Merge branch 'master' of https://github.com/ogoun/Zero

ZeroLevel.EventServer/EventRepository.cs

@@ -0,0 +1,29 @@
+using System;
+using System.Collections.Generic;
+using System.Data.SQLite;
+using System.Text;
+using System.Threading;
+using ZeroLevel.SqLite;
+
+namespace ZeroLevel.EventServer
+{
+    public class EventRepository
+        :BaseSqLiteDB
+    {
+        private readonly SQLiteConnection _db;
+        private readonly ReaderWriterLockSlim _rwLock = new ReaderWriterLockSlim();
+        private readonly string _tableName;
+
+        public EventRepository()
+        {
+            _tableName = "events";
+
+            var path = PrepareDb($"{_tableName}.db");
+            _db = new SQLiteConnection($"Data Source={path};Version=3;");
+            _db.Open();
+
+            Execute($"CREATE TABLE IF NOT EXISTS {_tableName} (id INTEGER PRIMARY KEY AUTOINCREMENT, key TEXT, body BLOB)", _db);
+            Execute($"CREATE INDEX IF NOT EXISTS key_index ON {_tableName} (key)", _db);
+        }
+    }
+}

ZeroLevel.EventServer/EventService.cs

@@ -0,0 +1,61 @@
+using ZeroLevel.Network;
+using ZeroLevel.Services.Applications;
+
+namespace ZeroLevel.EventServer
+{
+    public class EventService
+        : BaseZeroService
+    {
+        public EventService()
+        { 
+        }
+
+        protected override void StartAction()
+        {
+            var host = UseHost();
+            this.AutoregisterInboxes(host);
+            host.OnConnect += Host_OnConnect;
+            host.OnDisconnect += Host_OnDisconnect;
+        }
+
+        private void Host_OnDisconnect(ISocketClient obj)
+        {
+            Log.Info($"Client '{obj.Endpoint.Address}:{obj.Endpoint.Port}' disconnected");
+        }
+
+        private void Host_OnConnect(IClient obj)
+        {
+            Log.Info($"Client '{obj.Socket.Endpoint.Address}:{obj.Socket.Endpoint.Port}' connected");
+        }
+
+        protected override void StopAction()
+        {
+        }
+
+        #region Inboxes
+        [ExchangeReplier("onetime")]
+        public long OneTimeHandler(ISocketClient client, OneTimeEvent e)
+        {
+            return 0;
+        }
+
+        [ExchangeReplier("periodic")]
+        public long PeriodicHandler(ISocketClient client, PeriodicTimeEvent e)
+        {
+            return 0;
+        }
+
+        [ExchangeReplier("eventtrigger")]
+        public long AfterEventHandler(ISocketClient client, EventAfterEvent e)
+        {
+            return 0;
+        }
+
+        [ExchangeReplier("eventstrigger")]
+        public long AfterEventsHandler(ISocketClient client, EventAfterEvents e)
+        {
+            return 0;
+        }
+        #endregion
+    }
+}

ZeroLevel.EventServer/Model/BaseEvent.cs

@@ -0,0 +1,8 @@
+namespace ZeroLevel.EventServer.Model
+{
+    public abstract class BaseEvent
+    {
+        public string ServiceKey { get; set; }
+        public string Inbox { get; set; }
+    }
+}

ZeroLevel.EventServer/Model/Condition.cs

@@ -0,0 +1,23 @@
+namespace ZeroLevel.EventServer.Model
+{
+    public enum Condition
+         : int
+    {
+        /// <summary>
+        /// В любом случае
+        /// </summary>
+        None = 0,
+        /// <summary>
+        /// Если хотя бы одно событие успешно обработано
+        /// </summary>
+        OneSuccessfull = 1,
+        /// <summary>
+        /// Если обработаны все события
+        /// </summary>
+        AllSuccessfull = 2,
+        /// <summary>
+        /// Если хотя бы одно событие не обработано
+        /// </summary>
+        AnyFault = 3
+    }
+}

ZeroLevel.EventServer/Model/EventAfterEvent.cs

@@ -0,0 +1,10 @@
+namespace ZeroLevel.EventServer.Model
+{
+    public class EventAfterEvent
+        : BaseEvent
+    {
+        public long EventId { get; set; }
+
+        public Condition Confition { get; set; }
+    }
+}

