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@1:f2e563755d91, 2016-04-08 (annotated)

Committer:
Azure.IoT Build
Date:
Fri Apr 08 13:24:20 2016 -0700
Revision:
1:f2e563755d91
Parent:
0:5e72a75c31b8
Child:
2:9db4da50abaa
1.0.4

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
Azure.IoT Build 0:5e72a75c31b8 25 #include "iothub_client_version.h"
Azure.IoT Build 0:5e72a75c31b8 26
Azure.IoT Build 0:5e72a75c31b8 27 #include <stdarg.h>
Azure.IoT Build 0:5e72a75c31b8 28 #include <stdio.h>
Azure.IoT Build 0:5e72a75c31b8 29
Azure.IoT Build 0:5e72a75c31b8 30 #define SAS_TOKEN_DEFAULT_LIFETIME 3600
Azure.IoT Build 0:5e72a75c31b8 31 #define EPOCH_TIME_T_VALUE 0
Azure.IoT Build 1:f2e563755d91 32 #define DEFAULT_MQTT_KEEPALIVE 4*60 // 4 min
Azure.IoT Build 0:5e72a75c31b8 33 #define DEFAULT_PORT_NUMBER 8883
Azure.IoT Build 0:5e72a75c31b8 34 #define DEFAULT_TEMP_STRING_LEN 256
Azure.IoT Build 0:5e72a75c31b8 35 #define BUILD_CONFIG_USERNAME 24
Azure.IoT Build 0:5e72a75c31b8 36 #define EVENT_TOPIC_DEFAULT_LEN 27
Azure.IoT Build 0:5e72a75c31b8 37 #define SAS_TOKEN_DEFAULT_LEN 10
Azure.IoT Build 0:5e72a75c31b8 38 #define RESEND_TIMEOUT_VALUE_MIN 1*60
Azure.IoT Build 0:5e72a75c31b8 39 #define MAX_SEND_RECOUNT_LIMIT 2
Azure.IoT Build 0:5e72a75c31b8 40
Azure.IoT Build 0:5e72a75c31b8 41 TICK_COUNTER_HANDLE g_msgTickCounter;
Azure.IoT Build 0:5e72a75c31b8 42
Azure.IoT Build 0:5e72a75c31b8 43 typedef struct MQTTTRANSPORT_HANDLE_DATA_TAG
Azure.IoT Build 0:5e72a75c31b8 44 {
Azure.IoT Build 0:5e72a75c31b8 45 STRING_HANDLE device_id;
Azure.IoT Build 0:5e72a75c31b8 46 STRING_HANDLE device_key;
Azure.IoT Build 0:5e72a75c31b8 47 STRING_HANDLE sasTokenSr;
Azure.IoT Build 0:5e72a75c31b8 48 STRING_HANDLE mqttEventTopic;
Azure.IoT Build 0:5e72a75c31b8 49 STRING_HANDLE mqttMessageTopic;
Azure.IoT Build 0:5e72a75c31b8 50 STRING_HANDLE hostAddress;
Azure.IoT Build 0:5e72a75c31b8 51 // The current mqtt iothub implementation requires that the hub name and the domain suffix be passed as the first of a series of segments
Azure.IoT Build 0:5e72a75c31b8 52 // passed through the username portion of the connection frame.
Azure.IoT Build 0:5e72a75c31b8 53 // The second segment will contain the device id. The two segments are delemited by a "/".
Azure.IoT Build 0:5e72a75c31b8 54 // The first segment can be a maximum 256 characters.
Azure.IoT Build 0:5e72a75c31b8 55 // The second segment can be a maximum 128 characters.
Azure.IoT Build 0:5e72a75c31b8 56 // With the / delimeter you have 384 chars (Plus a terminator of 0).
Azure.IoT Build 0:5e72a75c31b8 57 STRING_HANDLE configPassedThroughUsername;
Azure.IoT Build 0:5e72a75c31b8 58 int portNum;
Azure.IoT Build 0:5e72a75c31b8 59 MQTT_CLIENT_HANDLE mqttClient;
Azure.IoT Build 0:5e72a75c31b8 60 uint16_t packetId;
Azure.IoT Build 0:5e72a75c31b8 61 bool isRegistered;
Azure.IoT Build 0:5e72a75c31b8 62 bool connected;
Azure.IoT Build 0:5e72a75c31b8 63 bool subscribed;
Azure.IoT Build 0:5e72a75c31b8 64 bool receiveMessages;
Azure.IoT Build 0:5e72a75c31b8 65 bool destroyCalled;
Azure.IoT Build 0:5e72a75c31b8 66 DLIST_ENTRY waitingForAck;
Azure.IoT Build 0:5e72a75c31b8 67 PDLIST_ENTRY waitingToSend;
Azure.IoT Build 0:5e72a75c31b8 68 IOTHUB_CLIENT_LL_HANDLE llClientHandle;
Azure.IoT Build 0:5e72a75c31b8 69 CONTROL_PACKET_TYPE currPacketState;
Azure.IoT Build 0:5e72a75c31b8 70 XIO_HANDLE xioTransport;
Azure.IoT Build 0:5e72a75c31b8 71 int keepAliveValue;
Azure.IoT Build 0:5e72a75c31b8 72 } MQTTTRANSPORT_HANDLE_DATA, *PMQTTTRANSPORT_HANDLE_DATA;
Azure.IoT Build 0:5e72a75c31b8 73
Azure.IoT Build 0:5e72a75c31b8 74 typedef struct MQTT_MESSAGE_DETAILS_LIST_TAG
Azure.IoT Build 0:5e72a75c31b8 75 {
Azure.IoT Build 0:5e72a75c31b8 76 uint64_t msgPublishTime;
Azure.IoT Build 0:5e72a75c31b8 77 size_t retryCount;
Azure.IoT Build 0:5e72a75c31b8 78 IOTHUB_MESSAGE_LIST* iotHubMessageEntry;
Azure.IoT Build 0:5e72a75c31b8 79 void* context;
Azure.IoT Build 0:5e72a75c31b8 80 uint16_t msgPacketId;
Azure.IoT Build 0:5e72a75c31b8 81 DLIST_ENTRY entry;
Azure.IoT Build 0:5e72a75c31b8 82 } MQTT_MESSAGE_DETAILS_LIST, *PMQTT_MESSAGE_DETAILS_LIST;
Azure.IoT Build 0:5e72a75c31b8 83
Azure.IoT Build 0:5e72a75c31b8 84 static void defaultPrintLogFunction(unsigned int options, char* format, ...)
Azure.IoT Build 0:5e72a75c31b8 85 {
Azure.IoT Build 0:5e72a75c31b8 86 va_list args;
Azure.IoT Build 0:5e72a75c31b8 87 va_start(args, format);
Azure.IoT Build 0:5e72a75c31b8 88 (void)vprintf(format, args);
Azure.IoT Build 0:5e72a75c31b8 89 va_end(args);
Azure.IoT Build 0:5e72a75c31b8 90
Azure.IoT Build 0:5e72a75c31b8 91 if (options & LOG_LINE)
Azure.IoT Build 0:5e72a75c31b8 92 {
Azure.IoT Build 0:5e72a75c31b8 93 (void)printf("\r\n");
Azure.IoT Build 0:5e72a75c31b8 94 }
Azure.IoT Build 0:5e72a75c31b8 95 }
Azure.IoT Build 0:5e72a75c31b8 96
Azure.IoT Build 0:5e72a75c31b8 97 static void sendMsgComplete(IOTHUB_MESSAGE_LIST* iothubMsgList, PMQTTTRANSPORT_HANDLE_DATA transportState, IOTHUB_BATCHSTATE_RESULT batchResult)
Azure.IoT Build 0:5e72a75c31b8 98 {
Azure.IoT Build 0:5e72a75c31b8 99 DLIST_ENTRY messageCompleted;
Azure.IoT Build 0:5e72a75c31b8 100 DList_InitializeListHead(&messageCompleted);
Azure.IoT Build 0:5e72a75c31b8 101 DList_InsertTailList(&messageCompleted, &(iothubMsgList->entry));
Azure.IoT Build 0:5e72a75c31b8 102 IoTHubClient_LL_SendComplete(transportState->llClientHandle, &messageCompleted, batchResult);
Azure.IoT Build 0:5e72a75c31b8 103 }
Azure.IoT Build 0:5e72a75c31b8 104
Azure.IoT Build 0:5e72a75c31b8 105 static int publishMqttMessage(PMQTTTRANSPORT_HANDLE_DATA transportState, MQTT_MESSAGE_DETAILS_LIST* mqttMsgEntry, const unsigned char* payload, size_t len)
Azure.IoT Build 0:5e72a75c31b8 106 {
Azure.IoT Build 0:5e72a75c31b8 107 int result;
Azure.IoT Build 0:5e72a75c31b8 108 MQTT_MESSAGE_HANDLE mqttMsg = mqttmessage_create(transportState->packetId++, STRING_c_str(transportState->mqttEventTopic), DELIVER_AT_LEAST_ONCE, payload, len);
Azure.IoT Build 0:5e72a75c31b8 109 if (mqttMsg == NULL)
Azure.IoT Build 0:5e72a75c31b8 110 {
Azure.IoT Build 0:5e72a75c31b8 111 result = __LINE__;
Azure.IoT Build 0:5e72a75c31b8 112 }
Azure.IoT Build 0:5e72a75c31b8 113 else
Azure.IoT Build 0:5e72a75c31b8 114 {
Azure.IoT Build 0:5e72a75c31b8 115 if (mqtt_client_publish(transportState->mqttClient, mqttMsg) != 0)
Azure.IoT Build 0:5e72a75c31b8 116 {
Azure.IoT Build 0:5e72a75c31b8 117 result = __LINE__;
Azure.IoT Build 0:5e72a75c31b8 118 }
Azure.IoT Build 0:5e72a75c31b8 119 else
Azure.IoT Build 0:5e72a75c31b8 120 {
Azure.IoT Build 0:5e72a75c31b8 121 mqttMsgEntry->retryCount++;
Azure.IoT Build 0:5e72a75c31b8 122 (void)tickcounter_get_current_ms(g_msgTickCounter, &mqttMsgEntry->msgPublishTime);
Azure.IoT Build 0:5e72a75c31b8 123 result = 0;
Azure.IoT Build 0:5e72a75c31b8 124 }
Azure.IoT Build 0:5e72a75c31b8 125 mqttmessage_destroy(mqttMsg);
Azure.IoT Build 0:5e72a75c31b8 126 }
Azure.IoT Build 0:5e72a75c31b8 127 return result;
Azure.IoT Build 0:5e72a75c31b8 128 }
Azure.IoT Build 0:5e72a75c31b8 129
Azure.IoT Build 0:5e72a75c31b8 130 static void MqttRecvCallback(MQTT_MESSAGE_HANDLE msgHandle, void* callbackCtx)
Azure.IoT Build 0:5e72a75c31b8 131 {
Azure.IoT Build 0:5e72a75c31b8 132 if (msgHandle != NULL && callbackCtx != NULL)
Azure.IoT Build 0:5e72a75c31b8 133 {
Azure.IoT Build 0:5e72a75c31b8 134 const APP_PAYLOAD* appPayload = mqttmessage_getApplicationMsg(msgHandle);
Azure.IoT Build 0:5e72a75c31b8 135 IOTHUB_MESSAGE_HANDLE IoTHubMessage = IoTHubMessage_CreateFromByteArray(appPayload->message, appPayload->length);
Azure.IoT Build 0:5e72a75c31b8 136 if (IoTHubMessage == NULL)
Azure.IoT Build 0:5e72a75c31b8 137 {
Azure.IoT Build 0:5e72a75c31b8 138 LogError("IotHub Message creation has failed.\r\n");
Azure.IoT Build 0:5e72a75c31b8 139 }
Azure.IoT Build 0:5e72a75c31b8 140 else
Azure.IoT Build 0:5e72a75c31b8 141 {
Azure.IoT Build 0:5e72a75c31b8 142 PMQTTTRANSPORT_HANDLE_DATA transportData = (PMQTTTRANSPORT_HANDLE_DATA)callbackCtx;
Azure.IoT Build 0:5e72a75c31b8 143 if (IoTHubClient_LL_MessageCallback(transportData->llClientHandle, IoTHubMessage) != IOTHUBMESSAGE_ACCEPTED)
Azure.IoT Build 0:5e72a75c31b8 144 {
Azure.IoT Build 0:5e72a75c31b8 145 LogError("Event not accepted by our client.\r\n");
Azure.IoT Build 0:5e72a75c31b8 146 }
Azure.IoT Build 0:5e72a75c31b8 147 IoTHubMessage_Destroy(IoTHubMessage);
Azure.IoT Build 0:5e72a75c31b8 148 }
Azure.IoT Build 0:5e72a75c31b8 149 }
Azure.IoT Build 0:5e72a75c31b8 150 }
Azure.IoT Build 0:5e72a75c31b8 151
Azure.IoT Build 0:5e72a75c31b8 152 static void MqttOpCompleteCallback(MQTT_CLIENT_HANDLE handle, MQTT_CLIENT_EVENT_RESULT actionResult, const void* msgInfo, void* callbackCtx)
Azure.IoT Build 0:5e72a75c31b8 153 {
Azure.IoT Build 0:5e72a75c31b8 154 (void)handle;
Azure.IoT Build 0:5e72a75c31b8 155 if (callbackCtx != NULL)
Azure.IoT Build 0:5e72a75c31b8 156 {
Azure.IoT Build 0:5e72a75c31b8 157 PMQTTTRANSPORT_HANDLE_DATA transportData = (PMQTTTRANSPORT_HANDLE_DATA)callbackCtx;
Azure.IoT Build 0:5e72a75c31b8 158
Azure.IoT Build 0:5e72a75c31b8 159 switch (actionResult)
Azure.IoT Build 0:5e72a75c31b8 160 {
Azure.IoT Build 0:5e72a75c31b8 161 case MQTT_CLIENT_ON_PUBLISH_ACK:
Azure.IoT Build 0:5e72a75c31b8 162 case MQTT_CLIENT_ON_PUBLISH_COMP:
Azure.IoT Build 0:5e72a75c31b8 163 {
Azure.IoT Build 0:5e72a75c31b8 164 const PUBLISH_ACK* puback = (const PUBLISH_ACK*)msgInfo;
Azure.IoT Build 0:5e72a75c31b8 165 if (puback != NULL)
Azure.IoT Build 0:5e72a75c31b8 166 {
Azure.IoT Build 0:5e72a75c31b8 167 PDLIST_ENTRY currentListEntry = transportData->waitingForAck.Flink;
Azure.IoT Build 0:5e72a75c31b8 168 while (currentListEntry != &transportData->waitingForAck)
Azure.IoT Build 0:5e72a75c31b8 169 {
Azure.IoT Build 0:5e72a75c31b8 170 MQTT_MESSAGE_DETAILS_LIST* mqttMsgEntry = containingRecord(currentListEntry, MQTT_MESSAGE_DETAILS_LIST, entry);
Azure.IoT Build 0:5e72a75c31b8 171 DLIST_ENTRY saveListEntry;
Azure.IoT Build 0:5e72a75c31b8 172 saveListEntry.Flink = currentListEntry->Flink;
Azure.IoT Build 0:5e72a75c31b8 173
Azure.IoT Build 0:5e72a75c31b8 174 if (puback->packetId == mqttMsgEntry->msgPacketId)
Azure.IoT Build 0:5e72a75c31b8 175 {
Azure.IoT Build 0:5e72a75c31b8 176 (void)DList_RemoveEntryList(currentListEntry); //First remove the item from Waiting for Ack List.
