Extend MQTTnet.Server application.

MQTTnet.sln

@@ -47,7 +47,7 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "MQTTnet.Extensions.ManagedC
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "MQTTnet.AspNetCore.Tests", "Tests\MQTTnet.AspNetCore.Tests\MQTTnet.AspNetCore.Tests.csproj", "{61B62223-F5D0-48E4-BBD6-2CBA9353CB5E}"
 EndProject
-Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "MQTTnetServer", "Source\MQTTnetServer\MQTTnetServer.csproj", "{5699FB8C-838C-4AB0-80A5-9CA809F9B65B}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "MQTTnet.Server", "Source\MQTTnet.Server\MQTTnet.Server.csproj", "{5699FB8C-838C-4AB0-80A5-9CA809F9B65B}"
 EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution

MQTTnet.sln.DotSettings

@@ -7,6 +7,7 @@
 	<s:Boolean x:Key="/Default/Environment/SettingsMigration/IsMigratorApplied/=JetBrains_002EReSharper_002EPsi_002ECSharp_002ECodeStyle_002ECSharpKeepExistingMigration/@EntryIndexedValue">True</s:Boolean>
 	<s:Boolean x:Key="/Default/Environment/SettingsMigration/IsMigratorApplied/=JetBrains_002EReSharper_002EPsi_002ECSharp_002ECodeStyle_002ECSharpPlaceEmbeddedOnSameLineMigration/@EntryIndexedValue">True</s:Boolean>
 	<s:Boolean x:Key="/Default/Environment/SettingsMigration/IsMigratorApplied/=JetBrains_002EReSharper_002EPsi_002ECSharp_002ECodeStyle_002ECSharpRenamePlacementToArrangementMigration/@EntryIndexedValue">True</s:Boolean>
+	<s:Boolean x:Key="/Default/Environment/SettingsMigration/IsMigratorApplied/=JetBrains_002EReSharper_002EPsi_002ECSharp_002ECodeStyle_002ECSharpUseContinuousIndentInsideBracesMigration/@EntryIndexedValue">True</s:Boolean>
 	<s:Boolean x:Key="/Default/Environment/SettingsMigration/IsMigratorApplied/=JetBrains_002EReSharper_002EPsi_002ECSharp_002ECodeStyle_002ESettingsUpgrade_002EAddAccessorOwnerDeclarationBracesMigration/@EntryIndexedValue">True</s:Boolean>
 	<s:Boolean x:Key="/Default/Environment/SettingsMigration/IsMigratorApplied/=JetBrains_002EReSharper_002EPsi_002ECSharp_002ECodeStyle_002ESettingsUpgrade_002ECSharpPlaceAttributeOnSameLineMigration/@EntryIndexedValue">True</s:Boolean>
 	<s:Boolean x:Key="/Default/Environment/SettingsMigration/IsMigratorApplied/=JetBrains_002EReSharper_002EPsi_002ECSharp_002ECodeStyle_002ESettingsUpgrade_002EMigrateBlankLinesAroundFieldToBlankLinesAroundProperty/@EntryIndexedValue">True</s:Boolean>

Source/MQTTnet.AspnetCore/MqttWebSocketServerAdapter.cs

@@ -40,7 +40,6 @@ namespace MQTTnet.AspNetCore
 
         public void Dispose()
         {
-            StopAsync().GetAwaiter().GetResult();
         }
     }
 }

Source/MQTTnet.Server/Configuration/EndpointConfiguration.cs

@@ -0,0 +1,9 @@
+namespace MQTTnet.Server.Configuration
+{
+    public class EndpointConfiguration
+    {
+        public int Port { get; set; } = 1883;
+
+        public int BacklogSize { get; set; } = 10;
+    }
+}

Source/MQTTnet.Server/Configuration/ListenModel.cs

@@ -1,4 +1,4 @@
-namespace MQTTnetServer.Settings
+namespace MQTTnet.Server.Configuration
 {
     /// <summary>
     /// Listen Entry Settings Model

Source/MQTTnet.Server/Configuration/ListenProtocolTypes.cs

@@ -1,4 +1,4 @@
-namespace MQTTnetServer.Settings
+namespace MQTTnet.Server.Configuration
 {
     /// <summary>
     /// Listen Protocol Types

Source/MQTTnet.Server/Configuration/MqttNetServerConfiguration.cs

@@ -0,0 +1,7 @@
+namespace MQTTnet.Server.Configuration
+{
+    public class MqttNetServerConfiguration
+    {
+        
+    }
+}

Source/MQTTnet.Server/Configuration/SettingsModel.cs

@@ -1,6 +1,6 @@
 using System.Collections.Generic;
 
-namespace MQTTnetServer.Settings
+namespace MQTTnet.Server.Configuration
 {
     /// <summary>
     /// Main Settings Model

Source/MQTTnet.Server/Controllers/ValuesController.cs

@@ -1,10 +1,7 @@
-using System;
+using System.Collections.Generic;
-using System.Collections.Generic;
-using System.Linq;
-using System.Threading.Tasks;
 using Microsoft.AspNetCore.Mvc;
 
-namespace MQTTnetServer.Controllers
+namespace MQTTnet.Server.Controllers
 {
     [Route("api/[controller]")]
     [ApiController]

Source/MQTTnet.Server/LICENSE

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2017 Christian Kratky
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

Source/MQTTnet.Server/Logging/MqttNetChildLoggerWrapper.cs

@@ -0,0 +1,43 @@
+using System;
+using MQTTnet.Diagnostics;
+
+namespace MQTTnet.Server.Logging
+{
+    public class MqttNetChildLoggerWrapper : IMqttNetChildLogger
+    {
+        private readonly MqttNetLoggerWrapper _logger;
+        private readonly string _source;
+
+        public MqttNetChildLoggerWrapper(string source, MqttNetLoggerWrapper logger)
+        {
+            _logger = logger ?? throw new ArgumentNullException(nameof(logger));
+
+            _source = source;
+        }
+
+        public IMqttNetChildLogger CreateChildLogger(string source = null)
+        {
+            return _logger.CreateChildLogger(source);
+        }
+
+        public void Verbose(string message, params object[] parameters)
+        {
+            _logger.Publish(MqttNetLogLevel.Verbose, _source, message, parameters, null);
+        }
+
+        public void Info(string message, params object[] parameters)
+        {
+            _logger.Publish(MqttNetLogLevel.Info, _source, message, parameters, null);
+        }
+
+        public void Warning(Exception exception, string message, params object[] parameters)
+        {
+            _logger.Publish(MqttNetLogLevel.Warning, _source, message, parameters, exception);
+        }
+
+        public void Error(Exception exception, string message, params object[] parameters)
+        {
+            _logger.Publish(MqttNetLogLevel.Error, _source, message, parameters, exception);
+        }
+    }
+}

