[398] | 1 | // Copyright (c) Microsoft. All rights reserved.
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| 2 | // Licensed under the MIT license. See LICENSE file in the project root for full license information.
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| 3 |
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| 4 | /** @file iothub_client.h
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| 5 | * @brief Extends the IoTHubCLient_LL module with additional features.
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| 6 | *
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| 7 | * @details IoTHubClient is a module that extends the IoTHubCLient_LL
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| 8 | * module with 2 features:
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| 9 | * - scheduling the work for the IoTHubCLient from a
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| 10 | * thread, so that the user does not need to create their
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| 11 | * own thread
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| 12 | * - thread-safe APIs
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| 13 | */
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| 14 |
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| 15 | #ifndef IOTHUB_CLIENT_H
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| 16 | #define IOTHUB_CLIENT_H
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| 17 |
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| 18 | #include <stddef.h>
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| 19 | #include <stdint.h>
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| 20 |
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| 21 | #include "azure_c_shared_utility/umock_c_prod.h"
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| 22 | #include "iothub_transport_ll.h"
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| 23 | #include "iothub_client_core_ll.h"
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| 24 | #include "iothub_client_core.h"
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| 25 | #include "iothub_client_ll.h"
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| 26 |
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| 27 | #ifndef IOTHUB_CLIENT_INSTANCE_TYPE
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| 28 | typedef IOTHUB_CLIENT_CORE_HANDLE IOTHUB_CLIENT_HANDLE;
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| 29 | #define IOTHUB_CLIENT_INSTANCE_TYPE
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| 30 | #endif // IOTHUB_CLIENT_INSTANCE
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| 31 |
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| 32 |
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| 33 | #ifdef __cplusplus
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| 34 | extern "C"
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| 35 | {
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| 36 | #endif
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| 37 |
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| 38 | /**
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| 39 | * @brief Creates a IoT Hub client for communication with an existing
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| 40 | * IoT Hub using the specified connection string parameter.
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| 41 | *
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| 42 | * @param connectionString Pointer to a character string
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| 43 | * @param protocol Function pointer for protocol implementation
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| 44 | *
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| 45 | * Sample connection string:
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| 46 | * <blockquote>
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| 47 | * <pre>HostName=[IoT Hub name goes here].[IoT Hub suffix goes here, e.g., private.azure-devices-int.net];DeviceId=[Device ID goes here];SharedAccessKey=[Device key goes here];</pre>
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| 48 | * <pre>HostName=[IoT Hub name goes here].[IoT Hub suffix goes here, e.g., private.azure-devices-int.net];DeviceId=[Device ID goes here];SharedAccessSignature=SharedAccessSignature sr=[IoT Hub name goes here].[IoT Hub suffix goes here, e.g., private.azure-devices-int.net]/devices/[Device ID goes here]&sig=[SAS Token goes here]&se=[Expiry Time goes here];</pre>
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| 49 | * </blockquote>
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| 50 | *
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| 51 | * @return A non-NULL @c IOTHUB_CLIENT_HANDLE value that is used when
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| 52 | * invoking other functions for IoT Hub client and @c NULL on failure.
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| 53 | */
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| 54 | MOCKABLE_FUNCTION(, IOTHUB_CLIENT_HANDLE, IoTHubClient_CreateFromConnectionString, const char*, connectionString, IOTHUB_CLIENT_TRANSPORT_PROVIDER, protocol);
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| 55 |
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| 56 | /**
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| 57 | * @brief Creates a IoT Hub client for communication with an existing IoT
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| 58 | * Hub using the specified parameters.
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| 59 | *
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| 60 | * @param config Pointer to an @c IOTHUB_CLIENT_CONFIG structure
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| 61 | *
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| 62 | * The API does not allow sharing of a connection across multiple
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| 63 | * devices. This is a blocking call.
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| 64 | *
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| 65 | * @return A non-NULL @c IOTHUB_CLIENT_HANDLE value that is used when
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| 66 | * invoking other functions for IoT Hub client and @c NULL on failure.
