IoTHub raw messaging client sample using MQTT
Dependencies: EthernetInterface NTPClient mbed-rtos mbed wolfSSL azure_c_shared_utility iothub_client azure_umqtt_c iothub_mqtt_transport
iothub_client_sample_mqtt.c@6:02304619a9fa, 2016-04-24 (annotated)
- Committer:
- AzureIoTClient
- Date:
- Sun Apr 24 16:42:15 2016 -0700
- Revision:
- 6:02304619a9fa
- Parent:
- 2:65c172c36cf5
- Child:
- 7:02bc67ebbe23
1.0.5
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
Azure.IoT Build | 2:65c172c36cf5 | 1 | // Copyright (c) Microsoft. All rights reserved. |
Azure.IoT Build | 2:65c172c36cf5 | 2 | // Licensed under the MIT license. See LICENSE file in the project root for full license information. |
Azure.IoT Build | 2:65c172c36cf5 | 3 | |
Azure.IoT Build | 2:65c172c36cf5 | 4 | #include <stdio.h> |
Azure.IoT Build | 2:65c172c36cf5 | 5 | #include <stdlib.h> |
Azure.IoT Build | 2:65c172c36cf5 | 6 | |
Azure.IoT Build | 2:65c172c36cf5 | 7 | #include "iothub_client.h" |
Azure.IoT Build | 2:65c172c36cf5 | 8 | #include "iothub_message.h" |
AzureIoTClient | 6:02304619a9fa | 9 | #include "azure_c_shared_utility/threadapi.h" |
AzureIoTClient | 6:02304619a9fa | 10 | #include "azure_c_shared_utility/crt_abstractions.h" |
Azure.IoT Build | 2:65c172c36cf5 | 11 | #include "iothubtransportmqtt.h" |
AzureIoTClient | 6:02304619a9fa | 12 | #include "azure_c_shared_utility/platform.h" |
Azure.IoT Build | 2:65c172c36cf5 | 13 | |
Azure.IoT Build | 2:65c172c36cf5 | 14 | #ifdef MBED_BUILD_TIMESTAMP |
Azure.IoT Build | 2:65c172c36cf5 | 15 | #include "certs.h" |
Azure.IoT Build | 2:65c172c36cf5 | 16 | #endif // MBED_BUILD_TIMESTAMP |
Azure.IoT Build | 2:65c172c36cf5 | 17 | |
Azure.IoT Build | 2:65c172c36cf5 | 18 | static const char* connectionString = "[device connection string]"; |
Azure.IoT Build | 2:65c172c36cf5 | 19 | |
Azure.IoT Build | 2:65c172c36cf5 | 20 | static int callbackCounter; |
Azure.IoT Build | 2:65c172c36cf5 | 21 | static char msgText[1024]; |
AzureIoTClient | 6:02304619a9fa | 22 | static char propText[1024]; |
Azure.IoT Build | 2:65c172c36cf5 | 23 | #define MESSAGE_COUNT 5 |
Azure.IoT Build | 2:65c172c36cf5 | 24 | static bool continueRunning; |
Azure.IoT Build | 2:65c172c36cf5 | 25 | |
Azure.IoT Build | 2:65c172c36cf5 | 26 | DEFINE_ENUM_STRINGS(IOTHUB_CLIENT_CONFIRMATION_RESULT, IOTHUB_CLIENT_CONFIRMATION_RESULT_VALUES); |
Azure.IoT Build | 2:65c172c36cf5 | 27 | |
Azure.IoT Build | 2:65c172c36cf5 | 28 | typedef struct EVENT_INSTANCE_TAG |
Azure.IoT Build | 2:65c172c36cf5 | 29 | { |
Azure.IoT Build | 2:65c172c36cf5 | 30 | IOTHUB_MESSAGE_HANDLE messageHandle; |
