Azure IoT / Mbed 2 deprecated iothub_client_sample_http

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Dependencies:   iothub_client EthernetInterface iothub_http_transport mbed-rtos mbed wolfSSL azure_c_shared_utility NTPClient

iothub_client_sample_http.c@20:52f8298d7256, 2015-12-17 (annotated)

Committer:
AzureIoTClient
Date:
Thu Dec 17 18:23:58 2015 -0800
Revision:
20:52f8298d7256
Parent:
18:e3e29fc771c9
Child:
33:f8eb46ca453d
v1.0.0-preview.4

Who changed what in which revision?

UserRevisionLine numberNew contents of line
AzureIoTClient 18:e3e29fc771c9 1 // Copyright (c) Microsoft. All rights reserved.
AzureIoTClient 18:e3e29fc771c9 2 // Licensed under the MIT license. See LICENSE file in the project root for full license information.
AzureIoTClient 18:e3e29fc771c9 3
AzureIoTClient 18:e3e29fc771c9 4 #include <stdio.h>
AzureIoTClient 18:e3e29fc771c9 5 #include <stdlib.h>
AzureIoTClient 18:e3e29fc771c9 6
AzureIoTClient 18:e3e29fc771c9 7 /* This sample uses the _LL APIs of iothub_client for example purposes.
AzureIoTClient 18:e3e29fc771c9 8 That does not mean that HTTP only works with the _LL APIs.
AzureIoTClient 18:e3e29fc771c9 9 Simply changing the using the convenience layer (functions not having _LL)
AzureIoTClient 18:e3e29fc771c9 10 and removing calls to _DoWork will yield the same results. */
AzureIoTClient 18:e3e29fc771c9 11
AzureIoTClient 20:52f8298d7256 12 #ifdef ARDUINO
AzureIoTClient 20:52f8298d7256 13 #include "AzureIoT.h"
AzureIoTClient 20:52f8298d7256 14 #else
AzureIoTClient 18:e3e29fc771c9 15 #include "iothub_client_ll.h"
AzureIoTClient 18:e3e29fc771c9 16 #include "iothub_message.h"
AzureIoTClient 18:e3e29fc771c9 17 #include "crt_abstractions.h"
AzureIoTClient 18:e3e29fc771c9 18 #include "iothubtransporthttp.h"
AzureIoTClient 20:52f8298d7256 19 #endif
AzureIoTClient 18:e3e29fc771c9 20
AzureIoTClient 18:e3e29fc771c9 21 #ifdef MBED_BUILD_TIMESTAMP
AzureIoTClient 18:e3e29fc771c9 22 #include "certs.h"
AzureIoTClient 18:e3e29fc771c9 23 #endif // MBED_BUILD_TIMESTAMP
AzureIoTClient 18:e3e29fc771c9 24
AzureIoTClient 20:52f8298d7256 25 /*String containing Hostname, Device Id & Device Key in the format: */
AzureIoTClient 20:52f8298d7256 26 /* "HostName=<host_name>;DeviceId=<device_id>;SharedAccessKey=<device_key>" */
AzureIoTClient 18:e3e29fc771c9 27 static const char* connectionString = "[device connection string]";
AzureIoTClient 18:e3e29fc771c9 28 static int callbackCounter;
AzureIoTClient 18:e3e29fc771c9 29
AzureIoTClient 18:e3e29fc771c9 30 DEFINE_ENUM_STRINGS(IOTHUB_CLIENT_CONFIRMATION_RESULT, IOTHUB_CLIENT_CONFIRMATION_RESULT_VALUES);
AzureIoTClient 18:e3e29fc771c9 31
AzureIoTClient 18:e3e29fc771c9 32 typedef struct EVENT_INSTANCE_TAG
AzureIoTClient 18:e3e29fc771c9 33 {
AzureIoTClient 18:e3e29fc771c9 34 IOTHUB_MESSAGE_HANDLE messageHandle;
AzureIoTClient 18:e3e29fc771c9 35 int messageTrackingId; // For tracking the messages within the user callback.