ZeroLevel.EventServer/Model/EventAfterEvents.cs

@@ -0,0 +1,12 @@
+using System.Collections.Generic;
+
+namespace ZeroLevel.EventServer.Model
+{
+    public class EventAfterEvents
+        : BaseEvent
+    {
+        public IEnumerable<long> EventIds { get; set; }
+
+        public Condition Confition { get; set; }
+    }
+}

ZeroLevel.EventServer/Model/EventInfoRecord.cs

@@ -0,0 +1,13 @@
+namespace ZeroLevel.EventServer
+{
+    public class EventInfoRecord
+    {
+        public long EventId { get; set; }
+
+        public string ServiceKey { get; set; }
+        // OR
+        public string ServiceEndpoint { get; set; }
+
+        public string Inbox { get; set; }
+    }
+}

ZeroLevel.EventServer/Model/EventResult.cs

@@ -0,0 +1,10 @@
+namespace ZeroLevel.EventServer.Model
+{
+    public class EventResult
+    {
+        public long EventId;
+        public EventResultState State;
+        public long StartTimestamp;
+        public long EndTimestamp;
+    }
+}

ZeroLevel.EventServer/Model/EventResultState.cs

@@ -0,0 +1,9 @@
+namespace ZeroLevel.EventServer.Model
+{
+    public enum EventResultState
+    {
+        InProgress,
+        Success,
+        Unsuccess
+    }
+}

ZeroLevel.EventServer/Model/EventType.cs

@@ -0,0 +1,11 @@
+namespace ZeroLevel.EventServer.Model
+{
+    public enum EventType
+        : int
+    {
+        OneType = 0,
+        Periodic = 1,
+        EventTrigger = 2,
+        EventsTrigger = 3
+    }
+}

ZeroLevel.EventServer/Model/OneTimeEvent.cs

@@ -0,0 +1,10 @@
+using System;
+
+namespace ZeroLevel.EventServer.Model
+{
+    public class OneTimeEvent
+        : BaseEvent
+    {
+        public TimeSpan Period { get; set; }
+    }
+}

ZeroLevel.EventServer/Model/PeriodicTimeEvent.cs

@@ -0,0 +1,10 @@
+using System;
+
+namespace ZeroLevel.EventServer.Model
+{
+    public class PeriodicTimeEvent
+        : BaseEvent
+    {
+        public TimeSpan Period { get; set; }
+    }
+}

ZeroLevel.EventServer/Program.cs

@@ -0,0 +1,15 @@
+namespace ZeroLevel.EventServer
+{
+    class Program
+    {
+        static void Main(string[] args)
+        {
+            Bootstrap.Startup<EventService>(args, configuration: () => Configuration.ReadOrEmptySetFromIniFile("config.ini"))
+                .EnableConsoleLog()
+                .UseDiscovery()
+                .Run()
+                .WaitWhileStatus(ZeroServiceStatus.Running);
+            Bootstrap.Shutdown();
+        }
+    }
+}

ZeroLevel.EventServer/ZeroLevel.EventServer.csproj

@@ -0,0 +1,23 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>netcoreapp3.1</TargetFramework>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="System.Data.SQLite.Core" Version="1.0.112" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\ZeroLevel.SqLite\ZeroLevel.SqLite.csproj" />
+    <ProjectReference Include="..\ZeroLevel\ZeroLevel.csproj" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <None Update="config.ini">
+      <CopyToOutputDirectory>Always</CopyToOutputDirectory>
+    </None>
+  </ItemGroup>
+
+</Project>

