We MUST handle them and we are not allowed to act on a stream after it failed, as i am to lazy to change the structure to ensure the client to be imeadiatly dropped i added a AtomicBool to it.
- we had the problem that Participants couldn't shutdown them self, only by scheduler, which was controlled by api.
it's needed e.g. to handle the Schudown Frame
- my initial solution did a full shutdown, which was a problem if in parallel a 2nd shutdown was requested, no possibility of getting the error
- new solution will only deactivate Participant and Stream. and then still functions correctly, till the api closes the participant and calls the scheduler which then calls the bparticipant again
- i experimented with a Mutex<oneshot> or 2 and a `select` but it didn't prove that well
- also adjusted the Error messages to now either Disconnected when gracefully shutdown or ProtocolFailed when some msg couldn't be delivered
(note later might not be 100% returned correctly yet)
- API behavior switched!
- the `Network` no longer holds a copy of participant, thus if the return of `connect` (before `Arc<Participant>, now `Participant`) got dropped, the `Participant::Drop` is triggered!
- you can close a Participant async via `Particiant::disconnect()`, no more need to know the network at this point
- the `Network::Drop` will check and drop not yet disconnected Participants.
- you can compare Participants via PartialEq, if they are true they point to the same endpoint (it checks remote_pid)
- Note: multiple Participants are only supported in theory, wont work yet
Additionally:
- fix some `debug!`
- veloren-client will now drop the participant gracefully on shutdown
- rename `error` to `debug` when 2 times Bparticipant shutdown is called, as it is to be expected in a async runtime
- this bug was initially called imbris bug, as it happened on his runners and i couldn't reproduce it locally at fist :)
- When in a Handshake a seperate mpsc::Channel was created for (Cid, Frame) transport
however the protocol could already catch non handshake data any more and push in into this
mpsc::Channel.
Then this channel got dropped and a fresh one was created for the network::Channel.
These droped Frames are ofc a BUG!
I tried multiple things to solve this:
- dont create a new mpsc::Channel, but instead bind it to the Protocol itself and always use 1.
This would work theoretically, but in bParticipant side we are using 1 mpsc::Channel<(Cid, Frame)>
to handle ALL the network::channel.
If now ever Protocol would have it's own, and with that every network::Channel had it's own it would no longer work out
Bad Idea...
- using the first method but creating the mpsc::Channel inside the scheduler instead protocol neither works, as the
scheduler doesnt know the remote_pid yet
- i dont want a hack to say the protocol only listen to 2 messages and then stop no matter what
So i switched over to the simply method now:
- Do everything like before with 2 mpsc::Channels
- after the handshake. close the receiver and listen for all remaining (cid, frame) combinations
- when starting the channel, reapply them to the new sender/listener combination
- added tracing
- switched Protocol RwLock to Mutex, as it's only ever 1
- Additionally changed the layout and introduces the c2w_frame_s and w2s_cid_frame_s name schema
- Fixed a bug in scheduler which WOULD cause a DEADLOCK if handshake would fail
- fixd a but in api_send_send_main, i need to store the stream_p otherwise it's immeadiatly closed and a stream_a.send() isn't guaranteed
- add extra test to verify that a send message is received even if the Stream is already closed
- changed OutGoing to Outgoing
- fixed a bug that `metrics.tick()` was never called
- removed 2 unused nightly features and added `deny_code`
fix async_recv and double block_on panic on Network::drop and participant::drop
include Cargo.lock from all examples
Found a bug on imbris runners with doc tests of `stream::send` and `stream::recv`
As neither a backtrace, nor tracing on runners in the doc tests seems to help, i disable them and add them as unit tests
