* streamline socket read/write hot path
This avoids some unnecessary memory copying on the hot path of noise /
mplex, as well as getting rid of a few futures - profiling shows that
this is one of the main culprits of small memory allocations, which
makes sense - this is where gossip fan-out happens.
* fewer futures (and corresponding closures) when sending lpchannel
messages
* avoid data copies when encrypting and framing noise messages
* avoid copying tuple when reading noise data (poor c codegen)
* fix setting eof flag in secure read
* write noise frames in one go
...and closing secure socket once is enough
* handle resets properly with/without pushes/reads
* add clarifying comments
* pushEof should also not be concurrent
* move channel reset to bufferstream
this is where the action happens - lpchannel merely redefines how close
is done
Co-authored-by: Jacek Sieka <jacek@status.im>
* fix channels not being reset
silly for loop..
* allow only one concurrent read
* fix mplex test race condition
* add some bufferstream eof tests
* deadlock, lost data and hung channel fixes
* prevent concurrent `reset` calls
* reset LPChannel when read is cancelled (since data is lost)
* ensure there's one, and one only, 0-byte readOnce on EOF
* ensure that all data is returned before EOF is returned
* keep running activity monitor for half-closed channels (or they never
get closed)
* break stream tracking by type
* use closeWithEOF to await wrapped stream
* fix cancelation leaks
* fix channel leaks
* logging
* use close monitor and always call closeUnderlying
* don't use closeWithEOF
* removing close monitor
* logging
To break a potential read/write deadlock, gossipsub uses an unbounded
queue for writes - when peers are too slow to process this queue, it may
end up growing without bounds causing high memory usage.
Here, we introduce a maximum write queue length after which the peer is
disconnected - the queue is generous enough that any "normal" usage
should be fine - writes that are `await`:ed are not affected, only
writes that are launched in an `asyncSpawn` task or similar.
* avoid unnecessary copy of message when there are no send observers
* release message memory earlier in gossipsub
* simplify pubsubpeer logging
* add helper to read EOF marker after closing stream (else stream stay
alive until timeout/reset)
* don't assert on empty channel message
* don't loop when writing to chronos (no need)
* channel close race and deadlock fixes
* remove send lock, write chunks in one go
* push some of half-closed implementation to BufferStream
* fix some hangs where LPChannel readers and writers would not always
wake up
* simplify lazy channels
* fix close happening more than once in some orderings
* reenable connection tracking tests
* close channels first on mplex close such that consumers can read bytes
A notable difference is that BufferedStream is no longer considered EOF
until someone has actually read the EOF marker.
* docs, simplification
* remove almost-empty types module
* lock when writing message (that's the only place the lock matters, and
only when the message is > max msg size)
* logging updates (log in consistent order, makes reading logs easier)
* raise EOF from readExactly only if no bytes have been read (to signal
that _no_ bytes were lost)
This change modifies how the backpressure algorithm in bufferstream
works - in particular, instead of working byte-by-byte, it will now work
seq-by-seq.
When data arrives, it usually does so in packets - in the current
bufferstream, the packet is read then split into bytes which are fed one
by one to the bufferstream. On the reading side, the bytes are popped of
the bufferstream, again byte by byte, to satisfy `readOnce` requests -
this introduces a lot of synchronization traffic because the checks for
full buffer and for async event handling must be done for every byte.
In this PR, a queue of length 1 is used instead - this means there will
at most exist one "packet" in `pushTo`, one in the queue and one in the
slush buffer that is used to store incomplete reads.
* avoid byte-by-byte copy to buffer, with synchronization in-between
* reuse AsyncQueue synchronization logic instead of rolling own
* avoid writeHandler callback - implement `write` method instead
* simplify EOF signalling by only setting EOF flag in queue reader (and
reset)
* remove BufferStream pipes (unused)
* fixes drainBuffer deadlock when drain is called from within read loop
and thus blocks draining
* fix lpchannel init order
* add finegrained timeouts to pubsub
* use 10 millis timeout in tests
* finalization
* revert timeouts
* use `atEof` for reads
* adjust timeouts and use atEof for reads
* use atEof for reads
* set isEof flag
* no backoff for pubsub streams
* temp timer increase, make macos finalize
* don't call `subscribePeer` in libp2p anymore
* more traces
* leak tests
* lower timeouts
* handle exceptions in control message
* don't use `cancelAndWait`
* handle exceptions in helpers
* wip
* don't send empty messages
* check for leaks properly
* don't use cancelAndWait
* don't await subscribption sends
* remove subscrivePeer calls from switch
* trying without the hooks again
* add support for channel timeouts
* tests for channel timeout
* add timeouts to standard switch
* fix mplex init
* cleanup timer on stream close
* add comment for `isConnected`
* move cleanup event
* count published messages
* don't call `switch.dial` in `subscribeToPeer`
* don't use delegation in connection
* move connection out to own file
* don't breakout on reset
* make sure to call close on secured conn
* add lpstream tracing
* don't breackdown by conn id
* fix import
* remove unused lable
* reset connection on exception
* add additional metrics for skipped messages
* check for nil in secure.close
* call write until all is written out
* add comments to lpchannel fields
* add an eof flag to signal which end closed
* wip: rework with proper half-closed
* add eof and closed handling
* propagate closes to piped
* call parent close
* moving bufferstream trackers out
* move writeLock to bufferstream
* move writeLock out
* remove unused call
* wip
* rebasing master
* fix mplex tests
* wip
* fix bufferstream after backport
* wip
* rename to differentiate from chronos tracker
* close connection on chronos close
* make reset request asyncCheck
* fix channel cleanup
* misc
* don't use read
* fix backports
* make noise work again
* proper exception handling
* don't reraise just yet
* add convenience templates
* dont double wrap
* use async pragma
* fixes after backporting
* muxer owns connection
* remove on transport close cleanup
* revert back allread
* adding some todos
* read from stream
* inc count before closing
* rebasing master
* rebase master
* use correct exception type
* use try/finally insted of defer
* fix compile in trace mode
* reset channels on mplex close
* handle a few exceptions
Some of these are maybe too aggressive, but in return, they'll log
their exception - more refactoring needed to sort this out - right now
we get crashes on unhandled exceptions of unknown origin
* during connection setup
* while closing channels
* while processing pubsubs
* catch exceptions that are raised and don't try to catch exceptions that are not raised
* propagate cancellederror
* one more
* more
* more
* make interop tests less fragile
* Raise expiration time in gossipsub fanout test for slow CI
Co-authored-by: Dmitriy Ryajov <dryajov@gmail.com>
Co-authored-by: Giovanni Petrantoni <giovanni@fragcolor.xyz>
* Start removing allFutures
* More allfutures removal
* Complete allFutures removal except legacy and tests
* Introduce table values copies to prevent error
* Switch to allFinished
* Resolve TODOs in flood/gossip
* muxer handler, log and re-raise
* Add a common and flexible way to check multiple futures
* only check for payload size
* only subscribe if connection succeeded
* fix failing test
* check that the strem is active before openning
* msg type should not be > than 0x7
* fix tests
* check max against enum val
Jacek Sieka
Dmitriy Ryajov
Eugene Kabanov
Giovanni Petrantoni
Ștefan Talpalaru
Viktor Kirilov