RiseupVPN measurements frequently say "likely blocked" when server is down

[agrabeli]

During the OONI Partner Training 2021 (https://ooni.org/post/ooni-partner-training-2021/), participants reported that the RiseupVPN test frequently reports false positives, saying that RiseupVPN is "likely blocked" when it's not (instead, their servers are down).

Perhaps we can add control measurements to the RiseupVPN test? Or perhaps we can somehow detect and annotate when the test fails due to server issues?

[kalikaneko]

Status of riseup infra can be checked at https://riseupstatus.net/

There's a json of the current status https://riseupstatus.net/index.json

I don't seem to find a machine-parseable version of the history, but that's perhaps a feature request to https://github.com/cstate/cstate