update to python fastpi

Backend/venv/lib/python3.12/site-packages/anyio/__init__.py

@@ -0,0 +1,169 @@
+from __future__ import annotations
+
+__all__ = (
+    "maybe_async",
+    "maybe_async_cm",
+    "run",
+    "sleep",
+    "sleep_forever",
+    "sleep_until",
+    "current_time",
+    "get_all_backends",
+    "get_cancelled_exc_class",
+    "BrokenResourceError",
+    "BrokenWorkerProcess",
+    "BusyResourceError",
+    "ClosedResourceError",
+    "DelimiterNotFound",
+    "EndOfStream",
+    "ExceptionGroup",
+    "IncompleteRead",
+    "TypedAttributeLookupError",
+    "WouldBlock",
+    "AsyncFile",
+    "Path",
+    "open_file",
+    "wrap_file",
+    "aclose_forcefully",
+    "open_signal_receiver",
+    "connect_tcp",
+    "connect_unix",
+    "create_tcp_listener",
+    "create_unix_listener",
+    "create_udp_socket",
+    "create_connected_udp_socket",
+    "getaddrinfo",
+    "getnameinfo",
+    "wait_socket_readable",
+    "wait_socket_writable",
+    "create_memory_object_stream",
+    "run_process",
+    "open_process",
+    "create_lock",
+    "CapacityLimiter",
+    "CapacityLimiterStatistics",
+    "Condition",
+    "ConditionStatistics",
+    "Event",
+    "EventStatistics",
+    "Lock",
+    "LockStatistics",
+    "Semaphore",
+    "SemaphoreStatistics",
+    "create_condition",
+    "create_event",
+    "create_semaphore",
+    "create_capacity_limiter",
+    "open_cancel_scope",
+    "fail_after",
+    "move_on_after",
+    "current_effective_deadline",
+    "TASK_STATUS_IGNORED",
+    "CancelScope",
+    "create_task_group",
+    "TaskInfo",
+    "get_current_task",
+    "get_running_tasks",
+    "wait_all_tasks_blocked",
+    "run_sync_in_worker_thread",
+    "run_async_from_thread",
+    "run_sync_from_thread",
+    "current_default_worker_thread_limiter",
+    "create_blocking_portal",
+    "start_blocking_portal",
+    "typed_attribute",
+    "TypedAttributeSet",
+    "TypedAttributeProvider",
+)
+
+from typing import Any
+
+from ._core._compat import maybe_async, maybe_async_cm
+from ._core._eventloop import (
+    current_time,
+    get_all_backends,
+    get_cancelled_exc_class,
+    run,
+    sleep,
+    sleep_forever,
+    sleep_until,
+)
+from ._core._exceptions import (
+    BrokenResourceError,
+    BrokenWorkerProcess,
+    BusyResourceError,
+    ClosedResourceError,
+    DelimiterNotFound,
+    EndOfStream,
+    ExceptionGroup,
+    IncompleteRead,
+    TypedAttributeLookupError,
+    WouldBlock,
+)
+from ._core._fileio import AsyncFile, Path, open_file, wrap_file
+from ._core._resources import aclose_forcefully
+from ._core._signals import open_signal_receiver
+from ._core._sockets import (
+    connect_tcp,
+    connect_unix,
+    create_connected_udp_socket,
+    create_tcp_listener,
+    create_udp_socket,
+    create_unix_listener,
+    getaddrinfo,
+    getnameinfo,
+    wait_socket_readable,
+    wait_socket_writable,
+)
+from ._core._streams import create_memory_object_stream
+from ._core._subprocesses import open_process, run_process
+from ._core._synchronization import (
+    CapacityLimiter,
+    CapacityLimiterStatistics,
+    Condition,
+    ConditionStatistics,
+    Event,
+    EventStatistics,
+    Lock,
+    LockStatistics,
+    Semaphore,
+    SemaphoreStatistics,
+    create_capacity_limiter,
+    create_condition,
+    create_event,
+    create_lock,
+    create_semaphore,
+)
+from ._core._tasks import (
+    TASK_STATUS_IGNORED,
+    CancelScope,
+    create_task_group,
+    current_effective_deadline,
+    fail_after,
+    move_on_after,
+    open_cancel_scope,
+)
+from ._core._testing import (
+    TaskInfo,
+    get_current_task,
+    get_running_tasks,
+    wait_all_tasks_blocked,
+)
+from ._core._typedattr import TypedAttributeProvider, TypedAttributeSet, typed_attribute
+
+# Re-exported here, for backwards compatibility
+# isort: off
+from .to_thread import current_default_worker_thread_limiter, run_sync_in_worker_thread
+from .from_thread import (
+    create_blocking_portal,
+    run_async_from_thread,
+    run_sync_from_thread,
+    start_blocking_portal,
+)
+
+# Re-export imports so they look like they live directly in this package
+key: str
+value: Any
+for key, value in list(locals().items()):
+    if getattr(value, "__module__", "").startswith("anyio."):
+        value.__module__ = __name__

