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videollama2/lib/python3.10/site-packages/setuptools/__init__.py

@@ -0,0 +1,286 @@
+"""Extensions to the 'distutils' for large or complex distributions"""
+# mypy: disable_error_code=override
+# Command.reinitialize_command has an extra **kw param that distutils doesn't have
+# Can't disable on the exact line because distutils doesn't exists on Python 3.12
+# and mypy isn't aware of distutils_hack, causing distutils.core.Command to be Any,
+# and a [unused-ignore] to be raised on 3.12+
+
+from __future__ import annotations
+
+import functools
+import os
+import re
+import sys
+from abc import abstractmethod
+from collections.abc import Mapping
+from typing import TYPE_CHECKING, TypeVar, overload
+
+sys.path.extend(((vendor_path := os.path.join(os.path.dirname(os.path.dirname(__file__)), 'setuptools', '_vendor')) not in sys.path) * [vendor_path])  # fmt: skip
+# workaround for #4476
+sys.modules.pop('backports', None)
+
+import _distutils_hack.override  # noqa: F401
+
+from . import logging, monkey
+from .depends import Require
+from .discovery import PackageFinder, PEP420PackageFinder
+from .dist import Distribution
+from .extension import Extension
+from .version import __version__ as __version__
+from .warnings import SetuptoolsDeprecationWarning
+
+import distutils.core
+from distutils.errors import DistutilsOptionError
+
+__all__ = [
+    'setup',
+    'Distribution',
+    'Command',
+    'Extension',
+    'Require',
+    'SetuptoolsDeprecationWarning',
+    'find_packages',
+    'find_namespace_packages',
+]
+
+_CommandT = TypeVar("_CommandT", bound="_Command")
+
+bootstrap_install_from = None
+
+find_packages = PackageFinder.find
+find_namespace_packages = PEP420PackageFinder.find
+
+
+def _install_setup_requires(attrs):
+    # Note: do not use `setuptools.Distribution` directly, as
+    # our PEP 517 backend patch `distutils.core.Distribution`.
+    class MinimalDistribution(distutils.core.Distribution):
+        """
+        A minimal version of a distribution for supporting the
+        fetch_build_eggs interface.
+        """
+
+        def __init__(self, attrs: Mapping[str, object]) -> None:
+            _incl = 'dependency_links', 'setup_requires'
+            filtered = {k: attrs[k] for k in set(_incl) & set(attrs)}
+            super().__init__(filtered)
+            # Prevent accidentally triggering discovery with incomplete set of attrs
+            self.set_defaults._disable()
+
+        def _get_project_config_files(self, filenames=None):
+            """Ignore ``pyproject.toml``, they are not related to setup_requires"""
+            try:
+                cfg, _toml = super()._split_standard_project_metadata(filenames)
+            except Exception:
+                return filenames, ()
+            return cfg, ()
+
+        def finalize_options(self):
+            """
+            Disable finalize_options to avoid building the working set.
+            Ref #2158.
+            """
+
+    dist = MinimalDistribution(attrs)
+
+    # Honor setup.cfg's options.
+    dist.parse_config_files(ignore_option_errors=True)
+    if dist.setup_requires:
+        _fetch_build_eggs(dist)
+
+
+def _fetch_build_eggs(dist: Distribution):
+    try:
+        dist.fetch_build_eggs(dist.setup_requires)
+    except Exception as ex:
+        msg = """
+        It is possible a package already installed in your system
+        contains an version that is invalid according to PEP 440.
+        You can try `pip install --use-pep517` as a workaround for this problem,
+        or rely on a new virtual environment.
+
+        If the problem refers to a package that is not installed yet,
+        please contact that package's maintainers or distributors.
+        """
+        if "InvalidVersion" in ex.__class__.__name__:
+            if hasattr(ex, "add_note"):
+                ex.add_note(msg)  # PEP 678
+            else:
+                dist.announce(f"\n{msg}\n")
+        raise
+
+
+def setup(**attrs):
+    logging.configure()
+    # Make sure we have any requirements needed to interpret 'attrs'.
+    _install_setup_requires(attrs)
+    return distutils.core.setup(**attrs)
+
+
+setup.__doc__ = distutils.core.setup.__doc__
+
+if TYPE_CHECKING:
+    # Work around a mypy issue where type[T] can't be used as a base: https://github.com/python/mypy/issues/10962
+    from distutils.core import Command as _Command
+else:
+    _Command = monkey.get_unpatched(distutils.core.Command)
+
+
+class Command(_Command):
+    """
+    Setuptools internal actions are organized using a *command design pattern*.
+    This means that each action (or group of closely related actions) executed during
+    the build should be implemented as a ``Command`` subclass.
+
+    These commands are abstractions and do not necessarily correspond to a command that
+    can (or should) be executed via a terminal, in a CLI fashion (although historically
+    they would).
+
+    When creating a new command from scratch, custom defined classes **SHOULD** inherit
+    from ``setuptools.Command`` and implement a few mandatory methods.
+    Between these mandatory methods, are listed:
+    :meth:`initialize_options`, :meth:`finalize_options` and :meth:`run`.
+
+    A useful analogy for command classes is to think of them as subroutines with local
+    variables called "options".  The options are "declared" in :meth:`initialize_options`
+    and "defined" (given their final values, aka "finalized") in :meth:`finalize_options`,
+    both of which must be defined by every command class. The "body" of the subroutine,
+    (where it does all the work) is the :meth:`run` method.
+    Between :meth:`initialize_options` and :meth:`finalize_options`, ``setuptools`` may set
+    the values for options/attributes based on user's input (or circumstance),
+    which means that the implementation should be careful to not overwrite values in
+    :meth:`finalize_options` unless necessary.
+
+    Please note that other commands (or other parts of setuptools) may also overwrite
+    the values of the command's options/attributes multiple times during the build
+    process.
+    Therefore it is important to consistently implement :meth:`initialize_options` and
+    :meth:`finalize_options`. For example, all derived attributes (or attributes that
+    depend on the value of other attributes) **SHOULD** be recomputed in
+    :meth:`finalize_options`.
+
+    When overwriting existing commands, custom defined classes **MUST** abide by the
+    same APIs implemented by the original class. They also **SHOULD** inherit from the
+    original class.
+    """
+
+    command_consumes_arguments = False
+    distribution: Distribution  # override distutils.dist.Distribution with setuptools.dist.Distribution
+
+    def __init__(self, dist: Distribution, **kw) -> None:
+        """
+        Construct the command for dist, updating
+        vars(self) with any keyword parameters.
+        """
+        super().__init__(dist)
+        vars(self).update(kw)
+
+    def _ensure_stringlike(self, option, what, default=None):
+        val = getattr(self, option)
+        if val is None:
+            setattr(self, option, default)
+            return default
+        elif not isinstance(val, str):
+            raise DistutilsOptionError(f"'{option}' must be a {what} (got `{val}`)")
+        return val
+
+    def ensure_string_list(self, option: str) -> None:
+        r"""Ensure that 'option' is a list of strings.  If 'option' is
+        currently a string, we split it either on /,\s*/ or /\s+/, so
+        "foo bar baz", "foo,bar,baz", and "foo,   bar baz" all become
+        ["foo", "bar", "baz"].
+
+        ..
+           TODO: This method seems to be similar to the one in ``distutils.cmd``
+           Probably it is just here for backward compatibility with old Python versions?
+
+        :meta private:
+        """
+        val = getattr(self, option)
+        if val is None:
+            return
+        elif isinstance(val, str):
+            setattr(self, option, re.split(r',\s*|\s+', val))
+        else:
+            if isinstance(val, list):
+                ok = all(isinstance(v, str) for v in val)
+            else:
+                ok = False
+            if not ok:
+                raise DistutilsOptionError(
+                    f"'{option}' must be a list of strings (got {val!r})"
+                )
+
+    @overload
+    def reinitialize_command(
+        self, command: str, reinit_subcommands: bool = False, **kw
+    ) -> _Command: ...
+    @overload
+    def reinitialize_command(
+        self, command: _CommandT, reinit_subcommands: bool = False, **kw
+    ) -> _CommandT: ...
+    def reinitialize_command(
+        self, command: str | _Command, reinit_subcommands: bool = False, **kw
+    ) -> _Command:
+        cmd = _Command.reinitialize_command(self, command, reinit_subcommands)
+        vars(cmd).update(kw)
+        return cmd  # pyright: ignore[reportReturnType] # pypa/distutils#307
+
+    @abstractmethod
+    def initialize_options(self) -> None:
+        """
+        Set or (reset) all options/attributes/caches used by the command
+        to their default values. Note that these values may be overwritten during
+        the build.
+        """
+        raise NotImplementedError
+
+    @abstractmethod
+    def finalize_options(self) -> None:
+        """
+        Set final values for all options/attributes used by the command.
+        Most of the time, each option/attribute/cache should only be set if it does not
+        have any value yet (e.g. ``if self.attr is None: self.attr = val``).
+        """
+        raise NotImplementedError
+
+    @abstractmethod
+    def run(self) -> None:
+        """
+        Execute the actions intended by the command.
+        (Side effects **SHOULD** only take place when :meth:`run` is executed,
+        for example, creating new files or writing to the terminal output).
+        """
+        raise NotImplementedError
+
+
+def _find_all_simple(path):
+    """
+    Find all files under 'path'
+    """
+    results = (
+        os.path.join(base, file)
+        for base, dirs, files in os.walk(path, followlinks=True)
+        for file in files
+    )
+    return filter(os.path.isfile, results)
+
+
+def findall(dir=os.curdir):
+    """
+    Find all files under 'dir' and return the list of full filenames.
+    Unless dir is '.', return full filenames with dir prepended.
+    """
+    files = _find_all_simple(dir)
+    if dir == os.curdir:
+        make_rel = functools.partial(os.path.relpath, start=dir)
+        files = map(make_rel, files)
+    return list(files)
+
+
+class sic(str):
+    """Treat this string as-is (https://en.wikipedia.org/wiki/Sic)"""
+
+
+# Apply monkey patches
+monkey.patch_all()

videollama2/lib/python3.10/site-packages/setuptools/_shutil.py

@@ -0,0 +1,53 @@
+"""Convenience layer on top of stdlib's shutil and os"""
+
+import os
+import stat
+from typing import Callable, TypeVar
+
+from .compat import py311
+
+from distutils import log
+
+try:
+    from os import chmod  # pyright: ignore[reportAssignmentType]
+    # Losing type-safety w/ pyright, but that's ok
+except ImportError:  # pragma: no cover
+    # Jython compatibility
+    def chmod(*args: object, **kwargs: object) -> None:  # type: ignore[misc] # Mypy reuses the imported definition anyway
+        pass
+
+
+_T = TypeVar("_T")
+
+
+def attempt_chmod_verbose(path, mode):
+    log.debug("changing mode of %s to %o", path, mode)
+    try:
+        chmod(path, mode)
+    except OSError as e:  # pragma: no cover
+        log.debug("chmod failed: %s", e)
+
+
+# Must match shutil._OnExcCallback
+def _auto_chmod(
+    func: Callable[..., _T], arg: str, exc: BaseException
+) -> _T:  # pragma: no cover
+    """shutils onexc callback to automatically call chmod for certain functions."""
+    # Only retry for scenarios known to have an issue
+    if func in [os.unlink, os.remove] and os.name == 'nt':
+        attempt_chmod_verbose(arg, stat.S_IWRITE)
+        return func(arg)
+    raise exc
+
+
+def rmtree(path, ignore_errors=False, onexc=_auto_chmod):
+    """
+    Similar to ``shutil.rmtree`` but automatically executes ``chmod``
+    for well know Windows failure scenarios.
+    """
+    return py311.shutil_rmtree(path, ignore_errors, onexc)
+
+
+def rmdir(path, **opts):
+    if os.path.isdir(path):
+        rmtree(path, **opts)

videollama2/lib/python3.10/site-packages/setuptools/version.py

@@ -0,0 +1,6 @@
+from ._importlib import metadata
+
+try:
+    __version__ = metadata.version('setuptools') or '0.dev0+unknown'
+except Exception:
+    __version__ = '0.dev0+unknown'

videollama2/lib/python3.10/site-packages/websockets/auth.py

@@ -0,0 +1,4 @@
+from __future__ import annotations
+
+# See #940 for why lazy_import isn't used here for backwards compatibility.
+from .legacy.auth import *

videollama2/lib/python3.10/site-packages/websockets/connection.py

@@ -0,0 +1,13 @@
+from __future__ import annotations
+
+import warnings
+
+# lazy_import doesn't support this use case.
+from .protocol import SEND_EOF, Protocol as Connection, Side, State  # noqa: F401
+
+
+warnings.warn(
+    "websockets.connection was renamed to websockets.protocol "
+    "and Connection was renamed to Protocol",
+    DeprecationWarning,
+)

