Azure IoT / Mbed 2 deprecated iothub_client_sample_amqp

IoTHub raw messaging client sample using AMQP

Dependencies:   iothub_client EthernetInterface NTPClient iothub_amqp_transport azure_c_shared_utility mbed-rtos mbed azure_uamqp_c wolfSSL

This sample showcases the usage of Azure IoT client libraries with the AMQP transport for sending/receiving raw messages from an IoT Hub.

iothub_client_sample_amqp.c@43:a4b2614eb860, 2016-06-17 (annotated)

Committer:
AzureIoTClient
Date:
Fri Jun 17 17:03:45 2016 -0700
Revision:
43:a4b2614eb860
Parent:
40:548ef685e177
Child:
47:d87920c7f211
1.0.9

Who changed what in which revision?

UserRevisionLine numberNew contents of line
AzureIoTClient 17:d01a2794d5d7 1 // Copyright (c) Microsoft. All rights reserved.
AzureIoTClient 17:d01a2794d5d7 2 // Licensed under the MIT license. See LICENSE file in the project root for full license information.
AzureIoTClient 17:d01a2794d5d7 3
AzureIoTClient 17:d01a2794d5d7 4 #include <stdio.h>
AzureIoTClient 17:d01a2794d5d7 5 #include <stdlib.h>
AzureIoTClient 17:d01a2794d5d7 6
AzureIoTClient 39:87752a84df87 7 #include "azure_c_shared_utility/platform.h"
AzureIoTClient 17:d01a2794d5d7 8 #include "iothub_client.h"
AzureIoTClient 17:d01a2794d5d7 9 #include "iothub_message.h"
AzureIoTClient 39:87752a84df87 10 #include "azure_c_shared_utility/threadapi.h"
AzureIoTClient 39:87752a84df87 11 #include "azure_c_shared_utility/crt_abstractions.h"
AzureIoTClient 17:d01a2794d5d7 12 #include "iothubtransportamqp.h"
AzureIoTClient 17:d01a2794d5d7 13
AzureIoTClient 17:d01a2794d5d7 14 #ifdef MBED_BUILD_TIMESTAMP
AzureIoTClient 17:d01a2794d5d7 15 #include "certs.h"
AzureIoTClient 17:d01a2794d5d7 16 #endif // MBED_BUILD_TIMESTAMP
AzureIoTClient 17:d01a2794d5d7 17
AzureIoTClient 40:548ef685e177 18 /*String containing Hostname, Device Id & Device Key in the format: */
AzureIoTClient 40:548ef685e177 19 /* "HostName=<host_name>;DeviceId=<device_id>;SharedAccessKey=<device_key>" */
AzureIoTClient 40:548ef685e177 20 /* "HostName=<host_name>;DeviceId=<device_id>;SharedAccessSignature=<device_sas_token>" */
AzureIoTClient 28:a1105bba4bb1 21 static const char* connectionString = "[device connection string]";
AzureIoTClient 40:548ef685e177 22
AzureIoTClient 17:d01a2794d5d7 23 static int callbackCounter;
AzureIoTClient 43:a4b2614eb860 24 static bool g_continueRunning;
AzureIoTClient 43:a4b2614eb860 25 #define MESSAGE_COUNT 5
AzureIoTClient 17:d01a2794d5d7 26
AzureIoTClient 17:d01a2794d5d7 27 DEFINE_ENUM_STRINGS(IOTHUB_CLIENT_CONFIRMATION_RESULT, IOTHUB_CLIENT_CONFIRMATION_RESULT_VALUES);
AzureIoTClient 17:d01a2794d5d7 28
AzureIoTClient 17:d01a2794d5d7 29 typedef struct EVENT_INSTANCE_TAG
AzureIoTClient 17:d01a2794d5d7 30 {
AzureIoTClient 17:d01a2794d5d7 31 IOTHUB_MESSAGE_HANDLE messageHandle;
AzureIoTClient 17:d01a2794d5d7 32 int messageTrackingId; // For tracking the messages within the user callback.
