHubClientInstance = (IOTHUB_CLIENT_INSTANCE*)iotHubClientHandle;
00637 
00638         /* Codes_SRS_IOTHUBCLIENT_01_035: [IoTHubClient_GetLastMessageReceiveTime shall be made thread-safe by using the lock created in IoTHubClient_Create.] */
00639         if (Lock(iotHubClientInstance->LockHandle) != LOCK_OK)
00640         {
00641             /* Codes_SRS_IOTHUBCLIENT_01_036: [If acquiring the lock fails, IoTHubClient_GetLastMessageReceiveTime shall return IOTHUB_CLIENT_ERROR.] */
00642             result = IOTHUB_CLIENT_ERROR;
00643             LogError("Could not acquire lock");
00644         }
00645         else
00646         {
00647             /* 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.] */
00648             /* Codes_SRS_IOTHUBCLIENT_01_021: [Otherwise, IoTHubClient_GetLastMessageReceiveTime shall return the result of IoTHubClient_LL_GetLastMessageReceiveTime.] */
00649             result = IoTHubClient_LL_GetLastMessageReceiveTime(iotHubClientInstance->IoTHubClientLLHandle, lastMessageReceiveTime);
00650 
00651             /* Codes_SRS_IOTHUBCLIENT_01_035: [IoTHubClient_GetLastMessageReceiveTime shall be made thread-safe by using the lock created in IoTHubClient_Create.] */
00652             Unlock(iotHubClientInstance->LockHandle);
00653         }
00654     }
00655 
00656     return result;
00657 }
00658 
00659 IOTHUB_CLIENT_RESULT IoTHubClient_SetOption(IOTHUB_CLIENT_HANDLE iotHubClientHandle, const char* optionName, const void* value)
00660 {
00661     IOTHUB_CLIENT_RESULT result;
00662     /*Codes_SRS_IOTHUBCLIENT_02_034: [If parameter iotHubClientHandle is NULL then IoTHubClient_SetOption shall return IOTHUB_CLIENT_INVALID_ARG.] */
00663     /*Codes_SRS_IOTHUBCLIENT_02_035: [ If parameter optionName is NULL then IoTHubClient_SetOption shall return IOTHUB_CLIENT_INVALID_ARG. ]*/
00664     /*Codes_SRS_IOTHUBCLIENT_02_036: [ If parameter value is NULL then IoTHubClient_SetOption shall return IOTHUB_CLIENT_INVALID_ARG. ]*/
00665     if (
00666         (iotHubClientHandle == NULL) ||
00667         (optionName == NULL) ||
00668         (value == NULL)
00669         )
00670     {
00671         result = IOTHUB_CLIENT_INVALID_ARG;
00672         LogError("invalid arg (NULL)r\n");
00673     }
00674     else
00675     {
00676         IOTHUB_CLIENT_INSTANCE* iotHubClientInstance = (IOTHUB_CLIENT_INSTANCE*)iotHubClientHandle;
00677 
00678         /* Codes_SRS_IOTHUBCLIENT_01_041: [ IoTHubClient_SetOption shall be made thread-safe by using the lock created in IoTHubClient_Create. ]*/
00679         if (Lock(iotHubClientInstance->LockHandle) != LOCK_OK)
00680         {
00681             /* Codes_SRS_IOTHUBCLIENT_01_042: [ If acquiring the lock fails, IoTHubClient_GetLastMessageReceiveTime shall return IOTHUB_CLIENT_ERROR. ]*/
00682             result = IOTHUB_CLIENT_ERROR;
00683             LogError("Could not acquire lock");
00684         }
00685         else
00686         {
00687             /*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.] */
00688             result = IoTHubClient_LL_SetOption(iotHubClientInstance->IoTHubClientLLHandle, optionName, value);
00689             if (result != IOTHUB_CLIENT_OK)
00690             {
00691                 LogError("IoTHubClient_LL_SetOption failed");
00692             }
00693 
00694             Unlock(iotHubClientInstance->LockHandle);
00695         }
00696     }
00697     return result;
00698 }
00699 
00700 #ifdef USE_UPLOADTOBLOB
00701 static int uploadingThread(void *data)
00702 {
00703     UPLOADTOBLOB_SAVED_DATA* savedData = (UPLOADTOBLOB_SAVED_DATA*)data;
00704 
00705     /*it so happens that IoTHubClient_LL_UploadToBlob is thread-safe because there's no saved state in the handle and there are no globals, so no need to protect it*/
00706     /*not having it protected means multiple simultaneous uploads can happen*/
00707     /*Codes_SRS_IOTHUBCLIENT_02_054: [ The thread shall call IoTHubClient_LL_UploadToBlob passing the information packed in the structure. ]*/
00708     if (IoTHubClient_LL_UploadToBlob(savedData->iotHubClientHandle->IoTHubClientLLHandle, savedData->destinationFileName, savedData->source, savedData->size) != IOTHUB_CLIENT_OK)
00709     {
00710         LogError("unable to IoTHubClient_LL_UploadToBlob");
00711         /*call the callback*/
00712         if (savedData->iotHubClientFileUploadCallback != NULL)
00713         {
00714             /*Codes_SRS_IOTHUBCLIENT_02_055: [ If IoTHubClient_LL_UploadToBlob fails then the thread shall call iotHubClientFileUploadCallbackInternal passing as result FILE_UPLOAD_ERROR and as context the structure from SRS IOTHUBCLIENT 02 051. ]*/
00715             savedData->iotHubClientFileUploadCallback(FILE_UPLOAD_ERROR, savedData->context);
00716         }
00717     }
00718     else
00719     {
00720         if (savedData->iotHubClientFileUploadCallback != NULL)
00721         {
00722             /*Codes_SRS_IOTHUBCLIENT_02_056: [ Otherwise the thread iotHubClientFileUploadCallbackInternal passing as result FILE_UPLOAD_OK and the structure from SRS IOTHUBCLIENT 02 051. ]*/
