Fix build errors and several warnings

Source/MQTTnet.Extensions.TopicTemplate/TopicTemplateExtensions.cs

@@ -32,20 +32,16 @@ namespace MQTTnet.Extensions.TopicTemplate
             {
                 throw new ArgumentException("message does not have a response topic");
             }
-            
+
             return builder.WithTopic(message.ResponseTopic).WithCorrelationData(message.CorrelationData);
         }
-        
+
         /// <summary>
         ///     Set the filter topic according to the template, with
         ///     remaining template parameters substituted by single-level
         ///     wildcard.
         /// </summary>
         /// <param
-        ///     name="builder">
-        ///     a filter builder
-        /// </param>
-        /// <param
         ///     name="topicTemplate">
         ///     a topic template
         /// </param>
@@ -58,7 +54,7 @@ namespace MQTTnet.Extensions.TopicTemplate
         {
             return new MqttTopicFilterBuilder().WithTopicTemplate(topicTemplate, subscribeTreeRoot);
         }
-        
+
         /// <summary>
         ///     Return a message builder to respond to this message. The
         ///     message's response topic and correlation data are included
@@ -75,7 +71,7 @@ namespace MQTTnet.Extensions.TopicTemplate
         {
             return new MqttApplicationMessageBuilder().AsResponseTo(message);
         }
-        
+
         /// <summary>
         ///     Return whether the message matches the given topic template.
         /// </summary>
@@ -96,7 +92,7 @@ namespace MQTTnet.Extensions.TopicTemplate
         {
             return topicTemplate.MatchesTopic(message.Topic, subtree);
         }
-        
+
         /// <summary>
         ///     Set the filter topic according to the template, with
         ///     template parameters substituted by a single-level
@@ -119,7 +115,7 @@ namespace MQTTnet.Extensions.TopicTemplate
         {
             return builder.WithTopic(subscribeTreeRoot ? topicTemplate.TopicTreeRootFilter : topicTemplate.TopicFilter);
         }
-        
+
         /// <summary>
         ///     Set the publication topic according to the topic template. The template
         ///     must not have remaining (unset) parameters or contain wildcards.
@@ -143,7 +139,7 @@ namespace MQTTnet.Extensions.TopicTemplate
             {
                 throw new ArgumentException("topic templates must be parameter-less when sending " + topicTemplate.Template);
             }
-            
+
             MqttTopicValidator.ThrowIfInvalid(topicTemplate.Template);
             return builder.WithTopic(topicTemplate.Template);
         }

Source/MQTTnet.Tests/Clients/ManagedMqttClient/ManagedMqttClient_Tests.cs

@@ -7,7 +7,6 @@ using System.Collections.Generic;
 using System.Linq;
 using System.Threading;
 using System.Threading.Tasks;
-using Microsoft.CodeAnalysis.CSharp.Syntax;
 using Microsoft.VisualStudio.TestTools.UnitTesting;
 using MQTTnet.Client;
 using MQTTnet.Diagnostics;
@@ -678,9 +677,9 @@ namespace MQTTnet.Tests.Clients.ManagedMqttClient
             {
                 testEnvironment.IgnoreClientLogErrors = true;
                 bool reject = true;
-                var receivedOnServer = new TaskCompletionSource();
+                var receivedOnServer = new TaskCompletionSource<object>();
                 managedClient.ApplicationMessageProcessedAsync += e => Task.FromResult(reject &= e.Exception is null);
-                testEnvironment.Server.InterceptingInboundPacketAsync += e => 
+                testEnvironment.Server.InterceptingInboundPacketAsync += e =>
                 {
                     if (e.Packet is MqttPublishPacket)
                     {
@@ -690,14 +689,14 @@ namespace MQTTnet.Tests.Clients.ManagedMqttClient
                         }
                         else
                         {
-                            receivedOnServer.TrySetResult();
+                            receivedOnServer.TrySetResult(null);
                         }
                     }
                     return Task.CompletedTask;
                 };
 
 
-                await managedClient.EnqueueAsync(new MqttApplicationMessage { Topic = topic, Payload = new byte[] { 1 }, Retain = true, QualityOfServiceLevel = MqttQualityOfServiceLevel.AtLeastOnce });
+                await managedClient.EnqueueAsync(new MqttApplicationMessage { Topic = topic, PayloadSegment = new ArraySegment<byte>(new byte[] { 1 }), Retain = true, QualityOfServiceLevel = MqttQualityOfServiceLevel.AtLeastOnce });
 
                 var timeoutTask = Task.Delay(testTimeout);
 

Source/MQTTnet/Server/Internal/MqttServerKeepAliveMonitor.cs

@@ -57,7 +57,7 @@ namespace MQTTnet.Server
                 while (!cancellationToken.IsCancellationRequested)
                 {
                     TryProcessClients();
-                    Sleep(_options.KeepAliveMonitorInterval);
+                    Sleep(_options.KeepAliveOptions.MonitorInterval);
                 }
             }
             catch (OperationCanceledException)