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| 67 | */
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| 68 | MOCKABLE_FUNCTION(, IOTHUB_CLIENT_HANDLE, IoTHubClient_Create, const IOTHUB_CLIENT_CONFIG*, config);
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| 69 |
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| 70 | /**
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| 71 | * @brief Creates a IoT Hub client for communication with an existing IoT
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| 72 | * Hub using the specified parameters.
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| 73 | *
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| 74 | * @param transportHandle TRANSPORT_HANDLE which represents a connection.
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| 75 | * @param config Pointer to an @c IOTHUB_CLIENT_CONFIG structure
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| 76 | *
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| 77 | * The API allows sharing of a connection across multiple
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| 78 | * devices. This is a blocking call.
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| 79 | *
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| 80 | * @return A non-NULL @c IOTHUB_CLIENT_HANDLE value that is used when
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| 81 | * invoking other functions for IoT Hub client and @c NULL on failure.
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| 82 | */
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| 83 | MOCKABLE_FUNCTION(, IOTHUB_CLIENT_HANDLE, IoTHubClient_CreateWithTransport, TRANSPORT_HANDLE, transportHandle, const IOTHUB_CLIENT_CONFIG*, config);
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| 84 |
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| 85 | /**
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| 86 | * @brief Creates a IoT Hub client for communication with an existing IoT
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| 87 | * Hub using the device auth module.
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| 88 | *
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| 89 | * @param iothub_uri Pointer to an ioThub hostname received in the registration process
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| 90 | * @param device_id Pointer to the device Id of the device
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| 91 | * @param protocol Function pointer for protocol implementation
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| 92 | *
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| 93 | * @return A non-NULL @c IOTHUB_CLIENT_LL_HANDLE value that is used when
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| 94 | * invoking other functions for IoT Hub client and @c NULL on failure.
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| 95 | */
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| 96 | MOCKABLE_FUNCTION(, IOTHUB_CLIENT_HANDLE, IoTHubClient_CreateFromDeviceAuth, const char*, iothub_uri, const char*, device_id, IOTHUB_CLIENT_TRANSPORT_PROVIDER, protocol);
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| 97 |
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| 98 | /**
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| 99 | * @brief Disposes of resources allocated by the IoT Hub client. This is a
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| 100 | * blocking call.
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| 101 | *
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| 102 | * @param iotHubClientHandle The handle created by a call to the create function.
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| 103 | */
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| 104 | MOCKABLE_FUNCTION(, void, IoTHubClient_Destroy, IOTHUB_CLIENT_HANDLE, iotHubClientHandle);
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| 105 |
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| 106 | /**
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| 107 | * @brief Asynchronous call to send the message specified by @p eventMessageHandle.
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| 108 | *
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| 109 | * @param iotHubClientHandle The handle created by a call to the create function.
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| 110 | * @param eventMessageHandle The handle to an IoT Hub message.
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| 111 | * @param eventConfirmationCallback The callback specified by the device for receiving
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| 112 | * confirmation of the delivery of the IoT Hub message.
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| 113 | * This callback can be expected to invoke the
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| 114 | * ::IoTHubClient_SendEventAsync function for the
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| 115 | * same message in an attempt to retry sending a failing
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| 116 | * message. The user can specify a @c NULL value here to
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| 117 | * indicate that no callback is required.
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| 118 | * @param userContextCallback User specified context that will be provided to the
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| 119 | * callback. This can be @c NULL.
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| 120 | *
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| 121 | * @b NOTE: The application behavior is undefined if the user calls
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| 122 | * the ::IoTHubClient_Destroy function from within any callback.
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| 123 | *
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| 124 | * @return IOTHUB_CLIENT_OK upon success or an error code upon failure.
