previously we had a checking style function that passes in an optional
defaulting to nullopt as a micro optimzation, this makes the code
unnessarily obtuse.
simplify this by splitting up into 2 functions,
one for getting the unique endpoints and one for checking if the
number of them is above the minimum.
add overload for ReadyToDoLookup() that checks against constant but
can do more in the future if desired to reduce the burden on future contributors.
Query->Cancel() will remove the Query, but that introduces a race
condition where unbound may still try to invoke the callback (with a
no-longer-valid pointer) if we do it before the ub_ctx_delete call.
Move to it afterwards so that we only cancel things that unbound didn't
Occasionally during shutdown windivert will crash because a thread tries
sending after we've called wd::shutdown, which isn't allowed. Add an
atomic bool to prevent this.
we were calling llarp::Context::HandleSignal from a non mainloop
thread when running as a win32 service. this caused issues with a non
clean destruction.
call our signal handler instead of llarp::Context::HandleSignal
Get rid of the --win32-daemon hack (which was removed from the service
itself earlier in this PR, by mistake) and replace it with detection of
the error code for "not running as a service" that windows gives us back
if we try to set up service controller dispatching but aren't a service.
If wintun fails it seems to take about 15s, so extend the startup
timeout so that it can fail gracefully (and let us clean up before
exiting).
Also refactors the timeouts to chrono constants.
Fixes windows shutdown crashes:
- windivert wasn't handling an ERROR_NO_DATA, which it gets when
finished handling everything after a shutdown.
- wintun ReadPacket still gets invoked after end_session is called, but
shouldn't be. This adds an atomic<bool> to early return.
- fixes up some settings we send for windows service manager notify
- win32_platform.cpp is dead
- win32_platform.hpp is useless
Style changes from clang-tidy warnings:
- remove `virtual` from some definitions that already have `override`
- remove virtual destructor from NetworkInterface because it already has
a virtual destructor via the base type (and clang-tiny warns about it)
the win32 and sd_notify components provided a disjointed set of
similar high level functionality so we consolidate these duplicate
code paths into one that has the same lifecycle regardless of platform
to reduce complexity of this feature.
this new component is responsible for reporting state changes to the
system layer and optionally propagating state change to lokinet
requested by the system layer (used by windows service).
