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@76:e9a30712b6d7, 2017-08-25 (annotated)

Committer:
AzureIoTClient
Date:
Fri Aug 25 11:24:21 2017 -0700
Revision:
76:e9a30712b6d7
Parent:
68:a8c0f61d8478
Child:
77:d4c04296120e
1.1.22

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 41:7a930aa6dc01 8 That does not mean that HTTP only works with the _LL APIs.
AzureIoTClient 41:7a930aa6dc01 9 Simply changing the using the convenience layer (functions not having _LL)
AzureIoTClient 41:7a930aa6dc01 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
Azure.IoT Build 46:91bd03862871 15 #include "azure_c_shared_utility/threadapi.h"
Azure.IoT Build 46:91bd03862871 16 #include "azure_c_shared_utility/crt_abstractions.h"
Azure.IoT Build 46:91bd03862871 17 #include "azure_c_shared_utility/platform.h"
AzureIoTClient 18:e3e29fc771c9 18 #include "iothub_client_ll.h"
AzureIoTClient 18:e3e29fc771c9 19 #include "iothub_message.h"
AzureIoTClient 18:e3e29fc771c9 20 #include "iothubtransporthttp.h"
AzureIoTClient 20:52f8298d7256 21 #endif
AzureIoTClient 18:e3e29fc771c9 22
AzureIoTClient 18:e3e29fc771c9 23 #ifdef MBED_BUILD_TIMESTAMP
AzureIoTClient 18:e3e29fc771c9 24 #include "certs.h"
AzureIoTClient 18:e3e29fc771c9 25 #endif // MBED_BUILD_TIMESTAMP
AzureIoTClient 18:e3e29fc771c9 26
AzureIoTClient 39:405f9c637ba4 27 /*String containing Hostname, Device Id & Device Key in the format: */
AzureIoTClient 39:405f9c637ba4 28 /* "HostName=<host_name>;DeviceId=<device_id>;SharedAccessKey=<device_key>" */
AzureIoTClient 39:405f9c637ba4 29 /* "HostName=<host_name>;DeviceId=<device_id>;SharedAccessSignature=<device_sas_token>" */
AzureIoTClient 18:e3e29fc771c9 30 static const char* connectionString = "[device connection string]";
AzureIoTClient 39:405f9c637ba4 31
AzureIoTClient 48:07c7ca66634a 32
AzureIoTClient 18:e3e29fc771c9 33 static int callbackCounter;
AzureIoTClient 42:289de245ba1d 34 static bool g_continueRunning;
Azure.IoT Build 46:91bd03862871 35 static char msgText[1024];
Azure.IoT Build 46:91bd03862871 36 static char propText[1024];
Azure.IoT Build 46:91bd03862871 37 #define MESSAGE_COUNT 5
Azure.IoT Build 46:91bd03862871 38 #define DOWORK_LOOP_NUM 3
AzureIoTClient 18:e3e29fc771c9 39
AzureIoTClient 18:e3e29fc771c9 40
AzureIoTClient 18:e3e29fc771c9 41 typedef struct EVENT_INSTANCE_TAG
AzureIoTClient 18:e3e29fc771c9 42 {
AzureIoTClient 18:e3e29fc771c9 43 IOTHUB_MESSAGE_HANDLE messageHandle;
AzureIoTClient 47:bc18bf0e4a6a 44 size_t messageTrackingId; // For tracking the messages within the user callback.