Backend/venv/lib/python3.12/site-packages/anyio/_backends/_trio.py

@@ -0,0 +1,996 @@
+from __future__ import annotations
+
+import array
+import math
+import socket
+from concurrent.futures import Future
+from contextvars import copy_context
+from dataclasses import dataclass
+from functools import partial
+from io import IOBase
+from os import PathLike
+from signal import Signals
+from types import TracebackType
+from typing import (
+    IO,
+    TYPE_CHECKING,
+    Any,
+    AsyncGenerator,
+    AsyncIterator,
+    Awaitable,
+    Callable,
+    Collection,
+    Coroutine,
+    Generic,
+    Iterable,
+    Mapping,
+    NoReturn,
+    Sequence,
+    TypeVar,
+    cast,
+)
+
+import sniffio
+import trio.from_thread
+from outcome import Error, Outcome, Value
+from trio.socket import SocketType as TrioSocketType
+from trio.to_thread import run_sync
+
+from .. import CapacityLimiterStatistics, EventStatistics, TaskInfo, abc
+from .._core._compat import DeprecatedAsyncContextManager, DeprecatedAwaitable
+from .._core._eventloop import claim_worker_thread
+from .._core._exceptions import (
+    BrokenResourceError,
+    BusyResourceError,
+    ClosedResourceError,
+    EndOfStream,
+)
+from .._core._exceptions import ExceptionGroup as BaseExceptionGroup
+from .._core._sockets import convert_ipv6_sockaddr
+from .._core._synchronization import CapacityLimiter as BaseCapacityLimiter
+from .._core._synchronization import Event as BaseEvent
+from .._core._synchronization import ResourceGuard
+from .._core._tasks import CancelScope as BaseCancelScope
+from ..abc import IPSockAddrType, UDPPacketType
+
+if TYPE_CHECKING:
+    from trio_typing import TaskStatus
+
+try:
+    from trio import lowlevel as trio_lowlevel
+except ImportError:
+    from trio import hazmat as trio_lowlevel  # type: ignore[no-redef]
+    from trio.hazmat import wait_readable, wait_writable
+else:
+    from trio.lowlevel import wait_readable, wait_writable
+
+try:
+    trio_open_process = trio_lowlevel.open_process
+except AttributeError:
+    # isort: off
+    from trio import (  # type: ignore[attr-defined, no-redef]
+        open_process as trio_open_process,
+    )
+
+T_Retval = TypeVar("T_Retval")
+T_SockAddr = TypeVar("T_SockAddr", str, IPSockAddrType)
+
+
+#
+# Event loop
+#
+
+run = trio.run
+current_token = trio.lowlevel.current_trio_token
+RunVar = trio.lowlevel.RunVar
+
+
+#
+# Miscellaneous
+#
+
+sleep = trio.sleep
+
+
+#
+# Timeouts and cancellation
+#
+
+
+class CancelScope(BaseCancelScope):
+    def __new__(
+        cls, original: trio.CancelScope | None = None, **kwargs: object
+    ) -> CancelScope:
+        return object.__new__(cls)
+
+    def __init__(self, original: trio.CancelScope | None = None, **kwargs: Any) -> None:
+        self.__original = original or trio.CancelScope(**kwargs)
+
+    def __enter__(self) -> CancelScope:
+        self.__original.__enter__()
+        return self
+
+    def __exit__(
+        self,
+        exc_type: type[BaseException] | None,
+        exc_val: BaseException | None,
+        exc_tb: TracebackType | None,
+    ) -> bool | None:
+        # https://github.com/python-trio/trio-typing/pull/79
+        return self.__original.__exit__(  # type: ignore[func-returns-value]
+            exc_type, exc_val, exc_tb
+        )
+
+    def cancel(self) -> DeprecatedAwaitable:
+        self.__original.cancel()
+        return DeprecatedAwaitable(self.cancel)
+
+    @property
+    def deadline(self) -> float:
+        return self.__original.deadline
+
+    @deadline.setter
+    def deadline(self, value: float) -> None:
+        self.__original.deadline = value
+
+    @property
+    def cancel_called(self) -> bool:
+        return self.__original.cancel_called
+
+    @property
+    def shield(self) -> bool:
+        return self.__original.shield
+
+    @shield.setter
+    def shield(self, value: bool) -> None:
+        self.__original.shield = value
+
+
+CancelledError = trio.Cancelled
+checkpoint = trio.lowlevel.checkpoint
+checkpoint_if_cancelled = trio.lowlevel.checkpoint_if_cancelled
+cancel_shielded_checkpoint = trio.lowlevel.cancel_shielded_checkpoint
+current_effective_deadline = trio.current_effective_deadline
+current_time = trio.current_time
+
+
+#
+# Task groups
+#
+
+
+class ExceptionGroup(BaseExceptionGroup, trio.MultiError):
+    pass
+
+
+class TaskGroup(abc.TaskGroup):
+    def __init__(self) -> None:
+        self._active = False
+        self._nursery_manager = trio.open_nursery()
+        self.cancel_scope = None  # type: ignore[assignment]
+
+    async def __aenter__(self) -> TaskGroup:
+        self._active = True
+        self._nursery = await self._nursery_manager.__aenter__()
+        self.cancel_scope = CancelScope(self._nursery.cancel_scope)
+        return self
+
+    async def __aexit__(
+        self,
+        exc_type: type[BaseException] | None,
+        exc_val: BaseException | None,
+        exc_tb: TracebackType | None,
+    ) -> bool | None:
+        try:
+            return await self._nursery_manager.__aexit__(exc_type, exc_val, exc_tb)
+        except trio.MultiError as exc:
+            raise ExceptionGroup(exc.exceptions) from None
+        finally:
+            self._active = False
+
+    def start_soon(
+        self, func: Callable[..., Awaitable[Any]], *args: object, name: object = None
+    ) -> None:
+        if not self._active:
+            raise RuntimeError(
+                "This task group is not active; no new tasks can be started."
+            )
+
+        self._nursery.start_soon(func, *args, name=name)
+
+    async def start(
+        self, func: Callable[..., Awaitable[Any]], *args: object, name: object = None
+    ) -> object:
+        if not self._active:
+            raise RuntimeError(
+                "This task group is not active; no new tasks can be started."
+            )
+
+        return await self._nursery.start(func, *args, name=name)
+
+
+#
+# Threads
+#
+
+
+async def run_sync_in_worker_thread(
+    func: Callable[..., T_Retval],
+    *args: object,
+    cancellable: bool = False,
+    limiter: trio.CapacityLimiter | None = None,
+) -> T_Retval:
+    def wrapper() -> T_Retval:
+        with claim_worker_thread("trio"):
+            return func(*args)
+
+    # TODO: remove explicit context copying when trio 0.20 is the minimum requirement
+    context = copy_context()
+    context.run(sniffio.current_async_library_cvar.set, None)
+    return await run_sync(
+        context.run, wrapper, cancellable=cancellable, limiter=limiter
+    )
+
+
+# TODO: remove this workaround when trio 0.20 is the minimum requirement
+def run_async_from_thread(
+    fn: Callable[..., Awaitable[T_Retval]], *args: Any
+) -> T_Retval:
+    async def wrapper() -> T_Retval:
+        retval: T_Retval
+
+        async def inner() -> None:
+            nonlocal retval
+            __tracebackhide__ = True
+            retval = await fn(*args)
+
+        async with trio.open_nursery() as n:
+            context.run(n.start_soon, inner)
+
+        __tracebackhide__ = True
+        return retval  # noqa: F821
+
+    context = copy_context()
+    context.run(sniffio.current_async_library_cvar.set, "trio")
+    return trio.from_thread.run(wrapper)
+
+
+def run_sync_from_thread(fn: Callable[..., T_Retval], *args: Any) -> T_Retval:
+    # TODO: remove explicit context copying when trio 0.20 is the minimum requirement
+    retval = trio.from_thread.run_sync(copy_context().run, fn, *args)
+    return cast(T_Retval, retval)
+
+
+class BlockingPortal(abc.BlockingPortal):
+    def __new__(cls) -> BlockingPortal:
+        return object.__new__(cls)
+
+    def __init__(self) -> None:
+        super().__init__()
+        self._token = trio.lowlevel.current_trio_token()
+
+    def _spawn_task_from_thread(
+        self,
+        func: Callable,
+        args: tuple,
+        kwargs: dict[str, Any],
+        name: object,
+        future: Future,
+    ) -> None:
+        context = copy_context()
+        context.run(sniffio.current_async_library_cvar.set, "trio")
+        trio.from_thread.run_sync(
+            context.run,
+            partial(self._task_group.start_soon, name=name),
+            self._call_func,
+            func,
+            args,
+            kwargs,
+            future,
+            trio_token=self._token,
+        )
+
+
+#
+# Subprocesses
+#
+
+
+@dataclass(eq=False)
+class ReceiveStreamWrapper(abc.ByteReceiveStream):
+    _stream: trio.abc.ReceiveStream
+
+    async def receive(self, max_bytes: int | None = None) -> bytes:
+        try:
+            data = await self._stream.receive_some(max_bytes)
+        except trio.ClosedResourceError as exc:
+            raise ClosedResourceError from exc.__cause__
+        except trio.BrokenResourceError as exc:
+            raise BrokenResourceError from exc.__cause__
+
+        if data:
+            return data
+        else:
+            raise EndOfStream
+
+    async def aclose(self) -> None:
+        await self._stream.aclose()
+
+
+@dataclass(eq=False)
+class SendStreamWrapper(abc.ByteSendStream):
+    _stream: trio.abc.SendStream
+
+    async def send(self, item: bytes) -> None:
+        try:
+            await self._stream.send_all(item)
+        except trio.ClosedResourceError as exc:
+            raise ClosedResourceError from exc.__cause__
+        except trio.BrokenResourceError as exc:
+            raise BrokenResourceError from exc.__cause__
+
+    async def aclose(self) -> None:
+        await self._stream.aclose()
+
+
+@dataclass(eq=False)
+class Process(abc.Process):
+    _process: trio.Process
+    _stdin: abc.ByteSendStream | None
+    _stdout: abc.ByteReceiveStream | None
+    _stderr: abc.ByteReceiveStream | None
+
+    async def aclose(self) -> None:
+        if self._stdin:
+            await self._stdin.aclose()
+        if self._stdout:
+            await self._stdout.aclose()
+        if self._stderr:
+            await self._stderr.aclose()
+
+        await self.wait()
+
+    async def wait(self) -> int:
+        return await self._process.wait()
+
+    def terminate(self) -> None:
+        self._process.terminate()
+
+    def kill(self) -> None:
+        self._process.kill()
+
+    def send_signal(self, signal: Signals) -> None:
+        self._process.send_signal(signal)
+
+    @property
+    def pid(self) -> int:
+        return self._process.pid
+
+    @property
+    def returncode(self) -> int | None:
+        return self._process.returncode
+
+    @property
+    def stdin(self) -> abc.ByteSendStream | None:
+        return self._stdin
+
+    @property
+    def stdout(self) -> abc.ByteReceiveStream | None:
+        return self._stdout
+
+    @property
+    def stderr(self) -> abc.ByteReceiveStream | None:
+        return self._stderr
+
+
+async def open_process(
+    command: str | bytes | Sequence[str | bytes],
+    *,
+    shell: bool,
+    stdin: int | IO[Any] | None,
+    stdout: int | IO[Any] | None,
+    stderr: int | IO[Any] | None,
+    cwd: str | bytes | PathLike | None = None,
+    env: Mapping[str, str] | None = None,
+    start_new_session: bool = False,
+) -> Process:
+    process = await trio_open_process(  # type: ignore[misc]
+        command,  # type: ignore[arg-type]
+        stdin=stdin,
+        stdout=stdout,
+        stderr=stderr,
+        shell=shell,
+        cwd=cwd,
+        env=env,
+        start_new_session=start_new_session,
+    )
+    stdin_stream = SendStreamWrapper(process.stdin) if process.stdin else None
+    stdout_stream = ReceiveStreamWrapper(process.stdout) if process.stdout else None
+    stderr_stream = ReceiveStreamWrapper(process.stderr) if process.stderr else None
+    return Process(process, stdin_stream, stdout_stream, stderr_stream)
+
+
+class _ProcessPoolShutdownInstrument(trio.abc.Instrument):
+    def after_run(self) -> None:
+        super().after_run()
+
+
+current_default_worker_process_limiter: RunVar = RunVar(
+    "current_default_worker_process_limiter"
+)
+
+
+async def _shutdown_process_pool(workers: set[Process]) -> None:
+    process: Process
+    try:
+        await sleep(math.inf)
+    except trio.Cancelled:
+        for process in workers:
+            if process.returncode is None:
+                process.kill()
+
+        with CancelScope(shield=True):
+            for process in workers:
+                await process.aclose()
+
+
+def setup_process_pool_exit_at_shutdown(workers: set[Process]) -> None:
+    trio.lowlevel.spawn_system_task(_shutdown_process_pool, workers)
+
+
+#
+# Sockets and networking
+#
+
+
+class _TrioSocketMixin(Generic[T_SockAddr]):
+    def __init__(self, trio_socket: TrioSocketType) -> None:
+        self._trio_socket = trio_socket
+        self._closed = False
+
+    def _check_closed(self) -> None:
+        if self._closed:
+            raise ClosedResourceError
+        if self._trio_socket.fileno() < 0:
+            raise BrokenResourceError
+
+    @property
+    def _raw_socket(self) -> socket.socket:
+        return self._trio_socket._sock  # type: ignore[attr-defined]
+
+    async def aclose(self) -> None:
+        if self._trio_socket.fileno() >= 0:
+            self._closed = True
+            self._trio_socket.close()
+
+    def _convert_socket_error(self, exc: BaseException) -> NoReturn:
+        if isinstance(exc, trio.ClosedResourceError):
+            raise ClosedResourceError from exc
+        elif self._trio_socket.fileno() < 0 and self._closed:
+            raise ClosedResourceError from None
+        elif isinstance(exc, OSError):
+            raise BrokenResourceError from exc
+        else:
+            raise exc
+
+
+class SocketStream(_TrioSocketMixin, abc.SocketStream):
+    def __init__(self, trio_socket: TrioSocketType) -> None:
+        super().__init__(trio_socket)
+        self._receive_guard = ResourceGuard("reading from")
+        self._send_guard = ResourceGuard("writing to")
+
+    async def receive(self, max_bytes: int = 65536) -> bytes:
+        with self._receive_guard:
+            try:
+                data = await self._trio_socket.recv(max_bytes)
+            except BaseException as exc:
+                self._convert_socket_error(exc)
+
+            if data:
+                return data
+            else:
+                raise EndOfStream
+
+    async def send(self, item: bytes) -> None:
+        with self._send_guard:
+            view = memoryview(item)
+            while view:
+                try:
+                    bytes_sent = await self._trio_socket.send(view)
+                except BaseException as exc:
+                    self._convert_socket_error(exc)
+
+                view = view[bytes_sent:]
+
+    async def send_eof(self) -> None:
+        self._trio_socket.shutdown(socket.SHUT_WR)
+
+
+class UNIXSocketStream(SocketStream, abc.UNIXSocketStream):
+    async def receive_fds(self, msglen: int, maxfds: int) -> tuple[bytes, list[int]]:
+        if not isinstance(msglen, int) or msglen < 0:
+            raise ValueError("msglen must be a non-negative integer")
+        if not isinstance(maxfds, int) or maxfds < 1:
+            raise ValueError("maxfds must be a positive integer")
+
+        fds = array.array("i")
+        await checkpoint()
+        with self._receive_guard:
+            while True:
+                try:
+                    message, ancdata, flags, addr = await self._trio_socket.recvmsg(
+                        msglen, socket.CMSG_LEN(maxfds * fds.itemsize)
+                    )
+                except BaseException as exc:
+                    self._convert_socket_error(exc)
+                else:
+                    if not message and not ancdata:
+                        raise EndOfStream
+
+                    break
+
+        for cmsg_level, cmsg_type, cmsg_data in ancdata:
+            if cmsg_level != socket.SOL_SOCKET or cmsg_type != socket.SCM_RIGHTS:
+                raise RuntimeError(
+                    f"Received unexpected ancillary data; message = {message!r}, "
+                    f"cmsg_level = {cmsg_level}, cmsg_type = {cmsg_type}"
+                )
+
+            fds.frombytes(cmsg_data[: len(cmsg_data) - (len(cmsg_data) % fds.itemsize)])
+
+        return message, list(fds)
+
+    async def send_fds(self, message: bytes, fds: Collection[int | IOBase]) -> None:
+        if not message:
+            raise ValueError("message must not be empty")
+        if not fds:
+            raise ValueError("fds must not be empty")
+
+        filenos: list[int] = []
+        for fd in fds:
+            if isinstance(fd, int):
+                filenos.append(fd)
+            elif isinstance(fd, IOBase):
+                filenos.append(fd.fileno())
+
+        fdarray = array.array("i", filenos)
+        await checkpoint()
+        with self._send_guard:
+            while True:
+                try:
+                    await self._trio_socket.sendmsg(
+                        [message],
+                        [
+                            (
+                                socket.SOL_SOCKET,
+                                socket.SCM_RIGHTS,  # type: ignore[list-item]
+                                fdarray,
+                            )
+                        ],
+                    )
+                    break
+                except BaseException as exc:
+                    self._convert_socket_error(exc)
+
+
+class TCPSocketListener(_TrioSocketMixin, abc.SocketListener):
+    def __init__(self, raw_socket: socket.socket):
+        super().__init__(trio.socket.from_stdlib_socket(raw_socket))
+        self._accept_guard = ResourceGuard("accepting connections from")
+
+    async def accept(self) -> SocketStream:
+        with self._accept_guard:
+            try:
+                trio_socket, _addr = await self._trio_socket.accept()
+            except BaseException as exc:
+                self._convert_socket_error(exc)
+
+        trio_socket.setsockopt(socket.IPPROTO_TCP, socket.TCP_NODELAY, 1)
+        return SocketStream(trio_socket)
+
+
+class UNIXSocketListener(_TrioSocketMixin, abc.SocketListener):
+    def __init__(self, raw_socket: socket.socket):
+        super().__init__(trio.socket.from_stdlib_socket(raw_socket))
+        self._accept_guard = ResourceGuard("accepting connections from")
+
+    async def accept(self) -> UNIXSocketStream:
+        with self._accept_guard:
+            try:
+                trio_socket, _addr = await self._trio_socket.accept()
+            except BaseException as exc:
+                self._convert_socket_error(exc)
+
+        return UNIXSocketStream(trio_socket)
+
+
+class UDPSocket(_TrioSocketMixin[IPSockAddrType], abc.UDPSocket):
+    def __init__(self, trio_socket: TrioSocketType) -> None:
+        super().__init__(trio_socket)
+        self._receive_guard = ResourceGuard("reading from")
+        self._send_guard = ResourceGuard("writing to")
+
+    async def receive(self) -> tuple[bytes, IPSockAddrType]:
+        with self._receive_guard:
+            try:
+                data, addr = await self._trio_socket.recvfrom(65536)
+                return data, convert_ipv6_sockaddr(addr)
+            except BaseException as exc:
+                self._convert_socket_error(exc)
+
+    async def send(self, item: UDPPacketType) -> None:
+        with self._send_guard:
+            try:
+                await self._trio_socket.sendto(*item)
+            except BaseException as exc:
+                self._convert_socket_error(exc)
+
+
+class ConnectedUDPSocket(_TrioSocketMixin[IPSockAddrType], abc.ConnectedUDPSocket):
+    def __init__(self, trio_socket: TrioSocketType) -> None:
+        super().__init__(trio_socket)
+        self._receive_guard = ResourceGuard("reading from")
+        self._send_guard = ResourceGuard("writing to")
+
+    async def receive(self) -> bytes:
+        with self._receive_guard:
+            try:
+                return await self._trio_socket.recv(65536)
+            except BaseException as exc:
+                self._convert_socket_error(exc)
+
+    async def send(self, item: bytes) -> None:
+        with self._send_guard:
+            try:
+                await self._trio_socket.send(item)
+            except BaseException as exc:
+                self._convert_socket_error(exc)
+
+
+async def connect_tcp(
+    host: str, port: int, local_address: IPSockAddrType | None = None
+) -> SocketStream:
+    family = socket.AF_INET6 if ":" in host else socket.AF_INET
+    trio_socket = trio.socket.socket(family)
+    trio_socket.setsockopt(socket.IPPROTO_TCP, socket.TCP_NODELAY, 1)
+    if local_address:
+        await trio_socket.bind(local_address)
+
+    try:
+        await trio_socket.connect((host, port))
+    except BaseException:
+        trio_socket.close()
+        raise
+
+    return SocketStream(trio_socket)
+
+
+async def connect_unix(path: str) -> UNIXSocketStream:
+    trio_socket = trio.socket.socket(socket.AF_UNIX)
+    try:
+        await trio_socket.connect(path)
+    except BaseException:
+        trio_socket.close()
+        raise
+
+    return UNIXSocketStream(trio_socket)
+
+
+async def create_udp_socket(
+    family: socket.AddressFamily,
+    local_address: IPSockAddrType | None,
+    remote_address: IPSockAddrType | None,
+    reuse_port: bool,
+) -> UDPSocket | ConnectedUDPSocket:
+    trio_socket = trio.socket.socket(family=family, type=socket.SOCK_DGRAM)
+
+    if reuse_port:
+        trio_socket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEPORT, 1)
+
+    if local_address:
+        await trio_socket.bind(local_address)
+
+    if remote_address:
+        await trio_socket.connect(remote_address)
+        return ConnectedUDPSocket(trio_socket)
+    else:
+        return UDPSocket(trio_socket)
+
+
+getaddrinfo = trio.socket.getaddrinfo
+getnameinfo = trio.socket.getnameinfo
+
+
+async def wait_socket_readable(sock: socket.socket) -> None:
+    try:
+        await wait_readable(sock)
+    except trio.ClosedResourceError as exc:
+        raise ClosedResourceError().with_traceback(exc.__traceback__) from None
+    except trio.BusyResourceError:
+        raise BusyResourceError("reading from") from None
+
+
+async def wait_socket_writable(sock: socket.socket) -> None:
+    try:
+        await wait_writable(sock)
+    except trio.ClosedResourceError as exc:
+        raise ClosedResourceError().with_traceback(exc.__traceback__) from None
+    except trio.BusyResourceError:
+        raise BusyResourceError("writing to") from None
+
+
+#
+# Synchronization
+#
+
+
+class Event(BaseEvent):
+    def __new__(cls) -> Event:
+        return object.__new__(cls)
+
+    def __init__(self) -> None:
+        self.__original = trio.Event()
+
+    def is_set(self) -> bool:
+        return self.__original.is_set()
+
+    async def wait(self) -> None:
+        return await self.__original.wait()
+
+    def statistics(self) -> EventStatistics:
+        orig_statistics = self.__original.statistics()
+        return EventStatistics(tasks_waiting=orig_statistics.tasks_waiting)
+
+    def set(self) -> DeprecatedAwaitable:
+        self.__original.set()
+        return DeprecatedAwaitable(self.set)
+
+
+class CapacityLimiter(BaseCapacityLimiter):
+    def __new__(cls, *args: object, **kwargs: object) -> CapacityLimiter:
+        return object.__new__(cls)
+
+    def __init__(
+        self, *args: Any, original: trio.CapacityLimiter | None = None
+    ) -> None:
+        self.__original = original or trio.CapacityLimiter(*args)
+
+    async def __aenter__(self) -> None:
+        return await self.__original.__aenter__()
+
+    async def __aexit__(
+        self,
+        exc_type: type[BaseException] | None,
+        exc_val: BaseException | None,
+        exc_tb: TracebackType | None,
+    ) -> None:
+        await self.__original.__aexit__(exc_type, exc_val, exc_tb)
+
+    @property
+    def total_tokens(self) -> float:
+        return self.__original.total_tokens
+
+    @total_tokens.setter
+    def total_tokens(self, value: float) -> None:
+        self.__original.total_tokens = value
+
+    @property
+    def borrowed_tokens(self) -> int:
+        return self.__original.borrowed_tokens
+
+    @property
+    def available_tokens(self) -> float:
+        return self.__original.available_tokens
+
+    def acquire_nowait(self) -> DeprecatedAwaitable:
+        self.__original.acquire_nowait()
+        return DeprecatedAwaitable(self.acquire_nowait)
+
+    def acquire_on_behalf_of_nowait(self, borrower: object) -> DeprecatedAwaitable:
+        self.__original.acquire_on_behalf_of_nowait(borrower)
+        return DeprecatedAwaitable(self.acquire_on_behalf_of_nowait)
+
+    async def acquire(self) -> None:
+        await self.__original.acquire()
+
+    async def acquire_on_behalf_of(self, borrower: object) -> None:
+        await self.__original.acquire_on_behalf_of(borrower)
+
+    def release(self) -> None:
+        return self.__original.release()
+
+    def release_on_behalf_of(self, borrower: object) -> None:
+        return self.__original.release_on_behalf_of(borrower)
+
+    def statistics(self) -> CapacityLimiterStatistics:
+        orig = self.__original.statistics()
+        return CapacityLimiterStatistics(
+            borrowed_tokens=orig.borrowed_tokens,
+            total_tokens=orig.total_tokens,
+            borrowers=orig.borrowers,
+            tasks_waiting=orig.tasks_waiting,
+        )
+
+
+_capacity_limiter_wrapper: RunVar = RunVar("_capacity_limiter_wrapper")
+
+
+def current_default_thread_limiter() -> CapacityLimiter:
+    try:
+        return _capacity_limiter_wrapper.get()
+    except LookupError:
+        limiter = CapacityLimiter(
+            original=trio.to_thread.current_default_thread_limiter()
+        )
+        _capacity_limiter_wrapper.set(limiter)
+        return limiter
+
+
+#
+# Signal handling
+#
+
+
+class _SignalReceiver(DeprecatedAsyncContextManager["_SignalReceiver"]):
+    _iterator: AsyncIterator[int]
+
+    def __init__(self, signals: tuple[Signals, ...]):
+        self._signals = signals
+
+    def __enter__(self) -> _SignalReceiver:
+        self._cm = trio.open_signal_receiver(*self._signals)
+        self._iterator = self._cm.__enter__()
+        return self
+
+    def __exit__(
+        self,
+        exc_type: type[BaseException] | None,
+        exc_val: BaseException | None,
+        exc_tb: TracebackType | None,
+    ) -> bool | None:
+        return self._cm.__exit__(exc_type, exc_val, exc_tb)
+
+    def __aiter__(self) -> _SignalReceiver:
+        return self
+
+    async def __anext__(self) -> Signals:
+        signum = await self._iterator.__anext__()
+        return Signals(signum)
+
+
+def open_signal_receiver(*signals: Signals) -> _SignalReceiver:
+    return _SignalReceiver(signals)
+
+
+#
+# Testing and debugging
+#
+
+
+def get_current_task() -> TaskInfo:
+    task = trio_lowlevel.current_task()
+
+    parent_id = None
+    if task.parent_nursery and task.parent_nursery.parent_task:
+        parent_id = id(task.parent_nursery.parent_task)
+
+    return TaskInfo(id(task), parent_id, task.name, task.coro)
+
+
+def get_running_tasks() -> list[TaskInfo]:
+    root_task = trio_lowlevel.current_root_task()
+    task_infos = [TaskInfo(id(root_task), None, root_task.name, root_task.coro)]
+    nurseries = root_task.child_nurseries
+    while nurseries:
+        new_nurseries: list[trio.Nursery] = []
+        for nursery in nurseries:
+            for task in nursery.child_tasks:
+                task_infos.append(
+                    TaskInfo(id(task), id(nursery.parent_task), task.name, task.coro)
+                )
+                new_nurseries.extend(task.child_nurseries)
+
+        nurseries = new_nurseries
+
+    return task_infos
+
+
+def wait_all_tasks_blocked() -> Awaitable[None]:
+    import trio.testing
+
+    return trio.testing.wait_all_tasks_blocked()
+
+
+class TestRunner(abc.TestRunner):
+    def __init__(self, **options: Any) -> None:
+        from collections import deque
+        from queue import Queue
+
+        self._call_queue: Queue[Callable[..., object]] = Queue()
+        self._result_queue: deque[Outcome] = deque()
+        self._stop_event: trio.Event | None = None
+        self._nursery: trio.Nursery | None = None
+        self._options = options
+
+    async def _trio_main(self) -> None:
+        self._stop_event = trio.Event()
+        async with trio.open_nursery() as self._nursery:
+            await self._stop_event.wait()
+
+    async def _call_func(
+        self, func: Callable[..., Awaitable[object]], args: tuple, kwargs: dict
+    ) -> None:
+        try:
+            retval = await func(*args, **kwargs)
+        except BaseException as exc:
+            self._result_queue.append(Error(exc))
+        else:
+            self._result_queue.append(Value(retval))
+
+    def _main_task_finished(self, outcome: object) -> None:
+        self._nursery = None
+
+    def _get_nursery(self) -> trio.Nursery:
+        if self._nursery is None:
+            trio.lowlevel.start_guest_run(
+                self._trio_main,
+                run_sync_soon_threadsafe=self._call_queue.put,
+                done_callback=self._main_task_finished,
+                **self._options,
+            )
+            while self._nursery is None:
+                self._call_queue.get()()
+
+        return self._nursery
+
+    def _call(
+        self, func: Callable[..., Awaitable[T_Retval]], *args: object, **kwargs: object
+    ) -> T_Retval:
+        self._get_nursery().start_soon(self._call_func, func, args, kwargs)
+        while not self._result_queue:
+            self._call_queue.get()()
+
+        outcome = self._result_queue.pop()
+        return outcome.unwrap()
+
+    def close(self) -> None:
+        if self._stop_event:
+            self._stop_event.set()
+            while self._nursery is not None:
+                self._call_queue.get()()
+
+    def run_asyncgen_fixture(
+        self,
+        fixture_func: Callable[..., AsyncGenerator[T_Retval, Any]],
+        kwargs: dict[str, Any],
+    ) -> Iterable[T_Retval]:
+        async def fixture_runner(*, task_status: TaskStatus[T_Retval]) -> None:
+            agen = fixture_func(**kwargs)
+            retval = await agen.asend(None)
+            task_status.started(retval)
+            await teardown_event.wait()
+            try:
+                await agen.asend(None)
+            except StopAsyncIteration:
+                pass
+            else:
+                await agen.aclose()
+                raise RuntimeError("Async generator fixture did not stop")
+
+        teardown_event = trio.Event()
+        fixture_value = self._call(lambda: self._get_nursery().start(fixture_runner))
+        yield fixture_value
+        teardown_event.set()
+
+    def run_fixture(
+        self,
+        fixture_func: Callable[..., Coroutine[Any, Any, T_Retval]],
+        kwargs: dict[str, Any],
+    ) -> T_Retval:
+        return self._call(fixture_func, **kwargs)
+
+    def run_test(
+        self, test_func: Callable[..., Coroutine[Any, Any, Any]], kwargs: dict[str, Any]
+    ) -> None:
+        self._call(test_func, **kwargs)