ZeroLevel.EventServer/config.ini

@@ -0,0 +1 @@
+discovery=localhost:9030

ZeroLevel.sln

@@ -39,7 +39,9 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "ZeroLevel.Logger", "ZeroLev
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "ZeroLevel.WPF", "ZeroLevel.WPF\ZeroLevel.WPF.csproj", "{0D70D688-1E21-4E9D-AA49-4D255DF27D8D}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "ZeroLevel.SqLite", "ZeroLevel.SqLite\ZeroLevel.SqLite.csproj", "{5B545DD6-8573-4CDD-B32D-9B0AA2AC2F9A}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "ZeroLevel.SqLite", "ZeroLevel.SqLite\ZeroLevel.SqLite.csproj", "{5B545DD6-8573-4CDD-B32D-9B0AA2AC2F9A}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "ZeroLevel.EventServer", "ZeroLevel.EventServer\ZeroLevel.EventServer.csproj", "{F8116106-48FD-4F1B-A1D2-63FE81DAFD8E}"
 EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
@@ -255,6 +257,18 @@ Global
 		{5B545DD6-8573-4CDD-B32D-9B0AA2AC2F9A}.Release|x64.Build.0 = Release|Any CPU
 		{5B545DD6-8573-4CDD-B32D-9B0AA2AC2F9A}.Release|x86.ActiveCfg = Release|Any CPU
 		{5B545DD6-8573-4CDD-B32D-9B0AA2AC2F9A}.Release|x86.Build.0 = Release|Any CPU
+		{F8116106-48FD-4F1B-A1D2-63FE81DAFD8E}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{F8116106-48FD-4F1B-A1D2-63FE81DAFD8E}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{F8116106-48FD-4F1B-A1D2-63FE81DAFD8E}.Debug|x64.ActiveCfg = Debug|Any CPU
+		{F8116106-48FD-4F1B-A1D2-63FE81DAFD8E}.Debug|x64.Build.0 = Debug|Any CPU
+		{F8116106-48FD-4F1B-A1D2-63FE81DAFD8E}.Debug|x86.ActiveCfg = Debug|Any CPU
+		{F8116106-48FD-4F1B-A1D2-63FE81DAFD8E}.Debug|x86.Build.0 = Debug|Any CPU
+		{F8116106-48FD-4F1B-A1D2-63FE81DAFD8E}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{F8116106-48FD-4F1B-A1D2-63FE81DAFD8E}.Release|Any CPU.Build.0 = Release|Any CPU
+		{F8116106-48FD-4F1B-A1D2-63FE81DAFD8E}.Release|x64.ActiveCfg = Release|Any CPU
+		{F8116106-48FD-4F1B-A1D2-63FE81DAFD8E}.Release|x64.Build.0 = Release|Any CPU
+		{F8116106-48FD-4F1B-A1D2-63FE81DAFD8E}.Release|x86.ActiveCfg = Release|Any CPU
+		{F8116106-48FD-4F1B-A1D2-63FE81DAFD8E}.Release|x86.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE

ZeroLevel/Services/BaseZeroService.cs

@@ -133,34 +133,37 @@ namespace ZeroLevel.Services.Applications
 
         #region Network       
 
-        public void UseDiscovery()
+        public bool UseDiscovery()
         {
             if (_state == ZeroServiceStatus.Running
                || _state == ZeroServiceStatus.Initialized)
             {
                 ReadServiceInfo();
-                _exhange.UseDiscovery();
+                return _exhange.UseDiscovery();
             }
+            return false;
         }
 
-        public void UseDiscovery(string endpoint)
+        public bool UseDiscovery(string endpoint)
         {
             if (_state == ZeroServiceStatus.Running
                || _state == ZeroServiceStatus.Initialized)
             {
                 ReadServiceInfo();
-                _exhange.UseDiscovery(endpoint);
+                return _exhange.UseDiscovery(endpoint);
             }
+            return false;
         }
 
-        public void UseDiscovery(IPEndPoint endpoint)
+        public bool UseDiscovery(IPEndPoint endpoint)
         {
             if (_state == ZeroServiceStatus.Running
                || _state == ZeroServiceStatus.Initialized)
             {
                 ReadServiceInfo();
-                _exhange.UseDiscovery(endpoint);
+                return _exhange.UseDiscovery(endpoint);
             }
+            return false;
         }
 
         public IRouter UseHost()

