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Closes #338.
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This avoids a future confusion with the new `SpawnBlocking` trait in
async_executors v0.5, and better describes what the trait provides.
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This took some refactoring, so that I wouldn't need to define 9
different versions of the function. It also required that we change
the behavior of test_with_all_runtimes slightly, so that it asserts
on _any_ failure rather than asserting on most but returning Err()
for others. That in turn required changes to a few of its callers.
There's probably a better way to do all of this macro business, but
this is the best I could find.
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`tor-rtcompat`'s `TlsConnector` trait previously included a method to
create a TLS-over-TCP connection, which implied creating a TCP stream
inside that method. This commit changes that, and makes the function
wrap a TCP stream, as returned from the runtime's `TcpProvider` trait
implementation, instead.
This means you can actually override `TcpProvider` and have it apply to
*all* connections Arti makes, which is useful for issues like arti#235
and other cases where you want to have a custom TCP stream
implementation.
This required updating the mock TCP/TLS types in `tor-rtmock` slightly;
due to the change in API, we now store whether a `LocalStream` should
actually be a TLS stream inside the stream itself, and check this
property on reads/writes in order to detect misuse. The fake TLS wrapper
checks this property and removes it in order to "wrap" the stream,
making reads and writes work again.
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We want to only use TODO in the codebase for non-blockers, and open
tickets for anything that is a bigger blocker than a TODO. These
XXXXs seem like definite non-blockers to me.
Part of arti#231.
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These are my fault; I merged the wrong version of !102. :p
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Instead of racily advancing time forward, this commit attempts to rework
how WaitFor works, such that it makes advances when all sleeper futures
that have been created have been polled (by handing the MockSleepRuntime
a Waker with which to wake up the WaitFor).
The above described mechanics work well enough for the double timeout
test, but fail in the presence of code that spawns asynchronous /
background tasks that must make progress before time is advanced for the
test to work properly. In order to deal with these cases, a set of APIs
are introduced in order to block time from being advanced until some
code has run, and a carveout added in order to permit small advances in
time where required.
(In some cases, code needed to be hacked up a bit in order to be made
properly testable using these APIs; the `MockablePlan` trait included in
here is somewhat unfortunate.)
This should fix arti#149.
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This will cause some pain for now, but now is really the best time
to do this kind of thing.
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