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@5:73603e7a6542, 2016-07-01 (annotated)

Committer:
Azure.IoT Build
Date:
Fri Jul 01 10:42:25 2016 -0700
Revision:
5:73603e7a6542
Parent:
4:e472f5ce3473
Child:
6:16875b609849
1.0.10

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 5:73603e7a6542 10 #include "azure_c_shared_utility/xlogging.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 5:73603e7a6542 113 static void sendMsgComplete(IOTHUB_MESSAGE_LIST* iothubMsgList, PMQTTTRANSPORT_HANDLE_DATA transportState, IOTHUB_CLIENT_CONFIRMATION_RESULT confirmResult)
Azure.IoT Build 0:5e72a75c31b8 114 {
AzureIoTClient 4:e472f5ce3473 115 DLIST_ENTRY messageCompleted;
AzureIoTClient 4:e472f5ce3473 116 DList_InitializeListHead(&messageCompleted);
AzureIoTClient 4:e472f5ce3473 117 DList_InsertTailList(&messageCompleted, &(iothubMsgList->entry));
Azure.IoT Build 5:73603e7a6542 118 IoTHubClient_LL_SendComplete(transportState->llClientHandle, &messageCompleted, confirmResult);
Azure.IoT Build 0:5e72a75c31b8 119 }
Azure.IoT Build 0:5e72a75c31b8 120
AzureIoTClient 2:9db4da50abaa 121 static STRING_HANDLE addPropertiesTouMqttMessage(IOTHUB_MESSAGE_HANDLE iothub_message_handle, const char* eventTopic)
AzureIoTClient 2:9db4da50abaa 122 {
AzureIoTClient 4:e472f5ce3473 123 STRING_HANDLE result = STRING_construct(eventTopic);
AzureIoTClient 4:e472f5ce3473 124 const char* const* propertyKeys;
AzureIoTClient 4:e472f5ce3473 125 const char* const* propertyValues;
AzureIoTClient 4:e472f5ce3473 126 size_t propertyCount;
AzureIoTClient 2:9db4da50abaa 127
AzureIoTClient 4:e472f5ce3473 128 // Construct Properties
AzureIoTClient 4:e472f5ce3473 129 MAP_HANDLE properties_map = IoTHubMessage_Properties(iothub_message_handle);
AzureIoTClient 4:e472f5ce3473 130 if (properties_map != NULL)
AzureIoTClient 4:e472f5ce3473 131 {
AzureIoTClient 4:e472f5ce3473 132 if (Map_GetInternals(properties_map, &propertyKeys, &propertyValues, &propertyCount) != MAP_OK)
AzureIoTClient 4:e472f5ce3473 133 {
AzureIoTClient 4:e472f5ce3473 134 LogError("Failed to get the internals of the property map.");
AzureIoTClient 4:e472f5ce3473 135 STRING_delete(result);
AzureIoTClient 4:e472f5ce3473 136 result = NULL;
AzureIoTClient 4:e472f5ce3473 137 }
AzureIoTClient 4:e472f5ce3473 138 else
AzureIoTClient 4:e472f5ce3473 139 {
AzureIoTClient 4:e472f5ce3473 140 if (propertyCount != 0)
AzureIoTClient 4:e472f5ce3473 141 {
AzureIoTClient 4:e472f5ce3473 142 for (size_t index = 0; index < propertyCount && result != NULL; index++)
AzureIoTClient 4:e472f5ce3473 143 {
AzureIoTClient 4:e472f5ce3473 144 size_t len = strlen(propertyKeys[index]) + strlen(propertyValues[index]) + 2;
AzureIoTClient 4:e472f5ce3473 145 char* propValues = malloc(len+1);
AzureIoTClient 4:e472f5ce3473 146 if (propValues == NULL)
AzureIoTClient 4:e472f5ce3473 147 {
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 sprintf(propValues, "%s=%s%s", propertyKeys[index], propertyValues[index], propertyCount - 1 == index ? "" : "&");
AzureIoTClient 4:e472f5ce3473 154 if (STRING_concat(result, propValues) != 0)
AzureIoTClient 4:e472f5ce3473 155 {
AzureIoTClient 4:e472f5ce3473 156 STRING_delete(result);
AzureIoTClient 4:e472f5ce3473 157 result = NULL;
AzureIoTClient 4:e472f5ce3473 158 }
AzureIoTClient 4:e472f5ce3473 159 free(propValues);
AzureIoTClient 4:e472f5ce3473 160 }
AzureIoTClient 4:e472f5ce3473 161 }
AzureIoTClient 4:e472f5ce3473 162 }
AzureIoTClient 4:e472f5ce3473 163 }
AzureIoTClient 4:e472f5ce3473 164 }
AzureIoTClient 4:e472f5ce3473 165 return result;
AzureIoTClient 2:9db4da50abaa 166 }
AzureIoTClient 2:9db4da50abaa 167
Azure.IoT Build 0:5e72a75c31b8 168 static int publishMqttMessage(PMQTTTRANSPORT_HANDLE_DATA transportState, MQTT_MESSAGE_DETAILS_LIST* mqttMsgEntry, const unsigned char* payload, size_t len)
Azure.IoT Build 0:5e72a75c31b8 169 {
AzureIoTClient 4:e472f5ce3473 170 int result;
AzureIoTClient 4:e472f5ce3473 171 STRING_HANDLE msgTopic = addPropertiesTouMqttMessage(mqttMsgEntry->iotHubMessageEntry->messageHandle, STRING_c_str(transportState->mqttEventTopic));
AzureIoTClient 4:e472f5ce3473 172 if (msgTopic == NULL)
AzureIoTClient 4:e472f5ce3473 173 {
AzureIoTClient 4:e472f5ce3473 174 result = __LINE__;
AzureIoTClient 4:e472f5ce3473 175 }
AzureIoTClient 4:e472f5ce3473 176 else
AzureIoTClient 4:e472f5ce3473 177 {
AzureIoTClient 4:e472f5ce3473 178 MQTT_MESSAGE_HANDLE mqttMsg = mqttmessage_create(transportState->packetId++, STRING_c_str(msgTopic), DELIVER_AT_LEAST_ONCE, payload, len);
AzureIoTClient 4:e472f5ce3473 179 if (mqttMsg == NULL)
AzureIoTClient 4:e472f5ce3473 180 {
AzureIoTClient 4:e472f5ce3473 181 result = __LINE__;
AzureIoTClient 4:e472f5ce3473 182 }
AzureIoTClient 4:e472f5ce3473 183 else
AzureIoTClient 4:e472f5ce3473 184 {
AzureIoTClient 4:e472f5ce3473 185 if (mqtt_client_publish(transportState->mqttClient, mqttMsg) != 0)
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 mqttMsgEntry->retryCount++;
AzureIoTClient 4:e472f5ce3473 192 (void)tickcounter_get_current_ms(g_msgTickCounter, &mqttMsgEntry->msgPublishTime);
AzureIoTClient 4:e472f5ce3473 193 result = 0;
AzureIoTClient 4:e472f5ce3473 194 }
AzureIoTClient 4:e472f5ce3473 195 mqttmessage_destroy(mqttMsg);
AzureIoTClient 4:e472f5ce3473 196 }
AzureIoTClient 4:e472f5ce3473 197 STRING_delete(msgTopic);
AzureIoTClient 4:e472f5ce3473 198 }
AzureIoTClient 4:e472f5ce3473 199 return result;
AzureIoTClient 3:40f482ed0be8 200 }
AzureIoTClient 3:40f482ed0be8 201
AzureIoTClient 3:40f482ed0be8 202 static bool isSystemProperty(const char* tokenData)
AzureIoTClient 3:40f482ed0be8 203 {
AzureIoTClient 4:e472f5ce3473 204 bool result = false;
AzureIoTClient 4:e472f5ce3473 205 size_t propCount = sizeof(sysPropList)/sizeof(sysPropList[0]);
AzureIoTClient 4:e472f5ce3473 206 for (size_t index = 0; index < propCount; index++)
AzureIoTClient 4:e472f5ce3473 207 {
AzureIoTClient 4:e472f5ce3473 208 if (memcmp(tokenData, sysPropList[index].propName, sysPropList[index].propLength) == 0)
AzureIoTClient 4:e472f5ce3473 209 {
AzureIoTClient 4:e472f5ce3473 210 result = true;
AzureIoTClient 4:e472f5ce3473 211 break;
AzureIoTClient 4:e472f5ce3473 212 }
AzureIoTClient 4:e472f5ce3473 213 }
AzureIoTClient 4:e472f5ce3473 214 return result;
AzureIoTClient 3:40f482ed0be8 215 }
AzureIoTClient 3:40f482ed0be8 216
AzureIoTClient 3:40f482ed0be8 217 static int extractMqttProperties(IOTHUB_MESSAGE_HANDLE IoTHubMessage, MQTT_MESSAGE_HANDLE msgHandle)
AzureIoTClient 3:40f482ed0be8 218 {
AzureIoTClient 4:e472f5ce3473 219 int result;
AzureIoTClient 4:e472f5ce3473 220 STRING_HANDLE mqttTopic = STRING_construct(mqttmessage_getTopicName(msgHandle));
AzureIoTClient 3:40f482ed0be8 221
AzureIoTClient 4:e472f5ce3473 222 STRING_TOKENIZER_HANDLE token = STRING_TOKENIZER_create(mqttTopic);
AzureIoTClient 4:e472f5ce3473 223 if (token != NULL)
AzureIoTClient 4:e472f5ce3473 224 {
AzureIoTClient 4:e472f5ce3473 225 MAP_HANDLE propertyMap = IoTHubMessage_Properties(IoTHubMessage);
AzureIoTClient 4:e472f5ce3473 226 if (propertyMap == NULL)
AzureIoTClient 4:e472f5ce3473 227 {
AzureIoTClient 4:e472f5ce3473 228 LogError("Failure to retrieve IoTHubMessage_properties.");
AzureIoTClient 4:e472f5ce3473 229 result = __LINE__;
AzureIoTClient 4:e472f5ce3473 230 }
AzureIoTClient 4:e472f5ce3473 231 else
AzureIoTClient 4:e472f5ce3473 232 {
AzureIoTClient 4:e472f5ce3473 233 STRING_HANDLE output = STRING_new();
AzureIoTClient 4:e472f5ce3473 234 if (output == NULL)
AzureIoTClient 4:e472f5ce3473 235 {
AzureIoTClient 4:e472f5ce3473 236 LogError("Failure to allocate STRING_new.");
AzureIoTClient 4:e472f5ce3473 237 result = __LINE__;
AzureIoTClient 4:e472f5ce3473 238 }
AzureIoTClient 4:e472f5ce3473 239 else
AzureIoTClient 4:e472f5ce3473 240 {
AzureIoTClient 4:e472f5ce3473 241 result = 0;
AzureIoTClient 4:e472f5ce3473 242 while (STRING_TOKENIZER_get_next_token(token, output, PROPERTY_SEPARATOR) == 0 && result == 0)
AzureIoTClient 4:e472f5ce3473 243 {
AzureIoTClient 4:e472f5ce3473 244 const char* tokenData = STRING_c_str(output);
AzureIoTClient 4:e472f5ce3473 245 size_t tokenLen = strlen(tokenData);
AzureIoTClient 4:e472f5ce3473 246 if (tokenData == NULL || tokenLen == 0)
AzureIoTClient 4:e472f5ce3473 247 {
AzureIoTClient 4:e472f5ce3473 248 break;
AzureIoTClient 4:e472f5ce3473 249 }
AzureIoTClient 4:e472f5ce3473 250 else
AzureIoTClient 4:e472f5ce3473 251 {
AzureIoTClient 4:e472f5ce3473 252 if (!isSystemProperty(tokenData) )
AzureIoTClient 4:e472f5ce3473 253 {
AzureIoTClient 4:e472f5ce3473 254 const char* iterator = tokenData;
AzureIoTClient 4:e472f5ce3473 255 while (iterator != NULL && *iterator != '\0' && result == 0)
AzureIoTClient 4:e472f5ce3473 256 {
AzureIoTClient 4:e472f5ce3473 257 if (*iterator == '=')
AzureIoTClient 4:e472f5ce3473 258 {
AzureIoTClient 4:e472f5ce3473 259 size_t nameLen = iterator - tokenData;
AzureIoTClient 4:e472f5ce3473 260 char* propName = malloc(nameLen + 1);
AzureIoTClient 3:40f482ed0be8 261
AzureIoTClient 4:e472f5ce3473 262 size_t valLen = tokenLen - (nameLen + 1) + 1;
AzureIoTClient 4:e472f5ce3473 263 char* propValue = malloc(valLen + 1);
AzureIoTClient 3:40f482ed0be8 264
AzureIoTClient 4:e472f5ce3473 265 if (propName == NULL || propValue == NULL)
AzureIoTClient 4:e472f5ce3473 266 {
AzureIoTClient 4:e472f5ce3473 267 result = __LINE__;
AzureIoTClient 4:e472f5ce3473 268 }
AzureIoTClient 4:e472f5ce3473 269 else
AzureIoTClient 4:e472f5ce3473 270 {
AzureIoTClient 4:e472f5ce3473 271 strncpy(propName, tokenData, nameLen);
AzureIoTClient 4:e472f5ce3473 272 propName[nameLen] = '\0';
AzureIoTClient 3:40f482ed0be8 273
AzureIoTClient 4:e472f5ce3473 274 strncpy(propValue, iterator + 1, valLen);
AzureIoTClient 4:e472f5ce3473 275 propValue[valLen] = '\0';
AzureIoTClient 3:40f482ed0be8 276
AzureIoTClient 4:e472f5ce3473 277 if (Map_AddOrUpdate(propertyMap, propName, propValue) != MAP_OK)
AzureIoTClient 4:e472f5ce3473 278 {
AzureIoTClient 4:e472f5ce3473 279 LogError("Map_AddOrUpdate failed.");
AzureIoTClient 4:e472f5ce3473 280 result = __LINE__;
AzureIoTClient 4:e472f5ce3473 281 }
AzureIoTClient 4:e472f5ce3473 282 }
AzureIoTClient 4:e472f5ce3473 283 free(propName);
AzureIoTClient 4:e472f5ce3473 284 free(propValue);
AzureIoTClient 3:40f482ed0be8 285
AzureIoTClient 4:e472f5ce3473 286 break;
AzureIoTClient 4:e472f5ce3473 287 }
AzureIoTClient 4:e472f5ce3473 288 iterator++;
AzureIoTClient 4:e472f5ce3473 289 }
AzureIoTClient 4:e472f5ce3473 290 }
AzureIoTClient 4:e472f5ce3473 291 }
AzureIoTClient 4:e472f5ce3473 292 }