Backend/venv/lib/python3.12/site-packages/anyio/_core/_compat.py

@@ -0,0 +1,217 @@
+from __future__ import annotations
+
+from abc import ABCMeta, abstractmethod
+from contextlib import AbstractContextManager
+from types import TracebackType
+from typing import (
+    TYPE_CHECKING,
+    Any,
+    AsyncContextManager,
+    Callable,
+    ContextManager,
+    Generator,
+    Generic,
+    Iterable,
+    List,
+    TypeVar,
+    Union,
+    overload,
+)
+from warnings import warn
+
+if TYPE_CHECKING:
+    from ._testing import TaskInfo
+else:
+    TaskInfo = object
+
+T = TypeVar("T")
+AnyDeprecatedAwaitable = Union[
+    "DeprecatedAwaitable",
+    "DeprecatedAwaitableFloat",
+    "DeprecatedAwaitableList[T]",
+    TaskInfo,
+]
+
+
+@overload
+async def maybe_async(__obj: TaskInfo) -> TaskInfo:
+    ...
+
+
+@overload
+async def maybe_async(__obj: DeprecatedAwaitableFloat) -> float:
+    ...
+
+
+@overload
+async def maybe_async(__obj: DeprecatedAwaitableList[T]) -> list[T]:
+    ...
+
+
+@overload
+async def maybe_async(__obj: DeprecatedAwaitable) -> None:
+    ...
+
+
+async def maybe_async(
+    __obj: AnyDeprecatedAwaitable[T],
+) -> TaskInfo | float | list[T] | None:
+    """
+    Await on the given object if necessary.
+
+    This function is intended to bridge the gap between AnyIO 2.x and 3.x where some functions and
+    methods were converted from coroutine functions into regular functions.
+
+    Do **not** try to use this for any other purpose!
+
+    :return: the result of awaiting on the object if coroutine, or the object itself otherwise
+
+    .. versionadded:: 2.2
+
+    """
+    return __obj._unwrap()
+
+
+class _ContextManagerWrapper:
+    def __init__(self, cm: ContextManager[T]):
+        self._cm = cm
+
+    async def __aenter__(self) -> T:
+        return self._cm.__enter__()
+
+    async def __aexit__(
+        self,
+        exc_type: type[BaseException] | None,
+        exc_val: BaseException | None,
+        exc_tb: TracebackType | None,
+    ) -> bool | None:
+        return self._cm.__exit__(exc_type, exc_val, exc_tb)
+
+
+def maybe_async_cm(
+    cm: ContextManager[T] | AsyncContextManager[T],
+) -> AsyncContextManager[T]:
+    """
+    Wrap a regular context manager as an async one if necessary.
+
+    This function is intended to bridge the gap between AnyIO 2.x and 3.x where some functions and
+    methods were changed to return regular context managers instead of async ones.
+
+    :param cm: a regular or async context manager
+    :return: an async context manager
+
+    .. versionadded:: 2.2
+
+    """
+    if not isinstance(cm, AbstractContextManager):
+        raise TypeError("Given object is not an context manager")
+
+    return _ContextManagerWrapper(cm)
+
+
+def _warn_deprecation(
+    awaitable: AnyDeprecatedAwaitable[Any], stacklevel: int = 1
+) -> None:
+    warn(
+        f'Awaiting on {awaitable._name}() is deprecated. Use "await '
+        f"anyio.maybe_async({awaitable._name}(...)) if you have to support both AnyIO 2.x "
+        f'and 3.x, or just remove the "await" if you are completely migrating to AnyIO 3+.',
+        DeprecationWarning,
+        stacklevel=stacklevel + 1,
+    )
+
+
+class DeprecatedAwaitable:
+    def __init__(self, func: Callable[..., DeprecatedAwaitable]):
+        self._name = f"{func.__module__}.{func.__qualname__}"
+
+    def __await__(self) -> Generator[None, None, None]:
+        _warn_deprecation(self)
+        if False:
+            yield
+
+    def __reduce__(self) -> tuple[type[None], tuple[()]]:
+        return type(None), ()
+
+    def _unwrap(self) -> None:
+        return None
+
+
+class DeprecatedAwaitableFloat(float):
+    def __new__(
+        cls, x: float, func: Callable[..., DeprecatedAwaitableFloat]
+    ) -> DeprecatedAwaitableFloat:
+        return super().__new__(cls, x)
+
+    def __init__(self, x: float, func: Callable[..., DeprecatedAwaitableFloat]):
+        self._name = f"{func.__module__}.{func.__qualname__}"
+
+    def __await__(self) -> Generator[None, None, float]:
+        _warn_deprecation(self)
+        if False:
+            yield
+
+        return float(self)
+
+    def __reduce__(self) -> tuple[type[float], tuple[float]]:
+        return float, (float(self),)
+
+    def _unwrap(self) -> float:
+        return float(self)
+
+
+class DeprecatedAwaitableList(List[T]):
+    def __init__(
+        self,
+        iterable: Iterable[T] = (),
+        *,
+        func: Callable[..., DeprecatedAwaitableList[T]],
+    ):
+        super().__init__(iterable)
+        self._name = f"{func.__module__}.{func.__qualname__}"
+
+    def __await__(self) -> Generator[None, None, list[T]]:
+        _warn_deprecation(self)
+        if False:
+            yield
+
+        return list(self)
+
+    def __reduce__(self) -> tuple[type[list[T]], tuple[list[T]]]:
+        return list, (list(self),)
+
+    def _unwrap(self) -> list[T]:
+        return list(self)
+
+
+class DeprecatedAsyncContextManager(Generic[T], metaclass=ABCMeta):
+    @abstractmethod
+    def __enter__(self) -> T:
+        pass
+
+    @abstractmethod
+    def __exit__(
+        self,
+        exc_type: type[BaseException] | None,
+        exc_val: BaseException | None,
+        exc_tb: TracebackType | None,
+    ) -> bool | None:
+        pass
+
+    async def __aenter__(self) -> T:
+        warn(
+            f"Using {self.__class__.__name__} as an async context manager has been deprecated. "
+            f'Use "async with anyio.maybe_async_cm(yourcontextmanager) as foo:" if you have to '
+            f'support both AnyIO 2.x and 3.x, or just remove the "async" from "async with" if '
+            f"you are completely migrating to AnyIO 3+.",
+            DeprecationWarning,
+        )
+        return self.__enter__()
+
+    async def __aexit__(
+        self,
+        exc_type: type[BaseException] | None,
+        exc_val: BaseException | None,
+        exc_tb: TracebackType | None,
+    ) -> bool | None:
+        return self.__exit__(exc_type, exc_val, exc_tb)

Backend/venv/lib/python3.12/site-packages/anyio/_core/_eventloop.py

@@ -0,0 +1,153 @@
+from __future__ import annotations
+
+import math
+import sys
+import threading
+from contextlib import contextmanager
+from importlib import import_module
+from typing import (
+    Any,
+    Awaitable,
+    Callable,
+    Generator,
+    TypeVar,
+)
+
+import sniffio
+
+# This must be updated when new backends are introduced
+from ._compat import DeprecatedAwaitableFloat
+
+BACKENDS = "asyncio", "trio"
+
+T_Retval = TypeVar("T_Retval")
+threadlocals = threading.local()
+
+
+def run(
+    func: Callable[..., Awaitable[T_Retval]],
+    *args: object,
+    backend: str = "asyncio",
+    backend_options: dict[str, Any] | None = None,
+) -> T_Retval:
+    """
+    Run the given coroutine function in an asynchronous event loop.
+
+    The current thread must not be already running an event loop.
+
+    :param func: a coroutine function
+    :param args: positional arguments to ``func``
+    :param backend: name of the asynchronous event loop implementation – currently either
+        ``asyncio`` or ``trio``
+    :param backend_options: keyword arguments to call the backend ``run()`` implementation with
+        (documented :ref:`here <backend options>`)
+    :return: the return value of the coroutine function
+    :raises RuntimeError: if an asynchronous event loop is already running in this thread
+    :raises LookupError: if the named backend is not found
+
+    """
+    try:
+        asynclib_name = sniffio.current_async_library()
+    except sniffio.AsyncLibraryNotFoundError:
+        pass
+    else:
+        raise RuntimeError(f"Already running {asynclib_name} in this thread")
+
+    try:
+        asynclib = import_module(f"..._backends._{backend}", package=__name__)
+    except ImportError as exc:
+        raise LookupError(f"No such backend: {backend}") from exc
+
+    token = None
+    if sniffio.current_async_library_cvar.get(None) is None:
+        # Since we're in control of the event loop, we can cache the name of the async library
+        token = sniffio.current_async_library_cvar.set(backend)
+
+    try:
+        backend_options = backend_options or {}
+        return asynclib.run(func, *args, **backend_options)
+    finally:
+        if token:
+            sniffio.current_async_library_cvar.reset(token)
+
+
+async def sleep(delay: float) -> None:
+    """
+    Pause the current task for the specified duration.
+
+    :param delay: the duration, in seconds
+
+    """
+    return await get_asynclib().sleep(delay)
+
+
+async def sleep_forever() -> None:
+    """
+    Pause the current task until it's cancelled.
+
+    This is a shortcut for ``sleep(math.inf)``.
+
+    .. versionadded:: 3.1
+
+    """
+    await sleep(math.inf)
+
+
+async def sleep_until(deadline: float) -> None:
+    """
+    Pause the current task until the given time.
+
+    :param deadline: the absolute time to wake up at (according to the internal monotonic clock of
+        the event loop)
+
+    .. versionadded:: 3.1
+
+    """
+    now = current_time()
+    await sleep(max(deadline - now, 0))
+
+
+def current_time() -> DeprecatedAwaitableFloat:
+    """
+    Return the current value of the event loop's internal clock.
+
+    :return: the clock value (seconds)
+
+    """
+    return DeprecatedAwaitableFloat(get_asynclib().current_time(), current_time)
+
+
+def get_all_backends() -> tuple[str, ...]:
+    """Return a tuple of the names of all built-in backends."""
+    return BACKENDS
+
+
+def get_cancelled_exc_class() -> type[BaseException]:
+    """Return the current async library's cancellation exception class."""
+    return get_asynclib().CancelledError
+
+
+#
+# Private API
+#
+
+
+@contextmanager
+def claim_worker_thread(backend: str) -> Generator[Any, None, None]:
+    module = sys.modules["anyio._backends._" + backend]
+    threadlocals.current_async_module = module
+    try:
+        yield
+    finally:
+        del threadlocals.current_async_module
+
+
+def get_asynclib(asynclib_name: str | None = None) -> Any:
+    if asynclib_name is None:
+        asynclib_name = sniffio.current_async_library()
+
+    modulename = "anyio._backends._" + asynclib_name
+    try:
+        return sys.modules[modulename]
+    except KeyError:
+        return import_module(modulename)

Backend/venv/lib/python3.12/site-packages/anyio/_core/_exceptions.py

@@ -0,0 +1,94 @@
+from __future__ import annotations
+
+from traceback import format_exception
+
+
+class BrokenResourceError(Exception):
+    """
+    Raised when trying to use a resource that has been rendered unusable due to external causes
+    (e.g. a send stream whose peer has disconnected).
+    """
+
+
+class BrokenWorkerProcess(Exception):
+    """
+    Raised by :func:`run_sync_in_process` if the worker process terminates abruptly or otherwise
+    misbehaves.
+    """
+
+
+class BusyResourceError(Exception):
+    """Raised when two tasks are trying to read from or write to the same resource concurrently."""
+
+    def __init__(self, action: str):
+        super().__init__(f"Another task is already {action} this resource")
+
+
+class ClosedResourceError(Exception):
+    """Raised when trying to use a resource that has been closed."""
+
+
+class DelimiterNotFound(Exception):
+    """
+    Raised during :meth:`~anyio.streams.buffered.BufferedByteReceiveStream.receive_until` if the
+    maximum number of bytes has been read without the delimiter being found.
+    """
+
+    def __init__(self, max_bytes: int) -> None:
+        super().__init__(
+            f"The delimiter was not found among the first {max_bytes} bytes"
+        )
+
+
+class EndOfStream(Exception):
+    """Raised when trying to read from a stream that has been closed from the other end."""
+
+
+class ExceptionGroup(BaseException):
+    """
+    Raised when multiple exceptions have been raised in a task group.
+
+    :var ~typing.Sequence[BaseException] exceptions: the sequence of exceptions raised together
+    """
+
+    SEPARATOR = "----------------------------\n"
+
+    exceptions: list[BaseException]
+
+    def __str__(self) -> str:
+        tracebacks = [
+            "".join(format_exception(type(exc), exc, exc.__traceback__))
+            for exc in self.exceptions
+        ]
+        return (
+            f"{len(self.exceptions)} exceptions were raised in the task group:\n"
+            f"{self.SEPARATOR}{self.SEPARATOR.join(tracebacks)}"
+        )
+
+    def __repr__(self) -> str:
+        exception_reprs = ", ".join(repr(exc) for exc in self.exceptions)
+        return f"<{self.__class__.__name__}: {exception_reprs}>"
+
+
+class IncompleteRead(Exception):
+    """
+    Raised during :meth:`~anyio.streams.buffered.BufferedByteReceiveStream.receive_exactly` or
+    :meth:`~anyio.streams.buffered.BufferedByteReceiveStream.receive_until` if the
+    connection is closed before the requested amount of bytes has been read.
+    """
+
+    def __init__(self) -> None:
+        super().__init__(
+            "The stream was closed before the read operation could be completed"
+        )
+
+
+class TypedAttributeLookupError(LookupError):
+    """
+    Raised by :meth:`~anyio.TypedAttributeProvider.extra` when the given typed attribute is not
+    found and no default value has been given.
+    """
+
+
+class WouldBlock(Exception):
+    """Raised by ``X_nowait`` functions if ``X()`` would block."""

