Remove TLS support for UWP servers because Framework does not support it.

MQTTnet.Core/Server/MqttServerOptions.cs

@@ -8,7 +8,7 @@ namespace MQTTnet.Core.Server
     {
         public DefaultEndpointOptions DefaultEndpointOptions { get; } = new DefaultEndpointOptions();
 
-        public SslEndpointOptions SslEndpointOptions { get; } = new SslEndpointOptions();
+        public MqttServerTlsEndpointOptions TlsEndpointOptions { get; } = new MqttServerTlsEndpointOptions();
         
         public int ConnectionBacklog { get; set; } = 10;
 

MQTTnet.Core/Server/MqttServerOptionsExtensions.cs

@@ -4,16 +4,16 @@ namespace MQTTnet.Core.Server
 {
     public static class MqttServerOptionsExtensions
     {
-        public static int GetSslEndpointPort(this MqttServerOptions options)
+        public static int GetTlsEndpointPort(this MqttServerOptions options)
         {
             if (options == null) throw new ArgumentNullException(nameof(options));
 
-            if (!options.SslEndpointOptions.Port.HasValue)
+            if (!options.TlsEndpointOptions.Port.HasValue)
             {
                 return 8883;
             }
 
-            return options.SslEndpointOptions.Port.Value;
+            return options.TlsEndpointOptions.Port.Value;
         }
 
         public static int GetDefaultEndpointPort(this MqttServerOptions options)

MQTTnet.Core/Server/MqttServerTlsEndpointOptions.cs

@@ -1,6 +1,6 @@
 namespace MQTTnet.Core.Server
 {
-    public sealed class SslEndpointOptions
+    public sealed class MqttServerTlsEndpointOptions
     {
         public bool IsEnabled { get; set; }
 

MQTTnet.Core/Server/MqttServerTlsEndpointOptionsExtensions.cs

@@ -2,7 +2,7 @@
 
 namespace MQTTnet.Core.Server
 {
-    public static class SslEndpointOptionsExtensions
+    public static class MqttServerTlsEndpointOptionsExtensions
     {
         public static int GetPort(this DefaultEndpointOptions options)
         {