AzureIoTClient 4:e472f5ce3473 293 STRING_delete(output);
AzureIoTClient 4:e472f5ce3473 294 }
AzureIoTClient 4:e472f5ce3473 295 }
AzureIoTClient 4:e472f5ce3473 296 STRING_TOKENIZER_destroy(token);
AzureIoTClient 4:e472f5ce3473 297 }
AzureIoTClient 4:e472f5ce3473 298 else
AzureIoTClient 4:e472f5ce3473 299 {
AzureIoTClient 4:e472f5ce3473 300 LogError("Unable to create Tokenizer object.");
AzureIoTClient 4:e472f5ce3473 301 result = __LINE__;
AzureIoTClient 4:e472f5ce3473 302 }
AzureIoTClient 4:e472f5ce3473 303 STRING_delete(mqttTopic);
AzureIoTClient 3:40f482ed0be8 304
AzureIoTClient 4:e472f5ce3473 305 return result;
AzureIoTClient 3:40f482ed0be8 306 }
AzureIoTClient 3:40f482ed0be8 307
AzureIoTClient 3:40f482ed0be8 308 static void MqttRecvCallback(MQTT_MESSAGE_HANDLE msgHandle, void* callbackCtx)
AzureIoTClient 3:40f482ed0be8 309 {
AzureIoTClient 4:e472f5ce3473 310 if (msgHandle != NULL && callbackCtx != NULL)
AzureIoTClient 4:e472f5ce3473 311 {
AzureIoTClient 4:e472f5ce3473 312 const APP_PAYLOAD* appPayload = mqttmessage_getApplicationMsg(msgHandle);
AzureIoTClient 4:e472f5ce3473 313 IOTHUB_MESSAGE_HANDLE IoTHubMessage = IoTHubMessage_CreateFromByteArray(appPayload->message, appPayload->length);
AzureIoTClient 4:e472f5ce3473 314 if (IoTHubMessage == NULL)
AzureIoTClient 4:e472f5ce3473 315 {
AzureIoTClient 4:e472f5ce3473 316 LogError("IotHub Message creation has failed.");
AzureIoTClient 4:e472f5ce3473 317 }
AzureIoTClient 4:e472f5ce3473 318 else
AzureIoTClient 4:e472f5ce3473 319 {
AzureIoTClient 4:e472f5ce3473 320 // Will need to update this when the service has messages that can be rejected
AzureIoTClient 4:e472f5ce3473 321 (void)extractMqttProperties(IoTHubMessage, msgHandle);
AzureIoTClient 4:e472f5ce3473 322 PMQTTTRANSPORT_HANDLE_DATA transportData = (PMQTTTRANSPORT_HANDLE_DATA)callbackCtx;
AzureIoTClient 4:e472f5ce3473 323 if (IoTHubClient_LL_MessageCallback(transportData->llClientHandle, IoTHubMessage) != IOTHUBMESSAGE_ACCEPTED)
AzureIoTClient 4:e472f5ce3473 324 {
AzureIoTClient 4:e472f5ce3473 325 LogError("Event not accepted by our client.");
AzureIoTClient 4:e472f5ce3473 326 }
AzureIoTClient 4:e472f5ce3473 327 IoTHubMessage_Destroy(IoTHubMessage);
AzureIoTClient 4:e472f5ce3473 328 }
AzureIoTClient 4:e472f5ce3473 329 }
AzureIoTClient 3:40f482ed0be8 330 }
AzureIoTClient 3:40f482ed0be8 331
AzureIoTClient 3:40f482ed0be8 332 static void MqttOpCompleteCallback(MQTT_CLIENT_HANDLE handle, MQTT_CLIENT_EVENT_RESULT actionResult, const void* msgInfo, void* callbackCtx)
AzureIoTClient 3:40f482ed0be8 333 {
AzureIoTClient 4:e472f5ce3473 334 (void)handle;
AzureIoTClient 4:e472f5ce3473 335 if (callbackCtx != NULL)
AzureIoTClient 4:e472f5ce3473 336 {
AzureIoTClient 4:e472f5ce3473 337 PMQTTTRANSPORT_HANDLE_DATA transportData = (PMQTTTRANSPORT_HANDLE_DATA)callbackCtx;
AzureIoTClient 3:40f482ed0be8 338
AzureIoTClient 4:e472f5ce3473 339 switch (actionResult)
AzureIoTClient 4:e472f5ce3473 340 {
AzureIoTClient 4:e472f5ce3473 341 case MQTT_CLIENT_ON_PUBLISH_ACK:
AzureIoTClient 4:e472f5ce3473 342 case MQTT_CLIENT_ON_PUBLISH_COMP:
AzureIoTClient 4:e472f5ce3473 343 {
AzureIoTClient 4:e472f5ce3473 344 const PUBLISH_ACK* puback = (const PUBLISH_ACK*)msgInfo;
AzureIoTClient 4:e472f5ce3473 345 if (puback != NULL)
AzureIoTClient 4:e472f5ce3473 346 {
AzureIoTClient 4:e472f5ce3473 347 PDLIST_ENTRY currentListEntry = transportData->waitingForAck.Flink;
AzureIoTClient 4:e472f5ce3473 348 while (currentListEntry != &transportData->waitingForAck)
AzureIoTClient 4:e472f5ce3473 349 {
AzureIoTClient 4:e472f5ce3473 350 MQTT_MESSAGE_DETAILS_LIST* mqttMsgEntry = containingRecord(currentListEntry, MQTT_MESSAGE_DETAILS_LIST, entry);
AzureIoTClient 4:e472f5ce3473 351 DLIST_ENTRY saveListEntry;
AzureIoTClient 4:e472f5ce3473 352 saveListEntry.Flink = currentListEntry->Flink;
AzureIoTClient 3:40f482ed0be8 353
AzureIoTClient 4:e472f5ce3473 354 if (puback->packetId == mqttMsgEntry->msgPacketId)
AzureIoTClient 4:e472f5ce3473 355 {
AzureIoTClient 4:e472f5ce3473 356 (void)DList_RemoveEntryList(currentListEntry); //First remove the item from Waiting for Ack List.
Azure.IoT Build 5:73603e7a6542 357 sendMsgComplete(mqttMsgEntry->iotHubMessageEntry, transportData, IOTHUB_CLIENT_CONFIRMATION_OK);
AzureIoTClient 4:e472f5ce3473 358 free(mqttMsgEntry);
AzureIoTClient 4:e472f5ce3473 359 }
AzureIoTClient 4:e472f5ce3473 360 currentListEntry = saveListEntry.Flink;
AzureIoTClient 4:e472f5ce3473 361 }
AzureIoTClient 4:e472f5ce3473 362 }
AzureIoTClient 4:e472f5ce3473 363 break;
AzureIoTClient 4:e472f5ce3473 364 }
AzureIoTClient 4:e472f5ce3473 365 case MQTT_CLIENT_ON_CONNACK:
AzureIoTClient 4:e472f5ce3473 366 {
AzureIoTClient 4:e472f5ce3473 367 const CONNECT_ACK* connack = (const CONNECT_ACK*)msgInfo;
AzureIoTClient 4:e472f5ce3473 368 if (connack != NULL)
AzureIoTClient 4:e472f5ce3473 369 {
AzureIoTClient 4:e472f5ce3473 370 if (connack->returnCode == CONNECTION_ACCEPTED)
AzureIoTClient 4:e472f5ce3473 371 {
AzureIoTClient 4:e472f5ce3473 372 // The connect packet has been acked
AzureIoTClient 4:e472f5ce3473 373 transportData->currPacketState = CONNACK_TYPE;
AzureIoTClient 4:e472f5ce3473 374 }
AzureIoTClient 4:e472f5ce3473 375 else
AzureIoTClient 4:e472f5ce3473 376 {
AzureIoTClient 4:e472f5ce3473 377 LogError("Connection not accepted, return code: %d.", connack->returnCode);
AzureIoTClient 4:e472f5ce3473 378 (void)mqtt_client_disconnect(transportData->mqttClient);
AzureIoTClient 4:e472f5ce3473 379 transportData->connected = false;
AzureIoTClient 4:e472f5ce3473 380 transportData->currPacketState = PACKET_TYPE_ERROR;
AzureIoTClient 4:e472f5ce3473 381 }
AzureIoTClient 4:e472f5ce3473 382 }
AzureIoTClient 4:e472f5ce3473 383 else
AzureIoTClient 4:e472f5ce3473 384 {
AzureIoTClient 4:e472f5ce3473 385 LogError("MQTT_CLIENT_ON_CONNACK CONNACK parameter is NULL.");
AzureIoTClient 4:e472f5ce3473 386 }
AzureIoTClient 4:e472f5ce3473 387 break;
AzureIoTClient 4:e472f5ce3473 388 }
AzureIoTClient 4:e472f5ce3473 389 case MQTT_CLIENT_ON_SUBSCRIBE_ACK:
AzureIoTClient 4:e472f5ce3473 390 {
AzureIoTClient 4:e472f5ce3473 391 const SUBSCRIBE_ACK* suback = (const SUBSCRIBE_ACK*)msgInfo;
AzureIoTClient 4:e472f5ce3473 392 if (suback != NULL)
AzureIoTClient 4:e472f5ce3473 393 {
AzureIoTClient 4:e472f5ce3473 394 if (suback->qosCount == 1)
AzureIoTClient 4:e472f5ce3473 395 {
AzureIoTClient 4:e472f5ce3473 396 // The connect packet has been acked
AzureIoTClient 4:e472f5ce3473 397 transportData->currPacketState = SUBACK_TYPE;
AzureIoTClient 4:e472f5ce3473 398 }
AzureIoTClient 4:e472f5ce3473 399 else
AzureIoTClient 4:e472f5ce3473 400 {
AzureIoTClient 4:e472f5ce3473 401 LogError("QOS count was not expected: %d.", (int)suback->qosCount);
AzureIoTClient 4:e472f5ce3473 402 }
AzureIoTClient 4:e472f5ce3473 403 }
AzureIoTClient 4:e472f5ce3473 404 break;
AzureIoTClient 4:e472f5ce3473 405 }
AzureIoTClient 4:e472f5ce3473 406 case MQTT_CLIENT_ON_PUBLISH_RECV:
AzureIoTClient 4:e472f5ce3473 407 case MQTT_CLIENT_ON_PUBLISH_REL:
AzureIoTClient 4:e472f5ce3473 408 {
AzureIoTClient 4:e472f5ce3473 409 // Currently not used
AzureIoTClient 4:e472f5ce3473 410 break;
AzureIoTClient 4:e472f5ce3473 411 }
AzureIoTClient 4:e472f5ce3473 412 case MQTT_CLIENT_ON_DISCONNECT:
AzureIoTClient 4:e472f5ce3473 413 {
AzureIoTClient 4:e472f5ce3473 414 // Close the client so we can reconnect again
AzureIoTClient 4:e472f5ce3473 415 transportData->connected = false;
AzureIoTClient 4:e472f5ce3473 416 transportData->currPacketState = DISCONNECT_TYPE;
AzureIoTClient 4:e472f5ce3473 417 break;
AzureIoTClient 4:e472f5ce3473 418 }
AzureIoTClient 4:e472f5ce3473 419 case MQTT_CLIENT_NO_PING_RESPONSE:
AzureIoTClient 4:e472f5ce3473 420 LogError("Mqtt Ping Response was not encountered. Reconnecting device...");
AzureIoTClient 4:e472f5ce3473 421 case MQTT_CLIENT_ON_ERROR:
AzureIoTClient 4:e472f5ce3473 422 {
AzureIoTClient 4:e472f5ce3473 423 xio_close(transportData->xioTransport, NULL, NULL);
AzureIoTClient 4:e472f5ce3473 424 transportData->connected = false;
AzureIoTClient 4:e472f5ce3473 425 transportData->subscribed = false;
AzureIoTClient 4:e472f5ce3473 426 transportData->currPacketState = PACKET_TYPE_ERROR;
AzureIoTClient 4:e472f5ce3473 427 }
AzureIoTClient 4:e472f5ce3473 428 }
AzureIoTClient 4:e472f5ce3473 429 }
AzureIoTClient 3:40f482ed0be8 430 }
AzureIoTClient 3:40f482ed0be8 431
AzureIoTClient 3:40f482ed0be8 432 const XIO_HANDLE getIoTransportProvider(const char* fqdn, int port)
AzureIoTClient 3:40f482ed0be8 433 {
AzureIoTClient 4:e472f5ce3473 434 TLSIO_CONFIG tls_io_config = { fqdn, port };
AzureIoTClient 4:e472f5ce3473 435 const IO_INTERFACE_DESCRIPTION* io_interface_description = platform_get_default_tlsio();
Azure.IoT Build 5:73603e7a6542 436 return (void*)xio_create(io_interface_description, &tls_io_config);
AzureIoTClient 3:40f482ed0be8 437 }
AzureIoTClient 3:40f482ed0be8 438
AzureIoTClient 3:40f482ed0be8 439 static int SubscribeToMqttProtocol(PMQTTTRANSPORT_HANDLE_DATA transportState)
AzureIoTClient 3:40f482ed0be8 440 {
AzureIoTClient 4:e472f5ce3473 441 int result;
AzureIoTClient 3:40f482ed0be8 442
AzureIoTClient 4:e472f5ce3473 443 if (transportState->receiveMessages && !transportState->subscribed)
AzureIoTClient 4:e472f5ce3473 444 {
AzureIoTClient 4:e472f5ce3473 445 SUBSCRIBE_PAYLOAD subscribe[] = {
AzureIoTClient 4:e472f5ce3473 446 { STRING_c_str(transportState->mqttMessageTopic), DELIVER_AT_LEAST_ONCE }
AzureIoTClient 4:e472f5ce3473 447 };
AzureIoTClient 4:e472f5ce3473 448 /* Codes_SRS_IOTHUB_MQTT_TRANSPORT_07_016: [IoTHubTransportMqtt_Subscribe shall call mqtt_client_subscribe to subscribe to the Message Topic.] */
AzureIoTClient 4:e472f5ce3473 449 if (mqtt_client_subscribe(transportState->mqttClient, transportState->packetId++, subscribe, 1) != 0)
AzureIoTClient 4:e472f5ce3473 450 {
AzureIoTClient 4:e472f5ce3473 451 /* Codes_SRS_IOTHUB_MQTT_TRANSPORT_07_017: [Upon failure IoTHubTransportMqtt_Subscribe shall return a non-zero value.] */
AzureIoTClient 4:e472f5ce3473 452 result = __LINE__;
AzureIoTClient 4:e472f5ce3473 453 }
AzureIoTClient 4:e472f5ce3473 454 else
AzureIoTClient 4:e472f5ce3473 455 {
AzureIoTClient 4:e472f5ce3473 456 /* Codes_SRS_IOTHUB_MQTT_TRANSPORT_07_018: [On success IoTHubTransportMqtt_Subscribe shall return 0.] */
AzureIoTClient 4:e472f5ce3473 457 transportState->subscribed = true;
AzureIoTClient 4:e472f5ce3473 458 transportState->currPacketState = SUBSCRIBE_TYPE;
AzureIoTClient 4:e472f5ce3473 459 result = 0;
