WildFly Undertow – How to Configure a Request Dump

If you need to debug the request headers send to Wildfly application server you can configure a Request-Dumper. There for change the standalone.xml file and add a filter-ref and filter configuration into the subsystem section of undertow. See the following example:

... 
<subsystem xmlns="urn:jboss:domain:undertow:2.0">
....
 <server name="default-server">
       ...
      <host name="default-host" alias="localhost">
          .....
          <filter-ref name="request-dumper"/>
      </host>
 </server>
....
<filters>
    .....
    <filter name="request-dumper" class-name="io.undertow.server.handlers.RequestDumpingHandler" module="io.undertow.core" />
</filters

This will print out all the request information send by a browser.

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