Azure.IoT Build 0:5e72a75c31b8 177 sendMsgComplete(mqttMsgEntry->iotHubMessageEntry, transportData, IOTHUB_BATCHSTATE_SUCCESS);
Azure.IoT Build 0:5e72a75c31b8 178 free(mqttMsgEntry);
Azure.IoT Build 0:5e72a75c31b8 179 }
Azure.IoT Build 0:5e72a75c31b8 180 currentListEntry = saveListEntry.Flink;
Azure.IoT Build 0:5e72a75c31b8 181 }
Azure.IoT Build 0:5e72a75c31b8 182 }
Azure.IoT Build 0:5e72a75c31b8 183 break;
Azure.IoT Build 0:5e72a75c31b8 184 }
Azure.IoT Build 0:5e72a75c31b8 185 case MQTT_CLIENT_ON_CONNACK:
Azure.IoT Build 0:5e72a75c31b8 186 {
Azure.IoT Build 0:5e72a75c31b8 187 const CONNECT_ACK* connack = (const CONNECT_ACK*)msgInfo;
Azure.IoT Build 0:5e72a75c31b8 188 if (connack != NULL)
Azure.IoT Build 0:5e72a75c31b8 189 {
Azure.IoT Build 0:5e72a75c31b8 190 if (connack->returnCode == CONNECTION_ACCEPTED)
Azure.IoT Build 0:5e72a75c31b8 191 {
Azure.IoT Build 0:5e72a75c31b8 192 // The connect packet has been acked
Azure.IoT Build 0:5e72a75c31b8 193 transportData->currPacketState = CONNACK_TYPE;
Azure.IoT Build 0:5e72a75c31b8 194 }
Azure.IoT Build 0:5e72a75c31b8 195 else
Azure.IoT Build 0:5e72a75c31b8 196 {
Azure.IoT Build 0:5e72a75c31b8 197 LogError("Connection not accepted, return code: %d.\r\n", connack->returnCode);
Azure.IoT Build 0:5e72a75c31b8 198 (void)mqtt_client_disconnect(transportData->mqttClient);
Azure.IoT Build 0:5e72a75c31b8 199 transportData->connected = false;
Azure.IoT Build 0:5e72a75c31b8 200 transportData->currPacketState = PACKET_TYPE_ERROR;
Azure.IoT Build 0:5e72a75c31b8 201 }
Azure.IoT Build 0:5e72a75c31b8 202 }
Azure.IoT Build 0:5e72a75c31b8 203 else
Azure.IoT Build 0:5e72a75c31b8 204 {
Azure.IoT Build 0:5e72a75c31b8 205 LogError("MQTT_CLIENT_ON_CONNACK CONNACK parameter is NULL.\r\n");
Azure.IoT Build 0:5e72a75c31b8 206 }
Azure.IoT Build 0:5e72a75c31b8 207 break;
Azure.IoT Build 0:5e72a75c31b8 208 }
Azure.IoT Build 0:5e72a75c31b8 209 case MQTT_CLIENT_ON_SUBSCRIBE_ACK:
Azure.IoT Build 0:5e72a75c31b8 210 {
Azure.IoT Build 0:5e72a75c31b8 211 const SUBSCRIBE_ACK* suback = (const SUBSCRIBE_ACK*)msgInfo;
Azure.IoT Build 0:5e72a75c31b8 212 if (suback != NULL)
Azure.IoT Build 0:5e72a75c31b8 213 {
Azure.IoT Build 0:5e72a75c31b8 214 if (suback->qosCount == 1)
Azure.IoT Build 0:5e72a75c31b8 215 {
Azure.IoT Build 0:5e72a75c31b8 216 // The connect packet has been acked
Azure.IoT Build 0:5e72a75c31b8 217 transportData->currPacketState = SUBACK_TYPE;
Azure.IoT Build 0:5e72a75c31b8 218 }
Azure.IoT Build 0:5e72a75c31b8 219 else
Azure.IoT Build 0:5e72a75c31b8 220 {
Azure.IoT Build 0:5e72a75c31b8 221 LogError("QOS count was not expected: %d.\r\n", (int)suback->qosCount);
Azure.IoT Build 0:5e72a75c31b8 222 }
Azure.IoT Build 0:5e72a75c31b8 223 }
Azure.IoT Build 0:5e72a75c31b8 224 break;
Azure.IoT Build 0:5e72a75c31b8 225 }
Azure.IoT Build 0:5e72a75c31b8 226 case MQTT_CLIENT_ON_PUBLISH_RECV:
Azure.IoT Build 0:5e72a75c31b8 227 case MQTT_CLIENT_ON_PUBLISH_REL:
Azure.IoT Build 0:5e72a75c31b8 228 {
Azure.IoT Build 0:5e72a75c31b8 229 // Currently not used
Azure.IoT Build 0:5e72a75c31b8 230 break;
Azure.IoT Build 0:5e72a75c31b8 231 }
Azure.IoT Build 0:5e72a75c31b8 232 case MQTT_CLIENT_ON_DISCONNECT:
Azure.IoT Build 0:5e72a75c31b8 233 {
Azure.IoT Build 0:5e72a75c31b8 234 // Close the client so we can reconnect again
Azure.IoT Build 0:5e72a75c31b8 235 transportData->connected = false;
Azure.IoT Build 0:5e72a75c31b8 236 transportData->currPacketState = DISCONNECT_TYPE;
Azure.IoT Build 0:5e72a75c31b8 237 break;
Azure.IoT Build 0:5e72a75c31b8 238 }
Azure.IoT Build 0:5e72a75c31b8 239 case MQTT_CLIENT_ON_ERROR:
Azure.IoT Build 0:5e72a75c31b8 240 {
Azure.IoT Build 0:5e72a75c31b8 241 xio_close(transportData->xioTransport, NULL, NULL);
Azure.IoT Build 0:5e72a75c31b8 242 transportData->connected = false;
Azure.IoT Build 0:5e72a75c31b8 243 transportData->subscribed = false;
Azure.IoT Build 0:5e72a75c31b8 244 transportData->currPacketState = PACKET_TYPE_ERROR;
Azure.IoT Build 0:5e72a75c31b8 245 }
Azure.IoT Build 0:5e72a75c31b8 246 }
Azure.IoT Build 0:5e72a75c31b8 247 }
Azure.IoT Build 0:5e72a75c31b8 248 }
Azure.IoT Build 0:5e72a75c31b8 249
Azure.IoT Build 0:5e72a75c31b8 250 const XIO_HANDLE getIoTransportProvider(const char* fqdn, int port)
Azure.IoT Build 0:5e72a75c31b8 251 {
Azure.IoT Build 0:5e72a75c31b8 252 TLSIO_CONFIG tls_io_config = { fqdn, port };
Azure.IoT Build 0:5e72a75c31b8 253 const IO_INTERFACE_DESCRIPTION* io_interface_description = platform_get_default_tlsio();
Azure.IoT Build 0:5e72a75c31b8 254 return (void*)xio_create(io_interface_description, &tls_io_config, NULL/*defaultPrintLogFunction*/);
Azure.IoT Build 0:5e72a75c31b8 255 }
Azure.IoT Build 0:5e72a75c31b8 256
Azure.IoT Build 0:5e72a75c31b8 257 static int SubscribeToMqttProtocol(PMQTTTRANSPORT_HANDLE_DATA transportState)
Azure.IoT Build 0:5e72a75c31b8 258 {
Azure.IoT Build 0:5e72a75c31b8 259 int result;
Azure.IoT Build 0:5e72a75c31b8 260
Azure.IoT Build 0:5e72a75c31b8 261 if (transportState->receiveMessages && !transportState->subscribed)
Azure.IoT Build 0:5e72a75c31b8 262 {
Azure.IoT Build 0:5e72a75c31b8 263 SUBSCRIBE_PAYLOAD subscribe[] = {
Azure.IoT Build 0:5e72a75c31b8 264 { STRING_c_str(transportState->mqttMessageTopic), DELIVER_AT_LEAST_ONCE }
Azure.IoT Build 0:5e72a75c31b8 265 };
Azure.IoT Build 0:5e72a75c31b8 266 /* Codes_SRS_IOTHUB_MQTT_TRANSPORT_07_016: [IoTHubTransportMqtt_Subscribe shall call mqtt_client_subscribe to subscribe to the Message Topic.] */
Azure.IoT Build 0:5e72a75c31b8 267 if (mqtt_client_subscribe(transportState->mqttClient, transportState->packetId++, subscribe, 1) != 0)
Azure.IoT Build 0:5e72a75c31b8 268 {
Azure.IoT Build 0:5e72a75c31b8 269 /* Codes_SRS_IOTHUB_MQTT_TRANSPORT_07_017: [Upon failure IoTHubTransportMqtt_Subscribe shall return a non-zero value.] */
Azure.IoT Build 0:5e72a75c31b8 270 result = __LINE__;
Azure.IoT Build 0:5e72a75c31b8 271 }
Azure.IoT Build 0:5e72a75c31b8 272 else
Azure.IoT Build 0:5e72a75c31b8 273 {
Azure.IoT Build 0:5e72a75c31b8 274 /* Codes_SRS_IOTHUB_MQTT_TRANSPORT_07_018: [On success IoTHubTransportMqtt_Subscribe shall return 0.] */
Azure.IoT Build 0:5e72a75c31b8 275 transportState->subscribed = true;
Azure.IoT Build 0:5e72a75c31b8 276 transportState->currPacketState = SUBSCRIBE_TYPE;
Azure.IoT Build 0:5e72a75c31b8 277 result = 0;
Azure.IoT Build 0:5e72a75c31b8 278 }
Azure.IoT Build 0:5e72a75c31b8 279 }
Azure.IoT Build 0:5e72a75c31b8 280 else
Azure.IoT Build 0:5e72a75c31b8 281 {
Azure.IoT Build 0:5e72a75c31b8 282 if (transportState->receiveMessages)
Azure.IoT Build 0:5e72a75c31b8 283 {
Azure.IoT Build 0:5e72a75c31b8 284 transportState->currPacketState = SUBSCRIBE_TYPE;
Azure.IoT Build 0:5e72a75c31b8 285 }
Azure.IoT Build 0:5e72a75c31b8 286 else
Azure.IoT Build 0:5e72a75c31b8 287 {
Azure.IoT Build 0:5e72a75c31b8 288 transportState->currPacketState = PUBLISH_TYPE;
Azure.IoT Build 0:5e72a75c31b8 289 }
Azure.IoT Build 0:5e72a75c31b8 290 }
Azure.IoT Build 0:5e72a75c31b8 291 return result;
Azure.IoT Build 0:5e72a75c31b8 292 }
Azure.IoT Build 0:5e72a75c31b8 293
Azure.IoT Build 0:5e72a75c31b8 294 static const unsigned char* RetrieveMessagePayload(IOTHUB_MESSAGE_HANDLE messageHandle, size_t* length)
Azure.IoT Build 0:5e72a75c31b8 295 {
Azure.IoT Build 0:5e72a75c31b8 296 const unsigned char* result;
Azure.IoT Build 0:5e72a75c31b8 297
Azure.IoT Build 0:5e72a75c31b8 298 IOTHUBMESSAGE_CONTENT_TYPE contentType = IoTHubMessage_GetContentType(messageHandle);
Azure.IoT Build 0:5e72a75c31b8 299 if (contentType == IOTHUBMESSAGE_BYTEARRAY)
Azure.IoT Build 0:5e72a75c31b8 300 {
Azure.IoT Build 0:5e72a75c31b8 301 if (IoTHubMessage_GetByteArray(messageHandle, &result, length) != IOTHUB_MESSAGE_OK)
Azure.IoT Build 0:5e72a75c31b8 302 {
Azure.IoT Build 0:5e72a75c31b8 303 LogError("Failure result from IoTHubMessage_GetByteArray\r\n");
Azure.IoT Build 0:5e72a75c31b8 304 result = NULL;
Azure.IoT Build 0:5e72a75c31b8 305 *length = 0;
Azure.IoT Build 0:5e72a75c31b8 306 }
Azure.IoT Build 0:5e72a75c31b8 307 }
Azure.IoT Build 0:5e72a75c31b8 308 else if (contentType == IOTHUBMESSAGE_STRING)
Azure.IoT Build 0:5e72a75c31b8 309 {
Azure.IoT Build 0:5e72a75c31b8 310 result = (const unsigned char*)IoTHubMessage_GetString(messageHandle);
Azure.IoT Build 0:5e72a75c31b8 311 if (result == NULL)
