The semaphore timeout period has expired python

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Connection dying after a few minutes — Semaphore Timeout Error #924

Connection dying after a few minutes — Semaphore Timeout Error #924

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I got this error log after having a websocket client open for several minutes.

I’m receiving normal pings, and then some ‘\x92\xd8m\x9d’ and then websockets crashes.

[1616527748.531067][websockets.protocol][DEBUG] client - event = data_received() [1616527748.531067][websockets.protocol][DEBUG] client < Frame(fin=True, opcode=1, data=b'ping', rsv1=False, rsv2=False, rsv3=False) [1616527748.595066][websockets.protocol][DEBUG] client - event = data_received() [1616527748.5960674][websockets.protocol][DEBUG] client < Frame(fin=True, opcode=1, data=b'ping', rsv1=False, rsv2=False, rsv3=False) [1616527750.7327232][websockets.protocol][DEBUG] client >Frame(fin=True, opcode=9, data=b'\x92\xd8m\x9d', rsv1=False, rsv2=False, rsv3=False) [1616527769.9952965][websockets.protocol][DEBUG] client - event = connection_lost([WinError 121] Das Zeitlimit für die Semaphore wurde erreicht) [1616527769.9962957][websockets.protocol][DEBUG] client - state = CLOSED [1616527769.9962957][websockets.protocol][DEBUG] client x code = 1006, reason = [no reason] [1616527769.9972994][websockets.protocol][DEBUG] client - aborted pending ping: 92d86d9d [1616527770.003296][websockets.protocol][ERROR] Error in data transferTraceback (most recent call last): File "C:\…\PythonSoftwareFoundation.Python.3.9_qbz5n2kfra8p0\LocalCache\local-packages\Python39\site-packages\websockets\protocol.py", line 827, in transfer_data message = await self.read_message() File "C:\…\PythonSoftwareFoundation.Python.3.9_qbz5n2kfra8p0\LocalCache\local-packages\Python39\site-packages\websockets\protocol.py", line 895, in read_message frame = await self.read_data_frame(max_size=self.max_size) File "C:\…\PythonSoftwareFoundation.Python.3.9_qbz5n2kfra8p0\LocalCache\local-packages\Python39\site-packages\websockets\protocol.py", line 971, in read_data_frame frame = await self.read_frame(max_size) File "C:\…\PythonSoftwareFoundation.Python.3.9_qbz5n2kfra8p0\LocalCache\local-packages\Python39\site-packages\websockets\protocol.py", line 1047, in read_frame frame = await Frame.read( File "C:\…\PythonSoftwareFoundation.Python.3.9_qbz5n2kfra8p0\LocalCache\local-packages\Python39\site-packages\websockets\framing.py", line 105, in read data = await reader(2) File "C:\Program Files\WindowsApps\PythonSoftwareFoundation.Python.3.9_3.9.752.0_x64__qbz5n2kfra8p0\lib\asyncio\streams.py", line 723, in readexactly await self._wait_for_data('readexactly') File "C:\Program Files\WindowsApps\PythonSoftwareFoundation.Python.3.9_3.9.752.0_x64__qbz5n2kfra8p0\lib\asyncio\streams.py", line 517, in _wait_for_data await self._waiter File "C:\Program Files\WindowsApps\PythonSoftwareFoundation.Python.3.9_3.9.752.0_x64__qbz5n2kfra8p0\lib\asyncio\futures.py", line 284, in __await__ yield self # This tells Task to wait for completion. File "C:\Program Files\WindowsApps\PythonSoftwareFoundation.Python.3.9_3.9.752.0_x64__qbz5n2kfra8p0\lib\asyncio\tasks.py", line 328, in __wakeup future.result() File "C:\Program Files\WindowsApps\PythonSoftwareFoundation.Python.3.9_3.9.752.0_x64__qbz5n2kfra8p0\lib\asyncio\futures.py", line 201, in result raise self._exception File "C:\Program Files\WindowsApps\PythonSoftwareFoundation.Python.3.9_3.9.752.0_x64__qbz5n2kfra8p0\lib\asyncio\proactor_events.py", line 280, in _loop_reading data = fut.result() File "C:\Program Files\WindowsApps\PythonSoftwareFoundation.Python.3.9_3.9.752.0_x64__qbz5n2kfra8p0\lib\asyncio\windows_events.py", line 812, in _poll value = callback(transferred, key, ov) File "C:\Program Files\WindowsApps\PythonSoftwareFoundation.Python.3.9_3.9.752.0_x64__qbz5n2kfra8p0\lib\asyncio\windows_events.py", line 457, in finish_recv return ov.getresult() OSError: [WinError 121] Das Zeitlimit für die Semaphore wurde erreicht [1616527770.0102963][websockets.protocol][DEBUG] client ! failing CLOSED WebSocket connection with code 1011 [1616527770.0102963][websockets.protocol][DEBUG] client x closing TCP connection 

Is there a way to handle that exception or re-establish the connection in the meanwhile?

