Fixed an TLS issue in the MqttClientOptionsBuilder; Fix a subscription issue in the managed client.

Frameworks/MQTTnet.NetStandard/Client/IMqttClient.cs

@@ -15,6 +15,6 @@ namespace MQTTnet.Client
         Task DisconnectAsync();
 
         Task<IList<MqttSubscribeResult>> SubscribeAsync(IEnumerable<TopicFilter> topicFilters);
-        Task UnsubscribeAsync(IEnumerable<string> topicFilters);
+        Task UnsubscribeAsync(IEnumerable<string> topics);
     }
 }

Frameworks/MQTTnet.NetStandard/Client/MqttClient.cs

@@ -12,7 +12,7 @@ using MQTTnet.Protocol;
 
 namespace MQTTnet.Client
 {
-    public class MqttClient : IMqttClient
+    public class MqttClient : IMqttClient, IDisposable
     {
         private readonly IMqttClientAdapterFactory _adapterFactory;
         private readonly MqttPacketDispatcher _packetDispatcher;
@@ -180,6 +180,11 @@ namespace MQTTnet.Client
             }
         }
 
+        public void Dispose()
+        {
+            _cancellationTokenSource?.Dispose();
+        }
+
         private async Task<MqttConnAckPacket> AuthenticateAsync(MqttApplicationMessage willApplicationMessage)
         {
             var connectPacket = new MqttConnectPacket

Frameworks/MQTTnet.NetStandard/Client/MqttClientOptionsBuilder.cs

@@ -119,11 +119,11 @@ namespace MQTTnet.Client
 
                 if (_tcpOptions != null)
                 {
-                    _options.ChannelOptions = _tcpOptions;
+                    _tcpOptions.TlsOptions = _tlsOptions;
                 }
-                else
+                else if (_webSocketOptions != null)
                 {
-                    _options.ChannelOptions = _webSocketOptions;
+                    _webSocketOptions.TlsOptions = _tlsOptions;
                 }
             }