AzureIoTClient 17:d01a2794d5d7 33 } EVENT_INSTANCE;
AzureIoTClient 17:d01a2794d5d7 34
AzureIoTClient 17:d01a2794d5d7 35 static IOTHUBMESSAGE_DISPOSITION_RESULT ReceiveMessageCallback(IOTHUB_MESSAGE_HANDLE message, void* userContextCallback)
AzureIoTClient 17:d01a2794d5d7 36 {
AzureIoTClient 17:d01a2794d5d7 37 int* counter = (int*)userContextCallback;
Azure.IoT Build 31:7a8aed41e109 38 const unsigned char* buffer = NULL;
Azure.IoT Build 31:7a8aed41e109 39 size_t size = 0;
AzureIoTClient 43:a4b2614eb860 40 const char* messageId;
AzureIoTClient 43:a4b2614eb860 41 const char* correlationId;
AzureIoTClient 40:548ef685e177 42
AzureIoTClient 43:a4b2614eb860 43 // AMQP message properties
AzureIoTClient 43:a4b2614eb860 44 if ((messageId = IoTHubMessage_GetMessageId(message)) == NULL)
AzureIoTClient 43:a4b2614eb860 45 {
AzureIoTClient 43:a4b2614eb860 46 messageId = "<null>";
AzureIoTClient 43:a4b2614eb860 47 }
AzureIoTClient 40:548ef685e177 48
AzureIoTClient 43:a4b2614eb860 49 if ((correlationId = IoTHubMessage_GetCorrelationId(message)) == NULL)
AzureIoTClient 43:a4b2614eb860 50 {
AzureIoTClient 43:a4b2614eb860 51 correlationId = "<null>";
AzureIoTClient 43:a4b2614eb860 52 }
AzureIoTClient 40:548ef685e177 53
AzureIoTClient 43:a4b2614eb860 54 // AMQP message content.
Azure.IoT Build 31:7a8aed41e109 55 IOTHUBMESSAGE_CONTENT_TYPE contentType = IoTHubMessage_GetContentType(message);
AzureIoTClient 19:de28463ff3cc 56
Azure.IoT Build 31:7a8aed41e109 57 if (contentType == IOTHUBMESSAGE_BYTEARRAY)
Azure.IoT Build 31:7a8aed41e109 58 {
Azure.IoT Build 31:7a8aed41e109 59 if (IoTHubMessage_GetByteArray(message, &buffer, &size) == IOTHUB_MESSAGE_OK)
Azure.IoT Build 31:7a8aed41e109 60 {
AzureIoTClient 40:548ef685e177 61 (void)printf("Received Message [%d] (message-id: %s, correlation-id: %s) with BINARY Data: <<<%.*s>>> & Size=%d\r\n", *counter, messageId, correlationId,(int)size, buffer, (int)size);
Azure.IoT Build 31:7a8aed41e109 62 }
Azure.IoT Build 31:7a8aed41e109 63 else
Azure.IoT Build 31:7a8aed41e109 64 {
Azure.IoT Build 31:7a8aed41e109 65 (void)printf("Failed getting the BINARY body of the message received.\r\n");
Azure.IoT Build 31:7a8aed41e109 66 }
Azure.IoT Build 31:7a8aed41e109 67 }
Azure.IoT Build 31:7a8aed41e109 68 else if (contentType == IOTHUBMESSAGE_STRING)
AzureIoTClient 17:d01a2794d5d7 69 {
Azure.IoT Build 31:7a8aed41e109 70 if ((buffer = IoTHubMessage_GetString(message)) != NULL && (size = strlen(buffer)) > 0)
Azure.IoT Build 31:7a8aed41e109 71 {
AzureIoTClient 40:548ef685e177 72 (void)printf("Received Message [%d] (message-id: %s, correlation-id: %s) with STRING Data: <<<%.*s>>> & Size=%d\r\n", *counter, messageId, correlationId, (int)size, buffer, (int)size);
AzureIoTClient 43:a4b2614eb860 73
AzureIoTClient 43:a4b2614eb860 74 // If we receive the work 'quit' then we stop running
Azure.IoT Build 31:7a8aed41e109 75 }
Azure.IoT Build 31:7a8aed41e109 76 else
Azure.IoT Build 31:7a8aed41e109 77 {
Azure.IoT Build 31:7a8aed41e109 78 (void)printf("Failed getting the STRING body of the message received.\r\n");
