app.config

<?xml version="1.0" encoding="utf-8"?>
<configuration>
  <configSections>
    <section name="nlog" type="NLog.Config.ConfigSectionHandler, NLog"/>
  </configSections>

  <appSettings>
    <add key="port" value="27040"/>

    <!-- Либо каталог -->
    <!--<add key="folder" value="www"/>-->

    <!-- Либо список файлов -->
    <add key="file_1" value="E:/Develop/HTTPServer/www/proxies.txt"/>
    <add key="file_2" value="E:/Develop/HTTPServer/www/index.html"/>
    <add key="file_3" value="E:/Develop/HTTPServer/www/favicon.ico"/>
  </appSettings>


  <nlog throwExceptions="true" internalLogFile="NlogErr.txt" 
        internalLogLevel="Error" xmlns="http://www.nlog-project.org/schemas/NLog.xsd" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
    <variable name="logFile" value="${basedir}/logs/${shortdate}"/>
    <targets async="true">
      <target name="eventLog" xsi:type="File" fileName="${logFile}.txt" layout="${longdate}|${level:upperCase=true}|${logger}|${message} ${exception:format=message,stacktrace:separator=*}"/>
      <target name="console" xsi:type="ColoredConsole" layout="${longdate}|${level:upperCase=true}|${message}"/>
    </targets>

    <rules>
      <logger name="*" minlevel="Warn" writeTo="eventLog"/>
      <logger name="*" minlevel="Trace" writeTo="console"/>
    </rules>
  </nlog>
  <startup>
    <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5"/>
  </startup>
</configuration>