Azure.IoT Build 0:5e72a75c31b8 312 {
Azure.IoT Build 0:5e72a75c31b8 313 LogError("Failure result from IoTHubMessage_GetString\r\n");
Azure.IoT Build 0:5e72a75c31b8 314 result = NULL;
Azure.IoT Build 0:5e72a75c31b8 315 *length = 0;
Azure.IoT Build 0:5e72a75c31b8 316 }
Azure.IoT Build 0:5e72a75c31b8 317 else
Azure.IoT Build 0:5e72a75c31b8 318 {
Azure.IoT Build 0:5e72a75c31b8 319 *length = strlen((const char*)result);
Azure.IoT Build 0:5e72a75c31b8 320 }
Azure.IoT Build 0:5e72a75c31b8 321 }
Azure.IoT Build 0:5e72a75c31b8 322 else
Azure.IoT Build 0:5e72a75c31b8 323 {
Azure.IoT Build 0:5e72a75c31b8 324 result = NULL;
Azure.IoT Build 0:5e72a75c31b8 325 *length = 0;
Azure.IoT Build 0:5e72a75c31b8 326 }
Azure.IoT Build 0:5e72a75c31b8 327 return result;
Azure.IoT Build 0:5e72a75c31b8 328 }
Azure.IoT Build 0:5e72a75c31b8 329
Azure.IoT Build 0:5e72a75c31b8 330 static STRING_HANDLE ConstructSasToken(const char* iothubName, const char* iotHubSuffix, const char* deviceId)
Azure.IoT Build 0:5e72a75c31b8 331 {
Azure.IoT Build 0:5e72a75c31b8 332 STRING_HANDLE result;
Azure.IoT Build 0:5e72a75c31b8 333 size_t len = strlen(iothubName);
Azure.IoT Build 0:5e72a75c31b8 334 len += strlen(iotHubSuffix);
Azure.IoT Build 0:5e72a75c31b8 335 len += strlen(deviceId);
Azure.IoT Build 0:5e72a75c31b8 336
Azure.IoT Build 0:5e72a75c31b8 337 char* sasToken = malloc(len + SAS_TOKEN_DEFAULT_LEN + 1);
Azure.IoT Build 0:5e72a75c31b8 338 if (sasToken == NULL)
Azure.IoT Build 0:5e72a75c31b8 339 {
Azure.IoT Build 0:5e72a75c31b8 340 result = NULL;
Azure.IoT Build 0:5e72a75c31b8 341 }
Azure.IoT Build 0:5e72a75c31b8 342 else
Azure.IoT Build 0:5e72a75c31b8 343 {
Azure.IoT Build 0:5e72a75c31b8 344 (void)sprintf(sasToken, "%s.%s/devices/%s", iothubName, iotHubSuffix, deviceId);
Azure.IoT Build 0:5e72a75c31b8 345 result = STRING_construct(sasToken);
Azure.IoT Build 0:5e72a75c31b8 346 free(sasToken);
Azure.IoT Build 0:5e72a75c31b8 347 }
Azure.IoT Build 0:5e72a75c31b8 348 return result;
Azure.IoT Build 0:5e72a75c31b8 349 }
Azure.IoT Build 0:5e72a75c31b8 350
Azure.IoT Build 0:5e72a75c31b8 351 static STRING_HANDLE ConstructEventTopic(const char* deviceId)
Azure.IoT Build 0:5e72a75c31b8 352 {
Azure.IoT Build 0:5e72a75c31b8 353 STRING_HANDLE result;
Azure.IoT Build 0:5e72a75c31b8 354 size_t len = strlen(deviceId);
Azure.IoT Build 0:5e72a75c31b8 355
Azure.IoT Build 0:5e72a75c31b8 356 char* eventTopic = malloc(len + EVENT_TOPIC_DEFAULT_LEN + 1);
Azure.IoT Build 0:5e72a75c31b8 357 if (eventTopic == NULL)
Azure.IoT Build 0:5e72a75c31b8 358 {
Azure.IoT Build 0:5e72a75c31b8 359 result = NULL;
Azure.IoT Build 0:5e72a75c31b8 360 }
Azure.IoT Build 0:5e72a75c31b8 361 else
Azure.IoT Build 0:5e72a75c31b8 362 {
Azure.IoT Build 0:5e72a75c31b8 363 (void)sprintf(eventTopic, "devices/%s/messages/events/", deviceId);
Azure.IoT Build 0:5e72a75c31b8 364 result = STRING_construct(eventTopic);
Azure.IoT Build 0:5e72a75c31b8 365 free(eventTopic);
Azure.IoT Build 0:5e72a75c31b8 366 }
Azure.IoT Build 0:5e72a75c31b8 367 return result;
Azure.IoT Build 0:5e72a75c31b8 368 }
Azure.IoT Build 0:5e72a75c31b8 369
Azure.IoT Build 0:5e72a75c31b8 370 static STRING_HANDLE ConstructMessageTopic(const char* deviceId)
Azure.IoT Build 0:5e72a75c31b8 371 {
Azure.IoT Build 0:5e72a75c31b8 372 STRING_HANDLE result;
Azure.IoT Build 0:5e72a75c31b8 373 size_t len = strlen(deviceId);
Azure.IoT Build 0:5e72a75c31b8 374
Azure.IoT Build 0:5e72a75c31b8 375 char* messageTopic = malloc(len + 32 + 1);
Azure.IoT Build 0:5e72a75c31b8 376 if (messageTopic == NULL)
Azure.IoT Build 0:5e72a75c31b8 377 {
Azure.IoT Build 0:5e72a75c31b8 378 result = NULL;
Azure.IoT Build 0:5e72a75c31b8 379 }
Azure.IoT Build 0:5e72a75c31b8 380 else
Azure.IoT Build 0:5e72a75c31b8 381 {
Azure.IoT Build 0:5e72a75c31b8 382 (void)sprintf(messageTopic, "devices/%s/messages/devicebound/#", deviceId);
Azure.IoT Build 0:5e72a75c31b8 383 result = STRING_construct(messageTopic);
Azure.IoT Build 0:5e72a75c31b8 384 free(messageTopic);
Azure.IoT Build 0:5e72a75c31b8 385 }
Azure.IoT Build 0:5e72a75c31b8 386 return result;
Azure.IoT Build 0:5e72a75c31b8 387 }
Azure.IoT Build 0:5e72a75c31b8 388
Azure.IoT Build 0:5e72a75c31b8 389 static int GetTransportProviderIfNecessary(PMQTTTRANSPORT_HANDLE_DATA transportState)
Azure.IoT Build 0:5e72a75c31b8 390 {
Azure.IoT Build 0:5e72a75c31b8 391 int result;
Azure.IoT Build 0:5e72a75c31b8 392
Azure.IoT Build 0:5e72a75c31b8 393 if (transportState->xioTransport == NULL)
Azure.IoT Build 0:5e72a75c31b8 394 {
Azure.IoT Build 0:5e72a75c31b8 395 // construct address
Azure.IoT Build 0:5e72a75c31b8 396 const char* hostAddress = STRING_c_str(transportState->hostAddress);
Azure.IoT Build 0:5e72a75c31b8 397 const char* hostName = strstr(hostAddress, "//");
Azure.IoT Build 0:5e72a75c31b8 398 if (hostName == NULL)
Azure.IoT Build 0:5e72a75c31b8 399 {
Azure.IoT Build 0:5e72a75c31b8 400 hostName = hostAddress;
Azure.IoT Build 0:5e72a75c31b8 401 }
Azure.IoT Build 0:5e72a75c31b8 402 else
Azure.IoT Build 0:5e72a75c31b8 403 {
Azure.IoT Build 0:5e72a75c31b8 404 // Increment beyond the double backslash
Azure.IoT Build 0:5e72a75c31b8 405 hostName += 2;
Azure.IoT Build 0:5e72a75c31b8 406 }
Azure.IoT Build 0:5e72a75c31b8 407 transportState->xioTransport = getIoTransportProvider(hostName, transportState->portNum);
Azure.IoT Build 0:5e72a75c31b8 408 if (transportState->xioTransport == NULL)
Azure.IoT Build 0:5e72a75c31b8 409 {
Azure.IoT Build 0:5e72a75c31b8 410 LogError("Unable to create the lower level TLS layer.\r\n");
Azure.IoT Build 0:5e72a75c31b8 411 result = __LINE__;
Azure.IoT Build 0:5e72a75c31b8 412 }
Azure.IoT Build 0:5e72a75c31b8 413 else
Azure.IoT Build 0:5e72a75c31b8 414 {
Azure.IoT Build 0:5e72a75c31b8 415 result = 0;
Azure.IoT Build 0:5e72a75c31b8 416 }
Azure.IoT Build 0:5e72a75c31b8 417 }
Azure.IoT Build 0:5e72a75c31b8 418 else
Azure.IoT Build 0:5e72a75c31b8 419 {
Azure.IoT Build 0:5e72a75c31b8 420 result = 0;
Azure.IoT Build 0:5e72a75c31b8 421 }
Azure.IoT Build 0:5e72a75c31b8 422 return result;
Azure.IoT Build 0:5e72a75c31b8 423 }
Azure.IoT Build 0:5e72a75c31b8 424 static int SendMqttConnectMsg(PMQTTTRANSPORT_HANDLE_DATA transportState)
Azure.IoT Build 0:5e72a75c31b8 425 {
Azure.IoT Build 0:5e72a75c31b8 426 int result = 0;
Azure.IoT Build 0:5e72a75c31b8 427
Azure.IoT Build 0:5e72a75c31b8 428 // Construct SAS token
Azure.IoT Build 0:5e72a75c31b8 429 size_t secSinceEpoch = (size_t)(difftime(get_time(NULL), EPOCH_TIME_T_VALUE) + 0);
Azure.IoT Build 0:5e72a75c31b8 430 size_t expiryTime = secSinceEpoch + SAS_TOKEN_DEFAULT_LIFETIME;
Azure.IoT Build 0:5e72a75c31b8 431
Azure.IoT Build 0:5e72a75c31b8 432 // Not checking the success of this variable, if fail it will fail in the SASToken creation and return false;
Azure.IoT Build 0:5e72a75c31b8 433 STRING_HANDLE emptyKeyName = STRING_new();
Azure.IoT Build 0:5e72a75c31b8 434 STRING_HANDLE sasToken = SASToken_Create(transportState->device_key, transportState->sasTokenSr, emptyKeyName, expiryTime);
Azure.IoT Build 0:5e72a75c31b8 435 if (sasToken == NULL)
Azure.IoT Build 0:5e72a75c31b8 436 {
Azure.IoT Build 0:5e72a75c31b8 437 result = __LINE__;
Azure.IoT Build 0:5e72a75c31b8 438 }
Azure.IoT Build 0:5e72a75c31b8 439 else
Azure.IoT Build 0:5e72a75c31b8 440 {
Azure.IoT Build 0:5e72a75c31b8 441 MQTT_CLIENT_OPTIONS options = { 0 };
Azure.IoT Build 0:5e72a75c31b8 442 options.clientId = (char*)STRING_c_str(transportState->device_id);
Azure.IoT Build 0:5e72a75c31b8 443 options.willMessage = NULL;
Azure.IoT Build 0:5e72a75c31b8 444 options.username = (char*)STRING_c_str(transportState->configPassedThroughUsername);
Azure.IoT Build 0:5e72a75c31b8 445 options.password = (char*)STRING_c_str(sasToken);
Azure.IoT Build 0:5e72a75c31b8 446 options.keepAliveInterval = transportState->keepAliveValue;
Azure.IoT Build 0:5e72a75c31b8 447 options.useCleanSession = false;
Azure.IoT Build 0:5e72a75c31b8 448 options.qualityOfServiceValue = DELIVER_AT_LEAST_ONCE;
Azure.IoT Build 0:5e72a75c31b8 449
Azure.IoT Build 0:5e72a75c31b8 450 if ((result = GetTransportProviderIfNecessary(transportState)) == 0)
Azure.IoT Build 0:5e72a75c31b8 451 {
Azure.IoT Build 0:5e72a75c31b8 452 if (mqtt_client_connect(transportState->mqttClient, transportState->xioTransport, &options) != 0)
