[388] | 1 | // Copyright (c) Microsoft. All rights reserved.
|
---|
| 2 | // Licensed under the MIT license. See LICENSE file in the project root for full license information.
|
---|
| 3 |
|
---|
| 4 | #include <stdio.h>
|
---|
| 5 | #include <stdlib.h>
|
---|
| 6 |
|
---|
| 7 | /* This sample uses the _LL APIs of iothub_client for example purposes.
|
---|
| 8 | That does not mean that HTTP only works with the _LL APIs.
|
---|
| 9 | Simply changing the using the convenience layer (functions not having _LL)
|
---|
| 10 | and removing calls to _DoWork will yield the same results. */
|
---|
| 11 |
|
---|
| 12 | #include "azure_c_shared_utility/threadapi.h"
|
---|
| 13 | #include "azure_c_shared_utility/crt_abstractions.h"
|
---|
| 14 | #include "azure_c_shared_utility/platform.h"
|
---|
| 15 | #include "azure_c_shared_utility/shared_util_options.h"
|
---|
| 16 | #include "iothub_client_ll.h"
|
---|
| 17 | #include "iothub_message.h"
|
---|
| 18 | #include "iothubtransporthttp.h"
|
---|
| 19 | #include "iothubtransportmqtt_websockets.h"
|
---|
| 20 |
|
---|
| 21 | #ifdef _MSC_VER
|
---|
| 22 | extern int sprintf_s(char* dst, size_t dstSizeInBytes, const char* format, ...);
|
---|
| 23 | #endif // _MSC_VER
|
---|
| 24 |
|
---|
| 25 | #if 1//def MBED_BUILD_TIMESTAMP
|
---|
| 26 | #define SET_TRUSTED_CERT_IN_SAMPLES
|
---|
| 27 | #endif // MBED_BUILD_TIMESTAMP
|
---|
| 28 |
|
---|
| 29 | #ifdef SET_TRUSTED_CERT_IN_SAMPLES
|
---|
| 30 | #include "certs.h"
|
---|
| 31 | #endif // SET_TRUSTED_CERT_IN_SAMPLES
|
---|
| 32 |
|
---|
| 33 | /*String containing Hostname, Device Id & Device Key in the format: */
|
---|
| 34 | /* "HostName=<host_name>;DeviceId=<device_id>;SharedAccessKey=<device_key>" */
|
---|
| 35 | /* "HostName=<host_name>;DeviceId=<device_id>;SharedAccessSignature=<device_sas_token>" */
|
---|
| 36 | static const char* connectionString = "[device connection string]";
|
---|
| 37 |
|
---|
| 38 |
|
---|
| 39 | static int callbackCounter;
|
---|
| 40 | static bool g_continueRunning;
|
---|
| 41 | static char msgText[1024];
|
---|
| 42 | static char propText[1024];
|
---|
| 43 | #define MESSAGE_COUNT 5
|
---|
| 44 | #define DOWORK_LOOP_NUM 3
|
---|
| 45 |
|
---|
| 46 |
|
---|
| 47 | typedef struct EVENT_INSTANCE_TAG
|
---|
| 48 | {
|
---|
| 49 | IOTHUB_MESSAGE_HANDLE messageHandle;
|
---|
| 50 | size_t messageTrackingId; // For tracking the messages within the user callback.
|
---|
| 51 | } EVENT_INSTANCE;
|
---|
| 52 |
|
---|
| 53 | static IOTHUBMESSAGE_DISPOSITION_RESULT ReceiveMessageCallback(IOTHUB_MESSAGE_HANDLE message, void* userContextCallback)
|
---|
| 54 | {
|
---|
| 55 | int* counter = (int*)userContextCallback;
|
---|
| 56 | const char* buffer;
|
---|
| 57 | size_t size;
|
---|
| 58 | MAP_HANDLE mapProperties;
|
---|
| 59 | const char* messageId;
|
---|
| 60 | const char* correlationId;
|
---|
| 61 | const char* contentType;
|
---|
| 62 | const char* contentEncoding;
|
---|
| 63 |
|
---|
| 64 | // Message properties
|
---|
| 65 | if ((messageId = IoTHubMessage_GetMessageId(message)) == NULL)
|
---|
| 66 | {
|
---|
| 67 | messageId = "<null>";
|
---|
| 68 | }
|
---|
| 69 |
|
---|
| 70 | if ((correlationId = IoTHubMessage_GetCorrelationId(message)) == NULL)
|
---|
| 71 | {
|
---|
| 72 | correlationId = "<null>";
|
---|
| 73 | }
|
---|
| 74 |
|
---|
| 75 | if ((contentType = IoTHubMessage_GetContentTypeSystemProperty(message)) == NULL)