ZeroLevel/Services/Config/Configuration.cs

@@ -2,8 +2,6 @@
 using System.Collections.Concurrent;
 using System.Collections.Generic;
 using System.IO;
-using System.Linq;
-using System.Reflection;
 using ZeroLevel.Services.Config;
 using ZeroLevel.Services.Config.Implementation;
 using ZeroLevel.Services.Reflection;
@@ -137,52 +135,257 @@ namespace ZeroLevel
         /// Creating a configuration from the AppSettings section of the app.config or web.config file
         /// </summary>
         /// <returns>Configuration</returns>
-        public static IConfiguration ReadFromApplicationConfig() { return new ApplicationConfigReader().ReadConfiguration(); }
+        public static IConfiguration ReadFromApplicationConfig() 
+        {
+            try
+            {
+                return new ApplicationConfigReader().ReadConfiguration();
+            }
+            catch (Exception ex)
+            {
+                Log.Error(ex, $"[Configuration.ReadFromApplicationConfig] Can't read app.config file");
+                throw;
+            }
+        }
+        public static IConfiguration ReadOrEmptyFromApplicationConfig()
+        {
+            try
+            {
+                return new ApplicationConfigReader().ReadConfiguration();
+            }
+            catch (Exception ex)
+            {
+                Log.Error(ex, $"[Configuration.ReadOrEmptyFromApplicationConfig] Can't read app.config file");
+            }
+            return _empty;
+        }
 
         /// <summary>
         /// Creating a configuration from the AppSettings section of the app.config file or web.config, is supplemented by the 'ConnectionStrings' section
         /// </summary>
         /// <returns>Configuration</returns>
-        public static IConfigurationSet ReadSetFromApplicationConfig() { return new ApplicationConfigReader().ReadConfigurationSet(); }
+        public static IConfigurationSet ReadSetFromApplicationConfig() 
+        { 
+            try
+            {
+                return new ApplicationConfigReader().ReadConfigurationSet();
+            }
+            catch (Exception ex)
+            {
+                Log.Error(ex, $"[Configuration.ReadSetFromApplicationConfig] Can't read app.config file");
+                throw;
+            }
+        }
+        public static IConfigurationSet ReadOrEmptySetFromApplicationConfig()
+        {
+            try
+            {
+                return new ApplicationConfigReader().ReadConfigurationSet();
+            }
+            catch (Exception ex)
+            {
+                Log.Error(ex, $"[Configuration.ReadOrEmptySetFromApplicationConfig] Can't read app.config file");
+            }
+            return _emptySet;
+        }
 
         /// <summary>
         /// Creating a configuration from the AppSettings section of the app.config or web.config file
         /// </summary>
         /// <returns>Configuration</returns>
-        public static IConfiguration ReadFromApplicationConfig(string configFilePath) { return new ApplicationConfigReader(configFilePath).ReadConfiguration(); }
+        public static IConfiguration ReadFromApplicationConfig(string configFilePath) 
+        {
+            try
+            {
+                return new ApplicationConfigReader(configFilePath).ReadConfiguration();
+            }
+            catch (Exception ex)
+            {
+                Log.Error(ex, $"[Configuration.ReadFromApplicationConfig] Can't read config file '{configFilePath}'");
+                throw;
+            }
+        }
+        public static IConfiguration ReadOrEmptyFromApplicationConfig(string configFilePath)
+        {
+            try
+            {
+                return new ApplicationConfigReader(configFilePath).ReadConfiguration();
+            }
+            catch (Exception ex)
+            {
+                Log.Error(ex, $"[Configuration.ReadOrEmptyFromApplicationConfig] Can't read config file '{configFilePath}'");
+            }
+            return _empty;
+        }
 
         /// <summary>
         /// Creating a configuration from the AppSettings section of the app.config file or web.config, is supplemented by the 'ConnectionStrings' section
         /// </summary>
         /// <returns>Configuration</returns>
-        public static IConfigurationSet ReadSetFromApplicationConfig(string configFilePath) { return new ApplicationConfigReader(configFilePath).ReadConfigurationSet(); }
+        public static IConfigurationSet ReadSetFromApplicationConfig(string configFilePath) 
+        {
+            try
+            {
+                return new ApplicationConfigReader(configFilePath).ReadConfigurationSet();
+            }
+            catch (Exception ex)
+            {
+                Log.Error(ex, $"[Configuration.ReadSetFromApplicationConfig] Can't read config file '{configFilePath}'");
+                throw;
+            }
+        }
+        public static IConfigurationSet ReadOrEmptySetFromApplicationConfig(string configFilePath)
+        {
+            try
+            {
+                return new ApplicationConfigReader(configFilePath).ReadConfigurationSet();
+            }
+            catch (Exception ex)
+            {
+                Log.Error(ex, $"[Configuration.ReadOrEmptySetFromApplicationConfig] Can't read config file '{configFilePath}'");
+            }
+            return _emptySet;
+        }
 