Source/MQTTnet.Server/Logging/MqttNetLoggerWrapper.cs

@@ -0,0 +1,48 @@
+using System;
+using Microsoft.Extensions.Logging;
+using MQTTnet.Diagnostics;
+
+namespace MQTTnet.Server.Logging
+{
+    public class MqttNetLoggerWrapper : IMqttNetLogger
+    {
+        private readonly ILogger<MqttServer> _logger;
+
+        public MqttNetLoggerWrapper(ILogger<MqttServer> logger)
+        {
+            _logger = logger ?? throw new ArgumentNullException(nameof(logger));
+        }
+
+        public event EventHandler<MqttNetLogMessagePublishedEventArgs> LogMessagePublished;
+        
+        public IMqttNetChildLogger CreateChildLogger(string source = null)
+        {
+            return new MqttNetChildLoggerWrapper(source, this);
+        }
+
+        public void Publish(MqttNetLogLevel logLevel, string source, string message, object[] parameters, Exception exception)
+        {
+            var convertedLogLevel = ConvertLogLevel(logLevel);
+
+            if (!_logger.IsEnabled(convertedLogLevel))
+            {
+                return;
+            }
+
+            _logger.Log(convertedLogLevel, exception, message, parameters);
+        }
+
+        private static LogLevel ConvertLogLevel(MqttNetLogLevel logLevel)
+        {
+            switch (logLevel)
+            {
+                case MqttNetLogLevel.Error: return LogLevel.Error;
+                case MqttNetLogLevel.Warning: return LogLevel.Warning;
+                case MqttNetLogLevel.Info: return LogLevel.Information;
+                case MqttNetLogLevel.Verbose: return LogLevel.Trace;
+            }
+
+            return LogLevel.Debug;
+        }
+    }
+}

Source/MQTTnet.Server/MQTTnet.Server.csproj

@@ -3,11 +3,11 @@
   <PropertyGroup>
     <TargetFramework>netcoreapp2.2</TargetFramework>
     <AspNetCoreHostingModel>InProcess</AspNetCoreHostingModel>
-    <AssemblyName>MQTTnetServer</AssemblyName>
+    <AssemblyName>MQTTnet.Server</AssemblyName>
-    <RootNamespace>MQTTnetServer</RootNamespace>
+    <RootNamespace>MQTTnet.Server</RootNamespace>
     <GeneratePackageOnBuild>False</GeneratePackageOnBuild>
     <Company />
-    <Product />
+    <Product>MQTTnet</Product>
     <Description />
     <Authors />
     <PackageId />
@@ -16,8 +16,12 @@
     <LangVersion>latest</LangVersion>
   </PropertyGroup>
 
+  <PropertyGroup>
+    <StartupObject></StartupObject>
+  </PropertyGroup>
+
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|AnyCPU'">
-    <DocumentationFile>MQTTnetServer.xml</DocumentationFile>
+    <DocumentationFile></DocumentationFile>
     <WarningsAsErrors>NU1605</WarningsAsErrors>
     <NoWarn>1701;1702</NoWarn>
   </PropertyGroup>
@@ -29,8 +33,12 @@
   </ItemGroup>
 
   <ItemGroup>
+    <PackageReference Include="IronPython" Version="2.7.9" />
+    <PackageReference Include="IronPython.StdLib" Version="2.7.9" />
     <PackageReference Include="Microsoft.AspNetCore.App" />
     <PackageReference Include="Microsoft.AspNetCore.Razor.Design" Version="2.2.0" PrivateAssets="All" />
+    <PackageReference Include="Swashbuckle.AspNetCore.SwaggerGen" Version="4.0.1" />
+    <PackageReference Include="Swashbuckle.AspNetCore.SwaggerUI" Version="4.0.1" />
   </ItemGroup>
 
   <ItemGroup>
@@ -38,4 +46,16 @@
     <ProjectReference Include="..\MQTTnet\MQTTnet.csproj" />
   </ItemGroup>
 
+  <ItemGroup>
+    <None Update="LICENSE">
+      <CopyToOutputDirectory>Always</CopyToOutputDirectory>
+    </None>
+    <None Update="Scripts\readme.md">
+      <CopyToOutputDirectory>Always</CopyToOutputDirectory>
+    </None>
+    <None Update="Scripts\00_sample.py">
+      <CopyToOutputDirectory>Always</CopyToOutputDirectory>
+    </None>
+  </ItemGroup>
+
 </Project>

Source/MQTTnet.Server/Mqtt/MqttApplicationMessageInterceptor.cs

@@ -0,0 +1,50 @@
+using System;
+using System.Threading.Tasks;
+using IronPython.Runtime;
+using Microsoft.Extensions.Logging;
+using MQTTnet.Protocol;
+using MQTTnet.Server.Scripting;
+
+namespace MQTTnet.Server.Mqtt
+{
+    public class MqttApplicationMessageInterceptor : IMqttServerApplicationMessageInterceptor
+    {
+        private readonly PythonScriptHostService _pythonScriptHostService;
+        private readonly ILogger<MqttApplicationMessageInterceptor> _logger;
+
+        public MqttApplicationMessageInterceptor(PythonScriptHostService pythonScriptHostService, ILogger<MqttApplicationMessageInterceptor> logger)
+        {
+            _pythonScriptHostService = pythonScriptHostService ?? throw new ArgumentNullException(nameof(pythonScriptHostService));
+            _logger = logger ?? throw new ArgumentNullException(nameof(logger));
+        }
+
+        public Task InterceptApplicationMessagePublishAsync(MqttApplicationMessageInterceptorContext context)
+        {
+            try
+            {
+                var pythonContext = new PythonDictionary
+                {
+                    { "accept_publish", context.AcceptPublish },
+                    { "close_connection", context.CloseConnection },
+                    { "client_id", context.ClientId },
+                    { "topic", context.ApplicationMessage.Topic },
+                    { "qos", (int)context.ApplicationMessage.QualityOfServiceLevel },
+                    { "retain", context.ApplicationMessage.Retain }
+                };
+
+                _pythonScriptHostService.InvokeOptionalFunction("on_intercept_application_message", pythonContext);
+
+                context.AcceptPublish = (bool)pythonContext.get("accept_publish", context.AcceptPublish);
+                context.CloseConnection = (bool)pythonContext.get("close_connection", context.CloseConnection);
+                context.ApplicationMessage.Topic = (string)pythonContext.get("topic", context.ApplicationMessage.Topic);
+                context.ApplicationMessage.QualityOfServiceLevel = (MqttQualityOfServiceLevel)(int)pythonContext.get("qos", (int)context.ApplicationMessage.QualityOfServiceLevel);
+            }
+            catch (Exception exception)
+            {
+                _logger.LogError(exception, "Error while intercepting application message.");
+            }
+
+            return Task.CompletedTask;
+        }
+    }
+}