Backend/venv/lib/python3.12/site-packages/anyio/_core/_fileio.py

@@ -0,0 +1,603 @@
+from __future__ import annotations
+
+import os
+import pathlib
+import sys
+from dataclasses import dataclass
+from functools import partial
+from os import PathLike
+from typing import (
+    IO,
+    TYPE_CHECKING,
+    Any,
+    AnyStr,
+    AsyncIterator,
+    Callable,
+    Generic,
+    Iterable,
+    Iterator,
+    Sequence,
+    cast,
+    overload,
+)
+
+from .. import to_thread
+from ..abc import AsyncResource
+
+if sys.version_info >= (3, 8):
+    from typing import Final
+else:
+    from typing_extensions import Final
+
+if TYPE_CHECKING:
+    from _typeshed import OpenBinaryMode, OpenTextMode, ReadableBuffer, WriteableBuffer
+else:
+    ReadableBuffer = OpenBinaryMode = OpenTextMode = WriteableBuffer = object
+
+
+class AsyncFile(AsyncResource, Generic[AnyStr]):
+    """
+    An asynchronous file object.
+
+    This class wraps a standard file object and provides async friendly versions of the following
+    blocking methods (where available on the original file object):
+
+    * read
+    * read1
+    * readline
+    * readlines
+    * readinto
+    * readinto1
+    * write
+    * writelines
+    * truncate
+    * seek
+    * tell
+    * flush
+
+    All other methods are directly passed through.
+
+    This class supports the asynchronous context manager protocol which closes the underlying file
+    at the end of the context block.
+
+    This class also supports asynchronous iteration::
+
+        async with await open_file(...) as f:
+            async for line in f:
+                print(line)
+    """
+
+    def __init__(self, fp: IO[AnyStr]) -> None:
+        self._fp: Any = fp
+
+    def __getattr__(self, name: str) -> object:
+        return getattr(self._fp, name)
+
+    @property
+    def wrapped(self) -> IO[AnyStr]:
+        """The wrapped file object."""
+        return self._fp
+
+    async def __aiter__(self) -> AsyncIterator[AnyStr]:
+        while True:
+            line = await self.readline()
+            if line:
+                yield line
+            else:
+                break
+
+    async def aclose(self) -> None:
+        return await to_thread.run_sync(self._fp.close)
+
+    async def read(self, size: int = -1) -> AnyStr:
+        return await to_thread.run_sync(self._fp.read, size)
+
+    async def read1(self: AsyncFile[bytes], size: int = -1) -> bytes:
+        return await to_thread.run_sync(self._fp.read1, size)
+
+    async def readline(self) -> AnyStr:
+        return await to_thread.run_sync(self._fp.readline)
+
+    async def readlines(self) -> list[AnyStr]:
+        return await to_thread.run_sync(self._fp.readlines)
+
+    async def readinto(self: AsyncFile[bytes], b: WriteableBuffer) -> bytes:
+        return await to_thread.run_sync(self._fp.readinto, b)
+
+    async def readinto1(self: AsyncFile[bytes], b: WriteableBuffer) -> bytes:
+        return await to_thread.run_sync(self._fp.readinto1, b)
+
+    @overload
+    async def write(self: AsyncFile[bytes], b: ReadableBuffer) -> int:
+        ...
+
+    @overload
+    async def write(self: AsyncFile[str], b: str) -> int:
+        ...
+
+    async def write(self, b: ReadableBuffer | str) -> int:
+        return await to_thread.run_sync(self._fp.write, b)
+
+    @overload
+    async def writelines(
+        self: AsyncFile[bytes], lines: Iterable[ReadableBuffer]
+    ) -> None:
+        ...
+
+    @overload
+    async def writelines(self: AsyncFile[str], lines: Iterable[str]) -> None:
+        ...
+
+    async def writelines(self, lines: Iterable[ReadableBuffer] | Iterable[str]) -> None:
+        return await to_thread.run_sync(self._fp.writelines, lines)
+
+    async def truncate(self, size: int | None = None) -> int:
+        return await to_thread.run_sync(self._fp.truncate, size)
+
+    async def seek(self, offset: int, whence: int | None = os.SEEK_SET) -> int:
+        return await to_thread.run_sync(self._fp.seek, offset, whence)
+
+    async def tell(self) -> int:
+        return await to_thread.run_sync(self._fp.tell)
+
+    async def flush(self) -> None:
+        return await to_thread.run_sync(self._fp.flush)
+
+
+@overload
+async def open_file(
+    file: str | PathLike[str] | int,
+    mode: OpenBinaryMode,
+    buffering: int = ...,
+    encoding: str | None = ...,
+    errors: str | None = ...,
+    newline: str | None = ...,
+    closefd: bool = ...,
+    opener: Callable[[str, int], int] | None = ...,
+) -> AsyncFile[bytes]:
+    ...
+
+
+@overload
+async def open_file(
+    file: str | PathLike[str] | int,
+    mode: OpenTextMode = ...,
+    buffering: int = ...,
+    encoding: str | None = ...,
+    errors: str | None = ...,
+    newline: str | None = ...,
+    closefd: bool = ...,
+    opener: Callable[[str, int], int] | None = ...,
+) -> AsyncFile[str]:
+    ...
+
+
+async def open_file(
+    file: str | PathLike[str] | int,
+    mode: str = "r",
+    buffering: int = -1,
+    encoding: str | None = None,
+    errors: str | None = None,
+    newline: str | None = None,
+    closefd: bool = True,
+    opener: Callable[[str, int], int] | None = None,
+) -> AsyncFile[Any]:
+    """
+    Open a file asynchronously.
+
+    The arguments are exactly the same as for the builtin :func:`open`.
+
+    :return: an asynchronous file object
+
+    """
+    fp = await to_thread.run_sync(
+        open, file, mode, buffering, encoding, errors, newline, closefd, opener
+    )
+    return AsyncFile(fp)
+
+
+def wrap_file(file: IO[AnyStr]) -> AsyncFile[AnyStr]:
+    """
+    Wrap an existing file as an asynchronous file.
+
+    :param file: an existing file-like object
+    :return: an asynchronous file object
+
+    """
+    return AsyncFile(file)
+
+
+@dataclass(eq=False)
+class _PathIterator(AsyncIterator["Path"]):
+    iterator: Iterator[PathLike[str]]
+
+    async def __anext__(self) -> Path:
+        nextval = await to_thread.run_sync(next, self.iterator, None, cancellable=True)
+        if nextval is None:
+            raise StopAsyncIteration from None
+
+        return Path(cast("PathLike[str]", nextval))
+
+
+class Path:
+    """
+    An asynchronous version of :class:`pathlib.Path`.
+
+    This class cannot be substituted for :class:`pathlib.Path` or :class:`pathlib.PurePath`, but
+    it is compatible with the :class:`os.PathLike` interface.
+
+    It implements the Python 3.10 version of :class:`pathlib.Path` interface, except for the
+    deprecated :meth:`~pathlib.Path.link_to` method.
+
+    Any methods that do disk I/O need to be awaited on. These methods are:
+
+    * :meth:`~pathlib.Path.absolute`
+    * :meth:`~pathlib.Path.chmod`
+    * :meth:`~pathlib.Path.cwd`
+    * :meth:`~pathlib.Path.exists`
+    * :meth:`~pathlib.Path.expanduser`
+    * :meth:`~pathlib.Path.group`
+    * :meth:`~pathlib.Path.hardlink_to`
+    * :meth:`~pathlib.Path.home`
+    * :meth:`~pathlib.Path.is_block_device`
+    * :meth:`~pathlib.Path.is_char_device`
+    * :meth:`~pathlib.Path.is_dir`
+    * :meth:`~pathlib.Path.is_fifo`
+    * :meth:`~pathlib.Path.is_file`
+    * :meth:`~pathlib.Path.is_mount`
+    * :meth:`~pathlib.Path.lchmod`
+    * :meth:`~pathlib.Path.lstat`
+    * :meth:`~pathlib.Path.mkdir`
+    * :meth:`~pathlib.Path.open`
+    * :meth:`~pathlib.Path.owner`
+    * :meth:`~pathlib.Path.read_bytes`
+    * :meth:`~pathlib.Path.read_text`
+    * :meth:`~pathlib.Path.readlink`
+    * :meth:`~pathlib.Path.rename`
+    * :meth:`~pathlib.Path.replace`
+    * :meth:`~pathlib.Path.rmdir`
+    * :meth:`~pathlib.Path.samefile`
+    * :meth:`~pathlib.Path.stat`
+    * :meth:`~pathlib.Path.touch`
+    * :meth:`~pathlib.Path.unlink`
+    * :meth:`~pathlib.Path.write_bytes`
+    * :meth:`~pathlib.Path.write_text`
+
+    Additionally, the following methods return an async iterator yielding :class:`~.Path` objects:
+
+    * :meth:`~pathlib.Path.glob`
+    * :meth:`~pathlib.Path.iterdir`
+    * :meth:`~pathlib.Path.rglob`
+    """
+
+    __slots__ = "_path", "__weakref__"
+
+    __weakref__: Any
+
+    def __init__(self, *args: str | PathLike[str]) -> None:
+        self._path: Final[pathlib.Path] = pathlib.Path(*args)
+
+    def __fspath__(self) -> str:
+        return self._path.__fspath__()
+
+    def __str__(self) -> str:
+        return self._path.__str__()
+
+    def __repr__(self) -> str:
+        return f"{self.__class__.__name__}({self.as_posix()!r})"
+
+    def __bytes__(self) -> bytes:
+        return self._path.__bytes__()
+
+    def __hash__(self) -> int:
+        return self._path.__hash__()
+
+    def __eq__(self, other: object) -> bool:
+        target = other._path if isinstance(other, Path) else other
+        return self._path.__eq__(target)
+
+    def __lt__(self, other: Path) -> bool:
+        target = other._path if isinstance(other, Path) else other
+        return self._path.__lt__(target)
+
+    def __le__(self, other: Path) -> bool:
+        target = other._path if isinstance(other, Path) else other
+        return self._path.__le__(target)
+
+    def __gt__(self, other: Path) -> bool:
+        target = other._path if isinstance(other, Path) else other
+        return self._path.__gt__(target)
+
+    def __ge__(self, other: Path) -> bool:
+        target = other._path if isinstance(other, Path) else other
+        return self._path.__ge__(target)
+
+    def __truediv__(self, other: Any) -> Path:
+        return Path(self._path / other)
+
+    def __rtruediv__(self, other: Any) -> Path:
+        return Path(other) / self
+
+    @property
+    def parts(self) -> tuple[str, ...]:
+        return self._path.parts
+
+    @property
+    def drive(self) -> str:
+        return self._path.drive
+
+    @property
+    def root(self) -> str:
+        return self._path.root
+
+    @property
+    def anchor(self) -> str:
+        return self._path.anchor
+
+    @property
+    def parents(self) -> Sequence[Path]:
+        return tuple(Path(p) for p in self._path.parents)
+
+    @property
+    def parent(self) -> Path:
+        return Path(self._path.parent)
+
+    @property
+    def name(self) -> str:
+        return self._path.name
+
+    @property
+    def suffix(self) -> str:
+        return self._path.suffix
+
+    @property
+    def suffixes(self) -> list[str]:
+        return self._path.suffixes
+
+    @property
+    def stem(self) -> str:
+        return self._path.stem
+
+    async def absolute(self) -> Path:
+        path = await to_thread.run_sync(self._path.absolute)
+        return Path(path)
+
+    def as_posix(self) -> str:
+        return self._path.as_posix()
+
+    def as_uri(self) -> str:
+        return self._path.as_uri()
+
+    def match(self, path_pattern: str) -> bool:
+        return self._path.match(path_pattern)
+
+    def is_relative_to(self, *other: str | PathLike[str]) -> bool:
+        try:
+            self.relative_to(*other)
+            return True
+        except ValueError:
+            return False
+
+    async def chmod(self, mode: int, *, follow_symlinks: bool = True) -> None:
+        func = partial(os.chmod, follow_symlinks=follow_symlinks)
+        return await to_thread.run_sync(func, self._path, mode)
+
+    @classmethod
+    async def cwd(cls) -> Path:
+        path = await to_thread.run_sync(pathlib.Path.cwd)
+        return cls(path)
+
+    async def exists(self) -> bool:
+        return await to_thread.run_sync(self._path.exists, cancellable=True)
+
+    async def expanduser(self) -> Path:
+        return Path(await to_thread.run_sync(self._path.expanduser, cancellable=True))
+
+    def glob(self, pattern: str) -> AsyncIterator[Path]:
+        gen = self._path.glob(pattern)
+        return _PathIterator(gen)
+
+    async def group(self) -> str:
+        return await to_thread.run_sync(self._path.group, cancellable=True)
+
+    async def hardlink_to(self, target: str | pathlib.Path | Path) -> None:
+        if isinstance(target, Path):
+            target = target._path
+
+        await to_thread.run_sync(os.link, target, self)
+
+    @classmethod
+    async def home(cls) -> Path:
+        home_path = await to_thread.run_sync(pathlib.Path.home)
+        return cls(home_path)
+
+    def is_absolute(self) -> bool:
+        return self._path.is_absolute()
+
+    async def is_block_device(self) -> bool:
+        return await to_thread.run_sync(self._path.is_block_device, cancellable=True)
+
+    async def is_char_device(self) -> bool:
+        return await to_thread.run_sync(self._path.is_char_device, cancellable=True)
+
+    async def is_dir(self) -> bool:
+        return await to_thread.run_sync(self._path.is_dir, cancellable=True)
+
+    async def is_fifo(self) -> bool:
+        return await to_thread.run_sync(self._path.is_fifo, cancellable=True)
+
+    async def is_file(self) -> bool:
+        return await to_thread.run_sync(self._path.is_file, cancellable=True)
+
+    async def is_mount(self) -> bool:
+        return await to_thread.run_sync(os.path.ismount, self._path, cancellable=True)
+
+    def is_reserved(self) -> bool:
+        return self._path.is_reserved()
+
+    async def is_socket(self) -> bool:
+        return await to_thread.run_sync(self._path.is_socket, cancellable=True)
+
+    async def is_symlink(self) -> bool:
+        return await to_thread.run_sync(self._path.is_symlink, cancellable=True)
+
+    def iterdir(self) -> AsyncIterator[Path]:
+        gen = self._path.iterdir()
+        return _PathIterator(gen)
+
+    def joinpath(self, *args: str | PathLike[str]) -> Path:
+        return Path(self._path.joinpath(*args))
+
+    async def lchmod(self, mode: int) -> None:
+        await to_thread.run_sync(self._path.lchmod, mode)
+
+    async def lstat(self) -> os.stat_result:
+        return await to_thread.run_sync(self._path.lstat, cancellable=True)
+
+    async def mkdir(
+        self, mode: int = 0o777, parents: bool = False, exist_ok: bool = False
+    ) -> None:
+        await to_thread.run_sync(self._path.mkdir, mode, parents, exist_ok)
+
+    @overload
+    async def open(
+        self,
+        mode: OpenBinaryMode,
+        buffering: int = ...,
+        encoding: str | None = ...,
+        errors: str | None = ...,
+        newline: str | None = ...,
+    ) -> AsyncFile[bytes]:
+        ...
+
+    @overload
+    async def open(
+        self,
+        mode: OpenTextMode = ...,
+        buffering: int = ...,
+        encoding: str | None = ...,
+        errors: str | None = ...,
+        newline: str | None = ...,
+    ) -> AsyncFile[str]:
+        ...
+
+    async def open(
+        self,
+        mode: str = "r",
+        buffering: int = -1,
+        encoding: str | None = None,
+        errors: str | None = None,
+        newline: str | None = None,
+    ) -> AsyncFile[Any]:
+        fp = await to_thread.run_sync(
+            self._path.open, mode, buffering, encoding, errors, newline
+        )
+        return AsyncFile(fp)
+
+    async def owner(self) -> str:
+        return await to_thread.run_sync(self._path.owner, cancellable=True)
+
+    async def read_bytes(self) -> bytes:
+        return await to_thread.run_sync(self._path.read_bytes)
+
+    async def read_text(
+        self, encoding: str | None = None, errors: str | None = None
+    ) -> str:
+        return await to_thread.run_sync(self._path.read_text, encoding, errors)
+
+    def relative_to(self, *other: str | PathLike[str]) -> Path:
+        return Path(self._path.relative_to(*other))
+
+    async def readlink(self) -> Path:
+        target = await to_thread.run_sync(os.readlink, self._path)
+        return Path(cast(str, target))
+
+    async def rename(self, target: str | pathlib.PurePath | Path) -> Path:
+        if isinstance(target, Path):
+            target = target._path
+
+        await to_thread.run_sync(self._path.rename, target)
+        return Path(target)
+
+    async def replace(self, target: str | pathlib.PurePath | Path) -> Path:
+        if isinstance(target, Path):
+            target = target._path
+
+        await to_thread.run_sync(self._path.replace, target)
+        return Path(target)
+
+    async def resolve(self, strict: bool = False) -> Path:
+        func = partial(self._path.resolve, strict=strict)
+        return Path(await to_thread.run_sync(func, cancellable=True))
+
+    def rglob(self, pattern: str) -> AsyncIterator[Path]:
+        gen = self._path.rglob(pattern)
+        return _PathIterator(gen)
+
+    async def rmdir(self) -> None:
+        await to_thread.run_sync(self._path.rmdir)
+
+    async def samefile(
+        self, other_path: str | bytes | int | pathlib.Path | Path
+    ) -> bool:
+        if isinstance(other_path, Path):
+            other_path = other_path._path
+
+        return await to_thread.run_sync(
+            self._path.samefile, other_path, cancellable=True
+        )
+
+    async def stat(self, *, follow_symlinks: bool = True) -> os.stat_result:
+        func = partial(os.stat, follow_symlinks=follow_symlinks)
+        return await to_thread.run_sync(func, self._path, cancellable=True)
+
+    async def symlink_to(
+        self,
+        target: str | pathlib.Path | Path,
+        target_is_directory: bool = False,
+    ) -> None:
+        if isinstance(target, Path):
+            target = target._path
+
+        await to_thread.run_sync(self._path.symlink_to, target, target_is_directory)
+
+    async def touch(self, mode: int = 0o666, exist_ok: bool = True) -> None:
+        await to_thread.run_sync(self._path.touch, mode, exist_ok)
+
+    async def unlink(self, missing_ok: bool = False) -> None:
+        try:
+            await to_thread.run_sync(self._path.unlink)
+        except FileNotFoundError:
+            if not missing_ok:
+                raise
+
+    def with_name(self, name: str) -> Path:
+        return Path(self._path.with_name(name))
+
+    def with_stem(self, stem: str) -> Path:
+        return Path(self._path.with_name(stem + self._path.suffix))
+
+    def with_suffix(self, suffix: str) -> Path:
+        return Path(self._path.with_suffix(suffix))
+
+    async def write_bytes(self, data: bytes) -> int:
+        return await to_thread.run_sync(self._path.write_bytes, data)
+
+    async def write_text(
+        self,
+        data: str,
+        encoding: str | None = None,
+        errors: str | None = None,
+        newline: str | None = None,
+    ) -> int:
+        # Path.write_text() does not support the "newline" parameter before Python 3.10
+        def sync_write_text() -> int:
+            with self._path.open(
+                "w", encoding=encoding, errors=errors, newline=newline
+            ) as fp:
+                return fp.write(data)
+
+        return await to_thread.run_sync(sync_write_text)
+
+
+PathLike.register(Path)

Backend/venv/lib/python3.12/site-packages/anyio/_core/_resources.py

@@ -0,0 +1,18 @@
+from __future__ import annotations
+
+from ..abc import AsyncResource
+from ._tasks import CancelScope
+
+
+async def aclose_forcefully(resource: AsyncResource) -> None:
+    """
+    Close an asynchronous resource in a cancelled scope.
+
+    Doing this closes the resource without waiting on anything.
+
+    :param resource: the resource to close
+
+    """
+    with CancelScope() as scope:
+        scope.cancel()
+        await resource.aclose()

Backend/venv/lib/python3.12/site-packages/anyio/_core/_signals.py

@@ -0,0 +1,26 @@
+from __future__ import annotations
+
+from typing import AsyncIterator
+
+from ._compat import DeprecatedAsyncContextManager
+from ._eventloop import get_asynclib
+
+
+def open_signal_receiver(
+    *signals: int,
+) -> DeprecatedAsyncContextManager[AsyncIterator[int]]:
+    """
+    Start receiving operating system signals.
+
+    :param signals: signals to receive (e.g. ``signal.SIGINT``)
+    :return: an asynchronous context manager for an asynchronous iterator which yields signal
+        numbers
+
+    .. warning:: Windows does not support signals natively so it is best to avoid relying on this
+        in cross-platform applications.
+
+    .. warning:: On asyncio, this permanently replaces any previous signal handler for the given
+        signals, as set via :meth:`~asyncio.loop.add_signal_handler`.
+
+    """
+    return get_asynclib().open_signal_receiver(*signals)