AzureIoTClient 18:e3e29fc771c9 45 } EVENT_INSTANCE;
AzureIoTClient 18:e3e29fc771c9 46
AzureIoTClient 18:e3e29fc771c9 47 static IOTHUBMESSAGE_DISPOSITION_RESULT ReceiveMessageCallback(IOTHUB_MESSAGE_HANDLE message, void* userContextCallback)
AzureIoTClient 18:e3e29fc771c9 48 {
AzureIoTClient 18:e3e29fc771c9 49 int* counter = (int*)userContextCallback;
AzureIoTClient 18:e3e29fc771c9 50 const char* buffer;
AzureIoTClient 18:e3e29fc771c9 51 size_t size;
AzureIoTClient 41:7a930aa6dc01 52 MAP_HANDLE mapProperties;
AzureIoTClient 62:2320ad565fc3 53 const char* messageId;
AzureIoTClient 62:2320ad565fc3 54 const char* correlationId;
AzureIoTClient 76:e9a30712b6d7 55 const char* contentType;
AzureIoTClient 76:e9a30712b6d7 56 const char* contentEncoding;
AzureIoTClient 20:52f8298d7256 57
AzureIoTClient 62:2320ad565fc3 58 // Message properties
AzureIoTClient 62:2320ad565fc3 59 if ((messageId = IoTHubMessage_GetMessageId(message)) == NULL)
AzureIoTClient 62:2320ad565fc3 60 {
AzureIoTClient 62:2320ad565fc3 61 messageId = "<null>";
AzureIoTClient 62:2320ad565fc3 62 }
AzureIoTClient 62:2320ad565fc3 63
AzureIoTClient 62:2320ad565fc3 64 if ((correlationId = IoTHubMessage_GetCorrelationId(message)) == NULL)
AzureIoTClient 62:2320ad565fc3 65 {
AzureIoTClient 62:2320ad565fc3 66 correlationId = "<null>";
AzureIoTClient 62:2320ad565fc3 67 }
AzureIoTClient 62:2320ad565fc3 68
AzureIoTClient 76:e9a30712b6d7 69 // TODO: re-enable after IoTHubClient nuget package has been released (ewertons)
AzureIoTClient 76:e9a30712b6d7 70 //if ((contentType = IoTHubMessage_GetContentTypeSystemProperty(message)) == NULL)
AzureIoTClient 76:e9a30712b6d7 71 //{
AzureIoTClient 76:e9a30712b6d7 72 contentType = "<null>";
AzureIoTClient 76:e9a30712b6d7 73 //}
AzureIoTClient 76:e9a30712b6d7 74
AzureIoTClient 76:e9a30712b6d7 75 // TODO: re-enable after IoTHubClient nuget package has been released (ewertons)
AzureIoTClient 76:e9a30712b6d7 76 //if ((contentEncoding = IoTHubMessage_GetContentEncodingSystemProperty(message)) == NULL)
AzureIoTClient 76:e9a30712b6d7 77 //{
AzureIoTClient 76:e9a30712b6d7 78 contentEncoding = "<null>";
AzureIoTClient 76:e9a30712b6d7 79 //}
AzureIoTClient 76:e9a30712b6d7 80
AzureIoTClient 62:2320ad565fc3 81 // Message content
AzureIoTClient 18:e3e29fc771c9 82 if (IoTHubMessage_GetByteArray(message, (const unsigned char**)&buffer, &size) != IOTHUB_MESSAGE_OK)
AzureIoTClient 18:e3e29fc771c9 83 {
AzureIoTClient 18:e3e29fc771c9 84 printf("unable to retrieve the message data\r\n");
AzureIoTClient 18:e3e29fc771c9 85 }
AzureIoTClient 18:e3e29fc771c9 86 else
AzureIoTClient 18:e3e29fc771c9 87 {
AzureIoTClient 76:e9a30712b6d7 88 (void)printf("Received Message [%d]\r\n Message ID: %s\r\n Correlation ID: %s\r\n Content-Type: %s\r\n Content-Encoding: %s\r\n Data: <<<%.*s>>> & Size=%d\r\n",
AzureIoTClient 76:e9a30712b6d7 89 *counter, messageId, correlationId, contentType, contentEncoding, (int)size, buffer, (int)size);
