Check the reachability of our fallback directories
After a recent conversation with OONI, we realized that, while OONI tests our directory authorities as part of the tor test, they do not check our fallback directories and the data form these tests alone is not enough to determine whether or not a (new) user can connect directly to Tor.
I talked to Arturo about this and while OONI used to test these, they no longer do. When they tried to add the test recently it made the tor tests take too long and so these new targets aren't likely to be added to the app any time soon. However, they could be a candidate for the command-line only version of OONI.