Azure.IoT Build 0:5e72a75c31b8 453 {
Azure.IoT Build 0:5e72a75c31b8 454 LogError("failure connecting to address %s:%d.\r\n", STRING_c_str(transportState->hostAddress), transportState->portNum);
Azure.IoT Build 0:5e72a75c31b8 455 result = __LINE__;
Azure.IoT Build 0:5e72a75c31b8 456 }
Azure.IoT Build 0:5e72a75c31b8 457 else
Azure.IoT Build 0:5e72a75c31b8 458 {
Azure.IoT Build 0:5e72a75c31b8 459 result = 0;
Azure.IoT Build 0:5e72a75c31b8 460 }
Azure.IoT Build 0:5e72a75c31b8 461 }
Azure.IoT Build 0:5e72a75c31b8 462 }
Azure.IoT Build 0:5e72a75c31b8 463 STRING_delete(emptyKeyName);
Azure.IoT Build 0:5e72a75c31b8 464 STRING_delete(sasToken);
Azure.IoT Build 0:5e72a75c31b8 465 return result;
Azure.IoT Build 0:5e72a75c31b8 466 }
Azure.IoT Build 0:5e72a75c31b8 467
Azure.IoT Build 0:5e72a75c31b8 468 static int InitializeConnection(PMQTTTRANSPORT_HANDLE_DATA transportState)
Azure.IoT Build 0:5e72a75c31b8 469 {
Azure.IoT Build 0:5e72a75c31b8 470 int result = 0;
Azure.IoT Build 0:5e72a75c31b8 471 if (!transportState->connected && !transportState->destroyCalled)
Azure.IoT Build 0:5e72a75c31b8 472 {
Azure.IoT Build 0:5e72a75c31b8 473 if (SendMqttConnectMsg(transportState) != 0)
Azure.IoT Build 0:5e72a75c31b8 474 {
Azure.IoT Build 0:5e72a75c31b8 475 transportState->connected = false;
Azure.IoT Build 0:5e72a75c31b8 476 result = __LINE__;
Azure.IoT Build 0:5e72a75c31b8 477 }
Azure.IoT Build 0:5e72a75c31b8 478 else
Azure.IoT Build 0:5e72a75c31b8 479 {
Azure.IoT Build 0:5e72a75c31b8 480 transportState->connected = true;
Azure.IoT Build 0:5e72a75c31b8 481 result = 0;
Azure.IoT Build 0:5e72a75c31b8 482 }
Azure.IoT Build 0:5e72a75c31b8 483 }
Azure.IoT Build 0:5e72a75c31b8 484 return result;
Azure.IoT Build 0:5e72a75c31b8 485 }
Azure.IoT Build 0:5e72a75c31b8 486
Azure.IoT Build 0:5e72a75c31b8 487 static STRING_HANDLE buildConfigForUsername(const IOTHUB_CLIENT_CONFIG* upperConfig)
Azure.IoT Build 0:5e72a75c31b8 488 {
Azure.IoT Build 0:5e72a75c31b8 489 STRING_HANDLE result;
Azure.IoT Build 0:5e72a75c31b8 490
Azure.IoT Build 0:5e72a75c31b8 491 size_t len = strlen(upperConfig->iotHubName)+strlen(upperConfig->iotHubSuffix)+strlen(upperConfig->deviceId)+strlen(CLIENT_DEVICE_TYPE_PREFIX)+strlen(IOTHUB_SDK_VERSION);
Azure.IoT Build 0:5e72a75c31b8 492 char* eventTopic = malloc(len + BUILD_CONFIG_USERNAME + 1);
Azure.IoT Build 0:5e72a75c31b8 493 if (eventTopic == NULL)
Azure.IoT Build 0:5e72a75c31b8 494 {
Azure.IoT Build 0:5e72a75c31b8 495 result = NULL;
Azure.IoT Build 0:5e72a75c31b8 496 }
Azure.IoT Build 0:5e72a75c31b8 497 else
Azure.IoT Build 0:5e72a75c31b8 498 {
Azure.IoT Build 0:5e72a75c31b8 499 (void)sprintf(eventTopic, "%s.%s/%s/DeviceClientType=%s%%2F%s", upperConfig->iotHubName, upperConfig->iotHubSuffix, upperConfig->deviceId, CLIENT_DEVICE_TYPE_PREFIX, IOTHUB_SDK_VERSION);
Azure.IoT Build 0:5e72a75c31b8 500 result = STRING_construct(eventTopic);
Azure.IoT Build 0:5e72a75c31b8 501 free(eventTopic);
Azure.IoT Build 0:5e72a75c31b8 502 }
Azure.IoT Build 0:5e72a75c31b8 503 return result;
Azure.IoT Build 0:5e72a75c31b8 504 }
Azure.IoT Build 0:5e72a75c31b8 505
Azure.IoT Build 0:5e72a75c31b8 506 static PMQTTTRANSPORT_HANDLE_DATA InitializeTransportHandleData(const IOTHUB_CLIENT_CONFIG* upperConfig, PDLIST_ENTRY waitingToSend)
Azure.IoT Build 0:5e72a75c31b8 507 {
Azure.IoT Build 0:5e72a75c31b8 508 PMQTTTRANSPORT_HANDLE_DATA state = (PMQTTTRANSPORT_HANDLE_DATA)malloc(sizeof(MQTTTRANSPORT_HANDLE_DATA));
Azure.IoT Build 0:5e72a75c31b8 509 if (state == NULL)
Azure.IoT Build 0:5e72a75c31b8 510 {
Azure.IoT Build 0:5e72a75c31b8 511 LogError("Could not create MQTT transport state. Memory allocation failed.\r\n");
Azure.IoT Build 0:5e72a75c31b8 512 }
Azure.IoT Build 0:5e72a75c31b8 513 else if ((state->device_id = STRING_construct(upperConfig->deviceId)) == NULL)
Azure.IoT Build 0:5e72a75c31b8 514 {
Azure.IoT Build 0:5e72a75c31b8 515 free(state);
Azure.IoT Build 0:5e72a75c31b8 516 state = NULL;
Azure.IoT Build 0:5e72a75c31b8 517 }
Azure.IoT Build 0:5e72a75c31b8 518 else if ((state->device_key = STRING_construct(upperConfig->deviceKey)) == NULL)
Azure.IoT Build 0:5e72a75c31b8 519 {
Azure.IoT Build 0:5e72a75c31b8 520 LogError("Could not create device key for MQTT\r\n");
Azure.IoT Build 0:5e72a75c31b8 521 STRING_delete(state->device_id);
Azure.IoT Build 0:5e72a75c31b8 522 free(state);
Azure.IoT Build 0:5e72a75c31b8 523 state = NULL;
Azure.IoT Build 0:5e72a75c31b8 524 }
Azure.IoT Build 0:5e72a75c31b8 525 else if ( (state->sasTokenSr = ConstructSasToken(upperConfig->iotHubName, upperConfig->iotHubSuffix, upperConfig->deviceId) ) == NULL)
Azure.IoT Build 0:5e72a75c31b8 526 {
Azure.IoT Build 0:5e72a75c31b8 527 LogError("Could not create Sas Token Sr String.\r\n");
Azure.IoT Build 0:5e72a75c31b8 528 STRING_delete(state->device_key);
Azure.IoT Build 0:5e72a75c31b8 529 STRING_delete(state->device_id);
Azure.IoT Build 0:5e72a75c31b8 530 free(state);
Azure.IoT Build 0:5e72a75c31b8 531 state = NULL;
Azure.IoT Build 0:5e72a75c31b8 532 }
Azure.IoT Build 0:5e72a75c31b8 533 else if ( (state->mqttEventTopic = ConstructEventTopic(upperConfig->deviceId) ) == NULL)
Azure.IoT Build 0:5e72a75c31b8 534 {
Azure.IoT Build 0:5e72a75c31b8 535 LogError("Could not create mqttEventTopic for MQTT\r\n");
Azure.IoT Build 0:5e72a75c31b8 536 STRING_delete(state->sasTokenSr);
Azure.IoT Build 0:5e72a75c31b8 537 STRING_delete(state->device_key);
Azure.IoT Build 0:5e72a75c31b8 538 STRING_delete(state->device_id);
Azure.IoT Build 0:5e72a75c31b8 539 free(state);
Azure.IoT Build 0:5e72a75c31b8 540 state = NULL;
Azure.IoT Build 0:5e72a75c31b8 541 }
Azure.IoT Build 0:5e72a75c31b8 542 else if ((state->mqttMessageTopic = ConstructMessageTopic(upperConfig->deviceId) ) == NULL)
Azure.IoT Build 0:5e72a75c31b8 543 {
Azure.IoT Build 0:5e72a75c31b8 544 LogError("Could not create mqttMessageTopic for MQTT\r\n");
Azure.IoT Build 0:5e72a75c31b8 545 STRING_delete(state->mqttEventTopic);
Azure.IoT Build 0:5e72a75c31b8 546 STRING_delete(state->sasTokenSr);
Azure.IoT Build 0:5e72a75c31b8 547 STRING_delete(state->device_key);
Azure.IoT Build 0:5e72a75c31b8 548 STRING_delete(state->device_id);
Azure.IoT Build 0:5e72a75c31b8 549 free(state);
Azure.IoT Build 0:5e72a75c31b8 550 state = NULL;
Azure.IoT Build 0:5e72a75c31b8 551 }
Azure.IoT Build 0:5e72a75c31b8 552 else
Azure.IoT Build 0:5e72a75c31b8 553 {
Azure.IoT Build 0:5e72a75c31b8 554 state->mqttClient = mqtt_client_init(MqttRecvCallback, MqttOpCompleteCallback, state, defaultPrintLogFunction);
Azure.IoT Build 0:5e72a75c31b8 555 if (state->mqttClient == NULL)
Azure.IoT Build 0:5e72a75c31b8 556 {
Azure.IoT Build 0:5e72a75c31b8 557 STRING_delete(state->mqttEventTopic);
Azure.IoT Build 0:5e72a75c31b8 558 STRING_delete(state->mqttMessageTopic);
Azure.IoT Build 0:5e72a75c31b8 559 STRING_delete(state->sasTokenSr);
Azure.IoT Build 0:5e72a75c31b8 560 STRING_delete(state->device_key);
Azure.IoT Build 0:5e72a75c31b8 561 STRING_delete(state->device_id);
Azure.IoT Build 0:5e72a75c31b8 562 free(state);
Azure.IoT Build 0:5e72a75c31b8 563 state = NULL;
Azure.IoT Build 0:5e72a75c31b8 564 }
Azure.IoT Build 0:5e72a75c31b8 565 else
Azure.IoT Build 0:5e72a75c31b8 566 {
Azure.IoT Build 0:5e72a75c31b8 567 /* Codes_SRS_IOTHUB_MQTT_TRANSPORT_07_008: [The hostname shall be constructed using the iothubname and iothubSuffix.] */
Azure.IoT Build 0:5e72a75c31b8 568 // TODO: need to strip the ssl or http or tls
Azure.IoT Build 0:5e72a75c31b8 569 char tempAddress[DEFAULT_TEMP_STRING_LEN];
Azure.IoT Build 0:5e72a75c31b8 570 (void)snprintf(tempAddress, DEFAULT_TEMP_STRING_LEN, "%s.%s", upperConfig->iotHubName, upperConfig->iotHubSuffix);
Azure.IoT Build 0:5e72a75c31b8 571 if ((state->hostAddress = STRING_construct(tempAddress)) == NULL)
Azure.IoT Build 0:5e72a75c31b8 572 {
Azure.IoT Build 0:5e72a75c31b8 573 STRING_delete(state->mqttEventTopic);
Azure.IoT Build 0:5e72a75c31b8 574 STRING_delete(state->mqttMessageTopic);
Azure.IoT Build 0:5e72a75c31b8 575 STRING_delete(state->sasTokenSr);
Azure.IoT Build 0:5e72a75c31b8 576 STRING_delete(state->device_key);
Azure.IoT Build 0:5e72a75c31b8 577 STRING_delete(state->device_id);
Azure.IoT Build 0:5e72a75c31b8 578 free(state);