AzureIoTClient 54:54dc461c75da 90 if (size == (strlen("quit") * sizeof(char)) && memcmp(buffer, "quit", size) == 0)
AzureIoTClient 42:289de245ba1d 91 {
AzureIoTClient 42:289de245ba1d 92 g_continueRunning = false;
AzureIoTClient 42:289de245ba1d 93 }
AzureIoTClient 18:e3e29fc771c9 94 }
AzureIoTClient 18:e3e29fc771c9 95
AzureIoTClient 18:e3e29fc771c9 96 // Retrieve properties from the message
AzureIoTClient 20:52f8298d7256 97 mapProperties = IoTHubMessage_Properties(message);
AzureIoTClient 18:e3e29fc771c9 98 if (mapProperties != NULL)
AzureIoTClient 18:e3e29fc771c9 99 {
AzureIoTClient 18:e3e29fc771c9 100 const char*const* keys;
AzureIoTClient 18:e3e29fc771c9 101 const char*const* values;
AzureIoTClient 18:e3e29fc771c9 102 size_t propertyCount = 0;
AzureIoTClient 18:e3e29fc771c9 103 if (Map_GetInternals(mapProperties, &keys, &values, &propertyCount) == MAP_OK)
AzureIoTClient 18:e3e29fc771c9 104 {
AzureIoTClient 18:e3e29fc771c9 105 if (propertyCount > 0)
AzureIoTClient 18:e3e29fc771c9 106 {
AzureIoTClient 41:7a930aa6dc01 107 size_t index;
AzureIoTClient 20:52f8298d7256 108
AzureIoTClient 62:2320ad565fc3 109 printf(" Message Properties:\r\n");
AzureIoTClient 20:52f8298d7256 110 for (index = 0; index < propertyCount; index++)
AzureIoTClient 18:e3e29fc771c9 111 {
AzureIoTClient 18:e3e29fc771c9 112 printf("\tKey: %s Value: %s\r\n", keys[index], values[index]);
AzureIoTClient 18:e3e29fc771c9 113 }
AzureIoTClient 18:e3e29fc771c9 114 printf("\r\n");
AzureIoTClient 18:e3e29fc771c9 115 }
AzureIoTClient 18:e3e29fc771c9 116 }
AzureIoTClient 18:e3e29fc771c9 117 }
AzureIoTClient 18:e3e29fc771c9 118
AzureIoTClient 18:e3e29fc771c9 119 /* Some device specific action code goes here... */
AzureIoTClient 18:e3e29fc771c9 120 (*counter)++;
AzureIoTClient 18:e3e29fc771c9 121 return IOTHUBMESSAGE_ACCEPTED;
AzureIoTClient 18:e3e29fc771c9 122 }
AzureIoTClient 18:e3e29fc771c9 123
AzureIoTClient 18:e3e29fc771c9 124 static void SendConfirmationCallback(IOTHUB_CLIENT_CONFIRMATION_RESULT result, void* userContextCallback)
AzureIoTClient 18:e3e29fc771c9 125 {
AzureIoTClient 18:e3e29fc771c9 126 EVENT_INSTANCE* eventInstance = (EVENT_INSTANCE*)userContextCallback;
AzureIoTClient 49:2aa1b773af3c 127
AzureIoTClient 49:2aa1b773af3c 128 (void)printf("Confirmation[%d] received for message tracking id = %zu with result = %s\r\n", callbackCounter, eventInstance->messageTrackingId, ENUM_TO_STRING(IOTHUB_CLIENT_CONFIRMATION_RESULT, result));
AzureIoTClient 49:2aa1b773af3c 129
AzureIoTClient 18:e3e29fc771c9 130 /* Some device specific action code goes here... */
AzureIoTClient 18:e3e29fc771c9 131 callbackCounter++;
AzureIoTClient 18:e3e29fc771c9 132 IoTHubMessage_Destroy(eventInstance->messageHandle);
AzureIoTClient 18:e3e29fc771c9 133 }
AzureIoTClient 18:e3e29fc771c9 134
AzureIoTClient 18:e3e29fc771c9 135 void iothub_client_sample_http_run(void)
