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@31:7a8aed41e109, 2016-02-04 (annotated)

Committer:
Azure.IoT Build
Date:
Thu Feb 04 16:01:03 2016 -0800
Revision:
31:7a8aed41e109
Parent:
28:a1105bba4bb1
Child:
34:b7f31511a8ad
1.0.0

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
Azure.IoT Build 31:7a8aed41e109 7 #include "platform.h"
AzureIoTClient 17:d01a2794d5d7 8 #include "iothub_client.h"
AzureIoTClient 17:d01a2794d5d7 9 #include "iothub_message.h"
AzureIoTClient 17:d01a2794d5d7 10 #include "threadapi.h"
AzureIoTClient 17:d01a2794d5d7 11 #include "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 28:a1105bba4bb1 18 static const char* connectionString = "[device connection string]";
AzureIoTClient 17:d01a2794d5d7 19 static int callbackCounter;
AzureIoTClient 17:d01a2794d5d7 20
AzureIoTClient 17:d01a2794d5d7 21 DEFINE_ENUM_STRINGS(IOTHUB_CLIENT_CONFIRMATION_RESULT, IOTHUB_CLIENT_CONFIRMATION_RESULT_VALUES);
AzureIoTClient 17:d01a2794d5d7 22
AzureIoTClient 17:d01a2794d5d7 23 typedef struct EVENT_INSTANCE_TAG
AzureIoTClient 17:d01a2794d5d7 24 {
AzureIoTClient 17:d01a2794d5d7 25 IOTHUB_MESSAGE_HANDLE messageHandle;
AzureIoTClient 17:d01a2794d5d7 26 int messageTrackingId; // For tracking the messages within the user callback.
AzureIoTClient 17:d01a2794d5d7 27 } EVENT_INSTANCE;
AzureIoTClient 17:d01a2794d5d7 28
AzureIoTClient 17:d01a2794d5d7 29 static IOTHUBMESSAGE_DISPOSITION_RESULT ReceiveMessageCallback(IOTHUB_MESSAGE_HANDLE message, void* userContextCallback)
AzureIoTClient 17:d01a2794d5d7 30 {
AzureIoTClient 17:d01a2794d5d7 31 int* counter = (int*)userContextCallback;
Azure.IoT Build 31:7a8aed41e109 32 const unsigned char* buffer = NULL;
Azure.IoT Build 31:7a8aed41e109 33 size_t size = 0;
Azure.IoT Build 31:7a8aed41e109 34
Azure.IoT Build 31:7a8aed41e109 35 IOTHUBMESSAGE_CONTENT_TYPE contentType = IoTHubMessage_GetContentType(message);
AzureIoTClient 19:de28463ff3cc 36
Azure.IoT Build 31:7a8aed41e109 37 if (contentType == IOTHUBMESSAGE_BYTEARRAY)
Azure.IoT Build 31:7a8aed41e109 38 {
Azure.IoT Build 31:7a8aed41e109 39 if (IoTHubMessage_GetByteArray(message, &buffer, &size) == IOTHUB_MESSAGE_OK)
Azure.IoT Build 31:7a8aed41e109 40 {
Azure.IoT Build 31:7a8aed41e109 41 (void)printf("Received Message [%d] with BINARY Data: <<<%.*s>>> & Size=%d\r\n", *counter, (int)size, buffer, (int)size);
Azure.IoT Build 31:7a8aed41e109 42 }
Azure.IoT Build 31:7a8aed41e109 43 else
Azure.IoT Build 31:7a8aed41e109 44 {
Azure.IoT Build 31:7a8aed41e109 45 (void)printf("Failed getting the BINARY body of the message received.\r\n");
Azure.IoT Build 31:7a8aed41e109 46 }
Azure.IoT Build 31:7a8aed41e109 47 }
Azure.IoT Build 31:7a8aed41e109 48 else if (contentType == IOTHUBMESSAGE_STRING)