videollama2/lib/python3.10/site-packages/websockets/datastructures.py

@@ -0,0 +1,200 @@
+from __future__ import annotations
+
+import sys
+from typing import (
+    Any,
+    Dict,
+    Iterable,
+    Iterator,
+    List,
+    Mapping,
+    MutableMapping,
+    Tuple,
+    Union,
+)
+
+
+if sys.version_info[:2] >= (3, 8):
+    from typing import Protocol
+else:  # pragma: no cover
+    Protocol = object  # mypy will report errors on Python 3.7.
+
+
+__all__ = ["Headers", "HeadersLike", "MultipleValuesError"]
+
+
+class MultipleValuesError(LookupError):
+    """
+    Exception raised when :class:`Headers` has more than one value for a key.
+
+    """
+
+    def __str__(self) -> str:
+        # Implement the same logic as KeyError_str in Objects/exceptions.c.
+        if len(self.args) == 1:
+            return repr(self.args[0])
+        return super().__str__()
+
+
+class Headers(MutableMapping[str, str]):
+    """
+    Efficient data structure for manipulating HTTP headers.
+
+    A :class:`list` of ``(name, values)`` is inefficient for lookups.
+
+    A :class:`dict` doesn't suffice because header names are case-insensitive
+    and multiple occurrences of headers with the same name are possible.
+
+    :class:`Headers` stores HTTP headers in a hybrid data structure to provide
+    efficient insertions and lookups while preserving the original data.
+
+    In order to account for multiple values with minimal hassle,
+    :class:`Headers` follows this logic:
+
+    - When getting a header with ``headers[name]``:
+        - if there's no value, :exc:`KeyError` is raised;
+        - if there's exactly one value, it's returned;
+        - if there's more than one value, :exc:`MultipleValuesError` is raised.
+
+    - When setting a header with ``headers[name] = value``, the value is
+      appended to the list of values for that header.
+
+    - When deleting a header with ``del headers[name]``, all values for that
+      header are removed (this is slow).
+
+    Other methods for manipulating headers are consistent with this logic.
+
+    As long as no header occurs multiple times, :class:`Headers` behaves like
+    :class:`dict`, except keys are lower-cased to provide case-insensitivity.
+
+    Two methods support manipulating multiple values explicitly:
+
+    - :meth:`get_all` returns a list of all values for a header;
+    - :meth:`raw_items` returns an iterator of ``(name, values)`` pairs.
+
+    """
+
+    __slots__ = ["_dict", "_list"]
+
+    # Like dict, Headers accepts an optional "mapping or iterable" argument.
+    def __init__(self, *args: HeadersLike, **kwargs: str) -> None:
+        self._dict: Dict[str, List[str]] = {}
+        self._list: List[Tuple[str, str]] = []
+        self.update(*args, **kwargs)
+
+    def __str__(self) -> str:
+        return "".join(f"{key}: {value}\r\n" for key, value in self._list) + "\r\n"
+
+    def __repr__(self) -> str:
+        return f"{self.__class__.__name__}({self._list!r})"
+
+    def copy(self) -> Headers:
+        copy = self.__class__()
+        copy._dict = self._dict.copy()
+        copy._list = self._list.copy()
+        return copy
+
+    def serialize(self) -> bytes:
+        # Since headers only contain ASCII characters, we can keep this simple.
+        return str(self).encode()
+
+    # Collection methods
+
+    def __contains__(self, key: object) -> bool:
+        return isinstance(key, str) and key.lower() in self._dict
+
+    def __iter__(self) -> Iterator[str]:
+        return iter(self._dict)
+
+    def __len__(self) -> int:
+        return len(self._dict)
+
+    # MutableMapping methods
+
+    def __getitem__(self, key: str) -> str:
+        value = self._dict[key.lower()]
+        if len(value) == 1:
+            return value[0]
+        else:
+            raise MultipleValuesError(key)
+
+    def __setitem__(self, key: str, value: str) -> None:
+        self._dict.setdefault(key.lower(), []).append(value)
+        self._list.append((key, value))
+
+    def __delitem__(self, key: str) -> None:
+        key_lower = key.lower()
+        self._dict.__delitem__(key_lower)
+        # This is inefficient. Fortunately deleting HTTP headers is uncommon.
+        self._list = [(k, v) for k, v in self._list if k.lower() != key_lower]
+
+    def __eq__(self, other: Any) -> bool:
+        if not isinstance(other, Headers):
+            return NotImplemented
+        return self._dict == other._dict
+
+    def clear(self) -> None:
+        """
+        Remove all headers.
+
+        """
+        self._dict = {}
+        self._list = []
+
+    def update(self, *args: HeadersLike, **kwargs: str) -> None:
+        """
+        Update from a :class:`Headers` instance and/or keyword arguments.
+
+        """
+        args = tuple(
+            arg.raw_items() if isinstance(arg, Headers) else arg for arg in args
+        )
+        super().update(*args, **kwargs)
+
+    # Methods for handling multiple values
+
+    def get_all(self, key: str) -> List[str]:
+        """
+        Return the (possibly empty) list of all values for a header.
+
+        Args:
+            key: header name.
+
+        """
+        return self._dict.get(key.lower(), [])
+
+    def raw_items(self) -> Iterator[Tuple[str, str]]:
+        """
+        Return an iterator of all values as ``(name, value)`` pairs.
+
+        """
+        return iter(self._list)
+
+
+# copy of _typeshed.SupportsKeysAndGetItem.
+class SupportsKeysAndGetItem(Protocol):  # pragma: no cover
+    """
+    Dict-like types with ``keys() -> str`` and ``__getitem__(key: str) -> str`` methods.
+
+    """
+
+    def keys(self) -> Iterable[str]:
+        ...
+
+    def __getitem__(self, key: str) -> str:
+        ...
+
+
+HeadersLike = Union[
+    Headers,
+    Mapping[str, str],
+    Iterable[Tuple[str, str]],
+    SupportsKeysAndGetItem,
+]
+"""
+Types accepted where :class:`Headers` is expected.
+
+In addition to :class:`Headers` itself, this includes dict-like types where both
+keys and values are :class:`str`.
+
+"""

videollama2/lib/python3.10/site-packages/websockets/extensions/__init__.py

@@ -0,0 +1,4 @@
+from .base import *
+
+
+__all__ = ["Extension", "ClientExtensionFactory", "ServerExtensionFactory"]

videollama2/lib/python3.10/site-packages/websockets/extensions/base.py

@@ -0,0 +1,133 @@
+from __future__ import annotations
+
+from typing import List, Optional, Sequence, Tuple
+
+from .. import frames
+from ..typing import ExtensionName, ExtensionParameter
+
+
+__all__ = ["Extension", "ClientExtensionFactory", "ServerExtensionFactory"]
+
+
+class Extension:
+    """
+    Base class for extensions.
+
+    """
+
+    name: ExtensionName
+    """Extension identifier."""
+
+    def decode(
+        self,
+        frame: frames.Frame,
+        *,
+        max_size: Optional[int] = None,
+    ) -> frames.Frame:
+        """
+        Decode an incoming frame.
+
+        Args:
+            frame (Frame): incoming frame.
+            max_size: maximum payload size in bytes.
+
+        Returns:
+            Frame: Decoded frame.
+
+        Raises:
+            PayloadTooBig: if decoding the payload exceeds ``max_size``.
+
+        """
+        raise NotImplementedError
+
+    def encode(self, frame: frames.Frame) -> frames.Frame:
+        """
+        Encode an outgoing frame.
+
+        Args:
+            frame (Frame): outgoing frame.
+
+        Returns:
+            Frame: Encoded frame.
+
+        """
+        raise NotImplementedError
+
+
+class ClientExtensionFactory:
+    """
+    Base class for client-side extension factories.
+
+    """
+
+    name: ExtensionName
+    """Extension identifier."""
+
+    def get_request_params(self) -> List[ExtensionParameter]:
+        """
+        Build parameters to send to the server for this extension.
+
+        Returns:
+            List[ExtensionParameter]: Parameters to send to the server.
+
+        """
+        raise NotImplementedError
+
+    def process_response_params(
+        self,
+        params: Sequence[ExtensionParameter],
+        accepted_extensions: Sequence[Extension],
+    ) -> Extension:
+        """
+        Process parameters received from the server.
+
+        Args:
+            params (Sequence[ExtensionParameter]): parameters received from
+                the server for this extension.
+            accepted_extensions (Sequence[Extension]): list of previously
+                accepted extensions.
+
+        Returns:
+            Extension: An extension instance.
+
+        Raises:
+            NegotiationError: if parameters aren't acceptable.
+
+        """
+        raise NotImplementedError
+
+
+class ServerExtensionFactory:
+    """
+    Base class for server-side extension factories.
+
+    """
+
+    name: ExtensionName
+    """Extension identifier."""
+
+    def process_request_params(
+        self,
+        params: Sequence[ExtensionParameter],
+        accepted_extensions: Sequence[Extension],
+    ) -> Tuple[List[ExtensionParameter], Extension]:
+        """
+        Process parameters received from the client.
+
+        Args:
+            params (Sequence[ExtensionParameter]): parameters received from
+                the client for this extension.
+            accepted_extensions (Sequence[Extension]): list of previously
+                accepted extensions.
+
+        Returns:
+            Tuple[List[ExtensionParameter], Extension]: To accept the offer,
+            parameters to send to the client for this extension and an
+            extension instance.
+
+        Raises:
+            NegotiationError: to reject the offer, if parameters received from
+                the client aren't acceptable.
+
+        """
+        raise NotImplementedError

videollama2/lib/python3.10/site-packages/websockets/extensions/permessage_deflate.py

