Implementing basic DNS Client

SMTPServer/Logging/Logging.cs

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+using System;
+
+namespace Logging
+{
+    public class Logging
+    {
+        private static LoggingType[] _ActiveLoggingTypes { get; set; }
+
+        public enum LoggingType
+        {
+            TRACE,
+            ERROR,
+            DEBUG,
+            WARNING,
+            INFO,
+            ALL
+        }
+
+
+
+        private static void AddLogMessage(LoggingType messagetype, string message)
+        {
+            if(CheckLoggingType(messagetype)) PrintToConsole(messagetype, message);
+        }
+
+        private static bool CheckLoggingType(LoggingType lt){
+            if (_ActiveLoggingTypes.Length < 1) {
+                _ActiveLoggingTypes = new LoggingType[1];
+                _ActiveLoggingTypes[0] = LoggingType.ALL;
+            }
+            bool found = false;
+            foreach(LoggingType l in _ActiveLoggingTypes)
+            {
+                if (l == lt || l == LoggingType.ALL)
+                {
+                    found = true;
+                    break;
+                }
+            }
+
+
+            return found;
+        }
+
+        private static void PrintToConsole(LoggingType lt, string message)
+        {
+            Console.WriteLine("[" + lt.ToString() + "]" +  message);
+        }
+    }
+}

SMTPServer/Logging/Logging.csproj

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+<Project ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" />
+  <PropertyGroup Label="Configuration">
+    <NoWarn>1701;1702;1705;1006</NoWarn>
+  </PropertyGroup>
+  <PropertyGroup>
+    <TargetFramework>netstandard1.4</TargetFramework>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="**\*.cs" />
+    <EmbeddedResource Include="**\*.resx" />
+  </ItemGroup>
+  <ItemGroup>
+    <PackageReference Include="NETStandard.Library">
+      <Version>1.6</Version>
+    </PackageReference>
+    <PackageReference Include="Microsoft.NET.Sdk">
+      <Version>1.0.0-alpha-20161104-2</Version>
+      <PrivateAssets>All</PrivateAssets>
+    </PackageReference>
+  </ItemGroup>
+  <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
+</Project>