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

Frameworks/MQTTnet.NetCoreApp/Implementations/MqttServerAdapter.cs

@@ -17,8 +17,8 @@ namespace MQTTnet.Implementations
     {
         private CancellationTokenSource _cancellationTokenSource;
         private Socket _defaultEndpointSocket;
-        private Socket _sslEndpointSocket;
-        private X509Certificate2 _sslCertificate;
+        private Socket _tlsEndpointSocket;
+        private X509Certificate2 _tlsCertificate;
 
         private bool _isRunning;
 
@@ -40,20 +40,20 @@ namespace MQTTnet.Implementations
                 Task.Run(() => AcceptDefaultEndpointConnectionsAsync(_cancellationTokenSource.Token), _cancellationTokenSource.Token);
             }
 
-            if (options.SslEndpointOptions.IsEnabled)
+            if (options.TlsEndpointOptions.IsEnabled)
             {
-                if (options.SslEndpointOptions.Certificate == null)
+                if (options.TlsEndpointOptions.Certificate == null)
                 {
-                    throw new ArgumentException("SSL certificate is not set.");
+                    throw new ArgumentException("TLS certificate is not set.");
                 }
 
-                _sslCertificate = new X509Certificate2(options.SslEndpointOptions.Certificate);
+                _tlsCertificate = new X509Certificate2(options.TlsEndpointOptions.Certificate);
 
-                _sslEndpointSocket = new Socket(SocketType.Stream, ProtocolType.Tcp);
-                _sslEndpointSocket.Bind(new IPEndPoint(IPAddress.Any, options.GetSslEndpointPort()));
-                _sslEndpointSocket.Listen(options.ConnectionBacklog);
+                _tlsEndpointSocket = new Socket(SocketType.Stream, ProtocolType.Tcp);
+                _tlsEndpointSocket.Bind(new IPEndPoint(IPAddress.Any, options.GetTlsEndpointPort()));
+                _tlsEndpointSocket.Listen(options.ConnectionBacklog);
 
-                Task.Run(() => AcceptSslEndpointConnectionsAsync(_cancellationTokenSource.Token), _cancellationTokenSource.Token);
+                Task.Run(() => AcceptTlsEndpointConnectionsAsync(_cancellationTokenSource.Token), _cancellationTokenSource.Token);
             }
         }
 
@@ -67,8 +67,8 @@ namespace MQTTnet.Implementations
             _defaultEndpointSocket?.Dispose();
             _defaultEndpointSocket = null;
 
-            _sslEndpointSocket?.Dispose();
-            _sslEndpointSocket = null;
+            _tlsEndpointSocket?.Dispose();
+            _tlsEndpointSocket = null;
         }
 
         public void Dispose()
@@ -93,7 +93,7 @@ namespace MQTTnet.Implementations
             }
         }
 
-        private async Task AcceptSslEndpointConnectionsAsync(CancellationToken cancellationToken)
+        private async Task AcceptTlsEndpointConnectionsAsync(CancellationToken cancellationToken)
         {
             while (!cancellationToken.IsCancellationRequested)
             {
@@ -102,14 +102,14 @@ namespace MQTTnet.Implementations
                     var clientSocket = await _defaultEndpointSocket.AcceptAsync();
 
                     var sslStream = new SslStream(new NetworkStream(clientSocket));
-                    await sslStream.AuthenticateAsServerAsync(_sslCertificate, false, SslProtocols.Tls12, false);
+                    await sslStream.AuthenticateAsServerAsync(_tlsCertificate, false, SslProtocols.Tls12, false);
                     
                     var clientAdapter = new MqttChannelCommunicationAdapter(new MqttTcpChannel(clientSocket, sslStream), new DefaultMqttV311PacketSerializer());
                     ClientConnected?.Invoke(this, new MqttClientConnectedEventArgs(clientSocket.RemoteEndPoint.ToString(), clientAdapter));
                 }
                 catch (Exception exception)
                 {
-                    MqttTrace.Error(nameof(MqttServerAdapter), exception, "Error while acceping connection at SSL endpoint.");
+                    MqttTrace.Error(nameof(MqttServerAdapter), exception, "Error while acceping connection at TLS endpoint.");
                 }
             }
         }