|
---|
| 76 | {
|
---|
| 77 | contentType = "<null>";
|
---|
| 78 | }
|
---|
| 79 |
|
---|
| 80 | if ((contentEncoding = IoTHubMessage_GetContentEncodingSystemProperty(message)) == NULL)
|
---|
| 81 | {
|
---|
| 82 | contentEncoding = "<null>";
|
---|
| 83 | }
|
---|
| 84 |
|
---|
| 85 | // Message content
|
---|
| 86 | if (IoTHubMessage_GetByteArray(message, (const unsigned char**)&buffer, &size) != IOTHUB_MESSAGE_OK)
|
---|
| 87 | {
|
---|
| 88 | printf("unable to retrieve the message data\r\n");
|
---|
| 89 | }
|
---|
| 90 | else
|
---|
| 91 | {
|
---|
| 92 | (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",
|
---|
| 93 | *counter, messageId, correlationId, contentType, contentEncoding, (int)size, buffer, (int)size);
|
---|
| 94 | // If we receive the work 'quit' then we stop running
|
---|
| 95 | if (size == (strlen("quit") * sizeof(char)) && memcmp(buffer, "quit", size) == 0)
|
---|
| 96 | {
|
---|
| 97 | g_continueRunning = false;
|
---|
| 98 | }
|
---|
| 99 | }
|
---|
| 100 |
|
---|
| 101 | // Retrieve properties from the message
|
---|
| 102 | mapProperties = IoTHubMessage_Properties(message);
|
---|
| 103 | if (mapProperties != NULL)
|
---|
| 104 | {
|
---|
| 105 | const char*const* keys;
|
---|
| 106 | const char*const* values;
|
---|
| 107 | size_t propertyCount = 0;
|
---|
| 108 | if (Map_GetInternals(mapProperties, &keys, &values, &propertyCount) == MAP_OK)
|
---|
| 109 | {
|
---|
| 110 | if (propertyCount > 0)
|
---|
| 111 | {
|
---|
| 112 | size_t index;
|
---|
| 113 |
|
---|
| 114 | printf(" Message Properties:\r\n");
|
---|
| 115 | for (index = 0; index < propertyCount; index++)
|
---|
| 116 | {
|
---|
| 117 | (void)printf("\tKey: %s Value: %s\r\n", keys[index], values[index]);
|
---|
| 118 | }
|
---|
| 119 | (void)printf("\r\n");
|
---|
| 120 | }
|
---|
| 121 | }
|
---|
| 122 | }
|
---|
| 123 |
|
---|
| 124 | /* Some device specific action code goes here... */
|
---|
| 125 | (*counter)++;
|
---|
| 126 | return IOTHUBMESSAGE_ACCEPTED;
|
---|
| 127 | }
|
---|
| 128 |
|
---|
| 129 | static void SendConfirmationCallback(IOTHUB_CLIENT_CONFIRMATION_RESULT result, void* userContextCallback)
|
---|
| 130 | {
|
---|
| 131 | EVENT_INSTANCE* eventInstance = (EVENT_INSTANCE*)userContextCallback;
|
---|
| 132 |
|
---|
| 133 | (void)printf("Confirmation[%d] received for message tracking id = %zu with result = %s\r\n", callbackCounter, eventInstance->messageTrackingId, MU_ENUM_TO_STRING(IOTHUB_CLIENT_CONFIRMATION_RESULT, result));
|
---|
| 134 |
|
---|
| 135 | /* Some device specific action code goes here... */
|
---|
| 136 | callbackCounter++;
|
---|
| 137 | IoTHubMessage_Destroy(eventInstance->messageHandle);
|
---|
| 138 | }
|
---|
| 139 |
|
---|
| 140 | void iothub_client_run(void)
|
---|
| 141 | {
|
---|
| 142 | IOTHUB_CLIENT_LL_HANDLE iotHubClientHandle;
|
---|
| 143 |
|
---|
| 144 | EVENT_INSTANCE messages[MESSAGE_COUNT];
|
---|
| 145 | double avgWindSpeed = 10.0;
|
---|
| 146 | double minTemperature = 20.0;
|
---|
| 147 | double minHumidity = 60.0;
|
---|
| 148 | int receiveContext = 0;
|
---|
| 149 |
|
---|
| 150 | g_continueRunning = true;
|
---|
| 151 |
|
---|
| 152 | srand((unsigned int)time(NULL));
|
---|
| 153 |
|
---|
| 154 | callbackCounter = 0;
|
---|
| 155 |
|
---|
| 156 | if (platform_init() != 0)
|
---|
| 157 | {
|
---|
