[388] | 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_message.h
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| 5 | * @brief The @c IoTHub_Message component encapsulates one message that
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| 6 | * can be transferred by an IoT hub client.
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| 7 | */
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| 8 |
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| 9 | #ifndef IOTHUB_MESSAGE_H
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| 10 | #define IOTHUB_MESSAGE_H
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| 11 |
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| 12 | #include "azure_c_shared_utility/macro_utils.h"
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| 13 | #include "azure_c_shared_utility/map.h"
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| 14 | #include "azure_c_shared_utility/umock_c_prod.h"
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| 15 |
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| 16 | #ifdef __cplusplus
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| 17 | #include <cstddef>
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| 18 | extern "C"
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| 19 | {
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| 20 | #else
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| 21 | #include <stddef.h>
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| 22 | #endif
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| 23 |
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| 24 | #define IOTHUB_MESSAGE_RESULT_VALUES \
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| 25 | IOTHUB_MESSAGE_OK, \
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| 26 | IOTHUB_MESSAGE_INVALID_ARG, \
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| 27 | IOTHUB_MESSAGE_INVALID_TYPE, \
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| 28 | IOTHUB_MESSAGE_ERROR \
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| 29 |
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| 30 | /** @brief Enumeration specifying the status of calls to various
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| 31 | * APIs in this module.
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| 32 | */
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| 33 | MU_DEFINE_ENUM(IOTHUB_MESSAGE_RESULT, IOTHUB_MESSAGE_RESULT_VALUES);
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| 34 |
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| 35 | #define IOTHUBMESSAGE_CONTENT_TYPE_VALUES \
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| 36 | IOTHUBMESSAGE_BYTEARRAY, \
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| 37 | IOTHUBMESSAGE_STRING, \
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| 38 | IOTHUBMESSAGE_UNKNOWN \
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| 39 |
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| 40 | /** @brief Enumeration specifying the content type of the a given
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| 41 | * message.
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| 42 | */
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| 43 | MU_DEFINE_ENUM(IOTHUBMESSAGE_CONTENT_TYPE, IOTHUBMESSAGE_CONTENT_TYPE_VALUES);
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| 44 |
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| 45 | typedef struct IOTHUB_MESSAGE_HANDLE_DATA_TAG* IOTHUB_MESSAGE_HANDLE;
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| 46 |
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| 47 | /** @brief diagnostic related data*/
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| 48 | typedef struct IOTHUB_MESSAGE_DIAGNOSTIC_PROPERTY_DATA_TAG
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| 49 | {
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| 50 | char* diagnosticId;
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| 51 | char* diagnosticCreationTimeUtc;
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| 52 | }IOTHUB_MESSAGE_DIAGNOSTIC_PROPERTY_DATA, *IOTHUB_MESSAGE_DIAGNOSTIC_PROPERTY_DATA_HANDLE;
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| 53 |
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| 54 | static const char DIAG_CREATION_TIME_UTC_PROPERTY_NAME[] = "diag_creation_time_utc";
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| 55 |
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| 56 | /**
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| 57 | * @brief Creates a new IoT hub message from a byte array. The type of the
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| 58 | * message will be set to @c IOTHUBMESSAGE_BYTEARRAY.
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| 59 | *
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| 60 | * @param byteArray The byte array from which the message is to be created.
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| 61 | * @param size The size of the byte array.
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| 62 | *
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| 63 | * @return A valid @c IOTHUB_MESSAGE_HANDLE if the message was successfully
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| 64 | * created or @c NULL in case an error occurs.
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| 65 | */
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| 66 | MOCKABLE_FUNCTION(, IOTHUB_MESSAGE_HANDLE, IoTHubMessage_CreateFromByteArray, const unsigned char*, byteArray, size_t, size);
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| 67 |
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| 68 | /**
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| 69 | * @brief Creates a new IoT hub message from a null terminated string. The
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| 70 | * type of the message will be set to @c IOTHUBMESSAGE_STRING.
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| 71 | *
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| 72 | * @param source The null terminated string from which the message is to be
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| 73 | * created.
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| 74 | *
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| 75 | * @return A valid @c IOTHUB_MESSAGE_HANDLE if the message was successfully
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| 76 | * created or @c NULL in case an error occurs.
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| 77 | */
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| 78 | MOCKABLE_FUNCTION(, IOTHUB_MESSAGE_HANDLE, IoTHubMessage_CreateFromString, const char*, source);
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| 79 |
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| 80 | /**
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| 81 | * @brief Creates a new IoT hub message with the content identical to that
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| 82 | * of the @p iotHubMessageHandle parameter.
