[rh:websockets] Migrate websockets to networking framework (#7720)

* Adds a basic WebSocket framework
* Introduces new minimum `websockets` version of 12.0
* Deprecates `WebSocketsWrapper`

Fixes https://github.com/yt-dlp/yt-dlp/issues/8439

Authored by: coletdjnz

yt_dlp/utils/_utils.py

@@ -1,5 +1,3 @@
-import asyncio
-import atexit
 import base64
 import binascii
 import calendar
@@ -54,7 +52,7 @@ from ..compat import (
     compat_os_name,
     compat_shlex_quote,
 )
-from ..dependencies import websockets, xattr
+from ..dependencies import xattr
 
 __name__ = __name__.rsplit('.', 1)[0]  # Pretend to be the parent module
 
@@ -4923,77 +4921,6 @@ class Config:
         return self.parser.parse_args(self.all_args)
 
 
-class WebSocketsWrapper:
-    """Wraps websockets module to use in non-async scopes"""
-    pool = None
-
-    def __init__(self, url, headers=None, connect=True):
-        self.loop = asyncio.new_event_loop()
-        # XXX: "loop" is deprecated
-        self.conn = websockets.connect(
-            url, extra_headers=headers, ping_interval=None,
-            close_timeout=float('inf'), loop=self.loop, ping_timeout=float('inf'))
-        if connect:
-            self.__enter__()
-        atexit.register(self.__exit__, None, None, None)
-
-    def __enter__(self):
-        if not self.pool:
-            self.pool = self.run_with_loop(self.conn.__aenter__(), self.loop)
-        return self
-
-    def send(self, *args):
-        self.run_with_loop(self.pool.send(*args), self.loop)
-
-    def recv(self, *args):
-        return self.run_with_loop(self.pool.recv(*args), self.loop)
-
-    def __exit__(self, type, value, traceback):
-        try:
-            return self.run_with_loop(self.conn.__aexit__(type, value, traceback), self.loop)
-        finally:
-            self.loop.close()
-            self._cancel_all_tasks(self.loop)
-
-    # taken from https://github.com/python/cpython/blob/3.9/Lib/asyncio/runners.py with modifications
-    # for contributors: If there's any new library using asyncio needs to be run in non-async, move these function out of this class
-    @staticmethod
-    def run_with_loop(main, loop):
-        if not asyncio.iscoroutine(main):
-            raise ValueError(f'a coroutine was expected, got {main!r}')
-
-        try:
-            return loop.run_until_complete(main)
-        finally:
-            loop.run_until_complete(loop.shutdown_asyncgens())
-            if hasattr(loop, 'shutdown_default_executor'):
-                loop.run_until_complete(loop.shutdown_default_executor())
-
-    @staticmethod
-    def _cancel_all_tasks(loop):
-        to_cancel = asyncio.all_tasks(loop)
-
-        if not to_cancel:
-            return
-
-        for task in to_cancel:
-            task.cancel()
-
-        # XXX: "loop" is removed in python 3.10+
-        loop.run_until_complete(
-            asyncio.gather(*to_cancel, loop=loop, return_exceptions=True))
-
-        for task in to_cancel:
-            if task.cancelled():
-                continue
-            if task.exception() is not None:
-                loop.call_exception_handler({
-                    'message': 'unhandled exception during asyncio.run() shutdown',
-                    'exception': task.exception(),
-                    'task': task,
-                })
-
-
 def merge_headers(*dicts):
     """Merge dicts of http headers case insensitively, prioritizing the latter ones"""
     return {k.title(): v for k, v in itertools.chain.from_iterable(map(dict.items, dicts))}