These tests include a few reference cases, as well as a little
framework to make sure that the client and the proxy implementation
will handshake with one another successfully.
Retain "SocksHandshake" as a deprecated synonym.
Also, make an (on-by-default) feature for SocksProxyHandshake.
(There is about to be a SocksClientHandshake as well.)
Previously we always assumed that the console was ephemeral, and so
we disabled safe logging. But the console can be piped to journald.
And even if we enforce isatty there's no guarantee that the user
isn't using some kind of terminal that logs to disk or something.
Best just to enable SafeLogging unconditionally. I've added a note
about where and how we might re-enable this.
Closes#553.
This covers only the most basic notions of working with bridges:
that we need a separate set of guards, and that they have to
come from the list of known bridges.
Without this, actually building circuits manually is a pain.
This API is behind the `experimental-api` feature, and so it does
not require a semver.md entry.
Try to clarify more that the ChannelUsage is for describing the
usage for one particular channel request, not for the channel as a
whole. This is a potentially confusing point, so we should spell it
out completely.
As a matter of good crypto practice, we shouldn't use
short-circuiting checks to compare keys or key-like objects, since
the amount of time taken by those checks can leak information about
their inputs.
I don't think it's actually _necessary_ to use a constant-time
operation in this case, but let's establish the precedent.
This is a follow-up to !724.
There are some places in the protocol where we have an all-zero RSA
identity that does not truly represent a key, but rather represents
an absent or unknown key. For these, it's better to use
`RsaIdentity::is_zero` instead of manually checking for a set of
zero bytes: it expresses the intent better, and ensures that the
operation is constant-time.
I am deliberately not introducing a more general IsZero trait here,
or implementing is_zero for anything else: This is the only one we
seem to need right now. We can generalize it later if we have to.
This fixes an busy-loop.
When the last `TaskHandle` on a `TaskSchedule` is dropped, the
schedule is permanently canceled: whatever operation it was
scheduling should no longer be performed. But our code was broken:
the `sleep()` and `sleep_until_wallclock()` functions don't verify
whether the handles are dropped or not.
This breakage caused an CPU-eating busy-loop in
`sleep_until_wallclock`.
With this patch, we now return a `Result<(), SleepError>` from these
functions.
Fixes#572.
Nick Mathewson
Ian Jackson
Yuan Lyu
trinity-1686a
eta
Ian Jackson