Source/MQTTnet.Server/Mqtt/MqttConnectionValidator.cs

@@ -0,0 +1,46 @@
+using System;
+using System.Threading.Tasks;
+using IronPython.Runtime;
+using Microsoft.Extensions.Logging;
+using MQTTnet.Protocol;
+using MQTTnet.Server.Scripting;
+
+namespace MQTTnet.Server.Mqtt
+{
+    public class MqttConnectionValidator : IMqttServerConnectionValidator
+    {
+        private readonly PythonScriptHostService _pythonScriptHostService;
+        private readonly ILogger<MqttConnectionValidator> _logger;
+
+        public MqttConnectionValidator(PythonScriptHostService pythonScriptHostService, ILogger<MqttConnectionValidator> logger)
+        {
+            _pythonScriptHostService = pythonScriptHostService ?? throw new ArgumentNullException(nameof(pythonScriptHostService));
+            _logger = logger ?? throw new ArgumentNullException(nameof(logger));
+        }
+
+        public Task ValidateConnectionAsync(MqttConnectionValidatorContext context)
+        {
+            try
+            {
+                var pythonContext = new PythonDictionary
+                {
+                    { "client_id", context.ClientId },
+                    { "endpoint", context.Endpoint },
+                    { "username", context.Username },
+                    { "password", context.Password },
+                    { "result", PythonConvert.Pythonfy(context.ReturnCode) }
+                };
+
+                _pythonScriptHostService.InvokeOptionalFunction("on_validate_client_connection", pythonContext);
+
+                context.ReturnCode = PythonConvert.ParseEnum<MqttConnectReturnCode>((string)pythonContext["result"]);
+            }
+            catch (Exception exception)
+            {
+                _logger.LogError(exception, "Error while validating client connection.");
+            }
+
+            return Task.CompletedTask;
+        }
+    }
+}

Source/MQTTnet.Server/Mqtt/MqttServerService.cs

@@ -0,0 +1,101 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using IronPython.Runtime;
+using Microsoft.Extensions.Logging;
+using MQTTnet.Adapter;
+using MQTTnet.AspNetCore;
+using MQTTnet.Implementations;
+using MQTTnet.Protocol;
+using MQTTnet.Server.Logging;
+using MQTTnet.Server.Scripting;
+
+namespace MQTTnet.Server.Mqtt
+{
+    public class MqttServerService
+    {
+        private readonly ILogger<MqttServerService> _logger;
+
+        private readonly MqttConnectionValidator _mqttConnectionValidator;
+        private readonly MqttSubscriptionInterceptor _mqttSubscriptionInterceptor;
+        private readonly MqttApplicationMessageInterceptor _mqttApplicationMessageInterceptor;
+        private readonly PythonScriptHostService _pythonScriptHostService;
+
+        private readonly IMqttServer _mqttServer;
+
+        public MqttServerService(
+            IMqttServerFactory mqttServerFactory,
+            MqttWebSocketServerAdapter webSocketServerAdapter,
+            MqttNetLoggerWrapper mqttNetLogger,
+            MqttConnectionValidator mqttConnectionValidator,
+            MqttSubscriptionInterceptor mqttSubscriptionInterceptor,
+            MqttApplicationMessageInterceptor mqttApplicationMessageInterceptor,
+            PythonScriptHostService pythonScriptHostService,
+            ILogger<MqttServerService> logger)
+        {
+            _mqttConnectionValidator = mqttConnectionValidator ?? throw new ArgumentNullException(nameof(mqttConnectionValidator));
+            _mqttSubscriptionInterceptor = mqttSubscriptionInterceptor ?? throw new ArgumentNullException(nameof(mqttSubscriptionInterceptor));
+            _mqttApplicationMessageInterceptor = mqttApplicationMessageInterceptor ?? throw new ArgumentNullException(nameof(mqttApplicationMessageInterceptor));
+            _pythonScriptHostService = pythonScriptHostService ?? throw new ArgumentNullException(nameof(pythonScriptHostService));
+            _logger = logger ?? throw new ArgumentNullException(nameof(logger));
+
+            var adapters = new List<IMqttServerAdapter>
+            {
+                new MqttTcpServerAdapter(new MqttNetChildLoggerWrapper(null, mqttNetLogger)),
+                webSocketServerAdapter
+            };
+
+            _mqttServer = mqttServerFactory.CreateMqttServer(adapters);
+        }
+
+        public void Configure()
+        {
+            _pythonScriptHostService.RegisterProxyObject("publish", new Action<PythonDictionary>(Publish));
+
+            var options = new MqttServerOptionsBuilder()
+                .WithDefaultEndpoint()
+                .WithDefaultEndpointPort(1883)
+                .WithConnectionValidator(_mqttConnectionValidator)
+                .WithApplicationMessageInterceptor(_mqttApplicationMessageInterceptor)
+                .WithSubscriptionInterceptor(_mqttSubscriptionInterceptor)
+                .Build();
+
+            _mqttServer.StartAsync(options).GetAwaiter().GetResult();
+
+            _logger.LogInformation("MQTT server started.");
+        }
+
+        private void Publish(PythonDictionary parameters)
+        {
+            var applicationMessageBuilder = new MqttApplicationMessageBuilder()
+                .WithTopic((string)parameters.get("topic", null))
+                .WithRetainFlag((bool)parameters.get("retain", false))
+                .WithQualityOfServiceLevel((MqttQualityOfServiceLevel)(int)parameters.get("qos", 0));
+
+            var payload = parameters.get("payload", null);
+            var binaryPayload = new byte[0];
+
+            if (payload is string stringPayload)
+            {
+                binaryPayload = Encoding.UTF8.GetBytes(stringPayload);
+            }
+            else if (payload is ByteArray byteArray)
+            {
+                binaryPayload = byteArray.ToArray();
+            }
+            else if (payload is IEnumerable<int> intArray)
+            {
+                binaryPayload = intArray.Select(Convert.ToByte).ToArray();
+            }
+
+            applicationMessageBuilder = applicationMessageBuilder
+                .WithPayload(binaryPayload);
+
+            var applicationMessage = applicationMessageBuilder.Build();
+
+            _mqttServer.PublishAsync(applicationMessage).GetAwaiter().GetResult();
+            _logger.LogInformation($"Published topic '{applicationMessage.Topic}' from server.");
+        }
+    }
+}