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| 125 | */
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| 126 | MOCKABLE_FUNCTION(, IOTHUB_CLIENT_RESULT, IoTHubClient_SendEventAsync, IOTHUB_CLIENT_HANDLE, iotHubClientHandle, IOTHUB_MESSAGE_HANDLE, eventMessageHandle, IOTHUB_CLIENT_EVENT_CONFIRMATION_CALLBACK, eventConfirmationCallback, void*, userContextCallback);
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| 127 |
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| 128 | /**
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| 129 | * @brief This function returns the current sending status for IoTHubClient.
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| 130 | *
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| 131 | * @param iotHubClientHandle The handle created by a call to the create function.
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| 132 | * @param iotHubClientStatus The sending state is populated at the address pointed
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| 133 | * at by this parameter. The value will be set to
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| 134 | * @c IOTHUBCLIENT_SENDSTATUS_IDLE if there is currently
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| 135 | * no item to be sent and @c IOTHUBCLIENT_SENDSTATUS_BUSY
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| 136 | * if there are.
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| 137 | *
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| 138 | * @return IOTHUB_CLIENT_OK upon success or an error code upon failure.
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| 139 | */
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| 140 | MOCKABLE_FUNCTION(, IOTHUB_CLIENT_RESULT, IoTHubClient_GetSendStatus, IOTHUB_CLIENT_HANDLE, iotHubClientHandle, IOTHUB_CLIENT_STATUS*, iotHubClientStatus);
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| 141 |
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| 142 | /**
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| 143 | * @brief Sets up the message callback to be invoked when IoT Hub issues a
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| 144 | * message to the device. This is a blocking call.
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| 145 | *
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| 146 | * @param iotHubClientHandle The handle created by a call to the create function.
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| 147 | * @param messageCallback The callback specified by the device for receiving
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| 148 | * messages from IoT Hub.
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| 149 | * @param userContextCallback User specified context that will be provided to the
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| 150 | * callback. This can be @c NULL.
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| 151 | *
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| 152 | * @b NOTE: The application behavior is undefined if the user calls
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| 153 | * the ::IoTHubClient_Destroy function from within any callback.
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| 154 | *
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| 155 | * @return IOTHUB_CLIENT_OK upon success or an error code upon failure.
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| 156 | */
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| 157 | MOCKABLE_FUNCTION(, IOTHUB_CLIENT_RESULT, IoTHubClient_SetMessageCallback, IOTHUB_CLIENT_HANDLE, iotHubClientHandle, IOTHUB_CLIENT_MESSAGE_CALLBACK_ASYNC, messageCallback, void*, userContextCallback);
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| 158 |
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| 159 | /**
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| 160 | * @brief Sets up the connection status callback to be invoked representing the status of
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| 161 | * the connection to IOT Hub. This is a blocking call.
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| 162 | *
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| 163 | * @param iotHubClientHandle The handle created by a call to the create function.
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| 164 | * @param connectionStatusCallback The callback specified by the device for receiving
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| 165 | * updates about the status of the connection to IoT Hub.
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| 166 | * @param userContextCallback User specified context that will be provided to the
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| 167 | * callback. This can be @c NULL.
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| 168 | *
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| 169 | * @b NOTE: The application behavior is undefined if the user calls
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| 170 | * the ::IoTHubClient_LL_Destroy function from within any callback.
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| 171 | *
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| 172 | * @return IOTHUB_CLIENT_OK upon success or an error code upon failure.
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| 173 | */
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| 174 | MOCKABLE_FUNCTION(, IOTHUB_CLIENT_RESULT, IoTHubClient_SetConnectionStatusCallback, IOTHUB_CLIENT_HANDLE, iotHubClientHandle, IOTHUB_CLIENT_CONNECTION_STATUS_CALLBACK, connectionStatusCallback, void*, userContextCallback);
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| 175 |
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| 176 | /**
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| 177 | * @brief Sets up the connection status callback to be invoked representing the status of
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| 178 | * the connection to IOT Hub. This is a blocking call.
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| 179 | *
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| 180 | * @param iotHubClientHandle The handle created by a call to the create function.
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| 181 | * @param retryPolicy The policy to use to reconnect to IoT Hub when a
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| 182 | * connection drops.
