Azure IoT / iothub_mqtt_transport

Microsoft Azure IoTHub client MQTT transport

Dependents:   STM32F746_iothub_client_sample_mqtt FXOS8700CQ_To_Azure_IoT f767zi_mqtt FXOS8700CQ_To_Azure_IoT ... more

iothubtransportmqtt.c@4:e472f5ce3473, 2016-06-17 (annotated)

Committer:
AzureIoTClient
Date:
Fri Jun 17 17:02:32 2016 -0700
Revision:
4:e472f5ce3473
Parent:
3:40f482ed0be8
Child:
5:73603e7a6542
1.0.9

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Azure.IoT Build 0:5e72a75c31b8 1 // Copyright (c) Microsoft. All rights reserved.
Azure.IoT Build 0:5e72a75c31b8 2 // Licensed under the MIT license. See LICENSE file in the project root for full license information.
Azure.IoT Build 0:5e72a75c31b8 3
Azure.IoT Build 0:5e72a75c31b8 4 #include <stdlib.h>
Azure.IoT Build 0:5e72a75c31b8 5 #ifdef _CRTDBG_MAP_ALLOC
Azure.IoT Build 0:5e72a75c31b8 6 #include <crtdbg.h>
Azure.IoT Build 0:5e72a75c31b8 7 #endif
Azure.IoT Build 1:f2e563755d91 8 #include "azure_c_shared_utility/gballoc.h"
Azure.IoT Build 0:5e72a75c31b8 9
Azure.IoT Build 1:f2e563755d91 10 #include "azure_c_shared_utility/iot_logging.h"
Azure.IoT Build 1:f2e563755d91 11 #include "azure_c_shared_utility/strings.h"
Azure.IoT Build 1:f2e563755d91 12 #include "azure_c_shared_utility/doublylinkedlist.h"
Azure.IoT Build 1:f2e563755d91 13 #include "azure_c_shared_utility/crt_abstractions.h"
Azure.IoT Build 0:5e72a75c31b8 14
Azure.IoT Build 0:5e72a75c31b8 15 #include "iothub_client_ll.h"
Azure.IoT Build 0:5e72a75c31b8 16 #include "iothub_client_private.h"
Azure.IoT Build 0:5e72a75c31b8 17 #include "iothubtransportmqtt.h"
Azure.IoT Build 1:f2e563755d91 18 #include "azure_umqtt_c/mqtt_client.h"
Azure.IoT Build 1:f2e563755d91 19 #include "azure_c_shared_utility/sastoken.h"
Azure.IoT Build 1:f2e563755d91 20 #include "azure_c_shared_utility/tickcounter.h"
Azure.IoT Build 0:5e72a75c31b8 21
Azure.IoT Build 1:f2e563755d91 22 #include "azure_c_shared_utility/tlsio.h"
Azure.IoT Build 1:f2e563755d91 23 #include "azure_c_shared_utility/platform.h"
Azure.IoT Build 0:5e72a75c31b8 24
AzureIoTClient 2:9db4da50abaa 25 #include "azure_c_shared_utility/string_tokenizer.h"
Azure.IoT Build 0:5e72a75c31b8 26 #include "iothub_client_version.h"
Azure.IoT Build 0:5e72a75c31b8 27
Azure.IoT Build 0:5e72a75c31b8 28 #include <stdarg.h>
Azure.IoT Build 0:5e72a75c31b8 29 #include <stdio.h>
Azure.IoT Build 0:5e72a75c31b8 30
Azure.IoT Build 0:5e72a75c31b8 31 #define SAS_TOKEN_DEFAULT_LIFETIME 3600
AzureIoTClient 2:9db4da50abaa 32 #define SAS_REFRESH_MULTIPLIER .8
Azure.IoT Build 0:5e72a75c31b8 33 #define EPOCH_TIME_T_VALUE 0
Azure.IoT Build 1:f2e563755d91 34 #define DEFAULT_MQTT_KEEPALIVE 4*60 // 4 min
Azure.IoT Build 0:5e72a75c31b8 35 #define DEFAULT_PORT_NUMBER 8883
Azure.IoT Build 0:5e72a75c31b8 36 #define DEFAULT_TEMP_STRING_LEN 256
Azure.IoT Build 0:5e72a75c31b8 37 #define BUILD_CONFIG_USERNAME 24
Azure.IoT Build 0:5e72a75c31b8 38 #define EVENT_TOPIC_DEFAULT_LEN 27
Azure.IoT Build 0:5e72a75c31b8 39 #define SAS_TOKEN_DEFAULT_LEN 10
Azure.IoT Build 0:5e72a75c31b8 40 #define RESEND_TIMEOUT_VALUE_MIN 1*60
Azure.IoT Build 0:5e72a75c31b8 41 #define MAX_SEND_RECOUNT_LIMIT 2
AzureIoTClient 2:9db4da50abaa 42 #define DEFAULT_CONNECTION_INTERVAL 30
AzureIoTClient 2:9db4da50abaa 43 #define FAILED_CONN_BACKOFF_VALUE 5
AzureIoTClient 2:9db4da50abaa 44
AzureIoTClient 2:9db4da50abaa 45 static const char* DEVICE_MSG_TOPIC = "devices/%s/messages/devicebound/#";
AzureIoTClient 2:9db4da50abaa 46 static const char* DEVICE_DEVICE_TOPIC = "devices/%s/messages/events/";
AzureIoTClient 2:9db4da50abaa 47 static const char* PROPERTY_SEPARATOR = "&";
AzureIoTClient 2:9db4da50abaa 48
AzureIoTClient 2:9db4da50abaa 49 typedef struct SYSTEM_PROPERTY_INFO_TAG
AzureIoTClient 2:9db4da50abaa 50 {
AzureIoTClient 4:e472f5ce3473 51 const char* propName;
AzureIoTClient 4:e472f5ce3473 52 size_t propLength;
AzureIoTClient 2:9db4da50abaa 53 } SYSTEM_PROPERTY_INFO;
AzureIoTClient 2:9db4da50abaa 54
AzureIoTClient 2:9db4da50abaa 55 static SYSTEM_PROPERTY_INFO sysPropList[] = {
AzureIoTClient 4:e472f5ce3473 56 { "%24.exp", 7 },
AzureIoTClient 4:e472f5ce3473 57 { "%24.mid", 7 },
AzureIoTClient 4:e472f5ce3473 58 { "%24.uid", 7 },
AzureIoTClient 4:e472f5ce3473 59 { "%24.to", 6 },
AzureIoTClient 4:e472f5ce3473 60 { "%24.cid", 7 },
AzureIoTClient 4:e472f5ce3473 61 { "devices/", 8 },
AzureIoTClient 4:e472f5ce3473 62 { "iothub-operation", 16 },
AzureIoTClient 4:e472f5ce3473 63 { "iothub-ack", 10 }
AzureIoTClient 2:9db4da50abaa 64 };
Azure.IoT Build 0:5e72a75c31b8 65
AzureIoTClient 4:e472f5ce3473 66 static TICK_COUNTER_HANDLE g_msgTickCounter;
Azure.IoT Build 0:5e72a75c31b8 67
Azure.IoT Build 0:5e72a75c31b8 68 typedef struct MQTTTRANSPORT_HANDLE_DATA_TAG
Azure.IoT Build 0:5e72a75c31b8 69 {
AzureIoTClient 4:e472f5ce3473 70 STRING_HANDLE device_id;
AzureIoTClient 4:e472f5ce3473 71 STRING_HANDLE device_key;
AzureIoTClient 4:e472f5ce3473 72 STRING_HANDLE sasTokenSr;
AzureIoTClient 4:e472f5ce3473 73 STRING_HANDLE mqttEventTopic;
AzureIoTClient 4:e472f5ce3473 74 STRING_HANDLE mqttMessageTopic;
AzureIoTClient 4:e472f5ce3473 75 STRING_HANDLE hostAddress;
AzureIoTClient 4:e472f5ce3473 76 // The current mqtt iothub implementation requires that the hub name and the domain suffix be passed as the first of a series of segments
AzureIoTClient 4:e472f5ce3473 77 // passed through the username portion of the connection frame.
AzureIoTClient 4:e472f5ce3473 78 // The second segment will contain the device id. The two segments are delemited by a "/".
AzureIoTClient 4:e472f5ce3473 79 // The first segment can be a maximum 256 characters.
AzureIoTClient 4:e472f5ce3473 80 // The second segment can be a maximum 128 characters.
AzureIoTClient 4:e472f5ce3473 81 // With the / delimeter you have 384 chars (Plus a terminator of 0).
AzureIoTClient 4:e472f5ce3473 82 STRING_HANDLE configPassedThroughUsername;
AzureIoTClient 4:e472f5ce3473 83 int portNum;
AzureIoTClient 4:e472f5ce3473 84 MQTT_CLIENT_HANDLE mqttClient;
AzureIoTClient 4:e472f5ce3473 85 uint16_t packetId;
AzureIoTClient 4:e472f5ce3473 86 bool sasTokenFromUser;
AzureIoTClient 4:e472f5ce3473 87 bool isRegistered;
AzureIoTClient 4:e472f5ce3473 88 bool connected;
AzureIoTClient 4:e472f5ce3473 89 bool subscribed;
AzureIoTClient 4:e472f5ce3473 90 bool receiveMessages;
AzureIoTClient 4:e472f5ce3473 91 bool destroyCalled;
AzureIoTClient 4:e472f5ce3473 92 DLIST_ENTRY waitingForAck;
AzureIoTClient 4:e472f5ce3473 93 PDLIST_ENTRY waitingToSend;
AzureIoTClient 4:e472f5ce3473 94 IOTHUB_CLIENT_LL_HANDLE llClientHandle;
AzureIoTClient 4:e472f5ce3473 95 CONTROL_PACKET_TYPE currPacketState;
AzureIoTClient 4:e472f5ce3473 96 XIO_HANDLE xioTransport;
AzureIoTClient 4:e472f5ce3473 97 int keepAliveValue;
AzureIoTClient 4:e472f5ce3473 98 uint64_t mqtt_connect_time;
AzureIoTClient 4:e472f5ce3473 99 size_t connectFailCount;
AzureIoTClient 4:e472f5ce3473 100 uint64_t connectTick;
Azure.IoT Build 0:5e72a75c31b8 101 } MQTTTRANSPORT_HANDLE_DATA, *PMQTTTRANSPORT_HANDLE_DATA;
Azure.IoT Build 0:5e72a75c31b8 102
Azure.IoT Build 0:5e72a75c31b8 103 typedef struct MQTT_MESSAGE_DETAILS_LIST_TAG
Azure.IoT Build 0:5e72a75c31b8 104 {
AzureIoTClient 4:e472f5ce3473 105 uint64_t msgPublishTime;
AzureIoTClient 4:e472f5ce3473 106 size_t retryCount;
AzureIoTClient 4:e472f5ce3473 107 IOTHUB_MESSAGE_LIST* iotHubMessageEntry;
AzureIoTClient 4:e472f5ce3473 108 void* context;
AzureIoTClient 4:e472f5ce3473 109 uint16_t msgPacketId;
AzureIoTClient 4:e472f5ce3473 110 DLIST_ENTRY entry;
Azure.IoT Build 0:5e72a75c31b8 111 } MQTT_MESSAGE_DETAILS_LIST, *PMQTT_MESSAGE_DETAILS_LIST;
Azure.IoT Build 0:5e72a75c31b8 112
Azure.IoT Build 0:5e72a75c31b8 113 static void defaultPrintLogFunction(unsigned int options, char* format, ...)
Azure.IoT Build 0:5e72a75c31b8 114 {
AzureIoTClient 4:e472f5ce3473 115 va_list args;
AzureIoTClient 4:e472f5ce3473 116 va_start(args, format);
AzureIoTClient 4:e472f5ce3473 117 (void)vprintf(format, args);
AzureIoTClient 4:e472f5ce3473 118 va_end(args);
Azure.IoT Build 0:5e72a75c31b8 119
AzureIoTClient 4:e472f5ce3473 120 if (options & LOG_LINE)
AzureIoTClient 4:e472f5ce3473 121 {
AzureIoTClient 4:e472f5ce3473 122 (void)printf("\r\n");
AzureIoTClient 4:e472f5ce3473 123 }
Azure.IoT Build 0:5e72a75c31b8 124 }
Azure.IoT Build 0:5e72a75c31b8 125
Azure.IoT Build 0:5e72a75c31b8 126 static void sendMsgComplete(IOTHUB_MESSAGE_LIST* iothubMsgList, PMQTTTRANSPORT_HANDLE_DATA transportState, IOTHUB_BATCHSTATE_RESULT batchResult)
Azure.IoT Build 0:5e72a75c31b8 127 {
AzureIoTClient 4:e472f5ce3473 128 DLIST_ENTRY messageCompleted;
AzureIoTClient 4:e472f5ce3473 129 DList_InitializeListHead(&messageCompleted);
AzureIoTClient 4:e472f5ce3473 130 DList_InsertTailList(&messageCompleted, &(iothubMsgList->entry));
AzureIoTClient 4:e472f5ce3473 131 IoTHubClient_LL_SendComplete(transportState->llClientHandle, &messageCompleted, batchResult);
Azure.IoT Build 0:5e72a75c31b8 132 }
Azure.IoT Build 0:5e72a75c31b8 133
AzureIoTClient 2:9db4da50abaa 134 static STRING_HANDLE addPropertiesTouMqttMessage(IOTHUB_MESSAGE_HANDLE iothub_message_handle, const char* eventTopic)
AzureIoTClient 2:9db4da50abaa 135 {
AzureIoTClient 4:e472f5ce3473 136 STRING_HANDLE result = STRING_construct(eventTopic);
AzureIoTClient 4:e472f5ce3473 137 const char* const* propertyKeys;
AzureIoTClient 4:e472f5ce3473 138 const char* const* propertyValues;
AzureIoTClient 4:e472f5ce3473 139 size_t propertyCount;
AzureIoTClient 2:9db4da50abaa 140
AzureIoTClient 4:e472f5ce3473 141 // Construct Properties
AzureIoTClient 4:e472f5ce3473 142 MAP_HANDLE properties_map = IoTHubMessage_Properties(iothub_message_handle);
AzureIoTClient 4:e472f5ce3473 143 if (properties_map != NULL)
AzureIoTClient 4:e472f5ce3473 144 {
AzureIoTClient 4:e472f5ce3473 145 if (Map_GetInternals(properties_map, &propertyKeys, &propertyValues, &propertyCount) != MAP_OK)
AzureIoTClient 4:e472f5ce3473 146 {
AzureIoTClient 4:e472f5ce3473 147 LogError("Failed to get the internals of the property map.");
AzureIoTClient 4:e472f5ce3473 148 STRING_delete(result);
AzureIoTClient 4:e472f5ce3473 149 result = NULL;
AzureIoTClient 4:e472f5ce3473 150 }
AzureIoTClient 4:e472f5ce3473 151 else
AzureIoTClient 4:e472f5ce3473 152 {
AzureIoTClient 4:e472f5ce3473 153 if (propertyCount != 0)
AzureIoTClient 4:e472f5ce3473 154 {
AzureIoTClient 4:e472f5ce3473 155 for (size_t index = 0; index < propertyCount && result != NULL; index++)
AzureIoTClient 4:e472f5ce3473 156 {
AzureIoTClient 4:e472f5ce3473 157 size_t len = strlen(propertyKeys[index]) + strlen(propertyValues[index]) + 2;
AzureIoTClient 4:e472f5ce3473 158 char* propValues = malloc(len+1);
AzureIoTClient 4:e472f5ce3473 159 if (propValues == NULL)
AzureIoTClient 4:e472f5ce3473 160 {
AzureIoTClient 4:e472f5ce3473 161 STRING_delete(result);
AzureIoTClient 4:e472f5ce3473 162 result = NULL;
AzureIoTClient 4:e472f5ce3473 163 }
AzureIoTClient 4:e472f5ce3473 164 else
AzureIoTClient 4:e472f5ce3473 165 {
AzureIoTClient 4:e472f5ce3473 166 sprintf(propValues, "%s=%s%s", propertyKeys[index], propertyValues[index], propertyCount - 1 == index ? "" : "&");
AzureIoTClient 4:e472f5ce3473 167 if (STRING_concat(result, propValues) != 0)
AzureIoTClient 4:e472f5ce3473 168 {
AzureIoTClient 4:e472f5ce3473 169 STRING_delete(result);
AzureIoTClient 4:e472f5ce3473 170 result = NULL;
AzureIoTClient 4:e472f5ce3473 171 }
AzureIoTClient 4:e472f5ce3473 172 free(propValues);
AzureIoTClient 4:e472f5ce3473 173 }