AzureIoTClient 4:e472f5ce3473 460 }
AzureIoTClient 4:e472f5ce3473 461 }
AzureIoTClient 4:e472f5ce3473 462 else
AzureIoTClient 4:e472f5ce3473 463 {
AzureIoTClient 4:e472f5ce3473 464 if (transportState->receiveMessages)
AzureIoTClient 4:e472f5ce3473 465 {
AzureIoTClient 4:e472f5ce3473 466 transportState->currPacketState = SUBSCRIBE_TYPE;
AzureIoTClient 4:e472f5ce3473 467 }
AzureIoTClient 4:e472f5ce3473 468 else
AzureIoTClient 4:e472f5ce3473 469 {
AzureIoTClient 4:e472f5ce3473 470 transportState->currPacketState = PUBLISH_TYPE;
AzureIoTClient 4:e472f5ce3473 471 }
AzureIoTClient 4:e472f5ce3473 472 }
AzureIoTClient 4:e472f5ce3473 473 return result;
AzureIoTClient 3:40f482ed0be8 474 }
AzureIoTClient 3:40f482ed0be8 475
AzureIoTClient 3:40f482ed0be8 476 static const unsigned char* RetrieveMessagePayload(IOTHUB_MESSAGE_HANDLE messageHandle, size_t* length)
AzureIoTClient 3:40f482ed0be8 477 {
AzureIoTClient 4:e472f5ce3473 478 const unsigned char* result;
AzureIoTClient 3:40f482ed0be8 479
AzureIoTClient 4:e472f5ce3473 480 IOTHUBMESSAGE_CONTENT_TYPE contentType = IoTHubMessage_GetContentType(messageHandle);
AzureIoTClient 4:e472f5ce3473 481 if (contentType == IOTHUBMESSAGE_BYTEARRAY)
AzureIoTClient 4:e472f5ce3473 482 {
AzureIoTClient 4:e472f5ce3473 483 if (IoTHubMessage_GetByteArray(messageHandle, &result, length) != IOTHUB_MESSAGE_OK)
AzureIoTClient 4:e472f5ce3473 484 {
AzureIoTClient 4:e472f5ce3473 485 LogError("Failure result from IoTHubMessage_GetByteArray");
AzureIoTClient 4:e472f5ce3473 486 result = NULL;
AzureIoTClient 4:e472f5ce3473 487 *length = 0;
AzureIoTClient 4:e472f5ce3473 488 }
AzureIoTClient 4:e472f5ce3473 489 }
AzureIoTClient 4:e472f5ce3473 490 else if (contentType == IOTHUBMESSAGE_STRING)
AzureIoTClient 4:e472f5ce3473 491 {
AzureIoTClient 4:e472f5ce3473 492 result = (const unsigned char*)IoTHubMessage_GetString(messageHandle);
AzureIoTClient 4:e472f5ce3473 493 if (result == NULL)
AzureIoTClient 4:e472f5ce3473 494 {
AzureIoTClient 4:e472f5ce3473 495 LogError("Failure result from IoTHubMessage_GetString");
AzureIoTClient 4:e472f5ce3473 496 result = NULL;
AzureIoTClient 4:e472f5ce3473 497 *length = 0;
AzureIoTClient 4:e472f5ce3473 498 }
AzureIoTClient 4:e472f5ce3473 499 else
AzureIoTClient 4:e472f5ce3473 500 {
AzureIoTClient 4:e472f5ce3473 501 *length = strlen((const char*)result);
AzureIoTClient 4:e472f5ce3473 502 }
AzureIoTClient 4:e472f5ce3473 503 }
AzureIoTClient 4:e472f5ce3473 504 else
AzureIoTClient 4:e472f5ce3473 505 {
AzureIoTClient 4:e472f5ce3473 506 result = NULL;
AzureIoTClient 4:e472f5ce3473 507 *length = 0;
AzureIoTClient 4:e472f5ce3473 508 }
AzureIoTClient 4:e472f5ce3473 509 return result;
AzureIoTClient 3:40f482ed0be8 510 }
AzureIoTClient 3:40f482ed0be8 511
AzureIoTClient 3:40f482ed0be8 512 static STRING_HANDLE ConstructSasToken(const char* iothubName, const char* iotHubSuffix, const char* deviceId)
AzureIoTClient 3:40f482ed0be8 513 {
AzureIoTClient 4:e472f5ce3473 514 STRING_HANDLE result;
AzureIoTClient 4:e472f5ce3473 515 size_t len = strlen(iothubName);
AzureIoTClient 4:e472f5ce3473 516 len += strlen(iotHubSuffix);
AzureIoTClient 4:e472f5ce3473 517 len += strlen(deviceId);
AzureIoTClient 3:40f482ed0be8 518
AzureIoTClient 4:e472f5ce3473 519 char* sasToken = malloc(len + SAS_TOKEN_DEFAULT_LEN + 1);
AzureIoTClient 4:e472f5ce3473 520 if (sasToken == NULL)
AzureIoTClient 4:e472f5ce3473 521 {
AzureIoTClient 4:e472f5ce3473 522 result = NULL;
AzureIoTClient 4:e472f5ce3473 523 }
AzureIoTClient 4:e472f5ce3473 524 else
AzureIoTClient 4:e472f5ce3473 525 {
AzureIoTClient 4:e472f5ce3473 526 (void)sprintf(sasToken, "%s.%s/devices/%s", iothubName, iotHubSuffix, deviceId);
AzureIoTClient 4:e472f5ce3473 527 result = STRING_construct(sasToken);
AzureIoTClient 4:e472f5ce3473 528 free(sasToken);
AzureIoTClient 4:e472f5ce3473 529 }
AzureIoTClient 4:e472f5ce3473 530 return result;
AzureIoTClient 3:40f482ed0be8 531 }
AzureIoTClient 3:40f482ed0be8 532
AzureIoTClient 3:40f482ed0be8 533 static STRING_HANDLE ConstructEventTopic(const char* deviceId)
AzureIoTClient 3:40f482ed0be8 534 {
AzureIoTClient 4:e472f5ce3473 535 STRING_HANDLE result;
AzureIoTClient 4:e472f5ce3473 536 size_t len = strlen(deviceId);
AzureIoTClient 3:40f482ed0be8 537
AzureIoTClient 4:e472f5ce3473 538 char* eventTopic = malloc(len + EVENT_TOPIC_DEFAULT_LEN + 1);
AzureIoTClient 4:e472f5ce3473 539 if (eventTopic == NULL)
AzureIoTClient 4:e472f5ce3473 540 {
AzureIoTClient 4:e472f5ce3473 541 result = NULL;
AzureIoTClient 4:e472f5ce3473 542 }
AzureIoTClient 4:e472f5ce3473 543 else
AzureIoTClient 4:e472f5ce3473 544 {
AzureIoTClient 4:e472f5ce3473 545 (void)sprintf(eventTopic, DEVICE_DEVICE_TOPIC, deviceId);
AzureIoTClient 4:e472f5ce3473 546 result = STRING_construct(eventTopic);
AzureIoTClient 4:e472f5ce3473 547 free(eventTopic);
AzureIoTClient 4:e472f5ce3473 548 }
AzureIoTClient 4:e472f5ce3473 549 return result;
AzureIoTClient 3:40f482ed0be8 550 }
AzureIoTClient 3:40f482ed0be8 551
AzureIoTClient 3:40f482ed0be8 552 static STRING_HANDLE ConstructMessageTopic(const char* deviceId)
AzureIoTClient 3:40f482ed0be8 553 {
AzureIoTClient 4:e472f5ce3473 554 STRING_HANDLE result;
AzureIoTClient 4:e472f5ce3473 555 size_t len = strlen(deviceId);
AzureIoTClient 3:40f482ed0be8 556
AzureIoTClient 4:e472f5ce3473 557 char* messageTopic = malloc(len + 32 + 1);
AzureIoTClient 4:e472f5ce3473 558 if (messageTopic == NULL)
AzureIoTClient 4:e472f5ce3473 559 {
AzureIoTClient 4:e472f5ce3473 560 result = NULL;
AzureIoTClient 4:e472f5ce3473 561 }
AzureIoTClient 4:e472f5ce3473 562 else
AzureIoTClient 4:e472f5ce3473 563 {
AzureIoTClient 4:e472f5ce3473 564 (void)sprintf(messageTopic, DEVICE_MSG_TOPIC, deviceId);
AzureIoTClient 4:e472f5ce3473 565 result = STRING_construct(messageTopic);
AzureIoTClient 4:e472f5ce3473 566 free(messageTopic);
AzureIoTClient 4:e472f5ce3473 567 }
AzureIoTClient 4:e472f5ce3473 568 return result;
AzureIoTClient 3:40f482ed0be8 569 }
AzureIoTClient 3:40f482ed0be8 570
AzureIoTClient 3:40f482ed0be8 571 static int GetTransportProviderIfNecessary(PMQTTTRANSPORT_HANDLE_DATA transportState)
AzureIoTClient 3:40f482ed0be8 572 {
AzureIoTClient 4:e472f5ce3473 573 int result;
AzureIoTClient 3:40f482ed0be8 574
AzureIoTClient 4:e472f5ce3473 575 if (transportState->xioTransport == NULL)
AzureIoTClient 4:e472f5ce3473 576 {
AzureIoTClient 4:e472f5ce3473 577 // construct address
AzureIoTClient 4:e472f5ce3473 578 const char* hostAddress = STRING_c_str(transportState->hostAddress);
AzureIoTClient 4:e472f5ce3473 579 transportState->xioTransport = getIoTransportProvider(hostAddress, transportState->portNum);
AzureIoTClient 4:e472f5ce3473 580 if (transportState->xioTransport == NULL)
AzureIoTClient 4:e472f5ce3473 581 {
AzureIoTClient 4:e472f5ce3473 582 LogError("Unable to create the lower level TLS layer.");
AzureIoTClient 4:e472f5ce3473 583 result = __LINE__;
AzureIoTClient 4:e472f5ce3473 584 }
AzureIoTClient 4:e472f5ce3473 585 else
AzureIoTClient 4:e472f5ce3473 586 {
AzureIoTClient 4:e472f5ce3473 587 result = 0;
AzureIoTClient 4:e472f5ce3473 588 }
AzureIoTClient 4:e472f5ce3473 589 }
AzureIoTClient 4:e472f5ce3473 590 else
AzureIoTClient 4:e472f5ce3473 591 {
AzureIoTClient 4:e472f5ce3473 592 result = 0;
AzureIoTClient 4:e472f5ce3473 593 }
AzureIoTClient 4:e472f5ce3473 594 return result;
AzureIoTClient 3:40f482ed0be8 595 }
AzureIoTClient 3:40f482ed0be8 596
AzureIoTClient 3:40f482ed0be8 597 static int SendMqttConnectMsg(PMQTTTRANSPORT_HANDLE_DATA transportState)
AzureIoTClient 3:40f482ed0be8 598 {
AzureIoTClient 4:e472f5ce3473 599 int result;
AzureIoTClient 3:40f482ed0be8 600
AzureIoTClient 4:e472f5ce3473 601 // Construct SAS token
AzureIoTClient 4:e472f5ce3473 602 size_t secSinceEpoch = (size_t)(difftime(get_time(NULL), EPOCH_TIME_T_VALUE) + 0);
AzureIoTClient 4:e472f5ce3473 603 size_t expiryTime = secSinceEpoch + SAS_TOKEN_DEFAULT_LIFETIME;
AzureIoTClient 3:40f482ed0be8 604
AzureIoTClient 4:e472f5ce3473 605 // Not checking the success of this variable, if fail it will fail in the SASToken creation and return false;
AzureIoTClient 4:e472f5ce3473 606 STRING_HANDLE emptyKeyName = STRING_new();
AzureIoTClient 3:40f482ed0be8 607 if (emptyKeyName == NULL)
Azure.IoT Build 0:5e72a75c31b8 608 {
Azure.IoT Build 0:5e72a75c31b8 609 result = __LINE__;
Azure.IoT Build 0:5e72a75c31b8 610 }
Azure.IoT Build 0:5e72a75c31b8 611 else
Azure.IoT Build 0:5e72a75c31b8 612 {
AzureIoTClient 3:40f482ed0be8 613 STRING_HANDLE sasToken = NULL;
AzureIoTClient 3:40f482ed0be8 614 if (transportState->sasTokenFromUser)
AzureIoTClient 3:40f482ed0be8 615 {
AzureIoTClient 3:40f482ed0be8 616 sasToken = STRING_clone(transportState->sasTokenSr);
AzureIoTClient 3:40f482ed0be8 617 }
AzureIoTClient 3:40f482ed0be8 618 else
AzureIoTClient 3:40f482ed0be8 619 {
AzureIoTClient 3:40f482ed0be8 620 sasToken = SASToken_Create(transportState->device_key, transportState->sasTokenSr, emptyKeyName, expiryTime);
AzureIoTClient 3:40f482ed0be8 621 }
AzureIoTClient 3:40f482ed0be8 622
AzureIoTClient 3:40f482ed0be8 623 if (sasToken == NULL)
Azure.IoT Build 0:5e72a75c31b8 624 {
Azure.IoT Build 0:5e72a75c31b8 625 result = __LINE__;
Azure.IoT Build 0:5e72a75c31b8 626 }
Azure.IoT Build 0:5e72a75c31b8 627 else
Azure.IoT Build 0:5e72a75c31b8 628 {
AzureIoTClient 3:40f482ed0be8 629 MQTT_CLIENT_OPTIONS options = { 0 };
AzureIoTClient 3:40f482ed0be8 630 options.clientId = (char*)STRING_c_str(transportState->device_id);
AzureIoTClient 3:40f482ed0be8 631 options.willMessage = NULL;
AzureIoTClient 3:40f482ed0be8 632 options.username = (char*)STRING_c_str(transportState->configPassedThroughUsername);
AzureIoTClient 3:40f482ed0be8 633 options.password = (char*)STRING_c_str(sasToken);
AzureIoTClient 3:40f482ed0be8 634 options.keepAliveInterval = transportState->keepAliveValue;
AzureIoTClient 3:40f482ed0be8 635 options.useCleanSession = false;
AzureIoTClient 3:40f482ed0be8 636 options.qualityOfServiceValue = DELIVER_AT_LEAST_ONCE;
AzureIoTClient 2:9db4da50abaa 637
AzureIoTClient 3:40f482ed0be8 638 if (GetTransportProviderIfNecessary(transportState) == 0)
Azure.IoT Build 0:5e72a75c31b8 639 {
AzureIoTClient 3:40f482ed0be8 640 if (mqtt_client_connect(transportState->mqttClient, transportState->xioTransport, &options) != 0)
Azure.IoT Build 0:5e72a75c31b8 641 {
AzureIoTClient 3:40f482ed0be8 642 LogError("failure connecting to address %s:%d.", STRING_c_str(transportState->hostAddress), transportState->portNum);
AzureIoTClient 3:40f482ed0be8 643 result = __LINE__;
