This commit changes how the `TorClient` type works, enabling it to be
constructed synchronously without initiating the bootstrapping process.
Daemon tasks are still started on construction (although some of them
won't do anything if the client isn't bootstrapped).
The old bootstrap() methods are now reimplemented in terms of the new
create_unbootstrapped() and bootstrap_existing() methods.
This required refactoring how the `DirMgr` works to enable the same sort
of thing there.
closes#293
Instead of declaring a macro that takes vis as an argument, we now
conditionally declare a macro that applies an appropriate visibility.
There's a long comment explaining the rationale here, along with a
couple of other solutions that don't work.
This is closer to what we described in Errors.md.
Also, remove the (sometimes private) Result alias: it was only used in
one or two places, and never exposed in public.
This change lets us make TorError's members unconditionally hidden,
and makes our API a little more consistent (since basically nothing
else is a public field).
At least by default, we should have Error be private, and not expose
it as part of our APIs.
To keep functionality in `arti`, I had to add an `ExitTimeout` error
kind.
For interface consistency, I also re-exported ErrorKind and HasError
from `arti_client`.
The motivation for doing this now is to remove the `#[from]` so we
would spot where operationsl circuit setup failures were handled.
(But it turns out that they are turned into internal errors!)
Perhaps this will want to become a different error type from circmgr
in due course, but for now we simply use a bespoke variant of
TorError.
It will want its own Kind. The TODO in the HasKind impl marks
this (amongst much else here).
This involves making a temporary ErrorKind::TODO. That will continue
to exist until all errors (at least, the ones that make it out to
here) can be properly categorised.
Introducing this will let us work from the top and bottom towards the
middle.
Provide an enum variant to contain the SpawnError and a From impl.
We use `#[from]` here because it doesn't really make sense to attach
any context, as it's not likely to be very relevant.
This commit puts the native-tls crate behind a feature. The feature
is off-by-default in the tor-rtcompat crate, but can be enabled
either from arti or arti-client.
There is an included script that I used to test that tor-rtcompat
could build and run its tests with all subsets of its features.
Closes#300
Having separate types here doesn't justify the (very limited)
benefit of distinguishing between the case where we have created an
executor that we own and the case where we have a handle to an
already-running tokio executor.
Part of #301.
The docs even say this is about stream.
As @nickm writes in
https://gitlab.torproject.org/tpo/core/arti/-/merge_requests/252#note_2771289
we generally call end-to-end connections that are tunneled over Tor
"Streams" to distinguish them from everything else in the Tor
protocols that could possibly be called a "Connection".
That seems to apply here too.
In the usual case, set_isolation_group is awkward.
This is perhaps slightly duplicative with TorClient::isolated_client().
If so then perhaps the *latter* should be abolished.
Nick Mathewson
eta
Yuan Lyu
Ian Jackson
Dimitris Apostolou
Neel Chauhan
Ian Jackson