Azure.IoT Build | 2:65c172c36cf5 | 31 | int messageTrackingId; // For tracking the messages within the user callback. |
Azure.IoT Build | 2:65c172c36cf5 | 32 | } EVENT_INSTANCE; |
Azure.IoT Build | 2:65c172c36cf5 | 33 | |
Azure.IoT Build | 2:65c172c36cf5 | 34 | |
Azure.IoT Build | 2:65c172c36cf5 | 35 | static IOTHUBMESSAGE_DISPOSITION_RESULT ReceiveMessageCallback(IOTHUB_MESSAGE_HANDLE message, void* userContextCallback) |
Azure.IoT Build | 2:65c172c36cf5 | 36 | { |
Azure.IoT Build | 2:65c172c36cf5 | 37 | int* counter = (int*)userContextCallback; |
Azure.IoT Build | 2:65c172c36cf5 | 38 | const char* buffer; |
Azure.IoT Build | 2:65c172c36cf5 | 39 | size_t size; |
Azure.IoT Build | 2:65c172c36cf5 | 40 | if (IoTHubMessage_GetByteArray(message, (const unsigned char**)&buffer, &size) != IOTHUB_MESSAGE_OK) |
Azure.IoT Build | 2:65c172c36cf5 | 41 | { |
Azure.IoT Build | 2:65c172c36cf5 | 42 | (void)printf("unable to retrieve the message data\r\n"); |
Azure.IoT Build | 2:65c172c36cf5 | 43 | } |
Azure.IoT Build | 2:65c172c36cf5 | 44 | else |
Azure.IoT Build | 2:65c172c36cf5 | 45 | { |
Azure.IoT Build | 2:65c172c36cf5 | 46 | (void)printf("Received Message [%d] with Data: <<<%.*s>>> & Size=%d\r\n", *counter, (int)size, buffer, (int)size); |
Azure.IoT Build | 2:65c172c36cf5 | 47 | // If we receive the work 'quit' then we stop running |
Azure.IoT Build | 2:65c172c36cf5 | 48 | if (memcmp(buffer, "quit", size) == 0) |
Azure.IoT Build | 2:65c172c36cf5 | 49 | { |
Azure.IoT Build | 2:65c172c36cf5 | 50 | continueRunning = false; |
Azure.IoT Build | 2:65c172c36cf5 | 51 | } |
Azure.IoT Build | 2:65c172c36cf5 | 52 | } |
Azure.IoT Build | 2:65c172c36cf5 | 53 | |
Azure.IoT Build | 2:65c172c36cf5 | 54 | // Retrieve properties from the message |
Azure.IoT Build | 2:65c172c36cf5 | 55 | MAP_HANDLE mapProperties = IoTHubMessage_Properties(message); |
Azure.IoT Build | 2:65c172c36cf5 | 56 | if (mapProperties != NULL) |
Azure.IoT Build | 2:65c172c36cf5 | 57 | { |
Azure.IoT Build | 2:65c172c36cf5 | 58 | const char*const* keys; |
Azure.IoT Build | 2:65c172c36cf5 | 59 | const char*const* values; |
Azure.IoT Build | 2:65c172c36cf5 | 60 | size_t propertyCount = 0; |
Azure.IoT Build | 2:65c172c36cf5 | 61 | if (Map_GetInternals(mapProperties, &keys, &values, &propertyCount) == MAP_OK) |
Azure.IoT Build | 2:65c172c36cf5 | 62 | { |
Azure.IoT Build | 2:65c172c36cf5 | 63 | if (propertyCount > 0) |
Azure.IoT Build | 2:65c172c36cf5 | 64 | { |
Azure.IoT Build | 2:65c172c36cf5 | 65 | for (size_t index = 0; index < propertyCount; index++) |
Azure.IoT Build | 2:65c172c36cf5 | 66 | { |
Azure.IoT Build | 2:65c172c36cf5 | 67 | (void)printf("\tKey: %s Value: %s\r\n", keys[index], values[index]); |