Azure.IoT Build 0:5e72a75c31b8 644 }
Azure.IoT Build 0:5e72a75c31b8 645 else
Azure.IoT Build 0:5e72a75c31b8 646 {
AzureIoTClient 3:40f482ed0be8 647 (void)tickcounter_get_current_ms(g_msgTickCounter, &transportState->mqtt_connect_time);
AzureIoTClient 3:40f482ed0be8 648 result = 0;
Azure.IoT Build 0:5e72a75c31b8 649 }
Azure.IoT Build 0:5e72a75c31b8 650 }
Azure.IoT Build 0:5e72a75c31b8 651 else
Azure.IoT Build 0:5e72a75c31b8 652 {
AzureIoTClient 3:40f482ed0be8 653 result = __LINE__;
Azure.IoT Build 0:5e72a75c31b8 654 }
Azure.IoT Build 0:5e72a75c31b8 655 }
AzureIoTClient 3:40f482ed0be8 656 STRING_delete(emptyKeyName);
AzureIoTClient 3:40f482ed0be8 657 STRING_delete(sasToken);
AzureIoTClient 2:9db4da50abaa 658 }
AzureIoTClient 4:e472f5ce3473 659 return result;
Azure.IoT Build 0:5e72a75c31b8 660 }
Azure.IoT Build 0:5e72a75c31b8 661
Azure.IoT Build 0:5e72a75c31b8 662 static int InitializeConnection(PMQTTTRANSPORT_HANDLE_DATA transportState)
Azure.IoT Build 0:5e72a75c31b8 663 {
AzureIoTClient 4:e472f5ce3473 664 int result = 0;
AzureIoTClient 2:9db4da50abaa 665
AzureIoTClient 4:e472f5ce3473 666 // Make sure we're not destroying the object
AzureIoTClient 4:e472f5ce3473 667 if (!transportState->destroyCalled)
AzureIoTClient 4:e472f5ce3473 668 {
AzureIoTClient 4:e472f5ce3473 669 // If we are not connected then check to see if we need
AzureIoTClient 4:e472f5ce3473 670 // to back off the connecting to the server
AzureIoTClient 4:e472f5ce3473 671 if (!transportState->connected)
AzureIoTClient 4:e472f5ce3473 672 {
AzureIoTClient 4:e472f5ce3473 673 // Default makeConnection as true if something goes wrong we'll make the connection
AzureIoTClient 4:e472f5ce3473 674 bool makeConnection = true;
AzureIoTClient 4:e472f5ce3473 675 // If we've failed for FAILED_CONN_BACKOFF_VALUE straight times them let's slow down connection
AzureIoTClient 4:e472f5ce3473 676 // to the service
AzureIoTClient 4:e472f5ce3473 677 if (transportState->connectFailCount > FAILED_CONN_BACKOFF_VALUE)
AzureIoTClient 4:e472f5ce3473 678 {
AzureIoTClient 4:e472f5ce3473 679 uint64_t currentTick;
AzureIoTClient 4:e472f5ce3473 680 if (tickcounter_get_current_ms(g_msgTickCounter, &currentTick) == 0)
AzureIoTClient 4:e472f5ce3473 681 {
AzureIoTClient 4:e472f5ce3473 682 if ( ((currentTick - transportState->connectTick)/1000) <= DEFAULT_CONNECTION_INTERVAL)
AzureIoTClient 4:e472f5ce3473 683 {
AzureIoTClient 4:e472f5ce3473 684 result = __LINE__;
AzureIoTClient 4:e472f5ce3473 685 makeConnection = false;
AzureIoTClient 4:e472f5ce3473 686 }
AzureIoTClient 4:e472f5ce3473 687 }
AzureIoTClient 4:e472f5ce3473 688 }
AzureIoTClient 2:9db4da50abaa 689
AzureIoTClient 4:e472f5ce3473 690 if (makeConnection)
AzureIoTClient 4:e472f5ce3473 691 {
AzureIoTClient 4:e472f5ce3473 692 (void)tickcounter_get_current_ms(g_msgTickCounter, &transportState->connectTick);
AzureIoTClient 4:e472f5ce3473 693 if (SendMqttConnectMsg(transportState) != 0)
AzureIoTClient 4:e472f5ce3473 694 {
AzureIoTClient 4:e472f5ce3473 695 transportState->connectFailCount++;
AzureIoTClient 4:e472f5ce3473 696 result = __LINE__;
AzureIoTClient 4:e472f5ce3473 697 }
AzureIoTClient 4:e472f5ce3473 698 else
AzureIoTClient 4:e472f5ce3473 699 {
AzureIoTClient 4:e472f5ce3473 700 transportState->connectFailCount = 0;
AzureIoTClient 4:e472f5ce3473 701 transportState->connected = true;
AzureIoTClient 4:e472f5ce3473 702 result = 0;
AzureIoTClient 4:e472f5ce3473 703 }
AzureIoTClient 4:e472f5ce3473 704 }
AzureIoTClient 4:e472f5ce3473 705 }
AzureIoTClient 2:9db4da50abaa 706
AzureIoTClient 4:e472f5ce3473 707 if (transportState->connected)
AzureIoTClient 4:e472f5ce3473 708 {
AzureIoTClient 4:e472f5ce3473 709 // We are connected and not being closed, so does SAS need to reconnect?
AzureIoTClient 4:e472f5ce3473 710 uint64_t current_time;
AzureIoTClient 4:e472f5ce3473 711 (void)tickcounter_get_current_ms(g_msgTickCounter, &current_time);
AzureIoTClient 4:e472f5ce3473 712 if ((current_time - transportState->mqtt_connect_time) / 1000 > (SAS_TOKEN_DEFAULT_LIFETIME*SAS_REFRESH_MULTIPLIER))
AzureIoTClient 4:e472f5ce3473 713 {
AzureIoTClient 4:e472f5ce3473 714 (void)mqtt_client_disconnect(transportState->mqttClient);
AzureIoTClient 4:e472f5ce3473 715 transportState->subscribed = false;
AzureIoTClient 4:e472f5ce3473 716 transportState->connected = false;
AzureIoTClient 4:e472f5ce3473 717 transportState->currPacketState = UNKNOWN_TYPE;
AzureIoTClient 4:e472f5ce3473 718 }
AzureIoTClient 4:e472f5ce3473 719 }
AzureIoTClient 4:e472f5ce3473 720 }
AzureIoTClient 4:e472f5ce3473 721 return result;
Azure.IoT Build 0:5e72a75c31b8 722 }
Azure.IoT Build 0:5e72a75c31b8 723
Azure.IoT Build 0:5e72a75c31b8 724 static STRING_HANDLE buildConfigForUsername(const IOTHUB_CLIENT_CONFIG* upperConfig)
Azure.IoT Build 0:5e72a75c31b8 725 {
AzureIoTClient 4:e472f5ce3473 726 STRING_HANDLE result;
Azure.IoT Build 0:5e72a75c31b8 727
AzureIoTClient 4:e472f5ce3473 728 size_t len = strlen(upperConfig->iotHubName)+strlen(upperConfig->iotHubSuffix)+strlen(upperConfig->deviceId)+strlen(CLIENT_DEVICE_TYPE_PREFIX)+strlen(IOTHUB_SDK_VERSION);
AzureIoTClient 4:e472f5ce3473 729 char* eventTopic = malloc(len + BUILD_CONFIG_USERNAME + 1);
AzureIoTClient 4:e472f5ce3473 730 if (eventTopic == NULL)
AzureIoTClient 4:e472f5ce3473 731 {
AzureIoTClient 4:e472f5ce3473 732 result = NULL;
AzureIoTClient 4:e472f5ce3473 733 }
AzureIoTClient 4:e472f5ce3473 734 else
AzureIoTClient 4:e472f5ce3473 735 {
AzureIoTClient 4:e472f5ce3473 736 (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 737 result = STRING_construct(eventTopic);
AzureIoTClient 4:e472f5ce3473 738 free(eventTopic);
AzureIoTClient 4:e472f5ce3473 739 }
AzureIoTClient 4:e472f5ce3473 740 return result;
Azure.IoT Build 0:5e72a75c31b8 741 }
Azure.IoT Build 0:5e72a75c31b8 742
Azure.IoT Build 0:5e72a75c31b8 743 static PMQTTTRANSPORT_HANDLE_DATA InitializeTransportHandleData(const IOTHUB_CLIENT_CONFIG* upperConfig, PDLIST_ENTRY waitingToSend)
Azure.IoT Build 0:5e72a75c31b8 744 {
AzureIoTClient 4:e472f5ce3473 745 PMQTTTRANSPORT_HANDLE_DATA state = (PMQTTTRANSPORT_HANDLE_DATA)malloc(sizeof(MQTTTRANSPORT_HANDLE_DATA));
AzureIoTClient 4:e472f5ce3473 746 if (state == NULL)
AzureIoTClient 4:e472f5ce3473 747 {
AzureIoTClient 4:e472f5ce3473 748 LogError("Could not create MQTT transport state. Memory allocation failed.");
AzureIoTClient 4:e472f5ce3473 749 }
AzureIoTClient 4:e472f5ce3473 750 else if ((state->device_id = STRING_construct(upperConfig->deviceId)) == NULL)
AzureIoTClient 4:e472f5ce3473 751 {
AzureIoTClient 4:e472f5ce3473 752 free(state);
AzureIoTClient 4:e472f5ce3473 753 state = NULL;
AzureIoTClient 4:e472f5ce3473 754 }
Azure.IoT Build 0:5e72a75c31b8 755 else
Azure.IoT Build 0:5e72a75c31b8 756 {
AzureIoTClient 3:40f482ed0be8 757 state->device_key = NULL;
AzureIoTClient 3:40f482ed0be8 758 state->sasTokenSr = NULL;
AzureIoTClient 3:40f482ed0be8 759
AzureIoTClient 3:40f482ed0be8 760 if ((upperConfig->deviceKey != NULL) && ((state->device_key = STRING_construct(upperConfig->deviceKey)) == NULL))
AzureIoTClient 3:40f482ed0be8 761 {
AzureIoTClient 3:40f482ed0be8 762 LogError("Could not create device key for MQTT");
AzureIoTClient 3:40f482ed0be8 763 STRING_delete(state->device_id);
AzureIoTClient 3:40f482ed0be8 764 free(state);
AzureIoTClient 3:40f482ed0be8 765 state = NULL;
AzureIoTClient 3:40f482ed0be8 766 }
AzureIoTClient 3:40f482ed0be8 767 else if ((upperConfig->deviceSasToken != NULL) && ((state->sasTokenSr = STRING_construct(upperConfig->deviceSasToken)) == NULL))
AzureIoTClient 3:40f482ed0be8 768 {
AzureIoTClient 3:40f482ed0be8 769 LogError("Could not create Sas Token Sr String");
AzureIoTClient 3:40f482ed0be8 770 STRING_delete(state->device_id);
AzureIoTClient 3:40f482ed0be8 771 STRING_delete(state->device_key);
AzureIoTClient 3:40f482ed0be8 772 free(state);
AzureIoTClient 3:40f482ed0be8 773 state = NULL;
AzureIoTClient 3:40f482ed0be8 774 }
AzureIoTClient 3:40f482ed0be8 775 else if ((upperConfig->deviceSasToken == NULL) && ((state->sasTokenSr = ConstructSasToken(upperConfig->iotHubName, upperConfig->iotHubSuffix, upperConfig->deviceId)) == NULL))
Azure.IoT Build 0:5e72a75c31b8 776 {
AzureIoTClient 3:40f482ed0be8 777 LogError("Could not create Sas Token Sr String.");
AzureIoTClient 3:40f482ed0be8 778 STRING_delete(state->device_id);
AzureIoTClient 3:40f482ed0be8 779 STRING_delete(state->device_key);
AzureIoTClient 3:40f482ed0be8 780 free(state);
AzureIoTClient 3:40f482ed0be8 781 state = NULL;
AzureIoTClient 3:40f482ed0be8 782 }
AzureIoTClient 3:40f482ed0be8 783 else if ((state->mqttEventTopic = ConstructEventTopic(upperConfig->deviceId)) == NULL)
AzureIoTClient 3:40f482ed0be8 784 {
AzureIoTClient 3:40f482ed0be8 785 LogError("Could not create mqttEventTopic for MQTT");
AzureIoTClient 3:40f482ed0be8 786 STRING_delete(state->sasTokenSr);
AzureIoTClient 3:40f482ed0be8 787 STRING_delete(state->device_key);
AzureIoTClient 3:40f482ed0be8 788 STRING_delete(state->device_id);
AzureIoTClient 3:40f482ed0be8 789 free(state);
AzureIoTClient 3:40f482ed0be8 790 state = NULL;
AzureIoTClient 3:40f482ed0be8 791 }
AzureIoTClient 3:40f482ed0be8 792 else if ((state->mqttMessageTopic = ConstructMessageTopic(upperConfig->deviceId)) == NULL)
AzureIoTClient 3:40f482ed0be8 793 {
AzureIoTClient 3:40f482ed0be8 794 LogError("Could not create mqttMessageTopic for MQTT");
Azure.IoT Build 0:5e72a75c31b8 795 STRING_delete(state->mqttEventTopic);
Azure.IoT Build 0:5e72a75c31b8 796 STRING_delete(state->sasTokenSr);
Azure.IoT Build 0:5e72a75c31b8 797 STRING_delete(state->device_key);
Azure.IoT Build 0:5e72a75c31b8 798 STRING_delete(state->device_id);
Azure.IoT Build 0:5e72a75c31b8 799 free(state);
Azure.IoT Build 0:5e72a75c31b8 800 state = NULL;
Azure.IoT Build 0:5e72a75c31b8 801 }
Azure.IoT Build 0:5e72a75c31b8 802 else
Azure.IoT Build 0:5e72a75c31b8 803 {
Azure.IoT Build 5:73603e7a6542 804 state->mqttClient = mqtt_client_init(MqttRecvCallback, MqttOpCompleteCallback, state);
AzureIoTClient 3:40f482ed0be8 805 if (state->mqttClient == NULL)
Azure.IoT Build 0:5e72a75c31b8 806 {
Azure.IoT Build 0:5e72a75c31b8 807 STRING_delete(state->mqttEventTopic);
Azure.IoT Build 0:5e72a75c31b8 808 STRING_delete(state->mqttMessageTopic);
Azure.IoT Build 0:5e72a75c31b8 809 STRING_delete(state->sasTokenSr);
Azure.IoT Build 0:5e72a75c31b8 810 STRING_delete(state->device_key);
Azure.IoT Build 0:5e72a75c31b8 811 STRING_delete(state->device_id);
Azure.IoT Build 0:5e72a75c31b8 812 free(state);
