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The original was posted on /r/selfhosted by /u/purepersistence on 2025-01-24 13:15:09+00:00.
For years I made my life difficult debugging reverse proxy issues. Like which headers are getting passed by the reverse proxy and what are their values? When things don't work right the headers might not actually be passed, might not have the right value, might get mishandled by downstream servers, might not be trusted by the destination. It's good to know for sure what's leaving the reverse proxy because if that's not what it should be, all bets are off.
I found this simple docker container called whoami. You can deploy it and change your proxy host to point to that instead. It will display all the headers and values passed to it by the proxy.
Thought I would share in case I'm not the only one that doesn't know already.
whoami screenshot