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| 83 | *
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| 84 | * @param iotHubMessageHandle Handle to the message that is to be cloned.
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| 85 | *
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| 86 | * @return A valid @c IOTHUB_MESSAGE_HANDLE if the message was successfully
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| 87 | * cloned or @c NULL in case an error occurs.
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| 88 | */
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| 89 | MOCKABLE_FUNCTION(, IOTHUB_MESSAGE_HANDLE, IoTHubMessage_Clone, IOTHUB_MESSAGE_HANDLE, iotHubMessageHandle);
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| 90 |
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| 91 | /**
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| 92 | * @brief Fetches a pointer and size for the data associated with the IoT
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| 93 | * hub message handle. If the content type of the message is not
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| 94 | * @c IOTHUBMESSAGE_BYTEARRAY then the function returns
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| 95 | * @c IOTHUB_MESSAGE_INVALID_ARG.
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| 96 | *
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| 97 | * @param iotHubMessageHandle Handle to the message.
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| 98 | * @param buffer Pointer to the memory location where the
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| 99 | * pointer to the buffer will be written.
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| 100 | * @param size The size of the buffer will be written to
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| 101 | * this address.
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| 102 | *
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| 103 | * @return Returns IOTHUB_MESSAGE_OK if the byte array was fetched successfully
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| 104 | * or an error code otherwise.
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| 105 | */
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| 106 | MOCKABLE_FUNCTION(, IOTHUB_MESSAGE_RESULT, IoTHubMessage_GetByteArray, IOTHUB_MESSAGE_HANDLE, iotHubMessageHandle, const unsigned char**, buffer, size_t*, size);
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| 107 |
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| 108 | /**
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| 109 | * @brief Returns the null terminated string stored in the message.
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| 110 | * If the content type of the message is not @c IOTHUBMESSAGE_STRING
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| 111 | * then the function returns @c NULL.
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| 112 | *
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| 113 | * @param iotHubMessageHandle Handle to the message.
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| 114 | *
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| 115 | * @return @c NULL if an error occurs or a pointer to the stored null
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| 116 | * terminated string otherwise.
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| 117 | */
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| 118 | MOCKABLE_FUNCTION(, const char*, IoTHubMessage_GetString, IOTHUB_MESSAGE_HANDLE, iotHubMessageHandle);
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| 119 |
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| 120 | /**
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| 121 | * @brief Returns the content type of the message given by parameter
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| 122 | * @c iotHubMessageHandle.
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| 123 | *
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| 124 | * @param iotHubMessageHandle Handle to the message.
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| 125 | *
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| 126 | * @remarks This function retrieves the standardized type of the payload, which indicates if @c iotHubMessageHandle was created using a String or a Byte Array.
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| 127 | *
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| 128 | * @return An @c IOTHUBMESSAGE_CONTENT_TYPE value.
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| 129 | */
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| 130 | MOCKABLE_FUNCTION(, IOTHUBMESSAGE_CONTENT_TYPE, IoTHubMessage_GetContentType, IOTHUB_MESSAGE_HANDLE, iotHubMessageHandle);
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| 131 |
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| 132 | /**
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| 133 | * @brief Sets the content-type of the message payload, as per supported values on RFC 2046.
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| 134 | *
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| 135 | * @param iotHubMessageHandle Handle to the message.
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| 136 | *
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| 137 | * @param contentType String defining the type of the payload (e.g., text/plain).
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| 138 | *
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| 139 | * @return An @c IOTHUB_MESSAGE_RESULT value.
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| 140 | */
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| 141 | MOCKABLE_FUNCTION(, IOTHUB_MESSAGE_RESULT, IoTHubMessage_SetContentTypeSystemProperty, IOTHUB_MESSAGE_HANDLE, iotHubMessageHandle, const char*, contentType);
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| 142 |
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| 143 | /**
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| 144 | * @brief Returns the content-type of the message payload, if defined.
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| 145 | *
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| 146 | * @param iotHubMessageHandle Handle to the message.
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| 147 | *
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| 148 | * @return A string with the content-type value if defined (or NULL otherwise).
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| 149 | */
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| 150 | MOCKABLE_FUNCTION(, const char*, IoTHubMessage_GetContentTypeSystemProperty, IOTHUB_MESSAGE_HANDLE, iotHubMessageHandle);
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| 151 |
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| 152 | /**
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| 153 | * @brief Sets the content-encoding of the message payload, as per supported values on RFC 2616.