| 158 | (void)printf("Failed to initialize the platform.\r\n");
|
---|
| 159 | }
|
---|
| 160 | else
|
---|
| 161 | {
|
---|
[390] | 162 | #if 1
|
---|
[388] | 163 | (void)printf("Starting the IoTHub client sample HTTP...\r\n");
|
---|
| 164 | IOTHUB_CLIENT_TRANSPORT_PROVIDER protocol = HTTP_Protocol;
|
---|
| 165 | #else
|
---|
| 166 | (void)printf("Starting the IoTHub client sample MQTT...\r\n");
|
---|
| 167 | IOTHUB_CLIENT_TRANSPORT_PROVIDER protocol = MQTT_WebSocket_Protocol;
|
---|
| 168 | #endif
|
---|
| 169 |
|
---|
| 170 | if ((iotHubClientHandle = IoTHubClient_LL_CreateFromConnectionString(connectionString, protocol)) == NULL)
|
---|
| 171 | {
|
---|
| 172 | (void)printf("ERROR: iotHubClientHandle is NULL!\r\n");
|
---|
| 173 | }
|
---|
| 174 | else
|
---|
| 175 | {
|
---|
| 176 | #if 0
|
---|
| 177 | HTTP_PROXY_OPTIONS proxy_options;
|
---|
| 178 | proxy_options.host_address = "proxy.example.com";
|
---|
| 179 | proxy_options.port = 8080;
|
---|
| 180 | proxy_options.username = NULL;
|
---|
| 181 | proxy_options.password = NULL;
|
---|
| 182 | if (IoTHubClient_LL_SetOption(iotHubClientHandle, OPTION_HTTP_PROXY, &proxy_options) != IOTHUB_CLIENT_OK)
|
---|
| 183 | {
|
---|
| 184 | printf("failure to set option \"HTTP Proxy\"\r\n");
|
---|
| 185 | }
|
---|
| 186 |
|
---|
| 187 | long curl_verbose = 1;
|
---|
| 188 | if (IoTHubClient_LL_SetOption(iotHubClientHandle, OPTION_CURL_VERBOSE, &curl_verbose) != IOTHUB_CLIENT_OK)
|
---|
| 189 | {
|
---|
| 190 | printf("failure to set option \"CURL Verbose\"\r\n");
|
---|
| 191 | }
|
---|
[393] | 192 |
|
---|
[388] | 193 | unsigned int timeout = 241000;
|
---|
| 194 | // Because it can poll "after 9 seconds" polls will happen effectively // at ~10 seconds.
|
---|
| 195 | // Note that for scalabilty, the default value of minimumPollingTime
|
---|
| 196 | // is 25 minutes. For more information, see:
|
---|
| 197 | // https://azure.microsoft.com/documentation/articles/iot-hub-devguide/#messaging
|
---|
| 198 | unsigned int minimumPollingTime = 9;
|
---|
| 199 | if (IoTHubClient_LL_SetOption(iotHubClientHandle, "timeout", &timeout) != IOTHUB_CLIENT_OK)
|
---|
| 200 | {
|
---|
| 201 | printf("failure to set option \"timeout\"\r\n");
|
---|
| 202 | }
|
---|
| 203 |
|
---|
| 204 | if (IoTHubClient_LL_SetOption(iotHubClientHandle, "MinimumPollingTime", &minimumPollingTime) != IOTHUB_CLIENT_OK)
|
---|
| 205 | {
|
---|
| 206 | printf("failure to set option \"MinimumPollingTime\"\r\n");
|
---|
| 207 | }
|
---|
[393] | 208 | #endif
|
---|
[388] | 209 | #ifdef SET_TRUSTED_CERT_IN_SAMPLES
|
---|
| 210 | // For mbed add the certificate information
|
---|
| 211 | if (IoTHubClient_LL_SetOption(iotHubClientHandle, OPTION_TRUSTED_CERT, certificates) != IOTHUB_CLIENT_OK)
|
---|
| 212 | {
|
---|
| 213 | printf("failure to set option \"TrustedCerts\"\r\n");
|
---|
| 214 | }
|
---|
| 215 | #endif // SET_TRUSTED_CERT_IN_SAMPLES
|
---|
| 216 | /* Setting Message call back, so we can receive Commands. */
|
---|
| 217 | if (IoTHubClient_LL_SetMessageCallback(iotHubClientHandle, ReceiveMessageCallback, &receiveContext) != IOTHUB_CLIENT_OK)
|
---|
| 218 | {
|
---|
| 219 | (void)printf("ERROR: IoTHubClient_LL_SetMessageCallback..........FAILED!\r\n");
|
---|
| 220 | }
|
---|
| 221 | else
|
---|
| 222 | {
|
---|
| 223 | (void)printf("IoTHubClient_LL_SetMessageCallback...successful.\r\n");
|
---|
| 224 |
|
