Unexpected ConnectionClosed in keepalive ping task

[oliver-zehentleitner]

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Environment

• Are you using the module on a VPS or other Cloud hosting?
• If so, have you tried running the code on your local machine?

Operating System? (include version)

• macOS
• Windows
• Linux (include flavour)

Python Version Requirement

• I am using Python 3.5.1 or above

Exact Python Version?

3.5.2

Pip Version?

pip 19.1

Description of your issue

The issue occurs in the dependency websockets and the issue is known: python-websockets/websockets#551

During a lot of tests in the last week, i recognized this error only one time till now. I will observe this issue.

[oliver-zehentleitner]

On 7 systems, each with 19 websockets and a transfer rate of ~30 GB/day, this error never happend again. I stopped using 3.5.2 and upgraded to 3.7.

[oliver-zehentleitner]

Till someone tells me, this issue happens also on higher python versions, its closed...

[fsteckel]

Happened to me also on python version 3.7.5, pip 18.1, ubuntu 19.10 in a local docker container.

WARNING:websockets.protocol:Unexpected exception in keepalive ping task Traceback (most recent call last): File "/usr/local/lib/python3.7/dist-packages/websockets/protocol.py", line 984, in keepalive_ping ping_waiter = yield from self.ping() File "/usr/local/lib/python3.7/dist-packages/websockets/protocol.py", line 583, in ping yield from self.ensure_open() File "/usr/local/lib/python3.7/dist-packages/websockets/protocol.py", line 646, in ensure_open ) from self.transfer_data_exc websockets.exceptions.ConnectionClosed: WebSocket connection is closed: code = 1006 (connection closed abnormally [internal]) , no reason

[oliver-zehentleitner]

Can you provide some infos please:

• markets and channels you use to start the stream
• how often does it happen?
• version of the library
• does the error get catched and the stream restarts or does it stop?
• are you using the stream_buffer or do you provide a callback method/function?

thanks

[fsteckel]

• I am streaming all BTC related markets with channels depth and depth20. All streams are started separately and their ids kept in a list.

• This error happened three times in the last 5 days.

• version 1.9.1

• The stream does restart, however I am unsure from the logs whether this is unicorns work or mine, as my wrapper also checks for status 'alive' and last heartbeat and subsequently restarts.

• I am using the stream buffer.

[oliver-zehentleitner]

Is it possible to share the docker container with me? Could help me, i can reproduce the error...

[oliver-zehentleitner]

Still receiving this error? Would like to investigate it ...

[fsteckel]

Yes. I have a logfile (from nohup) with several stream related errors that I cannot fully comprehend. Is there any way I can get this to you?

[oliver-zehentleitner]

Under the "leave a comment" box is written "Attach files by dragging & dropping, selecting or pasting them" ... just upload it here!

[oliver-zehentleitner]

* The stream does restart, however I am unsure from the logs whether this is unicorns work or mine, as my wrapper also checks for status 'alive' and last heartbeat and subsequently restarts.

My goal for this lib is, that the library is managing all restarts - if you find a scenario that doesn’t reconnect please report it to me!

[oliver-zehentleitner]

Can you test this branch please, its using websockets 8.1 instead of 7.0:
pip install https://github.com/oliver-zehentleitner/unicorn-binance-websocket-api/tarball/websockets_bug --upgrade

the lib got a lot of commits related to this issue, maybe its solved now.