Backend/venv/lib/python3.12/site-packages/anyio/_core/_sockets.py

@@ -0,0 +1,607 @@
+from __future__ import annotations
+
+import socket
+import ssl
+import sys
+from ipaddress import IPv6Address, ip_address
+from os import PathLike, chmod
+from pathlib import Path
+from socket import AddressFamily, SocketKind
+from typing import Awaitable, List, Tuple, cast, overload
+
+from .. import to_thread
+from ..abc import (
+    ConnectedUDPSocket,
+    IPAddressType,
+    IPSockAddrType,
+    SocketListener,
+    SocketStream,
+    UDPSocket,
+    UNIXSocketStream,
+)
+from ..streams.stapled import MultiListener
+from ..streams.tls import TLSStream
+from ._eventloop import get_asynclib
+from ._resources import aclose_forcefully
+from ._synchronization import Event
+from ._tasks import create_task_group, move_on_after
+
+if sys.version_info >= (3, 8):
+    from typing import Literal
+else:
+    from typing_extensions import Literal
+
+IPPROTO_IPV6 = getattr(socket, "IPPROTO_IPV6", 41)  # https://bugs.python.org/issue29515
+
+GetAddrInfoReturnType = List[
+    Tuple[AddressFamily, SocketKind, int, str, Tuple[str, int]]
+]
+AnyIPAddressFamily = Literal[
+    AddressFamily.AF_UNSPEC, AddressFamily.AF_INET, AddressFamily.AF_INET6
+]
+IPAddressFamily = Literal[AddressFamily.AF_INET, AddressFamily.AF_INET6]
+
+
+# tls_hostname given
+@overload
+async def connect_tcp(
+    remote_host: IPAddressType,
+    remote_port: int,
+    *,
+    local_host: IPAddressType | None = ...,
+    ssl_context: ssl.SSLContext | None = ...,
+    tls_standard_compatible: bool = ...,
+    tls_hostname: str,
+    happy_eyeballs_delay: float = ...,
+) -> TLSStream:
+    ...
+
+
+# ssl_context given
+@overload
+async def connect_tcp(
+    remote_host: IPAddressType,
+    remote_port: int,
+    *,
+    local_host: IPAddressType | None = ...,
+    ssl_context: ssl.SSLContext,
+    tls_standard_compatible: bool = ...,
+    tls_hostname: str | None = ...,
+    happy_eyeballs_delay: float = ...,
+) -> TLSStream:
+    ...
+
+
+# tls=True
+@overload
+async def connect_tcp(
+    remote_host: IPAddressType,
+    remote_port: int,
+    *,
+    local_host: IPAddressType | None = ...,
+    tls: Literal[True],
+    ssl_context: ssl.SSLContext | None = ...,
+    tls_standard_compatible: bool = ...,
+    tls_hostname: str | None = ...,
+    happy_eyeballs_delay: float = ...,
+) -> TLSStream:
+    ...
+
+
+# tls=False
+@overload
+async def connect_tcp(
+    remote_host: IPAddressType,
+    remote_port: int,
+    *,
+    local_host: IPAddressType | None = ...,
+    tls: Literal[False],
+    ssl_context: ssl.SSLContext | None = ...,
+    tls_standard_compatible: bool = ...,
+    tls_hostname: str | None = ...,
+    happy_eyeballs_delay: float = ...,
+) -> SocketStream:
+    ...
+
+
+# No TLS arguments
+@overload
+async def connect_tcp(
+    remote_host: IPAddressType,
+    remote_port: int,
+    *,
+    local_host: IPAddressType | None = ...,
+    happy_eyeballs_delay: float = ...,
+) -> SocketStream:
+    ...
+
+
+async def connect_tcp(
+    remote_host: IPAddressType,
+    remote_port: int,
+    *,
+    local_host: IPAddressType | None = None,
+    tls: bool = False,
+    ssl_context: ssl.SSLContext | None = None,
+    tls_standard_compatible: bool = True,
+    tls_hostname: str | None = None,
+    happy_eyeballs_delay: float = 0.25,
+) -> SocketStream | TLSStream:
+    """
+    Connect to a host using the TCP protocol.
+
+    This function implements the stateless version of the Happy Eyeballs algorithm (RFC
+    6555). If ``remote_host`` is a host name that resolves to multiple IP addresses,
+    each one is tried until one connection attempt succeeds. If the first attempt does
+    not connected within 250 milliseconds, a second attempt is started using the next
+    address in the list, and so on. On IPv6 enabled systems, an IPv6 address (if
+    available) is tried first.
+
+    When the connection has been established, a TLS handshake will be done if either
+    ``ssl_context`` or ``tls_hostname`` is not ``None``, or if ``tls`` is ``True``.
+
+    :param remote_host: the IP address or host name to connect to
+    :param remote_port: port on the target host to connect to
+    :param local_host: the interface address or name to bind the socket to before connecting
+    :param tls: ``True`` to do a TLS handshake with the connected stream and return a
+        :class:`~anyio.streams.tls.TLSStream` instead
+    :param ssl_context: the SSL context object to use (if omitted, a default context is created)
+    :param tls_standard_compatible: If ``True``, performs the TLS shutdown handshake before closing
+        the stream and requires that the server does this as well. Otherwise,
+        :exc:`~ssl.SSLEOFError` may be raised during reads from the stream.
+        Some protocols, such as HTTP, require this option to be ``False``.
+        See :meth:`~ssl.SSLContext.wrap_socket` for details.
+    :param tls_hostname: host name to check the server certificate against (defaults to the value
+        of ``remote_host``)
+    :param happy_eyeballs_delay: delay (in seconds) before starting the next connection attempt
+    :return: a socket stream object if no TLS handshake was done, otherwise a TLS stream
+    :raises OSError: if the connection attempt fails
+
+    """
+    # Placed here due to https://github.com/python/mypy/issues/7057
+    connected_stream: SocketStream | None = None
+
+    async def try_connect(remote_host: str, event: Event) -> None:
+        nonlocal connected_stream
+        try:
+            stream = await asynclib.connect_tcp(remote_host, remote_port, local_address)
+        except OSError as exc:
+            oserrors.append(exc)
+            return
+        else:
+            if connected_stream is None:
+                connected_stream = stream
+                tg.cancel_scope.cancel()
+            else:
+                await stream.aclose()
+        finally:
+            event.set()
+
+    asynclib = get_asynclib()
+    local_address: IPSockAddrType | None = None
+    family = socket.AF_UNSPEC
+    if local_host:
+        gai_res = await getaddrinfo(str(local_host), None)
+        family, *_, local_address = gai_res[0]
+
+    target_host = str(remote_host)
+    try:
+        addr_obj = ip_address(remote_host)
+    except ValueError:
+        # getaddrinfo() will raise an exception if name resolution fails
+        gai_res = await getaddrinfo(
+            target_host, remote_port, family=family, type=socket.SOCK_STREAM
+        )
+
+        # Organize the list so that the first address is an IPv6 address (if available) and the
+        # second one is an IPv4 addresses. The rest can be in whatever order.
+        v6_found = v4_found = False
+        target_addrs: list[tuple[socket.AddressFamily, str]] = []
+        for af, *rest, sa in gai_res:
+            if af == socket.AF_INET6 and not v6_found:
+                v6_found = True
+                target_addrs.insert(0, (af, sa[0]))
+            elif af == socket.AF_INET and not v4_found and v6_found:
+                v4_found = True
+                target_addrs.insert(1, (af, sa[0]))
+            else:
+                target_addrs.append((af, sa[0]))
+    else:
+        if isinstance(addr_obj, IPv6Address):
+            target_addrs = [(socket.AF_INET6, addr_obj.compressed)]
+        else:
+            target_addrs = [(socket.AF_INET, addr_obj.compressed)]
+
+    oserrors: list[OSError] = []
+    async with create_task_group() as tg:
+        for i, (af, addr) in enumerate(target_addrs):
+            event = Event()
+            tg.start_soon(try_connect, addr, event)
+            with move_on_after(happy_eyeballs_delay):
+                await event.wait()
+
+    if connected_stream is None:
+        cause = oserrors[0] if len(oserrors) == 1 else asynclib.ExceptionGroup(oserrors)
+        raise OSError("All connection attempts failed") from cause
+
+    if tls or tls_hostname or ssl_context:
+        try:
+            return await TLSStream.wrap(
+                connected_stream,
+                server_side=False,
+                hostname=tls_hostname or str(remote_host),
+                ssl_context=ssl_context,
+                standard_compatible=tls_standard_compatible,
+            )
+        except BaseException:
+            await aclose_forcefully(connected_stream)
+            raise
+
+    return connected_stream
+
+
+async def connect_unix(path: str | PathLike[str]) -> UNIXSocketStream:
+    """
+    Connect to the given UNIX socket.
+
+    Not available on Windows.
+
+    :param path: path to the socket
+    :return: a socket stream object
+
+    """
+    path = str(Path(path))
+    return await get_asynclib().connect_unix(path)
+
+
+async def create_tcp_listener(
+    *,
+    local_host: IPAddressType | None = None,
+    local_port: int = 0,
+    family: AnyIPAddressFamily = socket.AddressFamily.AF_UNSPEC,
+    backlog: int = 65536,
+    reuse_port: bool = False,
+) -> MultiListener[SocketStream]:
+    """
+    Create a TCP socket listener.
+
+    :param local_port: port number to listen on
+    :param local_host: IP address of the interface to listen on. If omitted, listen on
+        all IPv4 and IPv6 interfaces. To listen on all interfaces on a specific address
+        family, use ``0.0.0.0`` for IPv4 or ``::`` for IPv6.
+    :param family: address family (used if ``local_host`` was omitted)
+    :param backlog: maximum number of queued incoming connections (up to a maximum of
+        2**16, or 65536)
+    :param reuse_port: ``True`` to allow multiple sockets to bind to the same
+        address/port (not supported on Windows)
+    :return: a list of listener objects
+
+    """
+    asynclib = get_asynclib()
+    backlog = min(backlog, 65536)
+    local_host = str(local_host) if local_host is not None else None
+    gai_res = await getaddrinfo(
+        local_host,  # type: ignore[arg-type]
+        local_port,
+        family=family,
+        type=socket.SocketKind.SOCK_STREAM if sys.platform == "win32" else 0,
+        flags=socket.AI_PASSIVE | socket.AI_ADDRCONFIG,
+    )
+    listeners: list[SocketListener] = []
+    try:
+        # The set() is here to work around a glibc bug:
+        # https://sourceware.org/bugzilla/show_bug.cgi?id=14969
+        sockaddr: tuple[str, int] | tuple[str, int, int, int]
+        for fam, kind, *_, sockaddr in sorted(set(gai_res)):
+            # Workaround for an uvloop bug where we don't get the correct scope ID for
+            # IPv6 link-local addresses when passing type=socket.SOCK_STREAM to
+            # getaddrinfo(): https://github.com/MagicStack/uvloop/issues/539
+            if sys.platform != "win32" and kind is not SocketKind.SOCK_STREAM:
+                continue
+
+            raw_socket = socket.socket(fam)
+            raw_socket.setblocking(False)
+
+            # For Windows, enable exclusive address use. For others, enable address reuse.
+            if sys.platform == "win32":
+                raw_socket.setsockopt(socket.SOL_SOCKET, socket.SO_EXCLUSIVEADDRUSE, 1)
+            else:
+                raw_socket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
+
+            if reuse_port:
+                raw_socket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEPORT, 1)
+
+            # If only IPv6 was requested, disable dual stack operation
+            if fam == socket.AF_INET6:
+                raw_socket.setsockopt(IPPROTO_IPV6, socket.IPV6_V6ONLY, 1)
+
+                # Workaround for #554
+                if "%" in sockaddr[0]:
+                    addr, scope_id = sockaddr[0].split("%", 1)
+                    sockaddr = (addr, sockaddr[1], 0, int(scope_id))
+
+            raw_socket.bind(sockaddr)
+            raw_socket.listen(backlog)
+            listener = asynclib.TCPSocketListener(raw_socket)
+            listeners.append(listener)
+    except BaseException:
+        for listener in listeners:
+            await listener.aclose()
+
+        raise
+
+    return MultiListener(listeners)
+
+
+async def create_unix_listener(
+    path: str | PathLike[str],
+    *,
+    mode: int | None = None,
+    backlog: int = 65536,
+) -> SocketListener:
+    """
+    Create a UNIX socket listener.
+
+    Not available on Windows.
+
+    :param path: path of the socket
+    :param mode: permissions to set on the socket
+    :param backlog: maximum number of queued incoming connections (up to a maximum of 2**16, or
+        65536)
+    :return: a listener object
+
+    .. versionchanged:: 3.0
+        If a socket already exists on the file system in the given path, it will be removed first.
+
+    """
+    path_str = str(path)
+    path = Path(path)
+    if path.is_socket():
+        path.unlink()
+
+    backlog = min(backlog, 65536)
+    raw_socket = socket.socket(socket.AF_UNIX)
+    raw_socket.setblocking(False)
+    try:
+        await to_thread.run_sync(raw_socket.bind, path_str, cancellable=True)
+        if mode is not None:
+            await to_thread.run_sync(chmod, path_str, mode, cancellable=True)
+
+        raw_socket.listen(backlog)
+        return get_asynclib().UNIXSocketListener(raw_socket)
+    except BaseException:
+        raw_socket.close()
+        raise
+
+
+async def create_udp_socket(
+    family: AnyIPAddressFamily = AddressFamily.AF_UNSPEC,
+    *,
+    local_host: IPAddressType | None = None,
+    local_port: int = 0,
+    reuse_port: bool = False,
+) -> UDPSocket:
+    """
+    Create a UDP socket.
+
+    If ``local_port`` has been given, the socket will be bound to this port on the local
+    machine, making this socket suitable for providing UDP based services.
+
+    :param family: address family (``AF_INET`` or ``AF_INET6``) – automatically determined from
+        ``local_host`` if omitted
+    :param local_host: IP address or host name of the local interface to bind to
+    :param local_port: local port to bind to
+    :param reuse_port: ``True`` to allow multiple sockets to bind to the same address/port
+        (not supported on Windows)
+    :return: a UDP socket
+
+    """
+    if family is AddressFamily.AF_UNSPEC and not local_host:
+        raise ValueError('Either "family" or "local_host" must be given')
+
+    if local_host:
+        gai_res = await getaddrinfo(
+            str(local_host),
+            local_port,
+            family=family,
+            type=socket.SOCK_DGRAM,
+            flags=socket.AI_PASSIVE | socket.AI_ADDRCONFIG,
+        )
+        family = cast(AnyIPAddressFamily, gai_res[0][0])
+        local_address = gai_res[0][-1]
+    elif family is AddressFamily.AF_INET6:
+        local_address = ("::", 0)
+    else:
+        local_address = ("0.0.0.0", 0)
+
+    return await get_asynclib().create_udp_socket(
+        family, local_address, None, reuse_port
+    )
+
+
+async def create_connected_udp_socket(
+    remote_host: IPAddressType,
+    remote_port: int,
+    *,
+    family: AnyIPAddressFamily = AddressFamily.AF_UNSPEC,
+    local_host: IPAddressType | None = None,
+    local_port: int = 0,
+    reuse_port: bool = False,
+) -> ConnectedUDPSocket:
+    """
+    Create a connected UDP socket.
+
+    Connected UDP sockets can only communicate with the specified remote host/port, and any packets
+    sent from other sources are dropped.
+
+    :param remote_host: remote host to set as the default target
+    :param remote_port: port on the remote host to set as the default target
+    :param family: address family (``AF_INET`` or ``AF_INET6``) – automatically determined from
+        ``local_host`` or ``remote_host`` if omitted
+    :param local_host: IP address or host name of the local interface to bind to
+    :param local_port: local port to bind to
+    :param reuse_port: ``True`` to allow multiple sockets to bind to the same address/port
+        (not supported on Windows)
+    :return: a connected UDP socket
+
+    """
+    local_address = None
+    if local_host:
+        gai_res = await getaddrinfo(
+            str(local_host),
+            local_port,
+            family=family,
+            type=socket.SOCK_DGRAM,
+            flags=socket.AI_PASSIVE | socket.AI_ADDRCONFIG,
+        )
+        family = cast(AnyIPAddressFamily, gai_res[0][0])
+        local_address = gai_res[0][-1]
+
+    gai_res = await getaddrinfo(
+        str(remote_host), remote_port, family=family, type=socket.SOCK_DGRAM
+    )
+    family = cast(AnyIPAddressFamily, gai_res[0][0])
+    remote_address = gai_res[0][-1]
+
+    return await get_asynclib().create_udp_socket(
+        family, local_address, remote_address, reuse_port
+    )
+
+
+async def getaddrinfo(
+    host: bytearray | bytes | str,
+    port: str | int | None,
+    *,
+    family: int | AddressFamily = 0,
+    type: int | SocketKind = 0,
+    proto: int = 0,
+    flags: int = 0,
+) -> GetAddrInfoReturnType:
+    """
+    Look up a numeric IP address given a host name.
+
+    Internationalized domain names are translated according to the (non-transitional) IDNA 2008
+    standard.
+
+    .. note:: 4-tuple IPv6 socket addresses are automatically converted to 2-tuples of
+        (host, port), unlike what :func:`socket.getaddrinfo` does.
+
+    :param host: host name
+    :param port: port number
+    :param family: socket family (`'AF_INET``, ...)
+    :param type: socket type (``SOCK_STREAM``, ...)
+    :param proto: protocol number
+    :param flags: flags to pass to upstream ``getaddrinfo()``
+    :return: list of tuples containing (family, type, proto, canonname, sockaddr)
+
+    .. seealso:: :func:`socket.getaddrinfo`
+
+    """
+    # Handle unicode hostnames
+    if isinstance(host, str):
+        try:
+            encoded_host = host.encode("ascii")
+        except UnicodeEncodeError:
+            import idna
+
+            encoded_host = idna.encode(host, uts46=True)
+    else:
+        encoded_host = host
+
+    gai_res = await get_asynclib().getaddrinfo(
+        encoded_host, port, family=family, type=type, proto=proto, flags=flags
+    )
+    return [
+        (family, type, proto, canonname, convert_ipv6_sockaddr(sockaddr))
+        for family, type, proto, canonname, sockaddr in gai_res
+    ]
+
+
+def getnameinfo(sockaddr: IPSockAddrType, flags: int = 0) -> Awaitable[tuple[str, str]]:
+    """
+    Look up the host name of an IP address.
+
+    :param sockaddr: socket address (e.g. (ipaddress, port) for IPv4)
+    :param flags: flags to pass to upstream ``getnameinfo()``
+    :return: a tuple of (host name, service name)
+
+    .. seealso:: :func:`socket.getnameinfo`
+
+    """
+    return get_asynclib().getnameinfo(sockaddr, flags)
+
+
+def wait_socket_readable(sock: socket.socket) -> Awaitable[None]:
+    """
+    Wait until the given socket has data to be read.
+
+    This does **NOT** work on Windows when using the asyncio backend with a proactor event loop
+    (default on py3.8+).
+
+    .. warning:: Only use this on raw sockets that have not been wrapped by any higher level
+        constructs like socket streams!
+
+    :param sock: a socket object
+    :raises ~anyio.ClosedResourceError: if the socket was closed while waiting for the
+        socket to become readable
+    :raises ~anyio.BusyResourceError: if another task is already waiting for the socket
+        to become readable
+
+    """
+    return get_asynclib().wait_socket_readable(sock)
+
+
+def wait_socket_writable(sock: socket.socket) -> Awaitable[None]:
+    """
+    Wait until the given socket can be written to.
+
+    This does **NOT** work on Windows when using the asyncio backend with a proactor event loop
+    (default on py3.8+).
+
+    .. warning:: Only use this on raw sockets that have not been wrapped by any higher level
+        constructs like socket streams!
+
+    :param sock: a socket object
+    :raises ~anyio.ClosedResourceError: if the socket was closed while waiting for the
+        socket to become writable
+    :raises ~anyio.BusyResourceError: if another task is already waiting for the socket
+        to become writable
+
+    """
+    return get_asynclib().wait_socket_writable(sock)
+
+
+#
+# Private API
+#
+
+
+def convert_ipv6_sockaddr(
+    sockaddr: tuple[str, int, int, int] | tuple[str, int]
+) -> tuple[str, int]:
+    """
+    Convert a 4-tuple IPv6 socket address to a 2-tuple (address, port) format.
+
+    If the scope ID is nonzero, it is added to the address, separated with ``%``.
+    Otherwise the flow id and scope id are simply cut off from the tuple.
+    Any other kinds of socket addresses are returned as-is.
+
+    :param sockaddr: the result of :meth:`~socket.socket.getsockname`
+    :return: the converted socket address
+
+    """
+    # This is more complicated than it should be because of MyPy
+    if isinstance(sockaddr, tuple) and len(sockaddr) == 4:
+        host, port, flowinfo, scope_id = cast(Tuple[str, int, int, int], sockaddr)
+        if scope_id:
+            # PyPy (as of v7.3.11) leaves the interface name in the result, so
+            # we discard it and only get the scope ID from the end
+            # (https://foss.heptapod.net/pypy/pypy/-/issues/3938)
+            host = host.split("%")[0]
+
+            # Add scope_id to the address
+            return f"{host}%{scope_id}", port
+        else:
+            return host, port
+    else:
+        return cast(Tuple[str, int], sockaddr)

Backend/venv/lib/python3.12/site-packages/anyio/_core/_streams.py

@@ -0,0 +1,47 @@
+from __future__ import annotations
+
+import math
+from typing import Any, TypeVar, overload
+
+from ..streams.memory import (
+    MemoryObjectReceiveStream,
+    MemoryObjectSendStream,
+    MemoryObjectStreamState,
+)
+
+T_Item = TypeVar("T_Item")
+
+
+@overload
+def create_memory_object_stream(
+    max_buffer_size: float = ...,
+) -> tuple[MemoryObjectSendStream[Any], MemoryObjectReceiveStream[Any]]:
+    ...
+
+
+@overload
+def create_memory_object_stream(
+    max_buffer_size: float = ..., item_type: type[T_Item] = ...
+) -> tuple[MemoryObjectSendStream[T_Item], MemoryObjectReceiveStream[T_Item]]:
+    ...
+
+
+def create_memory_object_stream(
+    max_buffer_size: float = 0, item_type: type[T_Item] | None = None
+) -> tuple[MemoryObjectSendStream[Any], MemoryObjectReceiveStream[Any]]:
+    """
+    Create a memory object stream.
+
+    :param max_buffer_size: number of items held in the buffer until ``send()`` starts blocking
+    :param item_type: type of item, for marking the streams with the right generic type for
+        static typing (not used at run time)
+    :return: a tuple of (send stream, receive stream)
+
+    """
+    if max_buffer_size != math.inf and not isinstance(max_buffer_size, int):
+        raise ValueError("max_buffer_size must be either an integer or math.inf")
+    if max_buffer_size < 0:
+        raise ValueError("max_buffer_size cannot be negative")
+
+    state: MemoryObjectStreamState = MemoryObjectStreamState(max_buffer_size)
+    return MemoryObjectSendStream(state), MemoryObjectReceiveStream(state)