@@ -0,0 +1,660 @@
+from __future__ import annotations
+
+import dataclasses
+import zlib
+from typing import Any, Dict, List, Optional, Sequence, Tuple, Union
+
+from .. import exceptions, frames
+from ..typing import ExtensionName, ExtensionParameter
+from .base import ClientExtensionFactory, Extension, ServerExtensionFactory
+
+
+__all__ = [
+    "PerMessageDeflate",
+    "ClientPerMessageDeflateFactory",
+    "enable_client_permessage_deflate",
+    "ServerPerMessageDeflateFactory",
+    "enable_server_permessage_deflate",
+]
+
+_EMPTY_UNCOMPRESSED_BLOCK = b"\x00\x00\xff\xff"
+
+_MAX_WINDOW_BITS_VALUES = [str(bits) for bits in range(8, 16)]
+
+
+class PerMessageDeflate(Extension):
+    """
+    Per-Message Deflate extension.
+
+    """
+
+    name = ExtensionName("permessage-deflate")
+
+    def __init__(
+        self,
+        remote_no_context_takeover: bool,
+        local_no_context_takeover: bool,
+        remote_max_window_bits: int,
+        local_max_window_bits: int,
+        compress_settings: Optional[Dict[Any, Any]] = None,
+    ) -> None:
+        """
+        Configure the Per-Message Deflate extension.
+
+        """
+        if compress_settings is None:
+            compress_settings = {}
+
+        assert remote_no_context_takeover in [False, True]
+        assert local_no_context_takeover in [False, True]
+        assert 8 <= remote_max_window_bits <= 15
+        assert 8 <= local_max_window_bits <= 15
+        assert "wbits" not in compress_settings
+
+        self.remote_no_context_takeover = remote_no_context_takeover
+        self.local_no_context_takeover = local_no_context_takeover
+        self.remote_max_window_bits = remote_max_window_bits
+        self.local_max_window_bits = local_max_window_bits
+        self.compress_settings = compress_settings
+
+        if not self.remote_no_context_takeover:
+            self.decoder = zlib.decompressobj(wbits=-self.remote_max_window_bits)
+
+        if not self.local_no_context_takeover:
+            self.encoder = zlib.compressobj(
+                wbits=-self.local_max_window_bits, **self.compress_settings
+            )
+
+        # To handle continuation frames properly, we must keep track of
+        # whether that initial frame was encoded.
+        self.decode_cont_data = False
+        # There's no need for self.encode_cont_data because we always encode
+        # outgoing frames, so it would always be True.
+
+    def __repr__(self) -> str:
+        return (
+            f"PerMessageDeflate("
+            f"remote_no_context_takeover={self.remote_no_context_takeover}, "
+            f"local_no_context_takeover={self.local_no_context_takeover}, "
+            f"remote_max_window_bits={self.remote_max_window_bits}, "
+            f"local_max_window_bits={self.local_max_window_bits})"
+        )
+
+    def decode(
+        self,
+        frame: frames.Frame,
+        *,
+        max_size: Optional[int] = None,
+    ) -> frames.Frame:
+        """
+        Decode an incoming frame.
+
+        """
+        # Skip control frames.
+        if frame.opcode in frames.CTRL_OPCODES:
+            return frame
+
+        # Handle continuation data frames:
+        # - skip if the message isn't encoded
+        # - reset "decode continuation data" flag if it's a final frame
+        if frame.opcode is frames.OP_CONT:
+            if not self.decode_cont_data:
+                return frame
+            if frame.fin:
+                self.decode_cont_data = False
+
+        # Handle text and binary data frames:
+        # - skip if the message isn't encoded
+        # - unset the rsv1 flag on the first frame of a compressed message
+        # - set "decode continuation data" flag if it's a non-final frame
+        else:
+            if not frame.rsv1:
+                return frame
+            frame = dataclasses.replace(frame, rsv1=False)
+            if not frame.fin:
+                self.decode_cont_data = True
+
+            # Re-initialize per-message decoder.
+            if self.remote_no_context_takeover:
+                self.decoder = zlib.decompressobj(wbits=-self.remote_max_window_bits)
+
+        # Uncompress data. Protect against zip bombs by preventing zlib from
+        # decompressing more than max_length bytes (except when the limit is
+        # disabled with max_size = None).
+        data = frame.data
+        if frame.fin:
+            data += _EMPTY_UNCOMPRESSED_BLOCK
+        max_length = 0 if max_size is None else max_size
+        try:
+            data = self.decoder.decompress(data, max_length)
+        except zlib.error as exc:
+            raise exceptions.ProtocolError("decompression failed") from exc
+        if self.decoder.unconsumed_tail:
+            raise exceptions.PayloadTooBig(f"over size limit (? > {max_size} bytes)")
+
+        # Allow garbage collection of the decoder if it won't be reused.
+        if frame.fin and self.remote_no_context_takeover:
+            del self.decoder
+
+        return dataclasses.replace(frame, data=data)
+
+    def encode(self, frame: frames.Frame) -> frames.Frame:
+        """
+        Encode an outgoing frame.
+
+        """
+        # Skip control frames.
+        if frame.opcode in frames.CTRL_OPCODES:
+            return frame
+
+        # Since we always encode messages, there's no "encode continuation
+        # data" flag similar to "decode continuation data" at this time.
+
+        if frame.opcode is not frames.OP_CONT:
+            # Set the rsv1 flag on the first frame of a compressed message.
+            frame = dataclasses.replace(frame, rsv1=True)
+            # Re-initialize per-message decoder.
+            if self.local_no_context_takeover:
+                self.encoder = zlib.compressobj(
+                    wbits=-self.local_max_window_bits, **self.compress_settings
+                )
+
+        # Compress data.
+        data = self.encoder.compress(frame.data) + self.encoder.flush(zlib.Z_SYNC_FLUSH)
+        if frame.fin and data.endswith(_EMPTY_UNCOMPRESSED_BLOCK):
+            data = data[:-4]
+
+        # Allow garbage collection of the encoder if it won't be reused.
+        if frame.fin and self.local_no_context_takeover:
+            del self.encoder
+
+        return dataclasses.replace(frame, data=data)
+
+
+def _build_parameters(
+    server_no_context_takeover: bool,
+    client_no_context_takeover: bool,
+    server_max_window_bits: Optional[int],
+    client_max_window_bits: Optional[Union[int, bool]],
+) -> List[ExtensionParameter]:
+    """
+    Build a list of ``(name, value)`` pairs for some compression parameters.
+
+    """
+    params: List[ExtensionParameter] = []
+    if server_no_context_takeover:
+        params.append(("server_no_context_takeover", None))
+    if client_no_context_takeover:
+        params.append(("client_no_context_takeover", None))
+    if server_max_window_bits:
+        params.append(("server_max_window_bits", str(server_max_window_bits)))
+    if client_max_window_bits is True:  # only in handshake requests
+        params.append(("client_max_window_bits", None))
+    elif client_max_window_bits:
+        params.append(("client_max_window_bits", str(client_max_window_bits)))
+    return params
+
+
+def _extract_parameters(
+    params: Sequence[ExtensionParameter], *, is_server: bool
+) -> Tuple[bool, bool, Optional[int], Optional[Union[int, bool]]]:
+    """
+    Extract compression parameters from a list of ``(name, value)`` pairs.
+
+    If ``is_server`` is :obj:`True`, ``client_max_window_bits`` may be
+    provided without a value. This is only allowed in handshake requests.
+
+    """
+    server_no_context_takeover: bool = False
+    client_no_context_takeover: bool = False
+    server_max_window_bits: Optional[int] = None
+    client_max_window_bits: Optional[Union[int, bool]] = None
+
+    for name, value in params:
+        if name == "server_no_context_takeover":
+            if server_no_context_takeover:
+                raise exceptions.DuplicateParameter(name)
+            if value is None:
+                server_no_context_takeover = True
+            else:
+                raise exceptions.InvalidParameterValue(name, value)
+
+        elif name == "client_no_context_takeover":
+            if client_no_context_takeover:
+                raise exceptions.DuplicateParameter(name)
+            if value is None:
+                client_no_context_takeover = True
+            else:
+                raise exceptions.InvalidParameterValue(name, value)
+
+        elif name == "server_max_window_bits":
+            if server_max_window_bits is not None:
+                raise exceptions.DuplicateParameter(name)
+            if value in _MAX_WINDOW_BITS_VALUES:
+                server_max_window_bits = int(value)
+            else:
+                raise exceptions.InvalidParameterValue(name, value)
+
+        elif name == "client_max_window_bits":
+            if client_max_window_bits is not None:
+                raise exceptions.DuplicateParameter(name)
+            if is_server and value is None:  # only in handshake requests
+                client_max_window_bits = True
+            elif value in _MAX_WINDOW_BITS_VALUES:
+                client_max_window_bits = int(value)
+            else:
+                raise exceptions.InvalidParameterValue(name, value)
+
+        else:
+            raise exceptions.InvalidParameterName(name)
+
+    return (
+        server_no_context_takeover,
+        client_no_context_takeover,
+        server_max_window_bits,
+        client_max_window_bits,
+    )
+
+
+class ClientPerMessageDeflateFactory(ClientExtensionFactory):
+    """
+    Client-side extension factory for the Per-Message Deflate extension.
+
+    Parameters behave as described in `section 7.1 of RFC 7692`_.
+
+    .. _section 7.1 of RFC 7692: https://www.rfc-editor.org/rfc/rfc7692.html#section-7.1
+
+    Set them to :obj:`True` to include them in the negotiation offer without a
+    value or to an integer value to include them with this value.
+
+    Args:
+        server_no_context_takeover: prevent server from using context takeover.
+        client_no_context_takeover: prevent client from using context takeover.
+        server_max_window_bits: maximum size of the server's LZ77 sliding window
+            in bits, between 8 and 15.
+        client_max_window_bits: maximum size of the client's LZ77 sliding window
+            in bits, between 8 and 15, or :obj:`True` to indicate support without
+            setting a limit.
+        compress_settings: additional keyword arguments for :func:`zlib.compressobj`,
+            excluding ``wbits``.
+
+    """
+
+    name = ExtensionName("permessage-deflate")
+
+    def __init__(
+        self,
+        server_no_context_takeover: bool = False,
+        client_no_context_takeover: bool = False,
+        server_max_window_bits: Optional[int] = None,
+        client_max_window_bits: Optional[Union[int, bool]] = True,
+        compress_settings: Optional[Dict[str, Any]] = None,
+    ) -> None:
+        """
+        Configure the Per-Message Deflate extension factory.
+
+        """
+        if not (server_max_window_bits is None or 8 <= server_max_window_bits <= 15):
+            raise ValueError("server_max_window_bits must be between 8 and 15")
+        if not (
+            client_max_window_bits is None
+            or client_max_window_bits is True
+            or 8 <= client_max_window_bits <= 15
+        ):
+            raise ValueError("client_max_window_bits must be between 8 and 15")
+        if compress_settings is not None and "wbits" in compress_settings:
+            raise ValueError(
+                "compress_settings must not include wbits, "
+                "set client_max_window_bits instead"
+            )
+
+        self.server_no_context_takeover = server_no_context_takeover
+        self.client_no_context_takeover = client_no_context_takeover
+        self.server_max_window_bits = server_max_window_bits
+        self.client_max_window_bits = client_max_window_bits
+        self.compress_settings = compress_settings
+
+    def get_request_params(self) -> List[ExtensionParameter]:
+        """
+        Build request parameters.
+
+        """
+        return _build_parameters(
+            self.server_no_context_takeover,
+            self.client_no_context_takeover,
+            self.server_max_window_bits,
+            self.client_max_window_bits,
+        )
+
+    def process_response_params(
+        self,
+        params: Sequence[ExtensionParameter],
+        accepted_extensions: Sequence[Extension],
+    ) -> PerMessageDeflate:
+        """
+        Process response parameters.
+
+        Return an extension instance.
+
+        """
+        if any(other.name == self.name for other in accepted_extensions):
+            raise exceptions.NegotiationError(f"received duplicate {self.name}")
+
+        # Request parameters are available in instance variables.
+
+        # Load response parameters in local variables.
+        (
+            server_no_context_takeover,
+            client_no_context_takeover,
+            server_max_window_bits,
+            client_max_window_bits,
+        ) = _extract_parameters(params, is_server=False)
+
+        # After comparing the request and the response, the final
+        # configuration must be available in the local variables.
+
+        # server_no_context_takeover
+        #
+        #   Req.    Resp.   Result
+        #   ------  ------  --------------------------------------------------
+        #   False   False   False
+        #   False   True    True
+        #   True    False   Error!
+        #   True    True    True
+
+        if self.server_no_context_takeover:
+            if not server_no_context_takeover:
+                raise exceptions.NegotiationError("expected server_no_context_takeover")
+
+        # client_no_context_takeover
+        #
+        #   Req.    Resp.   Result
+        #   ------  ------  --------------------------------------------------
+        #   False   False   False
+        #   False   True    True
+        #   True    False   True - must change value
+        #   True    True    True
+
+        if self.client_no_context_takeover:
+            if not client_no_context_takeover:
+                client_no_context_takeover = True
+
+        # server_max_window_bits
+
+        #   Req.    Resp.   Result
+        #   ------  ------  --------------------------------------------------
+        #   None    None    None
+        #   None    8≤M≤15  M
+        #   8≤N≤15  None    Error!
+        #   8≤N≤15  8≤M≤N   M
+        #   8≤N≤15  N<M≤15  Error!
+
+        if self.server_max_window_bits is None:
+            pass
+
+        else:
+            if server_max_window_bits is None:
+                raise exceptions.NegotiationError("expected server_max_window_bits")
+            elif server_max_window_bits > self.server_max_window_bits:
+                raise exceptions.NegotiationError("unsupported server_max_window_bits")
+
+        # client_max_window_bits
+
+        #   Req.    Resp.   Result
+        #   ------  ------  --------------------------------------------------
+        #   None    None    None
+        #   None    8≤M≤15  Error!
+        #   True    None    None
+        #   True    8≤M≤15  M
+        #   8≤N≤15  None    N - must change value
+        #   8≤N≤15  8≤M≤N   M
+        #   8≤N≤15  N<M≤15  Error!
+
+        if self.client_max_window_bits is None:
+            if client_max_window_bits is not None:
+                raise exceptions.NegotiationError("unexpected client_max_window_bits")
+
+        elif self.client_max_window_bits is True:
+            pass
+
+        else:
+            if client_max_window_bits is None:
+                client_max_window_bits = self.client_max_window_bits
+            elif client_max_window_bits > self.client_max_window_bits:
+                raise exceptions.NegotiationError("unsupported client_max_window_bits")
+
+        return PerMessageDeflate(
+            server_no_context_takeover,  # remote_no_context_takeover
+            client_no_context_takeover,  # local_no_context_takeover
+            server_max_window_bits or 15,  # remote_max_window_bits
+            client_max_window_bits or 15,  # local_max_window_bits
+            self.compress_settings,
+        )
+
+
+def enable_client_permessage_deflate(
+    extensions: Optional[Sequence[ClientExtensionFactory]],
+) -> Sequence[ClientExtensionFactory]:
+    """
+    Enable Per-Message Deflate with default settings in client extensions.
+
+    If the extension is already present, perhaps with non-default settings,
+    the configuration isn't changed.
+
+    """
+    if extensions is None:
+        extensions = []
+    if not any(
+        extension_factory.name == ClientPerMessageDeflateFactory.name
+        for extension_factory in extensions
+    ):
+        extensions = list(extensions) + [
+            ClientPerMessageDeflateFactory(
+                compress_settings={"memLevel": 5},
+            )
+        ]
+    return extensions
+
+
+class ServerPerMessageDeflateFactory(ServerExtensionFactory):
+    """
+    Server-side extension factory for the Per-Message Deflate extension.
+
+    Parameters behave as described in `section 7.1 of RFC 7692`_.
+
+    .. _section 7.1 of RFC 7692: https://www.rfc-editor.org/rfc/rfc7692.html#section-7.1
+
+    Set them to :obj:`True` to include them in the negotiation offer without a
+    value or to an integer value to include them with this value.
+
+    Args:
+        server_no_context_takeover: prevent server from using context takeover.
+        client_no_context_takeover: prevent client from using context takeover.
+        server_max_window_bits: maximum size of the server's LZ77 sliding window
+            in bits, between 8 and 15.
+        client_max_window_bits: maximum size of the client's LZ77 sliding window
+            in bits, between 8 and 15.
+        compress_settings: additional keyword arguments for :func:`zlib.compressobj`,
+            excluding ``wbits``.
+        require_client_max_window_bits: do not enable compression at all if
+            client doesn't advertise support for ``client_max_window_bits``;
+            the default behavior is to enable compression without enforcing
+            ``client_max_window_bits``.
+
+    """
+
+    name = ExtensionName("permessage-deflate")
+
+    def __init__(
+        self,
+        server_no_context_takeover: bool = False,
+        client_no_context_takeover: bool = False,
+        server_max_window_bits: Optional[int] = None,
+        client_max_window_bits: Optional[int] = None,
+        compress_settings: Optional[Dict[str, Any]] = None,
+        require_client_max_window_bits: bool = False,
+    ) -> None:
+        """
+        Configure the Per-Message Deflate extension factory.
+
+        """
+        if not (server_max_window_bits is None or 8 <= server_max_window_bits <= 15):
+            raise ValueError("server_max_window_bits must be between 8 and 15")
+        if not (client_max_window_bits is None or 8 <= client_max_window_bits <= 15):
+            raise ValueError("client_max_window_bits must be between 8 and 15")
+        if compress_settings is not None and "wbits" in compress_settings:
+            raise ValueError(
+                "compress_settings must not include wbits, "
+                "set server_max_window_bits instead"
+            )
+        if client_max_window_bits is None and require_client_max_window_bits:
+            raise ValueError(
+                "require_client_max_window_bits is enabled, "
+                "but client_max_window_bits isn't configured"
+            )
+
+        self.server_no_context_takeover = server_no_context_takeover
+        self.client_no_context_takeover = client_no_context_takeover
+        self.server_max_window_bits = server_max_window_bits
+        self.client_max_window_bits = client_max_window_bits
+        self.compress_settings = compress_settings
+        self.require_client_max_window_bits = require_client_max_window_bits
+
+    def process_request_params(
+        self,
+        params: Sequence[ExtensionParameter],
+        accepted_extensions: Sequence[Extension],
+    ) -> Tuple[List[ExtensionParameter], PerMessageDeflate]:
+        """
+        Process request parameters.
+
+        Return response params and an extension instance.
+
+        """
+        if any(other.name == self.name for other in accepted_extensions):
+            raise exceptions.NegotiationError(f"skipped duplicate {self.name}")
+
+        # Load request parameters in local variables.
+        (
+            server_no_context_takeover,
+            client_no_context_takeover,
+            server_max_window_bits,
+            client_max_window_bits,
+        ) = _extract_parameters(params, is_server=True)
+
+        # Configuration parameters are available in instance variables.
+
+        # After comparing the request and the configuration, the response must
+        # be available in the local variables.
+
+        # server_no_context_takeover
+        #
+        #   Config  Req.    Resp.
+        #   ------  ------  --------------------------------------------------
+        #   False   False   False
+        #   False   True    True
+        #   True    False   True - must change value to True
+        #   True    True    True
+
+        if self.server_no_context_takeover:
+            if not server_no_context_takeover:
+                server_no_context_takeover = True
+
+        # client_no_context_takeover
+        #
+        #   Config  Req.    Resp.
+        #   ------  ------  --------------------------------------------------
+        #   False   False   False
+        #   False   True    True (or False)
+        #   True    False   True - must change value to True
+        #   True    True    True (or False)
+
+        if self.client_no_context_takeover:
+            if not client_no_context_takeover:
+                client_no_context_takeover = True
+
+        # server_max_window_bits
+
+        #   Config  Req.    Resp.
+        #   ------  ------  --------------------------------------------------
+        #   None    None    None
+        #   None    8≤M≤15  M
+        #   8≤N≤15  None    N - must change value
+        #   8≤N≤15  8≤M≤N   M
+        #   8≤N≤15  N<M≤15  N - must change value
+
+        if self.server_max_window_bits is None:
+            pass
+
+        else:
+            if server_max_window_bits is None:
+                server_max_window_bits = self.server_max_window_bits
+            elif server_max_window_bits > self.server_max_window_bits:
+                server_max_window_bits = self.server_max_window_bits
+
+        # client_max_window_bits
+
+        #   Config  Req.    Resp.
+        #   ------  ------  --------------------------------------------------
+        #   None    None    None
+        #   None    True    None - must change value
+        #   None    8≤M≤15  M (or None)
+        #   8≤N≤15  None    None or Error!
+        #   8≤N≤15  True    N - must change value
+        #   8≤N≤15  8≤M≤N   M (or None)
+        #   8≤N≤15  N<M≤15  N
+
+        if self.client_max_window_bits is None:
+            if client_max_window_bits is True:
+                client_max_window_bits = self.client_max_window_bits
+
+        else:
+            if client_max_window_bits is None:
+                if self.require_client_max_window_bits:
+                    raise exceptions.NegotiationError("required client_max_window_bits")
+            elif client_max_window_bits is True:
+                client_max_window_bits = self.client_max_window_bits
+            elif self.client_max_window_bits < client_max_window_bits:
+                client_max_window_bits = self.client_max_window_bits
+
+        return (
+            _build_parameters(
+                server_no_context_takeover,
+                client_no_context_takeover,
+                server_max_window_bits,
+                client_max_window_bits,
+            ),
+            PerMessageDeflate(
+                client_no_context_takeover,  # remote_no_context_takeover
+                server_no_context_takeover,  # local_no_context_takeover
+                client_max_window_bits or 15,  # remote_max_window_bits
+                server_max_window_bits or 15,  # local_max_window_bits
+                self.compress_settings,
+            ),
+        )
+
+
+def enable_server_permessage_deflate(
+    extensions: Optional[Sequence[ServerExtensionFactory]],
+) -> Sequence[ServerExtensionFactory]:
+    """
+    Enable Per-Message Deflate with default settings in server extensions.
+
+    If the extension is already present, perhaps with non-default settings,
+    the configuration isn't changed.
+
+    """
+    if extensions is None:
+        extensions = []
+    if not any(
+        ext_factory.name == ServerPerMessageDeflateFactory.name
+        for ext_factory in extensions
+    ):
+        extensions = list(extensions) + [
+            ServerPerMessageDeflateFactory(
+                server_max_window_bits=12,
+                client_max_window_bits=12,
+                compress_settings={"memLevel": 5},
+            )
+        ]
+    return extensions