Azure.IoT Build 31:7a8aed41e109 79 }
Azure.IoT Build 31:7a8aed41e109 80 }
Azure.IoT Build 31:7a8aed41e109 81 else
Azure.IoT Build 31:7a8aed41e109 82 {
Azure.IoT Build 31:7a8aed41e109 83 (void)printf("Failed getting the body of the message received (type %i).\r\n", contentType);
AzureIoTClient 17:d01a2794d5d7 84 }
AzureIoTClient 17:d01a2794d5d7 85
AzureIoTClient 17:d01a2794d5d7 86 // Retrieve properties from the message
AzureIoTClient 17:d01a2794d5d7 87 MAP_HANDLE mapProperties = IoTHubMessage_Properties(message);
AzureIoTClient 17:d01a2794d5d7 88 if (mapProperties != NULL)
AzureIoTClient 17:d01a2794d5d7 89 {
AzureIoTClient 17:d01a2794d5d7 90 const char*const* keys;
AzureIoTClient 17:d01a2794d5d7 91 const char*const* values;
AzureIoTClient 17:d01a2794d5d7 92 size_t propertyCount = 0;
AzureIoTClient 17:d01a2794d5d7 93 if (Map_GetInternals(mapProperties, &keys, &values, &propertyCount) == MAP_OK)
AzureIoTClient 17:d01a2794d5d7 94 {
AzureIoTClient 17:d01a2794d5d7 95 if (propertyCount > 0)
AzureIoTClient 17:d01a2794d5d7 96 {
Azure.IoT Build 31:7a8aed41e109 97 size_t index;
Azure.IoT Build 31:7a8aed41e109 98
AzureIoTClient 17:d01a2794d5d7 99 printf("Message Properties:\r\n");
Azure.IoT Build 31:7a8aed41e109 100 for (index = 0; index < propertyCount; index++)
AzureIoTClient 17:d01a2794d5d7 101 {
AzureIoTClient 17:d01a2794d5d7 102 printf("\tKey: %s Value: %s\r\n", keys[index], values[index]);
AzureIoTClient 17:d01a2794d5d7 103 }
AzureIoTClient 17:d01a2794d5d7 104 printf("\r\n");
AzureIoTClient 17:d01a2794d5d7 105 }
AzureIoTClient 17:d01a2794d5d7 106 }
AzureIoTClient 17:d01a2794d5d7 107 }
AzureIoTClient 17:d01a2794d5d7 108
AzureIoTClient 43:a4b2614eb860 109 if (memcmp(buffer, "quit", size) == 0)
AzureIoTClient 43:a4b2614eb860 110 {
AzureIoTClient 43:a4b2614eb860 111 g_continueRunning = false;
AzureIoTClient 43:a4b2614eb860 112 }
AzureIoTClient 43:a4b2614eb860 113
AzureIoTClient 17:d01a2794d5d7 114 /* Some device specific action code goes here... */
AzureIoTClient 17:d01a2794d5d7 115 (*counter)++;
AzureIoTClient 17:d01a2794d5d7 116 return IOTHUBMESSAGE_ACCEPTED;
AzureIoTClient 17:d01a2794d5d7 117 }
AzureIoTClient 17:d01a2794d5d7 118
AzureIoTClient 17:d01a2794d5d7 119 static void SendConfirmationCallback(IOTHUB_CLIENT_CONFIRMATION_RESULT result, void* userContextCallback)
AzureIoTClient 17:d01a2794d5d7 120 {
AzureIoTClient 17:d01a2794d5d7 121 EVENT_INSTANCE* eventInstance = (EVENT_INSTANCE*)userContextCallback;
AzureIoTClient 17:d01a2794d5d7 122 (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));
AzureIoTClient 17:d01a2794d5d7 123 /* Some device specific action code goes here... */
AzureIoTClient 17:d01a2794d5d7 124 callbackCounter++;
AzureIoTClient 17:d01a2794d5d7 125 IoTHubMessage_Destroy(eventInstance->messageHandle);
AzureIoTClient 17:d01a2794d5d7 126 }
AzureIoTClient 17:d01a2794d5d7 127
AzureIoTClient 17:d01a2794d5d7 128 static char msgText[1024];
AzureIoTClient 17:d01a2794d5d7 129 static char propText[1024];
AzureIoTClient 17:d01a2794d5d7 130 #define MESSAGE_COUNT 5