Frameworks/MQTTnet.NetCoreApp/Implementations/MqttTcpChannel.cs

@@ -33,10 +33,10 @@ namespace MQTTnet.Implementations
             {
                 await _socket.ConnectAsync(options.Server, options.GetPort());
                 
-                if (options.SslOptions.UseSsl)
+                if (options.TlsOptions.UseTls)
                 {
                     _sslStream = new SslStream(new NetworkStream(_socket, true));
-                    await _sslStream.AuthenticateAsClientAsync(options.Server, LoadCertificates(options), SslProtocols.Tls12, options.SslOptions.CheckCertificateRevocation);
+                    await _sslStream.AuthenticateAsClientAsync(options.Server, LoadCertificates(options), SslProtocols.Tls12, options.TlsOptions.CheckCertificateRevocation);
                 }
             }
             catch (SocketException exception)
@@ -106,12 +106,12 @@ namespace MQTTnet.Implementations
         private static X509CertificateCollection LoadCertificates(MqttClientOptions options)
         {
             var certificates = new X509CertificateCollection();
-            if (options.SslOptions.Certificates == null)
+            if (options.TlsOptions.Certificates == null)
             {
                 return certificates;
             }
 
-            foreach (var certificate in options.SslOptions.Certificates)
+            foreach (var certificate in options.TlsOptions.Certificates)
             {
                 certificates.Add(new X509Certificate(certificate));
             }

Frameworks/MQTTnet.NetFramework/Implementations/MqttServerAdapter.cs

@@ -17,8 +17,8 @@ namespace MQTTnet.Implementations
     {
         private CancellationTokenSource _cancellationTokenSource;
         private Socket _defaultEndpointSocket;
-        private Socket _sslEndpointSocket;
-        private X509Certificate2 _sslCertificate;
+        private Socket _tlsEndpointSocket;
+        private X509Certificate2 _tlsCertificate;
 
         private bool _isRunning;
 
@@ -26,6 +26,8 @@ namespace MQTTnet.Implementations
 
         public void Start(MqttServerOptions options)
         {
+            if (options == null) throw new ArgumentNullException(nameof(options));
+
             if (_isRunning) throw new InvalidOperationException("Server is already started.");
             _isRunning = true;
 
@@ -40,20 +42,20 @@ namespace MQTTnet.Implementations
                 Task.Run(() => AcceptDefaultEndpointConnectionsAsync(_cancellationTokenSource.Token), _cancellationTokenSource.Token);
             }
 
-            if (options.SslEndpointOptions.IsEnabled)
+            if (options.TlsEndpointOptions.IsEnabled)
             {
-                if (options.SslEndpointOptions.Certificate == null)
+                if (options.TlsEndpointOptions.Certificate == null)
                 {
-                    throw new ArgumentException("SSL certificate is not set.");
+                    throw new ArgumentException("TLS certificate is not set.");
                 }
 
-                _sslCertificate = new X509Certificate2(options.SslEndpointOptions.Certificate);
+                _tlsCertificate = new X509Certificate2(options.TlsEndpointOptions.Certificate);
 
-                _sslEndpointSocket = new Socket(SocketType.Stream, ProtocolType.Tcp);
-                _sslEndpointSocket.Bind(new IPEndPoint(IPAddress.Any, options.GetSslEndpointPort()));
-                _sslEndpointSocket.Listen(options.ConnectionBacklog);
+                _tlsEndpointSocket = new Socket(SocketType.Stream, ProtocolType.Tcp);
+                _tlsEndpointSocket.Bind(new IPEndPoint(IPAddress.Any, options.GetTlsEndpointPort()));
+                _tlsEndpointSocket.Listen(options.ConnectionBacklog);
 
