The switch tells OnionPerf to prepend yesterday's date to the analysis
output file.  This new switch is mutually exclusive with --date-filter.

This fixes <https://bugs.torproject.org/29369>.

While touching this code:
 - make sure that the index.xml file itself is not contained and
 - fix the encoding issue introduced by the Python 3 upgrade.

Fixes #29365.

Signed-off-by: Philipp Winter <phw@nymity.ch>

One can enable single onion services by passing the --single-onion flag
to OnionPerf's measure mode.

Spotted by phw, part of #29370.

Right now, it's possible to specify both -o and -i at the same time,
which doesn't make any sense.

Also, it's rather non-intuitive that both argument defaults are True
and that setting either of them changes their value to False.

This patch fixes both issues above.

Fixes #34316.

Fixes #34261.

Fixes #34216.

Now that <https://bugs.torproject.org/33258> is merged, we require these
two libraries.

If we don't do that, pip may fail because older versions don't ship with
the wheel package, which is needed to build some of our requirements.

To make this work, we also had to replace distutils with setuptools
because distutils does not understand the install_requires keyword.

Co-authored-by: Ana Custura <ana@netstat.org.uk>

As pointed out in #30586, requirements.txt is not in sync with what
onionperf actually requires.  This commit adds missing and removes
unnecessary dependencies.

We're now including the time that it takes for tor to establish a
circuit and attach a stream in the time to first/last byte.

Implements #34215.

Turns out that Networkx renamed the node attribute to nodes some time
between version 2.2.1 and 2.4. This workaround avoids accessing that
attribute to add another key/value pair to an existing node and
instead uses two different key/value pair sets when adding the node in
the first place. Not pretty, but works around the issue.

Fixes #34298.

These visualizations are not really useful to us, so we can as well
remove them and all remaining pylab code with it.

As part of this change, output files are being renamed from
tgen.onionperf.viz.yyyy-mm-dd.{csv,pdf} to just
onionperf.viz.yyyy-mm-dd.{csv,pdf}.

Implements #34214.

Still part of Implements #33434.

With the new partial downloads timestamps we can easily extract
time-to-first-50-KiB and time-to-first-1-MiB numbers from the 5 MiB
downloads. An analysis of past measurements showed that these numbers
are comparable.

By removing those smaller downloads we increase the total number of
actually useful measurements.

Total bandwidth consumption from this change increases from 14 to 140
kbps which still seems very reasonable.

Implements #34023.

The idea is to avoid overlapping measurements. With a new measurement
starting every 5:00 minutes, we time out after 4:30 minutes to make
"room" for the next measurement to start.

We also don't use the stallout feature anymore by setting the value to
0 seconds. The stallout would have failed a measurement after not
receiving new bytes for the given number of seconds. But that's also
not what we want to measure.

Implements #34024.

This commit touches similar places in the code as c8b0fc22 which added
v3 onion service support.

Implements #33434.