[Bug?] TooManyHeaders(hdrs.X_FORWARDED_FOR) is raised due to duplicate IPs about aiohttp-remotes HOT 3 CLOSED

Since X-Forwarded-* limitations there is a genuine conflict when any header is encountered more than once.
That's why the library raises an exception for such case.

Standard Forwarded header supports multiple occurrences, it is the preferable approach for very many reasons.

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Thanks for the reply. I need the X-Forwarded header since I'm using a reverse proxy.

As it turns out, the issue was my nginx config. It had the following line:

        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;

which caused duplicate X-Forwarded-For headers.

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You may be surprised but Forwarded can be used for reverse proxies as well ;)

Anyway, happy to know that the problem is solved.

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