-                Task.Run(() => AcceptSslEndpointConnectionsAsync(_cancellationTokenSource.Token), _cancellationTokenSource.Token);
+                Task.Run(() => AcceptTlsEndpointConnectionsAsync(_cancellationTokenSource.Token), _cancellationTokenSource.Token);
             }
         }
 
@@ -67,8 +69,8 @@ namespace MQTTnet.Implementations
             _defaultEndpointSocket?.Dispose();
             _defaultEndpointSocket = null;
 
-            _sslEndpointSocket?.Dispose();
-            _sslEndpointSocket = null;
+            _tlsEndpointSocket?.Dispose();
+            _tlsEndpointSocket = null;
         }
 
         public void Dispose()
@@ -93,7 +95,7 @@ namespace MQTTnet.Implementations
             }
         }
 
-        private async Task AcceptSslEndpointConnectionsAsync(CancellationToken cancellationToken)
+        private async Task AcceptTlsEndpointConnectionsAsync(CancellationToken cancellationToken)
         {
             while (!cancellationToken.IsCancellationRequested)
             {
@@ -102,14 +104,14 @@ namespace MQTTnet.Implementations
                     var clientSocket = await Task.Factory.FromAsync(_defaultEndpointSocket.BeginAccept, _defaultEndpointSocket.EndAccept, null);
 
                     var sslStream = new SslStream(new NetworkStream(clientSocket));
-                    await sslStream.AuthenticateAsServerAsync(_sslCertificate, false, SslProtocols.Tls12, false);
+                    await sslStream.AuthenticateAsServerAsync(_tlsCertificate, false, SslProtocols.Tls12, false);
                     
                     var clientAdapter = new MqttChannelCommunicationAdapter(new MqttTcpChannel(clientSocket, sslStream), new DefaultMqttV311PacketSerializer());
                     ClientConnected?.Invoke(this, new MqttClientConnectedEventArgs(clientSocket.RemoteEndPoint.ToString(), clientAdapter));
                 }
                 catch (Exception exception)
                 {
-                    MqttTrace.Error(nameof(MqttServerAdapter), exception, "Error while acceping connection at SSL endpoint.");
+                    MqttTrace.Error(nameof(MqttServerAdapter), exception, "Error while acceping connection at TLS endpoint.");
                 }
             }
         }

Frameworks/MQTTnet.NetFramework/Implementations/MqttTcpChannel.cs

@@ -33,10 +33,10 @@ namespace MQTTnet.Implementations
             {
                 await Task.Factory.FromAsync(_socket.BeginConnect, _socket.EndConnect, options.Server, options.GetPort(), null);
 
-                if (options.SslOptions.UseSsl)
+                if (options.TlsOptions.UseTls)
                 {
                     _sslStream = new SslStream(new NetworkStream(_socket, true));
-                    await _sslStream.AuthenticateAsClientAsync(options.Server, LoadCertificates(options), SslProtocols.Tls12, options.SslOptions.CheckCertificateRevocation);
+                    await _sslStream.AuthenticateAsClientAsync(options.Server, LoadCertificates(options), SslProtocols.Tls12, options.TlsOptions.CheckCertificateRevocation);
                 }
             }
             catch (SocketException exception)
@@ -113,12 +113,12 @@ namespace MQTTnet.Implementations
         private static X509CertificateCollection LoadCertificates(MqttClientOptions options)
         {
             var certificates = new X509CertificateCollection();
-            if (options.SslOptions.Certificates == null)
+            if (options.TlsOptions.Certificates == null)
             {
                 return certificates;
             }
 
-            foreach (var certificate in options.SslOptions.Certificates)
+            foreach (var certificate in options.TlsOptions.Certificates)
             {
                 certificates.Add(new X509Certificate(certificate));
             }

