Tests can pass an EventualQueue into wormhole.create(), to override the
default. This lets the tests flush the queue without using a haphazard
real-time delay.
closes#23
(in fact, we added multiple-Deferreds-per-API a while ago, but this does it
in a much cleaner fashion, and with the safety of an eventual-send)
This factors out the various "give me a Deferred for an value that may or may
not eventually be successfully generated" routines in _DeferredWormhole. It
uses an eventual-send to fire the Deferreds to avoid plan-coordination
hazards when the attached callbacks then call back into the Wormhole object
before the rest of the state transition has finished.
We defer starting a new timer until we've completely emptied the queue, since
we know we'll get to any new events added inside one of our callbacks. The
old design in Foolscap (which copied the list, cleared the original, then
fired everything in the copy) didn't look at these new events. OTOH, this
pop(0)-until-empty approach makes it easier to get into an infinite loop (any
callback which queues a new callback will get priority over anything else).
But the code is simpler.
I've seen intermittent failures in
test_cli.PregeneratedCode.test_text_subprocess where the host was slow (or
overloaded) enough that the "Waiting for sender.." pacifier message was
displayed, which flunks the test because we're looking for a specific output
string. We patch this 1-second timer in the non-subprocess tests, but you
can't patch across a process boundary.
This patch adds an undocumented environment variable that lets you override
the timer values. The test then sets it to something large.
For future consideration: another approach would be to change the test to
tolerate the extra message. This would be trickier to validate, though.
This will be necessary to avoid reentrancy hazards, in case the application
code makes other wormhole API calls from the callbacks for
get_unverified_key(), get_verifier(), or get_message().
We were missing two (the calls to choose_nameplate() and choose_words() that
happen after the input() function has finished, but while we're still inside
the thread that makes it safe for input() to block). This almost certainly
caused the crash seen in issue #280.
Update the tests to match: CodeInputter.finish must now be called with
deferToThread from inside tests, or the internal blockingCallFromThread must
be stubbed out.
This causes two threads to use the reactor at the same time, with horrible
results. The _rlcompleter code currently violates this requirement, causing
occasional failures if the messages arrive in just the wrong way (refs #280).
Also log events at the beginning and end of Input.choose_nameplate and
Input.choose_words, since those are the two big locally-driven (UI) triggers
that cause multiple messages to be fired and lots of work to happen.
lgtm.com noticed some unreachable code paths, and it turns out that nothing
in the rest of the code base could ever raise WormholeClosedError (I guess it
was leftover from before the big API refactoring). Both sender and receiver
are simpler without the unnecessary checks and state variables.
This comments out some "if 0: debug()" stuff I keep around to investigate
problems, since lgtm thinks of it as accidentally-unreachable code.
I also deleted a server usage command
entirely (src/wormhole/server/cmd_usage.py show_usage) which was disabled
while I rewrote that schema: the new plan is to move the server into a new
repository altogether, and use a completely different approach to the
usage database.
A slow Travis-CI host caused one the 1.0s KEY_TIMER to fire by accident,
making the test fail because it wasn't expecting to see the "please be
patient" message. Fixed this by increasing the timeout to a very large value
when we aren't explicitly testing it.
A tiny update to show the command to execute along with the code required on
the same line, rather than split across two lines. This small change helps
when sending the information to others using copy and paste.
Fixes#266
-=david=-
This ought to help with #251, where bash-on-windows makes it easy to add a
forward-slash, and os.path.normpath() knows how to remove them, but os.sep is
a backslash.
Added the click option to look for relay and transit urls in environment
variables. If you're running your own relay/transit servers (such as
inside a corporate firewall), this will make client's lives easier.
If you pass --tor-control-port= and we can't use it, throw an error that will
kill the whole process, instead of falling back to the default SOCKS port.
If you omit --tor-control-port=, then if all default control port connections
fail, we'll fall back to the default SOCKS port.
Also, test each combination separately, and improve the status messages.
Linux defaults to a soft limit of 1024, which limits us to 512 simultaneous
non-transit-using connections. The transit relay runs in the same process, so
long-running relayed transfers will compete for those sockets too.
This raises the soft limit to equal the hard limit (if possible), or as much
as we can manage, if the soft limit was less than 10k. If the
resource.setrlimit calls aren't available (e.g. windows), or some other error
happens, this will log a message and continue without changing the limits.
closes#238
