These crates had no changes until just a moment ago. But since
we updated the versions on some of their dependents, they have now
changed themselves. Thus they get patchlevel bumps.
```
tor-rtmock
tor-protover
tor-socksproto
tor-consdiff
tor-chanmgr
tor-dirclient
tor-hsservice
```
For these crates, the changes are nontrivial, so we
_do_ bump the versions on which their dependent crates depend.
Fortunately, since they are all pre-1.0, we don't need to
distinguish semver-additions from other changes. (Except for arti,
which _is_ post-1.0, but gets a patchlevel bump anyway.)
These are unstable crates with breaking changes:
```
tor-hscrypto
tor-hsclient
```
These have new or extended APIs:
```
safelog
tor-bytes
tor-cell
tor-linkspec
tor-llcrypto
tor-proto
tor-cert
arti-client
```
These have new unstable APIs or features:
```
tor-netdoc
tor-circmgr (also broke some unstable APIs)
arti (is post-1.0)
```
These have bugfixes only:
```
caret
tor-dirmgr
```
(I found "user request" in one place, and fixed that. I am not
currently going to try to unify "control message" and "meta message"
since both terms are misleading and we already have TODOs to try to
merge them into a third better term.)
This new function combines "sending a message" and "accepting
replies in a stream" into a single call, so that there is no gap
between when the message is sent and the replies are available.
There are a number of compromises here, in order to avoid API
proliferation. I've tried to contain them as best I can.
See comments for additional design discussion.
Now, the MetaCellHandler is responsible for consuming the messages
it gets, and reporting status to whatever task is waiting for a
status message.
Additionally, the MetaCellHandler can decide to remain installed or
shut down the circuit after a successful message. (Previously, it
could only uninstall itself on success and kill the circuit on
failure.)
These changes will enable MetaCellHandlers to be used as the basis
for handling more kinds of message.
(There is some moved and reformatted code here; you may want to
review it with `git {diff or show} --color-moved -b`.)
These crates have had small code changes, but no API additions:
tor-config
tor-socksproto
tor-cert
tor-chanmgr
tor-ptmgr
tor-guardmgr
tor-circmgr
tor-dirclient
tor-dirmgr
arti
tor-hsservice
tor-congestion
These crates have had API extensions:
fs-mistrust
tor-llcrypto
tor-bytes
tor-checkable
tor-linkspec
tor-netdoc
tor-persist
arti-client
This change makes sure that open streams and half-closed streams
have the same stream-type-dependent state machines with respect to
which cells are acceptable.
Fixes#774.
Fixes#769.
The role of CmdChecker is to verify that messages are arriving at
the appropriate sequence on a stream, with respect to the other
messages that have been received. Once the stream becomes
half-closed, the CmdChecker is also in charge of consuming incoming
messages on the stream and making sure that they are well-formed.
This includes a partial solution for #769, but also turned up
another bug (#774) while I was working on it. I'll close them both
once I have a real solution.
We now manipulate raw relay cell bodies as (an alias for)
`Box<[u8;509]>` rather than as (an alias for) `[u8;509]`. This
enables us to do much less copying. It will become more important
soon, as we defer parsing relay cell bodies even longer.
Related to #7.
We also use SliceWriter to avoid allocating a Vec<> for every relay
message we want to encode, and instead encode directly into the
cell.
Unlike C tor, we treat unrecognized commands as reason to kill off
the connection entirely. That's fine; if we need to add an
unrecognized command in the future, we can use VERSIONS to negotiate
it.
Also, if someday we want this code to support relay channels as
well, we can use some type trickery to have that work too.
Every FooMsg type now implements Into<AnyFooMsg>, and
TryFrom<FooMsg>.
Additionally, it now implements From<X> for every distinct type that
it supports. This last part lets us discard a bunch of code.
Unfortunately, I needed some downright hackish trickery in order to
get these macros to avoid generating `From<AnyFooMsg> for AnyFooMsg`
and conflicting with the blanket implementation.
The trickery to deal with RelayEarly and Relay being the same type
was not necessarily worth it; I will be separating them and removing
said trickery in the next commit.
In !948 we renamed a couple of accessor functions, which is a
breaking change in `tor-cell`'s API.
In retrospect, perhaps we should have deprecated the old names and
added the new ones, so we wouldn't have to break the API. (This is
the only API break AFAICT since 1.1.0.)
These changes influence behavior, but not effect compatibility.
(If I messed up, and any crate except for `arti` has non-breaking
API changes, that's still fine, since they are all version
0.x.)
Nick Mathewson
Ian Jackson