Frameworks/MQTTnet.UniversalWindows/Implementations/MqttServerAdapter.cs

@@ -1,5 +1,4 @@
 using System;
-using System.Security.Cryptography.X509Certificates;
 using MQTTnet.Core.Adapter;
 using MQTTnet.Core.Diagnostics;
 using MQTTnet.Core.Serializer;
@@ -11,15 +10,15 @@ namespace MQTTnet.Implementations
     public class MqttServerAdapter : IMqttServerAdapter, IDisposable
     {
         private StreamSocketListener _defaultEndpointSocket;
-        private StreamSocketListener _sslEndpointSocket;
-        private X509Certificate2 _sslCertificate;
-
+        
         private bool _isRunning;
 
         public event EventHandler<MqttClientConnectedEventArgs> ClientConnected;
 
         public void Start(MqttServerOptions options)
         {
+            if (options == null) throw new ArgumentNullException(nameof(options));
+
             if (_isRunning) throw new InvalidOperationException("Server is already started.");
             _isRunning = true;
 
@@ -30,18 +29,9 @@ namespace MQTTnet.Implementations
                 _defaultEndpointSocket.ConnectionReceived += AcceptDefaultEndpointConnectionsAsync;                
             }
 
-            if (options.SslEndpointOptions.IsEnabled)
+            if (options.TlsEndpointOptions.IsEnabled)
             {
-                if (options.SslEndpointOptions.Certificate == null)
-                {
-                    throw new ArgumentException("SSL certificate is not set.");
-                }
-
-                _sslCertificate = new X509Certificate2(options.SslEndpointOptions.Certificate);
-
-                _sslEndpointSocket = new StreamSocketListener();
-                _sslEndpointSocket.BindServiceNameAsync(options.GetSslEndpointPort().ToString(), SocketProtectionLevel.Tls12).GetAwaiter().GetResult();
-                _sslEndpointSocket.ConnectionReceived += AcceptSslEndpointConnectionsAsync;
+                throw new NotSupportedException("TLS servers are not supported for UWP apps.");
             }
         }
 
@@ -51,9 +41,6 @@ namespace MQTTnet.Implementations
 
             _defaultEndpointSocket?.Dispose();
             _defaultEndpointSocket = null;
-
-            _sslEndpointSocket?.Dispose();
-            _sslEndpointSocket = null;
         }
 
         public void Dispose()
@@ -73,18 +60,5 @@ namespace MQTTnet.Implementations
                 MqttTrace.Error(nameof(MqttServerAdapter), exception, "Error while acceping connection at default endpoint.");
             }
         }
-
-        private void AcceptSslEndpointConnectionsAsync(StreamSocketListener sender, StreamSocketListenerConnectionReceivedEventArgs args)
-        {
-            try
-            {
-                var clientAdapter = new MqttChannelCommunicationAdapter(new MqttTcpChannel(args.Socket), new DefaultMqttV311PacketSerializer());
-                ClientConnected?.Invoke(this, new MqttClientConnectedEventArgs(args.Socket.Information.RemoteAddress.ToString(), clientAdapter));
-            }
-            catch (Exception exception)
-            {
-                MqttTrace.Error(nameof(MqttServerAdapter), exception, "Error while acceping connection at SSL endpoint.");
-            }
-        }
     }
 }

Frameworks/MQTTnet.UniversalWindows/Implementations/MqttTcpChannel.cs

@@ -32,7 +32,7 @@ namespace MQTTnet.Implementations
             if (options == null) throw new ArgumentNullException(nameof(options));
             try
             {
-                if (!options.SslOptions.UseSsl)
+                if (!options.TlsOptions.UseTls)
                 {
                     await _socket.ConnectAsync(new HostName(options.Server), options.GetPort().ToString());
                 }
@@ -40,7 +40,7 @@ namespace MQTTnet.Implementations
                 {
                     _socket.Control.ClientCertificate = LoadCertificate(options);
 