00723             savedData->iotHubClientFileUploadCallback(FILE_UPLOAD_OK, savedData->context);
00724         }
00725     }
00726 
00727     /*Codes_SRS_IOTHUBCLIENT_02_071: [ The thread shall mark itself as disposable. ]*/
00728     if (Lock(savedData->lockGarbage) != LOCK_OK)
00729     {
00730         LogError("unable to Lock - trying anyway");
00731         savedData->canBeGarbageCollected = 1;
00732     }
00733     else
00734     {
00735         savedData->canBeGarbageCollected = 1;
00736 
00737         if (Unlock(savedData->lockGarbage) != LOCK_OK)
00738         {
00739             LogError("unable to Unlock after locking");
00740         }
00741     }
00742     return 0;
00743 }
00744 #endif
00745 
00746 #ifdef USE_UPLOADTOBLOB
00747 IOTHUB_CLIENT_RESULT IoTHubClient_UploadToBlobAsync(IOTHUB_CLIENT_HANDLE iotHubClientHandle, const char* destinationFileName, const unsigned char* source, size_t size, IOTHUB_CLIENT_FILE_UPLOAD_CALLBACK iotHubClientFileUploadCallback, void* context)
00748 {
00749     IOTHUB_CLIENT_RESULT result;
00750     /*Codes_SRS_IOTHUBCLIENT_02_047: [ If iotHubClientHandle is NULL then IoTHubClient_UploadToBlobAsync shall fail and return IOTHUB_CLIENT_INVALID_ARG. ]*/
00751     /*Codes_SRS_IOTHUBCLIENT_02_048: [ If destinationFileName is NULL then IoTHubClient_UploadToBlobAsync shall fail and return IOTHUB_CLIENT_INVALID_ARG. ]*/
00752     /*Codes_SRS_IOTHUBCLIENT_02_049: [ If source is NULL and size is greated than 0 then IoTHubClient_UploadToBlobAsync shall fail and return IOTHUB_CLIENT_INVALID_ARG. ]*/
00753     if (
00754         (iotHubClientHandle == NULL) ||
00755         (destinationFileName == NULL) ||
00756         ((source == NULL) && (size > 0))
00757         )
00758     {
00759         LogError("invalid parameters IOTHUB_CLIENT_HANDLE iotHubClientHandle = %p , const char* destinationFileName = %s, const unsigned char* source= %p, size_t size = %zu, IOTHUB_CLIENT_FILE_UPLOAD_CALLBACK iotHubClientFileUploadCallback = %p, void* context = %p",
00760             iotHubClientHandle,
00761             destinationFileName,
00762             source,
00763             size,
00764             iotHubClientFileUploadCallback,
00765             context
00766         );
00767         result = IOTHUB_CLIENT_INVALID_ARG;
00768     }
00769     else
00770     {
00771         /*Codes_SRS_IOTHUBCLIENT_02_051: [IoTHubClient_UploadToBlobAsync shall copy the souce, size, iotHubClientFileUploadCallback, context into a structure.]*/
00772         UPLOADTOBLOB_SAVED_DATA *savedData = (UPLOADTOBLOB_SAVED_DATA *)malloc(sizeof(UPLOADTOBLOB_SAVED_DATA));
00773         if (savedData == NULL)
00774         {
00775             /*Codes_SRS_IOTHUBCLIENT_02_053: [ If copying to the structure or spawning the thread fails, then IoTHubClient_UploadToBlobAsync shall fail and return IOTHUB_CLIENT_ERROR. ]*/
00776             LogError("unable to malloc - oom");
00777             result = IOTHUB_CLIENT_ERROR;
00778         }
00779         else
00780         {
00781             if (mallocAndStrcpy_s((char**)&savedData->destinationFileName, destinationFileName) != 0)
00782             {
00783                 /*Codes_SRS_IOTHUBCLIENT_02_053: [ If copying to the structure or spawning the thread fails, then IoTHubClient_UploadToBlobAsync shall fail and return IOTHUB_CLIENT_ERROR. ]*/
00784                 LogError("unable to mallocAndStrcpy_s");
00785                 free(savedData);
00786                 result = IOTHUB_CLIENT_ERROR;
00787             }
00788             else
00789             {
00790                 savedData->size = size;
00791                 int sourceCloned;
00792                 if (size == 0)
00793                 {
00794                     savedData->source = NULL;
00795                     sourceCloned = 1;
00796                 }
00797                 else
00798                 {
00799                     savedData->source = (unsigned char*)malloc(size);
00800                     if (savedData->source == NULL)
00801                     {
00802                         /*Codes_SRS_IOTHUBCLIENT_02_053: [ If copying to the structure or spawning the thread fails, then IoTHubClient_UploadToBlobAsync shall fail and return IOTHUB_CLIENT_ERROR. ]*/
00803                         LogError("unable to malloc - oom");
00804                         free(savedData->destinationFileName);
00805                         free(savedData);
00806                         sourceCloned = 0;
00807 
00808                     }
00809                     else
00810                     {
00811                         sourceCloned = 1;
00812                     }
00813                 }
00814 
00815                 if (sourceCloned == 0)
00816                 {
00817                     result = IOTHUB_CLIENT_ERROR;
00818                 }
00819                 else
00820                 {
