"X-Forwarded-For, X-Forwarded-By, and X-Forwarded-Proto" headers are non-standards headers and implementations might vary in different environments.

RFC-7239 standardizes a header field called "Forwarded" and provides the syntax and semantics for disclosing such information. I see that now a days most of the vendors supporting this including routes in "Openshift container platform" but due to lack of support in Undertow limiting us to relay on X-Forwarded-For* headers.