431 Too Many Headers when getting largefiles

[Ansis Māliņš]

Hello. I have a repository with lots of largefiles. Since recently, people
have trouble cloning it over HTTP. It fails at the step of "getting changed
largefiles". Cloning with --noupdate succeeds, but then hg update default
hangs Mercurial, and pressing Ctrl+C has it print "431 Too Many Headers" as
it quits. The repository is a hg serve behind an Nginx. Looking at the
logs, I've determined that the error is coming from hg serve and not Nginx.
I have also determined that the issue only occurs when Nginx is in the
loop. Talking directly to hg serve succeeds.

The relevant Nginx config is as follows:

large_client_header_buffers 4 1m;
location /hg/ {
    proxy_pass http://127.0.0.1:8000/;
    client_max_body_size 10g;
    proxy_buffering off;
    proxy_request_buffering off;
}

Where should I go from here?
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://www.mercurial-scm.org/pipermail/mercurial/attachments/20211003/6893ac09/attachment.html>