web.config

<?xml version="1.0" encoding="UTF-8"?>
<configuration>
    <system.webServer>
    <handlers>
      <add name="iisnode" path="app.js" verb="*" modules="iisnode" />
    </handlers>
    <iisnode node_env="%node_env%" asyncCompletionThreadCount="0" nodeProcessCountPerApplication="1" interceptor="&quot;%programfiles%\iisnode\interceptor.js&quot;" maxConcurrentRequestsPerProcess="1024" maxNamedPipeConnectionRetry="100" namedPipeConnectionRetryDelay="250" maxNamedPipeConnectionPoolSize="512" maxNamedPipePooledConnectionAge="30000" initialRequestBufferSize="4096" maxRequestBufferSize="65536" uncFileChangesPollingInterval="5000" gracefulShutdownTimeout="60000" logDirectory="iisnode" debuggingEnabled="true" debuggerExtensionDll="iisnode-inspector.dll" debugHeaderEnabled="false" debuggerPathSegment="debug" debuggerPortRange="5058-6058" maxLogFileSizeInKB="128" maxTotalLogFileSizeInKB="1024" maxLogFiles="20" loggingEnabled="true" devErrorsEnabled="true" flushResponse="false" watchedFiles="*.js;iisnode.yml;web.config" enableXFF="false" promoteServerVars="" configOverrides="iisnode.yml" />

    <!--

    One more setting that can be modified is the path to the node.exe executable and the interceptor:

    <iisnode
      nodeProcessCommandLine="&quot;%programfiles%\nodejs\node.exe&quot;"
      interceptor="&quot;%programfiles%\iisnode\interceptor.js&quot;" />

    -->
        <defaultDocument>
            <files>
                <add value="app.js" />
            </files>
        </defaultDocument>
        <rewrite>
            <rules>
                <clear />
                <rule name="inspector" stopProcessing="true">
                    <match url="/app\.js.*" />
                    <conditions logicalGrouping="MatchAll" trackAllCaptures="false" />
                    <action type="None" />
                </rule>
                <rule name="appjs">
                    <match url="/*" />
                    <conditions logicalGrouping="MatchAll" trackAllCaptures="false">
                      <add input="{REQUEST_FILENAME}" pattern="version\.txt" negate="true" />
                    </conditions>
                    <action type="Rewrite" url="/app.js" />
                </rule>
            </rules>
        </rewrite>
        <security>
            <requestFiltering>
                <hiddenSegments>
                    <add segment="node_modules" />
                </hiddenSegments>
            </requestFiltering>
        </security>
    </system.webServer>
</configuration>