AzureIoTClient 4:e472f5ce3473 174 }
AzureIoTClient 4:e472f5ce3473 175 }
AzureIoTClient 4:e472f5ce3473 176 }
AzureIoTClient 4:e472f5ce3473 177 }
AzureIoTClient 4:e472f5ce3473 178 return result;
AzureIoTClient 2:9db4da50abaa 179 }
AzureIoTClient 2:9db4da50abaa 180
Azure.IoT Build 0:5e72a75c31b8 181 static int publishMqttMessage(PMQTTTRANSPORT_HANDLE_DATA transportState, MQTT_MESSAGE_DETAILS_LIST* mqttMsgEntry, const unsigned char* payload, size_t len)
Azure.IoT Build 0:5e72a75c31b8 182 {
AzureIoTClient 4:e472f5ce3473 183 int result;
AzureIoTClient 4:e472f5ce3473 184 STRING_HANDLE msgTopic = addPropertiesTouMqttMessage(mqttMsgEntry->iotHubMessageEntry->messageHandle, STRING_c_str(transportState->mqttEventTopic));
AzureIoTClient 4:e472f5ce3473 185 if (msgTopic == NULL)
AzureIoTClient 4:e472f5ce3473 186 {
AzureIoTClient 4:e472f5ce3473 187 result = __LINE__;
AzureIoTClient 4:e472f5ce3473 188 }
AzureIoTClient 4:e472f5ce3473 189 else
AzureIoTClient 4:e472f5ce3473 190 {
AzureIoTClient 4:e472f5ce3473 191 MQTT_MESSAGE_HANDLE mqttMsg = mqttmessage_create(transportState->packetId++, STRING_c_str(msgTopic), DELIVER_AT_LEAST_ONCE, payload, len);
AzureIoTClient 4:e472f5ce3473 192 if (mqttMsg == NULL)
AzureIoTClient 4:e472f5ce3473 193 {
AzureIoTClient 4:e472f5ce3473 194 result = __LINE__;
AzureIoTClient 4:e472f5ce3473 195 }
AzureIoTClient 4:e472f5ce3473 196 else
AzureIoTClient 4:e472f5ce3473 197 {
AzureIoTClient 4:e472f5ce3473 198 if (mqtt_client_publish(transportState->mqttClient, mqttMsg) != 0)
AzureIoTClient 4:e472f5ce3473 199 {
AzureIoTClient 4:e472f5ce3473 200 result = __LINE__;
AzureIoTClient 4:e472f5ce3473 201 }
AzureIoTClient 4:e472f5ce3473 202 else
AzureIoTClient 4:e472f5ce3473 203 {
AzureIoTClient 4:e472f5ce3473 204 mqttMsgEntry->retryCount++;
AzureIoTClient 4:e472f5ce3473 205 (void)tickcounter_get_current_ms(g_msgTickCounter, &mqttMsgEntry->msgPublishTime);
AzureIoTClient 4:e472f5ce3473 206 result = 0;
AzureIoTClient 4:e472f5ce3473 207 }
AzureIoTClient 4:e472f5ce3473 208 mqttmessage_destroy(mqttMsg);
AzureIoTClient 4:e472f5ce3473 209 }
AzureIoTClient 4:e472f5ce3473 210 STRING_delete(msgTopic);
AzureIoTClient 4:e472f5ce3473 211 }
AzureIoTClient 4:e472f5ce3473 212 return result;
AzureIoTClient 3:40f482ed0be8 213 }
AzureIoTClient 3:40f482ed0be8 214
AzureIoTClient 3:40f482ed0be8 215 static bool isSystemProperty(const char* tokenData)
AzureIoTClient 3:40f482ed0be8 216 {
AzureIoTClient 4:e472f5ce3473 217 bool result = false;
AzureIoTClient 4:e472f5ce3473 218 size_t propCount = sizeof(sysPropList)/sizeof(sysPropList[0]);
AzureIoTClient 4:e472f5ce3473 219 for (size_t index = 0; index < propCount; index++)
AzureIoTClient 4:e472f5ce3473 220 {
AzureIoTClient 4:e472f5ce3473 221 if (memcmp(tokenData, sysPropList[index].propName, sysPropList[index].propLength) == 0)
AzureIoTClient 4:e472f5ce3473 222 {
AzureIoTClient 4:e472f5ce3473 223 result = true;
AzureIoTClient 4:e472f5ce3473 224 break;
AzureIoTClient 4:e472f5ce3473 225 }
AzureIoTClient 4:e472f5ce3473 226 }
AzureIoTClient 4:e472f5ce3473 227 return result;
AzureIoTClient 3:40f482ed0be8 228 }
AzureIoTClient 3:40f482ed0be8 229
AzureIoTClient 3:40f482ed0be8 230 static int extractMqttProperties(IOTHUB_MESSAGE_HANDLE IoTHubMessage, MQTT_MESSAGE_HANDLE msgHandle)
AzureIoTClient 3:40f482ed0be8 231 {
AzureIoTClient 4:e472f5ce3473 232 int result;
AzureIoTClient 4:e472f5ce3473 233 STRING_HANDLE mqttTopic = STRING_construct(mqttmessage_getTopicName(msgHandle));
AzureIoTClient 3:40f482ed0be8 234
AzureIoTClient 4:e472f5ce3473 235 STRING_TOKENIZER_HANDLE token = STRING_TOKENIZER_create(mqttTopic);
AzureIoTClient 4:e472f5ce3473 236 if (token != NULL)
AzureIoTClient 4:e472f5ce3473 237 {
AzureIoTClient 4:e472f5ce3473 238 MAP_HANDLE propertyMap = IoTHubMessage_Properties(IoTHubMessage);
AzureIoTClient 4:e472f5ce3473 239 if (propertyMap == NULL)
AzureIoTClient 4:e472f5ce3473 240 {
AzureIoTClient 4:e472f5ce3473 241 LogError("Failure to retrieve IoTHubMessage_properties.");
AzureIoTClient 4:e472f5ce3473 242 result = __LINE__;
AzureIoTClient 4:e472f5ce3473 243 }
AzureIoTClient 4:e472f5ce3473 244 else
AzureIoTClient 4:e472f5ce3473 245 {
AzureIoTClient 4:e472f5ce3473 246 STRING_HANDLE output = STRING_new();
AzureIoTClient 4:e472f5ce3473 247 if (output == NULL)
AzureIoTClient 4:e472f5ce3473 248 {
AzureIoTClient 4:e472f5ce3473 249 LogError("Failure to allocate STRING_new.");
AzureIoTClient 4:e472f5ce3473 250 result = __LINE__;
AzureIoTClient 4:e472f5ce3473 251 }
AzureIoTClient 4:e472f5ce3473 252 else
AzureIoTClient 4:e472f5ce3473 253 {
AzureIoTClient 4:e472f5ce3473 254 result = 0;
AzureIoTClient 4:e472f5ce3473 255 while (STRING_TOKENIZER_get_next_token(token, output, PROPERTY_SEPARATOR) == 0 && result == 0)
AzureIoTClient 4:e472f5ce3473 256 {
AzureIoTClient 4:e472f5ce3473 257 const char* tokenData = STRING_c_str(output);
AzureIoTClient 4:e472f5ce3473 258 size_t tokenLen = strlen(tokenData);
AzureIoTClient 4:e472f5ce3473 259 if (tokenData == NULL || tokenLen == 0)
AzureIoTClient 4:e472f5ce3473 260 {
AzureIoTClient 4:e472f5ce3473 261 break;
AzureIoTClient 4:e472f5ce3473 262 }
AzureIoTClient 4:e472f5ce3473 263 else
AzureIoTClient 4:e472f5ce3473 264 {
AzureIoTClient 4:e472f5ce3473 265 if (!isSystemProperty(tokenData) )
AzureIoTClient 4:e472f5ce3473 266 {
AzureIoTClient 4:e472f5ce3473 267 const char* iterator = tokenData;
AzureIoTClient 4:e472f5ce3473 268 while (iterator != NULL && *iterator != '\0' && result == 0)
AzureIoTClient 4:e472f5ce3473 269 {
AzureIoTClient 4:e472f5ce3473 270 if (*iterator == '=')
AzureIoTClient 4:e472f5ce3473 271 {
AzureIoTClient 4:e472f5ce3473 272 size_t nameLen = iterator - tokenData;
AzureIoTClient 4:e472f5ce3473 273 char* propName = malloc(nameLen + 1);
AzureIoTClient 3:40f482ed0be8 274
AzureIoTClient 4:e472f5ce3473 275 size_t valLen = tokenLen - (nameLen + 1) + 1;
AzureIoTClient 4:e472f5ce3473 276 char* propValue = malloc(valLen + 1);
AzureIoTClient 3:40f482ed0be8 277
AzureIoTClient 4:e472f5ce3473 278 if (propName == NULL || propValue == NULL)
AzureIoTClient 4:e472f5ce3473 279 {
AzureIoTClient 4:e472f5ce3473 280 result = __LINE__;
AzureIoTClient 4:e472f5ce3473 281 }
AzureIoTClient 4:e472f5ce3473 282 else
AzureIoTClient 4:e472f5ce3473 283 {
AzureIoTClient 4:e472f5ce3473 284 strncpy(propName, tokenData, nameLen);
AzureIoTClient 4:e472f5ce3473 285 propName[nameLen] = '\0';
AzureIoTClient 3:40f482ed0be8 286
AzureIoTClient 4:e472f5ce3473 287 strncpy(propValue, iterator + 1, valLen);
AzureIoTClient 4:e472f5ce3473 288 propValue[valLen] = '\0';
AzureIoTClient 3:40f482ed0be8 289
AzureIoTClient 4:e472f5ce3473 290 if (Map_AddOrUpdate(propertyMap, propName, propValue) != MAP_OK)
AzureIoTClient 4:e472f5ce3473 291 {
AzureIoTClient 4:e472f5ce3473 292 LogError("Map_AddOrUpdate failed.");
AzureIoTClient 4:e472f5ce3473 293 result = __LINE__;
AzureIoTClient 4:e472f5ce3473 294 }
AzureIoTClient 4:e472f5ce3473 295 }
AzureIoTClient 4:e472f5ce3473 296 free(propName);
AzureIoTClient 4:e472f5ce3473 297 free(propValue);
AzureIoTClient 3:40f482ed0be8 298
AzureIoTClient 4:e472f5ce3473 299 break;
AzureIoTClient 4:e472f5ce3473 300 }
AzureIoTClient 4:e472f5ce3473 301 iterator++;
AzureIoTClient 4:e472f5ce3473 302 }
AzureIoTClient 4:e472f5ce3473 303 }
AzureIoTClient 4:e472f5ce3473 304 }
AzureIoTClient 4:e472f5ce3473 305 }
AzureIoTClient 4:e472f5ce3473 306 STRING_delete(output);
AzureIoTClient 4:e472f5ce3473 307 }
AzureIoTClient 4:e472f5ce3473 308 }
AzureIoTClient 4:e472f5ce3473 309 STRING_TOKENIZER_destroy(token);
AzureIoTClient 4:e472f5ce3473 310 }
AzureIoTClient 4:e472f5ce3473 311 else
AzureIoTClient 4:e472f5ce3473 312 {
AzureIoTClient 4:e472f5ce3473 313 LogError("Unable to create Tokenizer object.");
AzureIoTClient 4:e472f5ce3473 314 result = __LINE__;
AzureIoTClient 4:e472f5ce3473 315 }
AzureIoTClient 4:e472f5ce3473 316 STRING_delete(mqttTopic);
AzureIoTClient 3:40f482ed0be8 317
AzureIoTClient 4:e472f5ce3473 318 return result;
AzureIoTClient 3:40f482ed0be8 319 }
AzureIoTClient 3:40f482ed0be8 320
AzureIoTClient 3:40f482ed0be8 321 static void MqttRecvCallback(MQTT_MESSAGE_HANDLE msgHandle, void* callbackCtx)
AzureIoTClient 3:40f482ed0be8 322 {
AzureIoTClient 4:e472f5ce3473 323 if (msgHandle != NULL && callbackCtx != NULL)
AzureIoTClient 4:e472f5ce3473 324 {
AzureIoTClient 4:e472f5ce3473 325 const APP_PAYLOAD* appPayload = mqttmessage_getApplicationMsg(msgHandle);
AzureIoTClient 4:e472f5ce3473 326 IOTHUB_MESSAGE_HANDLE IoTHubMessage = IoTHubMessage_CreateFromByteArray(appPayload->message, appPayload->length);
AzureIoTClient 4:e472f5ce3473 327 if (IoTHubMessage == NULL)
AzureIoTClient 4:e472f5ce3473 328 {
AzureIoTClient 4:e472f5ce3473 329 LogError("IotHub Message creation has failed.");
AzureIoTClient 4:e472f5ce3473 330 }
AzureIoTClient 4:e472f5ce3473 331 else
AzureIoTClient 4:e472f5ce3473 332 {
AzureIoTClient 4:e472f5ce3473 333 // Will need to update this when the service has messages that can be rejected
AzureIoTClient 4:e472f5ce3473 334 (void)extractMqttProperties(IoTHubMessage, msgHandle);
AzureIoTClient 4:e472f5ce3473 335 PMQTTTRANSPORT_HANDLE_DATA transportData = (PMQTTTRANSPORT_HANDLE_DATA)callbackCtx;
AzureIoTClient 4:e472f5ce3473 336 if (IoTHubClient_LL_MessageCallback(transportData->llClientHandle, IoTHubMessage) != IOTHUBMESSAGE_ACCEPTED)
AzureIoTClient 4:e472f5ce3473 337 {
AzureIoTClient 4:e472f5ce3473 338 LogError("Event not accepted by our client.");
AzureIoTClient 4:e472f5ce3473 339 }
AzureIoTClient 4:e472f5ce3473 340 IoTHubMessage_Destroy(IoTHubMessage);
AzureIoTClient 4:e472f5ce3473 341 }
AzureIoTClient 4:e472f5ce3473 342 }
AzureIoTClient 3:40f482ed0be8 343 }
AzureIoTClient 3:40f482ed0be8 344
AzureIoTClient 3:40f482ed0be8 345 static void MqttOpCompleteCallback(MQTT_CLIENT_HANDLE handle, MQTT_CLIENT_EVENT_RESULT actionResult, const void* msgInfo, void* callbackCtx)
AzureIoTClient 3:40f482ed0be8 346 {
AzureIoTClient 4:e472f5ce3473 347 (void)handle;
AzureIoTClient 4:e472f5ce3473 348 if (callbackCtx != NULL)
AzureIoTClient 4:e472f5ce3473 349 {
AzureIoTClient 4:e472f5ce3473 350 PMQTTTRANSPORT_HANDLE_DATA transportData = (PMQTTTRANSPORT_HANDLE_DATA)callbackCtx;
AzureIoTClient 3:40f482ed0be8 351
AzureIoTClient 4:e472f5ce3473 352 switch (actionResult)
AzureIoTClient 4:e472f5ce3473 353 {
AzureIoTClient 4:e472f5ce3473 354 case MQTT_CLIENT_ON_PUBLISH_ACK:
AzureIoTClient 4:e472f5ce3473 355 case MQTT_CLIENT_ON_PUBLISH_COMP:
AzureIoTClient 4:e472f5ce3473 356 {
AzureIoTClient 4:e472f5ce3473 357 const PUBLISH_ACK* puback = (const PUBLISH_ACK*)msgInfo;
AzureIoTClient 4:e472f5ce3473 358 if (puback != NULL)
AzureIoTClient 4:e472f5ce3473 359 {
AzureIoTClient 4:e472f5ce3473 360 PDLIST_ENTRY currentListEntry = transportData->waitingForAck.Flink;
AzureIoTClient 4:e472f5ce3473 361 while (currentListEntry != &transportData->waitingForAck)
AzureIoTClient 4:e472f5ce3473 362 {
AzureIoTClient 4:e472f5ce3473 363 MQTT_MESSAGE_DETAILS_LIST* mqttMsgEntry = containingRecord(currentListEntry, MQTT_MESSAGE_DETAILS_LIST, entry);
AzureIoTClient 4:e472f5ce3473 364 DLIST_ENTRY saveListEntry;
AzureIoTClient 4:e472f5ce3473 365 saveListEntry.Flink = currentListEntry->Flink;
AzureIoTClient 3:40f482ed0be8 366
AzureIoTClient 4:e472f5ce3473 367 if (puback->packetId == mqttMsgEntry->msgPacketId)
AzureIoTClient 4:e472f5ce3473 368 {
AzureIoTClient 4:e472f5ce3473 369 (void)DList_RemoveEntryList(currentListEntry); //First remove the item from Waiting for Ack List.