AzureIoTClient 18:e3e29fc771c9 136 {
AzureIoTClient 18:e3e29fc771c9 137 IOTHUB_CLIENT_LL_HANDLE iotHubClientHandle;
AzureIoTClient 18:e3e29fc771c9 138
AzureIoTClient 18:e3e29fc771c9 139 EVENT_INSTANCE messages[MESSAGE_COUNT];
AzureIoTClient 20:52f8298d7256 140 double avgWindSpeed = 10.0;
AzureIoTClient 68:a8c0f61d8478 141 double minTemperature = 20.0;
AzureIoTClient 68:a8c0f61d8478 142 double minHumidity = 60.0;
AzureIoTClient 20:52f8298d7256 143 int receiveContext = 0;
Azure.IoT Build 46:91bd03862871 144
AzureIoTClient 42:289de245ba1d 145 g_continueRunning = true;
AzureIoTClient 18:e3e29fc771c9 146
AzureIoTClient 18:e3e29fc771c9 147 srand((unsigned int)time(NULL));
AzureIoTClient 18:e3e29fc771c9 148
AzureIoTClient 18:e3e29fc771c9 149 callbackCounter = 0;
AzureIoTClient 18:e3e29fc771c9 150
Azure.IoT Build 33:f8eb46ca453d 151 if (platform_init() != 0)
AzureIoTClient 18:e3e29fc771c9 152 {
Azure.IoT Build 33:f8eb46ca453d 153 printf("Failed to initialize the platform.\r\n");
AzureIoTClient 18:e3e29fc771c9 154 }
AzureIoTClient 18:e3e29fc771c9 155 else
AzureIoTClient 18:e3e29fc771c9 156 {
Azure.IoT Build 33:f8eb46ca453d 157 (void)printf("Starting the IoTHub client sample HTTP...\r\n");
AzureIoTClient 18:e3e29fc771c9 158
Azure.IoT Build 33:f8eb46ca453d 159 if ((iotHubClientHandle = IoTHubClient_LL_CreateFromConnectionString(connectionString, HTTP_Protocol)) == NULL)
AzureIoTClient 18:e3e29fc771c9 160 {
Azure.IoT Build 33:f8eb46ca453d 161 (void)printf("ERROR: iotHubClientHandle is NULL!\r\n");
AzureIoTClient 18:e3e29fc771c9 162 }
AzureIoTClient 18:e3e29fc771c9 163 else
AzureIoTClient 18:e3e29fc771c9 164 {
Azure.IoT Build 33:f8eb46ca453d 165 unsigned int timeout = 241000;
Azure.IoT Build 33:f8eb46ca453d 166 // Because it can poll "after 9 seconds" polls will happen effectively // at ~10 seconds.
Azure.IoT Build 33:f8eb46ca453d 167 // Note that for scalabilty, the default value of minimumPollingTime
Azure.IoT Build 33:f8eb46ca453d 168 // is 25 minutes. For more information, see:
Azure.IoT Build 33:f8eb46ca453d 169 // https://azure.microsoft.com/documentation/articles/iot-hub-devguide/#messaging
Azure.IoT Build 33:f8eb46ca453d 170 unsigned int minimumPollingTime = 9;
Azure.IoT Build 33:f8eb46ca453d 171 if (IoTHubClient_LL_SetOption(iotHubClientHandle, "timeout", &timeout) != IOTHUB_CLIENT_OK)
Azure.IoT Build 33:f8eb46ca453d 172 {
Azure.IoT Build 33:f8eb46ca453d 173 printf("failure to set option \"timeout\"\r\n");
Azure.IoT Build 33:f8eb46ca453d 174 }
AzureIoTClient 20:52f8298d7256 175
Azure.IoT Build 33:f8eb46ca453d 176 if (IoTHubClient_LL_SetOption(iotHubClientHandle, "MinimumPollingTime", &minimumPollingTime) != IOTHUB_CLIENT_OK)
AzureIoTClient 18:e3e29fc771c9 177 {
Azure.IoT Build 33:f8eb46ca453d 178 printf("failure to set option \"MinimumPollingTime\"\r\n");
Azure.IoT Build 33:f8eb46ca453d 179 }
Azure.IoT Build 33:f8eb46ca453d 180