AzureIoTClient 17:d01a2794d5d7 49 {
Azure.IoT Build 31:7a8aed41e109 50 if ((buffer = IoTHubMessage_GetString(message)) != NULL && (size = strlen(buffer)) > 0)
Azure.IoT Build 31:7a8aed41e109 51 {
Azure.IoT Build 31:7a8aed41e109 52 (void)printf("Received Message [%d] with STRING Data: <<<%.*s>>> & Size=%d\r\n", *counter, (int)size, buffer, (int)size);
Azure.IoT Build 31:7a8aed41e109 53 }
Azure.IoT Build 31:7a8aed41e109 54 else
Azure.IoT Build 31:7a8aed41e109 55 {
Azure.IoT Build 31:7a8aed41e109 56 (void)printf("Failed getting the STRING body of the message received.\r\n");
Azure.IoT Build 31:7a8aed41e109 57 }
Azure.IoT Build 31:7a8aed41e109 58 }
Azure.IoT Build 31:7a8aed41e109 59 else
Azure.IoT Build 31:7a8aed41e109 60 {
Azure.IoT Build 31:7a8aed41e109 61 (void)printf("Failed getting the body of the message received (type %i).\r\n", contentType);
AzureIoTClient 17:d01a2794d5d7 62 }
AzureIoTClient 17:d01a2794d5d7 63
AzureIoTClient 17:d01a2794d5d7 64 // Retrieve properties from the message
AzureIoTClient 17:d01a2794d5d7 65 MAP_HANDLE mapProperties = IoTHubMessage_Properties(message);
AzureIoTClient 17:d01a2794d5d7 66 if (mapProperties != NULL)
AzureIoTClient 17:d01a2794d5d7 67 {
AzureIoTClient 17:d01a2794d5d7 68 const char*const* keys;
AzureIoTClient 17:d01a2794d5d7 69 const char*const* values;
AzureIoTClient 17:d01a2794d5d7 70 size_t propertyCount = 0;
AzureIoTClient 17:d01a2794d5d7 71 if (Map_GetInternals(mapProperties, &keys, &values, &propertyCount) == MAP_OK)
AzureIoTClient 17:d01a2794d5d7 72 {
AzureIoTClient 17:d01a2794d5d7 73 if (propertyCount > 0)
AzureIoTClient 17:d01a2794d5d7 74 {
Azure.IoT Build 31:7a8aed41e109 75 size_t index;
Azure.IoT Build 31:7a8aed41e109 76
AzureIoTClient 17:d01a2794d5d7 77 printf("Message Properties:\r\n");
Azure.IoT Build 31:7a8aed41e109 78 for (index = 0; index < propertyCount; index++)
AzureIoTClient 17:d01a2794d5d7 79 {
AzureIoTClient 17:d01a2794d5d7 80 printf("\tKey: %s Value: %s\r\n", keys[index], values[index]);
AzureIoTClient 17:d01a2794d5d7 81 }
AzureIoTClient 17:d01a2794d5d7 82 printf("\r\n");
AzureIoTClient 17:d01a2794d5d7 83 }
AzureIoTClient 17:d01a2794d5d7 84 }
AzureIoTClient 17:d01a2794d5d7 85 }
AzureIoTClient 17:d01a2794d5d7 86
AzureIoTClient 17:d01a2794d5d7 87 /* Some device specific action code goes here... */
AzureIoTClient 17:d01a2794d5d7 88 (*counter)++;
AzureIoTClient 17:d01a2794d5d7 89 return IOTHUBMESSAGE_ACCEPTED;
AzureIoTClient 17:d01a2794d5d7 90 }
AzureIoTClient 17:d01a2794d5d7 91
AzureIoTClient 17:d01a2794d5d7 92 static void SendConfirmationCallback(IOTHUB_CLIENT_CONFIRMATION_RESULT result, void* userContextCallback)
AzureIoTClient 17:d01a2794d5d7 93 {
AzureIoTClient 17:d01a2794d5d7 94 EVENT_INSTANCE* eventInstance = (EVENT_INSTANCE*)userContextCallback;