Backend/venv/lib/python3.12/site-packages/anyio/_core/_subprocesses.py

@@ -0,0 +1,135 @@
+from __future__ import annotations
+
+from io import BytesIO
+from os import PathLike
+from subprocess import DEVNULL, PIPE, CalledProcessError, CompletedProcess
+from typing import (
+    IO,
+    Any,
+    AsyncIterable,
+    Mapping,
+    Sequence,
+    cast,
+)
+
+from ..abc import Process
+from ._eventloop import get_asynclib
+from ._tasks import create_task_group
+
+
+async def run_process(
+    command: str | bytes | Sequence[str | bytes],
+    *,
+    input: bytes | None = None,
+    stdout: int | IO[Any] | None = PIPE,
+    stderr: int | IO[Any] | None = PIPE,
+    check: bool = True,
+    cwd: str | bytes | PathLike[str] | None = None,
+    env: Mapping[str, str] | None = None,
+    start_new_session: bool = False,
+) -> CompletedProcess[bytes]:
+    """
+    Run an external command in a subprocess and wait until it completes.
+
+    .. seealso:: :func:`subprocess.run`
+
+    :param command: either a string to pass to the shell, or an iterable of strings containing the
+        executable name or path and its arguments
+    :param input: bytes passed to the standard input of the subprocess
+    :param stdout: either :data:`subprocess.PIPE` or :data:`subprocess.DEVNULL`
+    :param stderr: one of :data:`subprocess.PIPE`, :data:`subprocess.DEVNULL` or
+        :data:`subprocess.STDOUT`
+    :param check: if ``True``, raise :exc:`~subprocess.CalledProcessError` if the process
+        terminates with a return code other than 0
+    :param cwd: If not ``None``, change the working directory to this before running the command
+    :param env: if not ``None``, this mapping replaces the inherited environment variables from the
+        parent process
+    :param start_new_session: if ``true`` the setsid() system call will be made in the child
+        process prior to the execution of the subprocess. (POSIX only)
+    :return: an object representing the completed process
+    :raises ~subprocess.CalledProcessError: if ``check`` is ``True`` and the process exits with a
+        nonzero return code
+
+    """
+
+    async def drain_stream(stream: AsyncIterable[bytes], index: int) -> None:
+        buffer = BytesIO()
+        async for chunk in stream:
+            buffer.write(chunk)
+
+        stream_contents[index] = buffer.getvalue()
+
+    async with await open_process(
+        command,
+        stdin=PIPE if input else DEVNULL,
+        stdout=stdout,
+        stderr=stderr,
+        cwd=cwd,
+        env=env,
+        start_new_session=start_new_session,
+    ) as process:
+        stream_contents: list[bytes | None] = [None, None]
+        try:
+            async with create_task_group() as tg:
+                if process.stdout:
+                    tg.start_soon(drain_stream, process.stdout, 0)
+                if process.stderr:
+                    tg.start_soon(drain_stream, process.stderr, 1)
+                if process.stdin and input:
+                    await process.stdin.send(input)
+                    await process.stdin.aclose()
+
+                await process.wait()
+        except BaseException:
+            process.kill()
+            raise
+
+    output, errors = stream_contents
+    if check and process.returncode != 0:
+        raise CalledProcessError(cast(int, process.returncode), command, output, errors)
+
+    return CompletedProcess(command, cast(int, process.returncode), output, errors)
+
+
+async def open_process(
+    command: str | bytes | Sequence[str | bytes],
+    *,
+    stdin: int | IO[Any] | None = PIPE,
+    stdout: int | IO[Any] | None = PIPE,
+    stderr: int | IO[Any] | None = PIPE,
+    cwd: str | bytes | PathLike[str] | None = None,
+    env: Mapping[str, str] | None = None,
+    start_new_session: bool = False,
+) -> Process:
+    """
+    Start an external command in a subprocess.
+
+    .. seealso:: :class:`subprocess.Popen`
+
+    :param command: either a string to pass to the shell, or an iterable of strings containing the
+        executable name or path and its arguments
+    :param stdin: one of :data:`subprocess.PIPE`, :data:`subprocess.DEVNULL`, a
+        file-like object, or ``None``
+    :param stdout: one of :data:`subprocess.PIPE`, :data:`subprocess.DEVNULL`,
+        a file-like object, or ``None``
+    :param stderr: one of :data:`subprocess.PIPE`, :data:`subprocess.DEVNULL`,
+        :data:`subprocess.STDOUT`, a file-like object, or ``None``
+    :param cwd: If not ``None``, the working directory is changed before executing
+    :param env: If env is not ``None``, it must be a mapping that defines the environment
+        variables for the new process
+    :param start_new_session: if ``true`` the setsid() system call will be made in the child
+        process prior to the execution of the subprocess. (POSIX only)
+    :return: an asynchronous process object
+
+    """
+    shell = isinstance(command, str)
+    return await get_asynclib().open_process(
+        command,
+        shell=shell,
+        stdin=stdin,
+        stdout=stdout,
+        stderr=stderr,
+        cwd=cwd,
+        env=env,
+        start_new_session=start_new_session,
+    )

Backend/venv/lib/python3.12/site-packages/anyio/_core/_synchronization.py

@@ -0,0 +1,596 @@
+from __future__ import annotations
+
+from collections import deque
+from dataclasses import dataclass
+from types import TracebackType
+from warnings import warn
+
+from ..lowlevel import cancel_shielded_checkpoint, checkpoint, checkpoint_if_cancelled
+from ._compat import DeprecatedAwaitable
+from ._eventloop import get_asynclib
+from ._exceptions import BusyResourceError, WouldBlock
+from ._tasks import CancelScope
+from ._testing import TaskInfo, get_current_task
+
+
+@dataclass(frozen=True)
+class EventStatistics:
+    """
+    :ivar int tasks_waiting: number of tasks waiting on :meth:`~.Event.wait`
+    """
+
+    tasks_waiting: int
+
+
+@dataclass(frozen=True)
+class CapacityLimiterStatistics:
+    """
+    :ivar int borrowed_tokens: number of tokens currently borrowed by tasks
+    :ivar float total_tokens: total number of available tokens
+    :ivar tuple borrowers: tasks or other objects currently holding tokens borrowed from this
+        limiter
+    :ivar int tasks_waiting: number of tasks waiting on :meth:`~.CapacityLimiter.acquire` or
+        :meth:`~.CapacityLimiter.acquire_on_behalf_of`
+    """
+
+    borrowed_tokens: int
+    total_tokens: float
+    borrowers: tuple[object, ...]
+    tasks_waiting: int
+
+
+@dataclass(frozen=True)
+class LockStatistics:
+    """
+    :ivar bool locked: flag indicating if this lock is locked or not
+    :ivar ~anyio.TaskInfo owner: task currently holding the lock (or ``None`` if the lock is not
+        held by any task)
+    :ivar int tasks_waiting: number of tasks waiting on :meth:`~.Lock.acquire`
+    """
+
+    locked: bool
+    owner: TaskInfo | None
+    tasks_waiting: int
+
+
+@dataclass(frozen=True)
+class ConditionStatistics:
+    """
+    :ivar int tasks_waiting: number of tasks blocked on :meth:`~.Condition.wait`
+    :ivar ~anyio.LockStatistics lock_statistics: statistics of the underlying :class:`~.Lock`
+    """
+
+    tasks_waiting: int
+    lock_statistics: LockStatistics
+
+
+@dataclass(frozen=True)
+class SemaphoreStatistics:
+    """
+    :ivar int tasks_waiting: number of tasks waiting on :meth:`~.Semaphore.acquire`
+
+    """
+
+    tasks_waiting: int
+
+
+class Event:
+    def __new__(cls) -> Event:
+        return get_asynclib().Event()
+
+    def set(self) -> DeprecatedAwaitable:
+        """Set the flag, notifying all listeners."""
+        raise NotImplementedError
+
+    def is_set(self) -> bool:
+        """Return ``True`` if the flag is set, ``False`` if not."""
+        raise NotImplementedError
+
+    async def wait(self) -> None:
+        """
+        Wait until the flag has been set.
+
+        If the flag has already been set when this method is called, it returns immediately.
+
+        """
+        raise NotImplementedError
+
+    def statistics(self) -> EventStatistics:
+        """Return statistics about the current state of this event."""
+        raise NotImplementedError
+
+
+class Lock:
+    _owner_task: TaskInfo | None = None
+
+    def __init__(self) -> None:
+        self._waiters: deque[tuple[TaskInfo, Event]] = deque()
+
+    async def __aenter__(self) -> None:
+        await self.acquire()
+
+    async def __aexit__(
+        self,
+        exc_type: type[BaseException] | None,
+        exc_val: BaseException | None,
+        exc_tb: TracebackType | None,
+    ) -> None:
+        self.release()
+
+    async def acquire(self) -> None:
+        """Acquire the lock."""
+        await checkpoint_if_cancelled()
+        try:
+            self.acquire_nowait()
+        except WouldBlock:
+            task = get_current_task()
+            event = Event()
+            token = task, event
+            self._waiters.append(token)
+            try:
+                await event.wait()
+            except BaseException:
+                if not event.is_set():
+                    self._waiters.remove(token)
+                elif self._owner_task == task:
+                    self.release()
+
+                raise
+
+            assert self._owner_task == task
+        else:
+            try:
+                await cancel_shielded_checkpoint()
+            except BaseException:
+                self.release()
+                raise
+
+    def acquire_nowait(self) -> None:
+        """
+        Acquire the lock, without blocking.
+
+        :raises ~anyio.WouldBlock: if the operation would block
+
+        """
+        task = get_current_task()
+        if self._owner_task == task:
+            raise RuntimeError("Attempted to acquire an already held Lock")
+
+        if self._owner_task is not None:
+            raise WouldBlock
+
+        self._owner_task = task
+
+    def release(self) -> DeprecatedAwaitable:
+        """Release the lock."""
+        if self._owner_task != get_current_task():
+            raise RuntimeError("The current task is not holding this lock")
+
+        if self._waiters:
+            self._owner_task, event = self._waiters.popleft()
+            event.set()
+        else:
+            del self._owner_task
+
+        return DeprecatedAwaitable(self.release)
+
+    def locked(self) -> bool:
+        """Return True if the lock is currently held."""
+        return self._owner_task is not None
+
+    def statistics(self) -> LockStatistics:
+        """
+        Return statistics about the current state of this lock.
+
+        .. versionadded:: 3.0
+        """
+        return LockStatistics(self.locked(), self._owner_task, len(self._waiters))
+
+
+class Condition:
+    _owner_task: TaskInfo | None = None
+
+    def __init__(self, lock: Lock | None = None):
+        self._lock = lock or Lock()
+        self._waiters: deque[Event] = deque()
+
+    async def __aenter__(self) -> None:
+        await self.acquire()
+
+    async def __aexit__(
+        self,
+        exc_type: type[BaseException] | None,
+        exc_val: BaseException | None,
+        exc_tb: TracebackType | None,
+    ) -> None:
+        self.release()
+
+    def _check_acquired(self) -> None:
+        if self._owner_task != get_current_task():
+            raise RuntimeError("The current task is not holding the underlying lock")
+
+    async def acquire(self) -> None:
+        """Acquire the underlying lock."""
+        await self._lock.acquire()
+        self._owner_task = get_current_task()
+
+    def acquire_nowait(self) -> None:
+        """
+        Acquire the underlying lock, without blocking.
+
+        :raises ~anyio.WouldBlock: if the operation would block
+
+        """
+        self._lock.acquire_nowait()
+        self._owner_task = get_current_task()
+
+    def release(self) -> DeprecatedAwaitable:
+        """Release the underlying lock."""
+        self._lock.release()
+        return DeprecatedAwaitable(self.release)
+
+    def locked(self) -> bool:
+        """Return True if the lock is set."""
+        return self._lock.locked()
+
+    def notify(self, n: int = 1) -> None:
+        """Notify exactly n listeners."""
+        self._check_acquired()
+        for _ in range(n):
+            try:
+                event = self._waiters.popleft()
+            except IndexError:
+                break
+
+            event.set()
+
+    def notify_all(self) -> None:
+        """Notify all the listeners."""
+        self._check_acquired()
+        for event in self._waiters:
+            event.set()
+
+        self._waiters.clear()
+
+    async def wait(self) -> None:
+        """Wait for a notification."""
+        await checkpoint()
+        event = Event()
+        self._waiters.append(event)
+        self.release()
+        try:
+            await event.wait()
+        except BaseException:
+            if not event.is_set():
+                self._waiters.remove(event)
+
+            raise
+        finally:
+            with CancelScope(shield=True):
+                await self.acquire()
+
+    def statistics(self) -> ConditionStatistics:
+        """
+        Return statistics about the current state of this condition.
+
+        .. versionadded:: 3.0
+        """
+        return ConditionStatistics(len(self._waiters), self._lock.statistics())
+
+
+class Semaphore:
+    def __init__(self, initial_value: int, *, max_value: int | None = None):
+        if not isinstance(initial_value, int):
+            raise TypeError("initial_value must be an integer")
+        if initial_value < 0:
+            raise ValueError("initial_value must be >= 0")
+        if max_value is not None:
+            if not isinstance(max_value, int):
+                raise TypeError("max_value must be an integer or None")
+            if max_value < initial_value:
+                raise ValueError(
+                    "max_value must be equal to or higher than initial_value"
+                )
+
+        self._value = initial_value
+        self._max_value = max_value
+        self._waiters: deque[Event] = deque()
+
+    async def __aenter__(self) -> Semaphore:
+        await self.acquire()
+        return self
+
+    async def __aexit__(
+        self,
+        exc_type: type[BaseException] | None,
+        exc_val: BaseException | None,
+        exc_tb: TracebackType | None,
+    ) -> None:
+        self.release()
+
+    async def acquire(self) -> None:
+        """Decrement the semaphore value, blocking if necessary."""
+        await checkpoint_if_cancelled()
+        try:
+            self.acquire_nowait()
+        except WouldBlock:
+            event = Event()
+            self._waiters.append(event)
+            try:
+                await event.wait()
+            except BaseException:
+                if not event.is_set():
+                    self._waiters.remove(event)
+                else:
+                    self.release()
+
+                raise
+        else:
+            try:
+                await cancel_shielded_checkpoint()
+            except BaseException:
+                self.release()
+                raise
+
+    def acquire_nowait(self) -> None:
+        """
+        Acquire the underlying lock, without blocking.
+
+        :raises ~anyio.WouldBlock: if the operation would block
+
+        """
+        if self._value == 0:
+            raise WouldBlock
+
+        self._value -= 1
+
+    def release(self) -> DeprecatedAwaitable:
+        """Increment the semaphore value."""
+        if self._max_value is not None and self._value == self._max_value:
+            raise ValueError("semaphore released too many times")
+
+        if self._waiters:
+            self._waiters.popleft().set()
+        else:
+            self._value += 1
+
+        return DeprecatedAwaitable(self.release)
+
+    @property
+    def value(self) -> int:
+        """The current value of the semaphore."""
+        return self._value
+
+    @property
+    def max_value(self) -> int | None:
+        """The maximum value of the semaphore."""
+        return self._max_value
+
+    def statistics(self) -> SemaphoreStatistics:
+        """
+        Return statistics about the current state of this semaphore.
+
+        .. versionadded:: 3.0
+        """
+        return SemaphoreStatistics(len(self._waiters))
+
+
+class CapacityLimiter:
+    def __new__(cls, total_tokens: float) -> CapacityLimiter:
+        return get_asynclib().CapacityLimiter(total_tokens)
+
+    async def __aenter__(self) -> None:
+        raise NotImplementedError
+
+    async def __aexit__(
+        self,
+        exc_type: type[BaseException] | None,
+        exc_val: BaseException | None,
+        exc_tb: TracebackType | None,
+    ) -> bool | None:
+        raise NotImplementedError
+
+    @property
+    def total_tokens(self) -> float:
+        """
+        The total number of tokens available for borrowing.
+
+        This is a read-write property. If the total number of tokens is increased, the
+        proportionate number of tasks waiting on this limiter will be granted their tokens.
+
+        .. versionchanged:: 3.0
+            The property is now writable.
+
+        """
+        raise NotImplementedError
+
+    @total_tokens.setter
+    def total_tokens(self, value: float) -> None:
+        raise NotImplementedError
+
+    async def set_total_tokens(self, value: float) -> None:
+        warn(
+            "CapacityLimiter.set_total_tokens has been deprecated. Set the value of the"
+            '"total_tokens" attribute directly.',
+            DeprecationWarning,
+        )
+        self.total_tokens = value
+
+    @property
+    def borrowed_tokens(self) -> int:
+        """The number of tokens that have currently been borrowed."""
+        raise NotImplementedError
+
+    @property
+    def available_tokens(self) -> float:
+        """The number of tokens currently available to be borrowed"""
+        raise NotImplementedError
+
+    def acquire_nowait(self) -> DeprecatedAwaitable:
+        """
+        Acquire a token for the current task without waiting for one to become available.
+
+        :raises ~anyio.WouldBlock: if there are no tokens available for borrowing
+
+        """
+        raise NotImplementedError
+
+    def acquire_on_behalf_of_nowait(self, borrower: object) -> DeprecatedAwaitable:
+        """
+        Acquire a token without waiting for one to become available.
+
+        :param borrower: the entity borrowing a token
+        :raises ~anyio.WouldBlock: if there are no tokens available for borrowing
+
+        """
+        raise NotImplementedError
+
+    async def acquire(self) -> None:
+        """
+        Acquire a token for the current task, waiting if necessary for one to become available.
+
+        """
+        raise NotImplementedError
+
+    async def acquire_on_behalf_of(self, borrower: object) -> None:
+        """
+        Acquire a token, waiting if necessary for one to become available.
+
+        :param borrower: the entity borrowing a token
+
+        """
+        raise NotImplementedError
+
+    def release(self) -> None:
+        """
+        Release the token held by the current task.
+        :raises RuntimeError: if the current task has not borrowed a token from this limiter.
+
+        """
+        raise NotImplementedError
+
+    def release_on_behalf_of(self, borrower: object) -> None:
+        """
+        Release the token held by the given borrower.
+
+        :raises RuntimeError: if the borrower has not borrowed a token from this limiter.
+
+        """
+        raise NotImplementedError
+
+    def statistics(self) -> CapacityLimiterStatistics:
+        """
+        Return statistics about the current state of this limiter.
+
+        .. versionadded:: 3.0
+
+        """
+        raise NotImplementedError
+
+
+def create_lock() -> Lock:
+    """
+    Create an asynchronous lock.
+
+    :return: a lock object
+
+    .. deprecated:: 3.0
+       Use :class:`~Lock` directly.
+
+    """
+    warn("create_lock() is deprecated -- use Lock() directly", DeprecationWarning)
+    return Lock()
+
+
+def create_condition(lock: Lock | None = None) -> Condition:
+    """
+    Create an asynchronous condition.
+
+    :param lock: the lock to base the condition object on
+    :return: a condition object
+
+    .. deprecated:: 3.0
+       Use :class:`~Condition` directly.
+
+    """
+    warn(
+        "create_condition() is deprecated -- use Condition() directly",
+        DeprecationWarning,
+    )
+    return Condition(lock=lock)
+
+
+def create_event() -> Event:
+    """
+    Create an asynchronous event object.
+
+    :return: an event object
+
+    .. deprecated:: 3.0
+       Use :class:`~Event` directly.
+
+    """
+    warn("create_event() is deprecated -- use Event() directly", DeprecationWarning)
+    return get_asynclib().Event()
+
+
+def create_semaphore(value: int, *, max_value: int | None = None) -> Semaphore:
+    """
+    Create an asynchronous semaphore.
+
+    :param value: the semaphore's initial value
+    :param max_value: if set, makes this a "bounded" semaphore that raises :exc:`ValueError` if the
+        semaphore's value would exceed this number
+    :return: a semaphore object
+
+    .. deprecated:: 3.0
+       Use :class:`~Semaphore` directly.
+
+    """
+    warn(
+        "create_semaphore() is deprecated -- use Semaphore() directly",
+        DeprecationWarning,
+    )
+    return Semaphore(value, max_value=max_value)
+
+
+def create_capacity_limiter(total_tokens: float) -> CapacityLimiter:
+    """
+    Create a capacity limiter.
+
+    :param total_tokens: the total number of tokens available for borrowing (can be an integer or
+        :data:`math.inf`)
+    :return: a capacity limiter object
+
+    .. deprecated:: 3.0
+       Use :class:`~CapacityLimiter` directly.
+
+    """
+    warn(
+        "create_capacity_limiter() is deprecated -- use CapacityLimiter() directly",
+        DeprecationWarning,
+    )
+    return get_asynclib().CapacityLimiter(total_tokens)
+
+
+class ResourceGuard:
+    __slots__ = "action", "_guarded"
+
+    def __init__(self, action: str):
+        self.action = action
+        self._guarded = False
+
+    def __enter__(self) -> None:
+        if self._guarded:
+            raise BusyResourceError(self.action)
+
+        self._guarded = True
+
+    def __exit__(
+        self,
+        exc_type: type[BaseException] | None,
+        exc_val: BaseException | None,
+        exc_tb: TracebackType | None,
+    ) -> bool | None:
+        self._guarded = False
+        return None