00821                     savedData->iotHubClientFileUploadCallback = iotHubClientFileUploadCallback;
00822                     savedData->context = context;
00823                     memcpy(savedData->source, source, size);
00824                     IOTHUB_CLIENT_INSTANCE* iotHubClientHandleData = (IOTHUB_CLIENT_INSTANCE*)iotHubClientHandle;
00825                     if (Lock(iotHubClientHandleData->LockHandle) != LOCK_OK) /*locking because the next statement is changing blobThreadsToBeJoined*/
00826                     {
00827                         LogError("unable to lock");
00828                         free(savedData->source);
00829                         free(savedData->destinationFileName);
00830                         free(savedData);
00831                         result = IOTHUB_CLIENT_ERROR;
00832                     }
00833                     else
00834                     {
00835                         if ((result = StartWorkerThreadIfNeeded(iotHubClientHandleData)) != IOTHUB_CLIENT_OK)
00836                         {
00837                             free(savedData->source);
00838                             free(savedData->destinationFileName);
00839                             free(savedData);
00840                             result = IOTHUB_CLIENT_ERROR;
00841                             LogError("Could not start worker thread");
00842                         }
00843                         else
00844                         {
00845                             /*Codes_SRS_IOTHUBCLIENT_02_058: [ IoTHubClient_UploadToBlobAsync shall add the structure to the list of structures that need to be cleaned once file upload finishes. ]*/
00846                             LIST_ITEM_HANDLE item = list_add(iotHubClientHandleData->savedDataToBeCleaned, savedData);
00847                             if (item == NULL)
00848                             {
00849                                 LogError("unable to list_add");
00850                                 free(savedData->source);
00851                                 free(savedData->destinationFileName);
00852                                 free(savedData);
00853                                 result = IOTHUB_CLIENT_ERROR;
00854                             }
00855                             else
00856                             {
00857                                 savedData->iotHubClientHandle = iotHubClientHandle;
00858                                 savedData->canBeGarbageCollected = 0;
00859                                 if ((savedData->lockGarbage = Lock_Init()) == NULL)
00860                                 {
00861                                     (void)list_remove(iotHubClientHandleData->savedDataToBeCleaned, item);
00862                                     free(savedData->source);
00863                                     free(savedData->destinationFileName);
00864                                     free(savedData);
00865                                     result = IOTHUB_CLIENT_ERROR;
00866                                     LogError("unable to Lock_Init");
00867                                 }
00868                                 else
00869                                 {
00870                                     /*Codes_SRS_IOTHUBCLIENT_02_052: [ IoTHubClient_UploadToBlobAsync shall spawn a thread passing the structure build in SRS IOTHUBCLIENT 02 051 as thread data.]*/
00871                                     if (ThreadAPI_Create(&savedData->uploadingThreadHandle, uploadingThread, savedData) != THREADAPI_OK)
00872                                     {
00873                                         /*Codes_SRS_IOTHUBCLIENT_02_053: [ If copying to the structure or spawning the thread fails, then IoTHubClient_UploadToBlobAsync shall fail and return IOTHUB_CLIENT_ERROR. ]*/
00874                                         LogError("unablet to ThreadAPI_Create");
00875                                         (void)Lock_Deinit(savedData->lockGarbage);
00876                                         (void)list_remove(iotHubClientHandleData->savedDataToBeCleaned, item);
00877                                         free(savedData->source);
00878                                         free(savedData->destinationFileName);
00879                                         free(savedData);
00880                                         result = IOTHUB_CLIENT_ERROR;
00881                                     }
00882                                     else
00883                                     {
00884 
00885                                         result = IOTHUB_CLIENT_OK;
00886                                     }
00887                                 }
00888                             }
00889                         }
00890                         Unlock(iotHubClientHandleData->LockHandle);
00891                     }
00892                 }
00893             }
00894         }
00895     }
00896     return result;
00897 }
00898 #endif /*USE_UPLOADTOBLOB*/