AzureIoTClient 17:d01a2794d5d7 95 (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 96 /* Some device specific action code goes here... */
AzureIoTClient 17:d01a2794d5d7 97 callbackCounter++;
AzureIoTClient 17:d01a2794d5d7 98 IoTHubMessage_Destroy(eventInstance->messageHandle);
AzureIoTClient 17:d01a2794d5d7 99 }
AzureIoTClient 17:d01a2794d5d7 100
AzureIoTClient 17:d01a2794d5d7 101 static char msgText[1024];
AzureIoTClient 17:d01a2794d5d7 102 static char propText[1024];
AzureIoTClient 17:d01a2794d5d7 103 #define MESSAGE_COUNT 5
AzureIoTClient 17:d01a2794d5d7 104
AzureIoTClient 17:d01a2794d5d7 105 void iothub_client_sample_amqp_run(void)
Azure.IoT Build 31:7a8aed41e109 106 {
AzureIoTClient 17:d01a2794d5d7 107 IOTHUB_CLIENT_HANDLE iotHubClientHandle;
AzureIoTClient 17:d01a2794d5d7 108
AzureIoTClient 17:d01a2794d5d7 109 EVENT_INSTANCE messages[MESSAGE_COUNT];
AzureIoTClient 17:d01a2794d5d7 110
AzureIoTClient 17:d01a2794d5d7 111 srand((unsigned int)time(NULL));
AzureIoTClient 17:d01a2794d5d7 112 double avgWindSpeed = 10.0;
AzureIoTClient 17:d01a2794d5d7 113
AzureIoTClient 17:d01a2794d5d7 114 callbackCounter = 0;
AzureIoTClient 17:d01a2794d5d7 115 int receiveContext = 0;
AzureIoTClient 17:d01a2794d5d7 116
AzureIoTClient 17:d01a2794d5d7 117 (void)printf("Starting the IoTHub client sample AMQP...\r\n");
Azure.IoT Build 31:7a8aed41e109 118
AzureIoTClient 17:d01a2794d5d7 119 if ((iotHubClientHandle = IoTHubClient_CreateFromConnectionString(connectionString, AMQP_Protocol)) == NULL)
AzureIoTClient 17:d01a2794d5d7 120 {
AzureIoTClient 17:d01a2794d5d7 121 (void)printf("ERROR: iotHubClientHandle is NULL!\r\n");
AzureIoTClient 17:d01a2794d5d7 122 }
AzureIoTClient 17:d01a2794d5d7 123 else
AzureIoTClient 17:d01a2794d5d7 124 {
AzureIoTClient 17:d01a2794d5d7 125 #ifdef MBED_BUILD_TIMESTAMP
AzureIoTClient 17:d01a2794d5d7 126 // For mbed add the certificate information
AzureIoTClient 17:d01a2794d5d7 127 if (IoTHubClient_SetOption(iotHubClientHandle, "TrustedCerts", certificates) != IOTHUB_CLIENT_OK)
AzureIoTClient 17:d01a2794d5d7 128 {
AzureIoTClient 17:d01a2794d5d7 129 printf("failure to set option \"TrustedCerts\"\r\n");
AzureIoTClient 17:d01a2794d5d7 130 }
AzureIoTClient 17:d01a2794d5d7 131 #endif // MBED_BUILD_TIMESTAMP
AzureIoTClient 17:d01a2794d5d7 132
AzureIoTClient 17:d01a2794d5d7 133 /* Setting Message call back, so we can receive Commands. */
AzureIoTClient 17:d01a2794d5d7 134 if (IoTHubClient_SetMessageCallback(iotHubClientHandle, ReceiveMessageCallback, &receiveContext) != IOTHUB_CLIENT_OK)
AzureIoTClient 17:d01a2794d5d7 135 {
AzureIoTClient 17:d01a2794d5d7 136 (void)printf("ERROR: IoTHubClient_SetMessageCallback..........FAILED!\r\n");
AzureIoTClient 17:d01a2794d5d7 137 }