Azure.IoT Build 0:5e72a75c31b8 579 state = NULL;
Azure.IoT Build 0:5e72a75c31b8 580 }
Azure.IoT Build 0:5e72a75c31b8 581 else if ((state->configPassedThroughUsername = buildConfigForUsername(upperConfig)) == NULL)
Azure.IoT Build 0:5e72a75c31b8 582 {
Azure.IoT Build 0:5e72a75c31b8 583 STRING_delete(state->hostAddress);
Azure.IoT Build 0:5e72a75c31b8 584 STRING_delete(state->mqttEventTopic);
Azure.IoT Build 0:5e72a75c31b8 585 STRING_delete(state->mqttMessageTopic);
Azure.IoT Build 0:5e72a75c31b8 586 STRING_delete(state->sasTokenSr);
Azure.IoT Build 0:5e72a75c31b8 587 STRING_delete(state->device_key);
Azure.IoT Build 0:5e72a75c31b8 588 STRING_delete(state->device_id);
Azure.IoT Build 0:5e72a75c31b8 589 free(state);
Azure.IoT Build 0:5e72a75c31b8 590 state = NULL;
Azure.IoT Build 0:5e72a75c31b8 591 }
Azure.IoT Build 0:5e72a75c31b8 592 else
Azure.IoT Build 0:5e72a75c31b8 593 {
Azure.IoT Build 0:5e72a75c31b8 594 /* 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.] */
Azure.IoT Build 0:5e72a75c31b8 595 DList_InitializeListHead(&(state->waitingForAck));
Azure.IoT Build 0:5e72a75c31b8 596 state->destroyCalled = false;
Azure.IoT Build 0:5e72a75c31b8 597 state->isRegistered = false;
Azure.IoT Build 0:5e72a75c31b8 598 state->subscribed = false;
Azure.IoT Build 0:5e72a75c31b8 599 state->connected = false;
Azure.IoT Build 0:5e72a75c31b8 600 state->receiveMessages = false;
Azure.IoT Build 0:5e72a75c31b8 601 state->packetId = 1;
Azure.IoT Build 0:5e72a75c31b8 602 state->llClientHandle = NULL;
Azure.IoT Build 0:5e72a75c31b8 603 state->xioTransport = NULL;
Azure.IoT Build 0:5e72a75c31b8 604 state->portNum = DEFAULT_PORT_NUMBER;
Azure.IoT Build 0:5e72a75c31b8 605 state->waitingToSend = waitingToSend;
Azure.IoT Build 0:5e72a75c31b8 606 state->currPacketState = CONNECT_TYPE;
Azure.IoT Build 0:5e72a75c31b8 607 state->keepAliveValue = DEFAULT_MQTT_KEEPALIVE;
Azure.IoT Build 0:5e72a75c31b8 608 }
Azure.IoT Build 0:5e72a75c31b8 609 }
Azure.IoT Build 0:5e72a75c31b8 610 }
Azure.IoT Build 0:5e72a75c31b8 611 return state;
Azure.IoT Build 0:5e72a75c31b8 612 }
Azure.IoT Build 0:5e72a75c31b8 613
Azure.IoT Build 0:5e72a75c31b8 614 extern TRANSPORT_LL_HANDLE IoTHubTransportMqtt_Create(const IOTHUBTRANSPORT_CONFIG* config)
Azure.IoT Build 0:5e72a75c31b8 615 {
Azure.IoT Build 0:5e72a75c31b8 616 PMQTTTRANSPORT_HANDLE_DATA result;
Azure.IoT Build 0:5e72a75c31b8 617 size_t deviceIdSize;
Azure.IoT Build 0:5e72a75c31b8 618
Azure.IoT Build 0:5e72a75c31b8 619 /* Codes_SRS_IOTHUB_MQTT_TRANSPORT_07_001: [If parameter config is NULL then IoTHubTransportMqtt_Create shall return NULL.] */
Azure.IoT Build 0:5e72a75c31b8 620 if (config == NULL)
Azure.IoT Build 0:5e72a75c31b8 621 {
Azure.IoT Build 0:5e72a75c31b8 622 LogError("Invalid Argument: Config Parameter is NULL.\r\n");
Azure.IoT Build 0:5e72a75c31b8 623 result = NULL;
Azure.IoT Build 0:5e72a75c31b8 624 }
Azure.IoT Build 0:5e72a75c31b8 625 /* Codes_SRS_IOTHUB_MQTT_TRANSPORT_07_002: [If the parameter config's variables upperConfig or waitingToSend are NULL then IoTHubTransportMqtt_Create shall return NULL.] */
Azure.IoT Build 0:5e72a75c31b8 626 /* 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.] */
Azure.IoT Build 0:5e72a75c31b8 627 else if (config->upperConfig == NULL || config->upperConfig->protocol == NULL || config->upperConfig->deviceId == NULL || config->upperConfig->deviceKey == NULL ||
Azure.IoT Build 0:5e72a75c31b8 628 config->upperConfig->iotHubName == NULL || config->upperConfig->iotHubSuffix == NULL)
Azure.IoT Build 0:5e72a75c31b8 629 {
Azure.IoT Build 0:5e72a75c31b8 630 LogError("Invalid Argument: upperConfig structure contains an invalid parameter\r\n");
Azure.IoT Build 0:5e72a75c31b8 631 result = NULL;
Azure.IoT Build 0:5e72a75c31b8 632 }
Azure.IoT Build 0:5e72a75c31b8 633 /* Codes_SRS_IOTHUB_MQTT_TRANSPORT_07_002: [If the parameter config's variables upperConfig or waitingToSend are NULL then IoTHubTransportMqtt_Create shall return NULL.] */
Azure.IoT Build 0:5e72a75c31b8 634 else if (config->waitingToSend == NULL)
Azure.IoT Build 0:5e72a75c31b8 635 {
Azure.IoT Build 0:5e72a75c31b8 636 LogError("Invalid Argument: waitingToSend is NULL)\r\n");
Azure.IoT Build 0:5e72a75c31b8 637 result = NULL;
Azure.IoT Build 0:5e72a75c31b8 638 }
Azure.IoT Build 0:5e72a75c31b8 639 /* 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.] */
Azure.IoT Build 0:5e72a75c31b8 640 else if ( ( (deviceIdSize = strlen(config->upperConfig->deviceId)) > 128U) || (deviceIdSize == 0) )
Azure.IoT Build 0:5e72a75c31b8 641 {
Azure.IoT Build 0:5e72a75c31b8 642 LogError("Invalid Argument: DeviceId is of an invalid size\r\n");
Azure.IoT Build 0:5e72a75c31b8 643 result = NULL;
Azure.IoT Build 0:5e72a75c31b8 644 }
Azure.IoT Build 0:5e72a75c31b8 645 /* 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.] */
Azure.IoT Build 0:5e72a75c31b8 646 else if (strlen(config->upperConfig->deviceKey) == 0)
Azure.IoT Build 0:5e72a75c31b8 647 {
Azure.IoT Build 0:5e72a75c31b8 648 LogError("Invalid Argument: deviceKey is empty\r\n");
Azure.IoT Build 0:5e72a75c31b8 649 result = NULL;
Azure.IoT Build 0:5e72a75c31b8 650 }
Azure.IoT Build 0:5e72a75c31b8 651 /* 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.] */
Azure.IoT Build 0:5e72a75c31b8 652 else if (strlen(config->upperConfig->iotHubName) == 0)
Azure.IoT Build 0:5e72a75c31b8 653 {
Azure.IoT Build 0:5e72a75c31b8 654 LogError("Invalid Argument: iotHubName is empty\r\n");
Azure.IoT Build 0:5e72a75c31b8 655 result = NULL;
Azure.IoT Build 0:5e72a75c31b8 656 }
Azure.IoT Build 0:5e72a75c31b8 657 else
Azure.IoT Build 0:5e72a75c31b8 658 {
Azure.IoT Build 0:5e72a75c31b8 659 result = InitializeTransportHandleData(config->upperConfig, config->waitingToSend);
Azure.IoT Build 0:5e72a75c31b8 660 if (result != NULL)
Azure.IoT Build 0:5e72a75c31b8 661 {
Azure.IoT Build 0:5e72a75c31b8 662 g_msgTickCounter = tickcounter_create();
Azure.IoT Build 0:5e72a75c31b8 663 }
Azure.IoT Build 0:5e72a75c31b8 664 }
Azure.IoT Build 0:5e72a75c31b8 665 /* Codes_SRS_IOTHUB_MQTT_TRANSPORT_07_009: [If any error is encountered then IoTHubTransportMqtt_Create shall return NULL.] */
Azure.IoT Build 0:5e72a75c31b8 666 /* Codes_SRS_IOTHUB_MQTT_TRANSPORT_07_011: [On Success IoTHubTransportMqtt_Create shall return a non-NULL value.] */
Azure.IoT Build 0:5e72a75c31b8 667 return result;
Azure.IoT Build 0:5e72a75c31b8 668 }
Azure.IoT Build 0:5e72a75c31b8 669
Azure.IoT Build 0:5e72a75c31b8 670 static void DisconnectFromClient(PMQTTTRANSPORT_HANDLE_DATA transportState)
Azure.IoT Build 0:5e72a75c31b8 671 {
Azure.IoT Build 0:5e72a75c31b8 672 /* Codes_SRS_IOTHUB_MQTT_TRANSPORT_07_013: [If the parameter subscribe is true then IoTHubTransportMqtt_Destroy shall call IoTHubTransportMqtt_Unsubscribe.] */
Azure.IoT Build 0:5e72a75c31b8 673 if (transportState->subscribed)
Azure.IoT Build 0:5e72a75c31b8 674 {
Azure.IoT Build 0:5e72a75c31b8 675 IoTHubTransportMqtt_Unsubscribe(transportState);
Azure.IoT Build 0:5e72a75c31b8 676 }
Azure.IoT Build 0:5e72a75c31b8 677
Azure.IoT Build 0:5e72a75c31b8 678 (void)mqtt_client_disconnect(transportState->mqttClient);
Azure.IoT Build 0:5e72a75c31b8 679 xio_destroy(transportState->xioTransport);
Azure.IoT Build 0:5e72a75c31b8 680
Azure.IoT Build 0:5e72a75c31b8 681 transportState->connected = false;
Azure.IoT Build 0:5e72a75c31b8 682 transportState->currPacketState = DISCONNECT_TYPE;
Azure.IoT Build 0:5e72a75c31b8 683 }
Azure.IoT Build 0:5e72a75c31b8 684
Azure.IoT Build 0:5e72a75c31b8 685 void IoTHubTransportMqtt_Destroy(TRANSPORT_LL_HANDLE handle)
Azure.IoT Build 0:5e72a75c31b8 686 {
Azure.IoT Build 0:5e72a75c31b8 687 /* Codes_SRS_IOTHUB_MQTT_TRANSPORT_07_012: [IoTHubTransportMqtt_Destroy shall do nothing if parameter handle is NULL.] */
Azure.IoT Build 0:5e72a75c31b8 688 PMQTTTRANSPORT_HANDLE_DATA transportState = (PMQTTTRANSPORT_HANDLE_DATA)handle;
Azure.IoT Build 0:5e72a75c31b8 689 if (transportState != NULL)
Azure.IoT Build 0:5e72a75c31b8 690 {
Azure.IoT Build 0:5e72a75c31b8 691 transportState->destroyCalled = true;
Azure.IoT Build 0:5e72a75c31b8 692
Azure.IoT Build 0:5e72a75c31b8 693 DisconnectFromClient(transportState);
Azure.IoT Build 0:5e72a75c31b8 694
Azure.IoT Build 0:5e72a75c31b8 695 //Empty the Waiting for Ack Messages.