videollama2/lib/python3.10/site-packages/websockets/frames.py

@@ -0,0 +1,449 @@
+from __future__ import annotations
+
+import dataclasses
+import enum
+import io
+import secrets
+import struct
+from typing import Callable, Generator, Optional, Sequence, Tuple
+
+from . import exceptions, extensions
+from .typing import Data
+
+
+try:
+    from .speedups import apply_mask
+except ImportError:
+    from .utils import apply_mask
+
+
+__all__ = [
+    "Opcode",
+    "OP_CONT",
+    "OP_TEXT",
+    "OP_BINARY",
+    "OP_CLOSE",
+    "OP_PING",
+    "OP_PONG",
+    "DATA_OPCODES",
+    "CTRL_OPCODES",
+    "Frame",
+    "prepare_data",
+    "prepare_ctrl",
+    "Close",
+]
+
+
+class Opcode(enum.IntEnum):
+    """Opcode values for WebSocket frames."""
+
+    CONT, TEXT, BINARY = 0x00, 0x01, 0x02
+    CLOSE, PING, PONG = 0x08, 0x09, 0x0A
+
+
+OP_CONT = Opcode.CONT
+OP_TEXT = Opcode.TEXT
+OP_BINARY = Opcode.BINARY
+OP_CLOSE = Opcode.CLOSE
+OP_PING = Opcode.PING
+OP_PONG = Opcode.PONG
+
+DATA_OPCODES = OP_CONT, OP_TEXT, OP_BINARY
+CTRL_OPCODES = OP_CLOSE, OP_PING, OP_PONG
+
+
+# See https://www.iana.org/assignments/websocket/websocket.xhtml
+CLOSE_CODES = {
+    1000: "OK",
+    1001: "going away",
+    1002: "protocol error",
+    1003: "unsupported type",
+    # 1004 is reserved
+    1005: "no status code [internal]",
+    1006: "connection closed abnormally [internal]",
+    1007: "invalid data",
+    1008: "policy violation",
+    1009: "message too big",
+    1010: "extension required",
+    1011: "unexpected error",
+    1012: "service restart",
+    1013: "try again later",
+    1014: "bad gateway",
+    1015: "TLS failure [internal]",
+}
+
+
+# Close code that are allowed in a close frame.
+# Using a set optimizes `code in EXTERNAL_CLOSE_CODES`.
+EXTERNAL_CLOSE_CODES = {
+    1000,
+    1001,
+    1002,
+    1003,
+    1007,
+    1008,
+    1009,
+    1010,
+    1011,
+    1012,
+    1013,
+    1014,
+}
+
+OK_CLOSE_CODES = {
+    1000,
+    1001,
+    1005,
+}
+
+
+BytesLike = bytes, bytearray, memoryview
+
+
+@dataclasses.dataclass
+class Frame:
+    """
+    WebSocket frame.
+
+    Attributes:
+        opcode: Opcode.
+        data: Payload data.
+        fin: FIN bit.
+        rsv1: RSV1 bit.
+        rsv2: RSV2 bit.
+        rsv3: RSV3 bit.
+
+    Only these fields are needed. The MASK bit, payload length and masking-key
+    are handled on the fly when parsing and serializing frames.
+
+    """
+
+    opcode: Opcode
+    data: bytes
+    fin: bool = True
+    rsv1: bool = False
+    rsv2: bool = False
+    rsv3: bool = False
+
+    def __str__(self) -> str:
+        """
+        Return a human-readable representation of a frame.
+
+        """
+        coding = None
+        length = f"{len(self.data)} byte{'' if len(self.data) == 1 else 's'}"
+        non_final = "" if self.fin else "continued"
+
+        if self.opcode is OP_TEXT:
+            # Decoding only the beginning and the end is needlessly hard.
+            # Decode the entire payload then elide later if necessary.
+            data = repr(self.data.decode())
+        elif self.opcode is OP_BINARY:
+            # We'll show at most the first 16 bytes and the last 8 bytes.
+            # Encode just what we need, plus two dummy bytes to elide later.
+            binary = self.data
+            if len(binary) > 25:
+                binary = b"".join([binary[:16], b"\x00\x00", binary[-8:]])
+            data = " ".join(f"{byte:02x}" for byte in binary)
+        elif self.opcode is OP_CLOSE:
+            data = str(Close.parse(self.data))
+        elif self.data:
+            # We don't know if a Continuation frame contains text or binary.
+            # Ping and Pong frames could contain UTF-8.
+            # Attempt to decode as UTF-8 and display it as text; fallback to
+            # binary. If self.data is a memoryview, it has no decode() method,
+            # which raises AttributeError.
+            try:
+                data = repr(self.data.decode())
+                coding = "text"
+            except (UnicodeDecodeError, AttributeError):
+                binary = self.data
+                if len(binary) > 25:
+                    binary = b"".join([binary[:16], b"\x00\x00", binary[-8:]])
+                data = " ".join(f"{byte:02x}" for byte in binary)
+                coding = "binary"
+        else:
+            data = "''"
+
+        if len(data) > 75:
+            data = data[:48] + "..." + data[-24:]
+
+        metadata = ", ".join(filter(None, [coding, length, non_final]))
+
+        return f"{self.opcode.name} {data} [{metadata}]"
+
+    @classmethod
+    def parse(
+        cls,
+        read_exact: Callable[[int], Generator[None, None, bytes]],
+        *,
+        mask: bool,
+        max_size: Optional[int] = None,
+        extensions: Optional[Sequence[extensions.Extension]] = None,
+    ) -> Generator[None, None, Frame]:
+        """
+        Parse a WebSocket frame.
+
+        This is a generator-based coroutine.
+
+        Args:
+            read_exact: generator-based coroutine that reads the requested
+                bytes or raises an exception if there isn't enough data.
+            mask: whether the frame should be masked i.e. whether the read
+                happens on the server side.
+            max_size: maximum payload size in bytes.
+            extensions: list of extensions, applied in reverse order.
+
+        Raises:
+            EOFError: if the connection is closed without a full WebSocket frame.
+            UnicodeDecodeError: if the frame contains invalid UTF-8.
+            PayloadTooBig: if the frame's payload size exceeds ``max_size``.
+            ProtocolError: if the frame contains incorrect values.
+
+        """
+        # Read the header.
+        data = yield from read_exact(2)
+        head1, head2 = struct.unpack("!BB", data)
+
+        # While not Pythonic, this is marginally faster than calling bool().
+        fin = True if head1 & 0b10000000 else False
+        rsv1 = True if head1 & 0b01000000 else False
+        rsv2 = True if head1 & 0b00100000 else False
+        rsv3 = True if head1 & 0b00010000 else False
+
+        try:
+            opcode = Opcode(head1 & 0b00001111)
+        except ValueError as exc:
+            raise exceptions.ProtocolError("invalid opcode") from exc
+
+        if (True if head2 & 0b10000000 else False) != mask:
+            raise exceptions.ProtocolError("incorrect masking")
+
+        length = head2 & 0b01111111
+        if length == 126:
+            data = yield from read_exact(2)
+            (length,) = struct.unpack("!H", data)
+        elif length == 127:
+            data = yield from read_exact(8)
+            (length,) = struct.unpack("!Q", data)
+        if max_size is not None and length > max_size:
+            raise exceptions.PayloadTooBig(
+                f"over size limit ({length} > {max_size} bytes)"
+            )
+        if mask:
+            mask_bytes = yield from read_exact(4)
+
+        # Read the data.
+        data = yield from read_exact(length)
+        if mask:
+            data = apply_mask(data, mask_bytes)
+
+        frame = cls(opcode, data, fin, rsv1, rsv2, rsv3)
+
+        if extensions is None:
+            extensions = []
+        for extension in reversed(extensions):
+            frame = extension.decode(frame, max_size=max_size)
+
+        frame.check()
+
+        return frame
+
+    def serialize(
+        self,
+        *,
+        mask: bool,
+        extensions: Optional[Sequence[extensions.Extension]] = None,
+    ) -> bytes:
+        """
+        Serialize a WebSocket frame.
+
+        Args:
+            mask: whether the frame should be masked i.e. whether the write
+                happens on the client side.
+            extensions: list of extensions, applied in order.
+
+        Raises:
+            ProtocolError: if the frame contains incorrect values.
+
+        """
+        self.check()
+
+        if extensions is None:
+            extensions = []
+        for extension in extensions:
+            self = extension.encode(self)
+
+        output = io.BytesIO()
+
+        # Prepare the header.
+        head1 = (
+            (0b10000000 if self.fin else 0)
+            | (0b01000000 if self.rsv1 else 0)
+            | (0b00100000 if self.rsv2 else 0)
+            | (0b00010000 if self.rsv3 else 0)
+            | self.opcode
+        )
+
+        head2 = 0b10000000 if mask else 0
+
+        length = len(self.data)
+        if length < 126:
+            output.write(struct.pack("!BB", head1, head2 | length))
+        elif length < 65536:
+            output.write(struct.pack("!BBH", head1, head2 | 126, length))
+        else:
+            output.write(struct.pack("!BBQ", head1, head2 | 127, length))
+
+        if mask:
+            mask_bytes = secrets.token_bytes(4)
+            output.write(mask_bytes)
+
+        # Prepare the data.
+        if mask:
+            data = apply_mask(self.data, mask_bytes)
+        else:
+            data = self.data
+        output.write(data)
+
+        return output.getvalue()
+
+    def check(self) -> None:
+        """
+        Check that reserved bits and opcode have acceptable values.
+
+        Raises:
+            ProtocolError: if a reserved bit or the opcode is invalid.
+
+        """
+        if self.rsv1 or self.rsv2 or self.rsv3:
+            raise exceptions.ProtocolError("reserved bits must be 0")
+
+        if self.opcode in CTRL_OPCODES:
+            if len(self.data) > 125:
+                raise exceptions.ProtocolError("control frame too long")
+            if not self.fin:
+                raise exceptions.ProtocolError("fragmented control frame")
+
+
+def prepare_data(data: Data) -> Tuple[int, bytes]:
+    """
+    Convert a string or byte-like object to an opcode and a bytes-like object.
+
+    This function is designed for data frames.
+
+    If ``data`` is a :class:`str`, return ``OP_TEXT`` and a :class:`bytes`
+    object encoding ``data`` in UTF-8.
+
+    If ``data`` is a bytes-like object, return ``OP_BINARY`` and a bytes-like
+    object.
+
+    Raises:
+        TypeError: if ``data`` doesn't have a supported type.
+
+    """
+    if isinstance(data, str):
+        return OP_TEXT, data.encode("utf-8")
+    elif isinstance(data, BytesLike):
+        return OP_BINARY, data
+    else:
+        raise TypeError("data must be str or bytes-like")
+
+
+def prepare_ctrl(data: Data) -> bytes:
+    """
+    Convert a string or byte-like object to bytes.
+
+    This function is designed for ping and pong frames.
+
+    If ``data`` is a :class:`str`, return a :class:`bytes` object encoding
+    ``data`` in UTF-8.
+
+    If ``data`` is a bytes-like object, return a :class:`bytes` object.
+
+    Raises:
+        TypeError: if ``data`` doesn't have a supported type.
+
+    """
+    if isinstance(data, str):
+        return data.encode("utf-8")
+    elif isinstance(data, BytesLike):
+        return bytes(data)
+    else:
+        raise TypeError("data must be str or bytes-like")
+
+
+@dataclasses.dataclass
+class Close:
+    """
+    Code and reason for WebSocket close frames.
+
+    Attributes:
+        code: Close code.
+        reason: Close reason.
+
+    """
+
+    code: int
+    reason: str
+
+    def __str__(self) -> str:
+        """
+        Return a human-readable representation of a close code and reason.
+
+        """
+        if 3000 <= self.code < 4000:
+            explanation = "registered"
+        elif 4000 <= self.code < 5000:
+            explanation = "private use"
+        else:
+            explanation = CLOSE_CODES.get(self.code, "unknown")
+        result = f"{self.code} ({explanation})"
+
+        if self.reason:
+            result = f"{result} {self.reason}"
+
+        return result
+
+    @classmethod
+    def parse(cls, data: bytes) -> Close:
+        """
+        Parse the payload of a close frame.
+
+        Args:
+            data: payload of the close frame.
+
+        Raises:
+            ProtocolError: if data is ill-formed.
+            UnicodeDecodeError: if the reason isn't valid UTF-8.
+
+        """
+        if len(data) >= 2:
+            (code,) = struct.unpack("!H", data[:2])
+            reason = data[2:].decode("utf-8")
+            close = cls(code, reason)
+            close.check()
+            return close
+        elif len(data) == 0:
+            return cls(1005, "")
+        else:
+            raise exceptions.ProtocolError("close frame too short")
+
+    def serialize(self) -> bytes:
+        """
+        Serialize the payload of a close frame.
+
+        """
+        self.check()
+        return struct.pack("!H", self.code) + self.reason.encode("utf-8")
+
+    def check(self) -> None:
+        """
+        Check that the close code has a valid value for a close frame.
+
+        Raises:
+            ProtocolError: if the close code is invalid.
+
+        """
+        if not (self.code in EXTERNAL_CLOSE_CODES or 3000 <= self.code < 5000):
+            raise exceptions.ProtocolError("invalid status code")

videollama2/lib/python3.10/site-packages/websockets/http.py

@@ -0,0 +1,30 @@
+from __future__ import annotations
+
+import sys
+
+from .imports import lazy_import
+from .version import version as websockets_version
+
+
+# For backwards compatibility:
+
+
+lazy_import(
+    globals(),
+    # Headers and MultipleValuesError used to be defined in this module.
+    aliases={
+        "Headers": ".datastructures",
+        "MultipleValuesError": ".datastructures",
+    },
+    deprecated_aliases={
+        "read_request": ".legacy.http",
+        "read_response": ".legacy.http",
+    },
+)
+
+
+__all__ = ["USER_AGENT"]
+
+
+PYTHON_VERSION = "{}.{}".format(*sys.version_info)
+USER_AGENT = f"Python/{PYTHON_VERSION} websockets/{websockets_version}"