Backend/venv/lib/python3.12/site-packages/anyio/_core/_tasks.py

@@ -0,0 +1,180 @@
+from __future__ import annotations
+
+import math
+from types import TracebackType
+from warnings import warn
+
+from ..abc._tasks import TaskGroup, TaskStatus
+from ._compat import (
+    DeprecatedAsyncContextManager,
+    DeprecatedAwaitable,
+    DeprecatedAwaitableFloat,
+)
+from ._eventloop import get_asynclib
+
+
+class _IgnoredTaskStatus(TaskStatus[object]):
+    def started(self, value: object = None) -> None:
+        pass
+
+
+TASK_STATUS_IGNORED = _IgnoredTaskStatus()
+
+
+class CancelScope(DeprecatedAsyncContextManager["CancelScope"]):
+    """
+    Wraps a unit of work that can be made separately cancellable.
+
+    :param deadline: The time (clock value) when this scope is cancelled automatically
+    :param shield: ``True`` to shield the cancel scope from external cancellation
+    """
+
+    def __new__(
+        cls, *, deadline: float = math.inf, shield: bool = False
+    ) -> CancelScope:
+        return get_asynclib().CancelScope(shield=shield, deadline=deadline)
+
+    def cancel(self) -> DeprecatedAwaitable:
+        """Cancel this scope immediately."""
+        raise NotImplementedError
+
+    @property
+    def deadline(self) -> float:
+        """
+        The time (clock value) when this scope is cancelled automatically.
+
+        Will be ``float('inf')`` if no timeout has been set.
+
+        """
+        raise NotImplementedError
+
+    @deadline.setter
+    def deadline(self, value: float) -> None:
+        raise NotImplementedError
+
+    @property
+    def cancel_called(self) -> bool:
+        """``True`` if :meth:`cancel` has been called."""
+        raise NotImplementedError
+
+    @property
+    def shield(self) -> bool:
+        """
+        ``True`` if this scope is shielded from external cancellation.
+
+        While a scope is shielded, it will not receive cancellations from outside.
+
+        """
+        raise NotImplementedError
+
+    @shield.setter
+    def shield(self, value: bool) -> None:
+        raise NotImplementedError
+
+    def __enter__(self) -> CancelScope:
+        raise NotImplementedError
+
+    def __exit__(
+        self,
+        exc_type: type[BaseException] | None,
+        exc_val: BaseException | None,
+        exc_tb: TracebackType | None,
+    ) -> bool | None:
+        raise NotImplementedError
+
+
+def open_cancel_scope(*, shield: bool = False) -> CancelScope:
+    """
+    Open a cancel scope.
+
+    :param shield: ``True`` to shield the cancel scope from external cancellation
+    :return: a cancel scope
+
+    .. deprecated:: 3.0
+       Use :class:`~CancelScope` directly.
+
+    """
+    warn(
+        "open_cancel_scope() is deprecated -- use CancelScope() directly",
+        DeprecationWarning,
+    )
+    return get_asynclib().CancelScope(shield=shield)
+
+
+class FailAfterContextManager(DeprecatedAsyncContextManager[CancelScope]):
+    def __init__(self, cancel_scope: CancelScope):
+        self._cancel_scope = cancel_scope
+
+    def __enter__(self) -> CancelScope:
+        return self._cancel_scope.__enter__()
+
+    def __exit__(
+        self,
+        exc_type: type[BaseException] | None,
+        exc_val: BaseException | None,
+        exc_tb: TracebackType | None,
+    ) -> bool | None:
+        retval = self._cancel_scope.__exit__(exc_type, exc_val, exc_tb)
+        if self._cancel_scope.cancel_called:
+            raise TimeoutError
+
+        return retval
+
+
+def fail_after(delay: float | None, shield: bool = False) -> FailAfterContextManager:
+    """
+    Create a context manager which raises a :class:`TimeoutError` if does not finish in time.
+
+    :param delay: maximum allowed time (in seconds) before raising the exception, or ``None`` to
+        disable the timeout
+    :param shield: ``True`` to shield the cancel scope from external cancellation
+    :return: a context manager that yields a cancel scope
+    :rtype: :class:`~typing.ContextManager`\\[:class:`~anyio.CancelScope`\\]
+
+    """
+    deadline = (
+        (get_asynclib().current_time() + delay) if delay is not None else math.inf
+    )
+    cancel_scope = get_asynclib().CancelScope(deadline=deadline, shield=shield)
+    return FailAfterContextManager(cancel_scope)
+
+
+def move_on_after(delay: float | None, shield: bool = False) -> CancelScope:
+    """
+    Create a cancel scope with a deadline that expires after the given delay.
+
+    :param delay: maximum allowed time (in seconds) before exiting the context block, or ``None``
+        to disable the timeout
+    :param shield: ``True`` to shield the cancel scope from external cancellation
+    :return: a cancel scope
+
+    """
+    deadline = (
+        (get_asynclib().current_time() + delay) if delay is not None else math.inf
+    )
+    return get_asynclib().CancelScope(deadline=deadline, shield=shield)
+
+
+def current_effective_deadline() -> DeprecatedAwaitableFloat:
+    """
+    Return the nearest deadline among all the cancel scopes effective for the current task.
+
+    :return: a clock value from the event loop's internal clock (or ``float('inf')`` if
+        there is no deadline in effect, or ``float('-inf')`` if the current scope has
+        been cancelled)
+    :rtype: float
+
+    """
+    return DeprecatedAwaitableFloat(
+        get_asynclib().current_effective_deadline(), current_effective_deadline
+    )
+
+
+def create_task_group() -> TaskGroup:
+    """
+    Create a task group.
+
+    :return: a task group
+
+    """
+    return get_asynclib().TaskGroup()

Backend/venv/lib/python3.12/site-packages/anyio/_core/_testing.py

@@ -0,0 +1,82 @@
+from __future__ import annotations
+
+from typing import Any, Awaitable, Generator
+
+from ._compat import DeprecatedAwaitableList, _warn_deprecation
+from ._eventloop import get_asynclib
+
+
+class TaskInfo:
+    """
+    Represents an asynchronous task.
+
+    :ivar int id: the unique identifier of the task
+    :ivar parent_id: the identifier of the parent task, if any
+    :vartype parent_id: Optional[int]
+    :ivar str name: the description of the task (if any)
+    :ivar ~collections.abc.Coroutine coro: the coroutine object of the task
+    """
+
+    __slots__ = "_name", "id", "parent_id", "name", "coro"
+
+    def __init__(
+        self,
+        id: int,
+        parent_id: int | None,
+        name: str | None,
+        coro: Generator[Any, Any, Any] | Awaitable[Any],
+    ):
+        func = get_current_task
+        self._name = f"{func.__module__}.{func.__qualname__}"
+        self.id: int = id
+        self.parent_id: int | None = parent_id
+        self.name: str | None = name
+        self.coro: Generator[Any, Any, Any] | Awaitable[Any] = coro
+
+    def __eq__(self, other: object) -> bool:
+        if isinstance(other, TaskInfo):
+            return self.id == other.id
+
+        return NotImplemented
+
+    def __hash__(self) -> int:
+        return hash(self.id)
+
+    def __repr__(self) -> str:
+        return f"{self.__class__.__name__}(id={self.id!r}, name={self.name!r})"
+
+    def __await__(self) -> Generator[None, None, TaskInfo]:
+        _warn_deprecation(self)
+        if False:
+            yield
+
+        return self
+
+    def _unwrap(self) -> TaskInfo:
+        return self
+
+
+def get_current_task() -> TaskInfo:
+    """
+    Return the current task.
+
+    :return: a representation of the current task
+
+    """
+    return get_asynclib().get_current_task()
+
+
+def get_running_tasks() -> DeprecatedAwaitableList[TaskInfo]:
+    """
+    Return a list of running tasks in the current event loop.
+
+    :return: a list of task info objects
+
+    """
+    tasks = get_asynclib().get_running_tasks()
+    return DeprecatedAwaitableList(tasks, func=get_running_tasks)
+
+
+async def wait_all_tasks_blocked() -> None:
+    """Wait until all other tasks are waiting for something."""
+    await get_asynclib().wait_all_tasks_blocked()

Backend/venv/lib/python3.12/site-packages/anyio/_core/_typedattr.py

@@ -0,0 +1,83 @@
+from __future__ import annotations
+
+import sys
+from typing import Any, Callable, Mapping, TypeVar, overload
+
+from ._exceptions import TypedAttributeLookupError
+
+if sys.version_info >= (3, 8):
+    from typing import final
+else:
+    from typing_extensions import final
+
+T_Attr = TypeVar("T_Attr")
+T_Default = TypeVar("T_Default")
+undefined = object()
+
+
+def typed_attribute() -> Any:
+    """Return a unique object, used to mark typed attributes."""
+    return object()
+
+
+class TypedAttributeSet:
+    """
+    Superclass for typed attribute collections.
+
+    Checks that every public attribute of every subclass has a type annotation.
+    """
+
+    def __init_subclass__(cls) -> None:
+        annotations: dict[str, Any] = getattr(cls, "__annotations__", {})
+        for attrname in dir(cls):
+            if not attrname.startswith("_") and attrname not in annotations:
+                raise TypeError(
+                    f"Attribute {attrname!r} is missing its type annotation"
+                )
+
+        super().__init_subclass__()
+
+
+class TypedAttributeProvider:
+    """Base class for classes that wish to provide typed extra attributes."""
+
+    @property
+    def extra_attributes(self) -> Mapping[T_Attr, Callable[[], T_Attr]]:
+        """
+        A mapping of the extra attributes to callables that return the corresponding values.
+
+        If the provider wraps another provider, the attributes from that wrapper should also be
+        included in the returned mapping (but the wrapper may override the callables from the
+        wrapped instance).
+
+        """
+        return {}
+
+    @overload
+    def extra(self, attribute: T_Attr) -> T_Attr:
+        ...
+
+    @overload
+    def extra(self, attribute: T_Attr, default: T_Default) -> T_Attr | T_Default:
+        ...
+
+    @final
+    def extra(self, attribute: Any, default: object = undefined) -> object:
+        """
+        extra(attribute, default=undefined)
+
+        Return the value of the given typed extra attribute.
+
+        :param attribute: the attribute (member of a :class:`~TypedAttributeSet`) to look for
+        :param default: the value that should be returned if no value is found for the attribute
+        :raises ~anyio.TypedAttributeLookupError: if the search failed and no default value was
+            given
+
+        """
+        try:
+            return self.extra_attributes[attribute]()
+        except KeyError:
+            if default is undefined:
+                raise TypedAttributeLookupError("Attribute not found") from None
+            else:
+                return default

Backend/venv/lib/python3.12/site-packages/anyio/abc/__init__.py

@@ -0,0 +1,90 @@
+from __future__ import annotations
+
+__all__ = (
+    "AsyncResource",
+    "IPAddressType",
+    "IPSockAddrType",
+    "SocketAttribute",
+    "SocketStream",
+    "SocketListener",
+    "UDPSocket",
+    "UNIXSocketStream",
+    "UDPPacketType",
+    "ConnectedUDPSocket",
+    "UnreliableObjectReceiveStream",
+    "UnreliableObjectSendStream",
+    "UnreliableObjectStream",
+    "ObjectReceiveStream",
+    "ObjectSendStream",
+    "ObjectStream",
+    "ByteReceiveStream",
+    "ByteSendStream",
+    "ByteStream",
+    "AnyUnreliableByteReceiveStream",
+    "AnyUnreliableByteSendStream",
+    "AnyUnreliableByteStream",
+    "AnyByteReceiveStream",
+    "AnyByteSendStream",
+    "AnyByteStream",
+    "Listener",
+    "Process",
+    "Event",
+    "Condition",
+    "Lock",
+    "Semaphore",
+    "CapacityLimiter",
+    "CancelScope",
+    "TaskGroup",
+    "TaskStatus",
+    "TestRunner",
+    "BlockingPortal",
+)
+
+from typing import Any
+
+from ._resources import AsyncResource
+from ._sockets import (
+    ConnectedUDPSocket,
+    IPAddressType,
+    IPSockAddrType,
+    SocketAttribute,
+    SocketListener,
+    SocketStream,
+    UDPPacketType,
+    UDPSocket,
+    UNIXSocketStream,
+)
+from ._streams import (
+    AnyByteReceiveStream,
+    AnyByteSendStream,
+    AnyByteStream,
+    AnyUnreliableByteReceiveStream,
+    AnyUnreliableByteSendStream,
+    AnyUnreliableByteStream,
+    ByteReceiveStream,
+    ByteSendStream,
+    ByteStream,
+    Listener,
+    ObjectReceiveStream,
+    ObjectSendStream,
+    ObjectStream,
+    UnreliableObjectReceiveStream,
+    UnreliableObjectSendStream,
+    UnreliableObjectStream,
+)
+from ._subprocesses import Process
+from ._tasks import TaskGroup, TaskStatus
+from ._testing import TestRunner
+
+# Re-exported here, for backwards compatibility
+# isort: off
+from .._core._synchronization import CapacityLimiter, Condition, Event, Lock, Semaphore
+from .._core._tasks import CancelScope
+from ..from_thread import BlockingPortal
+
+# Re-export imports so they look like they live directly in this package
+key: str
+value: Any
+for key, value in list(locals().items()):
+    if getattr(value, "__module__", "").startswith("anyio.abc."):
+        value.__module__ = __name__

Backend/venv/lib/python3.12/site-packages/anyio/abc/_resources.py

@@ -0,0 +1,31 @@
+from __future__ import annotations
+
+from abc import ABCMeta, abstractmethod
+from types import TracebackType
+from typing import TypeVar
+
+T = TypeVar("T")
+
+
+class AsyncResource(metaclass=ABCMeta):
+    """
+    Abstract base class for all closeable asynchronous resources.
+
+    Works as an asynchronous context manager which returns the instance itself on enter, and calls
+    :meth:`aclose` on exit.
+    """
+
+    async def __aenter__(self: T) -> T:
+        return self
+
+    async def __aexit__(
+        self,
+        exc_type: type[BaseException] | None,
+        exc_val: BaseException | None,
+        exc_tb: TracebackType | None,
+    ) -> None:
+        await self.aclose()
+
+    @abstractmethod
+    async def aclose(self) -> None:
+        """Close the resource."""