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| 183 | * @param retryTimeoutLimitInSeconds Maximum amount of time(seconds) to attempt reconnection when a
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| 184 | * connection drops to IOT Hub.
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| 185 | *
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| 186 | * @b NOTE: The application behavior is undefined if the user calls
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| 187 | * the ::IoTHubClient_LL_Destroy function from within any callback.
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| 188 | *
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| 189 | * @return IOTHUB_CLIENT_OK upon success or an error code upon failure.
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| 190 | */
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| 191 | MOCKABLE_FUNCTION(, IOTHUB_CLIENT_RESULT, IoTHubClient_SetRetryPolicy, IOTHUB_CLIENT_HANDLE, iotHubClientHandle, IOTHUB_CLIENT_RETRY_POLICY, retryPolicy, size_t, retryTimeoutLimitInSeconds);
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| 192 |
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| 193 | /**
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| 194 | * @brief Sets up the connection status callback to be invoked representing the status of
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| 195 | * the connection to IOT Hub. This is a blocking call.
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| 196 | *
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| 197 | * @param iotHubClientHandle The handle created by a call to the create function.
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| 198 | * @param retryPolicy Out parameter containing the policy to use to reconnect to IoT Hub.
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| 199 | * @param retryTimeoutLimitInSeconds Out parameter containing maximum amount of time in seconds to attempt reconnection
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| 200 | to IOT Hub.
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| 201 | *
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| 202 | * @b NOTE: The application behavior is undefined if the user calls
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| 203 | * the ::IoTHubClient_LL_Destroy function from within any callback.
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| 204 | *
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| 205 | * @return IOTHUB_CLIENT_OK upon success or an error code upon failure.
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| 206 | */
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| 207 | MOCKABLE_FUNCTION(, IOTHUB_CLIENT_RESULT, IoTHubClient_GetRetryPolicy, IOTHUB_CLIENT_HANDLE, iotHubClientHandle, IOTHUB_CLIENT_RETRY_POLICY*, retryPolicy, size_t*, retryTimeoutLimitInSeconds);
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| 208 |
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| 209 | /**
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| 210 | * @brief This function returns in the out parameter @p lastMessageReceiveTime
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| 211 | * what was the value of the @c time function when the last message was
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| 212 | * received at the client.
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| 213 | *
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| 214 | * @param iotHubClientHandle The handle created by a call to the create function.
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| 215 | * @param lastMessageReceiveTime Out parameter containing the value of @c time function
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| 216 | * when the last message was received.
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| 217 | *
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| 218 | * @return IOTHUB_CLIENT_OK upon success or an error code upon failure.
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| 219 | */
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| 220 | MOCKABLE_FUNCTION(, IOTHUB_CLIENT_RESULT, IoTHubClient_GetLastMessageReceiveTime, IOTHUB_CLIENT_HANDLE, iotHubClientHandle, time_t*, lastMessageReceiveTime);
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| 221 |
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| 222 | /**
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| 223 | * @brief This API sets a runtime option identified by parameter @p optionName
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| 224 | * to a value pointed to by @p value. @p optionName and the data type
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| 225 | * @p value is pointing to are specific for every option.
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| 226 | *
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| 227 | * @param iotHubClientHandle The handle created by a call to the create function.
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| 228 | * @param optionName Name of the option.
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| 229 | * @param value The value.
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| 230 | *
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| 231 | * The options that can be set via this API are:
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| 232 | * - @b timeout - the maximum time in milliseconds a communication is
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| 233 | * allowed to use. @p value is a pointer to an @c unsigned @c int with
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| 234 | * the timeout value in milliseconds. This is only supported for the HTTP
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| 235 | * protocol as of now. When the HTTP protocol uses CURL, the meaning of
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| 236 | * the parameter is <em>total request time</em>. When the HTTP protocol uses
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| 237 | * winhttp, the meaning is the same as the @c dwSendTimeout and
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| 238 | * @c dwReceiveTimeout parameters of the
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| 239 | * <a href="https://msdn.microsoft.com/en-us/library/windows/desktop/aa384116(v=vs.85).aspx">
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| 240 | * WinHttpSetTimeouts</a> API.