Azure.IoT Build 33:f8eb46ca453d 181 #ifdef MBED_BUILD_TIMESTAMP
Azure.IoT Build 33:f8eb46ca453d 182 // For mbed add the certificate information
Azure.IoT Build 33:f8eb46ca453d 183 if (IoTHubClient_LL_SetOption(iotHubClientHandle, "TrustedCerts", certificates) != IOTHUB_CLIENT_OK)
Azure.IoT Build 33:f8eb46ca453d 184 {
Azure.IoT Build 33:f8eb46ca453d 185 printf("failure to set option \"TrustedCerts\"\r\n");
Azure.IoT Build 33:f8eb46ca453d 186 }
Azure.IoT Build 33:f8eb46ca453d 187 #endif // MBED_BUILD_TIMESTAMP
Azure.IoT Build 33:f8eb46ca453d 188
Azure.IoT Build 33:f8eb46ca453d 189 /* Setting Message call back, so we can receive Commands. */
Azure.IoT Build 33:f8eb46ca453d 190 if (IoTHubClient_LL_SetMessageCallback(iotHubClientHandle, ReceiveMessageCallback, &receiveContext) != IOTHUB_CLIENT_OK)
Azure.IoT Build 33:f8eb46ca453d 191 {
Azure.IoT Build 33:f8eb46ca453d 192 (void)printf("ERROR: IoTHubClient_LL_SetMessageCallback..........FAILED!\r\n");
Azure.IoT Build 33:f8eb46ca453d 193 }
Azure.IoT Build 33:f8eb46ca453d 194 else
Azure.IoT Build 33:f8eb46ca453d 195 {
Azure.IoT Build 33:f8eb46ca453d 196 (void)printf("IoTHubClient_LL_SetMessageCallback...successful.\r\n");
Azure.IoT Build 33:f8eb46ca453d 197
Azure.IoT Build 33:f8eb46ca453d 198 /* Now that we are ready to receive commands, let's send some messages */
AzureIoTClient 42:289de245ba1d 199 size_t iterator = 0;
AzureIoTClient 68:a8c0f61d8478 200 double temperature = 0;
AzureIoTClient 68:a8c0f61d8478 201 double humidity = 0;
AzureIoTClient 42:289de245ba1d 202 do
AzureIoTClient 18:e3e29fc771c9 203 {
AzureIoTClient 42:289de245ba1d 204 if (iterator < MESSAGE_COUNT)
AzureIoTClient 18:e3e29fc771c9 205 {
AzureIoTClient 68:a8c0f61d8478 206 temperature = minTemperature + (rand() % 10);
AzureIoTClient 68:a8c0f61d8478 207 humidity = minHumidity + (rand() % 20);
AzureIoTClient 68:a8c0f61d8478 208 sprintf_s(msgText, sizeof(msgText), "{\"deviceId\":\"myFirstDevice\",\"windSpeed\":%.2f,\"temperature\":%.2f,\"humidity\":%.2f}", avgWindSpeed + (rand() % 4 + 2), temperature, humidity);
AzureIoTClient 42:289de245ba1d 209 if ((messages[iterator].messageHandle = IoTHubMessage_CreateFromByteArray((const unsigned char*)msgText, strlen(msgText))) == NULL)
Azure.IoT Build 33:f8eb46ca453d 210 {
AzureIoTClient 42:289de245ba1d 211 (void)printf("ERROR: iotHubMessageHandle is NULL!\r\n");
Azure.IoT Build 33:f8eb46ca453d 212 }
Azure.IoT Build 33:f8eb46ca453d 213 else
Azure.IoT Build 33:f8eb46ca453d 214 {
AzureIoTClient 42:289de245ba1d 215 MAP_HANDLE propMap;
AzureIoTClient 42:289de245ba1d 216
AzureIoTClient 42:289de245ba1d 217 messages[iterator].messageTrackingId = iterator;
Azure.IoT Build 33:f8eb46ca453d 218
AzureIoTClient 42:289de245ba1d 219 propMap = IoTHubMessage_Properties(messages[iterator].messageHandle);
AzureIoTClient 68:a8c0f61d8478 220 (void)sprintf_s(propText, sizeof(propText), temperature > 28 ? "true" : "false");
