--reload is returning OSError: WinError 10038 when file saved

[LizardLiang]

I'm currently working on a project with Fastapi and Hypercorn on Windows 11

I'm having trouble adding "reload" flag to Hypercorn.

Every time I save my file, I get an OSError like below

After I installed Hypercorn version 0.13.2, the problem is no longer exists, everything works as expected

However the version of 0.14.3 does not.

This is the command I used to start the app: hypercorn -b 0.0.0.0:5000 -k asyncio -w 1 --reload main:app

Can you please tell me how to fix this?

thanks,

[GeorgeLPerkins]

I'm having this issue also.

[godjangollc]

Is already fixed in pull request #148 , we must wait until they merge it into the main branch. I tested it on windows and issue is gone. You can test it and give me feedback in case I need to change anything. I hope it helps.

[iconberg]

I still have this WinError 10038 with 0.16.0 on Windows 10 and Python 3.9.7.
With 0.13.2 i can avoid this error.
hypercorn_error_10038.txt

[godjangollc]

I still have this WinError 10038 with 0.16.0 on Windows 10 and Python 3.9.7. With 0.13.2 i can avoid this error. hypercorn_error_10038.txt

version 0.15.0 should fix the main error, but @pgjones says it creates others issues... 0.16.0 reverted the pr where the error was tried to be fixed. I'm still saying, if @pgjones allows it, I will personally try to fix any error related to this issue. But worth nothing if it's rolled back as soon as there is any other error that I didn't see.

[joshft91]

I still have this WinError 10038 with 0.16.0 on Windows 10 and Python 3.9.7. With 0.13.2 i can avoid this error. hypercorn_error_10038.txt

version 0.15.0 should fix the main error, but @pgjones says it creates others issues... 0.16.0 reverted the pr where the error was tried to be fixed. I'm still saying, if @pgjones allows it, I will personally try to fix any error related to this issue. But worth nothing if it's rolled back as soon as there is any other error that I didn't see.

Just out of curiosity, where are we at with this issue? All issues seem to indicate the --reload problem is resolved, but I'm still getting the error described in this issue when using 0.16.0.

[ArchiDevil]