Azure.IoT Build 0:5e72a75c31b8 813 state = NULL;
Azure.IoT Build 0:5e72a75c31b8 814 }
Azure.IoT Build 0:5e72a75c31b8 815 else
Azure.IoT Build 0:5e72a75c31b8 816 {
AzureIoTClient 3:40f482ed0be8 817 /* Codes_SRS_IOTHUB_MQTT_TRANSPORT_07_008: [The hostname shall be constructed using the iothubname and iothubSuffix.] */
AzureIoTClient 3:40f482ed0be8 818 // TODO: need to strip the ssl or http or tls
AzureIoTClient 3:40f482ed0be8 819 char tempAddress[DEFAULT_TEMP_STRING_LEN];
AzureIoTClient 3:40f482ed0be8 820 (void)snprintf(tempAddress, DEFAULT_TEMP_STRING_LEN, "%s.%s", upperConfig->iotHubName, upperConfig->iotHubSuffix);
AzureIoTClient 3:40f482ed0be8 821 if ((state->hostAddress = STRING_construct(tempAddress)) == NULL)
AzureIoTClient 3:40f482ed0be8 822 {
AzureIoTClient 3:40f482ed0be8 823 STRING_delete(state->mqttEventTopic);
AzureIoTClient 3:40f482ed0be8 824 STRING_delete(state->mqttMessageTopic);
AzureIoTClient 3:40f482ed0be8 825 STRING_delete(state->sasTokenSr);
AzureIoTClient 3:40f482ed0be8 826 STRING_delete(state->device_key);
AzureIoTClient 3:40f482ed0be8 827 STRING_delete(state->device_id);
AzureIoTClient 3:40f482ed0be8 828 free(state);
AzureIoTClient 3:40f482ed0be8 829 state = NULL;
AzureIoTClient 3:40f482ed0be8 830 }
AzureIoTClient 3:40f482ed0be8 831 else if ((state->configPassedThroughUsername = buildConfigForUsername(upperConfig)) == NULL)
AzureIoTClient 3:40f482ed0be8 832 {
AzureIoTClient 3:40f482ed0be8 833 STRING_delete(state->hostAddress);
AzureIoTClient 3:40f482ed0be8 834 STRING_delete(state->mqttEventTopic);
AzureIoTClient 3:40f482ed0be8 835 STRING_delete(state->mqttMessageTopic);
AzureIoTClient 3:40f482ed0be8 836 STRING_delete(state->sasTokenSr);
AzureIoTClient 3:40f482ed0be8 837 STRING_delete(state->device_key);
AzureIoTClient 3:40f482ed0be8 838 STRING_delete(state->device_id);
AzureIoTClient 3:40f482ed0be8 839 free(state);
AzureIoTClient 3:40f482ed0be8 840 state = NULL;
AzureIoTClient 3:40f482ed0be8 841 }
AzureIoTClient 3:40f482ed0be8 842 else
AzureIoTClient 3:40f482ed0be8 843 {
AzureIoTClient 3:40f482ed0be8 844 /* 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 845 DList_InitializeListHead(&(state->waitingForAck));
AzureIoTClient 3:40f482ed0be8 846 state->sasTokenFromUser = (upperConfig->deviceSasToken == NULL) ? false : true;
AzureIoTClient 3:40f482ed0be8 847 state->destroyCalled = false;
AzureIoTClient 3:40f482ed0be8 848 state->isRegistered = false;
AzureIoTClient 3:40f482ed0be8 849 state->subscribed = false;
AzureIoTClient 3:40f482ed0be8 850 state->connected = false;
AzureIoTClient 3:40f482ed0be8 851 state->receiveMessages = false;
AzureIoTClient 3:40f482ed0be8 852 state->packetId = 1;
AzureIoTClient 3:40f482ed0be8 853 state->llClientHandle = NULL;
AzureIoTClient 3:40f482ed0be8 854 state->xioTransport = NULL;
AzureIoTClient 3:40f482ed0be8 855 state->portNum = DEFAULT_PORT_NUMBER;
AzureIoTClient 3:40f482ed0be8 856 state->waitingToSend = waitingToSend;
AzureIoTClient 3:40f482ed0be8 857 state->currPacketState = CONNECT_TYPE;
AzureIoTClient 3:40f482ed0be8 858 state->keepAliveValue = DEFAULT_MQTT_KEEPALIVE;
AzureIoTClient 3:40f482ed0be8 859 state->connectFailCount = 0;
AzureIoTClient 3:40f482ed0be8 860 state->connectTick = 0;
AzureIoTClient 3:40f482ed0be8 861 }
Azure.IoT Build 0:5e72a75c31b8 862 }
Azure.IoT Build 0:5e72a75c31b8 863 }
Azure.IoT Build 0:5e72a75c31b8 864 }
AzureIoTClient 4:e472f5ce3473 865 return state;
Azure.IoT Build 0:5e72a75c31b8 866 }
Azure.IoT Build 0:5e72a75c31b8 867
AzureIoTClient 4:e472f5ce3473 868 static TRANSPORT_LL_HANDLE IoTHubTransportMqtt_Create(const IOTHUBTRANSPORT_CONFIG* config)
Azure.IoT Build 0:5e72a75c31b8 869 {
AzureIoTClient 4:e472f5ce3473 870 PMQTTTRANSPORT_HANDLE_DATA result;
AzureIoTClient 4:e472f5ce3473 871 size_t deviceIdSize;
AzureIoTClient 3:40f482ed0be8 872
AzureIoTClient 4:e472f5ce3473 873 /* Codes_SRS_IOTHUB_MQTT_TRANSPORT_07_001: [If parameter config is NULL then IoTHubTransportMqtt_Create shall return NULL.] */
AzureIoTClient 4:e472f5ce3473 874 if (config == NULL)
AzureIoTClient 4:e472f5ce3473 875 {
AzureIoTClient 4:e472f5ce3473 876 LogError("Invalid Argument: Config Parameter is NULL.");
AzureIoTClient 4:e472f5ce3473 877 result = NULL;
AzureIoTClient 4:e472f5ce3473 878 }
AzureIoTClient 4:e472f5ce3473 879 /* 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 880 /* 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 881 else if (config->upperConfig == NULL || config->upperConfig->protocol == NULL || config->upperConfig->deviceId == NULL || ((config->upperConfig->deviceKey == NULL) && (config->upperConfig->deviceSasToken == NULL)) ||
AzureIoTClient 4:e472f5ce3473 882 config->upperConfig->iotHubName == NULL || config->upperConfig->iotHubSuffix == NULL)
AzureIoTClient 4:e472f5ce3473 883 {
AzureIoTClient 4:e472f5ce3473 884 LogError("Invalid Argument: upperConfig structure contains an invalid parameter");
AzureIoTClient 4:e472f5ce3473 885 result = NULL;
AzureIoTClient 4:e472f5ce3473 886 }
AzureIoTClient 4:e472f5ce3473 887 /* 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 888 else if (config->waitingToSend == NULL)
AzureIoTClient 4:e472f5ce3473 889 {
AzureIoTClient 4:e472f5ce3473 890 LogError("Invalid Argument: waitingToSend is NULL)");
AzureIoTClient 4:e472f5ce3473 891 result = NULL;
AzureIoTClient 4:e472f5ce3473 892 }
AzureIoTClient 4:e472f5ce3473 893 /* 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 894 else if ( ( (deviceIdSize = strlen(config->upperConfig->deviceId)) > 128U) || (deviceIdSize == 0) )
AzureIoTClient 4:e472f5ce3473 895 {
AzureIoTClient 4:e472f5ce3473 896 LogError("Invalid Argument: DeviceId is of an invalid size");
AzureIoTClient 4:e472f5ce3473 897 result = NULL;
AzureIoTClient 4:e472f5ce3473 898 }
AzureIoTClient 4:e472f5ce3473 899 /* 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 900 else if ((config->upperConfig->deviceKey != NULL) && (strlen(config->upperConfig->deviceKey) == 0))
AzureIoTClient 4:e472f5ce3473 901 {
AzureIoTClient 4:e472f5ce3473 902 LogError("Invalid Argument: deviceKey is empty");
AzureIoTClient 4:e472f5ce3473 903 result = NULL;
AzureIoTClient 4:e472f5ce3473 904 }
AzureIoTClient 4:e472f5ce3473 905 /* 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 906 else if ((config->upperConfig->deviceSasToken != NULL) && (strlen(config->upperConfig->deviceSasToken) == 0))
AzureIoTClient 4:e472f5ce3473 907 {
AzureIoTClient 4:e472f5ce3473 908 LogError("Invalid Argument: deviceSasToken is empty");
AzureIoTClient 4:e472f5ce3473 909 result = NULL;
AzureIoTClient 4:e472f5ce3473 910 }
AzureIoTClient 3:40f482ed0be8 911 /* Codes_SRS_IOTHUB_MQTT_TRANSPORT_03_003: [If both deviceKey & deviceSasToken fields are NOT NULL then IoTHubTransportMqtt_Create shall return NULL.] */
AzureIoTClient 3:40f482ed0be8 912 else if ((config->upperConfig->deviceKey != NULL) && (config->upperConfig->deviceSasToken != NULL))
Azure.IoT Build 0:5e72a75c31b8 913 {
AzureIoTClient 3:40f482ed0be8 914 LogError("Invalid Argument: cannot have both deviceKey and deviceSasToken defined");
Azure.IoT Build 0:5e72a75c31b8 915 result = NULL;
Azure.IoT Build 0:5e72a75c31b8 916 }
Azure.IoT Build 0:5e72a75c31b8 917 /* 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 918 else if (strlen(config->upperConfig->iotHubName) == 0)
AzureIoTClient 4:e472f5ce3473 919 {
AzureIoTClient 4:e472f5ce3473 920 LogError("Invalid Argument: iotHubName is empty");
AzureIoTClient 4:e472f5ce3473 921 result = NULL;
AzureIoTClient 4:e472f5ce3473 922 }
AzureIoTClient 4:e472f5ce3473 923 else
AzureIoTClient 4:e472f5ce3473 924 {
AzureIoTClient 4:e472f5ce3473 925 result = InitializeTransportHandleData(config->upperConfig, config->waitingToSend);
AzureIoTClient 4:e472f5ce3473 926 if (result != NULL)
AzureIoTClient 4:e472f5ce3473 927 {
AzureIoTClient 4:e472f5ce3473 928 g_msgTickCounter = tickcounter_create();
AzureIoTClient 4:e472f5ce3473 929 }
AzureIoTClient 4:e472f5ce3473 930 }
AzureIoTClient 4:e472f5ce3473 931 /* Codes_SRS_IOTHUB_MQTT_TRANSPORT_07_009: [If any error is encountered then IoTHubTransportMqtt_Create shall return NULL.] */
AzureIoTClient 4:e472f5ce3473 932 /* Codes_SRS_IOTHUB_MQTT_TRANSPORT_07_011: [On Success IoTHubTransportMqtt_Create shall return a non-NULL value.] */
AzureIoTClient 4:e472f5ce3473 933 return result;
Azure.IoT Build 0:5e72a75c31b8 934 }
Azure.IoT Build 0:5e72a75c31b8 935
AzureIoTClient 4:e472f5ce3473 936 /*forward declaration*/
AzureIoTClient 4:e472f5ce3473 937 static void IoTHubTransportMqtt_Unsubscribe(IOTHUB_DEVICE_HANDLE handle);
AzureIoTClient 4:e472f5ce3473 938
Azure.IoT Build 0:5e72a75c31b8 939 static void DisconnectFromClient(PMQTTTRANSPORT_HANDLE_DATA transportState)
Azure.IoT Build 0:5e72a75c31b8 940 {
AzureIoTClient 4:e472f5ce3473 941 /* Codes_SRS_IOTHUB_MQTT_TRANSPORT_07_013: [If the parameter subscribe is true then IoTHubTransportMqtt_Destroy shall call IoTHubTransportMqtt_Unsubscribe.] */
AzureIoTClient 4:e472f5ce3473 942 if (transportState->subscribed)
AzureIoTClient 4:e472f5ce3473 943 {
AzureIoTClient 4:e472f5ce3473 944 IoTHubTransportMqtt_Unsubscribe(transportState);
AzureIoTClient 4:e472f5ce3473 945 }
Azure.IoT Build 0:5e72a75c31b8 946
AzureIoTClient 4:e472f5ce3473 947 (void)mqtt_client_disconnect(transportState->mqttClient);
AzureIoTClient 4:e472f5ce3473 948 xio_destroy(transportState->xioTransport);
AzureIoTClient 4:e472f5ce3473 949 transportState->xioTransport = NULL;
Azure.IoT Build 0:5e72a75c31b8 950
AzureIoTClient 4:e472f5ce3473 951 transportState->connected = false;
AzureIoTClient 4:e472f5ce3473 952 transportState->currPacketState = DISCONNECT_TYPE;
Azure.IoT Build 0:5e72a75c31b8 953 }
Azure.IoT Build 0:5e72a75c31b8 954
AzureIoTClient 4:e472f5ce3473 955 static void IoTHubTransportMqtt_Destroy(TRANSPORT_LL_HANDLE handle)
Azure.IoT Build 0:5e72a75c31b8 956 {
AzureIoTClient 4:e472f5ce3473 957 /* Codes_SRS_IOTHUB_MQTT_TRANSPORT_07_012: [IoTHubTransportMqtt_Destroy shall do nothing if parameter handle is NULL.] */
AzureIoTClient 4:e472f5ce3473 958 PMQTTTRANSPORT_HANDLE_DATA transportState = (PMQTTTRANSPORT_HANDLE_DATA)handle;
AzureIoTClient 4:e472f5ce3473 959 if (transportState != NULL)
AzureIoTClient 4:e472f5ce3473 960 {
AzureIoTClient 4:e472f5ce3473 961 transportState->destroyCalled = true;
Azure.IoT Build 0:5e72a75c31b8 962
AzureIoTClient 4:e472f5ce3473 963 DisconnectFromClient(transportState);
Azure.IoT Build 0:5e72a75c31b8 964
AzureIoTClient 4:e472f5ce3473 965 //Empty the Waiting for Ack Messages.