AzureIoTClient 4:e472f5ce3473 370 sendMsgComplete(mqttMsgEntry->iotHubMessageEntry, transportData, IOTHUB_BATCHSTATE_SUCCESS);
AzureIoTClient 4:e472f5ce3473 371 free(mqttMsgEntry);
AzureIoTClient 4:e472f5ce3473 372 }
AzureIoTClient 4:e472f5ce3473 373 currentListEntry = saveListEntry.Flink;
AzureIoTClient 4:e472f5ce3473 374 }
AzureIoTClient 4:e472f5ce3473 375 }
AzureIoTClient 4:e472f5ce3473 376 break;
AzureIoTClient 4:e472f5ce3473 377 }
AzureIoTClient 4:e472f5ce3473 378 case MQTT_CLIENT_ON_CONNACK:
AzureIoTClient 4:e472f5ce3473 379 {
AzureIoTClient 4:e472f5ce3473 380 const CONNECT_ACK* connack = (const CONNECT_ACK*)msgInfo;
AzureIoTClient 4:e472f5ce3473 381 if (connack != NULL)
AzureIoTClient 4:e472f5ce3473 382 {
AzureIoTClient 4:e472f5ce3473 383 if (connack->returnCode == CONNECTION_ACCEPTED)
AzureIoTClient 4:e472f5ce3473 384 {
AzureIoTClient 4:e472f5ce3473 385 // The connect packet has been acked
AzureIoTClient 4:e472f5ce3473 386 transportData->currPacketState = CONNACK_TYPE;
AzureIoTClient 4:e472f5ce3473 387 }
AzureIoTClient 4:e472f5ce3473 388 else
AzureIoTClient 4:e472f5ce3473 389 {
AzureIoTClient 4:e472f5ce3473 390 LogError("Connection not accepted, return code: %d.", connack->returnCode);
AzureIoTClient 4:e472f5ce3473 391 (void)mqtt_client_disconnect(transportData->mqttClient);
AzureIoTClient 4:e472f5ce3473 392 transportData->connected = false;
AzureIoTClient 4:e472f5ce3473 393 transportData->currPacketState = PACKET_TYPE_ERROR;
AzureIoTClient 4:e472f5ce3473 394 }
AzureIoTClient 4:e472f5ce3473 395 }
AzureIoTClient 4:e472f5ce3473 396 else
AzureIoTClient 4:e472f5ce3473 397 {
AzureIoTClient 4:e472f5ce3473 398 LogError("MQTT_CLIENT_ON_CONNACK CONNACK parameter is NULL.");
AzureIoTClient 4:e472f5ce3473 399 }
AzureIoTClient 4:e472f5ce3473 400 break;
AzureIoTClient 4:e472f5ce3473 401 }
AzureIoTClient 4:e472f5ce3473 402 case MQTT_CLIENT_ON_SUBSCRIBE_ACK:
AzureIoTClient 4:e472f5ce3473 403 {
AzureIoTClient 4:e472f5ce3473 404 const SUBSCRIBE_ACK* suback = (const SUBSCRIBE_ACK*)msgInfo;
AzureIoTClient 4:e472f5ce3473 405 if (suback != NULL)
AzureIoTClient 4:e472f5ce3473 406 {
AzureIoTClient 4:e472f5ce3473 407 if (suback->qosCount == 1)
AzureIoTClient 4:e472f5ce3473 408 {
AzureIoTClient 4:e472f5ce3473 409 // The connect packet has been acked
AzureIoTClient 4:e472f5ce3473 410 transportData->currPacketState = SUBACK_TYPE;
AzureIoTClient 4:e472f5ce3473 411 }
AzureIoTClient 4:e472f5ce3473 412 else
AzureIoTClient 4:e472f5ce3473 413 {
AzureIoTClient 4:e472f5ce3473 414 LogError("QOS count was not expected: %d.", (int)suback->qosCount);
AzureIoTClient 4:e472f5ce3473 415 }
AzureIoTClient 4:e472f5ce3473 416 }
AzureIoTClient 4:e472f5ce3473 417 break;
AzureIoTClient 4:e472f5ce3473 418 }
AzureIoTClient 4:e472f5ce3473 419 case MQTT_CLIENT_ON_PUBLISH_RECV:
AzureIoTClient 4:e472f5ce3473 420 case MQTT_CLIENT_ON_PUBLISH_REL:
AzureIoTClient 4:e472f5ce3473 421 {
AzureIoTClient 4:e472f5ce3473 422 // Currently not used
AzureIoTClient 4:e472f5ce3473 423 break;
AzureIoTClient 4:e472f5ce3473 424 }
AzureIoTClient 4:e472f5ce3473 425 case MQTT_CLIENT_ON_DISCONNECT:
AzureIoTClient 4:e472f5ce3473 426 {
AzureIoTClient 4:e472f5ce3473 427 // Close the client so we can reconnect again
AzureIoTClient 4:e472f5ce3473 428 transportData->connected = false;
AzureIoTClient 4:e472f5ce3473 429 transportData->currPacketState = DISCONNECT_TYPE;
AzureIoTClient 4:e472f5ce3473 430 break;
AzureIoTClient 4:e472f5ce3473 431 }
AzureIoTClient 4:e472f5ce3473 432 case MQTT_CLIENT_NO_PING_RESPONSE:
AzureIoTClient 4:e472f5ce3473 433 LogError("Mqtt Ping Response was not encountered. Reconnecting device...");
AzureIoTClient 4:e472f5ce3473 434 case MQTT_CLIENT_ON_ERROR:
AzureIoTClient 4:e472f5ce3473 435 {
AzureIoTClient 4:e472f5ce3473 436 xio_close(transportData->xioTransport, NULL, NULL);
AzureIoTClient 4:e472f5ce3473 437 transportData->connected = false;
AzureIoTClient 4:e472f5ce3473 438 transportData->subscribed = false;
AzureIoTClient 4:e472f5ce3473 439 transportData->currPacketState = PACKET_TYPE_ERROR;
AzureIoTClient 4:e472f5ce3473 440 }
AzureIoTClient 4:e472f5ce3473 441 }
AzureIoTClient 4:e472f5ce3473 442 }
AzureIoTClient 3:40f482ed0be8 443 }
AzureIoTClient 3:40f482ed0be8 444
AzureIoTClient 3:40f482ed0be8 445 const XIO_HANDLE getIoTransportProvider(const char* fqdn, int port)
AzureIoTClient 3:40f482ed0be8 446 {
AzureIoTClient 4:e472f5ce3473 447 TLSIO_CONFIG tls_io_config = { fqdn, port };
AzureIoTClient 4:e472f5ce3473 448 const IO_INTERFACE_DESCRIPTION* io_interface_description = platform_get_default_tlsio();
AzureIoTClient 4:e472f5ce3473 449 return (void*)xio_create(io_interface_description, &tls_io_config, NULL/*defaultPrintLogFunction*/);
AzureIoTClient 3:40f482ed0be8 450 }
AzureIoTClient 3:40f482ed0be8 451
AzureIoTClient 3:40f482ed0be8 452 static int SubscribeToMqttProtocol(PMQTTTRANSPORT_HANDLE_DATA transportState)
AzureIoTClient 3:40f482ed0be8 453 {
AzureIoTClient 4:e472f5ce3473 454 int result;
AzureIoTClient 3:40f482ed0be8 455
AzureIoTClient 4:e472f5ce3473 456 if (transportState->receiveMessages && !transportState->subscribed)
AzureIoTClient 4:e472f5ce3473 457 {
AzureIoTClient 4:e472f5ce3473 458 SUBSCRIBE_PAYLOAD subscribe[] = {
AzureIoTClient 4:e472f5ce3473 459 { STRING_c_str(transportState->mqttMessageTopic), DELIVER_AT_LEAST_ONCE }
AzureIoTClient 4:e472f5ce3473 460 };
AzureIoTClient 4:e472f5ce3473 461 /* Codes_SRS_IOTHUB_MQTT_TRANSPORT_07_016: [IoTHubTransportMqtt_Subscribe shall call mqtt_client_subscribe to subscribe to the Message Topic.] */
AzureIoTClient 4:e472f5ce3473 462 if (mqtt_client_subscribe(transportState->mqttClient, transportState->packetId++, subscribe, 1) != 0)
AzureIoTClient 4:e472f5ce3473 463 {
AzureIoTClient 4:e472f5ce3473 464 /* Codes_SRS_IOTHUB_MQTT_TRANSPORT_07_017: [Upon failure IoTHubTransportMqtt_Subscribe shall return a non-zero value.] */
AzureIoTClient 4:e472f5ce3473 465 result = __LINE__;
AzureIoTClient 4:e472f5ce3473 466 }
AzureIoTClient 4:e472f5ce3473 467 else
AzureIoTClient 4:e472f5ce3473 468 {
AzureIoTClient 4:e472f5ce3473 469 /* Codes_SRS_IOTHUB_MQTT_TRANSPORT_07_018: [On success IoTHubTransportMqtt_Subscribe shall return 0.] */
AzureIoTClient 4:e472f5ce3473 470 transportState->subscribed = true;
AzureIoTClient 4:e472f5ce3473 471 transportState->currPacketState = SUBSCRIBE_TYPE;
AzureIoTClient 4:e472f5ce3473 472 result = 0;
AzureIoTClient 4:e472f5ce3473 473 }
AzureIoTClient 4:e472f5ce3473 474 }
AzureIoTClient 4:e472f5ce3473 475 else
AzureIoTClient 4:e472f5ce3473 476 {
AzureIoTClient 4:e472f5ce3473 477 if (transportState->receiveMessages)
AzureIoTClient 4:e472f5ce3473 478 {
AzureIoTClient 4:e472f5ce3473 479 transportState->currPacketState = SUBSCRIBE_TYPE;
AzureIoTClient 4:e472f5ce3473 480 }
AzureIoTClient 4:e472f5ce3473 481 else
AzureIoTClient 4:e472f5ce3473 482 {
AzureIoTClient 4:e472f5ce3473 483 transportState->currPacketState = PUBLISH_TYPE;
AzureIoTClient 4:e472f5ce3473 484 }
AzureIoTClient 4:e472f5ce3473 485 }
AzureIoTClient 4:e472f5ce3473 486 return result;
AzureIoTClient 3:40f482ed0be8 487 }
AzureIoTClient 3:40f482ed0be8 488
AzureIoTClient 3:40f482ed0be8 489 static const unsigned char* RetrieveMessagePayload(IOTHUB_MESSAGE_HANDLE messageHandle, size_t* length)
AzureIoTClient 3:40f482ed0be8 490 {
AzureIoTClient 4:e472f5ce3473 491 const unsigned char* result;
AzureIoTClient 3:40f482ed0be8 492
AzureIoTClient 4:e472f5ce3473 493 IOTHUBMESSAGE_CONTENT_TYPE contentType = IoTHubMessage_GetContentType(messageHandle);
AzureIoTClient 4:e472f5ce3473 494 if (contentType == IOTHUBMESSAGE_BYTEARRAY)
AzureIoTClient 4:e472f5ce3473 495 {
AzureIoTClient 4:e472f5ce3473 496 if (IoTHubMessage_GetByteArray(messageHandle, &result, length) != IOTHUB_MESSAGE_OK)
AzureIoTClient 4:e472f5ce3473 497 {
AzureIoTClient 4:e472f5ce3473 498 LogError("Failure result from IoTHubMessage_GetByteArray");
AzureIoTClient 4:e472f5ce3473 499 result = NULL;
AzureIoTClient 4:e472f5ce3473 500 *length = 0;
AzureIoTClient 4:e472f5ce3473 501 }
AzureIoTClient 4:e472f5ce3473 502 }
AzureIoTClient 4:e472f5ce3473 503 else if (contentType == IOTHUBMESSAGE_STRING)
AzureIoTClient 4:e472f5ce3473 504 {
AzureIoTClient 4:e472f5ce3473 505 result = (const unsigned char*)IoTHubMessage_GetString(messageHandle);
AzureIoTClient 4:e472f5ce3473 506 if (result == NULL)
AzureIoTClient 4:e472f5ce3473 507 {
AzureIoTClient 4:e472f5ce3473 508 LogError("Failure result from IoTHubMessage_GetString");
AzureIoTClient 4:e472f5ce3473 509 result = NULL;
AzureIoTClient 4:e472f5ce3473 510 *length = 0;
AzureIoTClient 4:e472f5ce3473 511 }
AzureIoTClient 4:e472f5ce3473 512 else
AzureIoTClient 4:e472f5ce3473 513 {
AzureIoTClient 4:e472f5ce3473 514 *length = strlen((const char*)result);
AzureIoTClient 4:e472f5ce3473 515 }
AzureIoTClient 4:e472f5ce3473 516 }
AzureIoTClient 4:e472f5ce3473 517 else
AzureIoTClient 4:e472f5ce3473 518 {
AzureIoTClient 4:e472f5ce3473 519 result = NULL;
AzureIoTClient 4:e472f5ce3473 520 *length = 0;
AzureIoTClient 4:e472f5ce3473 521 }
AzureIoTClient 4:e472f5ce3473 522 return result;
AzureIoTClient 3:40f482ed0be8 523 }
AzureIoTClient 3:40f482ed0be8 524
AzureIoTClient 3:40f482ed0be8 525 static STRING_HANDLE ConstructSasToken(const char* iothubName, const char* iotHubSuffix, const char* deviceId)
AzureIoTClient 3:40f482ed0be8 526 {
AzureIoTClient 4:e472f5ce3473 527 STRING_HANDLE result;
AzureIoTClient 4:e472f5ce3473 528 size_t len = strlen(iothubName);
AzureIoTClient 4:e472f5ce3473 529 len += strlen(iotHubSuffix);
AzureIoTClient 4:e472f5ce3473 530 len += strlen(deviceId);
AzureIoTClient 3:40f482ed0be8 531
AzureIoTClient 4:e472f5ce3473 532 char* sasToken = malloc(len + SAS_TOKEN_DEFAULT_LEN + 1);
AzureIoTClient 4:e472f5ce3473 533 if (sasToken == NULL)
AzureIoTClient 4:e472f5ce3473 534 {
AzureIoTClient 4:e472f5ce3473 535 result = NULL;
AzureIoTClient 4:e472f5ce3473 536 }
AzureIoTClient 4:e472f5ce3473 537 else
AzureIoTClient 4:e472f5ce3473 538 {
AzureIoTClient 4:e472f5ce3473 539 (void)sprintf(sasToken, "%s.%s/devices/%s", iothubName, iotHubSuffix, deviceId);
AzureIoTClient 4:e472f5ce3473 540 result = STRING_construct(sasToken);
AzureIoTClient 4:e472f5ce3473 541 free(sasToken);
AzureIoTClient 4:e472f5ce3473 542 }
AzureIoTClient 4:e472f5ce3473 543 return result;
AzureIoTClient 3:40f482ed0be8 544 }
AzureIoTClient 3:40f482ed0be8 545
AzureIoTClient 3:40f482ed0be8 546 static STRING_HANDLE ConstructEventTopic(const char* deviceId)