AzureIoTClient 18:e3e29fc771c9 36 } EVENT_INSTANCE;
AzureIoTClient 18:e3e29fc771c9 37
AzureIoTClient 18:e3e29fc771c9 38 static IOTHUBMESSAGE_DISPOSITION_RESULT ReceiveMessageCallback(IOTHUB_MESSAGE_HANDLE message, void* userContextCallback)
AzureIoTClient 18:e3e29fc771c9 39 {
AzureIoTClient 18:e3e29fc771c9 40 int* counter = (int*)userContextCallback;
AzureIoTClient 18:e3e29fc771c9 41 const char* buffer;
AzureIoTClient 18:e3e29fc771c9 42 size_t size;
AzureIoTClient 20:52f8298d7256 43 MAP_HANDLE mapProperties;
AzureIoTClient 20:52f8298d7256 44
AzureIoTClient 18:e3e29fc771c9 45 if (IoTHubMessage_GetByteArray(message, (const unsigned char**)&buffer, &size) != IOTHUB_MESSAGE_OK)
AzureIoTClient 18:e3e29fc771c9 46 {
AzureIoTClient 18:e3e29fc771c9 47 printf("unable to retrieve the message data\r\n");
AzureIoTClient 18:e3e29fc771c9 48 }
AzureIoTClient 18:e3e29fc771c9 49 else
AzureIoTClient 18:e3e29fc771c9 50 {
AzureIoTClient 18:e3e29fc771c9 51 (void)printf("Received Message [%d] with Data: <<<%.*s>>> & Size=%d\r\n", *counter, (int)size, buffer, (int)size);
AzureIoTClient 18:e3e29fc771c9 52 }
AzureIoTClient 18:e3e29fc771c9 53
AzureIoTClient 18:e3e29fc771c9 54 // Retrieve properties from the message
AzureIoTClient 20:52f8298d7256 55 mapProperties = IoTHubMessage_Properties(message);
AzureIoTClient 18:e3e29fc771c9 56 if (mapProperties != NULL)
AzureIoTClient 18:e3e29fc771c9 57 {
AzureIoTClient 18:e3e29fc771c9 58 const char*const* keys;
AzureIoTClient 18:e3e29fc771c9 59 const char*const* values;
AzureIoTClient 18:e3e29fc771c9 60 size_t propertyCount = 0;
AzureIoTClient 18:e3e29fc771c9 61 if (Map_GetInternals(mapProperties, &keys, &values, &propertyCount) == MAP_OK)
AzureIoTClient 18:e3e29fc771c9 62 {
AzureIoTClient 18:e3e29fc771c9 63 if (propertyCount > 0)
AzureIoTClient 18:e3e29fc771c9 64 {
AzureIoTClient 20:52f8298d7256 65 size_t index;
AzureIoTClient 20:52f8298d7256 66
AzureIoTClient 18:e3e29fc771c9 67 printf("Message Properties:\r\n");
AzureIoTClient 20:52f8298d7256 68 for (index = 0; index < propertyCount; index++)
AzureIoTClient 18:e3e29fc771c9 69 {
AzureIoTClient 18:e3e29fc771c9 70 printf("\tKey: %s Value: %s\r\n", keys[index], values[index]);
AzureIoTClient 18:e3e29fc771c9 71 }
AzureIoTClient 18:e3e29fc771c9 72 printf("\r\n");
AzureIoTClient 18:e3e29fc771c9 73 }
AzureIoTClient 18:e3e29fc771c9 74 }
AzureIoTClient 18:e3e29fc771c9 75 }
AzureIoTClient 18:e3e29fc771c9 76
AzureIoTClient 18:e3e29fc771c9 77 /* Some device specific action code goes here... */
AzureIoTClient 18:e3e29fc771c9 78 (*counter)++;
AzureIoTClient 18:e3e29fc771c9 79 return IOTHUBMESSAGE_ACCEPTED;
AzureIoTClient 18:e3e29fc771c9 80 }
AzureIoTClient 18:e3e29fc771c9 81
AzureIoTClient 18:e3e29fc771c9 82 static void SendConfirmationCallback(IOTHUB_CLIENT_CONFIRMATION_RESULT result, void* userContextCallback)
AzureIoTClient 18:e3e29fc771c9 83 {
AzureIoTClient 18:e3e29fc771c9 84 EVENT_INSTANCE* eventInstance = (EVENT_INSTANCE*)userContextCallback;
AzureIoTClient 18:e3e29fc771c9 85 (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 18:e3e29fc771c9 86 /* Some device specific action code goes here... */
AzureIoTClient 18:e3e29fc771c9 87 callbackCounter++;
AzureIoTClient 18:e3e29fc771c9 88 IoTHubMessage_Destroy(eventInstance->messageHandle);
AzureIoTClient 18:e3e29fc771c9 89 }
AzureIoTClient 18:e3e29fc771c9 90