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| 154 | *
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| 155 | * @param iotHubMessageHandle Handle to the message.
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| 156 | *
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| 157 | * @param contentEncoding String defining the encoding of the payload (e.g., utf-8).
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| 158 | *
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| 159 | * @return An @c IOTHUB_MESSAGE_RESULT value.
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| 160 | */
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| 161 | MOCKABLE_FUNCTION(, IOTHUB_MESSAGE_RESULT, IoTHubMessage_SetContentEncodingSystemProperty, IOTHUB_MESSAGE_HANDLE, iotHubMessageHandle, const char*, contentEncoding);
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| 162 |
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| 163 | /**
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| 164 | * @brief Returns the content-encoding of the message payload, if defined.
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| 165 | *
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| 166 | * @param iotHubMessageHandle Handle to the message.
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| 167 | *
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| 168 | * @return A string with the content-encoding value if defined (or NULL otherwise).
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| 169 | */
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| 170 | MOCKABLE_FUNCTION(, const char*, IoTHubMessage_GetContentEncodingSystemProperty, IOTHUB_MESSAGE_HANDLE, iotHubMessageHandle);
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| 171 |
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| 172 | /**
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| 173 | ** DEPRECATED: Use IoTHubMessage_SetProperty and IoTHubMessage_GetProperty instead. **
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| 174 | * @brief Gets a handle to the message's properties map.
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| 175 | * Note that when sending messages via the HTTP transport, the key names in the map must not contain spaces.
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| 176 | *
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| 177 | * @param iotHubMessageHandle Handle to the message.
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| 178 | *
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| 179 | * @return A @c MAP_HANDLE pointing to the properties map for this message.
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| 180 | */
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| 181 | MOCKABLE_FUNCTION(, MAP_HANDLE, IoTHubMessage_Properties, IOTHUB_MESSAGE_HANDLE, iotHubMessageHandle);
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| 182 |
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| 183 | /**
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| 184 | * @brief Sets a property on a Iothub Message.
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| 185 | *
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| 186 | * @param iotHubMessageHandle Handle to the message.
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| 187 | *
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| 188 | * @param key name of the property to set. Note that when sending messages via the HTTP transport, this value must not contain spaces.
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| 189 | *
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| 190 | * @param value of the property to set.
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| 191 | *
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| 192 | * @return An @c IOTHUB_MESSAGE_RESULT value indicating the result of setting the property.
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| 193 | */
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| 194 | MOCKABLE_FUNCTION(, IOTHUB_MESSAGE_RESULT, IoTHubMessage_SetProperty, IOTHUB_MESSAGE_HANDLE, iotHubMessageHandle, const char*, key, const char*, value);
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| 195 |
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| 196 | /**
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| 197 | * @brief Gets a IotHub Message's properties item.
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| 198 | *
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| 199 | * @param iotHubMessageHandle Handle to the message.
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| 200 | *
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| 201 | * @param key name of the property to retrieve.
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| 202 | *
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| 203 | * @return A string with the property's value, or NULL if it does not exist in the properties list.
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| 204 | */
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| 205 | MOCKABLE_FUNCTION(, const char*, IoTHubMessage_GetProperty, IOTHUB_MESSAGE_HANDLE, iotHubMessageHandle, const char*, key);
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| 206 |
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| 207 | /**
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| 208 | * @brief Gets the MessageId from the IOTHUB_MESSAGE_HANDLE.
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| 209 | *
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| 210 | * @param iotHubMessageHandle Handle to the message.
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| 211 | *
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| 212 | * @return A const char* pointing to the Message Id.
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| 213 | */
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| 214 | MOCKABLE_FUNCTION(, const char*, IoTHubMessage_GetMessageId, IOTHUB_MESSAGE_HANDLE, iotHubMessageHandle);
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| 215 |
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| 216 | /**
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| 217 | * @brief Sets the MessageId for the IOTHUB_MESSAGE_HANDLE.
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| 218 | *
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| 219 | * @param iotHubMessageHandle Handle to the message.
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| 220 | * @param messageId Pointer to the memory location of the messageId
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| 221 | *
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| 222 | * @return Returns IOTHUB_MESSAGE_OK if the messageId was set successfully
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| 223 | * or an error code otherwise.
