the reverse proxy of api.ooni.org incorrectly rewrites "X-Forwarded-For" header

[Lanius-collaris]

Recently I used a browser extension that can modify X-Forwarded-For request header to bypass some geo-blocking, but I forgot to turn off this extension before visiting explorer.ooni.org, got a '1.1.1.1, x.x.x.x' does not appear to be an IPv4 or IPv6 address error.

command for test:

curl -v -H "x-forwarded-for: 1.1.1.1" "https://api.ooni.org/api/v1/aggregation?axis_x=measurement_start_day&axis_y=probe_cc&test_name=psiphon&since=2024-10-22&until=2024-11-22&time_grain=day"