Update preview to main

.github/CODEOWNERS

@@ -1,3 +1,3 @@
 # Track1 .NET Azure IoT Hub and DPS SDKs
 
-*	@drwill-ms @timtay-microsoft @abhipsaMisra @azabbasi @jamdavi @andyk-ms @brycewang-microsoft
+*	@drwill-ms @timtay-microsoft @abhipsaMisra @azabbasi @andyk-ms @brycewang-microsoft

iothub/device/src/DeviceClient.cs

@@ -319,7 +319,7 @@ public void SetRetryPolicy(IRetryPolicy retryPolicy)
         /// </summary>
         /// <remarks>
         /// You cannot reject or abandon messages over MQTT protocol.
-        /// For more details, see https://docs.microsoft.com/azure/iot-hub/iot-hub-devguide-messages-c2d#the-cloud-to-device-message-life-cycle.
+        /// For more details, see https://docs.microsoft.com/en-us/azure/iot-hub/iot-hub-devguide-messages-c2d#the-cloud-to-device-message-life-cycle.
         /// </remarks>
         /// <param name="cancellationToken">A cancellation token to cancel the operation.</param>
         /// <exception cref="IotHubCommunicationException">Thrown when the operation has been canceled. The inner exception will be <see cref="OperationCanceledException"/>.</exception>
@@ -333,7 +333,7 @@ public void SetRetryPolicy(IRetryPolicy retryPolicy)
         /// </summary>
         /// <remarks>
         /// You cannot reject or abandon messages over MQTT protocol.
-        /// For more details, see https://docs.microsoft.com/azure/iot-hub/iot-hub-devguide-messages-c2d#the-cloud-to-device-message-life-cycle.
+        /// For more details, see https://docs.microsoft.com/en-us/azure/iot-hub/iot-hub-devguide-messages-c2d#the-cloud-to-device-message-life-cycle.
         /// </remarks>
         /// <returns>The received message or null if there was no message until the specified time has elapsed.</returns>
         public Task<Message> ReceiveAsync(TimeSpan timeout) => InternalClient.ReceiveAsync(timeout);
@@ -383,7 +383,7 @@ public Task SetReceiveMessageHandlerAsync(ReceiveMessageCallback messageHandler,
         /// </summary>
         /// <remarks>
         /// You cannot abandon a message over MQTT protocol.
-        /// For more details, see https://docs.microsoft.com/azure/iot-hub/iot-hub-devguide-messages-c2d#the-cloud-to-device-message-life-cycle.
+        /// For more details, see https://docs.microsoft.com/en-us/azure/iot-hub/iot-hub-devguide-messages-c2d#the-cloud-to-device-message-life-cycle.
         /// </remarks>
         /// <param name="lockToken">The message lockToken.</param>
         public Task AbandonAsync(string lockToken) => InternalClient.AbandonAsync(lockToken);
@@ -393,7 +393,7 @@ public Task SetReceiveMessageHandlerAsync(ReceiveMessageCallback messageHandler,
         /// </summary>
         /// <remarks>
         /// You cannot abandon a message over MQTT protocol.
-        /// For more details, see https://docs.microsoft.com/azure/iot-hub/iot-hub-devguide-messages-c2d#the-cloud-to-device-message-life-cycle.
+        /// For more details, see https://docs.microsoft.com/en-us/azure/iot-hub/iot-hub-devguide-messages-c2d#the-cloud-to-device-message-life-cycle.
         /// </remarks>
         /// <param name="lockToken">The message lockToken.</param>
         /// <param name="cancellationToken">A cancellation token to cancel the operation.</param>
@@ -405,7 +405,7 @@ public Task SetReceiveMessageHandlerAsync(ReceiveMessageCallback messageHandler,
         /// </summary>
         /// <remarks>
         /// You cannot abandon a message over MQTT protocol.
-        /// For more details, see https://docs.microsoft.com/azure/iot-hub/iot-hub-devguide-messages-c2d#the-cloud-to-device-message-life-cycle.
+        /// For more details, see https://docs.microsoft.com/en-us/azure/iot-hub/iot-hub-devguide-messages-c2d#the-cloud-to-device-message-life-cycle.
         /// </remarks>
         /// <param name="message">The message to abandon.</param>
         public Task AbandonAsync(Message message) => InternalClient.AbandonAsync(message);
@@ -415,7 +415,7 @@ public Task SetReceiveMessageHandlerAsync(ReceiveMessageCallback messageHandler,
         /// </summary>
         /// <remarks>
         /// You cannot abandon a message over MQTT protocol.
-        /// For more details, see https://docs.microsoft.com/azure/iot-hub/iot-hub-devguide-messages-c2d#the-cloud-to-device-message-life-cycle.
+        /// For more details, see https://docs.microsoft.com/en-us/azure/iot-hub/iot-hub-devguide-messages-c2d#the-cloud-to-device-message-life-cycle.
         /// </remarks>
         /// <param name="message">The message to abandon.</param>
         /// <param name="cancellationToken">A cancellation token to cancel the operation.</param>
@@ -427,7 +427,7 @@ public Task SetReceiveMessageHandlerAsync(ReceiveMessageCallback messageHandler,
         /// </summary>
         /// <remarks>
         /// You cannot reject a message over MQTT protocol.
-        /// For more details, see https://docs.microsoft.com/azure/iot-hub/iot-hub-devguide-messages-c2d#the-cloud-to-device-message-life-cycle.
+        /// For more details, see https://docs.microsoft.com/en-us/azure/iot-hub/iot-hub-devguide-messages-c2d#the-cloud-to-device-message-life-cycle.
         /// </remarks>
         /// <param name="lockToken">The message lockToken.</param>
         public Task RejectAsync(string lockToken) => InternalClient.RejectAsync(lockToken);
@@ -449,7 +449,7 @@ public Task SetReceiveMessageHandlerAsync(ReceiveMessageCallback messageHandler,
         /// </summary>
         /// <remarks>
         /// You cannot reject a message over MQTT protocol.
-        /// For more details, see https://docs.microsoft.com/azure/iot-hub/iot-hub-devguide-messages-c2d#the-cloud-to-device-message-life-cycle.
+        /// For more details, see https://docs.microsoft.com/en-us/azure/iot-hub/iot-hub-devguide-messages-c2d#the-cloud-to-device-message-life-cycle.
         /// </remarks>
         /// <param name="message">The message.</param>
         public Task RejectAsync(Message message) => InternalClient.RejectAsync(message);
@@ -459,7 +459,7 @@ public Task SetReceiveMessageHandlerAsync(ReceiveMessageCallback messageHandler,
         /// </summary>
         /// <remarks>
         /// You cannot reject a message over MQTT protocol.
-        /// For more details, see https://docs.microsoft.com/azure/iot-hub/iot-hub-devguide-messages-c2d#the-cloud-to-device-message-life-cycle.
+        /// For more details, see https://docs.microsoft.com/en-us/azure/iot-hub/iot-hub-devguide-messages-c2d#the-cloud-to-device-message-life-cycle.
         /// </remarks>
         /// <param name="message">The message to reject.</param>
         /// <param name="cancellationToken">A cancellation token to cancel the operation.</param>