Azure.IoT Build 0:5e72a75c31b8 696 while (!DList_IsListEmpty(&transportState->waitingForAck))
Azure.IoT Build 0:5e72a75c31b8 697 {
Azure.IoT Build 0:5e72a75c31b8 698 PDLIST_ENTRY currentEntry = DList_RemoveHeadList(&transportState->waitingForAck);
Azure.IoT Build 0:5e72a75c31b8 699 MQTT_MESSAGE_DETAILS_LIST* mqttMsgEntry = containingRecord(currentEntry, MQTT_MESSAGE_DETAILS_LIST, entry);
Azure.IoT Build 0:5e72a75c31b8 700 sendMsgComplete(mqttMsgEntry->iotHubMessageEntry, transportState, IOTHUB_BATCHSTATE_FAILED);
Azure.IoT Build 0:5e72a75c31b8 701 free(mqttMsgEntry);
Azure.IoT Build 0:5e72a75c31b8 702 }
Azure.IoT Build 0:5e72a75c31b8 703
Azure.IoT Build 0:5e72a75c31b8 704 /* Codes_SRS_IOTHUB_MQTT_TRANSPORT_07_014: [IoTHubTransportMqtt_Destroy shall free all the resources currently in use.] */
Azure.IoT Build 0:5e72a75c31b8 705 mqtt_client_deinit(transportState->mqttClient);
Azure.IoT Build 0:5e72a75c31b8 706 STRING_delete(transportState->mqttEventTopic);
Azure.IoT Build 0:5e72a75c31b8 707 STRING_delete(transportState->mqttMessageTopic);
Azure.IoT Build 0:5e72a75c31b8 708 STRING_delete(transportState->device_id);
Azure.IoT Build 0:5e72a75c31b8 709 STRING_delete(transportState->device_key);
Azure.IoT Build 0:5e72a75c31b8 710 STRING_delete(transportState->sasTokenSr);
Azure.IoT Build 0:5e72a75c31b8 711 STRING_delete(transportState->hostAddress);
Azure.IoT Build 0:5e72a75c31b8 712 STRING_delete(transportState->configPassedThroughUsername);
Azure.IoT Build 0:5e72a75c31b8 713 tickcounter_destroy(g_msgTickCounter);
Azure.IoT Build 0:5e72a75c31b8 714 free(transportState);
Azure.IoT Build 0:5e72a75c31b8 715 }
Azure.IoT Build 0:5e72a75c31b8 716 }
Azure.IoT Build 0:5e72a75c31b8 717
Azure.IoT Build 0:5e72a75c31b8 718 int IoTHubTransportMqtt_Subscribe(IOTHUB_DEVICE_HANDLE handle)
Azure.IoT Build 0:5e72a75c31b8 719 {
Azure.IoT Build 0:5e72a75c31b8 720 int result;
Azure.IoT Build 0:5e72a75c31b8 721 PMQTTTRANSPORT_HANDLE_DATA transportState = (PMQTTTRANSPORT_HANDLE_DATA)handle;
Azure.IoT Build 0:5e72a75c31b8 722 if (transportState == NULL)
Azure.IoT Build 0:5e72a75c31b8 723 {
Azure.IoT Build 0:5e72a75c31b8 724 /* Codes_SRS_IOTHUB_MQTT_TRANSPORT_07_015: [If parameter handle is NULL than IoTHubTransportMqtt_Subscribe shall return a non-zero value.] */
Azure.IoT Build 0:5e72a75c31b8 725 LogError("Invalid handle parameter. NULL.\r\n");
Azure.IoT Build 0:5e72a75c31b8 726 result = __LINE__;
Azure.IoT Build 0:5e72a75c31b8 727 }
Azure.IoT Build 0:5e72a75c31b8 728 else
Azure.IoT Build 0:5e72a75c31b8 729 {
Azure.IoT Build 0:5e72a75c31b8 730 /* 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.] */
Azure.IoT Build 0:5e72a75c31b8 731 transportState->receiveMessages = true;
Azure.IoT Build 0:5e72a75c31b8 732 /* 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.]*/
Azure.IoT Build 0:5e72a75c31b8 733 if (transportState->currPacketState != CONNACK_TYPE &&
Azure.IoT Build 0:5e72a75c31b8 734 transportState->currPacketState != CONNECT_TYPE &&
Azure.IoT Build 0:5e72a75c31b8 735 transportState->currPacketState != DISCONNECT_TYPE &&
Azure.IoT Build 0:5e72a75c31b8 736 transportState->currPacketState != PACKET_TYPE_ERROR)
Azure.IoT Build 0:5e72a75c31b8 737 {
Azure.IoT Build 0:5e72a75c31b8 738 transportState->currPacketState = SUBSCRIBE_TYPE;
Azure.IoT Build 0:5e72a75c31b8 739 }
Azure.IoT Build 0:5e72a75c31b8 740 result = 0;
Azure.IoT Build 0:5e72a75c31b8 741 }
Azure.IoT Build 0:5e72a75c31b8 742 return result;
Azure.IoT Build 0:5e72a75c31b8 743 }
Azure.IoT Build 0:5e72a75c31b8 744
Azure.IoT Build 0:5e72a75c31b8 745 void IoTHubTransportMqtt_Unsubscribe(IOTHUB_DEVICE_HANDLE handle)
Azure.IoT Build 0:5e72a75c31b8 746 {
Azure.IoT Build 0:5e72a75c31b8 747 PMQTTTRANSPORT_HANDLE_DATA transportState = (PMQTTTRANSPORT_HANDLE_DATA)handle;
Azure.IoT Build 0:5e72a75c31b8 748 /* Codes_SRS_IOTHUB_MQTT_TRANSPORT_07_019: [If parameter handle is NULL then IoTHubTransportMqtt_Unsubscribe shall do nothing.] */
Azure.IoT Build 0:5e72a75c31b8 749 if (transportState != NULL && transportState->subscribed)
Azure.IoT Build 0:5e72a75c31b8 750 {
Azure.IoT Build 0:5e72a75c31b8 751 /* Codes_SRS_IOTHUB_MQTT_TRANSPORT_07_020: [IoTHubTransportMqtt_Unsubscribe shall call mqtt_client_unsubscribe to unsubscribe the mqtt message topic.] */
Azure.IoT Build 0:5e72a75c31b8 752 const char* unsubscribe[] = { STRING_c_str(transportState->mqttMessageTopic) };
Azure.IoT Build 0:5e72a75c31b8 753 (void)mqtt_client_unsubscribe(transportState->mqttClient, transportState->packetId++, unsubscribe, 1);
Azure.IoT Build 0:5e72a75c31b8 754 transportState->subscribed = false;
Azure.IoT Build 0:5e72a75c31b8 755 transportState->receiveMessages = false;
Azure.IoT Build 0:5e72a75c31b8 756 }
Azure.IoT Build 0:5e72a75c31b8 757 else
Azure.IoT Build 0:5e72a75c31b8 758 {
Azure.IoT Build 0:5e72a75c31b8 759 LogError("Invalid argument to unsubscribe (NULL). \r\n");
Azure.IoT Build 0:5e72a75c31b8 760 }
Azure.IoT Build 0:5e72a75c31b8 761 }
Azure.IoT Build 0:5e72a75c31b8 762
Azure.IoT Build 0:5e72a75c31b8 763 extern void IoTHubTransportMqtt_DoWork(TRANSPORT_LL_HANDLE handle, IOTHUB_CLIENT_LL_HANDLE iotHubClientHandle)
Azure.IoT Build 0:5e72a75c31b8 764 {
Azure.IoT Build 0:5e72a75c31b8 765 /* Codes_SRS_IOTHUB_MQTT_TRANSPORT_07_026: [IoTHubTransportMqtt_DoWork shall do nothing if parameter handle and/or iotHubClientHandle is NULL.] */
Azure.IoT Build 0:5e72a75c31b8 766 PMQTTTRANSPORT_HANDLE_DATA transportState = (PMQTTTRANSPORT_HANDLE_DATA)handle;
Azure.IoT Build 0:5e72a75c31b8 767 if (transportState != NULL && iotHubClientHandle != NULL)
Azure.IoT Build 0:5e72a75c31b8 768 {
Azure.IoT Build 0:5e72a75c31b8 769 transportState->llClientHandle = iotHubClientHandle;
Azure.IoT Build 0:5e72a75c31b8 770
Azure.IoT Build 0:5e72a75c31b8 771 if (InitializeConnection(transportState) != 0)
Azure.IoT Build 0:5e72a75c31b8 772 {
Azure.IoT Build 0:5e72a75c31b8 773 // Don't want to flood the logs with failures here
Azure.IoT Build 0:5e72a75c31b8 774 }
Azure.IoT Build 0:5e72a75c31b8 775 else
Azure.IoT Build 0:5e72a75c31b8 776 {
Azure.IoT Build 0:5e72a75c31b8 777 if (transportState->currPacketState == CONNACK_TYPE || transportState->currPacketState == SUBSCRIBE_TYPE)
Azure.IoT Build 0:5e72a75c31b8 778 {
Azure.IoT Build 0:5e72a75c31b8 779 (void)SubscribeToMqttProtocol(transportState);
Azure.IoT Build 0:5e72a75c31b8 780 }
Azure.IoT Build 0:5e72a75c31b8 781 else if (transportState->currPacketState == SUBACK_TYPE)
Azure.IoT Build 0:5e72a75c31b8 782 {
Azure.IoT Build 0:5e72a75c31b8 783 // Publish can be called now
Azure.IoT Build 0:5e72a75c31b8 784 transportState->currPacketState = PUBLISH_TYPE;
Azure.IoT Build 0:5e72a75c31b8 785 }
Azure.IoT Build 0:5e72a75c31b8 786 else if (transportState->currPacketState == PUBLISH_TYPE)
Azure.IoT Build 0:5e72a75c31b8 787 {
Azure.IoT Build 0:5e72a75c31b8 788 PDLIST_ENTRY currentListEntry = transportState->waitingForAck.Flink;
Azure.IoT Build 0:5e72a75c31b8 789 while (currentListEntry != &transportState->waitingForAck)
Azure.IoT Build 0:5e72a75c31b8 790 {
Azure.IoT Build 0:5e72a75c31b8 791 MQTT_MESSAGE_DETAILS_LIST* mqttMsgEntry = containingRecord(currentListEntry, MQTT_MESSAGE_DETAILS_LIST, entry);
Azure.IoT Build 0:5e72a75c31b8 792 DLIST_ENTRY nextListEntry;
Azure.IoT Build 0:5e72a75c31b8 793 nextListEntry.Flink = currentListEntry->Flink;
Azure.IoT Build 0:5e72a75c31b8 794
Azure.IoT Build 0:5e72a75c31b8 795 uint64_t current_ms;
Azure.IoT Build 0:5e72a75c31b8 796 (void)tickcounter_get_current_ms(g_msgTickCounter, &current_ms);
Azure.IoT Build 0:5e72a75c31b8 797 /* 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.]*/
Azure.IoT Build 0:5e72a75c31b8 798 if (((current_ms - mqttMsgEntry->msgPublishTime) / 1000) > RESEND_TIMEOUT_VALUE_MIN)
Azure.IoT Build 0:5e72a75c31b8 799 {
Azure.IoT Build 0:5e72a75c31b8 800 /* Codes_SRS_IOTHUB_MQTT_TRANSPORT_07_034: [If IoTHubTransportMqtt_DoWork has resent the message two times then it shall fail the message] */
Azure.IoT Build 0:5e72a75c31b8 801 if (mqttMsgEntry->retryCount >= MAX_SEND_RECOUNT_LIMIT)
Azure.IoT Build 0:5e72a75c31b8 802 {
Azure.IoT Build 0:5e72a75c31b8 803 (void)DList_RemoveEntryList(currentListEntry);
