asyncio.base_futures.InvalidStateError: invalid state

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Environment

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Hardware

• Raspberry Pi

Operating System? (include version)

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Python Version Requirement

• I am using Python 3.5.3 or above

Exact Python Version?

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Pip Version?

3.6

UNICORN Binance WebSocket API Version?

latest

Description of your issue

Sorry, I don’t know what is this. It just throws a bug after some hours running. Any ideas? If it don’t help, feel free to delete the issue.

Exception in thread Thread-3:
Traceback (most recent call last):
  File "/usr/lib/python3.6/threading.py", line 916, in _bootstrap_inner
    self.run()
  File "/usr/lib/python3.6/threading.py", line 864, in run
    self._target(*self._args, **self._kwargs)
  File "/home/user/.local/lib/python3.6/site-packages/unicorn_binance_websocket_api/unicorn_binance_websocket_api_manager.py", line 142, in _create_stream_thread
    loop.run_until_complete(binance_websocket_api_socket.start_socket())
  File "/usr/lib/python3.6/asyncio/base_events.py", line 484, in run_until_complete
    return future.result()
  File "/home/user/.local/lib/python3.6/site-packages/unicorn_binance_websocket_api/unicorn_binance_websocket_api_socket.py", line 62, in start_socket
    received_stream_data_json = await websocket.receive()
  File "/home/user/.local/lib/python3.6/site-packages/unicorn_binance_websocket_api/unicorn_binance_websocket_api_connection.py", line 183, in receive
    received_data = await self.handler_binance_websocket_api_manager.websocket_list[self.stream_id].recv()
  File "/home/user/.local/lib/python3.6/site-packages/websockets/protocol.py", line 441, in recv
    self._put_message_waiter.set_result(None)
asyncio.base_futures.InvalidStateError: invalid state

[oliver-zehentleitner]

Great! I am closing this issue! Best regards!

[oliver-zehentleitner]

Very cool! 😃

To remind you: In this way you loose all data received during a down mysql database, because you have no error handling for such a case. If you work with the stream_buffer (working example: https://github.com/unicorn-data-analysis/unicorn-binance-websocket-api/blob/master/example_stream_buffer.py) you are able to avoid such loses… just a few lines of code and you can copy/paste. Just put your mysql code into the print stream buffer function to the print() section. thats all.

I would like to ask you, to run that script as it is for 2 more weeks to see if that bug is really caused the way we belief and is completely removed. I think this would help https://github.com/aaugustin/websockets/issues/634 - its the lib we are relying on for websocket operations and augustin is interested to investigate this issue.