Source/MQTTnet.Server/Mqtt/MqttSubscriptionInterceptor.cs

@@ -0,0 +1,47 @@
+using System;
+using System.Threading.Tasks;
+using IronPython.Runtime;
+using Microsoft.Extensions.Logging;
+using MQTTnet.Server.Scripting;
+
+namespace MQTTnet.Server.Mqtt
+{
+    public class MqttSubscriptionInterceptor : IMqttServerSubscriptionInterceptor
+    {
+        private readonly PythonScriptHostService _pythonScriptHostService;
+        private readonly ILogger<MqttSubscriptionInterceptor> _logger;
+
+        public MqttSubscriptionInterceptor(PythonScriptHostService pythonScriptHostService, ILogger<MqttSubscriptionInterceptor> logger)
+        {
+            _pythonScriptHostService = pythonScriptHostService ?? throw new ArgumentNullException(nameof(pythonScriptHostService));
+            _logger = logger ?? throw new ArgumentNullException(nameof(logger));
+        }
+
+        public Task InterceptSubscriptionAsync(MqttSubscriptionInterceptorContext context)
+        {
+            try
+            {
+                var pythonContext = new PythonDictionary
+                {
+                    { "accept_subscription", context.AcceptSubscription },
+                    { "close_connection", context.CloseConnection },
+
+                    { "client_id", context.ClientId },
+                    { "topic", context.TopicFilter.Topic },
+                    { "qos", (int)context.TopicFilter.QualityOfServiceLevel }
+                };
+
+                _pythonScriptHostService.InvokeOptionalFunction("on_intercept_subscription", pythonContext);
+
+                context.AcceptSubscription = (bool)pythonContext["accept_subscription"];
+                context.CloseConnection = (bool)pythonContext["close_connection"];
+            }
+            catch (Exception exception)
+            {
+                _logger.LogError(exception, "Error while intercepting subscription.");
+            }
+
+            return Task.CompletedTask;
+        }
+    }
+}

Source/MQTTnet.Server/Program.cs

@@ -0,0 +1,143 @@
+using System;
+using System.Collections.Generic;
+using Microsoft.AspNetCore;
+using Microsoft.AspNetCore.Hosting;
+using Microsoft.Extensions.Configuration;
+using MQTTnet.Server.Configuration;
+
+namespace MQTTnet.Server
+{
+    public static class Program
+    {
+        public static int Main(string[] args)
+        {
+            try
+            {
+                PrintLogo();
+
+                CreateWebHostBuilder(args).Build().Run();
+                return 0;
+            }
+            catch (Exception exception)
+            {
+                Console.WriteLine(exception);
+                return -1;
+            }
+        }
+
+        private static void PrintLogo()
+        {
+            Console.ForegroundColor = ConsoleColor.Red;
+
+            Console.WriteLine(@"
+  __  __  ____ _______ _______         _      _____                          
+ |  \/  |/ __ \__   __|__   __|       | |    / ____|                         
+ | \  / | |  | | | |     | |_ __   ___| |_  | (___   ___ _ ____   _____ _ __ 
+ | |\/| | |  | | | |     | | '_ \ / _ \ __|  \___ \ / _ \ '__\ \ / / _ \ '__|
+ | |  | | |__| | | |     | | | | |  __/ |_   ____) |  __/ |   \ V /  __/ |   
+ |_|  |_|\___\_\ |_|     |_|_| |_|\___|\__| |_____/ \___|_|    \_/ \___|_|");
+
+            Console.ForegroundColor = ConsoleColor.White;
+            Console.WriteLine(@"
+          -- The official MQTT server implementation of MQTTnet --        
+                 Copyright (c) 2017-2019 The MQTTnet Team");
+
+            Console.ForegroundColor = ConsoleColor.Blue;
+            Console.WriteLine(@"
+                   https://github.com/chkr1011/MQTTnet");
+
+            Console.ForegroundColor = ConsoleColor.White;
+            Console.WriteLine(@"
+ Version: 1.0.0-alpha1
+ License: MIT (read LICENSE file)
+");
+
+            Console.BackgroundColor = ConsoleColor.White;
+            Console.ForegroundColor = ConsoleColor.Red;
+            Console.WriteLine(" ! THIS IS AN ALPHA VERSION! IT IS NOT RECOMMENDED TO USE IT FOR ANY DIFFERENT PURPOSE THAN TESTING OR EVALUATING!");
+            Console.WriteLine();
+        }
+
+        private static IWebHostBuilder CreateWebHostBuilder(string[] args)
+        {
+            var webHost = WebHost.CreateDefaultBuilder(args)
+                .UseKestrel(kestrelOptions =>
+                {
+                    kestrelOptions.ListenAnyIP(80, listenOptions =>
+                    {
+                        listenOptions.NoDelay = true;
+                    });
+                });
+            
+            //var listen = ReadListenSettings();
+            //webHost
+            //     .UseKestrel(o =>
+            //     {
+            //         if (listen?.Length > 0)
+            //         {
+            //             foreach (var item in listen)
+            //             {
+            //                 if (item.Address?.Trim() == "*")
+            //                 {
+            //                     if (item.Protocol == ListenProtocolTypes.MQTT)
+            //                     {
+            //                         o.ListenAnyIP(item.Port, c => c.UseMqtt());
+            //                     }
+            //                     else
+            //                     {
+            //                         o.ListenAnyIP(item.Port);
+            //                     }
+            //                 }
+            //                 else if (item.Address?.Trim() == "localhost")
+            //                 {
+            //                     if (item.Protocol == ListenProtocolTypes.MQTT)
+            //                     {
+            //                         o.ListenLocalhost(item.Port, c => c.UseMqtt());
+            //                     }
+            //                     else
+            //                     {
+            //                         o.ListenLocalhost(item.Port);
+            //                     }
+            //                 }
+            //                 else
+            //                 {
+            //                     if (IPAddress.TryParse(item.Address, out var ip))
+            //                     {
+            //                         if (item.Protocol == ListenProtocolTypes.MQTT)
+            //                         {
+            //                             o.Listen(ip, item.Port, c => c.UseMqtt());
+            //                         }
+            //                         else
+            //                         {
+            //                             o.Listen(ip, item.Port);
+            //                         }
+            //                     }
+            //                 }
+            //             }
+            //         }
+            //         else
+            //         {
+            //             o.ListenAnyIP(1883, l => l.UseMqtt());
+            //             o.ListenAnyIP(5000);
+            //         }
+            //     });
+
+            webHost.UseStartup<Startup>();
+
+            return webHost;
+        }
+
+        public static ListenModel[] ReadListenSettings()
+        {
+            var builder = new ConfigurationBuilder()
+                    .AddJsonFile("appsettings.json")
+                    .AddEnvironmentVariables()
+                    .Build();
+
+            var listen = new List<ListenModel>();
+            builder.Bind("MQTTnetServer:Listen", listen);
+
+            return listen.ToArray();
+        }
+    }
+}