         /// <summary>
         /// Create configuration from ini file
         /// </summary>
         /// <param name="path">Path to the ini file</param>
         /// <returns>Configuration</returns>
-        public static IConfiguration ReadFromIniFile(string path) { return new IniFileReader(path).ReadConfiguration(); }
+        public static IConfiguration ReadFromIniFile(string path) 
+        {
+            try
+            {
+                return new IniFileReader(path).ReadConfiguration();
+            }
+            catch (Exception ex)
+            {
+                Log.Error(ex, $"[Configuration.ReadFromIniFile] Can't read config file '{path}'");
+                throw;
+            }
+        }
+        public static IConfiguration ReadOrEmptyFromIniFile(string path)
+        {
+            try
+            {
+                return new IniFileReader(path).ReadConfiguration();
+            }
+            catch (Exception ex)
+            {
+                Log.Error(ex, $"[Configuration.ReadOrEmptyFromIniFile] Can't read config file '{path}'");
+            }
+            return _empty;
+        }
 
         /// <summary>
         /// Creating a configuration from an ini file, including sections
         /// </summary>
         /// <param name="path">Path to the ini file</param>
         /// <returns>Configuration</returns>
-        public static IConfigurationSet ReadSetFromIniFile(string path) { return new IniFileReader(path).ReadConfigurationSet(); }
+        public static IConfigurationSet ReadSetFromIniFile(string path) 
+        {
+            try
+            {
+                return new IniFileReader(path).ReadConfigurationSet();
+            }
+            catch (Exception ex)
+            {
+                Log.Error(ex, $"[Configuration.ReadSetFromIniFile] Can't read config file '{path}'");
+                throw;
+            }
+        }
+        public static IConfigurationSet ReadOrEmptySetFromIniFile(string path)
+        {
+            try
+            {
+                return new IniFileReader(path).ReadConfigurationSet();
+            }
+            catch (Exception ex)
+            {
+                Log.Error(ex, $"[Configuration.ReadOrEmptySetFromIniFile] Can't read config file '{path}'");
+            }
+            return _emptySet;
+        }
 
         /// <summary>
         /// Creating configuration from command line parameters
         /// </summary>
         /// <param name="args">Command line parameters</param>
         /// <returns>Configuration</returns>
-        public static IConfiguration ReadFromCommandLine(string[] args) { return new CommandLineReader(args).ReadConfiguration(); }
+        public static IConfiguration ReadFromCommandLine(string[] args) 
+        {
+            try
+            {
+                return new CommandLineReader(args).ReadConfiguration();
+            }
+            catch (Exception ex)
+            {
+                Log.Error(ex, $"[Configuration.ReadFromCommandLine] Can't read command line args");
+                throw;
+            }
+        }
+        public static IConfiguration ReadOrEmptyFromCommandLine(string[] args)
+        {
+            try
+            {
+                return new CommandLineReader(args).ReadConfiguration();
+            }
+            catch (Exception ex)
+            {
+                Log.Error(ex, $"[Configuration.ReadOrEmptyFromCommandLine] Can't read command line args");
+            }
+            return _empty;
+        }
 
-        public static IConfigurationSet ReadBinary(IBinaryReader reader)
+        public static IConfiguration ReadFromBinaryReader(IBinaryReader reader)
         {
-            return reader.Read<BaseConfigurationSet>();
+            try
+            {
+                return reader.Read<BaseConfiguration>();
+            }
+            catch (Exception ex)
+            {
+                Log.Error(ex, $"[Configuration.ReadFromBinaryReader] Can't read config from binaryReader");
+                throw;
+            }
+        }
+        public static IConfiguration ReadOrEmptyFromBinaryReader(IBinaryReader reader)
+        {
+            try
+            {
+                return reader.Read<BaseConfiguration>();
+            }
+            catch (Exception ex)
+            {
+                Log.Error(ex, $"[Configuration.ReadOrEmptyFromBinaryReader] Can't read config from binaryReader");
+            }
+            return _empty;
         }
 
