[jira] [Resolved] (NIFI-9469) Context path issue when NiFi is served behind proxy server

["David Handermann (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/NIFI-9469?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

David Handermann resolved NIFI-9469.
------------------------------------
    Resolution: Fixed

Thanks for the confirmation [~Gilles.Perreault], and thanks for the help [~porterep]!

> Context path issue when NiFi is served behind proxy server
> ----------------------------------------------------------
>
>                 Key: NIFI-9469
>                 URL: https://issues.apache.org/jira/browse/NIFI-9469
>             Project: Apache NiFi
>          Issue Type: Bug
>          Components: Configuration
>    Affects Versions: 1.15.0
>         Environment: CentOS 7, openjdk version "1.8.0_312"
>            Reporter: Eric Porter
>            Priority: Minor
>              Labels: proxy
>
> After upgrading to NiFi 1.15.0 we noticed that we could no longer reach nifi on the root context path. The error we were seeing follows:
> {noformat}
> javax.ws.rs.core.UriBuilderException: The provided context path [/] was not registered as allowed [[]] {noformat}
> Our nifi.web.proxy.context.path was set to:
> {noformat}
> nifi.web.proxy.context.path=/{noformat}
>  
> To troubleshoot, we added /nifi to the nifi.web.proxy.context.path property and changed our X-ProxyContextPath proxy setting to "/nifi" and found that we could load nifi.
> {noformat}
> nifi.web.proxy.context.path=/nifi,/ 
> X-ProxyContextPath "/nifi"{noformat}
> However, leaving X-ProxyContentPath set to "/" and setting nifi.web.proxy.context.path=/nifi,/ resulted in the same error, but helped us to discover that there seems to be an issue with parsing the single '/' character from the nifi.web.proxy.context.path setting. 
> {code:java}
> javax.ws.rs.core.UriBuilderException: The provided context path [/] was not registered as allowed [[/nifi, ]] {code}
> After trying different escaping methods, were able to work around this issue by using the following setting:
> {noformat}
> nifi.web.proxy.context.path=//{noformat}
>  



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