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

[Masafumi Miura (Jira)]

     [ https://issues.redhat.com/browse/WFLY-13483?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Masafumi Miura updated WFLY-13483:
----------------------------------
    Description: 
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 scenario, the front-end proxy adds X-Forwarded-* request headers to provide information about the original requester. 

However, as the current undertow subsystem does not have a configurable parameter to reuse it, undertow mod-cluster and reverse-proxy always overwrite X-Forwarded-For request header with its own information.





  was:
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.







> 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
>          Components: Web (Undertow)
>    Affects Versions: 19.1.0.Final
>            Reporter: Masafumi Miura
>            Assignee: Flavia Rainone
>            Priority: Major
>
> 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 scenario, the front-end proxy adds X-Forwarded-* request headers to provide information about the original requester. 
> However, as the current undertow subsystem does not have a configurable parameter to reuse it, undertow mod-cluster and reverse-proxy always overwrite X-Forwarded-For request header with its own information.



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