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| 224 | */
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| 225 | MOCKABLE_FUNCTION(, IOTHUB_MESSAGE_RESULT, IoTHubMessage_SetMessageId, IOTHUB_MESSAGE_HANDLE, iotHubMessageHandle, const char*, messageId);
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| 226 |
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| 227 | /**
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| 228 | * @brief Gets the CorrelationId from the IOTHUB_MESSAGE_HANDLE.
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| 229 | *
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| 230 | * @param iotHubMessageHandle Handle to the message.
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| 231 | *
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| 232 | * @return A const char* pointing to the Correlation Id.
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| 233 | */
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| 234 | MOCKABLE_FUNCTION(, const char*, IoTHubMessage_GetCorrelationId, IOTHUB_MESSAGE_HANDLE, iotHubMessageHandle);
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| 235 |
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| 236 | /**
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| 237 | * @brief Sets the CorrelationId for the IOTHUB_MESSAGE_HANDLE.
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| 238 | *
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| 239 | * @param iotHubMessageHandle Handle to the message.
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| 240 | * @param correlationId Pointer to the memory location of the messageId
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| 241 | *
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| 242 | * @return Returns IOTHUB_MESSAGE_OK if the messageId was set successfully
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| 243 | * or an error code otherwise.
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| 244 | */
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| 245 | MOCKABLE_FUNCTION(, IOTHUB_MESSAGE_RESULT, IoTHubMessage_SetCorrelationId, IOTHUB_MESSAGE_HANDLE, iotHubMessageHandle, const char*, correlationId);
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| 246 |
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| 247 | /**
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| 248 | * @brief Gets the DiagnosticData from the IOTHUB_MESSAGE_HANDLE. CAUTION: SDK user should not call it directly, it is for internal use only.
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| 249 | *
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| 250 | * @param iotHubMessageHandle Handle to the message.
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| 251 | *
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| 252 | * @return A const IOTHUB_MESSAGE_DIAGNOSTIC_PROPERTY_DATA* pointing to the diagnostic property data.
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| 253 | */
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| 254 | MOCKABLE_FUNCTION(, const IOTHUB_MESSAGE_DIAGNOSTIC_PROPERTY_DATA*, IoTHubMessage_GetDiagnosticPropertyData, IOTHUB_MESSAGE_HANDLE, iotHubMessageHandle);
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| 255 |
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| 256 | /**
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| 257 | * @brief Sets the DiagnosticData for the IOTHUB_MESSAGE_HANDLE. CAUTION: SDK user should not call it directly, it is for internal use only.
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| 258 | *
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| 259 | * @param iotHubMessageHandle Handle to the message.
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| 260 | * @param diagnosticData Pointer to the memory location of the diagnosticData
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| 261 | *
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| 262 | * @return Returns IOTHUB_MESSAGE_OK if the DiagnosticData was set successfully
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| 263 | * or an error code otherwise.
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| 264 | */
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| 265 | MOCKABLE_FUNCTION(, IOTHUB_MESSAGE_RESULT, IoTHubMessage_SetDiagnosticPropertyData, IOTHUB_MESSAGE_HANDLE, iotHubMessageHandle, const IOTHUB_MESSAGE_DIAGNOSTIC_PROPERTY_DATA*, diagnosticData);
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| 266 |
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| 267 | /**
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| 268 | * @brief Gets the output name from the IOTHUB_MESSAGE_HANDLE.
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| 269 | *
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| 270 | * @param iotHubMessageHandle Handle to the message.
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| 271 | *
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| 272 | * @return A const char* pointing to the Output Id.
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| 273 | */
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| 274 | MOCKABLE_FUNCTION(, const char*, IoTHubMessage_GetOutputName, IOTHUB_MESSAGE_HANDLE, iotHubMessageHandle);
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| 275 |
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| 276 |
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| 277 | /**
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| 278 | * @brief Sets output for named queues. CAUTION: SDK user should not call it directly, it is for internal use only.
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| 279 | *
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| 280 | * @param iotHubMessageHandle Handle to the message.
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| 281 | * @param outputName Pointer to the queue to output message to
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| 282 | *
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| 283 | * @return Returns IOTHUB_MESSAGE_OK if the DiagnosticData was set successfully
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| 284 | * or an error code otherwise.
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| 285 | */
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| 286 | MOCKABLE_FUNCTION(, IOTHUB_MESSAGE_RESULT, IoTHubMessage_SetOutputName, IOTHUB_MESSAGE_HANDLE, iotHubMessageHandle, const char*, outputName);
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| 287 |
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| 288 |
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| 289 | /**
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| 290 | * @brief Gets the input name from the IOTHUB_MESSAGE_HANDLE.