iothub/device/src/Transport/Mqtt/MqttTransportHandler.cs

@@ -33,7 +33,9 @@
 using Newtonsoft.Json;
 
 #if NET5_0
+
 using TaskCompletionSource = System.Threading.Tasks.TaskCompletionSource;
+
 #else
 using TaskCompletionSource = Microsoft.Azure.Devices.Shared.TaskCompletionSource;
 #endif
@@ -112,7 +114,8 @@ internal sealed class MqttTransportHandler : TransportHandler, IMqttIotHubEventH
         private readonly Func<IPAddress[], int, Task<IChannel>> _channelFactory;
         private readonly Queue<string> _completionQueue;
         private readonly MqttIotHubAdapterFactory _mqttIotHubAdapterFactory;
-        private readonly QualityOfService _qos;
+        private readonly QualityOfService _qosSendPacketToService;
+        private readonly QualityOfService _qosReceivePacketFromService;
         private readonly bool _retainMessagesAcrossSessions;
         private readonly object _syncRoot = new object();
         private readonly RetryPolicy _closeRetryPolicy;
@@ -173,7 +176,8 @@ internal MqttTransportHandler(
             _deviceboundMessageFilter = string.Format(CultureInfo.InvariantCulture, DeviceBoundMessagesTopicFilter, iotHubConnectionString.DeviceId);
             _deviceboundMessagePrefix = string.Format(CultureInfo.InvariantCulture, DeviceBoundMessagesTopicPrefix, iotHubConnectionString.DeviceId);
 