Azure.IoT Build | 2:65c172c36cf5 | 68 | } |
Azure.IoT Build | 2:65c172c36cf5 | 69 | (void)printf("\r\n"); |
Azure.IoT Build | 2:65c172c36cf5 | 70 | } |
Azure.IoT Build | 2:65c172c36cf5 | 71 | } |
Azure.IoT Build | 2:65c172c36cf5 | 72 | } |
Azure.IoT Build | 2:65c172c36cf5 | 73 | |
Azure.IoT Build | 2:65c172c36cf5 | 74 | /* Some device specific action code goes here... */ |
Azure.IoT Build | 2:65c172c36cf5 | 75 | (*counter)++; |
Azure.IoT Build | 2:65c172c36cf5 | 76 | return IOTHUBMESSAGE_ACCEPTED; |
Azure.IoT Build | 2:65c172c36cf5 | 77 | } |
Azure.IoT Build | 2:65c172c36cf5 | 78 | |
Azure.IoT Build | 2:65c172c36cf5 | 79 | static void SendConfirmationCallback(IOTHUB_CLIENT_CONFIRMATION_RESULT result, void* userContextCallback) |
Azure.IoT Build | 2:65c172c36cf5 | 80 | { |
Azure.IoT Build | 2:65c172c36cf5 | 81 | EVENT_INSTANCE* eventInstance = (EVENT_INSTANCE*)userContextCallback; |
Azure.IoT Build | 2:65c172c36cf5 | 82 | (void)printf("Confirmation[%d] received for message tracking id = %d with result = %s\r\n", callbackCounter, eventInstance->messageTrackingId, ENUM_TO_STRING(IOTHUB_CLIENT_CONFIRMATION_RESULT, result)); |
Azure.IoT Build | 2:65c172c36cf5 | 83 | /* Some device specific action code goes here... */ |
Azure.IoT Build | 2:65c172c36cf5 | 84 | callbackCounter++; |
Azure.IoT Build | 2:65c172c36cf5 | 85 | IoTHubMessage_Destroy(eventInstance->messageHandle); |
Azure.IoT Build | 2:65c172c36cf5 | 86 | } |
Azure.IoT Build | 2:65c172c36cf5 | 87 | |
Azure.IoT Build | 2:65c172c36cf5 | 88 | void iothub_client_sample_mqtt_run(void) |
Azure.IoT Build | 2:65c172c36cf5 | 89 | { |
Azure.IoT Build | 2:65c172c36cf5 | 90 | IOTHUB_CLIENT_LL_HANDLE iotHubClientHandle; |
Azure.IoT Build | 2:65c172c36cf5 | 91 | |
Azure.IoT Build | 2:65c172c36cf5 | 92 | EVENT_INSTANCE messages[MESSAGE_COUNT]; |
Azure.IoT Build | 2:65c172c36cf5 | 93 | |
Azure.IoT Build | 2:65c172c36cf5 | 94 | continueRunning = true; |
Azure.IoT Build | 2:65c172c36cf5 | 95 | srand((unsigned int)time(NULL)); |
Azure.IoT Build | 2:65c172c36cf5 | 96 | double avgWindSpeed = 10.0; |
Azure.IoT Build | 2:65c172c36cf5 | 97 | |
Azure.IoT Build | 2:65c172c36cf5 | 98 | callbackCounter = 0; |
Azure.IoT Build | 2:65c172c36cf5 | 99 | int receiveContext = 0; |
Azure.IoT Build | 2:65c172c36cf5 | 100 | |
Azure.IoT Build | 2:65c172c36cf5 | 101 | if (platform_init() != 0) |
Azure.IoT Build | 2:65c172c36cf5 | 102 | { |
Azure.IoT Build | 2:65c172c36cf5 | 103 | (void)printf("Failed to initialize the platform.\r\n"); |
Azure.IoT Build | 2:65c172c36cf5 | 104 | } |
Azure.IoT Build | 2:65c172c36cf5 | 105 | else |
