[jboss-jira] [JBoss JIRA] (WFLY-3878) Wildfly rejects calls due to a bug in Undertow with an UnknownHostException

[Mayank Goyal (JIRA)]

Mayank Goyal created WFLY-3878:
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             Summary: Wildfly rejects calls due to a bug in Undertow with an UnknownHostException
                 Key: WFLY-3878
                 URL: https://issues.jboss.org/browse/WFLY-3878
             Project: WildFly
          Issue Type: Bug
          Components: Web (Undertow)
    Affects Versions: 8.1.0.Final
         Environment: All
            Reporter: Mayank Goyal
            Assignee: Stuart Douglas


Refer to undertow commit:
https://github.com/undertow-io/undertow/commit/204684cc41fc369f56bd0305a7a0fd501ff30f16

With proxy-address-forwarding="true" set in wildfly configuration & X-Forwarded-For headers passed in headers with additional proxies following behaviour can be noticed.

For example with X-Forwarded-For set as "123.123.123.123, 210.210.210.210" following IP is reported to the application "123.123.123.12". Which is incorrect and has its own implications.

With X-Forwarded-For set as "1.1.1.1, 2.2.2.2" an java.net.UnknownHostException is thrown in the undertow package. And the connection is terminated with an Internal server error returned to the caller.



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