Source/MQTTnet.Server/Scripting/DataSharing/DataSharingService.cs

@@ -0,0 +1,47 @@
+using System;
+using System.Collections.Generic;
+using Microsoft.Extensions.Logging;
+
+namespace MQTTnet.Server.Scripting.DataSharing
+{
+    public class DataSharingService
+    {
+        private readonly Dictionary<string, object> _storage = new Dictionary<string, object>();
+        private readonly PythonScriptHostService _pythonScriptHostService;
+        private readonly ILogger<DataSharingService> _logger;
+
+        public DataSharingService(PythonScriptHostService pythonScriptHostService, ILogger<DataSharingService> logger)
+        {
+            _pythonScriptHostService = pythonScriptHostService ?? throw new ArgumentNullException(nameof(pythonScriptHostService));
+            _logger = logger ?? throw new ArgumentNullException(nameof(logger));
+        }
+
+        public void Configure()
+        {
+            _pythonScriptHostService.RegisterProxyObject("write_shared_data", new Action<string, object>(Write));
+            _pythonScriptHostService.RegisterProxyObject("read_shared_data", new Func<string, object, object>(Read));
+        }
+
+        public void Write(string key, object value)
+        {
+            lock (_storage)
+            {
+                _storage[key] = value;
+                _logger.LogInformation($"Shared data with key '{key}' updated.");
+            }
+        }
+
+        public object Read(string key, object defaultValue)
+        {
+            lock (_storage)
+            {
+                if (!_storage.TryGetValue(key, out var value))
+                {
+                    return defaultValue;
+                }
+
+                return value;
+            }
+        }
+    }
+}

Source/MQTTnet.Server/Scripting/PythonConvert.cs

@@ -0,0 +1,88 @@
+using System;
+using System.Collections;
+using System.Text;
+using IronPython.Runtime;
+
+namespace MQTTnet.Server.Scripting
+{
+    public static class PythonConvert
+    {
+        public static object ToPython(object value)
+        {
+            if (value is PythonDictionary)
+            {
+                return value;
+            }
+
+            if (value is string)
+            {
+                return value;
+            }
+
+            if (value is int)
+            {
+                return value;
+            }
+
+            if (value is float)
+            {
+                return value;
+            }
+
+            if (value is bool)
+            {
+                return value;
+            }
+
+            if (value is IDictionary dictionary)
+            {
+                var pythonDictionary = new PythonDictionary();
+                foreach (DictionaryEntry dictionaryEntry in dictionary)
+                {
+                    pythonDictionary.Add(dictionaryEntry.Key, ToPython(dictionaryEntry.Value));
+                }
+
+                return pythonDictionary;
+            }
+
+            if (value is IEnumerable enumerable)
+            {
+                var pythonList = new List();
+                foreach (var item in enumerable)
+                {
+                    pythonList.Add(ToPython(item));
+                }
+
+                return pythonList;
+            }
+
+            return value;
+        }
+
+        public static string Pythonfy(Enum value)
+        {
+            return Pythonfy(value.ToString());
+        }
+
+        public static string Pythonfy(string value)
+        {
+            var result = new StringBuilder();
+            foreach (var @char in value)
+            {
+                if (char.IsUpper(@char) && result.Length > 0)
+                {
+                    result.Append('_');
+                }
+
+                result.Append(char.ToLowerInvariant(@char));
+            }
+
+            return result.ToString();
+        }
+
+        public static TEnum ParseEnum<TEnum>(string value) where TEnum : Enum
+        {
+            return (TEnum)Enum.Parse(typeof(TEnum), value.Replace("_", string.Empty), true);
+        }
+    }
+}

Source/MQTTnet.Server/Scripting/PythonIOStream.cs

@@ -0,0 +1,66 @@
+using System;
+using System.IO;
+using System.Text;
+using Microsoft.Extensions.Logging;
+
+namespace MQTTnet.Server.Scripting
+{
+    public class PythonIOStream : Stream
+    {
+        private readonly ILogger _logger;
+        private readonly Encoding _encoder = Encoding.UTF8;
+
+        public PythonIOStream(ILogger<PythonIOStream> logger)
+        {
+            _logger = logger ?? throw new ArgumentNullException(nameof(logger));
+        }
+
+        public override void Flush()
+        {
+        }
+
+        public override int Read(byte[] buffer, int offset, int count)
+        {
+            throw new NotSupportedException();
+        }
+
+        public override long Seek(long offset, SeekOrigin origin)
+        {
+            throw new NotSupportedException();
+        }
+
+        public override void SetLength(long value)
+        {
+            throw new NotSupportedException();
+        }
+
+        public override void Write(byte[] buffer, int offset, int count)
+        {
+            if (buffer == null) throw new ArgumentNullException(nameof(buffer));
+
+            if (count == 0)
+            {
+                return;
+            }
+
+            var text = _encoder.GetString(buffer, offset, count);
+            if (text.Equals(Environment.NewLine))
+            {
+                return;
+            }
+
+            _logger.LogDebug(text);
+        }
+
+        public override bool CanRead { get; } = false;
+        public override bool CanSeek { get; } = false;
+        public override bool CanWrite { get; } = true;
+        public override long Length { get; } = 0L;
+
+        public override long Position
+        {
+            get => throw new NotSupportedException();
+            set => throw new NotSupportedException();
+        }
+    }
+}