AzureIoTClient 3:40f482ed0be8 547 {
AzureIoTClient 4:e472f5ce3473 548 STRING_HANDLE result;
AzureIoTClient 4:e472f5ce3473 549 size_t len = strlen(deviceId);
AzureIoTClient 3:40f482ed0be8 550
AzureIoTClient 4:e472f5ce3473 551 char* eventTopic = malloc(len + EVENT_TOPIC_DEFAULT_LEN + 1);
AzureIoTClient 4:e472f5ce3473 552 if (eventTopic == NULL)
AzureIoTClient 4:e472f5ce3473 553 {
AzureIoTClient 4:e472f5ce3473 554 result = NULL;
AzureIoTClient 4:e472f5ce3473 555 }
AzureIoTClient 4:e472f5ce3473 556 else
AzureIoTClient 4:e472f5ce3473 557 {
AzureIoTClient 4:e472f5ce3473 558 (void)sprintf(eventTopic, DEVICE_DEVICE_TOPIC, deviceId);
AzureIoTClient 4:e472f5ce3473 559 result = STRING_construct(eventTopic);
AzureIoTClient 4:e472f5ce3473 560 free(eventTopic);
AzureIoTClient 4:e472f5ce3473 561 }
AzureIoTClient 4:e472f5ce3473 562 return result;
AzureIoTClient 3:40f482ed0be8 563 }
AzureIoTClient 3:40f482ed0be8 564
AzureIoTClient 3:40f482ed0be8 565 static STRING_HANDLE ConstructMessageTopic(const char* deviceId)
AzureIoTClient 3:40f482ed0be8 566 {
AzureIoTClient 4:e472f5ce3473 567 STRING_HANDLE result;
AzureIoTClient 4:e472f5ce3473 568 size_t len = strlen(deviceId);
AzureIoTClient 3:40f482ed0be8 569
AzureIoTClient 4:e472f5ce3473 570 char* messageTopic = malloc(len + 32 + 1);
AzureIoTClient 4:e472f5ce3473 571 if (messageTopic == NULL)
AzureIoTClient 4:e472f5ce3473 572 {
AzureIoTClient 4:e472f5ce3473 573 result = NULL;
AzureIoTClient 4:e472f5ce3473 574 }
AzureIoTClient 4:e472f5ce3473 575 else
AzureIoTClient 4:e472f5ce3473 576 {
AzureIoTClient 4:e472f5ce3473 577 (void)sprintf(messageTopic, DEVICE_MSG_TOPIC, deviceId);
AzureIoTClient 4:e472f5ce3473 578 result = STRING_construct(messageTopic);
AzureIoTClient 4:e472f5ce3473 579 free(messageTopic);
AzureIoTClient 4:e472f5ce3473 580 }
AzureIoTClient 4:e472f5ce3473 581 return result;
AzureIoTClient 3:40f482ed0be8 582 }
AzureIoTClient 3:40f482ed0be8 583
AzureIoTClient 3:40f482ed0be8 584 static int GetTransportProviderIfNecessary(PMQTTTRANSPORT_HANDLE_DATA transportState)
AzureIoTClient 3:40f482ed0be8 585 {
AzureIoTClient 4:e472f5ce3473 586 int result;
AzureIoTClient 3:40f482ed0be8 587
AzureIoTClient 4:e472f5ce3473 588 if (transportState->xioTransport == NULL)
AzureIoTClient 4:e472f5ce3473 589 {
AzureIoTClient 4:e472f5ce3473 590 // construct address
AzureIoTClient 4:e472f5ce3473 591 const char* hostAddress = STRING_c_str(transportState->hostAddress);
AzureIoTClient 4:e472f5ce3473 592 transportState->xioTransport = getIoTransportProvider(hostAddress, transportState->portNum);
AzureIoTClient 4:e472f5ce3473 593 if (transportState->xioTransport == NULL)
AzureIoTClient 4:e472f5ce3473 594 {
AzureIoTClient 4:e472f5ce3473 595 LogError("Unable to create the lower level TLS layer.");
AzureIoTClient 4:e472f5ce3473 596 result = __LINE__;
AzureIoTClient 4:e472f5ce3473 597 }
AzureIoTClient 4:e472f5ce3473 598 else
AzureIoTClient 4:e472f5ce3473 599 {
AzureIoTClient 4:e472f5ce3473 600 result = 0;
AzureIoTClient 4:e472f5ce3473 601 }
AzureIoTClient 4:e472f5ce3473 602 }
AzureIoTClient 4:e472f5ce3473 603 else
AzureIoTClient 4:e472f5ce3473 604 {
AzureIoTClient 4:e472f5ce3473 605 result = 0;
AzureIoTClient 4:e472f5ce3473 606 }
AzureIoTClient 4:e472f5ce3473 607 return result;
AzureIoTClient 3:40f482ed0be8 608 }
AzureIoTClient 3:40f482ed0be8 609
AzureIoTClient 3:40f482ed0be8 610 static int SendMqttConnectMsg(PMQTTTRANSPORT_HANDLE_DATA transportState)
AzureIoTClient 3:40f482ed0be8 611 {
AzureIoTClient 4:e472f5ce3473 612 int result;
AzureIoTClient 3:40f482ed0be8 613
AzureIoTClient 4:e472f5ce3473 614 // Construct SAS token
AzureIoTClient 4:e472f5ce3473 615 size_t secSinceEpoch = (size_t)(difftime(get_time(NULL), EPOCH_TIME_T_VALUE) + 0);
AzureIoTClient 4:e472f5ce3473 616 size_t expiryTime = secSinceEpoch + SAS_TOKEN_DEFAULT_LIFETIME;
AzureIoTClient 3:40f482ed0be8 617
AzureIoTClient 4:e472f5ce3473 618 // Not checking the success of this variable, if fail it will fail in the SASToken creation and return false;
AzureIoTClient 4:e472f5ce3473 619 STRING_HANDLE emptyKeyName = STRING_new();
AzureIoTClient 3:40f482ed0be8 620 if (emptyKeyName == NULL)
Azure.IoT Build 0:5e72a75c31b8 621 {
Azure.IoT Build 0:5e72a75c31b8 622 result = __LINE__;
Azure.IoT Build 0:5e72a75c31b8 623 }
Azure.IoT Build 0:5e72a75c31b8 624 else
Azure.IoT Build 0:5e72a75c31b8 625 {
AzureIoTClient 3:40f482ed0be8 626 STRING_HANDLE sasToken = NULL;
AzureIoTClient 3:40f482ed0be8 627 if (transportState->sasTokenFromUser)
AzureIoTClient 3:40f482ed0be8 628 {
AzureIoTClient 3:40f482ed0be8 629 sasToken = STRING_clone(transportState->sasTokenSr);
AzureIoTClient 3:40f482ed0be8 630 }
AzureIoTClient 3:40f482ed0be8 631 else
AzureIoTClient 3:40f482ed0be8 632 {
AzureIoTClient 3:40f482ed0be8 633 sasToken = SASToken_Create(transportState->device_key, transportState->sasTokenSr, emptyKeyName, expiryTime);
AzureIoTClient 3:40f482ed0be8 634 }
AzureIoTClient 3:40f482ed0be8 635
AzureIoTClient 3:40f482ed0be8 636 if (sasToken == NULL)
Azure.IoT Build 0:5e72a75c31b8 637 {
Azure.IoT Build 0:5e72a75c31b8 638 result = __LINE__;
Azure.IoT Build 0:5e72a75c31b8 639 }
Azure.IoT Build 0:5e72a75c31b8 640 else
Azure.IoT Build 0:5e72a75c31b8 641 {
AzureIoTClient 3:40f482ed0be8 642 MQTT_CLIENT_OPTIONS options = { 0 };
AzureIoTClient 3:40f482ed0be8 643 options.clientId = (char*)STRING_c_str(transportState->device_id);
AzureIoTClient 3:40f482ed0be8 644 options.willMessage = NULL;
AzureIoTClient 3:40f482ed0be8 645 options.username = (char*)STRING_c_str(transportState->configPassedThroughUsername);
AzureIoTClient 3:40f482ed0be8 646 options.password = (char*)STRING_c_str(sasToken);
AzureIoTClient 3:40f482ed0be8 647 options.keepAliveInterval = transportState->keepAliveValue;
AzureIoTClient 3:40f482ed0be8 648 options.useCleanSession = false;
AzureIoTClient 3:40f482ed0be8 649 options.qualityOfServiceValue = DELIVER_AT_LEAST_ONCE;
AzureIoTClient 2:9db4da50abaa 650
AzureIoTClient 3:40f482ed0be8 651 if (GetTransportProviderIfNecessary(transportState) == 0)
Azure.IoT Build 0:5e72a75c31b8 652 {
AzureIoTClient 3:40f482ed0be8 653 if (mqtt_client_connect(transportState->mqttClient, transportState->xioTransport, &options) != 0)
Azure.IoT Build 0:5e72a75c31b8 654 {
AzureIoTClient 3:40f482ed0be8 655 LogError("failure connecting to address %s:%d.", STRING_c_str(transportState->hostAddress), transportState->portNum);
AzureIoTClient 3:40f482ed0be8 656 xio_destroy(transportState->xioTransport);
AzureIoTClient 3:40f482ed0be8 657 transportState->xioTransport = NULL;
AzureIoTClient 3:40f482ed0be8 658 result = __LINE__;
Azure.IoT Build 0:5e72a75c31b8 659 }
Azure.IoT Build 0:5e72a75c31b8 660 else
Azure.IoT Build 0:5e72a75c31b8 661 {
AzureIoTClient 3:40f482ed0be8 662 (void)tickcounter_get_current_ms(g_msgTickCounter, &transportState->mqtt_connect_time);
AzureIoTClient 3:40f482ed0be8 663 result = 0;
Azure.IoT Build 0:5e72a75c31b8 664 }
Azure.IoT Build 0:5e72a75c31b8 665 }
Azure.IoT Build 0:5e72a75c31b8 666 else
Azure.IoT Build 0:5e72a75c31b8 667 {
AzureIoTClient 3:40f482ed0be8 668 result = __LINE__;
Azure.IoT Build 0:5e72a75c31b8 669 }
Azure.IoT Build 0:5e72a75c31b8 670 }
AzureIoTClient 3:40f482ed0be8 671 STRING_delete(emptyKeyName);
AzureIoTClient 3:40f482ed0be8 672 STRING_delete(sasToken);
AzureIoTClient 2:9db4da50abaa 673 }
AzureIoTClient 4:e472f5ce3473 674 return result;
Azure.IoT Build 0:5e72a75c31b8 675 }
Azure.IoT Build 0:5e72a75c31b8 676
Azure.IoT Build 0:5e72a75c31b8 677 static int InitializeConnection(PMQTTTRANSPORT_HANDLE_DATA transportState)
Azure.IoT Build 0:5e72a75c31b8 678 {
AzureIoTClient 4:e472f5ce3473 679 int result = 0;
AzureIoTClient 2:9db4da50abaa 680
AzureIoTClient 4:e472f5ce3473 681 // Make sure we're not destroying the object
AzureIoTClient 4:e472f5ce3473 682 if (!transportState->destroyCalled)
AzureIoTClient 4:e472f5ce3473 683 {
AzureIoTClient 4:e472f5ce3473 684 // If we are not connected then check to see if we need
AzureIoTClient 4:e472f5ce3473 685 // to back off the connecting to the server
AzureIoTClient 4:e472f5ce3473 686 if (!transportState->connected)
AzureIoTClient 4:e472f5ce3473 687 {
AzureIoTClient 4:e472f5ce3473 688 // Default makeConnection as true if something goes wrong we'll make the connection
AzureIoTClient 4:e472f5ce3473 689 bool makeConnection = true;
AzureIoTClient 4:e472f5ce3473 690 // If we've failed for FAILED_CONN_BACKOFF_VALUE straight times them let's slow down connection
AzureIoTClient 4:e472f5ce3473 691 // to the service
AzureIoTClient 4:e472f5ce3473 692 if (transportState->connectFailCount > FAILED_CONN_BACKOFF_VALUE)
AzureIoTClient 4:e472f5ce3473 693 {
AzureIoTClient 4:e472f5ce3473 694 uint64_t currentTick;
AzureIoTClient 4:e472f5ce3473 695 if (tickcounter_get_current_ms(g_msgTickCounter, &currentTick) == 0)
AzureIoTClient 4:e472f5ce3473 696 {
AzureIoTClient 4:e472f5ce3473 697 if ( ((currentTick - transportState->connectTick)/1000) <= DEFAULT_CONNECTION_INTERVAL)
AzureIoTClient 4:e472f5ce3473 698 {
AzureIoTClient 4:e472f5ce3473 699 result = __LINE__;
AzureIoTClient 4:e472f5ce3473 700 makeConnection = false;
AzureIoTClient 4:e472f5ce3473 701 }
AzureIoTClient 4:e472f5ce3473 702 }
AzureIoTClient 4:e472f5ce3473 703 }
AzureIoTClient 2:9db4da50abaa 704
AzureIoTClient 4:e472f5ce3473 705 if (makeConnection)
AzureIoTClient 4:e472f5ce3473 706 {
AzureIoTClient 4:e472f5ce3473 707 (void)tickcounter_get_current_ms(g_msgTickCounter, &transportState->connectTick);
AzureIoTClient 4:e472f5ce3473 708 if (SendMqttConnectMsg(transportState) != 0)
AzureIoTClient 4:e472f5ce3473 709 {
AzureIoTClient 4:e472f5ce3473 710 transportState->connectFailCount++;
AzureIoTClient 4:e472f5ce3473 711 result = __LINE__;
AzureIoTClient 4:e472f5ce3473 712 }
AzureIoTClient 4:e472f5ce3473 713 else
AzureIoTClient 4:e472f5ce3473 714 {
AzureIoTClient 4:e472f5ce3473 715 transportState->connectFailCount = 0;
AzureIoTClient 4:e472f5ce3473 716 transportState->connected = true;
AzureIoTClient 4:e472f5ce3473 717 result = 0;
AzureIoTClient 4:e472f5ce3473 718 }
AzureIoTClient 4:e472f5ce3473 719 }
AzureIoTClient 4:e472f5ce3473 720 }
AzureIoTClient 2:9db4da50abaa 721
AzureIoTClient 4:e472f5ce3473 722 if (transportState->connected)
AzureIoTClient 4:e472f5ce3473 723 {
AzureIoTClient 4:e472f5ce3473 724 // We are connected and not being closed, so does SAS need to reconnect?
