http://hctxrvjzfpvmzh2jllqhgvvkoepxb4kfzdjm6h7egcwlumggtktiftid.onion/collector.html
DIDTIMEOUT: 1 if the request timed out, 0 otherwise;
optional. DATAPERCx: Time when x% of expected bytes were read for
x = { 10, 20, 30, 40, 50, 60, 70, 80, 90 }; optional. Other measurement results, e.g., START_RENDCIRC, GOT_INTROCIRC, etc.
for hidden-service measurements; optional.