videollama2/lib/python3.10/site-packages/websockets/http11.py

@@ -0,0 +1,364 @@
+from __future__ import annotations
+
+import dataclasses
+import re
+import warnings
+from typing import Callable, Generator, Optional
+
+from . import datastructures, exceptions
+
+
+# Maximum total size of headers is around 128 * 8 KiB = 1 MiB.
+MAX_HEADERS = 128
+
+# Limit request line and header lines. 8KiB is the most common default
+# configuration of popular HTTP servers.
+MAX_LINE = 8192
+
+# Support for HTTP response bodies is intended to read an error message
+# returned by a server. It isn't designed to perform large file transfers.
+MAX_BODY = 2**20  # 1 MiB
+
+
+def d(value: bytes) -> str:
+    """
+    Decode a bytestring for interpolating into an error message.
+
+    """
+    return value.decode(errors="backslashreplace")
+
+
+# See https://www.rfc-editor.org/rfc/rfc7230.html#appendix-B.
+
+# Regex for validating header names.
+
+_token_re = re.compile(rb"[-!#$%&\'*+.^_`|~0-9a-zA-Z]+")
+
+# Regex for validating header values.
+
+# We don't attempt to support obsolete line folding.
+
+# Include HTAB (\x09), SP (\x20), VCHAR (\x21-\x7e), obs-text (\x80-\xff).
+
+# The ABNF is complicated because it attempts to express that optional
+# whitespace is ignored. We strip whitespace and don't revalidate that.
+
+# See also https://www.rfc-editor.org/errata_search.php?rfc=7230&eid=4189
+
+_value_re = re.compile(rb"[\x09\x20-\x7e\x80-\xff]*")
+
+
+@dataclasses.dataclass
+class Request:
+    """
+    WebSocket handshake request.
+
+    Attributes:
+        path: Request path, including optional query.
+        headers: Request headers.
+    """
+
+    path: str
+    headers: datastructures.Headers
+    # body isn't useful is the context of this library.
+
+    _exception: Optional[Exception] = None
+
+    @property
+    def exception(self) -> Optional[Exception]:  # pragma: no cover
+        warnings.warn(
+            "Request.exception is deprecated; "
+            "use ServerProtocol.handshake_exc instead",
+            DeprecationWarning,
+        )
+        return self._exception
+
+    @classmethod
+    def parse(
+        cls,
+        read_line: Callable[[int], Generator[None, None, bytes]],
+    ) -> Generator[None, None, Request]:
+        """
+        Parse a WebSocket handshake request.
+
+        This is a generator-based coroutine.
+
+        The request path isn't URL-decoded or validated in any way.
+
+        The request path and headers are expected to contain only ASCII
+        characters. Other characters are represented with surrogate escapes.
+
+        :meth:`parse` doesn't attempt to read the request body because
+        WebSocket handshake requests don't have one. If the request contains a
+        body, it may be read from the data stream after :meth:`parse` returns.
+
+        Args:
+            read_line: generator-based coroutine that reads a LF-terminated
+                line or raises an exception if there isn't enough data
+
+        Raises:
+            EOFError: if the connection is closed without a full HTTP request.
+            SecurityError: if the request exceeds a security limit.
+            ValueError: if the request isn't well formatted.
+
+        """
+        # https://www.rfc-editor.org/rfc/rfc7230.html#section-3.1.1
+
+        # Parsing is simple because fixed values are expected for method and
+        # version and because path isn't checked. Since WebSocket software tends
+        # to implement HTTP/1.1 strictly, there's little need for lenient parsing.
+
+        try:
+            request_line = yield from parse_line(read_line)
+        except EOFError as exc:
+            raise EOFError("connection closed while reading HTTP request line") from exc
+
+        try:
+            method, raw_path, version = request_line.split(b" ", 2)
+        except ValueError:  # not enough values to unpack (expected 3, got 1-2)
+            raise ValueError(f"invalid HTTP request line: {d(request_line)}") from None
+
+        if method != b"GET":
+            raise ValueError(f"unsupported HTTP method: {d(method)}")
+        if version != b"HTTP/1.1":
+            raise ValueError(f"unsupported HTTP version: {d(version)}")
+        path = raw_path.decode("ascii", "surrogateescape")
+
+        headers = yield from parse_headers(read_line)
+
+        # https://www.rfc-editor.org/rfc/rfc7230.html#section-3.3.3
+
+        if "Transfer-Encoding" in headers:
+            raise NotImplementedError("transfer codings aren't supported")
+
+        if "Content-Length" in headers:
+            raise ValueError("unsupported request body")
+
+        return cls(path, headers)
+
+    def serialize(self) -> bytes:
+        """
+        Serialize a WebSocket handshake request.
+
+        """
+        # Since the request line and headers only contain ASCII characters,
+        # we can keep this simple.
+        request = f"GET {self.path} HTTP/1.1\r\n".encode()
+        request += self.headers.serialize()
+        return request
+
+
+@dataclasses.dataclass
+class Response:
+    """
+    WebSocket handshake response.
+
+    Attributes:
+        status_code: Response code.
+        reason_phrase: Response reason.
+        headers: Response headers.
+        body: Response body, if any.
+
+    """
+
+    status_code: int
+    reason_phrase: str
+    headers: datastructures.Headers
+    body: Optional[bytes] = None
+
+    _exception: Optional[Exception] = None
+
+    @property
+    def exception(self) -> Optional[Exception]:  # pragma: no cover
+        warnings.warn(
+            "Response.exception is deprecated; "
+            "use ClientProtocol.handshake_exc instead",
+            DeprecationWarning,
+        )
+        return self._exception
+
+    @classmethod
+    def parse(
+        cls,
+        read_line: Callable[[int], Generator[None, None, bytes]],
+        read_exact: Callable[[int], Generator[None, None, bytes]],
+        read_to_eof: Callable[[int], Generator[None, None, bytes]],
+    ) -> Generator[None, None, Response]:
+        """
+        Parse a WebSocket handshake response.
+
+        This is a generator-based coroutine.
+
+        The reason phrase and headers are expected to contain only ASCII
+        characters. Other characters are represented with surrogate escapes.
+
+        Args:
+            read_line: generator-based coroutine that reads a LF-terminated
+                line or raises an exception if there isn't enough data.
+            read_exact: generator-based coroutine that reads the requested
+                bytes or raises an exception if there isn't enough data.
+            read_to_eof: generator-based coroutine that reads until the end
+                of the stream.
+
+        Raises:
+            EOFError: if the connection is closed without a full HTTP response.
+            SecurityError: if the response exceeds a security limit.
+            LookupError: if the response isn't well formatted.
+            ValueError: if the response isn't well formatted.
+
+        """
+        # https://www.rfc-editor.org/rfc/rfc7230.html#section-3.1.2
+
+        try:
+            status_line = yield from parse_line(read_line)
+        except EOFError as exc:
+            raise EOFError("connection closed while reading HTTP status line") from exc
+
+        try:
+            version, raw_status_code, raw_reason = status_line.split(b" ", 2)
+        except ValueError:  # not enough values to unpack (expected 3, got 1-2)
+            raise ValueError(f"invalid HTTP status line: {d(status_line)}") from None
+
+        if version != b"HTTP/1.1":
+            raise ValueError(f"unsupported HTTP version: {d(version)}")
+        try:
+            status_code = int(raw_status_code)
+        except ValueError:  # invalid literal for int() with base 10
+            raise ValueError(
+                f"invalid HTTP status code: {d(raw_status_code)}"
+            ) from None
+        if not 100 <= status_code < 1000:
+            raise ValueError(f"unsupported HTTP status code: {d(raw_status_code)}")
+        if not _value_re.fullmatch(raw_reason):
+            raise ValueError(f"invalid HTTP reason phrase: {d(raw_reason)}")
+        reason = raw_reason.decode()
+
+        headers = yield from parse_headers(read_line)
+
+        # https://www.rfc-editor.org/rfc/rfc7230.html#section-3.3.3
+
+        if "Transfer-Encoding" in headers:
+            raise NotImplementedError("transfer codings aren't supported")
+
+        # Since websockets only does GET requests (no HEAD, no CONNECT), all
+        # responses except 1xx, 204, and 304 include a message body.
+        if 100 <= status_code < 200 or status_code == 204 or status_code == 304:
+            body = None
+        else:
+            content_length: Optional[int]
+            try:
+                # MultipleValuesError is sufficiently unlikely that we don't
+                # attempt to handle it. Instead we document that its parent
+                # class, LookupError, may be raised.
+                raw_content_length = headers["Content-Length"]
+            except KeyError:
+                content_length = None
+            else:
+                content_length = int(raw_content_length)
+
+            if content_length is None:
+                try:
+                    body = yield from read_to_eof(MAX_BODY)
+                except RuntimeError:
+                    raise exceptions.SecurityError(
+                        f"body too large: over {MAX_BODY} bytes"
+                    )
+            elif content_length > MAX_BODY:
+                raise exceptions.SecurityError(
+                    f"body too large: {content_length} bytes"
+                )
+            else:
+                body = yield from read_exact(content_length)
+
+        return cls(status_code, reason, headers, body)
+
+    def serialize(self) -> bytes:
+        """
+        Serialize a WebSocket handshake response.
+
+        """
+        # Since the status line and headers only contain ASCII characters,
+        # we can keep this simple.
+        response = f"HTTP/1.1 {self.status_code} {self.reason_phrase}\r\n".encode()
+        response += self.headers.serialize()
+        if self.body is not None:
+            response += self.body
+        return response
+
+
+def parse_headers(
+    read_line: Callable[[int], Generator[None, None, bytes]],
+) -> Generator[None, None, datastructures.Headers]:
+    """
+    Parse HTTP headers.
+
+    Non-ASCII characters are represented with surrogate escapes.
+
+    Args:
+        read_line: generator-based coroutine that reads a LF-terminated line
+            or raises an exception if there isn't enough data.
+
+    Raises:
+        EOFError: if the connection is closed without complete headers.
+        SecurityError: if the request exceeds a security limit.
+        ValueError: if the request isn't well formatted.
+
+    """
+    # https://www.rfc-editor.org/rfc/rfc7230.html#section-3.2
+
+    # We don't attempt to support obsolete line folding.
+
+    headers = datastructures.Headers()
+    for _ in range(MAX_HEADERS + 1):
+        try:
+            line = yield from parse_line(read_line)
+        except EOFError as exc:
+            raise EOFError("connection closed while reading HTTP headers") from exc
+        if line == b"":
+            break
+
+        try:
+            raw_name, raw_value = line.split(b":", 1)
+        except ValueError:  # not enough values to unpack (expected 2, got 1)
+            raise ValueError(f"invalid HTTP header line: {d(line)}") from None
+        if not _token_re.fullmatch(raw_name):
+            raise ValueError(f"invalid HTTP header name: {d(raw_name)}")
+        raw_value = raw_value.strip(b" \t")
+        if not _value_re.fullmatch(raw_value):
+            raise ValueError(f"invalid HTTP header value: {d(raw_value)}")
+
+        name = raw_name.decode("ascii")  # guaranteed to be ASCII at this point
+        value = raw_value.decode("ascii", "surrogateescape")
+        headers[name] = value
+
+    else:
+        raise exceptions.SecurityError("too many HTTP headers")
+
+    return headers
+
+
+def parse_line(
+    read_line: Callable[[int], Generator[None, None, bytes]],
+) -> Generator[None, None, bytes]:
+    """
+    Parse a single line.
+
+    CRLF is stripped from the return value.
+
+    Args:
+        read_line: generator-based coroutine that reads a LF-terminated line
+            or raises an exception if there isn't enough data.
+
+    Raises:
+        EOFError: if the connection is closed without a CRLF.
+        SecurityError: if the response exceeds a security limit.
+
+    """
+    try:
+        line = yield from read_line(MAX_LINE)
+    except RuntimeError:
+        raise exceptions.SecurityError("line too long")
+    # Not mandatory but safe - https://www.rfc-editor.org/rfc/rfc7230.html#section-3.5
+    if not line.endswith(b"\r\n"):
+        raise EOFError("line without CRLF")
+    return line[:-2]

videollama2/lib/python3.10/site-packages/websockets/imports.py

@@ -0,0 +1,99 @@
+from __future__ import annotations
+
+import warnings
+from typing import Any, Dict, Iterable, Optional
+
+
+__all__ = ["lazy_import"]
+
+
+def import_name(name: str, source: str, namespace: Dict[str, Any]) -> Any:
+    """
+    Import ``name`` from ``source`` in ``namespace``.
+
+    There are two use cases:
+
+    - ``name`` is an object defined in ``source``;
+    - ``name`` is a submodule of ``source``.
+
+    Neither :func:`__import__` nor :func:`~importlib.import_module` does
+    exactly this. :func:`__import__` is closer to the intended behavior.
+
+    """
+    level = 0
+    while source[level] == ".":
+        level += 1
+        assert level < len(source), "importing from parent isn't supported"
+    module = __import__(source[level:], namespace, None, [name], level)
+    return getattr(module, name)
+
+
+def lazy_import(
+    namespace: Dict[str, Any],
+    aliases: Optional[Dict[str, str]] = None,
+    deprecated_aliases: Optional[Dict[str, str]] = None,
+) -> None:
+    """
+    Provide lazy, module-level imports.
+
+    Typical use::
+
+        __getattr__, __dir__ = lazy_import(
+            globals(),
+            aliases={
+                "<name>": "<source module>",
+                ...
+            },
+            deprecated_aliases={
+                ...,
+            }
+        )
+
+    This function defines ``__getattr__`` and ``__dir__`` per :pep:`562`.
+
+    """
+    if aliases is None:
+        aliases = {}
+    if deprecated_aliases is None:
+        deprecated_aliases = {}
+
+    namespace_set = set(namespace)
+    aliases_set = set(aliases)
+    deprecated_aliases_set = set(deprecated_aliases)
+
+    assert not namespace_set & aliases_set, "namespace conflict"
+    assert not namespace_set & deprecated_aliases_set, "namespace conflict"
+    assert not aliases_set & deprecated_aliases_set, "namespace conflict"
+
+    package = namespace["__name__"]
+
+    def __getattr__(name: str) -> Any:
+        assert aliases is not None  # mypy cannot figure this out
+        try:
+            source = aliases[name]
+        except KeyError:
+            pass
+        else:
+            return import_name(name, source, namespace)
+
+        assert deprecated_aliases is not None  # mypy cannot figure this out
+        try:
+            source = deprecated_aliases[name]
+        except KeyError:
+            pass
+        else:
+            warnings.warn(
+                f"{package}.{name} is deprecated",
+                DeprecationWarning,
+                stacklevel=2,
+            )
+            return import_name(name, source, namespace)
+
+        raise AttributeError(f"module {package!r} has no attribute {name!r}")
+
+    namespace["__getattr__"] = __getattr__
+
+    def __dir__() -> Iterable[str]:
+        return sorted(namespace_set | aliases_set | deprecated_aliases_set)
+
+    namespace["__dir__"] = __dir__