AzureIoTClient 18:e3e29fc771c9 91 static char msgText[1024];
AzureIoTClient 18:e3e29fc771c9 92 static char propText[1024];
AzureIoTClient 18:e3e29fc771c9 93 #define MESSAGE_COUNT 5
AzureIoTClient 18:e3e29fc771c9 94
AzureIoTClient 18:e3e29fc771c9 95 void iothub_client_sample_http_run(void)
AzureIoTClient 18:e3e29fc771c9 96 {
AzureIoTClient 18:e3e29fc771c9 97 IOTHUB_CLIENT_LL_HANDLE iotHubClientHandle;
AzureIoTClient 18:e3e29fc771c9 98
AzureIoTClient 18:e3e29fc771c9 99 EVENT_INSTANCE messages[MESSAGE_COUNT];
AzureIoTClient 20:52f8298d7256 100 double avgWindSpeed = 10.0;
AzureIoTClient 20:52f8298d7256 101 int receiveContext = 0;
AzureIoTClient 18:e3e29fc771c9 102
AzureIoTClient 18:e3e29fc771c9 103 srand((unsigned int)time(NULL));
AzureIoTClient 18:e3e29fc771c9 104
AzureIoTClient 18:e3e29fc771c9 105 callbackCounter = 0;
AzureIoTClient 18:e3e29fc771c9 106
AzureIoTClient 18:e3e29fc771c9 107 (void)printf("Starting the IoTHub client sample HTTP...\r\n");
AzureIoTClient 18:e3e29fc771c9 108
AzureIoTClient 18:e3e29fc771c9 109 if ((iotHubClientHandle = IoTHubClient_LL_CreateFromConnectionString(connectionString, HTTP_Protocol)) == NULL)
AzureIoTClient 18:e3e29fc771c9 110 {
AzureIoTClient 18:e3e29fc771c9 111 (void)printf("ERROR: iotHubClientHandle is NULL!\r\n");
AzureIoTClient 18:e3e29fc771c9 112 }
AzureIoTClient 18:e3e29fc771c9 113 else
AzureIoTClient 18:e3e29fc771c9 114 {
AzureIoTClient 18:e3e29fc771c9 115 unsigned int timeout = 241000;
AzureIoTClient 20:52f8298d7256 116 // Because it can poll "after 9 seconds" polls will happen effectively // at ~10 seconds.
AzureIoTClient 20:52f8298d7256 117 // Note that for scalabilty, the default value of minimumPollingTime
AzureIoTClient 20:52f8298d7256 118 // is 25 minutes. For more information, see:
AzureIoTClient 20:52f8298d7256 119 // https://azure.microsoft.com/documentation/articles/iot-hub-devguide/#messaging
AzureIoTClient 20:52f8298d7256 120 unsigned int minimumPollingTime = 9;
AzureIoTClient 18:e3e29fc771c9 121 if (IoTHubClient_LL_SetOption(iotHubClientHandle, "timeout", &timeout) != IOTHUB_CLIENT_OK)
AzureIoTClient 18:e3e29fc771c9 122 {
AzureIoTClient 18:e3e29fc771c9 123 printf("failure to set option \"timeout\"\r\n");
AzureIoTClient 18:e3e29fc771c9 124 }
AzureIoTClient 18:e3e29fc771c9 125
AzureIoTClient 18:e3e29fc771c9 126 if (IoTHubClient_LL_SetOption(iotHubClientHandle, "MinimumPollingTime", &minimumPollingTime) != IOTHUB_CLIENT_OK)
AzureIoTClient 18:e3e29fc771c9 127 {
AzureIoTClient 18:e3e29fc771c9 128 printf("failure to set option \"MinimumPollingTime\"\r\n");
AzureIoTClient 18:e3e29fc771c9 129 }
AzureIoTClient 18:e3e29fc771c9 130
AzureIoTClient 18:e3e29fc771c9 131 #ifdef MBED_BUILD_TIMESTAMP
AzureIoTClient 18:e3e29fc771c9 132 // For mbed add the certificate information
AzureIoTClient 18:e3e29fc771c9 133 if (IoTHubClient_LL_SetOption(iotHubClientHandle, "TrustedCerts", certificates) != IOTHUB_CLIENT_OK)
AzureIoTClient 18:e3e29fc771c9 134 {
AzureIoTClient 18:e3e29fc771c9 135 printf("failure to set option \"TrustedCerts\"\r\n");
AzureIoTClient 18:e3e29fc771c9 136 }
AzureIoTClient 18:e3e29fc771c9 137 #endif // MBED_BUILD_TIMESTAMP
AzureIoTClient 18:e3e29fc771c9 138
AzureIoTClient 18:e3e29fc771c9 139 /* Setting Message call back, so we can receive Commands. */
