"ERROR:asyncio:Exception in callback _ProactorBasePipeTransport._call_connection_lost(None)" followed by "soundfile.LibsndfileError: System error."

[CircleCly]

Hi,

I tried installing vampnet on my Windows 11 machine. I was able to launch the app using the gradio UI, but when I use the example audio file and click on "Vamp", I first see the following error message:

Exception in callback _ProactorBasePipeTransport._call_connection_lost(None)
handle: <Handle _ProactorBasePipeTransport._call_connection_lost(None)>
Traceback (most recent call last):
  File "D:\UserFiles\Programming\Anaconda\envs\vampnet\lib\asyncio\events.py", line 80, in _run
    self._context.run(self._callback, *self._args)
  File "D:\UserFiles\Programming\Anaconda\envs\vampnet\lib\asyncio\proactor_events.py", line 162, in _call_connection_lost
    self._sock.shutdown(socket.SHUT_RDWR)
ConnectionResetError: [WinError 10054] An existing connection was forcibly closed by the remote host

and then after a few seconds I see

Traceback (most recent call last):
  File "D:\UserFiles\Programming\Anaconda\envs\vampnet\lib\site-packages\gradio\queueing.py", line 388, in call_prediction
    output = await route_utils.call_process_api(
  File "D:\UserFiles\Programming\Anaconda\envs\vampnet\lib\site-packages\gradio\route_utils.py", line 216, in call_process_api
    output = await app.get_blocks().process_api(
  File "D:\UserFiles\Programming\Anaconda\envs\vampnet\lib\site-packages\gradio\blocks.py", line 1555, in process_api
    result = await self.call_function(
  File "D:\UserFiles\Programming\Anaconda\envs\vampnet\lib\site-packages\gradio\blocks.py", line 1193, in call_function
    prediction = await anyio.to_thread.run_sync(
  File "D:\UserFiles\Programming\Anaconda\envs\vampnet\lib\site-packages\anyio\to_thread.py", line 33, in run_sync
    return await get_asynclib().run_sync_in_worker_thread(
  File "D:\UserFiles\Programming\Anaconda\envs\vampnet\lib\site-packages\anyio\_backends\_asyncio.py", line 877, in run_sync_in_worker_thread
    return await future
  File "D:\UserFiles\Programming\Anaconda\envs\vampnet\lib\site-packages\anyio\_backends\_asyncio.py", line 807, in run
    result = context.run(func, *args)
  File "D:\UserFiles\Programming\Anaconda\envs\vampnet\lib\site-packages\gradio\utils.py", line 654, in wrapper
    response = f(*args, **kwargs)
  File "D:\UserFiles\Academics\Berkeley\fa23\Research\WAM\vampnet\app.py", line 185, in vamp
    return _vamp(data, return_mask=True)
  File "D:\UserFiles\Academics\Berkeley\fa23\Research\WAM\vampnet\app.py", line 102, in _vamp
    mask, pmask.onset_mask(sig, z, interface, width=data[onset_mask_width])
  File "D:\UserFiles\Academics\Berkeley\fa23\Research\WAM\vampnet\vampnet\mask.py", line 201, in onset_mask
    sig.write(f.name)
  File "D:\UserFiles\Programming\Anaconda\envs\vampnet\lib\site-packages\audiotools\core\audio_signal.py", line 602, in write
    soundfile.write(str(audio_path), self.audio_data[0].numpy().T, self.sample_rate)
  File "D:\UserFiles\Programming\Anaconda\envs\vampnet\lib\site-packages\soundfile.py", line 343, in write
    with SoundFile(file, 'w', samplerate, channels,
  File "D:\UserFiles\Programming\Anaconda\envs\vampnet\lib\site-packages\soundfile.py", line 658, in __init__
    self._file = self._open(file, mode_int, closefd)
  File "D:\UserFiles\Programming\Anaconda\envs\vampnet\lib\site-packages\soundfile.py", line 1216, in _open
    raise LibsndfileError(err, prefix="Error opening {0!r}: ".format(self.name))
soundfile.LibsndfileError: Error opening 'C:\\Users\\circl\\AppData\\Local\\Temp\\tmptukdvdkr.wav': System error.

and an error occurs on the website interface. What could be causing this issue?

[hugofloresgarcia]

Hmm, this looks a bit like the issue in #12, since there seems to be an issue with my approach to temporary files on Windows. Could you try the fix mentioned in #12?

this could be it: https://stackoverflow.com/questions/23212435/permission-denied-to-write-to-my-temporary-file

looks like we're trying to open the file twice: once when NamedTemporaryFile() is created, and another in sig.write.

This solution from stackoverflow could work, you could give it a try!

import os
import tempfile


class CustomNamedTemporaryFile:
    """
    This custom implementation is needed because of the following limitation of tempfile.NamedTemporaryFile:

    > Whether the name can be used to open the file a second time, while the named temporary file is still open,
    > varies across platforms (it can be so used on Unix; it cannot on Windows NT or later).
    """
    def __init__(self, mode='wb', delete=True):
        self._mode = mode
        self._delete = delete

    def __enter__(self):
        # Generate a random temporary file name
        file_name = os.path.join(tempfile.gettempdir(), os.urandom(24).hex())
        # Ensure the file is created
        open(file_name, "x").close()
        # Open the file in the given mode
        self._tempFile = open(file_name, self._mode)
        return self._tempFile

    def __exit__(self, exc_type, exc_val, exc_tb):
        self._tempFile.close()
        if self._delete:
            os.remove(self._tempFile.name)