Azure.IoT Build | 2:65c172c36cf5 | 106 | { |
Azure.IoT Build | 2:65c172c36cf5 | 107 | (void)printf("Starting the IoTHub client sample MQTT...\r\n"); |
Azure.IoT Build | 2:65c172c36cf5 | 108 | |
Azure.IoT Build | 2:65c172c36cf5 | 109 | if ((iotHubClientHandle = IoTHubClient_LL_CreateFromConnectionString(connectionString, MQTT_Protocol)) == NULL) |
Azure.IoT Build | 2:65c172c36cf5 | 110 | { |
Azure.IoT Build | 2:65c172c36cf5 | 111 | (void)printf("ERROR: iotHubClientHandle is NULL!\r\n"); |
Azure.IoT Build | 2:65c172c36cf5 | 112 | } |
Azure.IoT Build | 2:65c172c36cf5 | 113 | else |
Azure.IoT Build | 2:65c172c36cf5 | 114 | { |
Azure.IoT Build | 2:65c172c36cf5 | 115 | bool traceOn = true; |
Azure.IoT Build | 2:65c172c36cf5 | 116 | IoTHubClient_LL_SetOption(iotHubClientHandle, "logtrace", &traceOn); |
Azure.IoT Build | 2:65c172c36cf5 | 117 | |
Azure.IoT Build | 2:65c172c36cf5 | 118 | #ifdef MBED_BUILD_TIMESTAMP |
Azure.IoT Build | 2:65c172c36cf5 | 119 | // For mbed add the certificate information |
Azure.IoT Build | 2:65c172c36cf5 | 120 | if (IoTHubClient_LL_SetOption(iotHubClientHandle, "TrustedCerts", certificates) != IOTHUB_CLIENT_OK) |
Azure.IoT Build | 2:65c172c36cf5 | 121 | { |
Azure.IoT Build | 2:65c172c36cf5 | 122 | printf("failure to set option \"TrustedCerts\"\r\n"); |
Azure.IoT Build | 2:65c172c36cf5 | 123 | } |
Azure.IoT Build | 2:65c172c36cf5 | 124 | #endif // MBED_BUILD_TIMESTAMP |
Azure.IoT Build | 2:65c172c36cf5 | 125 | |
Azure.IoT Build | 2:65c172c36cf5 | 126 | /* Setting Message call back, so we can receive Commands. */ |
Azure.IoT Build | 2:65c172c36cf5 | 127 | if (IoTHubClient_LL_SetMessageCallback(iotHubClientHandle, ReceiveMessageCallback, &receiveContext) != IOTHUB_CLIENT_OK) |
Azure.IoT Build | 2:65c172c36cf5 | 128 | { |
Azure.IoT Build | 2:65c172c36cf5 | 129 | (void)printf("ERROR: IoTHubClient_LL_SetMessageCallback..........FAILED!\r\n"); |
Azure.IoT Build | 2:65c172c36cf5 | 130 | } |
Azure.IoT Build | 2:65c172c36cf5 | 131 | else |
Azure.IoT Build | 2:65c172c36cf5 | 132 | { |
Azure.IoT Build | 2:65c172c36cf5 | 133 | (void)printf("IoTHubClient_LL_SetMessageCallback...successful.\r\n"); |
Azure.IoT Build | 2:65c172c36cf5 | 134 | |
Azure.IoT Build | 2:65c172c36cf5 | 135 | /* Now that we are ready to receive commands, let's send some messages */ |
Azure.IoT Build | 2:65c172c36cf5 | 136 | for (size_t i = 0; i < MESSAGE_COUNT; i++) |
Azure.IoT Build | 2:65c172c36cf5 | 137 | { |
Azure.IoT Build | 2:65c172c36cf5 | 138 | sprintf_s(msgText, sizeof(msgText), "{\"deviceId\":\"myFirstDevice\",\"windSpeed\":%.2f}", avgWindSpeed + (rand() % 4 + 2)); |