AzureIoTClient 4:e472f5ce3473 966 while (!DList_IsListEmpty(&transportState->waitingForAck))
AzureIoTClient 4:e472f5ce3473 967 {
AzureIoTClient 4:e472f5ce3473 968 PDLIST_ENTRY currentEntry = DList_RemoveHeadList(&transportState->waitingForAck);
AzureIoTClient 4:e472f5ce3473 969 MQTT_MESSAGE_DETAILS_LIST* mqttMsgEntry = containingRecord(currentEntry, MQTT_MESSAGE_DETAILS_LIST, entry);
Azure.IoT Build 5:73603e7a6542 970 sendMsgComplete(mqttMsgEntry->iotHubMessageEntry, transportState, IOTHUB_CLIENT_CONFIRMATION_BECAUSE_DESTROY);
AzureIoTClient 4:e472f5ce3473 971 free(mqttMsgEntry);
AzureIoTClient 4:e472f5ce3473 972 }
Azure.IoT Build 0:5e72a75c31b8 973
AzureIoTClient 4:e472f5ce3473 974 /* Codes_SRS_IOTHUB_MQTT_TRANSPORT_07_014: [IoTHubTransportMqtt_Destroy shall free all the resources currently in use.] */
AzureIoTClient 4:e472f5ce3473 975 mqtt_client_deinit(transportState->mqttClient);
AzureIoTClient 4:e472f5ce3473 976 STRING_delete(transportState->mqttEventTopic);
AzureIoTClient 4:e472f5ce3473 977 STRING_delete(transportState->mqttMessageTopic);
AzureIoTClient 4:e472f5ce3473 978 STRING_delete(transportState->device_id);
AzureIoTClient 4:e472f5ce3473 979 STRING_delete(transportState->device_key);
AzureIoTClient 4:e472f5ce3473 980 STRING_delete(transportState->sasTokenSr);
AzureIoTClient 4:e472f5ce3473 981 STRING_delete(transportState->hostAddress);
AzureIoTClient 4:e472f5ce3473 982 STRING_delete(transportState->configPassedThroughUsername);
AzureIoTClient 4:e472f5ce3473 983 tickcounter_destroy(g_msgTickCounter);
AzureIoTClient 4:e472f5ce3473 984 free(transportState);
AzureIoTClient 4:e472f5ce3473 985 }
Azure.IoT Build 0:5e72a75c31b8 986 }
Azure.IoT Build 0:5e72a75c31b8 987
AzureIoTClient 4:e472f5ce3473 988 static int IoTHubTransportMqtt_Subscribe(IOTHUB_DEVICE_HANDLE handle)
Azure.IoT Build 0:5e72a75c31b8 989 {
AzureIoTClient 4:e472f5ce3473 990 int result;
AzureIoTClient 4:e472f5ce3473 991 PMQTTTRANSPORT_HANDLE_DATA transportState = (PMQTTTRANSPORT_HANDLE_DATA)handle;
AzureIoTClient 4:e472f5ce3473 992 if (transportState == NULL)
AzureIoTClient 4:e472f5ce3473 993 {
AzureIoTClient 4:e472f5ce3473 994 /* Codes_SRS_IOTHUB_MQTT_TRANSPORT_07_015: [If parameter handle is NULL than IoTHubTransportMqtt_Subscribe shall return a non-zero value.] */
AzureIoTClient 4:e472f5ce3473 995 LogError("Invalid handle parameter. NULL.");
AzureIoTClient 4:e472f5ce3473 996 result = __LINE__;
AzureIoTClient 4:e472f5ce3473 997 }
AzureIoTClient 4:e472f5ce3473 998 else
AzureIoTClient 4:e472f5ce3473 999 {
AzureIoTClient 4:e472f5ce3473 1000 /* 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 1001 transportState->receiveMessages = true;
AzureIoTClient 4:e472f5ce3473 1002 /* 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 1003 if (transportState->currPacketState != CONNACK_TYPE &&
AzureIoTClient 4:e472f5ce3473 1004 transportState->currPacketState != CONNECT_TYPE &&
AzureIoTClient 4:e472f5ce3473 1005 transportState->currPacketState != DISCONNECT_TYPE &&
AzureIoTClient 4:e472f5ce3473 1006 transportState->currPacketState != PACKET_TYPE_ERROR)
AzureIoTClient 4:e472f5ce3473 1007 {
AzureIoTClient 4:e472f5ce3473 1008 transportState->currPacketState = SUBSCRIBE_TYPE;
AzureIoTClient 4:e472f5ce3473 1009 }
AzureIoTClient 4:e472f5ce3473 1010 result = 0;
AzureIoTClient 4:e472f5ce3473 1011 }
AzureIoTClient 4:e472f5ce3473 1012 return result;
Azure.IoT Build 0:5e72a75c31b8 1013 }
Azure.IoT Build 0:5e72a75c31b8 1014
AzureIoTClient 4:e472f5ce3473 1015 static void IoTHubTransportMqtt_Unsubscribe(IOTHUB_DEVICE_HANDLE handle)
Azure.IoT Build 0:5e72a75c31b8 1016 {
AzureIoTClient 4:e472f5ce3473 1017 PMQTTTRANSPORT_HANDLE_DATA transportState = (PMQTTTRANSPORT_HANDLE_DATA)handle;
AzureIoTClient 4:e472f5ce3473 1018 /* Codes_SRS_IOTHUB_MQTT_TRANSPORT_07_019: [If parameter handle is NULL then IoTHubTransportMqtt_Unsubscribe shall do nothing.] */
AzureIoTClient 4:e472f5ce3473 1019 if (transportState != NULL && transportState->subscribed)
AzureIoTClient 4:e472f5ce3473 1020 {
AzureIoTClient 4:e472f5ce3473 1021 /* Codes_SRS_IOTHUB_MQTT_TRANSPORT_07_020: [IoTHubTransportMqtt_Unsubscribe shall call mqtt_client_unsubscribe to unsubscribe the mqtt message topic.] */
AzureIoTClient 4:e472f5ce3473 1022 const char* unsubscribe[] = { STRING_c_str(transportState->mqttMessageTopic) };
AzureIoTClient 4:e472f5ce3473 1023 (void)mqtt_client_unsubscribe(transportState->mqttClient, transportState->packetId++, unsubscribe, 1);
AzureIoTClient 4:e472f5ce3473 1024 transportState->subscribed = false;
AzureIoTClient 4:e472f5ce3473 1025 transportState->receiveMessages = false;
AzureIoTClient 4:e472f5ce3473 1026 }
AzureIoTClient 4:e472f5ce3473 1027 else
AzureIoTClient 4:e472f5ce3473 1028 {
AzureIoTClient 4:e472f5ce3473 1029 LogError("Invalid argument to unsubscribe (NULL).");
AzureIoTClient 4:e472f5ce3473 1030 }
Azure.IoT Build 0:5e72a75c31b8 1031 }
Azure.IoT Build 0:5e72a75c31b8 1032
AzureIoTClient 4:e472f5ce3473 1033 static void IoTHubTransportMqtt_DoWork(TRANSPORT_LL_HANDLE handle, IOTHUB_CLIENT_LL_HANDLE iotHubClientHandle)
Azure.IoT Build 0:5e72a75c31b8 1034 {
AzureIoTClient 4:e472f5ce3473 1035 /* Codes_SRS_IOTHUB_MQTT_TRANSPORT_07_026: [IoTHubTransportMqtt_DoWork shall do nothing if parameter handle and/or iotHubClientHandle is NULL.] */
AzureIoTClient 4:e472f5ce3473 1036 PMQTTTRANSPORT_HANDLE_DATA transportState = (PMQTTTRANSPORT_HANDLE_DATA)handle;
AzureIoTClient 4:e472f5ce3473 1037 if (transportState != NULL && iotHubClientHandle != NULL)
AzureIoTClient 4:e472f5ce3473 1038 {
AzureIoTClient 4:e472f5ce3473 1039 transportState->llClientHandle = iotHubClientHandle;
Azure.IoT Build 0:5e72a75c31b8 1040
AzureIoTClient 4:e472f5ce3473 1041 if (InitializeConnection(transportState) != 0)
AzureIoTClient 4:e472f5ce3473 1042 {
AzureIoTClient 4:e472f5ce3473 1043 // Don't want to flood the logs with failures here
AzureIoTClient 4:e472f5ce3473 1044 }
AzureIoTClient 4:e472f5ce3473 1045 else
AzureIoTClient 4:e472f5ce3473 1046 {
AzureIoTClient 4:e472f5ce3473 1047 if (transportState->currPacketState == CONNACK_TYPE || transportState->currPacketState == SUBSCRIBE_TYPE)
AzureIoTClient 4:e472f5ce3473 1048 {
AzureIoTClient 4:e472f5ce3473 1049 (void)SubscribeToMqttProtocol(transportState);
AzureIoTClient 4:e472f5ce3473 1050 }
AzureIoTClient 4:e472f5ce3473 1051 else if (transportState->currPacketState == SUBACK_TYPE)
AzureIoTClient 4:e472f5ce3473 1052 {
AzureIoTClient 4:e472f5ce3473 1053 // Publish can be called now
AzureIoTClient 4:e472f5ce3473 1054 transportState->currPacketState = PUBLISH_TYPE;
AzureIoTClient 4:e472f5ce3473 1055 }
AzureIoTClient 4:e472f5ce3473 1056 else if (transportState->currPacketState == PUBLISH_TYPE)
AzureIoTClient 4:e472f5ce3473 1057 {
AzureIoTClient 4:e472f5ce3473 1058 PDLIST_ENTRY currentListEntry = transportState->waitingForAck.Flink;
AzureIoTClient 4:e472f5ce3473 1059 while (currentListEntry != &transportState->waitingForAck)
AzureIoTClient 4:e472f5ce3473 1060 {
AzureIoTClient 4:e472f5ce3473 1061 MQTT_MESSAGE_DETAILS_LIST* mqttMsgEntry = containingRecord(currentListEntry, MQTT_MESSAGE_DETAILS_LIST, entry);
AzureIoTClient 4:e472f5ce3473 1062 DLIST_ENTRY nextListEntry;
AzureIoTClient 4:e472f5ce3473 1063 nextListEntry.Flink = currentListEntry->Flink;
Azure.IoT Build 0:5e72a75c31b8 1064
AzureIoTClient 4:e472f5ce3473 1065 uint64_t current_ms;
AzureIoTClient 4:e472f5ce3473 1066 (void)tickcounter_get_current_ms(g_msgTickCounter, &current_ms);
AzureIoTClient 4:e472f5ce3473 1067 /* 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 1068 if (((current_ms - mqttMsgEntry->msgPublishTime) / 1000) > RESEND_TIMEOUT_VALUE_MIN)
AzureIoTClient 4:e472f5ce3473 1069 {
AzureIoTClient 4:e472f5ce3473 1070 /* 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 1071 if (mqttMsgEntry->retryCount >= MAX_SEND_RECOUNT_LIMIT)
AzureIoTClient 4:e472f5ce3473 1072 {
AzureIoTClient 4:e472f5ce3473 1073 (void)DList_RemoveEntryList(currentListEntry);
Azure.IoT Build 5:73603e7a6542 1074 sendMsgComplete(mqttMsgEntry->iotHubMessageEntry, transportState, IOTHUB_CLIENT_CONFIRMATION_MESSAGE_TIMEOUT);
AzureIoTClient 4:e472f5ce3473 1075 free(mqttMsgEntry);
AzureIoTClient 4:e472f5ce3473 1076 }
AzureIoTClient 4:e472f5ce3473 1077 else
AzureIoTClient 4:e472f5ce3473 1078 {
AzureIoTClient 4:e472f5ce3473 1079 size_t messageLength;
AzureIoTClient 4:e472f5ce3473 1080 const unsigned char* messagePayload = RetrieveMessagePayload(mqttMsgEntry->iotHubMessageEntry->messageHandle, &messageLength);
AzureIoTClient 4:e472f5ce3473 1081 if (messageLength == 0 || messagePayload == NULL)
AzureIoTClient 4:e472f5ce3473 1082 {
AzureIoTClient 4:e472f5ce3473 1083 LogError("Failure from creating Message IoTHubMessage_GetData");
AzureIoTClient 4:e472f5ce3473 1084 }
AzureIoTClient 4:e472f5ce3473 1085 else
AzureIoTClient 4:e472f5ce3473 1086 {
AzureIoTClient 4:e472f5ce3473 1087 if (publishMqttMessage(transportState, mqttMsgEntry, messagePayload, messageLength) != 0)
AzureIoTClient 4:e472f5ce3473 1088 {
AzureIoTClient 4:e472f5ce3473 1089 (void)DList_RemoveEntryList(currentListEntry);
Azure.IoT Build 5:73603e7a6542 1090 sendMsgComplete(mqttMsgEntry->iotHubMessageEntry, transportState, IOTHUB_CLIENT_CONFIRMATION_ERROR);
AzureIoTClient 4:e472f5ce3473 1091 free(mqttMsgEntry);
AzureIoTClient 4:e472f5ce3473 1092 }
AzureIoTClient 4:e472f5ce3473 1093 }
AzureIoTClient 4:e472f5ce3473 1094 }
AzureIoTClient 4:e472f5ce3473 1095 }
AzureIoTClient 4:e472f5ce3473 1096 currentListEntry = nextListEntry.Flink;
AzureIoTClient 4:e472f5ce3473 1097 }
Azure.IoT Build 0:5e72a75c31b8 1098