-                    if (!options.SslOptions.CheckCertificateRevocation)
+                    if (!options.TlsOptions.CheckCertificateRevocation)
                     {
                         _socket.Control.IgnorableServerCertificateErrors.Add(ChainValidationResult.IncompleteChain);
                         _socket.Control.IgnorableServerCertificateErrors.Add(ChainValidationResult.RevocationInformationMissing);
@@ -104,17 +104,17 @@ namespace MQTTnet.Implementations
 
         private static Certificate LoadCertificate(MqttClientOptions options)
         {
-            if (options.SslOptions.Certificates == null || !options.SslOptions.Certificates.Any())
+            if (options.TlsOptions.Certificates == null || !options.TlsOptions.Certificates.Any())
             {
                 return null;
             }
 
-            if (options.SslOptions.Certificates.Count > 1)
+            if (options.TlsOptions.Certificates.Count > 1)
             {
                 throw new NotSupportedException("Only one client certificate is supported for UWP.");
             }
 
-            return new Certificate(options.SslOptions.Certificates.First().AsBuffer());
+            return new Certificate(options.TlsOptions.Certificates.First().AsBuffer());
         }
     }
 }

MQTTnet.Core/Client/MqttClientOptions.cs

@@ -8,7 +8,7 @@ namespace MQTTnet.Core.Client
 
         public int? Port { get; set; }
         
-        public MqttClientSslOptions SslOptions { get; } = new MqttClientSslOptions();
+        public MqttClientTlsOptions TlsOptions { get; } = new MqttClientTlsOptions();
 
         public string UserName { get; set; }
 

MQTTnet.Core/Client/MqttClientOptionsExtensions.cs

@@ -13,7 +13,7 @@ namespace MQTTnet.Core.Client
                 return options.Port.Value;
             }
 
-            return !options.SslOptions.UseSsl ? 1883 : 8883;
+            return !options.TlsOptions.UseTls ? 1883 : 8883;
         }
     }
 }

MQTTnet.Core/Client/MqttClientTlsOptions.cs

@@ -2,9 +2,9 @@
 
 namespace MQTTnet.Core.Client
 {
-    public sealed class MqttClientSslOptions
+    public sealed class MqttClientTlsOptions
     {
-        public bool UseSsl { get; set; }
+        public bool UseTls { get; set; }
 
         public bool CheckCertificateRevocation { get; set; }
 

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)
         {

README.md

@@ -10,7 +10,7 @@ MQTTnet is a .NET library for MQTT based communication. It provides a MQTT clien
 ## Features
 * MQTT client included
 * MQTT server (broker) included
-* TLS 1.2 support for client and server
+* TLS 1.2 support for client and server (but not UWP servers)
 * Async support
 * List of connected clients available (server only)
 * Extensible communication channels (i.e. In-Memory, TCP, TCP+SSL, WebSockets (not included in this project))

Tests/MQTTnet.TestApp.UniversalWindows/MainPage.xaml

@@ -24,7 +24,7 @@
             <TextBlock>ClientId:</TextBlock>
             <TextBox x:Name="ClientId"></TextBox>
 
-            <CheckBox x:Name="UseSsl">Use SSL</CheckBox>
+            <CheckBox x:Name="UseTls">Use TLS</CheckBox>
             <Button Click="Connect">Connect</Button>
             <TextBlock>Trace:</TextBlock>
         </StackPanel>

Tests/MQTTnet.TestApp.UniversalWindows/MainPage.xaml.cs

@@ -41,7 +41,7 @@ namespace MQTTnet.TestApp.UniversalWindows
                 ClientId = ClientId.Text
             };
 
-            options.SslOptions.UseSsl = UseSsl.IsChecked == true;
+            options.TlsOptions.UseTls = UseTls.IsChecked == true;
 
             try
             {