---|
| 225 | /* Now that we are ready to receive commands, let's send some messages */
|
---|
| 226 | int iterator = 0;
|
---|
| 227 | double temperature = 0;
|
---|
| 228 | double humidity = 0;
|
---|
| 229 | do
|
---|
| 230 | {
|
---|
| 231 | //(void)printf("iterator: [%d], callbackCounter: [%d]. \r\n", iterator, callbackCounter);
|
---|
| 232 |
|
---|
| 233 | if (iterator < MESSAGE_COUNT && (iterator <= callbackCounter))
|
---|
| 234 | {
|
---|
| 235 | temperature = minTemperature + (rand() % 10);
|
---|
| 236 | humidity = minHumidity + (rand() % 20);
|
---|
[390] | 237 | sprintf_s(msgText, sizeof(msgText), "{\"windSpeed\":%.2f,\"temperature\":%.2f,\"humidity\":%.2f}", avgWindSpeed + (rand() % 4 + 2), temperature, humidity);
|
---|
[388] | 238 | if ((messages[iterator].messageHandle = IoTHubMessage_CreateFromByteArray((const unsigned char*)msgText, strlen(msgText))) == NULL)
|
---|
| 239 | {
|
---|
| 240 | (void)printf("ERROR: iotHubMessageHandle is NULL!\r\n");
|
---|
| 241 | }
|
---|
| 242 | else
|
---|
| 243 | {
|
---|
| 244 | MAP_HANDLE propMap;
|
---|
| 245 |
|
---|
| 246 | messages[iterator].messageTrackingId = iterator;
|
---|
| 247 |
|
---|
| 248 | propMap = IoTHubMessage_Properties(messages[iterator].messageHandle);
|
---|
| 249 | (void)sprintf_s(propText, sizeof(propText), temperature > 28 ? "true" : "false");
|
---|
| 250 | if (Map_AddOrUpdate(propMap, "temperatureAlert", propText) != MAP_OK)
|
---|
| 251 | {
|
---|
| 252 | (void)printf("ERROR: Map_AddOrUpdate Failed!\r\n");
|
---|
| 253 | }
|
---|
| 254 |
|
---|
| 255 | (void)IoTHubMessage_SetContentTypeSystemProperty(messages[iterator].messageHandle, "application/json");
|
---|
| 256 | (void)IoTHubMessage_SetContentEncodingSystemProperty(messages[iterator].messageHandle, "utf-8");
|
---|
| 257 |
|
---|
| 258 | if (IoTHubClient_LL_SendEventAsync(iotHubClientHandle, messages[iterator].messageHandle, SendConfirmationCallback, &messages[iterator]) != IOTHUB_CLIENT_OK)
|
---|
| 259 | {
|
---|
| 260 | (void)printf("ERROR: IoTHubClient_LL_SendEventAsync..........FAILED!\r\n");
|
---|
| 261 | }
|
---|
| 262 | else
|
---|
| 263 | {
|
---|
| 264 | (void)printf("IoTHubClient_LL_SendEventAsync accepted message [%d] for transmission to IoT Hub.\r\n", iterator);
|
---|
| 265 | }
|
---|
| 266 | }
|
---|
| 267 | }
|
---|
| 268 |
|
---|
| 269 | IoTHubClient_LL_DoWork(iotHubClientHandle);
|
---|
| 270 | ThreadAPI_Sleep(1);
|
---|
| 271 |
|
---|
| 272 | iterator++;
|
---|
| 273 |
|
---|
| 274 | if (callbackCounter >= MESSAGE_COUNT)
|
---|
| 275 | {
|
---|
| 276 | printf("exit\n");
|
---|
| 277 | break;
|
---|
| 278 | }
|
---|
| 279 | } while (g_continueRunning);
|
---|
| 280 |
|
---|
| 281 | (void)printf("iothub_client_sample_http has gotten quit message, call DoWork %d more time to complete final sending...\r\n", DOWORK_LOOP_NUM);
|
---|
| 282 | for (size_t index = 0; index < DOWORK_LOOP_NUM; index++)
|
---|
| 283 | {
|
---|
| 284 | IoTHubClient_LL_DoWork(iotHubClientHandle);
|
---|
| 285 | ThreadAPI_Sleep(1);
|
---|
| 286 | }
|
---|
| 287 | }
|
---|
| 288 | IoTHubClient_LL_Destroy(iotHubClientHandle);
|
---|
| 289 | }
|
---|
| 290 | platform_deinit();
|
---|
| 291 | }
|
---|
| 292 | }
|
---|
| 293 |
|
---|
| 294 | int iothub_client_main(int argc, char **argv)
|
---|
| 295 | {
|
---|
| 296 | iothub_client_run();
|
---|
| 297 | return 0;
|
---|
| 298 | }
|
---|