Azure.IoT Build | 2:65c172c36cf5 | 139 | if ((messages[i].messageHandle = IoTHubMessage_CreateFromByteArray((const unsigned char*)msgText, strlen(msgText))) == NULL) |
Azure.IoT Build | 2:65c172c36cf5 | 140 | { |
Azure.IoT Build | 2:65c172c36cf5 | 141 | (void)printf("ERROR: iotHubMessageHandle is NULL!\r\n"); |
Azure.IoT Build | 2:65c172c36cf5 | 142 | } |
Azure.IoT Build | 2:65c172c36cf5 | 143 | else |
Azure.IoT Build | 2:65c172c36cf5 | 144 | { |
Azure.IoT Build | 2:65c172c36cf5 | 145 | messages[i].messageTrackingId = i; |
AzureIoTClient | 6:02304619a9fa | 146 | MAP_HANDLE propMap = IoTHubMessage_Properties(messages[i].messageHandle); |
AzureIoTClient | 6:02304619a9fa | 147 | sprintf_s(propText, sizeof(propText), "PropMsg_%d", i); |
AzureIoTClient | 6:02304619a9fa | 148 | if (Map_AddOrUpdate(propMap, "PropName", propText) != MAP_OK) |
AzureIoTClient | 6:02304619a9fa | 149 | { |
AzureIoTClient | 6:02304619a9fa | 150 | (void)printf("ERROR: Map_AddOrUpdate Failed!\r\n"); |
AzureIoTClient | 6:02304619a9fa | 151 | } |
Azure.IoT Build | 2:65c172c36cf5 | 152 | |
Azure.IoT Build | 2:65c172c36cf5 | 153 | if (IoTHubClient_LL_SendEventAsync(iotHubClientHandle, messages[i].messageHandle, SendConfirmationCallback, &messages[i]) != IOTHUB_CLIENT_OK) |
Azure.IoT Build | 2:65c172c36cf5 | 154 | { |
Azure.IoT Build | 2:65c172c36cf5 | 155 | (void)printf("ERROR: IoTHubClient_LL_SendEventAsync..........FAILED!\r\n"); |
Azure.IoT Build | 2:65c172c36cf5 | 156 | } |
Azure.IoT Build | 2:65c172c36cf5 | 157 | else |
Azure.IoT Build | 2:65c172c36cf5 | 158 | { |
Azure.IoT Build | 2:65c172c36cf5 | 159 | (void)printf("IoTHubClient_LL_SendEventAsync accepted message [%d] for transmission to IoT Hub.\r\n", (int)i); |
Azure.IoT Build | 2:65c172c36cf5 | 160 | } |
Azure.IoT Build | 2:65c172c36cf5 | 161 | |
Azure.IoT Build | 2:65c172c36cf5 | 162 | } |
Azure.IoT Build | 2:65c172c36cf5 | 163 | } |
Azure.IoT Build | 2:65c172c36cf5 | 164 | } |
Azure.IoT Build | 2:65c172c36cf5 | 165 | |
Azure.IoT Build | 2:65c172c36cf5 | 166 | /* Wait for Commands. */ |
Azure.IoT Build | 2:65c172c36cf5 | 167 | while (continueRunning) |
Azure.IoT Build | 2:65c172c36cf5 | 168 | { |
Azure.IoT Build | 2:65c172c36cf5 | 169 | IoTHubClient_LL_DoWork(iotHubClientHandle); |
Azure.IoT Build | 2:65c172c36cf5 | 170 | ThreadAPI_Sleep(1); |
Azure.IoT Build | 2:65c172c36cf5 | 171 | } |
Azure.IoT Build | 2:65c172c36cf5 | 172 | IoTHubClient_LL_Destroy(iotHubClientHandle); |
Azure.IoT Build | 2:65c172c36cf5 | 173 | } |
Azure.IoT Build | 2:65c172c36cf5 | 174 | platform_deinit(); |
Azure.IoT Build | 2:65c172c36cf5 | 175 | } |
Azure.IoT Build | 2:65c172c36cf5 | 176 | } |