+        public static IConfigurationSet ReadSetFromBinaryReader(IBinaryReader reader)
+        {
+            try
+            {
+                return reader.Read<BaseConfigurationSet>();
+            }
+            catch (Exception ex)
+            {
+                Log.Error(ex, $"[Configuration.ReadSetFromBinaryReader] Can't read config from binaryReader");
+                throw;
+            }
+        }
+        public static IConfigurationSet ReadSetOrEmptyFromBinaryReader(IBinaryReader reader)
+        {
+            try
+            {
+                return reader.Read<BaseConfigurationSet>();
+            }
+            catch (Exception ex)
+            {
+                Log.Error(ex, $"[Configuration.ReadSetOrEmptyFromBinaryReader] Can't read config from binaryReader");
+            }
+            return _emptySet;
+        }
         #endregion Read configuration
 
         #region Write configuration

ZeroLevel/Services/IZeroService.cs

@@ -15,10 +15,10 @@ namespace ZeroLevel
 
         ZeroServiceInfo ServiceInfo { get; }
 
-        void UseDiscovery();
-        void UseDiscovery(string url);
-        void UseDiscovery(IPEndPoint endpoint);
-
+        bool UseDiscovery();
+        bool UseDiscovery(string url);
+        bool UseDiscovery(IPEndPoint endpoint);
+        
         IRouter UseHost();
         IRouter UseHost(int port);
         IRouter UseHost(IPEndPoint endpoint);

ZeroLevel/Services/Network/Contracts/IExchange.cs

@@ -6,9 +6,9 @@ namespace ZeroLevel.Network
     public interface IExchange
         : IClientSet, IDisposable
     {
-        void UseDiscovery();
-        void UseDiscovery(string endpoint);
-        void UseDiscovery(IPEndPoint endpoint);
+        bool UseDiscovery();
+        bool UseDiscovery(string endpoint);
+        bool UseDiscovery(IPEndPoint endpoint);
 
         IRouter UseHost();
         IRouter UseHost(int port);

ZeroLevel/Services/Network/Exchange.cs

@@ -431,45 +431,31 @@ namespace ZeroLevel.Network
         private static TimeSpan _update_discovery_table_period = TimeSpan.FromSeconds(15);
         private static TimeSpan _register_in_discovery_table_period = TimeSpan.FromSeconds(15);
 
-        public void UseDiscovery()
+        private bool _UseDiscovery(Func<IPEndPoint> epf)
         {
+            if (epf == null) return false;
             try
             {
-                var discoveryEndpoint = Configuration.Default.First("discovery");
-                _user_aliases.Set(BaseSocket.DISCOVERY_ALIAS, NetUtils.CreateIPEndPoint(discoveryEndpoint));
+                var ep = epf.Invoke();
+                _user_aliases.Set(BaseSocket.DISCOVERY_ALIAS, ep);
                 RestartDiscoveryTasks();
+                return true;
             }
             catch (Exception ex)
             {
-                Log.Error(ex, "[Exchange.UseDiscovery]");
+                Log.Error(ex, $"[Exchange.UseDiscovery]");
             }
+            return false;
         }
 
-        public void UseDiscovery(string discoveryEndpoint)
-        {
-            try
-            {
-                _user_aliases.Set(BaseSocket.DISCOVERY_ALIAS, NetUtils.CreateIPEndPoint(discoveryEndpoint));
-                RestartDiscoveryTasks();
-            }
-            catch (Exception ex)
-            {
-                Log.Error(ex, "[Exchange.UseDiscovery]");
-            }
-        }
+        public bool UseDiscovery() => 
+            _UseDiscovery(() => NetUtils.CreateIPEndPoint(Configuration.Default.First("discovery")));
 
-        public void UseDiscovery(IPEndPoint discoveryEndpoint)
-        {
-            try
-            {
-                _user_aliases.Set(BaseSocket.DISCOVERY_ALIAS, discoveryEndpoint);
-                RestartDiscoveryTasks();
-            }
-            catch (Exception ex)
-            {
-                Log.Error(ex, "[Exchange.UseDiscovery]");
-            }
-        }
+        public bool UseDiscovery(string discoveryEndpoint) =>
+            _UseDiscovery(() => NetUtils.CreateIPEndPoint(discoveryEndpoint));
+
+        public bool UseDiscovery(IPEndPoint discoveryEndpoint) =>
+            _UseDiscovery(() => discoveryEndpoint);
 
         private void RestartDiscoveryTasks()
         {