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[WinError 121] The semaphore timeout period has expired #40

[WinError 121] The semaphore timeout period has expired #40

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Such errors often appear in the output. However, this doesn’t seem to affect the quality of the connection.
Windows 10 Build 17692, Python 3.7.0

Fatal read error on pipe transport protocol: transport: Traceback (most recent call last): File "C:\. \Python37\lib\asyncio\proactor_events.py", line 255, in _loop_reading data = fut.result() File "C:\. \Python37\lib\asyncio\windows_events.py", line 732, in _poll value = callback(transferred, key, ov) File "C:\. \Python37\lib\asyncio\windows_events.py", line 428, in finish_recv return ov.getresult() OSError: [WinError 121] The semaphore timeout period has expired 

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OSError: [WinError 121] The semaphore timeout period has expired #5246

OSError: [WinError 121] The semaphore timeout period has expired #5246

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Problem Description

mitmdump throws this exception on the console

Traceback (most recent call last): File "C:\bin\Python-3.10.4\lib\asyncio\proactor_events.py", line 771, in _loop_self_reading f.result() # may raise File "C:\bin\Python-3.10.4\lib\asyncio\windows_events.py", line 817, in _poll value = callback(transferred, key, ov) File "C:\bin\Python-3.10.4\lib\asyncio\windows_events.py", line 462, in finish_recv return ov.getresult() OSError: [WinError 121] The semaphore timeout period has expired Please lodge a bug report at: https://github.com/mitmproxy/mitmproxy/issues 

Steps to reproduce the behavior:

mitmdump -s recordTraffic.py

System Information

Paste the output of «mitmproxy —version» here.
Mitmproxy: 8.0.0
Python: 3.10.4
OpenSSL: OpenSSL 1.1.1n 15 Mar 2022
Platform: Windows-10-10.0.19043-SP0

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Windows — event loop: [WinError 121] The semaphore timeout period has expired #4507

Windows — event loop: [WinError 121] The semaphore timeout period has expired #4507

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Make sure you are running the latest version of Home Assistant before reporting an issue.

You should only file an issue if you found a bug. Feature and enhancement requests should go in the Feature Requests section of our community forum:

Home Assistant release ( hass —version ):
0.33.0 (Windows 10)

Python release ( python3 —version ):
3.5.2

Component/platform:
Unknown

Description of problem:

I’ve started get errors in my HASS log since version 0.32.0 which now seems permanent in version 0.33.0

Expected:
Not to have errors

Problem-relevant configuration.yaml entries and steps to reproduce:

Traceback (if applicable):

16-11-21 17:34:26 homeassistant.core: Error doing job: Fatal read error on pipe transport Traceback (most recent call last): File "C:\Users\Alex\AppData\Local\Programs\Python\Python35-32\lib\asyncio\proactor_events.py", line 183, in _loop_reading data = fut.result() # deliver data later in "finally" clause File "C:\Users\Alex\AppData\Local\Programs\Python\Python35-32\lib\asyncio\futures.py", line 274, in result raise self._exception File "C:\Users\Alex\AppData\Local\Programs\Python\Python35-32\lib\asyncio\windows_events.py", line 697, in _poll value = callback(transferred, key, ov) File "C:\Users\Alex\AppData\Local\Programs\Python\Python35-32\lib\asyncio\windows_events.py", line 437, in finish_recv return ov.getresult() OSError: [WinError 121] The semaphore timeout period has expired 16-11-21 17:41:50 homeassistant.core: Error doing job: Fatal read error on pipe transport Traceback (most recent call last): File "C:\Users\Alex\AppData\Local\Programs\Python\Python35-32\lib\asyncio\proactor_events.py", line 183, in _loop_reading data = fut.result() # deliver data later in "finally" clause File "C:\Users\Alex\AppData\Local\Programs\Python\Python35-32\lib\asyncio\futures.py", line 274, in result raise self._exception File "C:\Users\Alex\AppData\Local\Programs\Python\Python35-32\lib\asyncio\windows_events.py", line 697, in _poll value = callback(transferred, key, ov) File "C:\Users\Alex\AppData\Local\Programs\Python\Python35-32\lib\asyncio\windows_events.py", line 437, in finish_recv return ov.getresult() OSError: [WinError 121] The semaphore timeout period has expired 16-11-21 17:42:48 homeassistant.core: Error doing job: Fatal read error on pipe transport Traceback (most recent call last): File "C:\Users\Alex\AppData\Local\Programs\Python\Python35-32\lib\asyncio\proactor_events.py", line 183, in _loop_reading data = fut.result() # deliver data later in "finally" clause File "C:\Users\Alex\AppData\Local\Programs\Python\Python35-32\lib\asyncio\futures.py", line 274, in result raise self._exception File "C:\Users\Alex\AppData\Local\Programs\Python\Python35-32\lib\asyncio\windows_events.py", line 697, in _poll value = callback(transferred, key, ov) File "C:\Users\Alex\AppData\Local\Programs\Python\Python35-32\lib\asyncio\windows_events.py", line 437, in finish_recv return ov.getresult() OSError: [WinError 121] The semaphore timeout period has expired 16-11-21 17:44:19 homeassistant.core: Error doing job: Fatal read error on pipe transport Traceback (most recent call last): File "C:\Users\Alex\AppData\Local\Programs\Python\Python35-32\lib\asyncio\proactor_events.py", line 183, in _loop_reading data = fut.result() # deliver data later in "finally" clause File "C:\Users\Alex\AppData\Local\Programs\Python\Python35-32\lib\asyncio\futures.py", line 274, in result raise self._exception File "C:\Users\Alex\AppData\Local\Programs\Python\Python35-32\lib\asyncio\windows_events.py", line 697, in _poll value = callback(transferred, key, ov) File "C:\Users\Alex\AppData\Local\Programs\Python\Python35-32\lib\asyncio\windows_events.py", line 437, in finish_recv return ov.getresult() OSError: [WinError 121] The semaphore timeout period has expired 

Additional info:

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