-            _qos = settings.PublishToServerQoS;
+            _qosSendPacketToService = settings.PublishToServerQoS;
+            _qosReceivePacketFromService = settings.ReceivingQoS;
 
             // If the CleanSession flag is set to false, C2D messages will be retained across device sessions, i.e. the device
             // will receive the C2D messages that were sent to it while it was disconnected.
@@ -299,7 +303,7 @@ public override async Task<Message> ReceiveAsync(CancellationToken cancellationT
                     }
 
                     await WaitUntilC2dMessageArrivesAsync(cancellationToken).ConfigureAwait(false);
-                    return ProcessMessage();
+                    return ProcessC2dMessage();
                 }
                 finally
                 {
@@ -338,7 +342,7 @@ public override async Task<Message> ReceiveAsync(TimeoutHelper timeoutHelper)
                 using var cts = new CancellationTokenSource(timeout);
 
                 await WaitUntilC2dMessageArrivesAsync(cts.Token).ConfigureAwait(false);
-                return ProcessMessage();
+                return ProcessC2dMessage();
             }
             finally
             {
@@ -347,20 +351,20 @@ public override async Task<Message> ReceiveAsync(TimeoutHelper timeoutHelper)
             }
         }
 
-        private Message ProcessMessage()
+        private Message ProcessC2dMessage()
         {
             Message message = null;
 
             try
             {
                 if (Logging.IsEnabled)
-                    Logging.Enter(this, message, $"Will begin processing received C2D message, queue size={_messageQueue.Count}", nameof(ProcessMessage));
+                    Logging.Enter(this, message, $"Will begin processing received C2D message, queue size={_messageQueue.Count}", nameof(ProcessC2dMessage));
 
                 lock (_syncRoot)
                 {
                     if (_messageQueue.TryDequeue(out message))
                     {
-                        if (_qos == QualityOfService.AtLeastOnce)
+                        if (_qosReceivePacketFromService == QualityOfService.AtLeastOnce)
                         {
                             _completionQueue.Enqueue(message.LockToken);
                         }
@@ -374,7 +378,7 @@ private Message ProcessMessage()
             finally
             {
                 if (Logging.IsEnabled)
-                    Logging.Exit(this, message, $"Processed received C2D message with Id={message?.MessageId}", nameof(ProcessMessage));
+                    Logging.Exit(this, message, $"Processed received C2D message with Id={message?.MessageId}", nameof(ProcessC2dMessage));
             }
         }
 
@@ -398,7 +402,7 @@ public override async Task CompleteAsync(string lockToken, CancellationToken can
             cancellationToken.ThrowIfCancellationRequested();
             EnsureValidState();
 
-            if (_qos == QualityOfService.AtMostOnce)
+            if (_qosReceivePacketFromService == QualityOfService.AtMostOnce)
             {
                 throw new IotHubException("Complete is not allowed for QoS 0.", isTransient: false);
             }
@@ -565,7 +569,7 @@ private async Task HandleIncomingMessagesAsync()
             if (Logging.IsEnabled)
                 Logging.Enter(this, "Process C2D message via callback", nameof(HandleIncomingMessagesAsync));
 
-            Message message = ProcessMessage();
+            Message message = ProcessC2dMessage();
 
             // We are intentionally not awaiting _deviceMessageReceivedListener callback.
             // This is a user-supplied callback that isn't required to be awaited by us. We can simply invoke it and continue.
@@ -652,7 +656,7 @@ private async Task HandleIncomingEventMessageAsync(Message message)
                 // Add the endpoint as a SystemProperty
                 message.SystemProperties.Add(MessageSystemPropertyNames.InputName, inputName);
 