AzureIoTClient 18:e3e29fc771c9 140 if (IoTHubClient_LL_SetMessageCallback(iotHubClientHandle, ReceiveMessageCallback, &receiveContext) != IOTHUB_CLIENT_OK)
AzureIoTClient 18:e3e29fc771c9 141 {
AzureIoTClient 18:e3e29fc771c9 142 (void)printf("ERROR: IoTHubClient_LL_SetMessageCallback..........FAILED!\r\n");
AzureIoTClient 18:e3e29fc771c9 143 }
AzureIoTClient 18:e3e29fc771c9 144 else
AzureIoTClient 18:e3e29fc771c9 145 {
AzureIoTClient 20:52f8298d7256 146 int i;
AzureIoTClient 20:52f8298d7256 147
AzureIoTClient 18:e3e29fc771c9 148 (void)printf("IoTHubClient_LL_SetMessageCallback...successful.\r\n");
AzureIoTClient 18:e3e29fc771c9 149
AzureIoTClient 18:e3e29fc771c9 150 /* Now that we are ready to receive commands, let's send some messages */
AzureIoTClient 20:52f8298d7256 151 for (i = 0; i < MESSAGE_COUNT; i++)
AzureIoTClient 18:e3e29fc771c9 152 {
AzureIoTClient 18:e3e29fc771c9 153 sprintf_s(msgText, sizeof(msgText), "{\"deviceId\": \"myFirstDevice\",\"windSpeed\": %.2f}", avgWindSpeed + (rand() % 4 + 2));
AzureIoTClient 18:e3e29fc771c9 154 if ((messages[i].messageHandle = IoTHubMessage_CreateFromByteArray((const unsigned char*)msgText, strlen(msgText))) == NULL)
AzureIoTClient 18:e3e29fc771c9 155 {
AzureIoTClient 18:e3e29fc771c9 156 (void)printf("ERROR: iotHubMessageHandle is NULL!\r\n");
AzureIoTClient 18:e3e29fc771c9 157 }
AzureIoTClient 18:e3e29fc771c9 158 else
AzureIoTClient 18:e3e29fc771c9 159 {
AzureIoTClient 20:52f8298d7256 160 MAP_HANDLE propMap;
AzureIoTClient 20:52f8298d7256 161
AzureIoTClient 18:e3e29fc771c9 162 messages[i].messageTrackingId = i;
AzureIoTClient 18:e3e29fc771c9 163
AzureIoTClient 20:52f8298d7256 164 propMap = IoTHubMessage_Properties(messages[i].messageHandle);
AzureIoTClient 18:e3e29fc771c9 165 sprintf_s(propText, sizeof(propText), "PropMsg_%d", i);
AzureIoTClient 18:e3e29fc771c9 166 if (Map_AddOrUpdate(propMap, "PropName", propText) != MAP_OK)
AzureIoTClient 18:e3e29fc771c9 167 {
AzureIoTClient 18:e3e29fc771c9 168 (void)printf("ERROR: Map_AddOrUpdate Failed!\r\n");
AzureIoTClient 18:e3e29fc771c9 169 }
AzureIoTClient 18:e3e29fc771c9 170
AzureIoTClient 18:e3e29fc771c9 171 if (IoTHubClient_LL_SendEventAsync(iotHubClientHandle, messages[i].messageHandle, SendConfirmationCallback, &messages[i]) != IOTHUB_CLIENT_OK)
AzureIoTClient 18:e3e29fc771c9 172 {
AzureIoTClient 18:e3e29fc771c9 173 (void)printf("ERROR: IoTHubClient_LL_SendEventAsync..........FAILED!\r\n");
AzureIoTClient 18:e3e29fc771c9 174 }
AzureIoTClient 18:e3e29fc771c9 175 else
AzureIoTClient 18:e3e29fc771c9 176 {
AzureIoTClient 18:e3e29fc771c9 177 (void)printf("IoTHubClient_LL_SendEventAsync accepted message [%d] for transmission to IoT Hub.\r\n", i);
AzureIoTClient 18:e3e29fc771c9 178 }
AzureIoTClient 18:e3e29fc771c9 179
AzureIoTClient 18:e3e29fc771c9 180 }
AzureIoTClient 18:e3e29fc771c9 181 }
AzureIoTClient 18:e3e29fc771c9 182 }
AzureIoTClient 18:e3e29fc771c9 183
AzureIoTClient 18:e3e29fc771c9 184 /* Wait for Commands. */
AzureIoTClient 18:e3e29fc771c9 185 while (1)
AzureIoTClient 18:e3e29fc771c9 186 {
AzureIoTClient 18:e3e29fc771c9 187 IoTHubClient_LL_DoWork(iotHubClientHandle);
AzureIoTClient 18:e3e29fc771c9 188 }
AzureIoTClient 18:e3e29fc771c9 189
AzureIoTClient 18:e3e29fc771c9 190 IoTHubClient_LL_Destroy(iotHubClientHandle);
AzureIoTClient 18:e3e29fc771c9 191 }
AzureIoTClient 18:e3e29fc771c9 192 }