Source/MQTTnet.Server/Scripting/PythonScriptHostService.cs

@@ -0,0 +1,130 @@
+using System;
+using System.Collections.Generic;
+using System.Dynamic;
+using System.IO;
+using System.Linq;
+using System.Text;
+using Microsoft.Extensions.Logging;
+using Microsoft.Scripting;
+using Microsoft.Scripting.Hosting;
+
+namespace MQTTnet.Server.Scripting
+{
+    public class PythonScriptHostService
+    {
+        private readonly IDictionary<string, object> _proxyObjects = new ExpandoObject();
+        private readonly List<PythonScriptInstance> _scriptInstances = new List<PythonScriptInstance>();
+        private readonly ILogger<PythonScriptHostService> _logger;
+        private readonly ScriptEngine _scriptEngine;
+        
+        public PythonScriptHostService(PythonIOStream pythonIOStream, ILogger<PythonScriptHostService> logger)
+        {
+            _logger = logger ?? throw new ArgumentNullException(nameof(logger));
+
+            _scriptEngine = IronPython.Hosting.Python.CreateEngine();
+            _scriptEngine.Runtime.IO.SetOutput(pythonIOStream, Encoding.UTF8);
+        }
+
+        public void Configure()
+        {
+            AddSearchPaths(_scriptEngine);
+
+            var scriptsDirectory = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "Scripts");
+            foreach (var filename in Directory.GetFiles(scriptsDirectory, "*.py", SearchOption.AllDirectories).OrderBy(file => file))
+            {
+                TryInitializeScript(filename);
+            }
+        }
+
+        public void RegisterProxyObject(string name, object action)
+        {
+            if (name == null) throw new ArgumentNullException(nameof(name));
+            if (action == null) throw new ArgumentNullException(nameof(action));
+
+            _proxyObjects.Add(name, action);
+        }
+
+        public void InvokeOptionalFunction(string name, object parameters)
+        {
+            if (name == null) throw new ArgumentNullException(nameof(name));
+
+            lock (_scriptInstances)
+            {
+                foreach (var pythonScriptInstance in _scriptInstances)
+                {
+                    try
+                    {
+                        pythonScriptInstance.InvokeOptionalFunction(name, parameters);
+                    }
+                    catch (Exception exception)
+                    {
+                        _logger.LogError(exception, $"Error while invoking function '{name}' at script '{pythonScriptInstance.Name}'.");
+                    }
+                }
+            }
+        }
+
+        private void TryInitializeScript(string filename)
+        {
+            try
+            {
+                var scriptName = new FileInfo(filename).Name;
+
+                _logger.LogTrace($"Initializing Python script '{scriptName}'...");
+                var code = File.ReadAllText(filename);
+
+                var scriptInstance = CreateScriptInstance(scriptName, code);
+                scriptInstance.InvokeOptionalFunction("initialize");
+
+                _scriptInstances.Add(scriptInstance);
+
+                _logger.LogInformation($"Initialized script '{scriptName}'.");
+            }
+            catch (Exception exception)
+            {
+                _logger.LogError(exception, $"Error while initializing script '{new FileInfo(filename).Name}'.");
+            }
+        }
+
+        private PythonScriptInstance CreateScriptInstance(string name, string code)
+        {
+            var scriptScope = _scriptEngine.CreateScope();
+
+            var source = scriptScope.Engine.CreateScriptSourceFromString(code, SourceCodeKind.File);
+            var compiledCode = source.Compile();
+
+            scriptScope.SetVariable("mqtt_net_server", _proxyObjects);
+            compiledCode.Execute(scriptScope);
+            
+            return new PythonScriptInstance(name, scriptScope);
+        }
+
+        private void AddSearchPaths(ScriptEngine scriptEngine)
+        {
+            var paths = new List<string>
+            {
+                Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "Lib"),
+                "/usr/lib/python2.7",
+                @"C:\Python27\Lib"
+            };
+            
+            AddSearchPaths(scriptEngine, paths);
+        }
+
+        private void AddSearchPaths(ScriptEngine scriptEngine, IEnumerable<string> paths)
+        {
+            var searchPaths = scriptEngine.GetSearchPaths();
+
+            foreach (var path in paths)
+            {
+                if (Directory.Exists(path))
+                {
+                    searchPaths.Add(path);
+                    _logger.LogInformation($"Added Python lib path: {path}");
+                }
+            }
+
+            scriptEngine.SetSearchPaths(searchPaths);
+        }
+    }
+}

Source/MQTTnet.Server/Scripting/PythonScriptInstance.cs

@@ -0,0 +1,57 @@
+using System;
+using IronPython.Runtime;
+using Microsoft.Scripting.Hosting;
+
+namespace MQTTnet.Server.Scripting
+{
+    public class PythonScriptInstance
+    {
+        private readonly ScriptScope _scriptScope;
+
+        public PythonScriptInstance(string name, ScriptScope scriptScope)
+        {
+            _scriptScope = scriptScope;
+
+            Name = name;
+        }
+
+        public string Name { get; }
+
+        public bool InvokeOptionalFunction(string name, params object[] parameters)
+        {
+            return InvokeOptionalFunction(name, parameters, out _);
+        }
+
+        public bool InvokeOptionalFunction(string name, object[] parameters, out object result)
+        {
+            if (name == null) throw new ArgumentNullException(nameof(name));
+
+            lock (_scriptScope)
+            {
+                if (!_scriptScope.Engine.Operations.TryGetMember(_scriptScope, name, out var member))
+                {
+                    result = null;
+                    return false;
+                }
+
+                if (!(member is PythonFunction function))
+                {
+                    throw new Exception($"Member '{name}' is no Python function.");
+                }
+
+                try
+                {
+                    result = _scriptScope.Engine.Operations.Invoke(function, parameters);
+                    return true;
+                }
+                catch (Exception exception)
+                {
+                    var details = _scriptScope.Engine.GetService<ExceptionOperations>().FormatException(exception);
+                    var message = $"Error while invoking function '{name}'. " + Environment.NewLine + details;
+
+                    throw new Exception(message, exception);
+                }
+            }
+        }
+    }
+}

Source/MQTTnet.Server/Scripts/00_sample.py

@@ -0,0 +1,74 @@
+import json
+
+
+def initialize():
+    """
+    This function is invoked after the script file has been loaded.
+    It will be executed only one time.
+    """
+
+    print("Hello World from Sample script.")
+   
+
+def on_validate_client_connection(context):
+    """
+    This function is invoked whenever a client wants to connect. It can be used to validate the connection.
+    """
+    
+    print(context)
+
+    mqtt_net_server.write_shared_data(context["client_id"], {"custom_value_1": 1, "custom_value_2": True})
+
+    return
+
+    if context["client_id"] != "test_client":
+        context["result"] = "connection_refused_not_authorized"
+        return
+
+    if context["username"] != "bud spencer":
+        context["result"] = "connection_refused_not_authorized"
+        return
+
+    if context["password"] != "secret":
+        context["result"] = "connection_refused_not_authorized"
+
+    print(context)
+
+
+def on_intercept_subscription(context):
+    """
+    This function is invoked whenever a client wants to subscribe to a topic.
+    """
+    
+    print("Client '{client_id}' want's to subscribe to topic '{topic}'.".format(client_id=context["client_id"], topic=context["topic"]))
+
+
+def on_intercept_application_message(context):
+    """
+    This function is invoked for every processed application message. It also allows modifying
+    the message or cancel processing at all.
+    """
+    client_id = context["client_id"]
+
+    if client_id != None:
+        shared_data = mqtt_net_server.read_shared_data(context["client_id"], {})
+        print(shared_data)
+
+    if context["topic"] == "topic_with_response":
+
+        json_payload = {
+            "hello": "world",
+            "x": 1,
+            "y": True,
+            "z": None
+        }
+
+        application_message = {
+            "retain": False,
+            "topic": "reply",
+            "payload": json.dumps(json_payload)
+            }
+
+        mqtt_net_server.publish(application_message)
+
+    print("Client '{client_id}' published topic '{topic}'.".format(client_id=context["client_id"], topic=context["topic"]))

Source/MQTTnet.Server/Scripts/readme.md

@@ -0,0 +1,19 @@
+This directory contains scripts which are loaded by the server and can be used to perform the following tasks.
+
+1. Validation of client connections via credentials, client IDs etc.
+2. Manipulation of every processed message.
+3. Validation of subscription attempts.
+4. Publishing of custom application messages.
+
+All scripts are loaded and _MQTTnet Server_ will invoke functions according to predefined naming conventions.
+If a function is implemented in multiple scripts the context will be moved throug all instances. This allows overriding of results or passing data to other (following) scripts.
+
+The Python starndard library ships with _MQTTnet Server_. But it is possible to add custom paths with Python libraries.
+
+```
+import sys
+sys.path.append(PATH_TO_LIBRARY)
+```
+
+* All scripts must have the file extension _.py_. 
+* All scripts are sorted alphabetically (A to Z) before being loaded and parsed.