AzureIoTClient 4:e472f5ce3473 725 uint64_t current_time;
AzureIoTClient 4:e472f5ce3473 726 (void)tickcounter_get_current_ms(g_msgTickCounter, &current_time);
AzureIoTClient 4:e472f5ce3473 727 if ((current_time - transportState->mqtt_connect_time) / 1000 > (SAS_TOKEN_DEFAULT_LIFETIME*SAS_REFRESH_MULTIPLIER))
AzureIoTClient 4:e472f5ce3473 728 {
AzureIoTClient 4:e472f5ce3473 729 (void)mqtt_client_disconnect(transportState->mqttClient);
AzureIoTClient 4:e472f5ce3473 730 transportState->subscribed = false;
AzureIoTClient 4:e472f5ce3473 731 transportState->connected = false;
AzureIoTClient 4:e472f5ce3473 732 transportState->currPacketState = UNKNOWN_TYPE;
AzureIoTClient 4:e472f5ce3473 733 }
AzureIoTClient 4:e472f5ce3473 734 }
AzureIoTClient 4:e472f5ce3473 735 }
AzureIoTClient 4:e472f5ce3473 736 return result;
Azure.IoT Build 0:5e72a75c31b8 737 }
Azure.IoT Build 0:5e72a75c31b8 738
Azure.IoT Build 0:5e72a75c31b8 739 static STRING_HANDLE buildConfigForUsername(const IOTHUB_CLIENT_CONFIG* upperConfig)
Azure.IoT Build 0:5e72a75c31b8 740 {
AzureIoTClient 4:e472f5ce3473 741 STRING_HANDLE result;
Azure.IoT Build 0:5e72a75c31b8 742
AzureIoTClient 4:e472f5ce3473 743 size_t len = strlen(upperConfig->iotHubName)+strlen(upperConfig->iotHubSuffix)+strlen(upperConfig->deviceId)+strlen(CLIENT_DEVICE_TYPE_PREFIX)+strlen(IOTHUB_SDK_VERSION);
AzureIoTClient 4:e472f5ce3473 744 char* eventTopic = malloc(len + BUILD_CONFIG_USERNAME + 1);
AzureIoTClient 4:e472f5ce3473 745 if (eventTopic == NULL)
AzureIoTClient 4:e472f5ce3473 746 {
AzureIoTClient 4:e472f5ce3473 747 result = NULL;
AzureIoTClient 4:e472f5ce3473 748 }
AzureIoTClient 4:e472f5ce3473 749 else
AzureIoTClient 4:e472f5ce3473 750 {
AzureIoTClient 4:e472f5ce3473 751 (void)sprintf(eventTopic, "%s.%s/%s/DeviceClientType=%s%%2F%s", upperConfig->iotHubName, upperConfig->iotHubSuffix, upperConfig->deviceId, CLIENT_DEVICE_TYPE_PREFIX, IOTHUB_SDK_VERSION);
AzureIoTClient 4:e472f5ce3473 752 result = STRING_construct(eventTopic);
AzureIoTClient 4:e472f5ce3473 753 free(eventTopic);
AzureIoTClient 4:e472f5ce3473 754 }
AzureIoTClient 4:e472f5ce3473 755 return result;
Azure.IoT Build 0:5e72a75c31b8 756 }
Azure.IoT Build 0:5e72a75c31b8 757
Azure.IoT Build 0:5e72a75c31b8 758 static PMQTTTRANSPORT_HANDLE_DATA InitializeTransportHandleData(const IOTHUB_CLIENT_CONFIG* upperConfig, PDLIST_ENTRY waitingToSend)
Azure.IoT Build 0:5e72a75c31b8 759 {
AzureIoTClient 4:e472f5ce3473 760 PMQTTTRANSPORT_HANDLE_DATA state = (PMQTTTRANSPORT_HANDLE_DATA)malloc(sizeof(MQTTTRANSPORT_HANDLE_DATA));
AzureIoTClient 4:e472f5ce3473 761 if (state == NULL)
AzureIoTClient 4:e472f5ce3473 762 {
AzureIoTClient 4:e472f5ce3473 763 LogError("Could not create MQTT transport state. Memory allocation failed.");
AzureIoTClient 4:e472f5ce3473 764 }
AzureIoTClient 4:e472f5ce3473 765 else if ((state->device_id = STRING_construct(upperConfig->deviceId)) == NULL)
AzureIoTClient 4:e472f5ce3473 766 {
AzureIoTClient 4:e472f5ce3473 767 free(state);
AzureIoTClient 4:e472f5ce3473 768 state = NULL;
AzureIoTClient 4:e472f5ce3473 769 }
Azure.IoT Build 0:5e72a75c31b8 770 else
Azure.IoT Build 0:5e72a75c31b8 771 {
AzureIoTClient 3:40f482ed0be8 772 state->device_key = NULL;
AzureIoTClient 3:40f482ed0be8 773 state->sasTokenSr = NULL;
AzureIoTClient 3:40f482ed0be8 774
AzureIoTClient 3:40f482ed0be8 775 if ((upperConfig->deviceKey != NULL) && ((state->device_key = STRING_construct(upperConfig->deviceKey)) == NULL))
AzureIoTClient 3:40f482ed0be8 776 {
AzureIoTClient 3:40f482ed0be8 777 LogError("Could not create device key for MQTT");
AzureIoTClient 3:40f482ed0be8 778 STRING_delete(state->device_id);
AzureIoTClient 3:40f482ed0be8 779 free(state);
AzureIoTClient 3:40f482ed0be8 780 state = NULL;
AzureIoTClient 3:40f482ed0be8 781 }
AzureIoTClient 3:40f482ed0be8 782 else if ((upperConfig->deviceSasToken != NULL) && ((state->sasTokenSr = STRING_construct(upperConfig->deviceSasToken)) == NULL))
AzureIoTClient 3:40f482ed0be8 783 {
AzureIoTClient 3:40f482ed0be8 784 LogError("Could not create Sas Token Sr String");
AzureIoTClient 3:40f482ed0be8 785 STRING_delete(state->device_id);
AzureIoTClient 3:40f482ed0be8 786 STRING_delete(state->device_key);
AzureIoTClient 3:40f482ed0be8 787 free(state);
AzureIoTClient 3:40f482ed0be8 788 state = NULL;
AzureIoTClient 3:40f482ed0be8 789 }
AzureIoTClient 3:40f482ed0be8 790 else if ((upperConfig->deviceSasToken == NULL) && ((state->sasTokenSr = ConstructSasToken(upperConfig->iotHubName, upperConfig->iotHubSuffix, upperConfig->deviceId)) == NULL))
Azure.IoT Build 0:5e72a75c31b8 791 {
AzureIoTClient 3:40f482ed0be8 792 LogError("Could not create Sas Token Sr String.");
AzureIoTClient 3:40f482ed0be8 793 STRING_delete(state->device_id);
AzureIoTClient 3:40f482ed0be8 794 STRING_delete(state->device_key);
AzureIoTClient 3:40f482ed0be8 795 free(state);
AzureIoTClient 3:40f482ed0be8 796 state = NULL;
AzureIoTClient 3:40f482ed0be8 797 }
AzureIoTClient 3:40f482ed0be8 798 else if ((state->mqttEventTopic = ConstructEventTopic(upperConfig->deviceId)) == NULL)
AzureIoTClient 3:40f482ed0be8 799 {
AzureIoTClient 3:40f482ed0be8 800 LogError("Could not create mqttEventTopic for MQTT");
AzureIoTClient 3:40f482ed0be8 801 STRING_delete(state->sasTokenSr);
AzureIoTClient 3:40f482ed0be8 802 STRING_delete(state->device_key);
AzureIoTClient 3:40f482ed0be8 803 STRING_delete(state->device_id);
AzureIoTClient 3:40f482ed0be8 804 free(state);
AzureIoTClient 3:40f482ed0be8 805 state = NULL;
AzureIoTClient 3:40f482ed0be8 806 }
AzureIoTClient 3:40f482ed0be8 807 else if ((state->mqttMessageTopic = ConstructMessageTopic(upperConfig->deviceId)) == NULL)
AzureIoTClient 3:40f482ed0be8 808 {
AzureIoTClient 3:40f482ed0be8 809 LogError("Could not create mqttMessageTopic for MQTT");
Azure.IoT Build 0:5e72a75c31b8 810 STRING_delete(state->mqttEventTopic);
Azure.IoT Build 0:5e72a75c31b8 811 STRING_delete(state->sasTokenSr);
Azure.IoT Build 0:5e72a75c31b8 812 STRING_delete(state->device_key);
Azure.IoT Build 0:5e72a75c31b8 813 STRING_delete(state->device_id);
Azure.IoT Build 0:5e72a75c31b8 814 free(state);
Azure.IoT Build 0:5e72a75c31b8 815 state = NULL;
Azure.IoT Build 0:5e72a75c31b8 816 }
Azure.IoT Build 0:5e72a75c31b8 817 else
Azure.IoT Build 0:5e72a75c31b8 818 {
AzureIoTClient 3:40f482ed0be8 819 state->mqttClient = mqtt_client_init(MqttRecvCallback, MqttOpCompleteCallback, state, defaultPrintLogFunction);
AzureIoTClient 3:40f482ed0be8 820 if (state->mqttClient == NULL)
Azure.IoT Build 0:5e72a75c31b8 821 {
Azure.IoT Build 0:5e72a75c31b8 822 STRING_delete(state->mqttEventTopic);
Azure.IoT Build 0:5e72a75c31b8 823 STRING_delete(state->mqttMessageTopic);
Azure.IoT Build 0:5e72a75c31b8 824 STRING_delete(state->sasTokenSr);
Azure.IoT Build 0:5e72a75c31b8 825 STRING_delete(state->device_key);
Azure.IoT Build 0:5e72a75c31b8 826 STRING_delete(state->device_id);
Azure.IoT Build 0:5e72a75c31b8 827 free(state);
Azure.IoT Build 0:5e72a75c31b8 828 state = NULL;
Azure.IoT Build 0:5e72a75c31b8 829 }
Azure.IoT Build 0:5e72a75c31b8 830 else
Azure.IoT Build 0:5e72a75c31b8 831 {
AzureIoTClient 3:40f482ed0be8 832 /* Codes_SRS_IOTHUB_MQTT_TRANSPORT_07_008: [The hostname shall be constructed using the iothubname and iothubSuffix.] */
AzureIoTClient 3:40f482ed0be8 833 // TODO: need to strip the ssl or http or tls
AzureIoTClient 3:40f482ed0be8 834 char tempAddress[DEFAULT_TEMP_STRING_LEN];
AzureIoTClient 3:40f482ed0be8 835 (void)snprintf(tempAddress, DEFAULT_TEMP_STRING_LEN, "%s.%s", upperConfig->iotHubName, upperConfig->iotHubSuffix);
AzureIoTClient 3:40f482ed0be8 836 if ((state->hostAddress = STRING_construct(tempAddress)) == NULL)
AzureIoTClient 3:40f482ed0be8 837 {
AzureIoTClient 3:40f482ed0be8 838 STRING_delete(state->mqttEventTopic);
AzureIoTClient 3:40f482ed0be8 839 STRING_delete(state->mqttMessageTopic);
AzureIoTClient 3:40f482ed0be8 840 STRING_delete(state->sasTokenSr);
AzureIoTClient 3:40f482ed0be8 841 STRING_delete(state->device_key);
AzureIoTClient 3:40f482ed0be8 842 STRING_delete(state->device_id);
AzureIoTClient 3:40f482ed0be8 843 free(state);
AzureIoTClient 3:40f482ed0be8 844 state = NULL;
AzureIoTClient 3:40f482ed0be8 845 }
AzureIoTClient 3:40f482ed0be8 846 else if ((state->configPassedThroughUsername = buildConfigForUsername(upperConfig)) == NULL)
AzureIoTClient 3:40f482ed0be8 847 {
AzureIoTClient 3:40f482ed0be8 848 STRING_delete(state->hostAddress);
AzureIoTClient 3:40f482ed0be8 849 STRING_delete(state->mqttEventTopic);
AzureIoTClient 3:40f482ed0be8 850 STRING_delete(state->mqttMessageTopic);
AzureIoTClient 3:40f482ed0be8 851 STRING_delete(state->sasTokenSr);
AzureIoTClient 3:40f482ed0be8 852 STRING_delete(state->device_key);
AzureIoTClient 3:40f482ed0be8 853 STRING_delete(state->device_id);
AzureIoTClient 3:40f482ed0be8 854 free(state);
AzureIoTClient 3:40f482ed0be8 855 state = NULL;
AzureIoTClient 3:40f482ed0be8 856 }
AzureIoTClient 3:40f482ed0be8 857 else
AzureIoTClient 3:40f482ed0be8 858 {
AzureIoTClient 3:40f482ed0be8 859 /* Codes_SRS_IOTHUB_MQTT_TRANSPORT_07_010: [IoTHubTransportMqtt_Create shall allocate memory to save its internal state where all topics, hostname, device_id, device_key, sasTokenSr and client handle shall be saved.] */
AzureIoTClient 3:40f482ed0be8 860 DList_InitializeListHead(&(state->waitingForAck));
AzureIoTClient 3:40f482ed0be8 861 state->sasTokenFromUser = (upperConfig->deviceSasToken == NULL) ? false : true;
AzureIoTClient 3:40f482ed0be8 862 state->destroyCalled = false;
AzureIoTClient 3:40f482ed0be8 863 state->isRegistered = false;
AzureIoTClient 3:40f482ed0be8 864 state->subscribed = false;
AzureIoTClient 3:40f482ed0be8 865 state->connected = false;
AzureIoTClient 3:40f482ed0be8 866 state->receiveMessages = false;
AzureIoTClient 3:40f482ed0be8 867 state->packetId = 1;
AzureIoTClient 3:40f482ed0be8 868 state->llClientHandle = NULL;
AzureIoTClient 3:40f482ed0be8 869 state->xioTransport = NULL;
AzureIoTClient 3:40f482ed0be8 870 state->portNum = DEFAULT_PORT_NUMBER;
AzureIoTClient 3:40f482ed0be8 871 state->waitingToSend = waitingToSend;
AzureIoTClient 3:40f482ed0be8 872 state->currPacketState = CONNECT_TYPE;
AzureIoTClient 3:40f482ed0be8 873 state->keepAliveValue = DEFAULT_MQTT_KEEPALIVE;
AzureIoTClient 3:40f482ed0be8 874 state->connectFailCount = 0;
AzureIoTClient 3:40f482ed0be8 875 state->connectTick = 0;
AzureIoTClient 3:40f482ed0be8 876 }
Azure.IoT Build 0:5e72a75c31b8 877 }
Azure.IoT Build 0:5e72a75c31b8 878 }
Azure.IoT Build 0:5e72a75c31b8 879 }
AzureIoTClient 4:e472f5ce3473 880 return state;
Azure.IoT Build 0:5e72a75c31b8 881 }
Azure.IoT Build 0:5e72a75c31b8 882
AzureIoTClient 4:e472f5ce3473 883 static TRANSPORT_LL_HANDLE IoTHubTransportMqtt_Create(const IOTHUBTRANSPORT_CONFIG* config)
Azure.IoT Build 0:5e72a75c31b8 884 {
AzureIoTClient 4:e472f5ce3473 885 PMQTTTRANSPORT_HANDLE_DATA result;
AzureIoTClient 4:e472f5ce3473 886 size_t deviceIdSize;
AzureIoTClient 3:40f482ed0be8 887
AzureIoTClient 4:e472f5ce3473 888 /* Codes_SRS_IOTHUB_MQTT_TRANSPORT_07_001: [If parameter config is NULL then IoTHubTransportMqtt_Create shall return NULL.] */
AzureIoTClient 4:e472f5ce3473 889 if (config == NULL)
AzureIoTClient 4:e472f5ce3473 890 {
AzureIoTClient 4:e472f5ce3473 891 LogError("Invalid Argument: Config Parameter is NULL.");
AzureIoTClient 4:e472f5ce3473 892 result = NULL;
AzureIoTClient 4:e472f5ce3473 893 }
AzureIoTClient 4:e472f5ce3473 894 /* Codes_SRS_IOTHUB_MQTT_TRANSPORT_07_002: [If the parameter config's variables upperConfig or waitingToSend are NULL then IoTHubTransportMqtt_Create shall return NULL.] */
AzureIoTClient 4:e472f5ce3473 895 /* Codes_SRS_IOTHUB_MQTT_TRANSPORT_07_003: [If the upperConfig's variables deviceId, both deviceKey and deviceSasToken, iotHubName, protocol, or iotHubSuffix are NULL then IoTHubTransportMqtt_Create shall return NULL.] */
AzureIoTClient 4:e472f5ce3473 896 else if (config->upperConfig == NULL || config->upperConfig->protocol == NULL || config->upperConfig->deviceId == NULL || ((config->upperConfig->deviceKey == NULL) && (config->upperConfig->deviceSasToken == NULL)) ||
AzureIoTClient 4:e472f5ce3473 897 config->upperConfig->iotHubName == NULL || config->upperConfig->iotHubSuffix == NULL)
AzureIoTClient 4:e472f5ce3473 898 {
AzureIoTClient 4:e472f5ce3473 899 LogError("Invalid Argument: upperConfig structure contains an invalid parameter");
AzureIoTClient 4:e472f5ce3473 900 result = NULL;
AzureIoTClient 4:e472f5ce3473 901 }
AzureIoTClient 4:e472f5ce3473 902 /* Codes_SRS_IOTHUB_MQTT_TRANSPORT_07_002: [If the parameter config's variables upperConfig or waitingToSend are NULL then IoTHubTransportMqtt_Create shall return NULL.] */
AzureIoTClient 4:e472f5ce3473 903 else if (config->waitingToSend == NULL)
AzureIoTClient 4:e472f5ce3473 904 {
AzureIoTClient 4:e472f5ce3473 905 LogError("Invalid Argument: waitingToSend is NULL)");
AzureIoTClient 4:e472f5ce3473 906 result = NULL;
AzureIoTClient 4:e472f5ce3473 907 }
AzureIoTClient 4:e472f5ce3473 908 /* Codes_SRS_IOTHUB_MQTT_TRANSPORT_07_006: [If the upperConfig's variables deviceId is an empty strings or length is greater then 128 then IoTHubTransportMqtt_Create shall return NULL.] */
AzureIoTClient 4:e472f5ce3473 909 else if ( ( (deviceIdSize = strlen(config->upperConfig->deviceId)) > 128U) || (deviceIdSize == 0) )
AzureIoTClient 4:e472f5ce3473 910 {
AzureIoTClient 4:e472f5ce3473 911 LogError("Invalid Argument: DeviceId is of an invalid size");