AzureIoTClient 17:d01a2794d5d7 138 else
AzureIoTClient 17:d01a2794d5d7 139 {
AzureIoTClient 17:d01a2794d5d7 140 (void)printf("IoTHubClient_SetMessageCallback...successful.\r\n");
AzureIoTClient 17:d01a2794d5d7 141
AzureIoTClient 17:d01a2794d5d7 142 /* Now that we are ready to receive commands, let's send some messages */
AzureIoTClient 17:d01a2794d5d7 143 for (size_t i = 0; i < MESSAGE_COUNT; i++)
AzureIoTClient 17:d01a2794d5d7 144 {
AzureIoTClient 17:d01a2794d5d7 145 sprintf_s(msgText, sizeof(msgText), "{\"deviceId\":\"myFirstDevice\",\"windSpeed\":%.2f}", avgWindSpeed+(rand()%4+2) );
AzureIoTClient 17:d01a2794d5d7 146 if ((messages[i].messageHandle = IoTHubMessage_CreateFromByteArray((const unsigned char*)msgText, strlen(msgText))) == NULL)
AzureIoTClient 17:d01a2794d5d7 147 {
AzureIoTClient 17:d01a2794d5d7 148 (void)printf("ERROR: iotHubMessageHandle is NULL!\r\n");
AzureIoTClient 17:d01a2794d5d7 149 }
AzureIoTClient 17:d01a2794d5d7 150 else
AzureIoTClient 17:d01a2794d5d7 151 {
AzureIoTClient 17:d01a2794d5d7 152 messages[i].messageTrackingId = i;
AzureIoTClient 17:d01a2794d5d7 153
AzureIoTClient 17:d01a2794d5d7 154 MAP_HANDLE propMap = IoTHubMessage_Properties(messages[i].messageHandle);
AzureIoTClient 17:d01a2794d5d7 155 sprintf_s(propText, sizeof(propText), "PropMsg_%d", i);
AzureIoTClient 17:d01a2794d5d7 156 if (Map_AddOrUpdate(propMap, "PropName", propText) != MAP_OK)
AzureIoTClient 17:d01a2794d5d7 157 {
AzureIoTClient 17:d01a2794d5d7 158 (void)printf("ERROR: Map_AddOrUpdate Failed!\r\n");
AzureIoTClient 17:d01a2794d5d7 159 }
AzureIoTClient 17:d01a2794d5d7 160
AzureIoTClient 17:d01a2794d5d7 161 if (IoTHubClient_SendEventAsync(iotHubClientHandle, messages[i].messageHandle, SendConfirmationCallback, &messages[i]) != IOTHUB_CLIENT_OK)
AzureIoTClient 17:d01a2794d5d7 162 {
AzureIoTClient 17:d01a2794d5d7 163 (void)printf("ERROR: IoTHubClient_SendEventAsync..........FAILED!\r\n");
AzureIoTClient 17:d01a2794d5d7 164 }
AzureIoTClient 17:d01a2794d5d7 165 else
AzureIoTClient 17:d01a2794d5d7 166 {
AzureIoTClient 17:d01a2794d5d7 167 (void)printf("IoTHubClient_SendEventAsync accepted data for transmission to IoT Hub.\r\n");
AzureIoTClient 17:d01a2794d5d7 168 }
AzureIoTClient 17:d01a2794d5d7 169 }
AzureIoTClient 17:d01a2794d5d7 170 }
AzureIoTClient 17:d01a2794d5d7 171
AzureIoTClient 17:d01a2794d5d7 172 /* Wait for Commands. */
AzureIoTClient 17:d01a2794d5d7 173 (void)printf("Press any key to exit the application. \r\n");
AzureIoTClient 17:d01a2794d5d7 174 (void)getchar();
AzureIoTClient 17:d01a2794d5d7 175 }
AzureIoTClient 17:d01a2794d5d7 176
AzureIoTClient 17:d01a2794d5d7 177 IoTHubClient_Destroy(iotHubClientHandle);
AzureIoTClient 17:d01a2794d5d7 178 }
AzureIoTClient 17:d01a2794d5d7 179 }