How do I redirect a specific port in the IIS server to an other port - redirect

Question

My URL Rewrite rule only works for port 80 in IIS .
The rewrite works for : http://localhost:80 --> http://localhost:8100
The rewrite works for : http://localhost:80/redirect --> http://localhost:8100
The rewrite doesnt work for : http://localhost:8080 --> http://localhost:8100
The rewrite doesnt work for : http://localhost:8080/redirect --> http://localhost:8100
My web.config is following:
<?xml version="1.0" encoding="UTF-8"?>
<configuration>
<system.webServer>
<directoryBrowse enabled="true" showFlags="Date, Time, Size, Extension, LongDate" />
<rewrite>
<rules>
<rule name="Redirect to port 8100" stopProcessing="true">
<match url="(.*)" />
<conditions logicalGrouping="MatchAny">
<add input="{SERVER_PORT}" pattern="^8100$" negate="true" />
</conditions>
<action type="Redirect" url="http://{HTTP_HOST}:8100/{R:0}" />
</rule>
</rules>
</rewrite>
</system.webServer>
</configuration>
The web.config is only working on default http port 80/443 but not for an specific port.
Which changes has to be made in the web.config for working with all ports?

Answer 1

The main problem is the variable {HTTP_HOST} which already contains the PORT information.
To solve this issue you need to adjust two things:
Extend the matching pattern within
Set the correct address for the redirect
I adjusted your web.config to see how it should work with your example:
<?xml version="1.0" encoding="UTF-8"?>
<configuration>
<system.webServer>
<directoryBrowse enabled="true" showFlags="Date, Time, Size, Extension, LongDate" />
<rewrite>
<rules>
<rule name="Redirect to port 8100" stopProcessing="true">
<match url="(.*)" ignoreCase="true" />
<conditions logicalGrouping="MatchAll" trackAllCaptures="true" >
<add input="{HTTP_HOST}" pattern="([^/:]*?):[^/]*?" />
</conditions>
<action type="Redirect" url="http://{C:1}:8100/{R:0}" appendQueryString="false" />
</rule>
</rules>
</rewrite>
</system.webServer>
</configuration>