AzureIoTClient 4:e472f5ce3473 912 result = NULL;
AzureIoTClient 4:e472f5ce3473 913 }
AzureIoTClient 4:e472f5ce3473 914 /* Codes_SRS_IOTHUB_MQTT_TRANSPORT_07_003: [If the upperConfig's variables deviceId, both deviceKey and deviceSasToken, iotHubName, protocol, or iotHubSuffix are NULL then IoTHubTransportMqtt_Create shall return NULL.] */
AzureIoTClient 4:e472f5ce3473 915 else if ((config->upperConfig->deviceKey != NULL) && (strlen(config->upperConfig->deviceKey) == 0))
AzureIoTClient 4:e472f5ce3473 916 {
AzureIoTClient 4:e472f5ce3473 917 LogError("Invalid Argument: deviceKey is empty");
AzureIoTClient 4:e472f5ce3473 918 result = NULL;
AzureIoTClient 4:e472f5ce3473 919 }
AzureIoTClient 4:e472f5ce3473 920 /* Codes_SRS_IOTHUB_MQTT_TRANSPORT_07_003: [If the upperConfig's variables deviceId, both deviceKey and deviceSasToken, iotHubName, protocol, or iotHubSuffix are NULL then IoTHubTransportMqtt_Create shall return NULL.] */
AzureIoTClient 4:e472f5ce3473 921 else if ((config->upperConfig->deviceSasToken != NULL) && (strlen(config->upperConfig->deviceSasToken) == 0))
AzureIoTClient 4:e472f5ce3473 922 {
AzureIoTClient 4:e472f5ce3473 923 LogError("Invalid Argument: deviceSasToken is empty");
AzureIoTClient 4:e472f5ce3473 924 result = NULL;
AzureIoTClient 4:e472f5ce3473 925 }
AzureIoTClient 3:40f482ed0be8 926 /* Codes_SRS_IOTHUB_MQTT_TRANSPORT_03_003: [If both deviceKey & deviceSasToken fields are NOT NULL then IoTHubTransportMqtt_Create shall return NULL.] */
AzureIoTClient 3:40f482ed0be8 927 else if ((config->upperConfig->deviceKey != NULL) && (config->upperConfig->deviceSasToken != NULL))
Azure.IoT Build 0:5e72a75c31b8 928 {
AzureIoTClient 3:40f482ed0be8 929 LogError("Invalid Argument: cannot have both deviceKey and deviceSasToken defined");
Azure.IoT Build 0:5e72a75c31b8 930 result = NULL;
Azure.IoT Build 0:5e72a75c31b8 931 }
Azure.IoT Build 0:5e72a75c31b8 932 /* Codes_SRS_IOTHUB_MQTT_TRANSPORT_07_003: [If the upperConfig's variables deviceId, deviceKey, iotHubName, protocol, or iotHubSuffix are NULL then IoTHubTransportMqtt_Create shall return NULL.] */
AzureIoTClient 4:e472f5ce3473 933 else if (strlen(config->upperConfig->iotHubName) == 0)
AzureIoTClient 4:e472f5ce3473 934 {
AzureIoTClient 4:e472f5ce3473 935 LogError("Invalid Argument: iotHubName is empty");
AzureIoTClient 4:e472f5ce3473 936 result = NULL;
AzureIoTClient 4:e472f5ce3473 937 }
AzureIoTClient 4:e472f5ce3473 938 else
AzureIoTClient 4:e472f5ce3473 939 {
AzureIoTClient 4:e472f5ce3473 940 result = InitializeTransportHandleData(config->upperConfig, config->waitingToSend);
AzureIoTClient 4:e472f5ce3473 941 if (result != NULL)
AzureIoTClient 4:e472f5ce3473 942 {
AzureIoTClient 4:e472f5ce3473 943 g_msgTickCounter = tickcounter_create();
AzureIoTClient 4:e472f5ce3473 944 }
AzureIoTClient 4:e472f5ce3473 945 }
AzureIoTClient 4:e472f5ce3473 946 /* Codes_SRS_IOTHUB_MQTT_TRANSPORT_07_009: [If any error is encountered then IoTHubTransportMqtt_Create shall return NULL.] */
AzureIoTClient 4:e472f5ce3473 947 /* Codes_SRS_IOTHUB_MQTT_TRANSPORT_07_011: [On Success IoTHubTransportMqtt_Create shall return a non-NULL value.] */
AzureIoTClient 4:e472f5ce3473 948 return result;
Azure.IoT Build 0:5e72a75c31b8 949 }
Azure.IoT Build 0:5e72a75c31b8 950
AzureIoTClient 4:e472f5ce3473 951 /*forward declaration*/
AzureIoTClient 4:e472f5ce3473 952 static void IoTHubTransportMqtt_Unsubscribe(IOTHUB_DEVICE_HANDLE handle);
AzureIoTClient 4:e472f5ce3473 953
Azure.IoT Build 0:5e72a75c31b8 954 static void DisconnectFromClient(PMQTTTRANSPORT_HANDLE_DATA transportState)
Azure.IoT Build 0:5e72a75c31b8 955 {
AzureIoTClient 4:e472f5ce3473 956 /* Codes_SRS_IOTHUB_MQTT_TRANSPORT_07_013: [If the parameter subscribe is true then IoTHubTransportMqtt_Destroy shall call IoTHubTransportMqtt_Unsubscribe.] */
AzureIoTClient 4:e472f5ce3473 957 if (transportState->subscribed)
AzureIoTClient 4:e472f5ce3473 958 {
AzureIoTClient 4:e472f5ce3473 959 IoTHubTransportMqtt_Unsubscribe(transportState);
AzureIoTClient 4:e472f5ce3473 960 }
Azure.IoT Build 0:5e72a75c31b8 961
AzureIoTClient 4:e472f5ce3473 962 (void)mqtt_client_disconnect(transportState->mqttClient);
AzureIoTClient 4:e472f5ce3473 963 xio_destroy(transportState->xioTransport);
AzureIoTClient 4:e472f5ce3473 964 transportState->xioTransport = NULL;
Azure.IoT Build 0:5e72a75c31b8 965
AzureIoTClient 4:e472f5ce3473 966 transportState->connected = false;
AzureIoTClient 4:e472f5ce3473 967 transportState->currPacketState = DISCONNECT_TYPE;
Azure.IoT Build 0:5e72a75c31b8 968 }
Azure.IoT Build 0:5e72a75c31b8 969
AzureIoTClient 4:e472f5ce3473 970 static void IoTHubTransportMqtt_Destroy(TRANSPORT_LL_HANDLE handle)
Azure.IoT Build 0:5e72a75c31b8 971 {
AzureIoTClient 4:e472f5ce3473 972 /* Codes_SRS_IOTHUB_MQTT_TRANSPORT_07_012: [IoTHubTransportMqtt_Destroy shall do nothing if parameter handle is NULL.] */
AzureIoTClient 4:e472f5ce3473 973 PMQTTTRANSPORT_HANDLE_DATA transportState = (PMQTTTRANSPORT_HANDLE_DATA)handle;
AzureIoTClient 4:e472f5ce3473 974 if (transportState != NULL)
AzureIoTClient 4:e472f5ce3473 975 {
AzureIoTClient 4:e472f5ce3473 976 transportState->destroyCalled = true;
Azure.IoT Build 0:5e72a75c31b8 977
AzureIoTClient 4:e472f5ce3473 978 DisconnectFromClient(transportState);
Azure.IoT Build 0:5e72a75c31b8 979
AzureIoTClient 4:e472f5ce3473 980 //Empty the Waiting for Ack Messages.
AzureIoTClient 4:e472f5ce3473 981 while (!DList_IsListEmpty(&transportState->waitingForAck))
AzureIoTClient 4:e472f5ce3473 982 {
AzureIoTClient 4:e472f5ce3473 983 PDLIST_ENTRY currentEntry = DList_RemoveHeadList(&transportState->waitingForAck);
AzureIoTClient 4:e472f5ce3473 984 MQTT_MESSAGE_DETAILS_LIST* mqttMsgEntry = containingRecord(currentEntry, MQTT_MESSAGE_DETAILS_LIST, entry);
AzureIoTClient 4:e472f5ce3473 985 sendMsgComplete(mqttMsgEntry->iotHubMessageEntry, transportState, IOTHUB_BATCHSTATE_FAILED);
AzureIoTClient 4:e472f5ce3473 986 free(mqttMsgEntry);
AzureIoTClient 4:e472f5ce3473 987 }
Azure.IoT Build 0:5e72a75c31b8 988
AzureIoTClient 4:e472f5ce3473 989 /* Codes_SRS_IOTHUB_MQTT_TRANSPORT_07_014: [IoTHubTransportMqtt_Destroy shall free all the resources currently in use.] */
AzureIoTClient 4:e472f5ce3473 990 mqtt_client_deinit(transportState->mqttClient);
AzureIoTClient 4:e472f5ce3473 991 STRING_delete(transportState->mqttEventTopic);
AzureIoTClient 4:e472f5ce3473 992 STRING_delete(transportState->mqttMessageTopic);
AzureIoTClient 4:e472f5ce3473 993 STRING_delete(transportState->device_id);
AzureIoTClient 4:e472f5ce3473 994 STRING_delete(transportState->device_key);
AzureIoTClient 4:e472f5ce3473 995 STRING_delete(transportState->sasTokenSr);
AzureIoTClient 4:e472f5ce3473 996 STRING_delete(transportState->hostAddress);
AzureIoTClient 4:e472f5ce3473 997 STRING_delete(transportState->configPassedThroughUsername);
AzureIoTClient 4:e472f5ce3473 998 tickcounter_destroy(g_msgTickCounter);
AzureIoTClient 4:e472f5ce3473 999 free(transportState);
AzureIoTClient 4:e472f5ce3473 1000 }
Azure.IoT Build 0:5e72a75c31b8 1001 }
Azure.IoT Build 0:5e72a75c31b8 1002
AzureIoTClient 4:e472f5ce3473 1003 static int IoTHubTransportMqtt_Subscribe(IOTHUB_DEVICE_HANDLE handle)
Azure.IoT Build 0:5e72a75c31b8 1004 {
AzureIoTClient 4:e472f5ce3473 1005 int result;
AzureIoTClient 4:e472f5ce3473 1006 PMQTTTRANSPORT_HANDLE_DATA transportState = (PMQTTTRANSPORT_HANDLE_DATA)handle;
AzureIoTClient 4:e472f5ce3473 1007 if (transportState == NULL)
AzureIoTClient 4:e472f5ce3473 1008 {
AzureIoTClient 4:e472f5ce3473 1009 /* Codes_SRS_IOTHUB_MQTT_TRANSPORT_07_015: [If parameter handle is NULL than IoTHubTransportMqtt_Subscribe shall return a non-zero value.] */
AzureIoTClient 4:e472f5ce3473 1010 LogError("Invalid handle parameter. NULL.");
AzureIoTClient 4:e472f5ce3473 1011 result = __LINE__;
AzureIoTClient 4:e472f5ce3473 1012 }
AzureIoTClient 4:e472f5ce3473 1013 else
AzureIoTClient 4:e472f5ce3473 1014 {
AzureIoTClient 4:e472f5ce3473 1015 /* Code_SRS_IOTHUB_MQTT_TRANSPORT_07_016: [IoTHubTransportMqtt_Subscribe shall set a flag to enable mqtt_client_subscribe to be called to subscribe to the Message Topic.] */
AzureIoTClient 4:e472f5ce3473 1016 transportState->receiveMessages = true;
AzureIoTClient 4:e472f5ce3473 1017 /* Code_SRS_IOTHUB_MQTT_TRANSPORT_07_035: [If current packet state is not CONNACT, DISCONNECT_TYPE, or PACKET_TYPE_ERROR then IoTHubTransportMqtt_Subscribe shall set the packet state to SUBSCRIBE_TYPE.]*/
AzureIoTClient 4:e472f5ce3473 1018 if (transportState->currPacketState != CONNACK_TYPE &&
AzureIoTClient 4:e472f5ce3473 1019 transportState->currPacketState != CONNECT_TYPE &&
AzureIoTClient 4:e472f5ce3473 1020 transportState->currPacketState != DISCONNECT_TYPE &&
AzureIoTClient 4:e472f5ce3473 1021 transportState->currPacketState != PACKET_TYPE_ERROR)
AzureIoTClient 4:e472f5ce3473 1022 {
AzureIoTClient 4:e472f5ce3473 1023 transportState->currPacketState = SUBSCRIBE_TYPE;
AzureIoTClient 4:e472f5ce3473 1024 }
AzureIoTClient 4:e472f5ce3473 1025 result = 0;
AzureIoTClient 4:e472f5ce3473 1026 }
AzureIoTClient 4:e472f5ce3473 1027 return result;
Azure.IoT Build 0:5e72a75c31b8 1028 }
Azure.IoT Build 0:5e72a75c31b8 1029
AzureIoTClient 4:e472f5ce3473 1030 static void IoTHubTransportMqtt_Unsubscribe(IOTHUB_DEVICE_HANDLE handle)
Azure.IoT Build 0:5e72a75c31b8 1031 {
AzureIoTClient 4:e472f5ce3473 1032 PMQTTTRANSPORT_HANDLE_DATA transportState = (PMQTTTRANSPORT_HANDLE_DATA)handle;
AzureIoTClient 4:e472f5ce3473 1033 /* Codes_SRS_IOTHUB_MQTT_TRANSPORT_07_019: [If parameter handle is NULL then IoTHubTransportMqtt_Unsubscribe shall do nothing.] */
AzureIoTClient 4:e472f5ce3473 1034 if (transportState != NULL && transportState->subscribed)
AzureIoTClient 4:e472f5ce3473 1035 {
AzureIoTClient 4:e472f5ce3473 1036 /* Codes_SRS_IOTHUB_MQTT_TRANSPORT_07_020: [IoTHubTransportMqtt_Unsubscribe shall call mqtt_client_unsubscribe to unsubscribe the mqtt message topic.] */
AzureIoTClient 4:e472f5ce3473 1037 const char* unsubscribe[] = { STRING_c_str(transportState->mqttMessageTopic) };
AzureIoTClient 4:e472f5ce3473 1038 (void)mqtt_client_unsubscribe(transportState->mqttClient, transportState->packetId++, unsubscribe, 1);
AzureIoTClient 4:e472f5ce3473 1039 transportState->subscribed = false;
AzureIoTClient 4:e472f5ce3473 1040 transportState->receiveMessages = false;
AzureIoTClient 4:e472f5ce3473 1041 }
AzureIoTClient 4:e472f5ce3473 1042 else
AzureIoTClient 4:e472f5ce3473 1043 {
AzureIoTClient 4:e472f5ce3473 1044 LogError("Invalid argument to unsubscribe (NULL).");
AzureIoTClient 4:e472f5ce3473 1045 }
Azure.IoT Build 0:5e72a75c31b8 1046 }
Azure.IoT Build 0:5e72a75c31b8 1047
AzureIoTClient 4:e472f5ce3473 1048 static void IoTHubTransportMqtt_DoWork(TRANSPORT_LL_HANDLE handle, IOTHUB_CLIENT_LL_HANDLE iotHubClientHandle)
Azure.IoT Build 0:5e72a75c31b8 1049 {
AzureIoTClient 4:e472f5ce3473 1050 /* Codes_SRS_IOTHUB_MQTT_TRANSPORT_07_026: [IoTHubTransportMqtt_DoWork shall do nothing if parameter handle and/or iotHubClientHandle is NULL.] */
AzureIoTClient 4:e472f5ce3473 1051 PMQTTTRANSPORT_HANDLE_DATA transportState = (PMQTTTRANSPORT_HANDLE_DATA)handle;
AzureIoTClient 4:e472f5ce3473 1052 if (transportState != NULL && iotHubClientHandle != NULL)
AzureIoTClient 4:e472f5ce3473 1053 {
AzureIoTClient 4:e472f5ce3473 1054 transportState->llClientHandle = iotHubClientHandle;
Azure.IoT Build 0:5e72a75c31b8 1055
AzureIoTClient 4:e472f5ce3473 1056 if (InitializeConnection(transportState) != 0)
AzureIoTClient 4:e472f5ce3473 1057 {
AzureIoTClient 4:e472f5ce3473 1058 // Don't want to flood the logs with failures here
AzureIoTClient 4:e472f5ce3473 1059 }
AzureIoTClient 4:e472f5ce3473 1060 else
AzureIoTClient 4:e472f5ce3473 1061 {
AzureIoTClient 4:e472f5ce3473 1062 if (transportState->currPacketState == CONNACK_TYPE || transportState->currPacketState == SUBSCRIBE_TYPE)
AzureIoTClient 4:e472f5ce3473 1063 {
AzureIoTClient 4:e472f5ce3473 1064 (void)SubscribeToMqttProtocol(transportState);
AzureIoTClient 4:e472f5ce3473 1065 }
AzureIoTClient 4:e472f5ce3473 1066 else if (transportState->currPacketState == SUBACK_TYPE)
AzureIoTClient 4:e472f5ce3473 1067 {
AzureIoTClient 4:e472f5ce3473 1068 // Publish can be called now
AzureIoTClient 4:e472f5ce3473 1069 transportState->currPacketState = PUBLISH_TYPE;
AzureIoTClient 4:e472f5ce3473 1070 }
AzureIoTClient 4:e472f5ce3473 1071 else if (transportState->currPacketState == PUBLISH_TYPE)
AzureIoTClient 4:e472f5ce3473 1072 {
AzureIoTClient 4:e472f5ce3473 1073 PDLIST_ENTRY currentListEntry = transportState->waitingForAck.Flink;
AzureIoTClient 4:e472f5ce3473 1074 while (currentListEntry != &transportState->waitingForAck)
AzureIoTClient 4:e472f5ce3473 1075 {
AzureIoTClient 4:e472f5ce3473 1076 MQTT_MESSAGE_DETAILS_LIST* mqttMsgEntry = containingRecord(currentListEntry, MQTT_MESSAGE_DETAILS_LIST, entry);
AzureIoTClient 4:e472f5ce3473 1077 DLIST_ENTRY nextListEntry;
AzureIoTClient 4:e472f5ce3473 1078 nextListEntry.Flink = currentListEntry->Flink;
Azure.IoT Build 0:5e72a75c31b8 1079
AzureIoTClient 4:e472f5ce3473 1080 uint64_t current_ms;
AzureIoTClient 4:e472f5ce3473 1081 (void)tickcounter_get_current_ms(g_msgTickCounter, &current_ms);
AzureIoTClient 4:e472f5ce3473 1082 /* Codes_SRS_IOTHUB_MQTT_TRANSPORT_07_033: [IoTHubTransportMqtt_DoWork shall iterate through the Waiting Acknowledge messages looking for any message that has been waiting longer than 2 min.]*/
