WebSocket error (and disconnect ws client) when connected via AP and STA mode.

[beyonlo]

I'm using ESP32-S3 with Micropython 1.19.1 with Microdot that I downloaded today. Older versions of Microdot has the same error.

Describe the bug

Traceback (most recent call last):
  File "microdot_asyncio.py", line 370, in dispatch_request
  File "microdot_asyncio.py", line 443, in _invoke_handler
  File "microdot_asyncio_websocket.py", line 97, in wrapper
  File "<stdin>", line 191, in ws_server
  File "microdot_asyncio_websocket.py", line 20, in receive
  File "microdot_asyncio_websocket.py", line 26, in send
  File "microdot_websocket.py", line 98, in _encode_websocket_frame
TypeError: unsupported types for __or__: 'int', 'bytes'

To Reproduce
Steps to reproduce the behavior:

Unfortunately I can't found exactly how to reproduce, because do not happen every time, but that happen just in moments that I'm using WebSocket connected via WiFi AP mode and WiFi Client mode. I mean, I'm using WebSocket connections simultaneously via IP 192.168.4.1 (AP) and via IP 192.168.43.143 (STA)

[Miguel Grinberg]

Is it relatively easy for you to reproduce this error? In that case, can I ask you to add some print statements that can help me understand what's going on here?

Right above line 20 of microdot_asyncio_websocket.py, add a print statement as follows:

    async def receive(self):
        while True:
            opcode, payload = await self._read_frame()
            send_opcode, data = self._process_websocket_frame(opcode, payload)
            if send_opcode:  # pragma: no cover
                print('opcode', opcode)  # <-- add this and the follow 3 prints
                print('payload', payload)
                print('send_opcode', send_opcode)
                print('data', data)
                await self.send(send_opcode, data)
            elif data:  # pragma: no branch
                return data

Then once you get the error, the stack trace should be preceded with four debugging lines that I'd like to see. Note that these prints may also trigger in cases where there is no error, so you may see a lot of noise in your log while your server is running.

[beyonlo]

Hello @miguelgrinberg

Follow the error with the prints as you requested:

opcode 9
payload b'PING'
send_opcode 10
data b'PING'
Traceback (most recent call last):
  File "microdot_asyncio.py", line 370, in dispatch_request
  File "microdot_asyncio.py", line 443, in _invoke_handler
  File "microdot_asyncio_websocket.py", line 101, in wrapper
  File "<stdin>", line 191, in ws_server
  File "microdot_asyncio_websocket.py", line 24, in receive
  File "microdot_asyncio_websocket.py", line 30, in send
  File "microdot_websocket.py", line 98, in _encode_websocket_frame
TypeError: unsupported types for __or__: 'int', 'bytes'

Thank you

[beyonlo]

@miguelgrinberg Just a fix information that I told you: that error do not happen just when are using ws simultaneously in AP and STA mode. That error happen when using just via AP too.

[Miguel Grinberg]

@beyonlo Thanks for all the details. Can you please update your microdot_websocket.py and microdot_asyncio_websocket.py files and try again? Hopefully you won't see the error anymore.

[beyonlo]

@miguelgrinberg I updated the microdot_websocket.py and microdot_asyncio_websocket.py and until now I have no erros anymore. 🥳

Thank you very much!