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| 241 | * - @b CURLOPT_LOW_SPEED_LIMIT - only available for HTTP protocol and only
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| 242 | * when CURL is used. It has the same meaning as CURL's option with the same
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| 243 | * name. @p value is pointer to a long.
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| 244 | * - @b CURLOPT_LOW_SPEED_TIME - only available for HTTP protocol and only
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| 245 | * when CURL is used. It has the same meaning as CURL's option with the same
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| 246 | * name. @p value is pointer to a long.
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| 247 | * - @b CURLOPT_FORBID_REUSE - only available for HTTP protocol and only
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| 248 | * when CURL is used. It has the same meaning as CURL's option with the same
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| 249 | * name. @p value is pointer to a long.
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| 250 | * - @b CURLOPT_FRESH_CONNECT - only available for HTTP protocol and only
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| 251 | * when CURL is used. It has the same meaning as CURL's option with the same
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| 252 | * name. @p value is pointer to a long.
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| 253 | * - @b CURLOPT_VERBOSE - only available for HTTP protocol and only
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| 254 | * when CURL is used. It has the same meaning as CURL's option with the same
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| 255 | * name. @p value is pointer to a long.
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| 256 | * - @b messageTimeout - the maximum time in milliseconds until a message
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| 257 | * is timeouted. The time starts at IoTHubClient_SendEventAsync. By default,
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| 258 | * messages do not expire. @p is a pointer to a uint64_t
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| 259 | * - @b svc2cl_keep_alive_timeout_secs - the AMQP service side keep alive interval in seconds.
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| 260 | * After the connection established the client requests the server to set the
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| 261 | * keep alive interval for given time.
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| 262 | * If it is not set then the default 240 sec applies.
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| 263 | * If it is set to zero the server will not send keep alive messages to the client.
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| 264 | * - @b cl2svc_keep_alive_send_ratio - the AMQP client side keep alive interval in seconds.
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| 265 | * After the connection established the server requests the client to set the
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| 266 | * keep alive interval for given time.
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| 267 | * If it is not set then the default ratio of 1/2 is applied.
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| 268 | * The ratio has to be greater than 0.0 and equal to or less than 0.9
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| 269 |
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| 270 | * @return IOTHUB_CLIENT_OK upon success or an error code upon failure.
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| 271 | */
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| 272 | MOCKABLE_FUNCTION(, IOTHUB_CLIENT_RESULT, IoTHubClient_SetOption, IOTHUB_CLIENT_HANDLE, iotHubClientHandle, const char*, optionName, const void*, value);
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| 273 |
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| 274 | /**
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| 275 | * @brief This API specifies a call back to be used when the device receives a state update.
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| 276 | *
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| 277 | * @param iotHubClientHandle The handle created by a call to the create function.
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| 278 | * @param deviceTwinCallback The callback specified by the device client to be used for updating
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| 279 | * the desired state. The callback will be called in response to a
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| 280 | * request send by the IoTHub services. The payload will be passed to the
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| 281 | * callback, along with two version numbers:
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| 282 | * - Desired:
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| 283 | * - LastSeenReported:
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| 284 | * @param userContextCallback User specified context that will be provided to the
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| 285 | * callback. This can be @c NULL.
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| 286 | *
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| 287 | * @b NOTE: The application behavior is undefined if the user calls
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| 288 | * the ::IoTHubClient_Destroy function from within any callback.
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| 289 | *
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| 290 | * @return IOTHUB_CLIENT_OK upon success or an error code upon failure.
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| 291 | */
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| 292 | MOCKABLE_FUNCTION(, IOTHUB_CLIENT_RESULT, IoTHubClient_SetDeviceTwinCallback, IOTHUB_CLIENT_HANDLE, iotHubClientHandle, IOTHUB_CLIENT_DEVICE_TWIN_CALLBACK, deviceTwinCallback, void*, userContextCallback);
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| 293 |
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| 294 | /**
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| 295 | * @brief This API sends a report of the device's properties and their current values.