Getting this error in 0.17.3. The full callstack is

PS C:\Users\ArchiDevil\Desktop\hat\backend> hypercorn --debug --reload asgi:app                                                                          
[2024-06-20 19:40:36 +0300] [9332] [INFO] Running on http://127.0.0.1:8000 (CTRL + C to quit)
Accept failed on a socket
handle_traceback: Handle created at (most recent call last):
  File "C:\Users\ArchiDevil\AppData\Local\Programs\Python\Python311\Lib\asyncio\base_events.py", line 607, in run_forever
    self._run_once()
  File "C:\Users\ArchiDevil\AppData\Local\Programs\Python\Python311\Lib\asyncio\base_events.py", line 1914, in _run_once
    handle._run()
  File "C:\Users\ArchiDevil\AppData\Local\Programs\Python\Python311\Lib\asyncio\events.py", line 80, in _run
    self._context.run(self._callback, *self._args)
  File "C:\Users\ArchiDevil\Desktop\hat\backend\.venv\Lib\site-packages\hypercorn\asyncio\run.py", line 134, in worker_serve
    await asyncio.start_server(_server_callback, backlog=config.backlog, sock=sock)
  File "C:\Users\ArchiDevil\AppData\Local\Programs\Python\Python311\Lib\asyncio\streams.py", line 84, in start_server
    return await loop.create_server(factory, host, port, **kwds)
  File "C:\Users\ArchiDevil\AppData\Local\Programs\Python\Python311\Lib\asyncio\base_events.py", line 1547, in create_server
    server._start_serving()
  File "C:\Users\ArchiDevil\AppData\Local\Programs\Python\Python311\Lib\asyncio\base_events.py", line 316, in _start_serving
    self._loop._start_serving(
  File "C:\Users\ArchiDevil\AppData\Local\Programs\Python\Python311\Lib\asyncio\proactor_events.py", line 878, in _start_serving
    self.call_soon(loop)
socket: <asyncio.TransportSocket fd=608, family=2, type=1, proto=6, laddr=('127.0.0.1', 8000)>
Traceback (most recent call last):
  File "C:\Users\ArchiDevil\AppData\Local\Programs\Python\Python311\Lib\asyncio\proactor_events.py", line 860, in loop
    f = self._proactor.accept(sock)
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Users\ArchiDevil\AppData\Local\Programs\Python\Python311\Lib\asyncio\windows_events.py", line 583, in accept
    self._register_with_iocp(listener)
  File "C:\Users\ArchiDevil\AppData\Local\Programs\Python\Python311\Lib\asyncio\windows_events.py", line 752, in _register_with_iocp
    _overlapped.CreateIoCompletionPort(obj.fileno(), self._iocp, 0, 0)
OSError: [WinError 87] Параметр задан неверно
unhandled exception during asyncio.run() shutdown
task: <Task finished name='Task-2' coro=<Lifespan.handle_lifespan() done, defined at C:\Users\ArchiDevil\Desktop\hat\backend\.venv\Lib\site-packages\hypercorn\asyncio\lifespan.py:42> exception=LifespanFailureError('Lifespan failure in shutdown. \'Traceback (most recent call last):\n  File "C:\\Users\\ArchiDevil\\Desktop\\hat\\backend\\.venv\\Lib\\site-packages\\hypercorn\\asyncio\\run.py", line 234, in _run\n    runner.run(main(shutdown_trigger=shutdown_trigger))\n  File "C:\\Users\\ArchiDevil\\AppData\\Local\\Programs\\Python\\Python311\\Lib\\asyncio\\runners.py", line 118, in run\n    return self._loop.run_until_complete(task)\n           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\n  File "C:\\Users\\ArchiDevil\\AppData\\Local\\Programs\\Python\\Python311\\Lib\\asyncio\\base_events.py", line 653, in run_until_complete\n    return future.result()\n           ^^^^^^^^^^^^^^^\n  File "C:\\Users\\ArchiDevil\\Desktop\\hat\\backend\\.venv\\Lib\\site-packages\\hypercorn\\asyncio\\run.py", line 136, in worker_serve\n    bind = repr_socket_addr(sock.family, sock.getsockname())\n                                         ^^^^^^^^^^^^^^^^^^\nOSError: [WinError 10038] Сделана попытка выполнить операцию на объекте, не являющемся сокетом\n\nDuring handling of the above exception, another exception occurred:\n\nTraceback (most recent call last):\n  File "C:\\Users\\ArchiDevil\\Desktop\\hat\\backend\\.venv\\Lib\\site-packages\\starlette\\routing.py", line 741, in lifespan\n    await receive()\n  File "C:\\Users\\ArchiDevil\\Desktop\\hat\\backend\\.venv\\Lib\\site-packages\\hypercorn\\asyncio\\lifespan.py", line 110, in asgi_receive\n    return await self.app_queue.get()\n           ^^^^^^^^^^^^^^^^^^^^^^^^^^\n  File "C:\\Users\\ArchiDevil\\AppData\\Local\\Programs\\Python\\Python311\\Lib\\asyncio\\queues.py", line 158, in get\n    await getter\nasyncio.exceptions.CancelledError\n\'') created at C:\Users\ArchiDevil\Desktop\hat\backend\.venv\Lib\site-packages\hypercorn\asyncio\run.py:83>
Traceback (most recent call last):
  File "C:\Users\ArchiDevil\Desktop\hat\backend\.venv\Lib\site-packages\hypercorn\asyncio\run.py", line 234, in _run
    runner.run(main(shutdown_trigger=shutdown_trigger))
  File "C:\Users\ArchiDevil\AppData\Local\Programs\Python\Python311\Lib\asyncio\runners.py", line 118, in run
    return self._loop.run_until_complete(task)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Users\ArchiDevil\AppData\Local\Programs\Python\Python311\Lib\asyncio\base_events.py", line 653, in run_until_complete
    return future.result()
           ^^^^^^^^^^^^^^^
  File "C:\Users\ArchiDevil\Desktop\hat\backend\.venv\Lib\site-packages\hypercorn\asyncio\run.py", line 136, in worker_serve
    bind = repr_socket_addr(sock.family, sock.getsockname())
                                         ^^^^^^^^^^^^^^^^^^
OSError: [WinError 10038] Сделана попытка выполнить операцию на объекте, не являющемся сокетом

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "C:\Users\ArchiDevil\Desktop\hat\backend\.venv\Lib\site-packages\starlette\routing.py", line 741, in lifespan
    await receive()
  File "C:\Users\ArchiDevil\Desktop\hat\backend\.venv\Lib\site-packages\hypercorn\asyncio\lifespan.py", line 110, in asgi_receive
    return await self.app_queue.get()
           ^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Users\ArchiDevil\AppData\Local\Programs\Python\Python311\Lib\asyncio\queues.py", line 158, in get
    await getter
asyncio.exceptions.CancelledError