AzureIoTClient 4:e472f5ce3473 1083 if (((current_ms - mqttMsgEntry->msgPublishTime) / 1000) > RESEND_TIMEOUT_VALUE_MIN)
AzureIoTClient 4:e472f5ce3473 1084 {
AzureIoTClient 4:e472f5ce3473 1085 /* Codes_SRS_IOTHUB_MQTT_TRANSPORT_07_034: [If IoTHubTransportMqtt_DoWork has resent the message two times then it shall fail the message] */
AzureIoTClient 4:e472f5ce3473 1086 if (mqttMsgEntry->retryCount >= MAX_SEND_RECOUNT_LIMIT)
AzureIoTClient 4:e472f5ce3473 1087 {
AzureIoTClient 4:e472f5ce3473 1088 (void)DList_RemoveEntryList(currentListEntry);
AzureIoTClient 4:e472f5ce3473 1089 sendMsgComplete(mqttMsgEntry->iotHubMessageEntry, transportState, IOTHUB_BATCHSTATE_FAILED);
AzureIoTClient 4:e472f5ce3473 1090 free(mqttMsgEntry);
AzureIoTClient 4:e472f5ce3473 1091 }
AzureIoTClient 4:e472f5ce3473 1092 else
AzureIoTClient 4:e472f5ce3473 1093 {
AzureIoTClient 4:e472f5ce3473 1094 size_t messageLength;
AzureIoTClient 4:e472f5ce3473 1095 const unsigned char* messagePayload = RetrieveMessagePayload(mqttMsgEntry->iotHubMessageEntry->messageHandle, &messageLength);
AzureIoTClient 4:e472f5ce3473 1096 if (messageLength == 0 || messagePayload == NULL)
AzureIoTClient 4:e472f5ce3473 1097 {
AzureIoTClient 4:e472f5ce3473 1098 LogError("Failure from creating Message IoTHubMessage_GetData");
AzureIoTClient 4:e472f5ce3473 1099 }
AzureIoTClient 4:e472f5ce3473 1100 else
AzureIoTClient 4:e472f5ce3473 1101 {
AzureIoTClient 4:e472f5ce3473 1102 if (publishMqttMessage(transportState, mqttMsgEntry, messagePayload, messageLength) != 0)
AzureIoTClient 4:e472f5ce3473 1103 {
AzureIoTClient 4:e472f5ce3473 1104 (void)DList_RemoveEntryList(currentListEntry);
AzureIoTClient 4:e472f5ce3473 1105 sendMsgComplete(mqttMsgEntry->iotHubMessageEntry, transportState, IOTHUB_BATCHSTATE_FAILED);
AzureIoTClient 4:e472f5ce3473 1106 free(mqttMsgEntry);
AzureIoTClient 4:e472f5ce3473 1107 }
AzureIoTClient 4:e472f5ce3473 1108 }
AzureIoTClient 4:e472f5ce3473 1109 }
AzureIoTClient 4:e472f5ce3473 1110 }
AzureIoTClient 4:e472f5ce3473 1111 currentListEntry = nextListEntry.Flink;
AzureIoTClient 4:e472f5ce3473 1112 }
Azure.IoT Build 0:5e72a75c31b8 1113
AzureIoTClient 4:e472f5ce3473 1114 currentListEntry = transportState->waitingToSend->Flink;
AzureIoTClient 4:e472f5ce3473 1115 /* Codes_SRS_IOTHUB_MQTT_TRANSPORT_07_027: [IoTHubTransportMqtt_DoWork shall inspect the “waitingToSend” DLIST passed in config structure.] */
AzureIoTClient 4:e472f5ce3473 1116 while (currentListEntry != transportState->waitingToSend)
AzureIoTClient 4:e472f5ce3473 1117 {
AzureIoTClient 4:e472f5ce3473 1118 IOTHUB_MESSAGE_LIST* iothubMsgList = containingRecord(currentListEntry, IOTHUB_MESSAGE_LIST, entry);
AzureIoTClient 4:e472f5ce3473 1119 DLIST_ENTRY savedFromCurrentListEntry;
AzureIoTClient 4:e472f5ce3473 1120 savedFromCurrentListEntry.Flink = currentListEntry->Flink;
Azure.IoT Build 0:5e72a75c31b8 1121
AzureIoTClient 4:e472f5ce3473 1122 /* Codes_SRS_IOTHUB_MQTT_TRANSPORT_07_027: [IoTHubTransportMqtt_DoWork shall inspect the “waitingToSend” DLIST passed in config structure.] */
AzureIoTClient 4:e472f5ce3473 1123 size_t messageLength;
AzureIoTClient 4:e472f5ce3473 1124 const unsigned char* messagePayload = RetrieveMessagePayload(iothubMsgList->messageHandle, &messageLength);
AzureIoTClient 4:e472f5ce3473 1125 if (messageLength == 0 || messagePayload == NULL)
AzureIoTClient 4:e472f5ce3473 1126 {
AzureIoTClient 4:e472f5ce3473 1127 LogError("Failure result from IoTHubMessage_GetData");
AzureIoTClient 4:e472f5ce3473 1128 }
AzureIoTClient 4:e472f5ce3473 1129 else
AzureIoTClient 4:e472f5ce3473 1130 {
AzureIoTClient 4:e472f5ce3473 1131 /* Codes_SRS_IOTHUB_MQTT_TRANSPORT_07_029: [IoTHubTransportMqtt_DoWork shall create a MQTT_MESSAGE_HANDLE and pass this to a call to mqtt_client_publish.] */
AzureIoTClient 4:e472f5ce3473 1132 MQTT_MESSAGE_DETAILS_LIST* mqttMsgEntry = (MQTT_MESSAGE_DETAILS_LIST*)malloc(sizeof(MQTT_MESSAGE_DETAILS_LIST));
AzureIoTClient 4:e472f5ce3473 1133 if (mqttMsgEntry == NULL)
AzureIoTClient 4:e472f5ce3473 1134 {
AzureIoTClient 4:e472f5ce3473 1135 LogError("Allocation Error: Failure allocating MQTT Message Detail List.");
AzureIoTClient 4:e472f5ce3473 1136 }
AzureIoTClient 4:e472f5ce3473 1137 else
AzureIoTClient 4:e472f5ce3473 1138 {
AzureIoTClient 4:e472f5ce3473 1139 mqttMsgEntry->retryCount = 0;
AzureIoTClient 4:e472f5ce3473 1140 mqttMsgEntry->msgPacketId = transportState->packetId;
AzureIoTClient 4:e472f5ce3473 1141 mqttMsgEntry->iotHubMessageEntry = iothubMsgList;
Azure.IoT Build 0:5e72a75c31b8 1142
AzureIoTClient 4:e472f5ce3473 1143 if (publishMqttMessage(transportState, mqttMsgEntry, messagePayload, messageLength) != 0)
AzureIoTClient 4:e472f5ce3473 1144 {
AzureIoTClient 4:e472f5ce3473 1145 (void)(DList_RemoveEntryList(currentListEntry));
AzureIoTClient 4:e472f5ce3473 1146 sendMsgComplete(iothubMsgList, transportState, IOTHUB_BATCHSTATE_FAILED);
AzureIoTClient 4:e472f5ce3473 1147 free(mqttMsgEntry);
AzureIoTClient 4:e472f5ce3473 1148 }
AzureIoTClient 4:e472f5ce3473 1149 else
AzureIoTClient 4:e472f5ce3473 1150 {
AzureIoTClient 4:e472f5ce3473 1151 (void)(DList_RemoveEntryList(currentListEntry));
AzureIoTClient 4:e472f5ce3473 1152 DList_InsertTailList(&(transportState->waitingForAck), &(mqttMsgEntry->entry));
AzureIoTClient 4:e472f5ce3473 1153 }
AzureIoTClient 4:e472f5ce3473 1154 }
AzureIoTClient 4:e472f5ce3473 1155 }
AzureIoTClient 4:e472f5ce3473 1156 currentListEntry = savedFromCurrentListEntry.Flink;
AzureIoTClient 4:e472f5ce3473 1157 }
AzureIoTClient 4:e472f5ce3473 1158 }
AzureIoTClient 4:e472f5ce3473 1159 /* Codes_SRS_IOTHUB_MQTT_TRANSPORT_07_030: [IoTHubTransportMqtt_DoWork shall call mqtt_client_dowork everytime it is called if it is connected.] */
AzureIoTClient 4:e472f5ce3473 1160 mqtt_client_dowork(transportState->mqttClient);
AzureIoTClient 4:e472f5ce3473 1161 }
AzureIoTClient 4:e472f5ce3473 1162 }
Azure.IoT Build 0:5e72a75c31b8 1163 }
Azure.IoT Build 0:5e72a75c31b8 1164
AzureIoTClient 4:e472f5ce3473 1165 static IOTHUB_CLIENT_RESULT IoTHubTransportMqtt_GetSendStatus(IOTHUB_DEVICE_HANDLE handle, IOTHUB_CLIENT_STATUS *iotHubClientStatus)
Azure.IoT Build 0:5e72a75c31b8 1166 {
AzureIoTClient 4:e472f5ce3473 1167 IOTHUB_CLIENT_RESULT result;
Azure.IoT Build 0:5e72a75c31b8 1168
AzureIoTClient 4:e472f5ce3473 1169 if (handle == NULL || iotHubClientStatus == NULL)
AzureIoTClient 4:e472f5ce3473 1170 {
AzureIoTClient 4:e472f5ce3473 1171 /* Codes_SRS_IOTHUB_MQTT_TRANSPORT_07_023: [IoTHubTransportMqtt_GetSendStatus shall return IOTHUB_CLIENT_INVALID_ARG if called with NULL parameter.] */
AzureIoTClient 4:e472f5ce3473 1172 LogError("invalid arument.");
AzureIoTClient 4:e472f5ce3473 1173 result = IOTHUB_CLIENT_INVALID_ARG;
AzureIoTClient 4:e472f5ce3473 1174 }
AzureIoTClient 4:e472f5ce3473 1175 else
AzureIoTClient 4:e472f5ce3473 1176 {
AzureIoTClient 4:e472f5ce3473 1177 MQTTTRANSPORT_HANDLE_DATA* handleData = (MQTTTRANSPORT_HANDLE_DATA*)handle;
AzureIoTClient 4:e472f5ce3473 1178 if (!DList_IsListEmpty(handleData->waitingToSend) || !DList_IsListEmpty(&(handleData->waitingForAck)))
AzureIoTClient 4:e472f5ce3473 1179 {
AzureIoTClient 4:e472f5ce3473 1180 /* Codes_SRS_IOTHUB_MQTT_TRANSPORT_07_025: [IoTHubTransportMqtt_GetSendStatus shall return IOTHUB_CLIENT_OK and status IOTHUB_CLIENT_SEND_STATUS_BUSY if there are currently event items to be sent or being sent.] */
AzureIoTClient 4:e472f5ce3473 1181 *iotHubClientStatus = IOTHUB_CLIENT_SEND_STATUS_BUSY;
AzureIoTClient 4:e472f5ce3473 1182 }
AzureIoTClient 4:e472f5ce3473 1183 else
AzureIoTClient 4:e472f5ce3473 1184 {
AzureIoTClient 4:e472f5ce3473 1185 /* Codes_SRS_IOTHUB_MQTT_TRANSPORT_07_024: [IoTHubTransportMqtt_GetSendStatus shall return IOTHUB_CLIENT_OK and status IOTHUB_CLIENT_SEND_STATUS_IDLE if there are currently no event items to be sent or being sent.] */
AzureIoTClient 4:e472f5ce3473 1186 *iotHubClientStatus = IOTHUB_CLIENT_SEND_STATUS_IDLE;
AzureIoTClient 4:e472f5ce3473 1187 }
AzureIoTClient 4:e472f5ce3473 1188 result = IOTHUB_CLIENT_OK;
AzureIoTClient 4:e472f5ce3473 1189 }
AzureIoTClient 4:e472f5ce3473 1190 return result;
Azure.IoT Build 0:5e72a75c31b8 1191 }
Azure.IoT Build 0:5e72a75c31b8 1192
AzureIoTClient 4:e472f5ce3473 1193 static IOTHUB_CLIENT_RESULT IoTHubTransportMqtt_SetOption(TRANSPORT_LL_HANDLE handle, const char* option, const void* value)
Azure.IoT Build 0:5e72a75c31b8 1194 {
AzureIoTClient 4:e472f5ce3473 1195 /* Codes_SRS_IOTHUB_MQTT_TRANSPORT_07_021: [If any parameter is NULL then IoTHubTransportMqtt_SetOption shall return IOTHUB_CLIENT_INVALID_ARG.] */
AzureIoTClient 4:e472f5ce3473 1196 IOTHUB_CLIENT_RESULT result;
AzureIoTClient 4:e472f5ce3473 1197 if (
AzureIoTClient 4:e472f5ce3473 1198 (handle == NULL) ||
AzureIoTClient 4:e472f5ce3473 1199 (option == NULL) ||
AzureIoTClient 4:e472f5ce3473 1200 (value == NULL)
AzureIoTClient 4:e472f5ce3473 1201 )
AzureIoTClient 4:e472f5ce3473 1202 {
AzureIoTClient 4:e472f5ce3473 1203 result = IOTHUB_CLIENT_INVALID_ARG;
AzureIoTClient 4:e472f5ce3473 1204 LogError("invalid parameter (NULL) passed to clientTransportAMQP_SetOption.");
AzureIoTClient 4:e472f5ce3473 1205 }
AzureIoTClient 4:e472f5ce3473 1206 else
AzureIoTClient 4:e472f5ce3473 1207 {
AzureIoTClient 4:e472f5ce3473 1208 MQTTTRANSPORT_HANDLE_DATA* transportState = (MQTTTRANSPORT_HANDLE_DATA*)handle;
AzureIoTClient 4:e472f5ce3473 1209 /* Codes_SRS_IOTHUB_MQTT_TRANSPORT_07_031: [If the option parameter is set to "logtrace" then the value shall be a bool_ptr and the value will determine if the mqtt client log is on or off.] */
AzureIoTClient 4:e472f5ce3473 1210 if (strcmp("logtrace", option) == 0)
AzureIoTClient 4:e472f5ce3473 1211 {
AzureIoTClient 4:e472f5ce3473 1212 bool* traceVal = (bool*)value;
AzureIoTClient 4:e472f5ce3473 1213 mqtt_client_set_trace(transportState->mqttClient, *traceVal, *traceVal);
AzureIoTClient 4:e472f5ce3473 1214 result = IOTHUB_CLIENT_OK;
AzureIoTClient 4:e472f5ce3473 1215 }
AzureIoTClient 4:e472f5ce3473 1216 else if (strcmp("keepalive", option) == 0)
AzureIoTClient 4:e472f5ce3473 1217 {
AzureIoTClient 4:e472f5ce3473 1218 /* Codes_SRS_IOTHUB_MQTT_TRANSPORT_07_036: [If the option parameter is set to "keepalive" then the value shall be a int_ptr and the value will determine the mqtt keepalive time that is set for pings.] */
AzureIoTClient 4:e472f5ce3473 1219 int* keepAliveOption = (int*)value;
AzureIoTClient 4:e472f5ce3473 1220 /* Codes_SRS_IOTHUB_MQTT_TRANSPORT_07_037 : [If the option parameter is set to supplied int_ptr keepalive is the same value as the existing keepalive then IoTHubTransportMqtt_SetOption shall do nothing.] */
AzureIoTClient 4:e472f5ce3473 1221 if (*keepAliveOption != transportState->keepAliveValue)
AzureIoTClient 4:e472f5ce3473 1222 {
AzureIoTClient 4:e472f5ce3473 1223 transportState->keepAliveValue = *keepAliveOption;
AzureIoTClient 4:e472f5ce3473 1224 if (transportState->connected)
AzureIoTClient 4:e472f5ce3473 1225 {
AzureIoTClient 4:e472f5ce3473 1226 /* Codes_SRS_IOTHUB_MQTT_TRANSPORT_07_038: [If the client is connected when the keepalive is set then IoTHubTransportMqtt_SetOption shall disconnect and reconnect with the specified keepalive value.] */
AzureIoTClient 4:e472f5ce3473 1227 DisconnectFromClient(transportState);
AzureIoTClient 4:e472f5ce3473 1228 }
AzureIoTClient 4:e472f5ce3473 1229 }
AzureIoTClient 4:e472f5ce3473 1230 result = IOTHUB_CLIENT_OK;
AzureIoTClient 4:e472f5ce3473 1231 }
AzureIoTClient 4:e472f5ce3473 1232 else
AzureIoTClient 4:e472f5ce3473 1233 {
AzureIoTClient 4:e472f5ce3473 1234 /* Codes_SRS_IOTHUB_MQTT_TRANSPORT_07_032: [IoTHubTransportMqtt_SetOption shall pass down the option to xio_setoption if the option parameter is not a known option string for the MQTT transport.] */
AzureIoTClient 4:e472f5ce3473 1235 if (GetTransportProviderIfNecessary(transportState) == 0)
AzureIoTClient 4:e472f5ce3473 1236 {
AzureIoTClient 4:e472f5ce3473 1237 if (xio_setoption(transportState->xioTransport, option, value) == 0)
AzureIoTClient 4:e472f5ce3473 1238 {
AzureIoTClient 4:e472f5ce3473 1239 result = IOTHUB_CLIENT_OK;
AzureIoTClient 4:e472f5ce3473 1240 }
AzureIoTClient 4:e472f5ce3473 1241 else
AzureIoTClient 4:e472f5ce3473 1242 {
AzureIoTClient 4:e472f5ce3473 1243 /* Codes_SRS_IOTHUB_MQTT_TRANSPORT_07_132: [IoTHubTransportMqtt_SetOption shall return IOTHUB_CLIENT_INVALID_ARG xio_setoption fails] */
AzureIoTClient 4:e472f5ce3473 1244 result = IOTHUB_CLIENT_INVALID_ARG;
AzureIoTClient 4:e472f5ce3473 1245 }
AzureIoTClient 4:e472f5ce3473 1246 }
AzureIoTClient 4:e472f5ce3473 1247 else
AzureIoTClient 4:e472f5ce3473 1248 {
AzureIoTClient 4:e472f5ce3473 1249 result = IOTHUB_CLIENT_ERROR;
AzureIoTClient 4:e472f5ce3473 1250 }
AzureIoTClient 4:e472f5ce3473 1251 }
AzureIoTClient 4:e472f5ce3473 1252 }
AzureIoTClient 4:e472f5ce3473 1253 return result;
Azure.IoT Build 0:5e72a75c31b8 1254 }
Azure.IoT Build 0:5e72a75c31b8 1255
AzureIoTClient 4:e472f5ce3473 1256 static IOTHUB_DEVICE_HANDLE IoTHubTransportMqtt_Register(TRANSPORT_LL_HANDLE handle, const IOTHUB_DEVICE_CONFIG* device, IOTHUB_CLIENT_LL_HANDLE iotHubClientHandle, PDLIST_ENTRY waitingToSend)
Azure.IoT Build 0:5e72a75c31b8 1257 {
AzureIoTClient 4:e472f5ce3473 1258 IOTHUB_DEVICE_HANDLE result;
AzureIoTClient 4:e472f5ce3473 1259 // Codes_SRS_IOTHUB_MQTT_TRANSPORT_17_001: [ IoTHubTransportMqtt_Register shall return NULL if the TRANSPORT_LL_HANDLE is NULL.]