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| 296 | *
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| 297 | * @param iotHubClientHandle The handle created by a call to the create function.
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| 298 | * @param reportedState The current device property values to be 'reported' to the IoTHub.
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| 299 | * @param reportedStateCallback The callback specified by the device client to be called with the
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| 300 | * result of the transaction.
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| 301 | * @param userContextCallback User specified context that will be provided to the
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| 302 | * callback. This can be @c NULL.
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| 303 | *
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| 304 | * @b NOTE: The application behavior is undefined if the user calls
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| 305 | * the ::IoTHubClient_Destroy function from within any callback.
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| 306 | *
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| 307 | * @return IOTHUB_CLIENT_OK upon success or an error code upon failure.
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| 308 | */
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| 309 | MOCKABLE_FUNCTION(, IOTHUB_CLIENT_RESULT, IoTHubClient_SendReportedState, IOTHUB_CLIENT_HANDLE, iotHubClientHandle, const unsigned char*, reportedState, size_t, size, IOTHUB_CLIENT_REPORTED_STATE_CALLBACK, reportedStateCallback, void*, userContextCallback);
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| 310 |
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| 311 | /**
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| 312 | * @brief This API sets callback for cloud to device method call.
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| 313 | *
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| 314 | * @param iotHubClientHandle The handle created by a call to the create function.
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| 315 | * @param deviceMethodCallback The callback which will be called by IoTHub.
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| 316 | * @param userContextCallback User specified context that will be provided to the
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| 317 | * callback. This can be @c NULL.
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| 318 | *
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| 319 | * @return IOTHUB_CLIENT_OK upon success or an error code upon failure.
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| 320 | */
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| 321 | MOCKABLE_FUNCTION(, IOTHUB_CLIENT_RESULT, IoTHubClient_SetDeviceMethodCallback, IOTHUB_CLIENT_HANDLE, iotHubClientHandle, IOTHUB_CLIENT_DEVICE_METHOD_CALLBACK_ASYNC, deviceMethodCallback, void*, userContextCallback);
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| 322 |
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| 323 | /**
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| 324 | * @brief This API sets callback for async cloud to device method call.
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| 325 | *
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| 326 | * @param iotHubClientHandle The handle created by a call to the create function.
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| 327 | * @param inboundDeviceMethodCallback The callback which will be called by IoTHub.
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| 328 | * @param userContextCallback User specified context that will be provided to the
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| 329 | * callback. This can be @c NULL.
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| 330 | *
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| 331 | * @return IOTHUB_CLIENT_OK upon success or an error code upon failure.
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| 332 | */
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| 333 | MOCKABLE_FUNCTION(, IOTHUB_CLIENT_RESULT, IoTHubClient_SetDeviceMethodCallback_Ex, IOTHUB_CLIENT_HANDLE, iotHubClientHandle, IOTHUB_CLIENT_INBOUND_DEVICE_METHOD_CALLBACK, inboundDeviceMethodCallback, void*, userContextCallback);
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| 334 |
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| 335 | /**
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| 336 | * @brief This API responses to a asnyc method callback identified the methodId.
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| 337 | *
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| 338 | * @param iotHubClientHandle The handle created by a call to the create function.
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| 339 | * @param methodId The methodId of the Device Method callback.
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| 340 | * @param response The response data for the method callback.
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| 341 | * @param response_size The size of the response data buffer.
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| 342 | * @param status_response The status response of the method callback.
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| 343 | *
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| 344 | * @return IOTHUB_CLIENT_OK upon success or an error code upon failure.