-                if (_qos == QualityOfService.AtLeastOnce)
+                if (_qosReceivePacketFromService == QualityOfService.AtLeastOnce)
                 {
                     lock (_syncRoot)
                     {
@@ -833,7 +837,7 @@ public override async Task EnableMethodsAsync(CancellationToken cancellationToke
             // Codes_SRS_CSHARP_MQTT_TRANSPORT_18_001:  `EnableMethodsAsync` shall subscribe using the '$iothub/methods/POST/' topic filter.
             // Codes_SRS_CSHARP_MQTT_TRANSPORT_18_002:  `EnableMethodsAsync` shall wait for a SUBACK for the subscription request.
             // Codes_SRS_CSHARP_MQTT_TRANSPORT_18_003:  `EnableMethodsAsync` shall return failure if the subscription request fails.
-            await _channel.WriteAsync(new SubscribePacket(0, new SubscriptionRequest(MethodPostTopicFilter, QualityOfService.AtMostOnce))).ConfigureAwait(true);
+            await _channel.WriteAsync(new SubscribePacket(0, new SubscriptionRequest(MethodPostTopicFilter, _qosReceivePacketFromService))).ConfigureAwait(true);
         }
 
         public override async Task DisableMethodsAsync(CancellationToken cancellationToken)
@@ -855,7 +859,7 @@ public override async Task EnableEventReceiveAsync(bool isAnEdgeModule, Cancella
             // Codes_SRS_CSHARP_MQTT_TRANSPORT_33_021:  `EnableEventReceiveAsync` shall subscribe using the 'devices/{0}/modules/{1}/' topic filter.
             // Codes_SRS_CSHARP_MQTT_TRANSPORT_33_022:  `EnableEventReceiveAsync` shall wait for a SUBACK for the subscription request.
             // Codes_SRS_CSHARP_MQTT_TRANSPORT_33_023:  `EnableEventReceiveAsync` shall return failure if the subscription request fails.
-            await _channel.WriteAsync(new SubscribePacket(0, new SubscriptionRequest(_receiveEventMessageFilter, _qos))).ConfigureAwait(true);
+            await _channel.WriteAsync(new SubscribePacket(0, new SubscriptionRequest(_receiveEventMessageFilter, _qosReceivePacketFromService))).ConfigureAwait(true);
         }
 
         public override async Task DisableEventReceiveAsync(bool isAnEdgeModule, CancellationToken cancellationToken)
@@ -897,7 +901,7 @@ public override async Task EnableTwinPatchAsync(CancellationToken cancellationTo
             // Codes_SRS_CSHARP_MQTT_TRANSPORT_18_010: `EnableTwinPatchAsync` shall subscribe using the '$iothub/twin/PATCH/properties/desired/#' topic filter.
             // Codes_SRS_CSHARP_MQTT_TRANSPORT_18_011: `EnableTwinPatchAsync` shall wait for a SUBACK on the subscription request.
             // Codes_SRS_CSHARP_MQTT_TRANSPORT_18_012: `EnableTwinPatchAsync` shall return failure if the subscription request fails.
-            await _channel.WriteAsync(new SubscribePacket(0, new SubscriptionRequest(TwinPatchTopicFilter, QualityOfService.AtMostOnce))).ConfigureAwait(true);
+            await _channel.WriteAsync(new SubscribePacket(0, new SubscriptionRequest(TwinPatchTopicFilter, _qosReceivePacketFromService))).ConfigureAwait(true);
 
             if (Logging.IsEnabled)
                 Logging.Exit(this, cancellationToken, nameof(EnableTwinPatchAsync));
@@ -1076,7 +1080,7 @@ private async Task SubscribeCloudToDeviceMessagesAsync()
             if (TryStateTransition(TransportState.Open, TransportState.Subscribing))
             {
                 await _channel
-                    .WriteAsync(new SubscribePacket(0, new SubscriptionRequest(_deviceboundMessageFilter, QualityOfService.AtLeastOnce)))
+                    .WriteAsync(new SubscribePacket(0, new SubscriptionRequest(_deviceboundMessageFilter, _qosReceivePacketFromService)))
                     .ConfigureAwait(true);
 
                 if (TryStateTransition(TransportState.Subscribing, TransportState.Receiving)
@@ -1095,7 +1099,7 @@ private Task SubscribeTwinResponsesAsync()
                     0,
                     new SubscriptionRequest(
                         TwinResponseTopicFilter,
-                        QualityOfService.AtMostOnce)));
+                        _qosReceivePacketFromService)));
         }
 
         private bool ParseResponseTopic(string topicName, out int status)