AzureIoTClient 4:e472f5ce3473 1260 // Codes_SRS_IOTHUB_MQTT_TRANSPORT_17_002: [ IoTHubTransportMqtt_Register shall return NULL if device or waitingToSend are NULL.]
AzureIoTClient 4:e472f5ce3473 1261 if ((handle == NULL) || (device == NULL) || (waitingToSend == NULL))
AzureIoTClient 4:e472f5ce3473 1262 {
AzureIoTClient 3:40f482ed0be8 1263 LogError("IoTHubTransportMqtt_Register: handle, device or waitingToSend is NULL.");
Azure.IoT Build 0:5e72a75c31b8 1264 result = NULL;
AzureIoTClient 4:e472f5ce3473 1265 }
AzureIoTClient 4:e472f5ce3473 1266 else
AzureIoTClient 4:e472f5ce3473 1267 {
AzureIoTClient 4:e472f5ce3473 1268 MQTTTRANSPORT_HANDLE_DATA* transportState = (MQTTTRANSPORT_HANDLE_DATA*)handle;
Azure.IoT Build 0:5e72a75c31b8 1269
AzureIoTClient 4:e472f5ce3473 1270 // Codes_SRS_IOTHUB_MQTT_TRANSPORT_03_001: [ IoTHubTransportMqtt_Register shall return NULL if deviceId, or both deviceKey and deviceSasToken are NULL.]
AzureIoTClient 4:e472f5ce3473 1271 if (device->deviceId == NULL)
AzureIoTClient 4:e472f5ce3473 1272 {
AzureIoTClient 3:40f482ed0be8 1273 LogError("IoTHubTransportMqtt_Register: deviceId is NULL.");
AzureIoTClient 3:40f482ed0be8 1274 result = NULL;
AzureIoTClient 4:e472f5ce3473 1275 }
AzureIoTClient 4:e472f5ce3473 1276 else if ((device->deviceKey == NULL) && (device->deviceSasToken == NULL))
AzureIoTClient 4:e472f5ce3473 1277 {
AzureIoTClient 3:40f482ed0be8 1278 LogError("IoTHubTransportMqtt_Register: deviceKey and deviceSasToken are NULL.");
AzureIoTClient 3:40f482ed0be8 1279 result = NULL;
AzureIoTClient 4:e472f5ce3473 1280 }
AzureIoTClient 4:e472f5ce3473 1281 // Codes_SRS_IOTHUB_MQTT_TRANSPORT_03_002: [ IoTHubTransportMqtt_Register shall return NULL if both deviceKey and deviceSasToken are provided.]
AzureIoTClient 4:e472f5ce3473 1282 else if ((device->deviceKey != NULL) && (device->deviceSasToken != NULL))
AzureIoTClient 4:e472f5ce3473 1283 {
AzureIoTClient 3:40f482ed0be8 1284 LogError("IoTHubTransportMqtt_Register: Both deviceKey and deviceSasToken are defined. Only one can be used.");
Azure.IoT Build 0:5e72a75c31b8 1285 result = NULL;
AzureIoTClient 4:e472f5ce3473 1286 }
AzureIoTClient 4:e472f5ce3473 1287 else
AzureIoTClient 4:e472f5ce3473 1288 {
AzureIoTClient 4:e472f5ce3473 1289 // Codes_SRS_IOTHUB_MQTT_TRANSPORT_17_003: [ IoTHubTransportMqtt_Register shall return NULL if deviceId or deviceKey do not match the deviceId and deviceKey passed in during IoTHubTransportMqtt_Create.]
AzureIoTClient 4:e472f5ce3473 1290 if (strcmp(STRING_c_str(transportState->device_id), device->deviceId) != 0)
AzureIoTClient 4:e472f5ce3473 1291 {
AzureIoTClient 3:40f482ed0be8 1292 LogError("IoTHubTransportMqtt_Register: deviceId does not match.");
AzureIoTClient 3:40f482ed0be8 1293 result = NULL;
AzureIoTClient 4:e472f5ce3473 1294 }
AzureIoTClient 4:e472f5ce3473 1295 else if ((device->deviceKey != NULL) && (strcmp(STRING_c_str(transportState->device_key), device->deviceKey) != 0))
AzureIoTClient 4:e472f5ce3473 1296 {
AzureIoTClient 3:40f482ed0be8 1297 LogError("IoTHubTransportMqtt_Register: deviceKey does not match.");
Azure.IoT Build 0:5e72a75c31b8 1298 result = NULL;
AzureIoTClient 4:e472f5ce3473 1299 }
AzureIoTClient 4:e472f5ce3473 1300 else
AzureIoTClient 4:e472f5ce3473 1301 {
AzureIoTClient 4:e472f5ce3473 1302 if (transportState->isRegistered == true)
AzureIoTClient 4:e472f5ce3473 1303 {
AzureIoTClient 4:e472f5ce3473 1304 LogError("Transport already has device registered by id: [%s]", device->deviceId);
AzureIoTClient 4:e472f5ce3473 1305 result = NULL;
AzureIoTClient 4:e472f5ce3473 1306 }
AzureIoTClient 4:e472f5ce3473 1307 else
AzureIoTClient 4:e472f5ce3473 1308 {
AzureIoTClient 4:e472f5ce3473 1309 transportState->isRegistered = true;
AzureIoTClient 4:e472f5ce3473 1310 // Codes_SRS_IOTHUB_MQTT_TRANSPORT_17_004: [ IoTHubTransportMqtt_Register shall return the TRANSPORT_LL_HANDLE as the IOTHUB_DEVICE_HANDLE. ]
AzureIoTClient 4:e472f5ce3473 1311 result = (IOTHUB_DEVICE_HANDLE)handle;
AzureIoTClient 4:e472f5ce3473 1312 }
AzureIoTClient 4:e472f5ce3473 1313 }
AzureIoTClient 4:e472f5ce3473 1314 }
AzureIoTClient 4:e472f5ce3473 1315 }
Azure.IoT Build 0:5e72a75c31b8 1316
AzureIoTClient 4:e472f5ce3473 1317 return result;
Azure.IoT Build 0:5e72a75c31b8 1318 }
Azure.IoT Build 0:5e72a75c31b8 1319
Azure.IoT Build 0:5e72a75c31b8 1320 // Codes_SRS_IOTHUB_MQTT_TRANSPORT_17_005: [ IoTHubTransportMqtt_Unregister shall return. ]
AzureIoTClient 4:e472f5ce3473 1321 static void IoTHubTransportMqtt_Unregister(IOTHUB_DEVICE_HANDLE deviceHandle)
Azure.IoT Build 0:5e72a75c31b8 1322 {
AzureIoTClient 4:e472f5ce3473 1323 if (deviceHandle != NULL)
AzureIoTClient 4:e472f5ce3473 1324 {
AzureIoTClient 4:e472f5ce3473 1325 MQTTTRANSPORT_HANDLE_DATA* transportState = (MQTTTRANSPORT_HANDLE_DATA*)deviceHandle;
Azure.IoT Build 0:5e72a75c31b8 1326
AzureIoTClient 4:e472f5ce3473 1327 transportState->isRegistered = false;
AzureIoTClient 4:e472f5ce3473 1328 }
Azure.IoT Build 0:5e72a75c31b8 1329 }
Azure.IoT Build 0:5e72a75c31b8 1330
AzureIoTClient 4:e472f5ce3473 1331 static STRING_HANDLE IoTHubTransportMqtt_GetHostname(TRANSPORT_LL_HANDLE handle)
AzureIoTClient 4:e472f5ce3473 1332 {
AzureIoTClient 4:e472f5ce3473 1333 STRING_HANDLE result;
AzureIoTClient 4:e472f5ce3473 1334 /*Codes_SRS_IOTHUB_MQTT_TRANSPORT_02_001: [ If handle is NULL then IoTHubTransportMqtt_GetHostname shall fail and return NULL. ]*/
AzureIoTClient 4:e472f5ce3473 1335 if (handle == NULL)
AzureIoTClient 4:e472f5ce3473 1336 {
AzureIoTClient 4:e472f5ce3473 1337 result = NULL;
AzureIoTClient 4:e472f5ce3473 1338 }
AzureIoTClient 4:e472f5ce3473 1339 else
AzureIoTClient 4:e472f5ce3473 1340 {
AzureIoTClient 4:e472f5ce3473 1341 /*Codes_SRS_IOTHUB_MQTT_TRANSPORT_02_002: [ Otherwise IoTHubTransportMqtt_GetHostname shall return a non-NULL STRING_HANDLE containg the hostname. ]*/
AzureIoTClient 4:e472f5ce3473 1342 result = ((MQTTTRANSPORT_HANDLE_DATA*)handle)->hostAddress;
AzureIoTClient 4:e472f5ce3473 1343 }
AzureIoTClient 4:e472f5ce3473 1344 return result;
AzureIoTClient 4:e472f5ce3473 1345 }
AzureIoTClient 4:e472f5ce3473 1346
AzureIoTClient 4:e472f5ce3473 1347 static TRANSPORT_PROVIDER myfunc = {
AzureIoTClient 4:e472f5ce3473 1348 IoTHubTransportMqtt_GetHostname,
AzureIoTClient 4:e472f5ce3473 1349 IoTHubTransportMqtt_SetOption,
AzureIoTClient 4:e472f5ce3473 1350 IoTHubTransportMqtt_Create,
AzureIoTClient 4:e472f5ce3473 1351 IoTHubTransportMqtt_Destroy,
AzureIoTClient 4:e472f5ce3473 1352 IoTHubTransportMqtt_Register,
AzureIoTClient 4:e472f5ce3473 1353 IoTHubTransportMqtt_Unregister,
AzureIoTClient 4:e472f5ce3473 1354 IoTHubTransportMqtt_Subscribe,
AzureIoTClient 4:e472f5ce3473 1355 IoTHubTransportMqtt_Unsubscribe,
AzureIoTClient 4:e472f5ce3473 1356 IoTHubTransportMqtt_DoWork,
AzureIoTClient 4:e472f5ce3473 1357 IoTHubTransportMqtt_GetSendStatus
Azure.IoT Build 0:5e72a75c31b8 1358 };
Azure.IoT Build 0:5e72a75c31b8 1359
Azure.IoT Build 0:5e72a75c31b8 1360 /* Codes_SRS_IOTHUB_MQTT_TRANSPORT_07_022: [This function shall return a pointer to a structure of type TRANSPORT_PROVIDER having the following values for it’s fields: IoTHubTransport_Create = IoTHubTransportMqtt_Create
Azure.IoT Build 0:5e72a75c31b8 1361 IoTHubTransport_Destroy = IoTHubTransportMqtt_Destroy
Azure.IoT Build 0:5e72a75c31b8 1362 IoTHubTransport_Subscribe = IoTHubTransportMqtt_Subscribe
Azure.IoT Build 0:5e72a75c31b8 1363 IoTHubTransport_Unsubscribe = IoTHubTransportMqtt_Unsubscribe
Azure.IoT Build 0:5e72a75c31b8 1364 IoTHubTransport_DoWork = IoTHubTransportMqtt_DoWork
Azure.IoT Build 0:5e72a75c31b8 1365 IoTHubTransport_SetOption = IoTHubTransportMqtt_SetOption] */
AzureIoTClient 4:e472f5ce3473 1366 extern const TRANSPORT_PROVIDER* MQTT_Protocol(void)
Azure.IoT Build 0:5e72a75c31b8 1367 {
AzureIoTClient 4:e472f5ce3473 1368 return &myfunc;
Azure.IoT Build 0:5e72a75c31b8 1369 }