videollama2/lib/python3.10/site-packages/websockets/legacy/async_timeout.py

@@ -0,0 +1,265 @@
+# From https://github.com/aio-libs/async-timeout/blob/master/async_timeout/__init__.py
+# Licensed under the Apache License (Apache-2.0)
+
+import asyncio
+import enum
+import sys
+import warnings
+from types import TracebackType
+from typing import Optional, Type
+
+
+# From https://github.com/python/typing_extensions/blob/main/src/typing_extensions.py
+# Licensed under the Python Software Foundation License (PSF-2.0)
+
+if sys.version_info >= (3, 11):
+    from typing import final
+else:
+    # @final exists in 3.8+, but we backport it for all versions
+    # before 3.11 to keep support for the __final__ attribute.
+    # See https://bugs.python.org/issue46342
+    def final(f):
+        """This decorator can be used to indicate to type checkers that
+        the decorated method cannot be overridden, and decorated class
+        cannot be subclassed. For example:
+
+            class Base:
+                @final
+                def done(self) -> None:
+                    ...
+            class Sub(Base):
+                def done(self) -> None:  # Error reported by type checker
+                    ...
+            @final
+            class Leaf:
+                ...
+            class Other(Leaf):  # Error reported by type checker
+                ...
+
+        There is no runtime checking of these properties. The decorator
+        sets the ``__final__`` attribute to ``True`` on the decorated object
+        to allow runtime introspection.
+        """
+        try:
+            f.__final__ = True
+        except (AttributeError, TypeError):
+            # Skip the attribute silently if it is not writable.
+            # AttributeError happens if the object has __slots__ or a
+            # read-only property, TypeError if it's a builtin class.
+            pass
+        return f
+
+
+# End https://github.com/aio-libs/async-timeout/blob/master/async_timeout/__init__.py
+
+__version__ = "4.0.2"
+
+
+__all__ = ("timeout", "timeout_at", "Timeout")
+
+
+def timeout(delay: Optional[float]) -> "Timeout":
+    """timeout context manager.
+
+    Useful in cases when you want to apply timeout logic around block
+    of code or in cases when asyncio.wait_for is not suitable. For example:
+
+    >>> async with timeout(0.001):
+    ...     async with aiohttp.get('https://github.com') as r:
+    ...         await r.text()
+
+
+    delay - value in seconds or None to disable timeout logic
+    """
+    loop = asyncio.get_running_loop()
+    if delay is not None:
+        deadline = loop.time() + delay  # type: Optional[float]
+    else:
+        deadline = None
+    return Timeout(deadline, loop)
+
+
+def timeout_at(deadline: Optional[float]) -> "Timeout":
+    """Schedule the timeout at absolute time.
+
+    deadline argument points on the time in the same clock system
+    as loop.time().
+
+    Please note: it is not POSIX time but a time with
+    undefined starting base, e.g. the time of the system power on.
+
+    >>> async with timeout_at(loop.time() + 10):
+    ...     async with aiohttp.get('https://github.com') as r:
+    ...         await r.text()
+
+
+    """
+    loop = asyncio.get_running_loop()
+    return Timeout(deadline, loop)
+
+
+class _State(enum.Enum):
+    INIT = "INIT"
+    ENTER = "ENTER"
+    TIMEOUT = "TIMEOUT"
+    EXIT = "EXIT"
+
+
+@final
+class Timeout:
+    # Internal class, please don't instantiate it directly
+    # Use timeout() and timeout_at() public factories instead.
+    #
+    # Implementation note: `async with timeout()` is preferred
+    # over `with timeout()`.
+    # While technically the Timeout class implementation
+    # doesn't need to be async at all,
+    # the `async with` statement explicitly points that
+    # the context manager should be used from async function context.
+    #
+    # This design allows to avoid many silly misusages.
+    #
+    # TimeoutError is raised immediately when scheduled
+    # if the deadline is passed.
+    # The purpose is to time out as soon as possible
+    # without waiting for the next await expression.
+
+    __slots__ = ("_deadline", "_loop", "_state", "_timeout_handler")
+
+    def __init__(
+        self, deadline: Optional[float], loop: asyncio.AbstractEventLoop
+    ) -> None:
+        self._loop = loop
+        self._state = _State.INIT
+
+        self._timeout_handler = None  # type: Optional[asyncio.Handle]
+        if deadline is None:
+            self._deadline = None  # type: Optional[float]
+        else:
+            self.update(deadline)
+
+    def __enter__(self) -> "Timeout":
+        warnings.warn(
+            "with timeout() is deprecated, use async with timeout() instead",
+            DeprecationWarning,
+            stacklevel=2,
+        )
+        self._do_enter()
+        return self
+
+    def __exit__(
+        self,
+        exc_type: Optional[Type[BaseException]],
+        exc_val: Optional[BaseException],
+        exc_tb: Optional[TracebackType],
+    ) -> Optional[bool]:
+        self._do_exit(exc_type)
+        return None
+
+    async def __aenter__(self) -> "Timeout":
+        self._do_enter()
+        return self
+
+    async def __aexit__(
+        self,
+        exc_type: Optional[Type[BaseException]],
+        exc_val: Optional[BaseException],
+        exc_tb: Optional[TracebackType],
+    ) -> Optional[bool]:
+        self._do_exit(exc_type)
+        return None
+
+    @property
+    def expired(self) -> bool:
+        """Is timeout expired during execution?"""
+        return self._state == _State.TIMEOUT
+
+    @property
+    def deadline(self) -> Optional[float]:
+        return self._deadline
+
+    def reject(self) -> None:
+        """Reject scheduled timeout if any."""
+        # cancel is maybe better name but
+        # task.cancel() raises CancelledError in asyncio world.
+        if self._state not in (_State.INIT, _State.ENTER):
+            raise RuntimeError(f"invalid state {self._state.value}")
+        self._reject()
+
+    def _reject(self) -> None:
+        if self._timeout_handler is not None:
+            self._timeout_handler.cancel()
+            self._timeout_handler = None
+
+    def shift(self, delay: float) -> None:
+        """Advance timeout on delay seconds.
+
+        The delay can be negative.
+
+        Raise RuntimeError if shift is called when deadline is not scheduled
+        """
+        deadline = self._deadline
+        if deadline is None:
+            raise RuntimeError("cannot shift timeout if deadline is not scheduled")
+        self.update(deadline + delay)
+
+    def update(self, deadline: float) -> None:
+        """Set deadline to absolute value.
+
+        deadline argument points on the time in the same clock system
+        as loop.time().
+
+        If new deadline is in the past the timeout is raised immediately.
+
+        Please note: it is not POSIX time but a time with
+        undefined starting base, e.g. the time of the system power on.
+        """
+        if self._state == _State.EXIT:
+            raise RuntimeError("cannot reschedule after exit from context manager")
+        if self._state == _State.TIMEOUT:
+            raise RuntimeError("cannot reschedule expired timeout")
+        if self._timeout_handler is not None:
+            self._timeout_handler.cancel()
+        self._deadline = deadline
+        if self._state != _State.INIT:
+            self._reschedule()
+
+    def _reschedule(self) -> None:
+        assert self._state == _State.ENTER
+        deadline = self._deadline
+        if deadline is None:
+            return
+
+        now = self._loop.time()
+        if self._timeout_handler is not None:
+            self._timeout_handler.cancel()
+
+        task = asyncio.current_task()
+        if deadline <= now:
+            self._timeout_handler = self._loop.call_soon(self._on_timeout, task)
+        else:
+            self._timeout_handler = self._loop.call_at(deadline, self._on_timeout, task)
+
+    def _do_enter(self) -> None:
+        if self._state != _State.INIT:
+            raise RuntimeError(f"invalid state {self._state.value}")
+        self._state = _State.ENTER
+        self._reschedule()
+
+    def _do_exit(self, exc_type: Optional[Type[BaseException]]) -> None:
+        if exc_type is asyncio.CancelledError and self._state == _State.TIMEOUT:
+            self._timeout_handler = None
+            raise asyncio.TimeoutError
+        # timeout has not expired
+        self._state = _State.EXIT
+        self._reject()
+        return None
+
+    def _on_timeout(self, task: "asyncio.Task[None]") -> None:
+        task.cancel()
+        self._state = _State.TIMEOUT
+        # drop the reference early
+        self._timeout_handler = None
+
+
+# End https://github.com/aio-libs/async-timeout/blob/master/async_timeout/__init__.py

videollama2/lib/python3.10/site-packages/websockets/legacy/auth.py

@@ -0,0 +1,184 @@
+from __future__ import annotations
+
+import functools
+import hmac
+import http
+from typing import Any, Awaitable, Callable, Iterable, Optional, Tuple, Union, cast
+
+from ..datastructures import Headers
+from ..exceptions import InvalidHeader
+from ..headers import build_www_authenticate_basic, parse_authorization_basic
+from .server import HTTPResponse, WebSocketServerProtocol
+
+
+__all__ = ["BasicAuthWebSocketServerProtocol", "basic_auth_protocol_factory"]
+
+Credentials = Tuple[str, str]
+
+
+def is_credentials(value: Any) -> bool:
+    try:
+        username, password = value
+    except (TypeError, ValueError):
+        return False
+    else:
+        return isinstance(username, str) and isinstance(password, str)
+
+
+class BasicAuthWebSocketServerProtocol(WebSocketServerProtocol):
+    """
+    WebSocket server protocol that enforces HTTP Basic Auth.
+
+    """
+
+    realm: str = ""
+    """
+    Scope of protection.
+
+    If provided, it should contain only ASCII characters because the
+    encoding of non-ASCII characters is undefined.
+    """
+
+    username: Optional[str] = None
+    """Username of the authenticated user."""
+
+    def __init__(
+        self,
+        *args: Any,
+        realm: Optional[str] = None,
+        check_credentials: Optional[Callable[[str, str], Awaitable[bool]]] = None,
+        **kwargs: Any,
+    ) -> None:
+        if realm is not None:
+            self.realm = realm  # shadow class attribute
+        self._check_credentials = check_credentials
+        super().__init__(*args, **kwargs)
+
+    async def check_credentials(self, username: str, password: str) -> bool:
+        """
+        Check whether credentials are authorized.
+
+        This coroutine may be overridden in a subclass, for example to
+        authenticate against a database or an external service.
+
+        Args:
+            username: HTTP Basic Auth username.
+            password: HTTP Basic Auth password.
+
+        Returns:
+            bool: :obj:`True` if the handshake should continue;
+            :obj:`False` if it should fail with an HTTP 401 error.
+
+        """
+        if self._check_credentials is not None:
+            return await self._check_credentials(username, password)
+
+        return False
+
+    async def process_request(
+        self,
+        path: str,
+        request_headers: Headers,
+    ) -> Optional[HTTPResponse]:
+        """
+        Check HTTP Basic Auth and return an HTTP 401 response if needed.
+
+        """
+        try:
+            authorization = request_headers["Authorization"]
+        except KeyError:
+            return (
+                http.HTTPStatus.UNAUTHORIZED,
+                [("WWW-Authenticate", build_www_authenticate_basic(self.realm))],
+                b"Missing credentials\n",
+            )
+
+        try:
+            username, password = parse_authorization_basic(authorization)
+        except InvalidHeader:
+            return (
+                http.HTTPStatus.UNAUTHORIZED,
+                [("WWW-Authenticate", build_www_authenticate_basic(self.realm))],
+                b"Unsupported credentials\n",
+            )
+
+        if not await self.check_credentials(username, password):
+            return (
+                http.HTTPStatus.UNAUTHORIZED,
+                [("WWW-Authenticate", build_www_authenticate_basic(self.realm))],
+                b"Invalid credentials\n",
+            )
+
+        self.username = username
+
+        return await super().process_request(path, request_headers)
+
+
+def basic_auth_protocol_factory(
+    realm: Optional[str] = None,
+    credentials: Optional[Union[Credentials, Iterable[Credentials]]] = None,
+    check_credentials: Optional[Callable[[str, str], Awaitable[bool]]] = None,
+    create_protocol: Optional[Callable[..., BasicAuthWebSocketServerProtocol]] = None,
+) -> Callable[..., BasicAuthWebSocketServerProtocol]:
+    """
+    Protocol factory that enforces HTTP Basic Auth.
+
+    :func:`basic_auth_protocol_factory` is designed to integrate with
+    :func:`~websockets.server.serve` like this::
+
+        websockets.serve(
+            ...,
+            create_protocol=websockets.basic_auth_protocol_factory(
+                realm="my dev server",
+                credentials=("hello", "iloveyou"),
+            )
+        )
+
+    Args:
+        realm: Scope of protection. It should contain only ASCII characters
+            because the encoding of non-ASCII characters is undefined.
+            Refer to section 2.2 of :rfc:`7235` for details.
+        credentials: Hard coded authorized credentials. It can be a
+            ``(username, password)`` pair or a list of such pairs.
+        check_credentials: Coroutine that verifies credentials.
+            It receives ``username`` and ``password`` arguments
+            and returns a :class:`bool`. One of ``credentials`` or
+            ``check_credentials`` must be provided but not both.
+        create_protocol: Factory that creates the protocol. By default, this
+            is :class:`BasicAuthWebSocketServerProtocol`. It can be replaced
+            by a subclass.
+    Raises:
+        TypeError: If the ``credentials`` or ``check_credentials`` argument is
+            wrong.
+
+    """
+    if (credentials is None) == (check_credentials is None):
+        raise TypeError("provide either credentials or check_credentials")
+
+    if credentials is not None:
+        if is_credentials(credentials):
+            credentials_list = [cast(Credentials, credentials)]
+        elif isinstance(credentials, Iterable):
+            credentials_list = list(credentials)
+            if not all(is_credentials(item) for item in credentials_list):
+                raise TypeError(f"invalid credentials argument: {credentials}")
+        else:
+            raise TypeError(f"invalid credentials argument: {credentials}")
+
+        credentials_dict = dict(credentials_list)
+
+        async def check_credentials(username: str, password: str) -> bool:
+            try:
+                expected_password = credentials_dict[username]
+            except KeyError:
+                return False
+            return hmac.compare_digest(expected_password, password)
+
+    if create_protocol is None:
+        create_protocol = BasicAuthWebSocketServerProtocol
+
+    return functools.partial(
+        create_protocol,
+        realm=realm,
+        check_credentials=check_credentials,
+    )