Azure.IoT Build 0:5e72a75c31b8 804 sendMsgComplete(mqttMsgEntry->iotHubMessageEntry, transportState, IOTHUB_BATCHSTATE_FAILED);
Azure.IoT Build 0:5e72a75c31b8 805 free(mqttMsgEntry);
Azure.IoT Build 0:5e72a75c31b8 806 }
Azure.IoT Build 0:5e72a75c31b8 807 else
Azure.IoT Build 0:5e72a75c31b8 808 {
Azure.IoT Build 0:5e72a75c31b8 809 size_t messageLength;
Azure.IoT Build 0:5e72a75c31b8 810 const unsigned char* messagePayload = RetrieveMessagePayload(mqttMsgEntry->iotHubMessageEntry->messageHandle, &messageLength);
Azure.IoT Build 0:5e72a75c31b8 811 if (messageLength == 0 || messagePayload == NULL)
Azure.IoT Build 0:5e72a75c31b8 812 {
Azure.IoT Build 0:5e72a75c31b8 813 LogError("Failure from creating Message IoTHubMessage_GetData\r\n");
Azure.IoT Build 0:5e72a75c31b8 814 }
Azure.IoT Build 0:5e72a75c31b8 815 else
Azure.IoT Build 0:5e72a75c31b8 816 {
Azure.IoT Build 0:5e72a75c31b8 817 if (publishMqttMessage(transportState, mqttMsgEntry, messagePayload, messageLength) != 0)
Azure.IoT Build 0:5e72a75c31b8 818 {
Azure.IoT Build 0:5e72a75c31b8 819 (void)DList_RemoveEntryList(currentListEntry);
Azure.IoT Build 0:5e72a75c31b8 820 sendMsgComplete(mqttMsgEntry->iotHubMessageEntry, transportState, IOTHUB_BATCHSTATE_FAILED);
Azure.IoT Build 0:5e72a75c31b8 821 free(mqttMsgEntry);
Azure.IoT Build 0:5e72a75c31b8 822 }
Azure.IoT Build 0:5e72a75c31b8 823 }
Azure.IoT Build 0:5e72a75c31b8 824 }
Azure.IoT Build 0:5e72a75c31b8 825 }
Azure.IoT Build 0:5e72a75c31b8 826 currentListEntry = nextListEntry.Flink;
Azure.IoT Build 0:5e72a75c31b8 827 }
Azure.IoT Build 0:5e72a75c31b8 828
Azure.IoT Build 0:5e72a75c31b8 829 currentListEntry = transportState->waitingToSend->Flink;
Azure.IoT Build 0:5e72a75c31b8 830 /* Codes_SRS_IOTHUB_MQTT_TRANSPORT_07_027: [IoTHubTransportMqtt_DoWork shall inspect the “waitingToSend” DLIST passed in config structure.] */
Azure.IoT Build 0:5e72a75c31b8 831 while (currentListEntry != transportState->waitingToSend)
Azure.IoT Build 0:5e72a75c31b8 832 {
Azure.IoT Build 0:5e72a75c31b8 833 IOTHUB_MESSAGE_LIST* iothubMsgList = containingRecord(currentListEntry, IOTHUB_MESSAGE_LIST, entry);
Azure.IoT Build 0:5e72a75c31b8 834 DLIST_ENTRY savedFromCurrentListEntry;
Azure.IoT Build 0:5e72a75c31b8 835 savedFromCurrentListEntry.Flink = currentListEntry->Flink;
Azure.IoT Build 0:5e72a75c31b8 836
Azure.IoT Build 0:5e72a75c31b8 837 /* Codes_SRS_IOTHUB_MQTT_TRANSPORT_07_027: [IoTHubTransportMqtt_DoWork shall inspect the “waitingToSend” DLIST passed in config structure.] */
Azure.IoT Build 0:5e72a75c31b8 838 size_t messageLength;
Azure.IoT Build 0:5e72a75c31b8 839 const unsigned char* messagePayload = RetrieveMessagePayload(iothubMsgList->messageHandle, &messageLength);
Azure.IoT Build 0:5e72a75c31b8 840 if (messageLength == 0 || messagePayload == NULL)
Azure.IoT Build 0:5e72a75c31b8 841 {
Azure.IoT Build 0:5e72a75c31b8 842 LogError("Failure result from IoTHubMessage_GetData\r\n");
Azure.IoT Build 0:5e72a75c31b8 843 }
Azure.IoT Build 0:5e72a75c31b8 844 else
Azure.IoT Build 0:5e72a75c31b8 845 {
Azure.IoT Build 0:5e72a75c31b8 846 /* 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.] */
Azure.IoT Build 0:5e72a75c31b8 847 MQTT_MESSAGE_DETAILS_LIST* mqttMsgEntry = (MQTT_MESSAGE_DETAILS_LIST*)malloc(sizeof(MQTT_MESSAGE_DETAILS_LIST));
Azure.IoT Build 0:5e72a75c31b8 848 if (mqttMsgEntry == NULL)
Azure.IoT Build 0:5e72a75c31b8 849 {
Azure.IoT Build 0:5e72a75c31b8 850 LogError("Allocation Error: Failure allocating MQTT Message Detail List.\r\n");
Azure.IoT Build 0:5e72a75c31b8 851 }
Azure.IoT Build 0:5e72a75c31b8 852 else
Azure.IoT Build 0:5e72a75c31b8 853 {
Azure.IoT Build 0:5e72a75c31b8 854 mqttMsgEntry->retryCount = 0;
Azure.IoT Build 0:5e72a75c31b8 855 mqttMsgEntry->msgPacketId = transportState->packetId;
Azure.IoT Build 0:5e72a75c31b8 856 mqttMsgEntry->iotHubMessageEntry = iothubMsgList;
Azure.IoT Build 0:5e72a75c31b8 857
Azure.IoT Build 0:5e72a75c31b8 858 if (publishMqttMessage(transportState, mqttMsgEntry, messagePayload, messageLength) != 0)
Azure.IoT Build 0:5e72a75c31b8 859 {
Azure.IoT Build 0:5e72a75c31b8 860 (void)(DList_RemoveEntryList(currentListEntry));
Azure.IoT Build 0:5e72a75c31b8 861 sendMsgComplete(iothubMsgList, transportState, IOTHUB_BATCHSTATE_FAILED);
Azure.IoT Build 0:5e72a75c31b8 862 free(mqttMsgEntry);
Azure.IoT Build 0:5e72a75c31b8 863 }
Azure.IoT Build 0:5e72a75c31b8 864 else
Azure.IoT Build 0:5e72a75c31b8 865 {
Azure.IoT Build 0:5e72a75c31b8 866 (void)(DList_RemoveEntryList(currentListEntry));
Azure.IoT Build 0:5e72a75c31b8 867 DList_InsertTailList(&(transportState->waitingForAck), &(mqttMsgEntry->entry));
Azure.IoT Build 0:5e72a75c31b8 868 }
Azure.IoT Build 0:5e72a75c31b8 869 }
Azure.IoT Build 0:5e72a75c31b8 870 }
Azure.IoT Build 0:5e72a75c31b8 871 currentListEntry = savedFromCurrentListEntry.Flink;
Azure.IoT Build 0:5e72a75c31b8 872 }
Azure.IoT Build 0:5e72a75c31b8 873 }
Azure.IoT Build 0:5e72a75c31b8 874 /* Codes_SRS_IOTHUB_MQTT_TRANSPORT_07_030: [IoTHubTransportMqtt_DoWork shall call mqtt_client_dowork everytime it is called if it is connected.] */
Azure.IoT Build 0:5e72a75c31b8 875 mqtt_client_dowork(transportState->mqttClient);
Azure.IoT Build 0:5e72a75c31b8 876 }
Azure.IoT Build 0:5e72a75c31b8 877 }
Azure.IoT Build 0:5e72a75c31b8 878 }
Azure.IoT Build 0:5e72a75c31b8 879
Azure.IoT Build 0:5e72a75c31b8 880 IOTHUB_CLIENT_RESULT IoTHubTransportMqtt_GetSendStatus(IOTHUB_DEVICE_HANDLE handle, IOTHUB_CLIENT_STATUS *iotHubClientStatus)
Azure.IoT Build 0:5e72a75c31b8 881 {
Azure.IoT Build 0:5e72a75c31b8 882 IOTHUB_CLIENT_RESULT result;
Azure.IoT Build 0:5e72a75c31b8 883
Azure.IoT Build 0:5e72a75c31b8 884 if (handle == NULL || iotHubClientStatus == NULL)
Azure.IoT Build 0:5e72a75c31b8 885 {
Azure.IoT Build 0:5e72a75c31b8 886 /* Codes_SRS_IOTHUB_MQTT_TRANSPORT_07_023: [IoTHubTransportMqtt_GetSendStatus shall return IOTHUB_CLIENT_INVALID_ARG if called with NULL parameter.] */
Azure.IoT Build 0:5e72a75c31b8 887 LogError("invalid arument. \r\n");
Azure.IoT Build 0:5e72a75c31b8 888 result = IOTHUB_CLIENT_INVALID_ARG;
Azure.IoT Build 0:5e72a75c31b8 889 }
Azure.IoT Build 0:5e72a75c31b8 890 else
Azure.IoT Build 0:5e72a75c31b8 891 {
Azure.IoT Build 0:5e72a75c31b8 892 MQTTTRANSPORT_HANDLE_DATA* handleData = (MQTTTRANSPORT_HANDLE_DATA*)handle;
Azure.IoT Build 0:5e72a75c31b8 893 if (!DList_IsListEmpty(handleData->waitingToSend) || !DList_IsListEmpty(&(handleData->waitingForAck)))
Azure.IoT Build 0:5e72a75c31b8 894 {
Azure.IoT Build 0:5e72a75c31b8 895 /* 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.] */
Azure.IoT Build 0:5e72a75c31b8 896 *iotHubClientStatus = IOTHUB_CLIENT_SEND_STATUS_BUSY;
Azure.IoT Build 0:5e72a75c31b8 897 }
Azure.IoT Build 0:5e72a75c31b8 898 else
Azure.IoT Build 0:5e72a75c31b8 899 {
Azure.IoT Build 0:5e72a75c31b8 900 /* 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.] */
Azure.IoT Build 0:5e72a75c31b8 901 *iotHubClientStatus = IOTHUB_CLIENT_SEND_STATUS_IDLE;
Azure.IoT Build 0:5e72a75c31b8 902 }
Azure.IoT Build 0:5e72a75c31b8 903 result = IOTHUB_CLIENT_OK;
Azure.IoT Build 0:5e72a75c31b8 904 }
Azure.IoT Build 0:5e72a75c31b8 905 return result;
Azure.IoT Build 0:5e72a75c31b8 906 }
Azure.IoT Build 0:5e72a75c31b8 907
Azure.IoT Build 0:5e72a75c31b8 908 IOTHUB_CLIENT_RESULT IoTHubTransportMqtt_SetOption(TRANSPORT_LL_HANDLE handle, const char* option, const void* value)
Azure.IoT Build 0:5e72a75c31b8 909 {
Azure.IoT Build 0:5e72a75c31b8 910 /* Codes_SRS_IOTHUB_MQTT_TRANSPORT_07_021: [If any parameter is NULL then IoTHubTransportMqtt_SetOption shall return IOTHUB_CLIENT_INVALID_ARG.] */
Azure.IoT Build 0:5e72a75c31b8 911 IOTHUB_CLIENT_RESULT result;
Azure.IoT Build 0:5e72a75c31b8 912 if (
Azure.IoT Build 0:5e72a75c31b8 913 (handle == NULL) ||
Azure.IoT Build 0:5e72a75c31b8 914 (option == NULL) ||
Azure.IoT Build 0:5e72a75c31b8 915 (value == NULL)
Azure.IoT Build 0:5e72a75c31b8 916 )
Azure.IoT Build 0:5e72a75c31b8 917 {
Azure.IoT Build 0:5e72a75c31b8 918 result = IOTHUB_CLIENT_INVALID_ARG;
Azure.IoT Build 0:5e72a75c31b8 919 LogError("invalid parameter (NULL) passed to clientTransportAMQP_SetOption\r\n");