Source/MQTTnet.Server/Startup.cs

@@ -0,0 +1,69 @@
+using Microsoft.AspNetCore.Builder;
+using Microsoft.AspNetCore.Hosting;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.Extensions.Configuration;
+using Microsoft.Extensions.DependencyInjection;
+using MQTTnet.AspNetCore;
+using MQTTnet.Server.Logging;
+using MQTTnet.Server.Mqtt;
+using MQTTnet.Server.Scripting;
+using MQTTnet.Server.Scripting.DataSharing;
+
+namespace MQTTnet.Server
+{
+    public class Startup
+    {
+        public Startup(IConfiguration configuration)
+        {
+            //var builder = new ConfigurationBuilder()
+            //    .AddJsonFile("appsettings.json")
+            //    .AddEnvironmentVariables();
+
+            //Configuration = builder.Build();
+        }
+        
+        public IConfigurationRoot Configuration { get; }
+
+        public void Configure(
+            IApplicationBuilder application, 
+            IHostingEnvironment environment, 
+            MqttServerService mqttServerService,
+            PythonScriptHostService pythonScriptHostService,
+            DataSharingService dataSharingService)
+        {
+            if (environment.IsDevelopment())
+            {
+                application.UseDeveloperExceptionPage();
+            }
+            else
+            {
+                application.UseHsts();
+            }
+
+            application.UseHttpsRedirection();
+            application.UseMvc();
+
+            dataSharingService.Configure();
+            pythonScriptHostService.Configure();
+            mqttServerService.Configure();
+        }
+
+        public void ConfigureServices(IServiceCollection services)
+        {
+            services.AddSingleton<MqttNetLoggerWrapper>();
+
+            services.AddSingleton<PythonIOStream>();
+            services.AddSingleton<PythonScriptHostService>();
+            services.AddSingleton<DataSharingService>();
+
+            services.AddSingleton<MqttWebSocketServerAdapter>();
+            services.AddSingleton<IMqttServerFactory, MqttFactory>();
+            services.AddSingleton<MqttServerService>();
+            services.AddSingleton<MqttConnectionValidator>();
+            services.AddSingleton<MqttSubscriptionInterceptor>();
+            services.AddSingleton<MqttApplicationMessageInterceptor>();
+
+            services.AddMvc().SetCompatibilityVersion(CompatibilityVersion.Version_2_2);
+        }
+    }
+}

Source/MQTTnet/MqttFactory.cs

@@ -10,6 +10,17 @@ namespace MQTTnet
 {
     public class MqttFactory : IMqttClientFactory, IMqttServerFactory
     {
+        private readonly IMqttNetLogger _logger;
+
+        public MqttFactory() : this(new MqttNetLogger())
+        {
+        }
+
+        public MqttFactory(IMqttNetLogger logger)
+        {
+            _logger = logger ?? throw new ArgumentNullException(nameof(logger));
+        }
+
         public IMqttClient CreateMqttClient()
         {
             return CreateMqttClient(new MqttNetLogger());
@@ -57,5 +68,12 @@ namespace MQTTnet
 
             return new MqttServer(adapters, logger.CreateChildLogger());
         }
+
+        public IMqttServer CreateMqttServer(IEnumerable<IMqttServerAdapter> adapters)
+        {
+            if (adapters == null) throw new ArgumentNullException(nameof(adapters));
+            
+            return new MqttServer(adapters, _logger.CreateChildLogger());
+        }
     }
 }

Source/MQTTnetServer/MQTTnetServer.xml

@@ -1,116 +0,0 @@
-<?xml version="1.0"?>
-<doc>
-    <assembly>
-        <name>MQTTnetServer</name>
-    </assembly>
-    <members>
-        <member name="T:MQTTnetServer.Program">
-            <summary>
-            Main Entry point
-            </summary>
-        </member>
-        <member name="M:MQTTnetServer.Program.Main(System.String[])">
-            <summary>
-            Main
-            </summary>
-            <param name="args"></param>
-        </member>
-        <member name="M:MQTTnetServer.Program.CreateWebHostBuilder(System.String[])">
-            <summary>
-            Configure and Start Kestrel
-            </summary>
-            <param name="args"></param>
-            <returns></returns>
-        </member>
-        <member name="M:MQTTnetServer.Program.ReadListenSettings">
-            <summary>
-            Read Application Settings
-            </summary>
-            <returns></returns>
-        </member>
-        <member name="T:MQTTnetServer.Settings.ListenModel">
-            <summary>
-            Listen Entry Settings Model
-            </summary>
-        </member>
-        <member name="M:MQTTnetServer.Settings.ListenModel.#ctor">
-            <summary>
-            Constructor
-            </summary>
-        </member>
-        <member name="P:MQTTnetServer.Settings.ListenModel.Address">
-            <summary>
-            Listen Address
-            </summary>
-        </member>
-        <member name="P:MQTTnetServer.Settings.ListenModel.Port">
-            <summary>
-            Listen Port
-            </summary>
-        </member>
-        <member name="P:MQTTnetServer.Settings.ListenModel.Protocol">
-            <summary>
-            Protocol Type
-            </summary>
-        </member>
-        <member name="T:MQTTnetServer.Settings.ListenProtocolTypes">
-            <summary>
-            Listen Protocol Types
-            </summary>
-        </member>
-        <member name="F:MQTTnetServer.Settings.ListenProtocolTypes.HTTP">
-            <summary>
-            HTTP
-            </summary>
-        </member>
-        <member name="F:MQTTnetServer.Settings.ListenProtocolTypes.HTTPS">
-            <summary>
-            HTTPS
-            </summary>
-        </member>
-        <member name="F:MQTTnetServer.Settings.ListenProtocolTypes.MQTT">
-            <summary>
-            MQTT
-            </summary>
-        </member>
-        <member name="T:MQTTnetServer.Settings.SettingsModel">
-            <summary>
-            Main Settings Model
-            </summary>
-        </member>
-        <member name="P:MQTTnetServer.Settings.SettingsModel.Listen">
-            <summary>
-            Listen Settings
-            </summary>
-        </member>
-        <member name="T:MQTTnetServer.Startup">
-            <summary>
-            Web App Startup
-            </summary>
-        </member>
-        <member name="M:MQTTnetServer.Startup.#ctor(Microsoft.Extensions.Configuration.IConfiguration)">
-            <summary>
-            Constructor
-            </summary>
-            <param name="configuration"></param>
-        </member>
-        <member name="P:MQTTnetServer.Startup.Configuration">
-            <summary>
-            Application Settings
-            </summary>
-        </member>
-        <member name="M:MQTTnetServer.Startup.Configure(Microsoft.AspNetCore.Builder.IApplicationBuilder,Microsoft.AspNetCore.Hosting.IHostingEnvironment)">
-            <summary>
-            This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
-            </summary>
-            <param name="app"></param>
-            <param name="env"></param>
-        </member>
-        <member name="M:MQTTnetServer.Startup.ConfigureServices(Microsoft.Extensions.DependencyInjection.IServiceCollection)">
-            <summary>
-            This method gets called by the runtime. Use this method to add services to the container. 
-            </summary>
-            <param name="services"></param>
-        </member>
-    </members>
-</doc>