videollama2/lib/python3.10/site-packages/websockets/legacy/client.py

@@ -0,0 +1,713 @@
+from __future__ import annotations
+
+import asyncio
+import functools
+import logging
+import random
+import urllib.parse
+import warnings
+from types import TracebackType
+from typing import (
+    Any,
+    AsyncIterator,
+    Callable,
+    Generator,
+    List,
+    Optional,
+    Sequence,
+    Tuple,
+    Type,
+    cast,
+)
+
+from ..datastructures import Headers, HeadersLike
+from ..exceptions import (
+    InvalidHandshake,
+    InvalidHeader,
+    InvalidMessage,
+    InvalidStatusCode,
+    NegotiationError,
+    RedirectHandshake,
+    SecurityError,
+)
+from ..extensions import ClientExtensionFactory, Extension
+from ..extensions.permessage_deflate import enable_client_permessage_deflate
+from ..headers import (
+    build_authorization_basic,
+    build_extension,
+    build_host,
+    build_subprotocol,
+    parse_extension,
+    parse_subprotocol,
+    validate_subprotocols,
+)
+from ..http import USER_AGENT
+from ..typing import ExtensionHeader, LoggerLike, Origin, Subprotocol
+from ..uri import WebSocketURI, parse_uri
+from .compatibility import asyncio_timeout
+from .handshake import build_request, check_response
+from .http import read_response
+from .protocol import WebSocketCommonProtocol
+
+
+__all__ = ["connect", "unix_connect", "WebSocketClientProtocol"]
+
+
+class WebSocketClientProtocol(WebSocketCommonProtocol):
+    """
+    WebSocket client connection.
+
+    :class:`WebSocketClientProtocol` provides :meth:`recv` and :meth:`send`
+    coroutines for receiving and sending messages.
+
+    It supports asynchronous iteration to receive incoming messages::
+
+        async for message in websocket:
+            await process(message)
+
+    The iterator exits normally when the connection is closed with close code
+    1000 (OK) or 1001 (going away) or without a close code. It raises
+    a :exc:`~websockets.exceptions.ConnectionClosedError` when the connection
+    is closed with any other code.
+
+    See :func:`connect` for the documentation of ``logger``, ``origin``,
+    ``extensions``, ``subprotocols``, ``extra_headers``, and
+    ``user_agent_header``.
+
+    See :class:`~websockets.legacy.protocol.WebSocketCommonProtocol` for the
+    documentation of ``ping_interval``, ``ping_timeout``, ``close_timeout``,
+    ``max_size``, ``max_queue``, ``read_limit``, and ``write_limit``.
+
+    """
+
+    is_client = True
+    side = "client"
+
+    def __init__(
+        self,
+        *,
+        logger: Optional[LoggerLike] = None,
+        origin: Optional[Origin] = None,
+        extensions: Optional[Sequence[ClientExtensionFactory]] = None,
+        subprotocols: Optional[Sequence[Subprotocol]] = None,
+        extra_headers: Optional[HeadersLike] = None,
+        user_agent_header: Optional[str] = USER_AGENT,
+        **kwargs: Any,
+    ) -> None:
+        if logger is None:
+            logger = logging.getLogger("websockets.client")
+        super().__init__(logger=logger, **kwargs)
+        self.origin = origin
+        self.available_extensions = extensions
+        self.available_subprotocols = subprotocols
+        self.extra_headers = extra_headers
+        self.user_agent_header = user_agent_header
+
+    def write_http_request(self, path: str, headers: Headers) -> None:
+        """
+        Write request line and headers to the HTTP request.
+
+        """
+        self.path = path
+        self.request_headers = headers
+
+        if self.debug:
+            self.logger.debug("> GET %s HTTP/1.1", path)
+            for key, value in headers.raw_items():
+                self.logger.debug("> %s: %s", key, value)
+
+        # Since the path and headers only contain ASCII characters,
+        # we can keep this simple.
+        request = f"GET {path} HTTP/1.1\r\n"
+        request += str(headers)
+
+        self.transport.write(request.encode())
+
+    async def read_http_response(self) -> Tuple[int, Headers]:
+        """
+        Read status line and headers from the HTTP response.
+
+        If the response contains a body, it may be read from ``self.reader``
+        after this coroutine returns.
+
+        Raises:
+            InvalidMessage: If the HTTP message is malformed or isn't an
+                HTTP/1.1 GET response.
+
+        """
+        try:
+            status_code, reason, headers = await read_response(self.reader)
+        # Remove this branch when dropping support for Python < 3.8
+        # because CancelledError no longer inherits Exception.
+        except asyncio.CancelledError:  # pragma: no cover
+            raise
+        except Exception as exc:
+            raise InvalidMessage("did not receive a valid HTTP response") from exc
+
+        if self.debug:
+            self.logger.debug("< HTTP/1.1 %d %s", status_code, reason)
+            for key, value in headers.raw_items():
+                self.logger.debug("< %s: %s", key, value)
+
+        self.response_headers = headers
+
+        return status_code, self.response_headers
+
+    @staticmethod
+    def process_extensions(
+        headers: Headers,
+        available_extensions: Optional[Sequence[ClientExtensionFactory]],
+    ) -> List[Extension]:
+        """
+        Handle the Sec-WebSocket-Extensions HTTP response header.
+
+        Check that each extension is supported, as well as its parameters.
+
+        Return the list of accepted extensions.
+
+        Raise :exc:`~websockets.exceptions.InvalidHandshake` to abort the
+        connection.
+
+        :rfc:`6455` leaves the rules up to the specification of each
+        :extension.
+
+        To provide this level of flexibility, for each extension accepted by
+        the server, we check for a match with each extension available in the
+        client configuration. If no match is found, an exception is raised.
+
+        If several variants of the same extension are accepted by the server,
+        it may be configured several times, which won't make sense in general.
+        Extensions must implement their own requirements. For this purpose,
+        the list of previously accepted extensions is provided.
+
+        Other requirements, for example related to mandatory extensions or the
+        order of extensions, may be implemented by overriding this method.
+
+        """
+        accepted_extensions: List[Extension] = []
+
+        header_values = headers.get_all("Sec-WebSocket-Extensions")
+
+        if header_values:
+            if available_extensions is None:
+                raise InvalidHandshake("no extensions supported")
+
+            parsed_header_values: List[ExtensionHeader] = sum(
+                [parse_extension(header_value) for header_value in header_values], []
+            )
+
+            for name, response_params in parsed_header_values:
+                for extension_factory in available_extensions:
+                    # Skip non-matching extensions based on their name.
+                    if extension_factory.name != name:
+                        continue
+
+                    # Skip non-matching extensions based on their params.
+                    try:
+                        extension = extension_factory.process_response_params(
+                            response_params, accepted_extensions
+                        )
+                    except NegotiationError:
+                        continue
+
+                    # Add matching extension to the final list.
+                    accepted_extensions.append(extension)
+
+                    # Break out of the loop once we have a match.
+                    break
+
+                # If we didn't break from the loop, no extension in our list
+                # matched what the server sent. Fail the connection.
+                else:
+                    raise NegotiationError(
+                        f"Unsupported extension: "
+                        f"name = {name}, params = {response_params}"
+                    )
+
+        return accepted_extensions
+
+    @staticmethod
+    def process_subprotocol(
+        headers: Headers, available_subprotocols: Optional[Sequence[Subprotocol]]
+    ) -> Optional[Subprotocol]:
+        """
+        Handle the Sec-WebSocket-Protocol HTTP response header.
+
+        Check that it contains exactly one supported subprotocol.
+
+        Return the selected subprotocol.
+
+        """
+        subprotocol: Optional[Subprotocol] = None
+
+        header_values = headers.get_all("Sec-WebSocket-Protocol")
+
+        if header_values:
+            if available_subprotocols is None:
+                raise InvalidHandshake("no subprotocols supported")
+
+            parsed_header_values: Sequence[Subprotocol] = sum(
+                [parse_subprotocol(header_value) for header_value in header_values], []
+            )
+
+            if len(parsed_header_values) > 1:
+                subprotocols = ", ".join(parsed_header_values)
+                raise InvalidHandshake(f"multiple subprotocols: {subprotocols}")
+
+            subprotocol = parsed_header_values[0]
+
+            if subprotocol not in available_subprotocols:
+                raise NegotiationError(f"unsupported subprotocol: {subprotocol}")
+
+        return subprotocol
+
+    async def handshake(
+        self,
+        wsuri: WebSocketURI,
+        origin: Optional[Origin] = None,
+        available_extensions: Optional[Sequence[ClientExtensionFactory]] = None,
+        available_subprotocols: Optional[Sequence[Subprotocol]] = None,
+        extra_headers: Optional[HeadersLike] = None,
+    ) -> None:
+        """
+        Perform the client side of the opening handshake.
+
+        Args:
+            wsuri: URI of the WebSocket server.
+            origin: Value of the ``Origin`` header.
+            extensions: List of supported extensions, in order in which they
+                should be negotiated and run.
+            subprotocols: List of supported subprotocols, in order of decreasing
+                preference.
+            extra_headers: Arbitrary HTTP headers to add to the handshake request.
+
+        Raises:
+            InvalidHandshake: If the handshake fails.
+
+        """
+        request_headers = Headers()
+
+        request_headers["Host"] = build_host(wsuri.host, wsuri.port, wsuri.secure)
+
+        if wsuri.user_info:
+            request_headers["Authorization"] = build_authorization_basic(
+                *wsuri.user_info
+            )
+
+        if origin is not None:
+            request_headers["Origin"] = origin
+
+        key = build_request(request_headers)
+
+        if available_extensions is not None:
+            extensions_header = build_extension(
+                [
+                    (extension_factory.name, extension_factory.get_request_params())
+                    for extension_factory in available_extensions
+                ]
+            )
+            request_headers["Sec-WebSocket-Extensions"] = extensions_header
+
+        if available_subprotocols is not None:
+            protocol_header = build_subprotocol(available_subprotocols)
+            request_headers["Sec-WebSocket-Protocol"] = protocol_header
+
+        if self.extra_headers is not None:
+            request_headers.update(self.extra_headers)
+
+        if self.user_agent_header is not None:
+            request_headers.setdefault("User-Agent", self.user_agent_header)
+
+        self.write_http_request(wsuri.resource_name, request_headers)
+
+        status_code, response_headers = await self.read_http_response()
+        if status_code in (301, 302, 303, 307, 308):
+            if "Location" not in response_headers:
+                raise InvalidHeader("Location")
+            raise RedirectHandshake(response_headers["Location"])
+        elif status_code != 101:
+            raise InvalidStatusCode(status_code, response_headers)
+
+        check_response(response_headers, key)
+
+        self.extensions = self.process_extensions(
+            response_headers, available_extensions
+        )
+
+        self.subprotocol = self.process_subprotocol(
+            response_headers, available_subprotocols
+        )
+
+        self.connection_open()
+
+
+class Connect:
+    """
+    Connect to the WebSocket server at ``uri``.
+
+    Awaiting :func:`connect` yields a :class:`WebSocketClientProtocol` which
+    can then be used to send and receive messages.
+
+    :func:`connect` can be used as a asynchronous context manager::
+
+        async with websockets.connect(...) as websocket:
+            ...
+
+    The connection is closed automatically when exiting the context.
+
+    :func:`connect` can be used as an infinite asynchronous iterator to
+    reconnect automatically on errors::
+
+        async for websocket in websockets.connect(...):
+            try:
+                ...
+            except websockets.ConnectionClosed:
+                continue
+
+    The connection is closed automatically after each iteration of the loop.
+
+    If an error occurs while establishing the connection, :func:`connect`
+    retries with exponential backoff. The backoff delay starts at three
+    seconds and increases up to one minute.
+
+    If an error occurs in the body of the loop, you can handle the exception
+    and :func:`connect` will reconnect with the next iteration; or you can
+    let the exception bubble up and break out of the loop. This lets you
+    decide which errors trigger a reconnection and which errors are fatal.
+
+    Args:
+        uri: URI of the WebSocket server.
+        create_protocol: Factory for the :class:`asyncio.Protocol` managing
+            the connection. It defaults to :class:`WebSocketClientProtocol`.
+            Set it to a wrapper or a subclass to customize connection handling.
+        logger: Logger for this client.
+            It defaults to ``logging.getLogger("websockets.client")``.
+            See the :doc:`logging guide <../../topics/logging>` for details.
+        compression: The "permessage-deflate" extension is enabled by default.
+            Set ``compression`` to :obj:`None` to disable it. See the
+            :doc:`compression guide <../../topics/compression>` for details.
+        origin: Value of the ``Origin`` header, for servers that require it.
+        extensions: List of supported extensions, in order in which they
+            should be negotiated and run.
+        subprotocols: List of supported subprotocols, in order of decreasing
+            preference.
+        extra_headers: Arbitrary HTTP headers to add to the handshake request.
+        user_agent_header: Value of  the ``User-Agent`` request header.
+            It defaults to ``"Python/x.y.z websockets/X.Y"``.
+            Setting it to :obj:`None` removes the header.
+        open_timeout: Timeout for opening the connection in seconds.
+            :obj:`None` disables the timeout.
+
+    See :class:`~websockets.legacy.protocol.WebSocketCommonProtocol` for the
+    documentation of ``ping_interval``, ``ping_timeout``, ``close_timeout``,
+    ``max_size``, ``max_queue``, ``read_limit``, and ``write_limit``.
+
+    Any other keyword arguments are passed the event loop's
+    :meth:`~asyncio.loop.create_connection` method.
+
+    For example:
+
+    * You can set ``ssl`` to a :class:`~ssl.SSLContext` to enforce TLS
+      settings. When connecting to a ``wss://`` URI, if ``ssl`` isn't
+      provided, a TLS context is created
+      with :func:`~ssl.create_default_context`.
+
+    * You can set ``host`` and ``port`` to connect to a different host and
+      port from those found in ``uri``. This only changes the destination of
+      the TCP connection. The host name from ``uri`` is still used in the TLS
+      handshake for secure connections and in the ``Host`` header.
+
+    Raises:
+        InvalidURI: If ``uri`` isn't a valid WebSocket URI.
+        OSError: If the TCP connection fails.
+        InvalidHandshake: If the opening handshake fails.
+        ~asyncio.TimeoutError: If the opening handshake times out.
+
+    """
+
+    MAX_REDIRECTS_ALLOWED = 10
+
+    def __init__(
+        self,
+        uri: str,
+        *,
+        create_protocol: Optional[Callable[..., WebSocketClientProtocol]] = None,
+        logger: Optional[LoggerLike] = None,
+        compression: Optional[str] = "deflate",
+        origin: Optional[Origin] = None,
+        extensions: Optional[Sequence[ClientExtensionFactory]] = None,
+        subprotocols: Optional[Sequence[Subprotocol]] = None,
+        extra_headers: Optional[HeadersLike] = None,
+        user_agent_header: Optional[str] = USER_AGENT,
+        open_timeout: Optional[float] = 10,
+        ping_interval: Optional[float] = 20,
+        ping_timeout: Optional[float] = 20,
+        close_timeout: Optional[float] = None,
+        max_size: Optional[int] = 2**20,
+        max_queue: Optional[int] = 2**5,
+        read_limit: int = 2**16,
+        write_limit: int = 2**16,
+        **kwargs: Any,
+    ) -> None:
+        # Backwards compatibility: close_timeout used to be called timeout.
+        timeout: Optional[float] = kwargs.pop("timeout", None)
+        if timeout is None:
+            timeout = 10
+        else:
+            warnings.warn("rename timeout to close_timeout", DeprecationWarning)
+        # If both are specified, timeout is ignored.
+        if close_timeout is None:
+            close_timeout = timeout
+
+        # Backwards compatibility: create_protocol used to be called klass.
+        klass: Optional[Type[WebSocketClientProtocol]] = kwargs.pop("klass", None)
+        if klass is None:
+            klass = WebSocketClientProtocol
+        else:
+            warnings.warn("rename klass to create_protocol", DeprecationWarning)
+        # If both are specified, klass is ignored.
+        if create_protocol is None:
+            create_protocol = klass
+
+        # Backwards compatibility: recv() used to return None on closed connections
+        legacy_recv: bool = kwargs.pop("legacy_recv", False)
+
+        # Backwards compatibility: the loop parameter used to be supported.
+        _loop: Optional[asyncio.AbstractEventLoop] = kwargs.pop("loop", None)
+        if _loop is None:
+            loop = asyncio.get_event_loop()
+        else:
+            loop = _loop
+            warnings.warn("remove loop argument", DeprecationWarning)
+
+        wsuri = parse_uri(uri)
+        if wsuri.secure:
+            kwargs.setdefault("ssl", True)
+        elif kwargs.get("ssl") is not None:
+            raise ValueError(
+                "connect() received a ssl argument for a ws:// URI, "
+                "use a wss:// URI to enable TLS"
+            )
+
+        if compression == "deflate":
+            extensions = enable_client_permessage_deflate(extensions)
+        elif compression is not None:
+            raise ValueError(f"unsupported compression: {compression}")
+
+        if subprotocols is not None:
+            validate_subprotocols(subprotocols)
+
+        factory = functools.partial(
+            create_protocol,
+            logger=logger,
+            origin=origin,
+            extensions=extensions,
+            subprotocols=subprotocols,
+            extra_headers=extra_headers,
+            user_agent_header=user_agent_header,
+            ping_interval=ping_interval,
+            ping_timeout=ping_timeout,
+            close_timeout=close_timeout,
+            max_size=max_size,
+            max_queue=max_queue,
+            read_limit=read_limit,
+            write_limit=write_limit,
+            host=wsuri.host,
+            port=wsuri.port,
+            secure=wsuri.secure,
+            legacy_recv=legacy_recv,
+            loop=_loop,
+        )
+
+        if kwargs.pop("unix", False):
+            path: Optional[str] = kwargs.pop("path", None)
+            create_connection = functools.partial(
+                loop.create_unix_connection, factory, path, **kwargs
+            )
+        else:
+            host: Optional[str]
+            port: Optional[int]
+            if kwargs.get("sock") is None:
+                host, port = wsuri.host, wsuri.port
+            else:
+                # If sock is given, host and port shouldn't be specified.
+                host, port = None, None
+                if kwargs.get("ssl"):
+                    kwargs.setdefault("server_hostname", wsuri.host)
+            # If host and port are given, override values from the URI.
+            host = kwargs.pop("host", host)
+            port = kwargs.pop("port", port)
+            create_connection = functools.partial(
+                loop.create_connection, factory, host, port, **kwargs
+            )
+
+        self.open_timeout = open_timeout
+        if logger is None:
+            logger = logging.getLogger("websockets.client")
+        self.logger = logger
+
+        # This is a coroutine function.
+        self._create_connection = create_connection
+        self._uri = uri
+        self._wsuri = wsuri
+
+    def handle_redirect(self, uri: str) -> None:
+        # Update the state of this instance to connect to a new URI.
+        old_uri = self._uri
+        old_wsuri = self._wsuri
+        new_uri = urllib.parse.urljoin(old_uri, uri)
+        new_wsuri = parse_uri(new_uri)
+
+        # Forbid TLS downgrade.
+        if old_wsuri.secure and not new_wsuri.secure:
+            raise SecurityError("redirect from WSS to WS")
+
+        same_origin = (
+            old_wsuri.host == new_wsuri.host and old_wsuri.port == new_wsuri.port
+        )
+
+        # Rewrite the host and port arguments for cross-origin redirects.
+        # This preserves connection overrides with the host and port
+        # arguments if the redirect points to the same host and port.
+        if not same_origin:
+            # Replace the host and port argument passed to the protocol factory.
+            factory = self._create_connection.args[0]
+            factory = functools.partial(
+                factory.func,
+                *factory.args,
+                **dict(factory.keywords, host=new_wsuri.host, port=new_wsuri.port),
+            )
+            # Replace the host and port argument passed to create_connection.
+            self._create_connection = functools.partial(
+                self._create_connection.func,
+                *(factory, new_wsuri.host, new_wsuri.port),
+                **self._create_connection.keywords,
+            )
+
+        # Set the new WebSocket URI. This suffices for same-origin redirects.
+        self._uri = new_uri
+        self._wsuri = new_wsuri
+
+    # async for ... in connect(...):
+
+    BACKOFF_MIN = 1.92
+    BACKOFF_MAX = 60.0
+    BACKOFF_FACTOR = 1.618
+    BACKOFF_INITIAL = 5
+
+    async def __aiter__(self) -> AsyncIterator[WebSocketClientProtocol]:
+        backoff_delay = self.BACKOFF_MIN
+        while True:
+            try:
+                async with self as protocol:
+                    yield protocol
+            # Remove this branch when dropping support for Python < 3.8
+            # because CancelledError no longer inherits Exception.
+            except asyncio.CancelledError:  # pragma: no cover
+                raise
+            except Exception:
+                # Add a random initial delay between 0 and 5 seconds.
+                # See 7.2.3. Recovering from Abnormal Closure in RFC 6544.
+                if backoff_delay == self.BACKOFF_MIN:
+                    initial_delay = random.random() * self.BACKOFF_INITIAL
+                    self.logger.info(
+                        "! connect failed; reconnecting in %.1f seconds",
+                        initial_delay,
+                        exc_info=True,
+                    )
+                    await asyncio.sleep(initial_delay)
+                else:
+                    self.logger.info(
+                        "! connect failed again; retrying in %d seconds",
+                        int(backoff_delay),
+                        exc_info=True,
+                    )
+                    await asyncio.sleep(int(backoff_delay))
+                # Increase delay with truncated exponential backoff.
+                backoff_delay = backoff_delay * self.BACKOFF_FACTOR
+                backoff_delay = min(backoff_delay, self.BACKOFF_MAX)
+                continue
+            else:
+                # Connection succeeded - reset backoff delay
+                backoff_delay = self.BACKOFF_MIN
+
+    # async with connect(...) as ...:
+
+    async def __aenter__(self) -> WebSocketClientProtocol:
+        return await self
+
+    async def __aexit__(
+        self,
+        exc_type: Optional[Type[BaseException]],
+        exc_value: Optional[BaseException],
+        traceback: Optional[TracebackType],
+    ) -> None:
+        await self.protocol.close()
+
+    # ... = await connect(...)
+
+    def __await__(self) -> Generator[Any, None, WebSocketClientProtocol]:
+        # Create a suitable iterator by calling __await__ on a coroutine.
+        return self.__await_impl_timeout__().__await__()
+
+    async def __await_impl_timeout__(self) -> WebSocketClientProtocol:
+        async with asyncio_timeout(self.open_timeout):
+            return await self.__await_impl__()
+
+    async def __await_impl__(self) -> WebSocketClientProtocol:
+        for redirects in range(self.MAX_REDIRECTS_ALLOWED):
+            _transport, _protocol = await self._create_connection()
+            protocol = cast(WebSocketClientProtocol, _protocol)
+            try:
+                await protocol.handshake(
+                    self._wsuri,
+                    origin=protocol.origin,
+                    available_extensions=protocol.available_extensions,
+                    available_subprotocols=protocol.available_subprotocols,
+                    extra_headers=protocol.extra_headers,
+                )
+            except RedirectHandshake as exc:
+                protocol.fail_connection()
+                await protocol.wait_closed()
+                self.handle_redirect(exc.uri)
+            # Avoid leaking a connected socket when the handshake fails.
+            except (Exception, asyncio.CancelledError):
+                protocol.fail_connection()
+                await protocol.wait_closed()
+                raise
+            else:
+                self.protocol = protocol
+                return protocol
+        else:
+            raise SecurityError("too many redirects")
+
+    # ... = yield from connect(...) - remove when dropping Python < 3.10
+
+    __iter__ = __await__
+
+
+connect = Connect
+
+
+def unix_connect(
+    path: Optional[str] = None,
+    uri: str = "ws://localhost/",
+    **kwargs: Any,
+) -> Connect:
+    """
+    Similar to :func:`connect`, but for connecting to a Unix socket.
+
+    This function builds upon the event loop's
+    :meth:`~asyncio.loop.create_unix_connection` method.
+
+    It is only available on Unix.
+
+    It's mainly useful for debugging servers listening on Unix sockets.
+
+    Args:
+        path: File system path to the Unix socket.
+        uri: URI of the WebSocket server; the host is used in the TLS
+            handshake for secure connections and in the ``Host`` header.
+
+    """
+    return connect(uri=uri, path=path, unix=True, **kwargs)