AzureIoTClient 17:d01a2794d5d7 131
AzureIoTClient 17:d01a2794d5d7 132 void iothub_client_sample_amqp_run(void)
Azure.IoT Build 31:7a8aed41e109 133 {
AzureIoTClient 43:a4b2614eb860 134 IOTHUB_CLIENT_LL_HANDLE iotHubClientHandle;
AzureIoTClient 17:d01a2794d5d7 135
AzureIoTClient 17:d01a2794d5d7 136 EVENT_INSTANCE messages[MESSAGE_COUNT];
AzureIoTClient 17:d01a2794d5d7 137
AzureIoTClient 43:a4b2614eb860 138 g_continueRunning = true;
AzureIoTClient 17:d01a2794d5d7 139 srand((unsigned int)time(NULL));
AzureIoTClient 17:d01a2794d5d7 140 double avgWindSpeed = 10.0;
AzureIoTClient 17:d01a2794d5d7 141
AzureIoTClient 17:d01a2794d5d7 142 callbackCounter = 0;
AzureIoTClient 17:d01a2794d5d7 143 int receiveContext = 0;
AzureIoTClient 17:d01a2794d5d7 144
AzureIoTClient 17:d01a2794d5d7 145 (void)printf("Starting the IoTHub client sample AMQP...\r\n");
Azure.IoT Build 34:b7f31511a8ad 146
Azure.IoT Build 34:b7f31511a8ad 147 if (platform_init() != 0)
AzureIoTClient 17:d01a2794d5d7 148 {
Azure.IoT Build 34:b7f31511a8ad 149 printf("Failed to initialize the platform.\r\n");
AzureIoTClient 17:d01a2794d5d7 150 }
AzureIoTClient 17:d01a2794d5d7 151 else
AzureIoTClient 17:d01a2794d5d7 152 {
AzureIoTClient 43:a4b2614eb860 153 if ((iotHubClientHandle = IoTHubClient_LL_CreateFromConnectionString(connectionString, AMQP_Protocol)) == NULL)
AzureIoTClient 17:d01a2794d5d7 154 {
Azure.IoT Build 34:b7f31511a8ad 155 (void)printf("ERROR: iotHubClientHandle is NULL!\r\n");
AzureIoTClient 17:d01a2794d5d7 156 }
AzureIoTClient 17:d01a2794d5d7 157 else
AzureIoTClient 17:d01a2794d5d7 158 {
AzureIoTClient 43:a4b2614eb860 159 bool traceOn = true;
AzureIoTClient 43:a4b2614eb860 160 IoTHubClient_LL_SetOption(iotHubClientHandle, "logtrace", &traceOn);
AzureIoTClient 17:d01a2794d5d7 161
Azure.IoT Build 34:b7f31511a8ad 162 #ifdef MBED_BUILD_TIMESTAMP
Azure.IoT Build 34:b7f31511a8ad 163 // For mbed add the certificate information
AzureIoTClient 43:a4b2614eb860 164 if (IoTHubClient_LL_SetOption(iotHubClientHandle, "TrustedCerts", certificates) != IOTHUB_CLIENT_OK)
AzureIoTClient 17:d01a2794d5d7 165 {
Azure.IoT Build 34:b7f31511a8ad 166 printf("failure to set option \"TrustedCerts\"\r\n");
Azure.IoT Build 34:b7f31511a8ad 167 }
Azure.IoT Build 34:b7f31511a8ad 168 #endif // MBED_BUILD_TIMESTAMP
Azure.IoT Build 34:b7f31511a8ad 169
Azure.IoT Build 34:b7f31511a8ad 170 /* Setting Message call back, so we can receive Commands. */
AzureIoTClient 43:a4b2614eb860 171 if (IoTHubClient_LL_SetMessageCallback(iotHubClientHandle, ReceiveMessageCallback, &receiveContext) != IOTHUB_CLIENT_OK)
Azure.IoT Build 34:b7f31511a8ad 172 {
Azure.IoT Build 34:b7f31511a8ad 173 (void)printf("ERROR: IoTHubClient_SetMessageCallback..........FAILED!\r\n");
Azure.IoT Build 34:b7f31511a8ad 174 }
Azure.IoT Build 34:b7f31511a8ad 175 else
Azure.IoT Build 34:b7f31511a8ad 176 {
Azure.IoT Build 34:b7f31511a8ad 177 (void)printf("IoTHubClient_SetMessageCallback...successful.\r\n");
Azure.IoT Build 34:b7f31511a8ad 178
