Webdav/Custom-Verbs not working in Undertow-Servlets

[Sabartius]

Describe the bug We're trying to port a Wildfly-Application to Quarkus, which has a custom WebDav-Servlet. After registering the Servlet in quarkus-undertow, part of it works fine, but as soon as a web-dav specific http-verb is used in the request, the servlet is not working. The cause we found was, that the http-method in the HttpServletRequest is not anymore the original http-verb like LOCK but it got changed to OTHER. This seems to originate somewhere in Vertx. After debbuging the error it was still possible to find the original http-verb, but deeply nested inside the request in some vertx-classes, for example ((DefaultHttpRequest)((HttpServerRequestImpl)((ResumingRequestWrapper)((ForwardedServerRequestWrapper)((HttpServerRequestWrapper)((VertxHttpExchange)((HttpServerExchange)((HttpServletRequestImpl)((ServletWebdavRequest)req).req).exchange).delegate).request).delegate).delegate).delegate).request).method returns the original http-verb.

Expected behavior HttpServletRequest returns the actual http-verb/method the request was made with, not OTHER

Actual behavior Every Request with custom-method is transformed to a request with the method OTHER

To Reproduce

Steps to reproduce the behavior:

1. Register a Servlet in Quarkus-Undertow
2. Make a Http-Request with a Custom-Verb, like LOCK
3. See that the servlet gets a Request containing the Verb OTHER

Environment (please complete the following information):

• Output of uname -a or ver: Linux d-dev09.sosi20.prosoz.de 3.10.0-1127.19.1.el7.x86_64 #1 SMP Tue Aug 25 17:23:54 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux
• Output of java -version: openjdk version "11.0.8" 2020-07-14 LTS
• GraalVM version (if different from Java):
• Quarkus version or git rev: 1.8.1.Final
• Build tool (ie. output of mvnw --version or gradlew --version):

[geoand]

Is this still an issue?