AzureIoTClient 4:e472f5ce3473 1099 currentListEntry = transportState->waitingToSend->Flink;
AzureIoTClient 4:e472f5ce3473 1100 /* Codes_SRS_IOTHUB_MQTT_TRANSPORT_07_027: [IoTHubTransportMqtt_DoWork shall inspect the “waitingToSend” DLIST passed in config structure.] */
AzureIoTClient 4:e472f5ce3473 1101 while (currentListEntry != transportState->waitingToSend)
AzureIoTClient 4:e472f5ce3473 1102 {
AzureIoTClient 4:e472f5ce3473 1103 IOTHUB_MESSAGE_LIST* iothubMsgList = containingRecord(currentListEntry, IOTHUB_MESSAGE_LIST, entry);
AzureIoTClient 4:e472f5ce3473 1104 DLIST_ENTRY savedFromCurrentListEntry;
AzureIoTClient 4:e472f5ce3473 1105 savedFromCurrentListEntry.Flink = currentListEntry->Flink;
Azure.IoT Build 0:5e72a75c31b8 1106
AzureIoTClient 4:e472f5ce3473 1107 /* Codes_SRS_IOTHUB_MQTT_TRANSPORT_07_027: [IoTHubTransportMqtt_DoWork shall inspect the “waitingToSend” DLIST passed in config structure.] */
AzureIoTClient 4:e472f5ce3473 1108 size_t messageLength;
AzureIoTClient 4:e472f5ce3473 1109 const unsigned char* messagePayload = RetrieveMessagePayload(iothubMsgList->messageHandle, &messageLength);
AzureIoTClient 4:e472f5ce3473 1110 if (messageLength == 0 || messagePayload == NULL)
AzureIoTClient 4:e472f5ce3473 1111 {
AzureIoTClient 4:e472f5ce3473 1112 LogError("Failure result from IoTHubMessage_GetData");
AzureIoTClient 4:e472f5ce3473 1113 }
AzureIoTClient 4:e472f5ce3473 1114 else
AzureIoTClient 4:e472f5ce3473 1115 {
AzureIoTClient 4:e472f5ce3473 1116 /* 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 1117 MQTT_MESSAGE_DETAILS_LIST* mqttMsgEntry = (MQTT_MESSAGE_DETAILS_LIST*)malloc(sizeof(MQTT_MESSAGE_DETAILS_LIST));
AzureIoTClient 4:e472f5ce3473 1118 if (mqttMsgEntry == NULL)
AzureIoTClient 4:e472f5ce3473 1119 {
AzureIoTClient 4:e472f5ce3473 1120 LogError("Allocation Error: Failure allocating MQTT Message Detail List.");
AzureIoTClient 4:e472f5ce3473 1121 }
AzureIoTClient 4:e472f5ce3473 1122 else
AzureIoTClient 4:e472f5ce3473 1123 {
AzureIoTClient 4:e472f5ce3473 1124 mqttMsgEntry->retryCount = 0;
AzureIoTClient 4:e472f5ce3473 1125 mqttMsgEntry->msgPacketId = transportState->packetId;
AzureIoTClient 4:e472f5ce3473 1126 mqttMsgEntry->iotHubMessageEntry = iothubMsgList;
Azure.IoT Build 0:5e72a75c31b8 1127
AzureIoTClient 4:e472f5ce3473 1128 if (publishMqttMessage(transportState, mqttMsgEntry, messagePayload, messageLength) != 0)
AzureIoTClient 4:e472f5ce3473 1129 {
AzureIoTClient 4:e472f5ce3473 1130 (void)(DList_RemoveEntryList(currentListEntry));
Azure.IoT Build 5:73603e7a6542 1131 sendMsgComplete(iothubMsgList, transportState, IOTHUB_CLIENT_CONFIRMATION_ERROR);
AzureIoTClient 4:e472f5ce3473 1132 free(mqttMsgEntry);
AzureIoTClient 4:e472f5ce3473 1133 }
AzureIoTClient 4:e472f5ce3473 1134 else
AzureIoTClient 4:e472f5ce3473 1135 {
AzureIoTClient 4:e472f5ce3473 1136 (void)(DList_RemoveEntryList(currentListEntry));
AzureIoTClient 4:e472f5ce3473 1137 DList_InsertTailList(&(transportState->waitingForAck), &(mqttMsgEntry->entry));
AzureIoTClient 4:e472f5ce3473 1138 }
AzureIoTClient 4:e472f5ce3473 1139 }
AzureIoTClient 4:e472f5ce3473 1140 }
AzureIoTClient 4:e472f5ce3473 1141 currentListEntry = savedFromCurrentListEntry.Flink;
AzureIoTClient 4:e472f5ce3473 1142 }
AzureIoTClient 4:e472f5ce3473 1143 }
AzureIoTClient 4:e472f5ce3473 1144 /* 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 1145 mqtt_client_dowork(transportState->mqttClient);
AzureIoTClient 4:e472f5ce3473 1146 }
AzureIoTClient 4:e472f5ce3473 1147 }
Azure.IoT Build 0:5e72a75c31b8 1148 }
Azure.IoT Build 0:5e72a75c31b8 1149
AzureIoTClient 4:e472f5ce3473 1150 static IOTHUB_CLIENT_RESULT IoTHubTransportMqtt_GetSendStatus(IOTHUB_DEVICE_HANDLE handle, IOTHUB_CLIENT_STATUS *iotHubClientStatus)
Azure.IoT Build 0:5e72a75c31b8 1151 {
AzureIoTClient 4:e472f5ce3473 1152 IOTHUB_CLIENT_RESULT result;
Azure.IoT Build 0:5e72a75c31b8 1153
AzureIoTClient 4:e472f5ce3473 1154 if (handle == NULL || iotHubClientStatus == NULL)
AzureIoTClient 4:e472f5ce3473 1155 {
AzureIoTClient 4:e472f5ce3473 1156 /* Codes_SRS_IOTHUB_MQTT_TRANSPORT_07_023: [IoTHubTransportMqtt_GetSendStatus shall return IOTHUB_CLIENT_INVALID_ARG if called with NULL parameter.] */
AzureIoTClient 4:e472f5ce3473 1157 LogError("invalid arument.");
AzureIoTClient 4:e472f5ce3473 1158 result = IOTHUB_CLIENT_INVALID_ARG;
AzureIoTClient 4:e472f5ce3473 1159 }
AzureIoTClient 4:e472f5ce3473 1160 else
AzureIoTClient 4:e472f5ce3473 1161 {
AzureIoTClient 4:e472f5ce3473 1162 MQTTTRANSPORT_HANDLE_DATA* handleData = (MQTTTRANSPORT_HANDLE_DATA*)handle;
AzureIoTClient 4:e472f5ce3473 1163 if (!DList_IsListEmpty(handleData->waitingToSend) || !DList_IsListEmpty(&(handleData->waitingForAck)))
AzureIoTClient 4:e472f5ce3473 1164 {
AzureIoTClient 4:e472f5ce3473 1165 /* 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 1166 *iotHubClientStatus = IOTHUB_CLIENT_SEND_STATUS_BUSY;
AzureIoTClient 4:e472f5ce3473 1167 }
AzureIoTClient 4:e472f5ce3473 1168 else
AzureIoTClient 4:e472f5ce3473 1169 {
AzureIoTClient 4:e472f5ce3473 1170 /* 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 1171 *iotHubClientStatus = IOTHUB_CLIENT_SEND_STATUS_IDLE;
AzureIoTClient 4:e472f5ce3473 1172 }
AzureIoTClient 4:e472f5ce3473 1173 result = IOTHUB_CLIENT_OK;
AzureIoTClient 4:e472f5ce3473 1174 }
AzureIoTClient 4:e472f5ce3473 1175 return result;
Azure.IoT Build 0:5e72a75c31b8 1176 }
Azure.IoT Build 0:5e72a75c31b8 1177
AzureIoTClient 4:e472f5ce3473 1178 static IOTHUB_CLIENT_RESULT IoTHubTransportMqtt_SetOption(TRANSPORT_LL_HANDLE handle, const char* option, const void* value)
Azure.IoT Build 0:5e72a75c31b8 1179 {
AzureIoTClient 4:e472f5ce3473 1180 /* Codes_SRS_IOTHUB_MQTT_TRANSPORT_07_021: [If any parameter is NULL then IoTHubTransportMqtt_SetOption shall return IOTHUB_CLIENT_INVALID_ARG.] */
AzureIoTClient 4:e472f5ce3473 1181 IOTHUB_CLIENT_RESULT result;
AzureIoTClient 4:e472f5ce3473 1182 if (
AzureIoTClient 4:e472f5ce3473 1183 (handle == NULL) ||
AzureIoTClient 4:e472f5ce3473 1184 (option == NULL) ||
AzureIoTClient 4:e472f5ce3473 1185 (value == NULL)
AzureIoTClient 4:e472f5ce3473 1186 )
AzureIoTClient 4:e472f5ce3473 1187 {
AzureIoTClient 4:e472f5ce3473 1188 result = IOTHUB_CLIENT_INVALID_ARG;
AzureIoTClient 4:e472f5ce3473 1189 LogError("invalid parameter (NULL) passed to clientTransportAMQP_SetOption.");
AzureIoTClient 4:e472f5ce3473 1190 }
AzureIoTClient 4:e472f5ce3473 1191 else
AzureIoTClient 4:e472f5ce3473 1192 {
AzureIoTClient 4:e472f5ce3473 1193 MQTTTRANSPORT_HANDLE_DATA* transportState = (MQTTTRANSPORT_HANDLE_DATA*)handle;
AzureIoTClient 4:e472f5ce3473 1194 /* 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 1195 if (strcmp("logtrace", option) == 0)
AzureIoTClient 4:e472f5ce3473 1196 {
AzureIoTClient 4:e472f5ce3473 1197 bool* traceVal = (bool*)value;
AzureIoTClient 4:e472f5ce3473 1198 mqtt_client_set_trace(transportState->mqttClient, *traceVal, *traceVal);
AzureIoTClient 4:e472f5ce3473 1199 result = IOTHUB_CLIENT_OK;
AzureIoTClient 4:e472f5ce3473 1200 }
AzureIoTClient 4:e472f5ce3473 1201 else if (strcmp("keepalive", option) == 0)
AzureIoTClient 4:e472f5ce3473 1202 {
AzureIoTClient 4:e472f5ce3473 1203 /* 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 1204 int* keepAliveOption = (int*)value;
AzureIoTClient 4:e472f5ce3473 1205 /* 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 1206 if (*keepAliveOption != transportState->keepAliveValue)
AzureIoTClient 4:e472f5ce3473 1207 {
AzureIoTClient 4:e472f5ce3473 1208 transportState->keepAliveValue = *keepAliveOption;
AzureIoTClient 4:e472f5ce3473 1209 if (transportState->connected)
AzureIoTClient 4:e472f5ce3473 1210 {
AzureIoTClient 4:e472f5ce3473 1211 /* 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 1212 DisconnectFromClient(transportState);
AzureIoTClient 4:e472f5ce3473 1213 }
AzureIoTClient 4:e472f5ce3473 1214 }
AzureIoTClient 4:e472f5ce3473 1215 result = IOTHUB_CLIENT_OK;
AzureIoTClient 4:e472f5ce3473 1216 }
AzureIoTClient 4:e472f5ce3473 1217 else
AzureIoTClient 4:e472f5ce3473 1218 {
AzureIoTClient 4:e472f5ce3473 1219 /* 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 1220 if (GetTransportProviderIfNecessary(transportState) == 0)
AzureIoTClient 4:e472f5ce3473 1221 {
AzureIoTClient 4:e472f5ce3473 1222 if (xio_setoption(transportState->xioTransport, option, value) == 0)
AzureIoTClient 4:e472f5ce3473 1223 {
AzureIoTClient 4:e472f5ce3473 1224 result = IOTHUB_CLIENT_OK;
AzureIoTClient 4:e472f5ce3473 1225 }
AzureIoTClient 4:e472f5ce3473 1226 else
AzureIoTClient 4:e472f5ce3473 1227 {
AzureIoTClient 4:e472f5ce3473 1228 /* Codes_SRS_IOTHUB_MQTT_TRANSPORT_07_132: [IoTHubTransportMqtt_SetOption shall return IOTHUB_CLIENT_INVALID_ARG xio_setoption fails] */
AzureIoTClient 4:e472f5ce3473 1229 result = IOTHUB_CLIENT_INVALID_ARG;
AzureIoTClient 4:e472f5ce3473 1230 }
AzureIoTClient 4:e472f5ce3473 1231 }
AzureIoTClient 4:e472f5ce3473 1232 else
AzureIoTClient 4:e472f5ce3473 1233 {
AzureIoTClient 4:e472f5ce3473 1234 result = IOTHUB_CLIENT_ERROR;
AzureIoTClient 4:e472f5ce3473 1235 }
AzureIoTClient 4:e472f5ce3473 1236 }
AzureIoTClient 4:e472f5ce3473 1237 }
AzureIoTClient 4:e472f5ce3473 1238 return result;
Azure.IoT Build 0:5e72a75c31b8 1239 }
Azure.IoT Build 0:5e72a75c31b8 1240
AzureIoTClient 4:e472f5ce3473 1241 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 1242 {
AzureIoTClient 4:e472f5ce3473 1243 IOTHUB_DEVICE_HANDLE result;
AzureIoTClient 4:e472f5ce3473 1244 // Codes_SRS_IOTHUB_MQTT_TRANSPORT_17_001: [ IoTHubTransportMqtt_Register shall return NULL if the TRANSPORT_LL_HANDLE is NULL.]
