[jboss-jira] [JBoss JIRA] (WFLY-13483) Add reuse-x-forwarded support to mod-cluster filter and reverse-proxy handler

[Masafumi Miura (Jira)]

Masafumi Miura created WFLY-13483:
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             Summary: Add reuse-x-forwarded support to mod-cluster filter and reverse-proxy handler
                 Key: WFLY-13483
                 URL: https://issues.redhat.com/browse/WFLY-13483
             Project: WildFly
          Issue Type: Enhancement
            Reporter: Masafumi Miura
            Assignee: Brian Stansberry


Undertow has setReuseXForwarded() method in the builder API of ModCluster and ProxyHandler to enable support to reuse X-Forwarded-* request headers (like X-Forwarded-For header). 

However, the undertow subsystem does not expose it as the configurable parameter of <mod-cluster> and <reverse-proxy>.

This parameter is useful when the undertow load balance proxy is backed by another proxy server. In such a case, the front-end proxy adds X-Forwarded-* request headers to provide information about the original requester. 



The current implementation is unable to reuse it and overwrites it with its own information.







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