Crash: 'Not enough data for satisfy transfer length header.'

[habys]

Before opening an issue make sure that there are no duplicates and that you are on the latest version.
Describe the bug
ERROR - Handle subscribe payload error, status 200 reason OK

To Reproduce
Leave this service running. Using a Sony TV with Google's OS and Youtube App

Expected behavior
No crashes

iSponsorBlockTV server (please complete the following information):

• OS: isponsorblocktv running on Linux as a systemd service in a venv
• Python version: Python 3.13.1

I saw this error three times yesterday when checking server logs but haven't noticed any ill effects. I have included this here for your information.

Jan 28 23:01:51 ultra-arikui youtube-sponsorblock[7490]: 2025-01-28 23:01:51,525 - iSponsorBlockTV-om5qk7crhbd15930adg378652a - ERROR - Handle subscribe payload error, status 200 reason OK
Jan 28 23:01:51 ultra-arikui youtube-sponsorblock[7490]: Traceback (most recent call last):
Jan 28 23:01:51 ultra-arikui youtube-sponsorblock[7490]:   File "/data/venv/isponsorblocktv/lib/python3.13/site-packages/aiohttp/client_proto.py", line 94, in connection_lost
Jan 28 23:01:51 ultra-arikui youtube-sponsorblock[7490]:     uncompleted = self._parser.feed_eof()
Jan 28 23:01:51 ultra-arikui youtube-sponsorblock[7490]:   File "aiohttp/_http_parser.pyx", line 507, in aiohttp._http_parser.HttpParser.feed_eof
Jan 28 23:01:51 ultra-arikui youtube-sponsorblock[7490]: aiohttp.http_exceptions.TransferEncodingError: 400, message:
Jan 28 23:01:51 ultra-arikui youtube-sponsorblock[7490]:   Not enough data for satisfy transfer length header.
Jan 28 23:01:51 ultra-arikui youtube-sponsorblock[7490]: The above exception was the direct cause of the following exception:
Jan 28 23:01:51 ultra-arikui youtube-sponsorblock[7490]: Traceback (most recent call last):
Jan 28 23:01:51 ultra-arikui youtube-sponsorblock[7490]:   File "/data/venv/isponsorblocktv/lib/python3.13/site-packages/pyytlounge/wrapper.py", line 468, in subscribe
Jan 28 23:01:51 ultra-arikui youtube-sponsorblock[7490]:     async for events in self._parse_event_chunks(
Jan 28 23:01:51 ultra-arikui youtube-sponsorblock[7490]:     ...<7 lines>...
Jan 28 23:01:51 ultra-arikui youtube-sponsorblock[7490]:             break
Jan 28 23:01:51 ultra-arikui youtube-sponsorblock[7490]:   File "/data/venv/isponsorblocktv/lib/python3.13/site-packages/pyytlounge/wrapper.py", line 344, in _parse_event_chunks
Jan 28 23:01:51 ultra-arikui youtube-sponsorblock[7490]:     async for line in lines:
Jan 28 23:01:51 ultra-arikui youtube-sponsorblock[7490]:     ...<10 lines>...
Jan 28 23:01:51 ultra-arikui youtube-sponsorblock[7490]:                 yield events
Jan 28 23:01:51 ultra-arikui youtube-sponsorblock[7490]:   File "/data/venv/isponsorblocktv/lib/python3.13/site-packages/pyytlounge/wrapper.py", line 142, in iter_response_lines
Jan 28 23:01:51 ultra-arikui youtube-sponsorblock[7490]:     line = await resp.readline()
Jan 28 23:01:51 ultra-arikui youtube-sponsorblock[7490]:            ^^^^^^^^^^^^^^^^^^^^^
Jan 28 23:01:51 ultra-arikui youtube-sponsorblock[7490]:   File "/data/venv/isponsorblocktv/lib/python3.13/site-packages/aiohttp/streams.py", line 317, in readline
Jan 28 23:01:51 ultra-arikui youtube-sponsorblock[7490]:     return await self.readuntil()
Jan 28 23:01:51 ultra-arikui youtube-sponsorblock[7490]:            ^^^^^^^^^^^^^^^^^^^^^^
Jan 28 23:01:51 ultra-arikui youtube-sponsorblock[7490]:   File "/data/venv/isponsorblocktv/lib/python3.13/site-packages/aiohttp/streams.py", line 351, in readuntil
Jan 28 23:01:51 ultra-arikui youtube-sponsorblock[7490]:     await self._wait("readuntil")
Jan 28 23:01:51 ultra-arikui youtube-sponsorblock[7490]:   File "/data/venv/isponsorblocktv/lib/python3.13/site-packages/aiohttp/streams.py", line 312, in _wait
Jan 28 23:01:51 ultra-arikui youtube-sponsorblock[7490]:     await waiter
Jan 28 23:01:51 ultra-arikui youtube-sponsorblock[7490]: aiohttp.client_exceptions.ClientPayloadError: Response payload is not completed: <TransferEncodingError: 400, message='Not enough data for satisfy transfer length header.'>

If there is some way I can capture the payload that is not being parsed correctly, or anything else I can do to be useful, please let me know.

[dmunozv04]

Thanks for opening an issue, sometimes the connection with YouTube is closed forcedly, but I haven't been able to locate the cause(s) of it. If the tool managed to reconnect, then it should be fine

[dmunozv04]

@habys did it crash completely or was it able to reconnect after the error?

[habys]

This is still happening; some days not at all. A few days ago it happened 5 times. I am not noticing any ill effects from the crashes. I could not tell that it is crashing from watching Youtube.

To answer your question, ever since I last updated and started the service (Jan 26th) it has kept the same PID through the stack traces.

[dmunozv04]

Thanks! I've also seen it happen myself, but it seems to recover itself from this error. I'll look into catching this exception upstream on https://github.com/FabioGNR/pyytlounge to not show it on logs

[dmunozv04]

This might also be due to the subscription watchdog killing the subscription in the middle of an event, and have nothing to do with upstream