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| 345 | */
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| 346 | MOCKABLE_FUNCTION(, IOTHUB_CLIENT_RESULT, IoTHubClient_DeviceMethodResponse, IOTHUB_CLIENT_HANDLE, iotHubClientHandle, METHOD_HANDLE, methodId, const unsigned char*, response, size_t, response_size, int, statusCode);
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| 347 |
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| 348 | #ifndef DONT_USE_UPLOADTOBLOB
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| 349 | /**
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| 350 | * @brief IoTHubClient_UploadToBlobAsync uploads data from memory to a file in Azure Blob Storage.
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| 351 | *
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| 352 | * @param iotHubClientHandle The handle created by a call to the IoTHubClient_Create function.
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| 353 | * @param destinationFileName The name of the file to be created in Azure Blob Storage.
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| 354 | * @param source The source of data.
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| 355 | * @param size The size of data.
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| 356 | * @param iotHubClientFileUploadCallback A callback to be invoked when the file upload operation has finished.
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| 357 | * @param context A user-provided context to be passed to the file upload callback.
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| 358 | *
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| 359 | * @return IOTHUB_CLIENT_OK upon success or an error code upon failure.
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| 360 | */
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| 361 | MOCKABLE_FUNCTION(, 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);
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| 362 |
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| 363 | /**
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| 364 | ** DEPRECATED: Use IoTHubClient_UploadMultipleBlocksToBlobAsyncEx instead **
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| 365 | * @brief Uploads a file to a Blob storage in chunks, fed through the callback function provided by the user.
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| 366 | * @remarks This function allows users to upload large files in chunks, not requiring the whole file content to be passed in memory.
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| 367 | * @param iotHubClientHandle The handle created by a call to the IoTHubClient_Create function.
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| 368 | * @param destinationFileName The name of the file to be created in Azure Blob Storage.
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| 369 | * @param getDataCallback A callback to be invoked to acquire the file chunks to be uploaded, as well as to indicate the status of the upload of the previous block.
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| 370 | * @param context Any data provided by the user to serve as context on getDataCallback.
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| 371 | * @returns An IOTHUB_CLIENT_RESULT value indicating the success or failure of the API call.
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| 372 | ** DEPRECATED: Use IoTHubClient_UploadMultipleBlocksToBlobAsyncEx instead **
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| 373 | */
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| 374 | MOCKABLE_FUNCTION(, IOTHUB_CLIENT_RESULT, IoTHubClient_UploadMultipleBlocksToBlobAsync, IOTHUB_CLIENT_HANDLE, iotHubClientHandle, const char*, destinationFileName, IOTHUB_CLIENT_FILE_UPLOAD_GET_DATA_CALLBACK, getDataCallback, void*, context);
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| 375 |
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| 376 | /**
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| 377 | * @brief Uploads a file to a Blob storage in chunks, fed through the callback function provided by the user.
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| 378 | * @remarks This function allows users to upload large files in chunks, not requiring the whole file content to be passed in memory.
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| 379 | * @param iotHubClientHandle The handle created by a call to the IoTHubClient_Create function.
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| 380 | * @param destinationFileName The name of the file to be created in Azure Blob Storage.
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| 381 | * @param getDataCallbackEx A callback to be invoked to acquire the file chunks to be uploaded, as well as to indicate the status of the upload of the previous block.
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| 382 | * @param context Any data provided by the user to serve as context on getDataCallback.
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| 383 | * @returns An IOTHUB_CLIENT_RESULT value indicating the success or failure of the API call.*/
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| 384 | MOCKABLE_FUNCTION(, IOTHUB_CLIENT_RESULT, IoTHubClient_UploadMultipleBlocksToBlobAsyncEx, IOTHUB_CLIENT_HANDLE, iotHubClientHandle, const char*, destinationFileName, IOTHUB_CLIENT_FILE_UPLOAD_GET_DATA_CALLBACK_EX, getDataCallbackEx, void*, context);
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| 385 |
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| 386 | #endif /* DONT_USE_UPLOADTOBLOB */
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| 387 |
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| 388 | #ifdef __cplusplus
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| 389 | }
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| 390 | #endif
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| 391 |
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| 392 | #endif /* IOTHUB_CLIENT_H */
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