Source/MQTTnetServer/Program.cs

@@ -1,118 +0,0 @@
-using Microsoft.AspNetCore;
-using Microsoft.AspNetCore.Hosting;
-using Microsoft.Extensions.Configuration;
-using MQTTnet.AspNetCore;
-using MQTTnetServer.Settings;
-using System;
-using System.Collections.Generic;
-using System.IO;
-using System.Net;
-
-namespace MQTTnetServer
-{
-    /// <summary>
-    /// Main Entry point
-    /// </summary>
-    public class Program
-    {
-        /// <summary>
-        /// Main
-        /// </summary>
-        /// <param name="args"></param>
-        public static void Main(string[] args)
-        {
-            try
-            {
-                CreateWebHostBuilder(args).Build().Run();
-            }
-            catch (FileNotFoundException e)
-            {
-                Console.WriteLine("Could not find application settings file in: " + e.FileName);
-                return;
-            }
-        }
-
-        /// <summary>
-        /// Configure and Start Kestrel
-        /// </summary>
-        /// <param name="args"></param>
-        /// <returns></returns>
-        public static IWebHostBuilder CreateWebHostBuilder(string[] args)
-        {
-            var webHost = WebHost.CreateDefaultBuilder(args);
-            var listen = ReadListenSettings();
-            webHost
-                 .UseKestrel(o =>
-                 {
-                     if (listen?.Length > 0)
-                     {
-                         foreach (var item in listen)
-                         {
-                             if (item.Address?.Trim() == "*")
-                             {
-                                 if (item.Protocol == ListenProtocolTypes.MQTT)
-                                 {
-                                     o.ListenAnyIP(item.Port, c => c.UseMqtt());
-                                 }
-                                 else
-                                 {
-                                     o.ListenAnyIP(item.Port);
-                                 }
-                             }
-                             else if (item.Address?.Trim() == "localhost")
-                             {
-                                 if (item.Protocol == ListenProtocolTypes.MQTT)
-                                 {
-                                     o.ListenLocalhost(item.Port, c => c.UseMqtt());
-                                 }
-                                 else
-                                 {
-                                     o.ListenLocalhost(item.Port);
-                                 }
-                             }
-                             else
-                             {
-                                 if (IPAddress.TryParse(item.Address, out var ip))
-                                 {
-                                     if (item.Protocol == ListenProtocolTypes.MQTT)
-                                     {
-                                         o.Listen(ip, item.Port, c => c.UseMqtt());
-                                     }
-                                     else
-                                     {
-                                         o.Listen(ip, item.Port);
-                                     }
-                                 }
-                             }
-                         }
-                     }
-                     else
-                     {
-                         o.ListenAnyIP(1883, l => l.UseMqtt());
-                         o.ListenAnyIP(5000);
-                     }
-                 });
-
-            webHost.UseStartup<Startup>();
-
-            return webHost;
-        }
-
-        /// <summary>
-        /// Read Application Settings
-        /// </summary>
-        /// <returns></returns>
-        public static ListenModel[] ReadListenSettings()
-        {
-            var builder = new ConfigurationBuilder()
-                    .AddJsonFile("appsettings.json")
-                    .AddEnvironmentVariables()
-                    .Build();
-
-            var listen = new List<ListenModel>();
-            builder.Bind("MQTTnetServer:Listen", listen);
-
-            return listen.ToArray();
-        }
-    }
-}

Source/MQTTnetServer/Startup.cs

@@ -1,61 +0,0 @@
-using Microsoft.AspNetCore.Builder;
-using Microsoft.AspNetCore.Hosting;
-using Microsoft.AspNetCore.Mvc;
-using Microsoft.Extensions.Configuration;
-using Microsoft.Extensions.DependencyInjection;
-
-namespace MQTTnetServer
-{
-    /// <summary>
-    /// Web App Startup
-    /// </summary>
-    public class Startup
-    {
-        /// <summary>
-        /// Constructor
-        /// </summary>
-        /// <param name="configuration"></param>
-        public Startup(IConfiguration configuration)
-        {
-            var builder = new ConfigurationBuilder()
-                .AddJsonFile("appsettings.json")
-                .AddEnvironmentVariables();
-            Configuration = builder.Build();
-        }
-
-        /// <summary>
-        /// Application Settings
-        /// </summary>
-        public IConfigurationRoot Configuration { get; }
-
-        /// <summary>
-        /// This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
-        /// </summary>
-        /// <param name="app"></param>
-        /// <param name="env"></param>
-        public void Configure(IApplicationBuilder app, IHostingEnvironment env)
-        {
-            if (env.IsDevelopment())
-            {
-                app.UseDeveloperExceptionPage();
-            }
-            else
-            {
-                // The default HSTS value is 30 days. You may want to change this for production scenarios, see https://aka.ms/aspnetcore-hsts.
-                app.UseHsts();
-            }
-
-            app.UseHttpsRedirection();
-            app.UseMvc();
-        }
-
-        /// <summary>
-        /// This method gets called by the runtime. Use this method to add services to the container. 
-        /// </summary>
-        /// <param name="services"></param>
-        public void ConfigureServices(IServiceCollection services)
-        {
-            services.AddMvc().SetCompatibilityVersion(CompatibilityVersion.Version_2_2);
-        }
-    }
-}