AzureIoTClient 68:a8c0f61d8478 221 if (Map_AddOrUpdate(propMap, "temperatureAlert", propText) != MAP_OK)
AzureIoTClient 42:289de245ba1d 222 {
AzureIoTClient 42:289de245ba1d 223 (void)printf("ERROR: Map_AddOrUpdate Failed!\r\n");
AzureIoTClient 42:289de245ba1d 224 }
AzureIoTClient 18:e3e29fc771c9 225
AzureIoTClient 76:e9a30712b6d7 226 // TODO: re-enable after IoTHubClient nuget package has been released (ewertons)
AzureIoTClient 76:e9a30712b6d7 227 //(void)IoTHubMessage_SetContentTypeSystemProperty(messages[iterator].messageHandle, "application/json");
AzureIoTClient 76:e9a30712b6d7 228 //(void)IoTHubMessage_SetContentEncodingSystemProperty(messages[iterator].messageHandle, "utf-8");
AzureIoTClient 76:e9a30712b6d7 229
AzureIoTClient 42:289de245ba1d 230 if (IoTHubClient_LL_SendEventAsync(iotHubClientHandle, messages[iterator].messageHandle, SendConfirmationCallback, &messages[iterator]) != IOTHUB_CLIENT_OK)
AzureIoTClient 42:289de245ba1d 231 {
AzureIoTClient 42:289de245ba1d 232 (void)printf("ERROR: IoTHubClient_LL_SendEventAsync..........FAILED!\r\n");
AzureIoTClient 42:289de245ba1d 233 }
AzureIoTClient 42:289de245ba1d 234 else
AzureIoTClient 42:289de245ba1d 235 {
AzureIoTClient 49:2aa1b773af3c 236 (void)printf("IoTHubClient_LL_SendEventAsync accepted message [%zu] for transmission to IoT Hub.\r\n", iterator);
AzureIoTClient 49:2aa1b773af3c 237
AzureIoTClient 42:289de245ba1d 238 }
AzureIoTClient 42:289de245ba1d 239
AzureIoTClient 42:289de245ba1d 240 }
AzureIoTClient 42:289de245ba1d 241 }
AzureIoTClient 42:289de245ba1d 242 IoTHubClient_LL_DoWork(iotHubClientHandle);
AzureIoTClient 42:289de245ba1d 243 ThreadAPI_Sleep(1);
AzureIoTClient 42:289de245ba1d 244
AzureIoTClient 42:289de245ba1d 245 iterator++;
AzureIoTClient 42:289de245ba1d 246 } while (g_continueRunning);
Azure.IoT Build 46:91bd03862871 247
AzureIoTClient 48:07c7ca66634a 248 (void)printf("iothub_client_sample_http has gotten quit message, call DoWork %d more time to complete final sending...\r\n", DOWORK_LOOP_NUM);
Azure.IoT Build 46:91bd03862871 249 for (size_t index = 0; index < DOWORK_LOOP_NUM; index++)
Azure.IoT Build 46:91bd03862871 250 {
Azure.IoT Build 46:91bd03862871 251 IoTHubClient_LL_DoWork(iotHubClientHandle);
Azure.IoT Build 46:91bd03862871 252 ThreadAPI_Sleep(1);
Azure.IoT Build 46:91bd03862871 253 }
Azure.IoT Build 33:f8eb46ca453d 254 }
Azure.IoT Build 33:f8eb46ca453d 255 IoTHubClient_LL_Destroy(iotHubClientHandle);
AzureIoTClient 18:e3e29fc771c9 256 }
Azure.IoT Build 33:f8eb46ca453d 257 platform_deinit();
AzureIoTClient 18:e3e29fc771c9 258 }
AzureIoTClient 18:e3e29fc771c9 259 }
AzureIoTClient 42:289de245ba1d 260
AzureIoTClient 42:289de245ba1d 261 int main(void)
AzureIoTClient 42:289de245ba1d 262 {
AzureIoTClient 48:07c7ca66634a 263 iothub_client_sample_http_run();
AzureIoTClient 48:07c7ca66634a 264 return 0;
AzureIoTClient 42:289de245ba1d 265 }