AzureIoTClient 4:e472f5ce3473 1245 // Codes_SRS_IOTHUB_MQTT_TRANSPORT_17_002: [ IoTHubTransportMqtt_Register shall return NULL if device or waitingToSend are NULL.]
AzureIoTClient 4:e472f5ce3473 1246 if ((handle == NULL) || (device == NULL) || (waitingToSend == NULL))
AzureIoTClient 4:e472f5ce3473 1247 {
AzureIoTClient 3:40f482ed0be8 1248 LogError("IoTHubTransportMqtt_Register: handle, device or waitingToSend is NULL.");
Azure.IoT Build 0:5e72a75c31b8 1249 result = NULL;
AzureIoTClient 4:e472f5ce3473 1250 }
AzureIoTClient 4:e472f5ce3473 1251 else
AzureIoTClient 4:e472f5ce3473 1252 {
AzureIoTClient 4:e472f5ce3473 1253 MQTTTRANSPORT_HANDLE_DATA* transportState = (MQTTTRANSPORT_HANDLE_DATA*)handle;
Azure.IoT Build 0:5e72a75c31b8 1254
AzureIoTClient 4:e472f5ce3473 1255 // Codes_SRS_IOTHUB_MQTT_TRANSPORT_03_001: [ IoTHubTransportMqtt_Register shall return NULL if deviceId, or both deviceKey and deviceSasToken are NULL.]
AzureIoTClient 4:e472f5ce3473 1256 if (device->deviceId == NULL)
AzureIoTClient 4:e472f5ce3473 1257 {
AzureIoTClient 3:40f482ed0be8 1258 LogError("IoTHubTransportMqtt_Register: deviceId is NULL.");
AzureIoTClient 3:40f482ed0be8 1259 result = NULL;
AzureIoTClient 4:e472f5ce3473 1260 }
AzureIoTClient 4:e472f5ce3473 1261 else if ((device->deviceKey == NULL) && (device->deviceSasToken == NULL))
AzureIoTClient 4:e472f5ce3473 1262 {
AzureIoTClient 3:40f482ed0be8 1263 LogError("IoTHubTransportMqtt_Register: deviceKey and deviceSasToken are NULL.");
AzureIoTClient 3:40f482ed0be8 1264 result = NULL;
AzureIoTClient 4:e472f5ce3473 1265 }
AzureIoTClient 4:e472f5ce3473 1266 // Codes_SRS_IOTHUB_MQTT_TRANSPORT_03_002: [ IoTHubTransportMqtt_Register shall return NULL if both deviceKey and deviceSasToken are provided.]
AzureIoTClient 4:e472f5ce3473 1267 else if ((device->deviceKey != NULL) && (device->deviceSasToken != NULL))
AzureIoTClient 4:e472f5ce3473 1268 {
AzureIoTClient 3:40f482ed0be8 1269 LogError("IoTHubTransportMqtt_Register: Both deviceKey and deviceSasToken are defined. Only one can be used.");
Azure.IoT Build 0:5e72a75c31b8 1270 result = NULL;
AzureIoTClient 4:e472f5ce3473 1271 }
AzureIoTClient 4:e472f5ce3473 1272 else
AzureIoTClient 4:e472f5ce3473 1273 {
AzureIoTClient 4:e472f5ce3473 1274 // 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 1275 if (strcmp(STRING_c_str(transportState->device_id), device->deviceId) != 0)
AzureIoTClient 4:e472f5ce3473 1276 {
AzureIoTClient 3:40f482ed0be8 1277 LogError("IoTHubTransportMqtt_Register: deviceId does not match.");
AzureIoTClient 3:40f482ed0be8 1278 result = NULL;
AzureIoTClient 4:e472f5ce3473 1279 }
AzureIoTClient 4:e472f5ce3473 1280 else if ((device->deviceKey != NULL) && (strcmp(STRING_c_str(transportState->device_key), device->deviceKey) != 0))
AzureIoTClient 4:e472f5ce3473 1281 {
AzureIoTClient 3:40f482ed0be8 1282 LogError("IoTHubTransportMqtt_Register: deviceKey does not match.");
Azure.IoT Build 0:5e72a75c31b8 1283 result = NULL;
AzureIoTClient 4:e472f5ce3473 1284 }
AzureIoTClient 4:e472f5ce3473 1285 else
AzureIoTClient 4:e472f5ce3473 1286 {
AzureIoTClient 4:e472f5ce3473 1287 if (transportState->isRegistered == true)
AzureIoTClient 4:e472f5ce3473 1288 {
AzureIoTClient 4:e472f5ce3473 1289 LogError("Transport already has device registered by id: [%s]", device->deviceId);
AzureIoTClient 4:e472f5ce3473 1290 result = NULL;
AzureIoTClient 4:e472f5ce3473 1291 }
AzureIoTClient 4:e472f5ce3473 1292 else
AzureIoTClient 4:e472f5ce3473 1293 {
AzureIoTClient 4:e472f5ce3473 1294 transportState->isRegistered = true;
AzureIoTClient 4:e472f5ce3473 1295 // Codes_SRS_IOTHUB_MQTT_TRANSPORT_17_004: [ IoTHubTransportMqtt_Register shall return the TRANSPORT_LL_HANDLE as the IOTHUB_DEVICE_HANDLE. ]
AzureIoTClient 4:e472f5ce3473 1296 result = (IOTHUB_DEVICE_HANDLE)handle;
AzureIoTClient 4:e472f5ce3473 1297 }
AzureIoTClient 4:e472f5ce3473 1298 }
AzureIoTClient 4:e472f5ce3473 1299 }
AzureIoTClient 4:e472f5ce3473 1300 }
Azure.IoT Build 0:5e72a75c31b8 1301
AzureIoTClient 4:e472f5ce3473 1302 return result;
Azure.IoT Build 0:5e72a75c31b8 1303 }
Azure.IoT Build 0:5e72a75c31b8 1304
Azure.IoT Build 0:5e72a75c31b8 1305 // Codes_SRS_IOTHUB_MQTT_TRANSPORT_17_005: [ IoTHubTransportMqtt_Unregister shall return. ]
AzureIoTClient 4:e472f5ce3473 1306 static void IoTHubTransportMqtt_Unregister(IOTHUB_DEVICE_HANDLE deviceHandle)
Azure.IoT Build 0:5e72a75c31b8 1307 {
AzureIoTClient 4:e472f5ce3473 1308 if (deviceHandle != NULL)
AzureIoTClient 4:e472f5ce3473 1309 {
AzureIoTClient 4:e472f5ce3473 1310 MQTTTRANSPORT_HANDLE_DATA* transportState = (MQTTTRANSPORT_HANDLE_DATA*)deviceHandle;
Azure.IoT Build 0:5e72a75c31b8 1311
AzureIoTClient 4:e472f5ce3473 1312 transportState->isRegistered = false;
AzureIoTClient 4:e472f5ce3473 1313 }
Azure.IoT Build 0:5e72a75c31b8 1314 }
Azure.IoT Build 0:5e72a75c31b8 1315
AzureIoTClient 4:e472f5ce3473 1316 static STRING_HANDLE IoTHubTransportMqtt_GetHostname(TRANSPORT_LL_HANDLE handle)
AzureIoTClient 4:e472f5ce3473 1317 {
AzureIoTClient 4:e472f5ce3473 1318 STRING_HANDLE result;
AzureIoTClient 4:e472f5ce3473 1319 /*Codes_SRS_IOTHUB_MQTT_TRANSPORT_02_001: [ If handle is NULL then IoTHubTransportMqtt_GetHostname shall fail and return NULL. ]*/
AzureIoTClient 4:e472f5ce3473 1320 if (handle == NULL)
AzureIoTClient 4:e472f5ce3473 1321 {
AzureIoTClient 4:e472f5ce3473 1322 result = NULL;
AzureIoTClient 4:e472f5ce3473 1323 }
AzureIoTClient 4:e472f5ce3473 1324 else
AzureIoTClient 4:e472f5ce3473 1325 {
AzureIoTClient 4:e472f5ce3473 1326 /*Codes_SRS_IOTHUB_MQTT_TRANSPORT_02_002: [ Otherwise IoTHubTransportMqtt_GetHostname shall return a non-NULL STRING_HANDLE containg the hostname. ]*/
AzureIoTClient 4:e472f5ce3473 1327 result = ((MQTTTRANSPORT_HANDLE_DATA*)handle)->hostAddress;
AzureIoTClient 4:e472f5ce3473 1328 }
AzureIoTClient 4:e472f5ce3473 1329 return result;
AzureIoTClient 4:e472f5ce3473 1330 }
AzureIoTClient 4:e472f5ce3473 1331
AzureIoTClient 4:e472f5ce3473 1332 static TRANSPORT_PROVIDER myfunc = {
AzureIoTClient 4:e472f5ce3473 1333 IoTHubTransportMqtt_GetHostname,
AzureIoTClient 4:e472f5ce3473 1334 IoTHubTransportMqtt_SetOption,
AzureIoTClient 4:e472f5ce3473 1335 IoTHubTransportMqtt_Create,
AzureIoTClient 4:e472f5ce3473 1336 IoTHubTransportMqtt_Destroy,
AzureIoTClient 4:e472f5ce3473 1337 IoTHubTransportMqtt_Register,
AzureIoTClient 4:e472f5ce3473 1338 IoTHubTransportMqtt_Unregister,
AzureIoTClient 4:e472f5ce3473 1339 IoTHubTransportMqtt_Subscribe,
AzureIoTClient 4:e472f5ce3473 1340 IoTHubTransportMqtt_Unsubscribe,
AzureIoTClient 4:e472f5ce3473 1341 IoTHubTransportMqtt_DoWork,
AzureIoTClient 4:e472f5ce3473 1342 IoTHubTransportMqtt_GetSendStatus
Azure.IoT Build 0:5e72a75c31b8 1343 };
Azure.IoT Build 0:5e72a75c31b8 1344
Azure.IoT Build 0:5e72a75c31b8 1345 /* 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 1346 IoTHubTransport_Destroy = IoTHubTransportMqtt_Destroy
Azure.IoT Build 0:5e72a75c31b8 1347 IoTHubTransport_Subscribe = IoTHubTransportMqtt_Subscribe
Azure.IoT Build 0:5e72a75c31b8 1348 IoTHubTransport_Unsubscribe = IoTHubTransportMqtt_Unsubscribe
Azure.IoT Build 0:5e72a75c31b8 1349 IoTHubTransport_DoWork = IoTHubTransportMqtt_DoWork
Azure.IoT Build 0:5e72a75c31b8 1350 IoTHubTransport_SetOption = IoTHubTransportMqtt_SetOption] */
AzureIoTClient 4:e472f5ce3473 1351 extern const TRANSPORT_PROVIDER* MQTT_Protocol(void)
Azure.IoT Build 0:5e72a75c31b8 1352 {
AzureIoTClient 4:e472f5ce3473 1353 return &myfunc;
Azure.IoT Build 0:5e72a75c31b8 1354 }