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "C:\Users\ArchiDevil\Desktop\hat\backend\.venv\Lib\site-packages\hypercorn\asyncio\lifespan.py", line 55, in handle_lifespan
    await self.app(
  File "C:\Users\ArchiDevil\Desktop\hat\backend\.venv\Lib\site-packages\hypercorn\app_wrappers.py", line 34, in __call__
    await self.app(scope, receive, send)
  File "C:\Users\ArchiDevil\Desktop\hat\backend\.venv\Lib\site-packages\fastapi\applications.py", line 1054, in __call__
    await super().__call__(scope, receive, send)
  File "C:\Users\ArchiDevil\Desktop\hat\backend\.venv\Lib\site-packages\starlette\applications.py", line 123, in __call__
    await self.middleware_stack(scope, receive, send)
  File "C:\Users\ArchiDevil\Desktop\hat\backend\.venv\Lib\site-packages\starlette\middleware\errors.py", line 151, in __call__
    await self.app(scope, receive, send)
  File "C:\Users\ArchiDevil\Desktop\hat\backend\.venv\Lib\site-packages\starlette\middleware\cors.py", line 77, in __call__
    await self.app(scope, receive, send)
  File "C:\Users\ArchiDevil\Desktop\hat\backend\.venv\Lib\site-packages\starlette\middleware\exceptions.py", line 51, in __call__
    await self.app(scope, receive, send)
  File "C:\Users\ArchiDevil\Desktop\hat\backend\.venv\Lib\site-packages\starlette\routing.py", line 756, in __call__
    await self.middleware_stack(scope, receive, send)
  File "C:\Users\ArchiDevil\Desktop\hat\backend\.venv\Lib\site-packages\starlette\routing.py", line 765, in app
    await self.lifespan(scope, receive, send)
  File "C:\Users\ArchiDevil\Desktop\hat\backend\.venv\Lib\site-packages\starlette\routing.py", line 745, in lifespan
    await send({"type": "lifespan.shutdown.failed", "message": exc_text})
  File "C:\Users\ArchiDevil\Desktop\hat\backend\.venv\Lib\site-packages\hypercorn\asyncio\lifespan.py", line 122, in asgi_send
    raise LifespanFailureError("shutdown", message.get("message", ""))
hypercorn.utils.LifespanFailureError: Lifespan failure in shutdown. 'Traceback (most recent call last):
  File "C:\Users\ArchiDevil\Desktop\hat\backend\.venv\Lib\site-packages\hypercorn\asyncio\run.py", line 234, in _run
    runner.run(main(shutdown_trigger=shutdown_trigger))
  File "C:\Users\ArchiDevil\AppData\Local\Programs\Python\Python311\Lib\asyncio\runners.py", line 118, in run
    return self._loop.run_until_complete(task)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Users\ArchiDevil\AppData\Local\Programs\Python\Python311\Lib\asyncio\base_events.py", line 653, in run_until_complete
    return future.result()
           ^^^^^^^^^^^^^^^
  File "C:\Users\ArchiDevil\Desktop\hat\backend\.venv\Lib\site-packages\hypercorn\asyncio\run.py", line 136, in worker_serve
    bind = repr_socket_addr(sock.family, sock.getsockname())
                                         ^^^^^^^^^^^^^^^^^^
OSError: [WinError 10038] Сделана попытка выполнить операцию на объекте, не являющемся сокетом

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "C:\Users\ArchiDevil\Desktop\hat\backend\.venv\Lib\site-packages\starlette\routing.py", line 741, in lifespan
    await receive()
  File "C:\Users\ArchiDevil\Desktop\hat\backend\.venv\Lib\site-packages\hypercorn\asyncio\lifespan.py", line 110, in asgi_receive
    return await self.app_queue.get()
           ^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Users\ArchiDevil\AppData\Local\Programs\Python\Python311\Lib\asyncio\queues.py", line 158, in get
    await getter
asyncio.exceptions.CancelledError
'
Process SpawnProcess-2:
Traceback (most recent call last):
  File "C:\Users\ArchiDevil\AppData\Local\Programs\Python\Python311\Lib\multiprocessing\process.py", line 314, in _bootstrap
    self.run()
    self._target(*self._args, **self._kwargs)
  File "C:\Users\ArchiDevil\Desktop\hat\backend\.venv\Lib\site-packages\hypercorn\asyncio\run.py", line 196, in asyncio_worker
    _run(
  File "C:\Users\ArchiDevil\Desktop\hat\backend\.venv\Lib\site-packages\hypercorn\asyncio\run.py", line 234, in _run
    runner.run(main(shutdown_trigger=shutdown_trigger))
  File "C:\Users\ArchiDevil\AppData\Local\Programs\Python\Python311\Lib\asyncio\runners.py", line 118, in run
    return self._loop.run_until_complete(task)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Users\ArchiDevil\AppData\Local\Programs\Python\Python311\Lib\asyncio\base_events.py", line 653, in run_until_complete
    return future.result()
           ^^^^^^^^^^^^^^^
  File "C:\Users\ArchiDevil\Desktop\hat\backend\.venv\Lib\site-packages\hypercorn\asyncio\run.py", line 136, in worker_serve
    bind = repr_socket_addr(sock.family, sock.getsockname())
                                         ^^^^^^^^^^^^^^^^^^
OSError: [WinError 10038] Сделана попытка выполнить операцию на объекте, не являющемся сокетом