Azure.IoT Build 34:b7f31511a8ad 179 /* Now that we are ready to receive commands, let's send some messages */
AzureIoTClient 43:a4b2614eb860 180 size_t iterator = 0;
AzureIoTClient 43:a4b2614eb860 181 do
AzureIoTClient 17:d01a2794d5d7 182 {
AzureIoTClient 43:a4b2614eb860 183 if (iterator < MESSAGE_COUNT)
AzureIoTClient 17:d01a2794d5d7 184 {
AzureIoTClient 43:a4b2614eb860 185 sprintf_s(msgText, sizeof(msgText), "{\"deviceId\":\"myFirstDevice\",\"windSpeed\":%.2f}", avgWindSpeed + (rand() % 4 + 2));
AzureIoTClient 43:a4b2614eb860 186 if ((messages[iterator].messageHandle = IoTHubMessage_CreateFromByteArray((const unsigned char*)msgText, strlen(msgText))) == NULL)
Azure.IoT Build 34:b7f31511a8ad 187 {
AzureIoTClient 43:a4b2614eb860 188 (void)printf("ERROR: iotHubMessageHandle is NULL!\r\n");
Azure.IoT Build 34:b7f31511a8ad 189 }
Azure.IoT Build 34:b7f31511a8ad 190 else
Azure.IoT Build 34:b7f31511a8ad 191 {
AzureIoTClient 43:a4b2614eb860 192 messages[iterator].messageTrackingId = iterator;
AzureIoTClient 43:a4b2614eb860 193
AzureIoTClient 43:a4b2614eb860 194 MAP_HANDLE propMap = IoTHubMessage_Properties(messages[iterator].messageHandle);
AzureIoTClient 43:a4b2614eb860 195 sprintf_s(propText, sizeof(propText), "PropMsg_%d", iterator);
AzureIoTClient 43:a4b2614eb860 196 if (Map_AddOrUpdate(propMap, "PropName", propText) != MAP_OK)
AzureIoTClient 43:a4b2614eb860 197 {
AzureIoTClient 43:a4b2614eb860 198 (void)printf("ERROR: Map_AddOrUpdate Failed!\r\n");
AzureIoTClient 43:a4b2614eb860 199 }
AzureIoTClient 43:a4b2614eb860 200
AzureIoTClient 43:a4b2614eb860 201 if (IoTHubClient_LL_SendEventAsync(iotHubClientHandle, messages[iterator].messageHandle, SendConfirmationCallback, &messages[iterator]) != IOTHUB_CLIENT_OK)
AzureIoTClient 43:a4b2614eb860 202 {
AzureIoTClient 43:a4b2614eb860 203 (void)printf("ERROR: IoTHubClient_SendEventAsync..........FAILED!\r\n");
AzureIoTClient 43:a4b2614eb860 204 }
AzureIoTClient 43:a4b2614eb860 205 else
AzureIoTClient 43:a4b2614eb860 206 {
AzureIoTClient 43:a4b2614eb860 207 (void)printf("IoTHubClient_SendEventAsync accepted data for transmission to IoT Hub.\r\n");
AzureIoTClient 43:a4b2614eb860 208 }
Azure.IoT Build 34:b7f31511a8ad 209 }
AzureIoTClient 17:d01a2794d5d7 210 }
AzureIoTClient 43:a4b2614eb860 211 IoTHubClient_LL_DoWork(iotHubClientHandle);
AzureIoTClient 43:a4b2614eb860 212 ThreadAPI_Sleep(1);
Azure.IoT Build 34:b7f31511a8ad 213
AzureIoTClient 43:a4b2614eb860 214 iterator++;
AzureIoTClient 43:a4b2614eb860 215 } while (g_continueRunning);
AzureIoTClient 17:d01a2794d5d7 216 }
AzureIoTClient 43:a4b2614eb860 217 IoTHubClient_LL_Destroy(iotHubClientHandle);
AzureIoTClient 17:d01a2794d5d7 218 }
Azure.IoT Build 34:b7f31511a8ad 219 platform_deinit();
AzureIoTClient 17:d01a2794d5d7 220 }
AzureIoTClient 17:d01a2794d5d7 221 }
AzureIoTClient 43:a4b2614eb860 222
AzureIoTClient 43:a4b2614eb860 223 int main(void)
AzureIoTClient 43:a4b2614eb860 224 {
AzureIoTClient 43:a4b2614eb860 225 iothub_client_sample_amqp_run();
AzureIoTClient 43:a4b2614eb860 226 return 0;
AzureIoTClient 43:a4b2614eb860 227 }