Azure.IoT Build 0:5e72a75c31b8 920 }
Azure.IoT Build 0:5e72a75c31b8 921 else
Azure.IoT Build 0:5e72a75c31b8 922 {
Azure.IoT Build 0:5e72a75c31b8 923 MQTTTRANSPORT_HANDLE_DATA* transportState = (MQTTTRANSPORT_HANDLE_DATA*)handle;
Azure.IoT Build 0:5e72a75c31b8 924 /* 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.] */
Azure.IoT Build 0:5e72a75c31b8 925 if (strcmp("logtrace", option) == 0)
Azure.IoT Build 0:5e72a75c31b8 926 {
Azure.IoT Build 0:5e72a75c31b8 927 bool* traceVal = (bool*)value;
Azure.IoT Build 0:5e72a75c31b8 928 mqtt_client_set_trace(transportState->mqttClient, *traceVal, *traceVal);
Azure.IoT Build 0:5e72a75c31b8 929 result = IOTHUB_CLIENT_OK;
Azure.IoT Build 0:5e72a75c31b8 930 }
Azure.IoT Build 0:5e72a75c31b8 931 else if (strcmp("keepalive", option) == 0)
Azure.IoT Build 0:5e72a75c31b8 932 {
Azure.IoT Build 0:5e72a75c31b8 933 /* 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.] */
Azure.IoT Build 0:5e72a75c31b8 934 int* keepAliveOption = (int*)value;
Azure.IoT Build 0:5e72a75c31b8 935 /* 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.] */
Azure.IoT Build 0:5e72a75c31b8 936 if (*keepAliveOption != transportState->keepAliveValue)
Azure.IoT Build 0:5e72a75c31b8 937 {
Azure.IoT Build 0:5e72a75c31b8 938 transportState->keepAliveValue = *keepAliveOption;
Azure.IoT Build 0:5e72a75c31b8 939 if (transportState->connected)
Azure.IoT Build 0:5e72a75c31b8 940 {
Azure.IoT Build 0:5e72a75c31b8 941 /* 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.] */
Azure.IoT Build 0:5e72a75c31b8 942 DisconnectFromClient(transportState);
Azure.IoT Build 0:5e72a75c31b8 943 }
Azure.IoT Build 0:5e72a75c31b8 944 }
Azure.IoT Build 0:5e72a75c31b8 945 result = IOTHUB_CLIENT_OK;
Azure.IoT Build 0:5e72a75c31b8 946 }
Azure.IoT Build 0:5e72a75c31b8 947 else
Azure.IoT Build 0:5e72a75c31b8 948 {
Azure.IoT Build 0:5e72a75c31b8 949 /* 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.] */
Azure.IoT Build 0:5e72a75c31b8 950 if (GetTransportProviderIfNecessary(transportState) == 0)
Azure.IoT Build 0:5e72a75c31b8 951 {
Azure.IoT Build 0:5e72a75c31b8 952 if (xio_setoption(transportState->xioTransport, option, value) == 0)
Azure.IoT Build 0:5e72a75c31b8 953 {
Azure.IoT Build 0:5e72a75c31b8 954 result = IOTHUB_CLIENT_OK;
Azure.IoT Build 0:5e72a75c31b8 955 }
Azure.IoT Build 0:5e72a75c31b8 956 else
Azure.IoT Build 0:5e72a75c31b8 957 {
Azure.IoT Build 0:5e72a75c31b8 958 /* Codes_SRS_IOTHUB_MQTT_TRANSPORT_07_132: [IoTHubTransportMqtt_SetOption shall return IOTHUB_CLIENT_INVALID_ARG xio_setoption fails] */
Azure.IoT Build 0:5e72a75c31b8 959 result = IOTHUB_CLIENT_INVALID_ARG;
Azure.IoT Build 0:5e72a75c31b8 960 }
Azure.IoT Build 0:5e72a75c31b8 961 }
Azure.IoT Build 0:5e72a75c31b8 962 else
Azure.IoT Build 0:5e72a75c31b8 963 {
Azure.IoT Build 0:5e72a75c31b8 964 result = IOTHUB_CLIENT_ERROR;
Azure.IoT Build 0:5e72a75c31b8 965 }
Azure.IoT Build 0:5e72a75c31b8 966 }
Azure.IoT Build 0:5e72a75c31b8 967 }
Azure.IoT Build 0:5e72a75c31b8 968 return result;
Azure.IoT Build 0:5e72a75c31b8 969 }
Azure.IoT Build 0:5e72a75c31b8 970
Azure.IoT Build 0:5e72a75c31b8 971 IOTHUB_DEVICE_HANDLE IoTHubTransportMqtt_Register(TRANSPORT_LL_HANDLE handle, const char* deviceId, const char* deviceKey, IOTHUB_CLIENT_LL_HANDLE iotHubClientHandle, PDLIST_ENTRY waitingToSend)
Azure.IoT Build 0:5e72a75c31b8 972 {
Azure.IoT Build 0:5e72a75c31b8 973 IOTHUB_DEVICE_HANDLE result;
Azure.IoT Build 0:5e72a75c31b8 974 // Codes_SRS_IOTHUB_MQTT_TRANSPORT_17_001: [ IoTHubTransportMqtt_Register shall return NULL if the TRANSPORT_LL_HANDLE is NULL.]
Azure.IoT Build 0:5e72a75c31b8 975 // Codes_SRS_IOTHUB_MQTT_TRANSPORT_17_002: [ IoTHubTransportMqtt_Register shall return NULL if deviceId, deviceKey or waitingToSend are NULL.]
Azure.IoT Build 0:5e72a75c31b8 976 if ((handle == NULL) || (deviceId == NULL) || (deviceKey == NULL) || (waitingToSend == NULL))
Azure.IoT Build 0:5e72a75c31b8 977 {
Azure.IoT Build 0:5e72a75c31b8 978 result = NULL;
Azure.IoT Build 0:5e72a75c31b8 979 }
Azure.IoT Build 0:5e72a75c31b8 980 else
Azure.IoT Build 0:5e72a75c31b8 981 {
Azure.IoT Build 0:5e72a75c31b8 982 MQTTTRANSPORT_HANDLE_DATA* transportState = (MQTTTRANSPORT_HANDLE_DATA*)handle;
Azure.IoT Build 0:5e72a75c31b8 983
Azure.IoT Build 0:5e72a75c31b8 984 // 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.]
Azure.IoT Build 0:5e72a75c31b8 985 if (strcmp(STRING_c_str(transportState->device_id), deviceId) != 0)
Azure.IoT Build 0:5e72a75c31b8 986 {
Azure.IoT Build 0:5e72a75c31b8 987 result = NULL;
Azure.IoT Build 0:5e72a75c31b8 988 }
Azure.IoT Build 0:5e72a75c31b8 989 else if (strcmp(STRING_c_str(transportState->device_key), deviceKey) != 0)
Azure.IoT Build 0:5e72a75c31b8 990 {
Azure.IoT Build 0:5e72a75c31b8 991 result = NULL;
Azure.IoT Build 0:5e72a75c31b8 992 }
Azure.IoT Build 0:5e72a75c31b8 993 else
Azure.IoT Build 0:5e72a75c31b8 994 {
Azure.IoT Build 0:5e72a75c31b8 995 if (transportState->isRegistered == true)
Azure.IoT Build 0:5e72a75c31b8 996 {
Azure.IoT Build 0:5e72a75c31b8 997 LogError("Transport already has device registered by id: [%s]", deviceId);
Azure.IoT Build 0:5e72a75c31b8 998 result = NULL;
Azure.IoT Build 0:5e72a75c31b8 999 }
Azure.IoT Build 0:5e72a75c31b8 1000 else
Azure.IoT Build 0:5e72a75c31b8 1001 {
Azure.IoT Build 0:5e72a75c31b8 1002 transportState->isRegistered = true;
Azure.IoT Build 0:5e72a75c31b8 1003 // Codes_SRS_IOTHUB_MQTT_TRANSPORT_17_004: [ IoTHubTransportMqtt_Register shall return the TRANSPORT_LL_HANDLE as the IOTHUB_DEVICE_HANDLE. ]
Azure.IoT Build 0:5e72a75c31b8 1004 result = (IOTHUB_DEVICE_HANDLE)handle;
Azure.IoT Build 0:5e72a75c31b8 1005 }
Azure.IoT Build 0:5e72a75c31b8 1006
Azure.IoT Build 0:5e72a75c31b8 1007 }
Azure.IoT Build 0:5e72a75c31b8 1008 }
Azure.IoT Build 0:5e72a75c31b8 1009
Azure.IoT Build 0:5e72a75c31b8 1010 return result;
Azure.IoT Build 0:5e72a75c31b8 1011 }
Azure.IoT Build 0:5e72a75c31b8 1012
Azure.IoT Build 0:5e72a75c31b8 1013 // Codes_SRS_IOTHUB_MQTT_TRANSPORT_17_005: [ IoTHubTransportMqtt_Unregister shall return. ]
Azure.IoT Build 0:5e72a75c31b8 1014 void IoTHubTransportMqtt_Unregister(IOTHUB_DEVICE_HANDLE deviceHandle)
Azure.IoT Build 0:5e72a75c31b8 1015 {
Azure.IoT Build 0:5e72a75c31b8 1016 if (deviceHandle != NULL)
Azure.IoT Build 0:5e72a75c31b8 1017 {
Azure.IoT Build 0:5e72a75c31b8 1018 MQTTTRANSPORT_HANDLE_DATA* transportState = (MQTTTRANSPORT_HANDLE_DATA*)deviceHandle;
Azure.IoT Build 0:5e72a75c31b8 1019
Azure.IoT Build 0:5e72a75c31b8 1020 transportState->isRegistered = false;
Azure.IoT Build 0:5e72a75c31b8 1021 }
Azure.IoT Build 0:5e72a75c31b8 1022 }
Azure.IoT Build 0:5e72a75c31b8 1023
Azure.IoT Build 0:5e72a75c31b8 1024 TRANSPORT_PROVIDER myfunc = {
Azure.IoT Build 0:5e72a75c31b8 1025 IoTHubTransportMqtt_SetOption,
Azure.IoT Build 0:5e72a75c31b8 1026 IoTHubTransportMqtt_Create,
Azure.IoT Build 0:5e72a75c31b8 1027 IoTHubTransportMqtt_Destroy,
Azure.IoT Build 0:5e72a75c31b8 1028 IoTHubTransportMqtt_Register,
Azure.IoT Build 0:5e72a75c31b8 1029 IoTHubTransportMqtt_Unregister,
Azure.IoT Build 0:5e72a75c31b8 1030 IoTHubTransportMqtt_Subscribe,
Azure.IoT Build 0:5e72a75c31b8 1031 IoTHubTransportMqtt_Unsubscribe,
Azure.IoT Build 0:5e72a75c31b8 1032 IoTHubTransportMqtt_DoWork,
Azure.IoT Build 0:5e72a75c31b8 1033 IoTHubTransportMqtt_GetSendStatus
Azure.IoT Build 0:5e72a75c31b8 1034 };
Azure.IoT Build 0:5e72a75c31b8 1035
Azure.IoT Build 0:5e72a75c31b8 1036 /* 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 1037 IoTHubTransport_Destroy = IoTHubTransportMqtt_Destroy
Azure.IoT Build 0:5e72a75c31b8 1038 IoTHubTransport_Subscribe = IoTHubTransportMqtt_Subscribe
Azure.IoT Build 0:5e72a75c31b8 1039 IoTHubTransport_Unsubscribe = IoTHubTransportMqtt_Unsubscribe
Azure.IoT Build 0:5e72a75c31b8 1040 IoTHubTransport_DoWork = IoTHubTransportMqtt_DoWork
Azure.IoT Build 0:5e72a75c31b8 1041 IoTHubTransport_SetOption = IoTHubTransportMqtt_SetOption] */
Azure.IoT Build 0:5e72a75c31b8 1042 extern const void* MQTT_Protocol(void)
Azure.IoT Build 0:5e72a75c31b8 1043 {
Azure.IoT Build 0:5e72a75c31b8 1044 return &myfunc;
Azure.IoT Build 0:5e72a75c31b8 1045 }