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| 291 | *
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| 292 | * @param iotHubMessageHandle Handle to the message.
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| 293 | *
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| 294 | * @return A const char* pointing to the Input Id.
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| 295 | */
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| 296 | MOCKABLE_FUNCTION(, const char*, IoTHubMessage_GetInputName, IOTHUB_MESSAGE_HANDLE, iotHubMessageHandle);
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| 297 |
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| 298 | /**
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| 299 | * @brief Sets input for named queues. CAUTION: SDK user should not call it directly, it is for internal use only.
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| 300 | *
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| 301 | * @param iotHubMessageHandle Handle to the message.
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| 302 | * @param inputName Pointer to the queue to input message to
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| 303 | *
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| 304 | * @return Returns IOTHUB_MESSAGE_OK if the DiagnosticData was set successfully
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| 305 | * or an error code otherwise.
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| 306 | */
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| 307 | MOCKABLE_FUNCTION(, IOTHUB_MESSAGE_RESULT, IoTHubMessage_SetInputName, IOTHUB_MESSAGE_HANDLE, iotHubMessageHandle, const char*, inputName);
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| 308 |
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| 309 | /**
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| 310 | * @brief Gets the module name from the IOTHUB_MESSAGE_HANDLE.
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| 311 | *
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| 312 | * @param iotHubMessageHandle Handle to the message.
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| 313 | *
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| 314 | * @return A const char* pointing to the connection module Id.
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| 315 | */
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| 316 | MOCKABLE_FUNCTION(, const char*, IoTHubMessage_GetConnectionModuleId, IOTHUB_MESSAGE_HANDLE, iotHubMessageHandle);
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| 317 |
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| 318 | /**
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| 319 | * @brief Sets connection module ID. CAUTION: SDK user should not call it directly, it is for internal use only.
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| 320 | *
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| 321 | * @param iotHubMessageHandle Handle to the message.
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| 322 | * @param connectionModuleId Pointer to the module ID of connector
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| 323 | *
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| 324 | * @return Returns IOTHUB_MESSAGE_OK if the DiagnosticData was set successfully
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| 325 | * or an error code otherwise.
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| 326 | */
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| 327 | MOCKABLE_FUNCTION(, IOTHUB_MESSAGE_RESULT, IoTHubMessage_SetConnectionModuleId, IOTHUB_MESSAGE_HANDLE, iotHubMessageHandle, const char*, connectionModuleId);
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| 328 |
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| 329 |
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| 330 | /**
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| 331 | * @brief Gets the connection device ID from the IOTHUB_MESSAGE_HANDLE.
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| 332 | *
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| 333 | * @param iotHubMessageHandle Handle to the message.
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| 334 | *
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| 335 | * @return A const char* pointing to the connection device Id.
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| 336 | */
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| 337 | MOCKABLE_FUNCTION(, const char*, IoTHubMessage_GetConnectionDeviceId, IOTHUB_MESSAGE_HANDLE, iotHubMessageHandle);
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| 338 |
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| 339 | /**
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| 340 | * @brief Sets connection device Id. CAUTION: SDK user should not call it directly, it is for internal use only.
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| 341 | *
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| 342 | * @param iotHubMessageHandle Handle to the message.
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| 343 | * @param connectionDeviceId Pointer to the device ID of connector
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| 344 | *
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| 345 | * @return Returns IOTHUB_MESSAGE_OK if the DiagnosticData was set successfully
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| 346 | * or an error code otherwise.
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| 347 | */
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| 348 | MOCKABLE_FUNCTION(, IOTHUB_MESSAGE_RESULT, IoTHubMessage_SetConnectionDeviceId, IOTHUB_MESSAGE_HANDLE, iotHubMessageHandle, const char*, connectionDeviceId);
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| 349 |
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| 350 |
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| 351 | /**
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| 352 | * @brief Frees all resources associated with the given message handle.
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| 353 | *
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| 354 | * @param iotHubMessageHandle Handle to the message.
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| 355 | */
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| 356 | MOCKABLE_FUNCTION(, void, IoTHubMessage_Destroy, IOTHUB_MESSAGE_HANDLE, iotHubMessageHandle);
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| 357 |
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| 358 | #ifdef __cplusplus
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| 359 | }
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| 360 | #endif
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| 361 |
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| 362 | #endif /* IOTHUB_MESSAGE_H */
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