iothub/service/src/JobProperties.cs

@@ -8,7 +8,8 @@ namespace Microsoft.Azure.Devices
 {
     /// <summary>
     /// Contains properties of a Job.
-    /// See online <a href="https://docs.microsoft.com/rest/api/iothub/service/createimportexportjob">documentation</a> for more infomration.
+    /// See online <a href="https://docs.microsoft.com/en-us/rest/api/iothub/service/createimportexportjob">documentation</a>
+    /// for more infomration.
     /// </summary>
     public class JobProperties
     {

iothub/service/src/Microsoft.Azure.Devices.csproj

@@ -174,6 +174,6 @@
     <PackageReference Include="System.Diagnostics.TraceSource" Version="4.3.0" />
     <PackageReference Include="System.Diagnostics.Contracts" Version="4.3.0" />
     <PackageReference Include="Microsoft.Rest.ClientRuntime" Version="2.3.21" />
-    <PackageReference Include="Azure.Core" Version="1.9.0" />
+    <PackageReference Include="Azure.Core" Version="1.22.0" />
   </ItemGroup>
 </Project>

readme.md

@@ -205,12 +205,13 @@ This table shows previous LTS releases and end dates.
 
 | Release                                                                                                                        | LTS Start Date | Maintenance End Date | LTS End Date |
 | :----------------------------------------------------------------------------------------------------------------------------: | :------------: | :------------------: | :----------: |
+| [2022-01-18](https://github.com/Azure/azure-iot-sdk-csharp/releases/tag/lts_2021-3-18-patch4) <sub>patch 4 of 2021-03-18</sub> | 2022-01-18     | 2022-03-18           | 2024-03-17   |
 | [2021-10-19](https://github.com/Azure/azure-iot-sdk-csharp/releases/tag/lts_2021-3-18-patch3) <sub>patch 3 of 2021-03-18</sub> | 2021-10-19     | 2022-03-18           | 2024-03-17   |
 | [2021-8-12](https://github.com/Azure/azure-iot-sdk-csharp/releases/tag/lts_2021-3-18_patch2) <sub>patch 2 of 2021-03-18</sub>  | 2021-08-12     | 2022-03-18           | 2024-03-17   |
-| [2021-8-10](https://github.com/Azure/azure-iot-sdk-csharp/releases/tag/lts_2020-8-19_patch2) <sub>patch 2 of 2021-08-19</sub>  | 2021-08-10     | 2021-08-19           | 2023-08-19   |
+| [2021-8-10](https://github.com/Azure/azure-iot-sdk-csharp/releases/tag/lts_2020-8-19_patch2) <sub>patch 2 of 2020-08-19</sub>  | 2020-08-10     | 2021-08-19           | 2023-08-19   |
 | [2021-6-23](https://github.com/Azure/azure-iot-sdk-csharp/releases/tag/lts_2021-3-18_patch1) <sub>patch 1 of 2021-03-18        | 2020-06-23     | 2022-03-18           | 2024-03-17   |
 | [2021-3-18](https://github.com/Azure/azure-iot-sdk-csharp/releases/tag/lts_2021-3-18)                                          | 2020-03-18     | 2022-03-18           | 2024-03-17   |
-| [2020-9-23](https://github.com/Azure/azure-iot-sdk-csharp/releases/tag/lts_2020-8-19_patch1) <sub>patch 1 of 2021-08-19</sub>  | 2020-09-23     | 2021-08-19           | 2023-08-19   |
+| [2020-9-23](https://github.com/Azure/azure-iot-sdk-csharp/releases/tag/lts_2020-8-19_patch1) <sub>patch 1 of 2020-08-19</sub>  | 2020-09-23     | 2021-08-19           | 2023-08-19   |
 | [2020-8-19](https://github.com/Azure/azure-iot-sdk-csharp/releases/tag/lts_2020-8-19)                                          | 2020-08-19     | 2021-08-19           | 2023-08-19   |
 | [2020-4-3](https://github.com/Azure/azure-iot-sdk-csharp/releases/tag/lts_2020-1-31_patch1) <sub>patch 1 of 2020-01-31</sub>   | 2020-04-03     | 2021-01-30           | 2023-01-30   |
 | [2020-1-31](https://github.com/Azure/azure-iot-sdk-csharp/releases/tag/lts_2020-1-31)                                          | 2020-01-31     | 2021-01-30           | 2023-01-30   |