videollama2/lib/python3.10/site-packages/websockets/legacy/compatibility.py

@@ -0,0 +1,33 @@
+from __future__ import annotations
+
+import asyncio
+import sys
+from typing import Any, Dict
+
+
+__all__ = ["asyncio_timeout", "loop_if_py_lt_38"]
+
+
+if sys.version_info[:2] >= (3, 8):
+
+    def loop_if_py_lt_38(loop: asyncio.AbstractEventLoop) -> Dict[str, Any]:
+        """
+        Helper for the removal of the loop argument in Python 3.10.
+
+        """
+        return {}
+
+else:
+
+    def loop_if_py_lt_38(loop: asyncio.AbstractEventLoop) -> Dict[str, Any]:
+        """
+        Helper for the removal of the loop argument in Python 3.10.
+
+        """
+        return {"loop": loop}
+
+
+if sys.version_info[:2] >= (3, 11):
+    from asyncio import timeout as asyncio_timeout  # noqa: F401
+else:
+    from .async_timeout import timeout as asyncio_timeout  # noqa: F401

videollama2/lib/python3.10/site-packages/websockets/legacy/framing.py

@@ -0,0 +1,176 @@
+from __future__ import annotations
+
+import struct
+from typing import Any, Awaitable, Callable, NamedTuple, Optional, Sequence, Tuple
+
+from .. import extensions, frames
+from ..exceptions import PayloadTooBig, ProtocolError
+
+
+try:
+    from ..speedups import apply_mask
+except ImportError:
+    from ..utils import apply_mask
+
+
+class Frame(NamedTuple):
+    fin: bool
+    opcode: frames.Opcode
+    data: bytes
+    rsv1: bool = False
+    rsv2: bool = False
+    rsv3: bool = False
+
+    @property
+    def new_frame(self) -> frames.Frame:
+        return frames.Frame(
+            self.opcode,
+            self.data,
+            self.fin,
+            self.rsv1,
+            self.rsv2,
+            self.rsv3,
+        )
+
+    def __str__(self) -> str:
+        return str(self.new_frame)
+
+    def check(self) -> None:
+        return self.new_frame.check()
+
+    @classmethod
+    async def read(
+        cls,
+        reader: Callable[[int], Awaitable[bytes]],
+        *,
+        mask: bool,
+        max_size: Optional[int] = None,
+        extensions: Optional[Sequence[extensions.Extension]] = None,
+    ) -> Frame:
+        """
+        Read a WebSocket frame.
+
+        Args:
+            reader: Coroutine that reads exactly the requested number of
+                bytes, unless the end of file is reached.
+            mask: Whether the frame should be masked i.e. whether the read
+                happens on the server side.
+            max_size: Maximum payload size in bytes.
+            extensions: List of extensions, applied in reverse order.
+
+        Raises:
+            PayloadTooBig: If the frame exceeds ``max_size``.
+            ProtocolError: If the frame contains incorrect values.
+
+        """
+
+        # Read the header.
+        data = await reader(2)
+        head1, head2 = struct.unpack("!BB", data)
+
+        # While not Pythonic, this is marginally faster than calling bool().
+        fin = True if head1 & 0b10000000 else False
+        rsv1 = True if head1 & 0b01000000 else False
+        rsv2 = True if head1 & 0b00100000 else False
+        rsv3 = True if head1 & 0b00010000 else False
+
+        try:
+            opcode = frames.Opcode(head1 & 0b00001111)
+        except ValueError as exc:
+            raise ProtocolError("invalid opcode") from exc
+
+        if (True if head2 & 0b10000000 else False) != mask:
+            raise ProtocolError("incorrect masking")
+
+        length = head2 & 0b01111111
+        if length == 126:
+            data = await reader(2)
+            (length,) = struct.unpack("!H", data)
+        elif length == 127:
+            data = await reader(8)
+            (length,) = struct.unpack("!Q", data)
+        if max_size is not None and length > max_size:
+            raise PayloadTooBig(f"over size limit ({length} > {max_size} bytes)")
+        if mask:
+            mask_bits = await reader(4)
+
+        # Read the data.
+        data = await reader(length)
+        if mask:
+            data = apply_mask(data, mask_bits)
+
+        new_frame = frames.Frame(opcode, data, fin, rsv1, rsv2, rsv3)
+
+        if extensions is None:
+            extensions = []
+        for extension in reversed(extensions):
+            new_frame = extension.decode(new_frame, max_size=max_size)
+
+        new_frame.check()
+
+        return cls(
+            new_frame.fin,
+            new_frame.opcode,
+            new_frame.data,
+            new_frame.rsv1,
+            new_frame.rsv2,
+            new_frame.rsv3,
+        )
+
+    def write(
+        self,
+        write: Callable[[bytes], Any],
+        *,
+        mask: bool,
+        extensions: Optional[Sequence[extensions.Extension]] = None,
+    ) -> None:
+        """
+        Write a WebSocket frame.
+
+        Args:
+            frame: Frame to write.
+            write: Function that writes bytes.
+            mask: Whether the frame should be masked i.e. whether the write
+                happens on the client side.
+            extensions: List of extensions, applied in order.
+
+        Raises:
+            ProtocolError: If the frame contains incorrect values.
+
+        """
+        # The frame is written in a single call to write in order to prevent
+        # TCP fragmentation. See #68 for details. This also makes it safe to
+        # send frames concurrently from multiple coroutines.
+        write(self.new_frame.serialize(mask=mask, extensions=extensions))
+
+
+# Backwards compatibility with previously documented public APIs
+from ..frames import (  # noqa: E402, F401, I001
+    Close,
+    prepare_ctrl as encode_data,
+    prepare_data,
+)
+
+
+def parse_close(data: bytes) -> Tuple[int, str]:
+    """
+    Parse the payload from a close frame.
+
+    Returns:
+        Close code and reason.
+
+    Raises:
+        ProtocolError: If data is ill-formed.
+        UnicodeDecodeError: If the reason isn't valid UTF-8.
+
+    """
+    close = Close.parse(data)
+    return close.code, close.reason
+
+
+def serialize_close(code: int, reason: str) -> bytes:
+    """
+    Serialize the payload for a close frame.
+
+    """
+    return Close(code, reason).serialize()

videollama2/lib/python3.10/site-packages/websockets/legacy/handshake.py

@@ -0,0 +1,165 @@
+from __future__ import annotations
+
+import base64
+import binascii
+from typing import List
+
+from ..datastructures import Headers, MultipleValuesError
+from ..exceptions import InvalidHeader, InvalidHeaderValue, InvalidUpgrade
+from ..headers import parse_connection, parse_upgrade
+from ..typing import ConnectionOption, UpgradeProtocol
+from ..utils import accept_key as accept, generate_key
+
+
+__all__ = ["build_request", "check_request", "build_response", "check_response"]
+
+
+def build_request(headers: Headers) -> str:
+    """
+    Build a handshake request to send to the server.
+
+    Update request headers passed in argument.
+
+    Args:
+        headers: Handshake request headers.
+
+    Returns:
+        str: ``key`` that must be passed to :func:`check_response`.
+
+    """
+    key = generate_key()
+    headers["Upgrade"] = "websocket"
+    headers["Connection"] = "Upgrade"
+    headers["Sec-WebSocket-Key"] = key
+    headers["Sec-WebSocket-Version"] = "13"
+    return key
+
+
+def check_request(headers: Headers) -> str:
+    """
+    Check a handshake request received from the client.
+
+    This function doesn't verify that the request is an HTTP/1.1 or higher GET
+    request and doesn't perform ``Host`` and ``Origin`` checks. These controls
+    are usually performed earlier in the HTTP request handling code. They're
+    the responsibility of the caller.
+
+    Args:
+        headers: Handshake request headers.
+
+    Returns:
+        str: ``key`` that must be passed to :func:`build_response`.
+
+    Raises:
+        InvalidHandshake: If the handshake request is invalid.
+            Then, the server must return a 400 Bad Request error.
+
+    """
+    connection: List[ConnectionOption] = sum(
+        [parse_connection(value) for value in headers.get_all("Connection")], []
+    )
+
+    if not any(value.lower() == "upgrade" for value in connection):
+        raise InvalidUpgrade("Connection", ", ".join(connection))
+
+    upgrade: List[UpgradeProtocol] = sum(
+        [parse_upgrade(value) for value in headers.get_all("Upgrade")], []
+    )
+
+    # For compatibility with non-strict implementations, ignore case when
+    # checking the Upgrade header. The RFC always uses "websocket", except
+    # in section 11.2. (IANA registration) where it uses "WebSocket".
+    if not (len(upgrade) == 1 and upgrade[0].lower() == "websocket"):
+        raise InvalidUpgrade("Upgrade", ", ".join(upgrade))
+
+    try:
+        s_w_key = headers["Sec-WebSocket-Key"]
+    except KeyError as exc:
+        raise InvalidHeader("Sec-WebSocket-Key") from exc
+    except MultipleValuesError as exc:
+        raise InvalidHeader(
+            "Sec-WebSocket-Key", "more than one Sec-WebSocket-Key header found"
+        ) from exc
+
+    try:
+        raw_key = base64.b64decode(s_w_key.encode(), validate=True)
+    except binascii.Error as exc:
+        raise InvalidHeaderValue("Sec-WebSocket-Key", s_w_key) from exc
+    if len(raw_key) != 16:
+        raise InvalidHeaderValue("Sec-WebSocket-Key", s_w_key)
+
+    try:
+        s_w_version = headers["Sec-WebSocket-Version"]
+    except KeyError as exc:
+        raise InvalidHeader("Sec-WebSocket-Version") from exc
+    except MultipleValuesError as exc:
+        raise InvalidHeader(
+            "Sec-WebSocket-Version", "more than one Sec-WebSocket-Version header found"
+        ) from exc
+
+    if s_w_version != "13":
+        raise InvalidHeaderValue("Sec-WebSocket-Version", s_w_version)
+
+    return s_w_key
+
+
+def build_response(headers: Headers, key: str) -> None:
+    """
+    Build a handshake response to send to the client.
+
+    Update response headers passed in argument.
+
+    Args:
+        headers: Handshake response headers.
+        key: Returned by :func:`check_request`.
+
+    """
+    headers["Upgrade"] = "websocket"
+    headers["Connection"] = "Upgrade"
+    headers["Sec-WebSocket-Accept"] = accept(key)
+
+
+def check_response(headers: Headers, key: str) -> None:
+    """
+    Check a handshake response received from the server.
+
+    This function doesn't verify that the response is an HTTP/1.1 or higher
+    response with a 101 status code. These controls are the responsibility of
+    the caller.
+
+    Args:
+        headers: Handshake response headers.
+        key: Returned by :func:`build_request`.
+
+    Raises:
+        InvalidHandshake: If the handshake response is invalid.
+
+    """
+    connection: List[ConnectionOption] = sum(
+        [parse_connection(value) for value in headers.get_all("Connection")], []
+    )
+
+    if not any(value.lower() == "upgrade" for value in connection):
+        raise InvalidUpgrade("Connection", " ".join(connection))
+
+    upgrade: List[UpgradeProtocol] = sum(
+        [parse_upgrade(value) for value in headers.get_all("Upgrade")], []
+    )
+
+    # For compatibility with non-strict implementations, ignore case when
+    # checking the Upgrade header. The RFC always uses "websocket", except
+    # in section 11.2. (IANA registration) where it uses "WebSocket".
+    if not (len(upgrade) == 1 and upgrade[0].lower() == "websocket"):
+        raise InvalidUpgrade("Upgrade", ", ".join(upgrade))
+
+    try:
+        s_w_accept = headers["Sec-WebSocket-Accept"]
+    except KeyError as exc:
+        raise InvalidHeader("Sec-WebSocket-Accept") from exc
+    except MultipleValuesError as exc:
+        raise InvalidHeader(
+            "Sec-WebSocket-Accept", "more than one Sec-WebSocket-Accept header found"
+        ) from exc
+
+    if s_w_accept != accept(key):
+        raise InvalidHeaderValue("Sec-WebSocket-Accept", s_w_accept)