Backend/venv/lib/python3.12/site-packages/anyio/abc/_sockets.py

@@ -0,0 +1,160 @@
+from __future__ import annotations
+
+import socket
+from abc import abstractmethod
+from contextlib import AsyncExitStack
+from io import IOBase
+from ipaddress import IPv4Address, IPv6Address
+from socket import AddressFamily
+from typing import (
+    Any,
+    Callable,
+    Collection,
+    Mapping,
+    Tuple,
+    TypeVar,
+    Union,
+)
+
+from .._core._tasks import create_task_group
+from .._core._typedattr import (
+    TypedAttributeProvider,
+    TypedAttributeSet,
+    typed_attribute,
+)
+from ._streams import ByteStream, Listener, UnreliableObjectStream
+from ._tasks import TaskGroup
+
+IPAddressType = Union[str, IPv4Address, IPv6Address]
+IPSockAddrType = Tuple[str, int]
+SockAddrType = Union[IPSockAddrType, str]
+UDPPacketType = Tuple[bytes, IPSockAddrType]
+T_Retval = TypeVar("T_Retval")
+
+
+class SocketAttribute(TypedAttributeSet):
+    #: the address family of the underlying socket
+    family: AddressFamily = typed_attribute()
+    #: the local socket address of the underlying socket
+    local_address: SockAddrType = typed_attribute()
+    #: for IP addresses, the local port the underlying socket is bound to
+    local_port: int = typed_attribute()
+    #: the underlying stdlib socket object
+    raw_socket: socket.socket = typed_attribute()
+    #: the remote address the underlying socket is connected to
+    remote_address: SockAddrType = typed_attribute()
+    #: for IP addresses, the remote port the underlying socket is connected to
+    remote_port: int = typed_attribute()
+
+
+class _SocketProvider(TypedAttributeProvider):
+    @property
+    def extra_attributes(self) -> Mapping[Any, Callable[[], Any]]:
+        from .._core._sockets import convert_ipv6_sockaddr as convert
+
+        attributes: dict[Any, Callable[[], Any]] = {
+            SocketAttribute.family: lambda: self._raw_socket.family,
+            SocketAttribute.local_address: lambda: convert(
+                self._raw_socket.getsockname()
+            ),
+            SocketAttribute.raw_socket: lambda: self._raw_socket,
+        }
+        try:
+            peername: tuple[str, int] | None = convert(self._raw_socket.getpeername())
+        except OSError:
+            peername = None
+
+        # Provide the remote address for connected sockets
+        if peername is not None:
+            attributes[SocketAttribute.remote_address] = lambda: peername
+
+        # Provide local and remote ports for IP based sockets
+        if self._raw_socket.family in (AddressFamily.AF_INET, AddressFamily.AF_INET6):
+            attributes[
+                SocketAttribute.local_port
+            ] = lambda: self._raw_socket.getsockname()[1]
+            if peername is not None:
+                remote_port = peername[1]
+                attributes[SocketAttribute.remote_port] = lambda: remote_port
+
+        return attributes
+
+    @property
+    @abstractmethod
+    def _raw_socket(self) -> socket.socket:
+        pass
+
+
+class SocketStream(ByteStream, _SocketProvider):
+    """
+    Transports bytes over a socket.
+
+    Supports all relevant extra attributes from :class:`~SocketAttribute`.
+    """
+
+
+class UNIXSocketStream(SocketStream):
+    @abstractmethod
+    async def send_fds(self, message: bytes, fds: Collection[int | IOBase]) -> None:
+        """
+        Send file descriptors along with a message to the peer.
+
+        :param message: a non-empty bytestring
+        :param fds: a collection of files (either numeric file descriptors or open file or socket
+            objects)
+        """
+
+    @abstractmethod
+    async def receive_fds(self, msglen: int, maxfds: int) -> tuple[bytes, list[int]]:
+        """
+        Receive file descriptors along with a message from the peer.
+
+        :param msglen: length of the message to expect from the peer
+        :param maxfds: maximum number of file descriptors to expect from the peer
+        :return: a tuple of (message, file descriptors)
+        """
+
+
+class SocketListener(Listener[SocketStream], _SocketProvider):
+    """
+    Listens to incoming socket connections.
+
+    Supports all relevant extra attributes from :class:`~SocketAttribute`.
+    """
+
+    @abstractmethod
+    async def accept(self) -> SocketStream:
+        """Accept an incoming connection."""
+
+    async def serve(
+        self,
+        handler: Callable[[SocketStream], Any],
+        task_group: TaskGroup | None = None,
+    ) -> None:
+        async with AsyncExitStack() as exit_stack:
+            if task_group is None:
+                task_group = await exit_stack.enter_async_context(create_task_group())
+
+            while True:
+                stream = await self.accept()
+                task_group.start_soon(handler, stream)
+
+
+class UDPSocket(UnreliableObjectStream[UDPPacketType], _SocketProvider):
+    """
+    Represents an unconnected UDP socket.
+
+    Supports all relevant extra attributes from :class:`~SocketAttribute`.
+    """
+
+    async def sendto(self, data: bytes, host: str, port: int) -> None:
+        """Alias for :meth:`~.UnreliableObjectSendStream.send` ((data, (host, port)))."""
+        return await self.send((data, (host, port)))
+
+
+class ConnectedUDPSocket(UnreliableObjectStream[bytes], _SocketProvider):
+    """
+    Represents an connected UDP socket.
+
+    Supports all relevant extra attributes from :class:`~SocketAttribute`.
+    """

Backend/venv/lib/python3.12/site-packages/anyio/abc/_streams.py

@@ -0,0 +1,203 @@
+from __future__ import annotations
+
+from abc import abstractmethod
+from typing import Any, Callable, Generic, TypeVar, Union
+
+from .._core._exceptions import EndOfStream
+from .._core._typedattr import TypedAttributeProvider
+from ._resources import AsyncResource
+from ._tasks import TaskGroup
+
+T_Item = TypeVar("T_Item")
+T_co = TypeVar("T_co", covariant=True)
+T_contra = TypeVar("T_contra", contravariant=True)
+
+
+class UnreliableObjectReceiveStream(
+    Generic[T_co], AsyncResource, TypedAttributeProvider
+):
+    """
+    An interface for receiving objects.
+
+    This interface makes no guarantees that the received messages arrive in the order in which they
+    were sent, or that no messages are missed.
+
+    Asynchronously iterating over objects of this type will yield objects matching the given type
+    parameter.
+    """
+
+    def __aiter__(self) -> UnreliableObjectReceiveStream[T_co]:
+        return self
+
+    async def __anext__(self) -> T_co:
+        try:
+            return await self.receive()
+        except EndOfStream:
+            raise StopAsyncIteration
+
+    @abstractmethod
+    async def receive(self) -> T_co:
+        """
+        Receive the next item.
+
+        :raises ~anyio.ClosedResourceError: if the receive stream has been explicitly
+            closed
+        :raises ~anyio.EndOfStream: if this stream has been closed from the other end
+        :raises ~anyio.BrokenResourceError: if this stream has been rendered unusable
+            due to external causes
+        """
+
+
+class UnreliableObjectSendStream(
+    Generic[T_contra], AsyncResource, TypedAttributeProvider
+):
+    """
+    An interface for sending objects.
+
+    This interface makes no guarantees that the messages sent will reach the recipient(s) in the
+    same order in which they were sent, or at all.
+    """
+
+    @abstractmethod
+    async def send(self, item: T_contra) -> None:
+        """
+        Send an item to the peer(s).
+
+        :param item: the item to send
+        :raises ~anyio.ClosedResourceError: if the send stream has been explicitly
+            closed
+        :raises ~anyio.BrokenResourceError: if this stream has been rendered unusable
+            due to external causes
+        """
+
+
+class UnreliableObjectStream(
+    UnreliableObjectReceiveStream[T_Item], UnreliableObjectSendStream[T_Item]
+):
+    """
+    A bidirectional message stream which does not guarantee the order or reliability of message
+    delivery.
+    """
+
+
+class ObjectReceiveStream(UnreliableObjectReceiveStream[T_co]):
+    """
+    A receive message stream which guarantees that messages are received in the same order in
+    which they were sent, and that no messages are missed.
+    """
+
+
+class ObjectSendStream(UnreliableObjectSendStream[T_contra]):
+    """
+    A send message stream which guarantees that messages are delivered in the same order in which
+    they were sent, without missing any messages in the middle.
+    """
+
+
+class ObjectStream(
+    ObjectReceiveStream[T_Item],
+    ObjectSendStream[T_Item],
+    UnreliableObjectStream[T_Item],
+):
+    """
+    A bidirectional message stream which guarantees the order and reliability of message delivery.
+    """
+
+    @abstractmethod
+    async def send_eof(self) -> None:
+        """
+        Send an end-of-file indication to the peer.
+
+        You should not try to send any further data to this stream after calling this method.
+        This method is idempotent (does nothing on successive calls).
+        """
+
+
+class ByteReceiveStream(AsyncResource, TypedAttributeProvider):
+    """
+    An interface for receiving bytes from a single peer.
+
+    Iterating this byte stream will yield a byte string of arbitrary length, but no more than
+    65536 bytes.
+    """
+
+    def __aiter__(self) -> ByteReceiveStream:
+        return self
+
+    async def __anext__(self) -> bytes:
+        try:
+            return await self.receive()
+        except EndOfStream:
+            raise StopAsyncIteration
+
+    @abstractmethod
+    async def receive(self, max_bytes: int = 65536) -> bytes:
+        """
+        Receive at most ``max_bytes`` bytes from the peer.
+
+        .. note:: Implementors of this interface should not return an empty :class:`bytes` object,
+            and users should ignore them.
+
+        :param max_bytes: maximum number of bytes to receive
+        :return: the received bytes
+        :raises ~anyio.EndOfStream: if this stream has been closed from the other end
+        """
+
+
+class ByteSendStream(AsyncResource, TypedAttributeProvider):
+    """An interface for sending bytes to a single peer."""
+
+    @abstractmethod
+    async def send(self, item: bytes) -> None:
+        """
+        Send the given bytes to the peer.
+
+        :param item: the bytes to send
+        """
+
+
+class ByteStream(ByteReceiveStream, ByteSendStream):
+    """A bidirectional byte stream."""
+
+    @abstractmethod
+    async def send_eof(self) -> None:
+        """
+        Send an end-of-file indication to the peer.
+
+        You should not try to send any further data to this stream after calling this method.
+        This method is idempotent (does nothing on successive calls).
+        """
+
+
+#: Type alias for all unreliable bytes-oriented receive streams.
+AnyUnreliableByteReceiveStream = Union[
+    UnreliableObjectReceiveStream[bytes], ByteReceiveStream
+]
+#: Type alias for all unreliable bytes-oriented send streams.
+AnyUnreliableByteSendStream = Union[UnreliableObjectSendStream[bytes], ByteSendStream]
+#: Type alias for all unreliable bytes-oriented streams.
+AnyUnreliableByteStream = Union[UnreliableObjectStream[bytes], ByteStream]
+#: Type alias for all bytes-oriented receive streams.
+AnyByteReceiveStream = Union[ObjectReceiveStream[bytes], ByteReceiveStream]
+#: Type alias for all bytes-oriented send streams.
+AnyByteSendStream = Union[ObjectSendStream[bytes], ByteSendStream]
+#: Type alias for all bytes-oriented streams.
+AnyByteStream = Union[ObjectStream[bytes], ByteStream]
+
+
+class Listener(Generic[T_co], AsyncResource, TypedAttributeProvider):
+    """An interface for objects that let you accept incoming connections."""
+
+    @abstractmethod
+    async def serve(
+        self,
+        handler: Callable[[T_co], Any],
+        task_group: TaskGroup | None = None,
+    ) -> None:
+        """
+        Accept incoming connections as they come in and start tasks to handle them.
+
+        :param handler: a callable that will be used to handle each accepted connection
+        :param task_group: the task group that will be used to start tasks for handling each
+            accepted connection (if omitted, an ad-hoc task group will be created)
+        """

Backend/venv/lib/python3.12/site-packages/anyio/abc/_subprocesses.py

@@ -0,0 +1,79 @@
+from __future__ import annotations
+
+from abc import abstractmethod
+from signal import Signals
+
+from ._resources import AsyncResource
+from ._streams import ByteReceiveStream, ByteSendStream
+
+
+class Process(AsyncResource):
+    """An asynchronous version of :class:`subprocess.Popen`."""
+
+    @abstractmethod
+    async def wait(self) -> int:
+        """
+        Wait until the process exits.
+
+        :return: the exit code of the process
+        """
+
+    @abstractmethod
+    def terminate(self) -> None:
+        """
+        Terminates the process, gracefully if possible.
+
+        On Windows, this calls ``TerminateProcess()``.
+        On POSIX systems, this sends ``SIGTERM`` to the process.
+
+        .. seealso:: :meth:`subprocess.Popen.terminate`
+        """
+
+    @abstractmethod
+    def kill(self) -> None:
+        """
+        Kills the process.
+
+        On Windows, this calls ``TerminateProcess()``.
+        On POSIX systems, this sends ``SIGKILL`` to the process.
+
+        .. seealso:: :meth:`subprocess.Popen.kill`
+        """
+
+    @abstractmethod
+    def send_signal(self, signal: Signals) -> None:
+        """
+        Send a signal to the subprocess.
+
+        .. seealso:: :meth:`subprocess.Popen.send_signal`
+
+        :param signal: the signal number (e.g. :data:`signal.SIGHUP`)
+        """
+
+    @property
+    @abstractmethod
+    def pid(self) -> int:
+        """The process ID of the process."""
+
+    @property
+    @abstractmethod
+    def returncode(self) -> int | None:
+        """
+        The return code of the process. If the process has not yet terminated, this will be
+        ``None``.
+        """
+
+    @property
+    @abstractmethod
+    def stdin(self) -> ByteSendStream | None:
+        """The stream for the standard input of the process."""
+
+    @property
+    @abstractmethod
+    def stdout(self) -> ByteReceiveStream | None:
+        """The stream for the standard output of the process."""
+
+    @property
+    @abstractmethod
+    def stderr(self) -> ByteReceiveStream | None:
+        """The stream for the standard error output of the process."""

Backend/venv/lib/python3.12/site-packages/anyio/abc/_tasks.py

@@ -0,0 +1,119 @@
+from __future__ import annotations
+
+import sys
+from abc import ABCMeta, abstractmethod
+from types import TracebackType
+from typing import TYPE_CHECKING, Any, Awaitable, Callable, TypeVar, overload
+from warnings import warn
+
+if sys.version_info >= (3, 8):
+    from typing import Protocol
+else:
+    from typing_extensions import Protocol
+
+if TYPE_CHECKING:
+    from anyio._core._tasks import CancelScope
+
+T_Retval = TypeVar("T_Retval")
+T_contra = TypeVar("T_contra", contravariant=True)
+
+
+class TaskStatus(Protocol[T_contra]):
+    @overload
+    def started(self: TaskStatus[None]) -> None:
+        ...
+
+    @overload
+    def started(self, value: T_contra) -> None:
+        ...
+
+    def started(self, value: T_contra | None = None) -> None:
+        """
+        Signal that the task has started.
+
+        :param value: object passed back to the starter of the task
+        """
+
+
+class TaskGroup(metaclass=ABCMeta):
+    """
+    Groups several asynchronous tasks together.
+
+    :ivar cancel_scope: the cancel scope inherited by all child tasks
+    :vartype cancel_scope: CancelScope
+    """
+
+    cancel_scope: CancelScope
+
+    async def spawn(
+        self,
+        func: Callable[..., Awaitable[Any]],
+        *args: object,
+        name: object = None,
+    ) -> None:
+        """
+        Start a new task in this task group.
+
+        :param func: a coroutine function
+        :param args: positional arguments to call the function with
+        :param name: name of the task, for the purposes of introspection and debugging
+
+        .. deprecated:: 3.0
+           Use :meth:`start_soon` instead. If your code needs AnyIO 2 compatibility, you
+           can keep using this until AnyIO 4.
+
+        """
+        warn(
+            'spawn() is deprecated -- use start_soon() (without the "await") instead',
+            DeprecationWarning,
+        )
+        self.start_soon(func, *args, name=name)
+
+    @abstractmethod
+    def start_soon(
+        self,
+        func: Callable[..., Awaitable[Any]],
+        *args: object,
+        name: object = None,
+    ) -> None:
+        """
+        Start a new task in this task group.
+
+        :param func: a coroutine function
+        :param args: positional arguments to call the function with
+        :param name: name of the task, for the purposes of introspection and debugging
+
+        .. versionadded:: 3.0
+        """
+
+    @abstractmethod
+    async def start(
+        self,
+        func: Callable[..., Awaitable[Any]],
+        *args: object,
+        name: object = None,
+    ) -> Any:
+        """
+        Start a new task and wait until it signals for readiness.
+
+        :param func: a coroutine function
+        :param args: positional arguments to call the function with
+        :param name: name of the task, for the purposes of introspection and debugging
+        :return: the value passed to ``task_status.started()``
+        :raises RuntimeError: if the task finishes without calling ``task_status.started()``
+
+        .. versionadded:: 3.0
+        """
+
+    @abstractmethod
+    async def __aenter__(self) -> TaskGroup:
+        """Enter the task group context and allow starting new tasks."""
+
+    @abstractmethod
+    async def __aexit__(
+        self,
+        exc_type: type[BaseException] | None,
+        exc_val: BaseException | None,
+        exc_tb: TracebackType | None,
+    ) -> bool | None:
+        """Exit the task group context waiting for all tasks to finish."""

Backend/venv/lib/python3.12/site-packages/anyio/abc/_testing.py

@@ -0,0 +1,70 @@
+from __future__ import annotations
+
+import types
+from abc import ABCMeta, abstractmethod
+from collections.abc import AsyncGenerator, Iterable
+from typing import Any, Callable, Coroutine, TypeVar
+
+_T = TypeVar("_T")
+
+
+class TestRunner(metaclass=ABCMeta):
+    """
+    Encapsulates a running event loop. Every call made through this object will use the same event
+    loop.
+    """
+
+    def __enter__(self) -> TestRunner:
+        return self
+
+    def __exit__(
+        self,
+        exc_type: type[BaseException] | None,
+        exc_val: BaseException | None,
+        exc_tb: types.TracebackType | None,
+    ) -> bool | None:
+        self.close()
+        return None
+
+    @abstractmethod
+    def close(self) -> None:
+        """Close the event loop."""
+
+    @abstractmethod
+    def run_asyncgen_fixture(
+        self,
+        fixture_func: Callable[..., AsyncGenerator[_T, Any]],
+        kwargs: dict[str, Any],
+    ) -> Iterable[_T]:
+        """
+        Run an async generator fixture.
+
+        :param fixture_func: the fixture function
+        :param kwargs: keyword arguments to call the fixture function with
+        :return: an iterator yielding the value yielded from the async generator
+        """
+
+    @abstractmethod
+    def run_fixture(
+        self,
+        fixture_func: Callable[..., Coroutine[Any, Any, _T]],
+        kwargs: dict[str, Any],
+    ) -> _T:
+        """
+        Run an async fixture.
+
+        :param fixture_func: the fixture function
+        :param kwargs: keyword arguments to call the fixture function with
+        :return: the return value of the fixture function
+        """
+
+    @abstractmethod
+    def run_test(
+        self, test_func: Callable[..., Coroutine[Any, Any, Any]], kwargs: dict[str, Any]
+    ) -> None:
+        """
+        Run an async test function.
+
+        :param test_func: the test function
+        :param kwargs: keyword arguments to call the test function with
+        """

Backend/venv/lib/python3.12/site-packages/anyio/from_thread.py

@@ -0,0 +1,500 @@
+from __future__ import annotations
+
+import threading
+from asyncio import iscoroutine
+from concurrent.futures import FIRST_COMPLETED, Future, ThreadPoolExecutor, wait
+from contextlib import AbstractContextManager, contextmanager
+from types import TracebackType
+from typing import (
+    Any,
+    AsyncContextManager,
+    Awaitable,
+    Callable,
+    ContextManager,
+    Generator,
+    Generic,
+    Iterable,
+    TypeVar,
+    cast,
+    overload,
+)
+from warnings import warn
+
+from ._core import _eventloop
+from ._core._eventloop import get_asynclib, get_cancelled_exc_class, threadlocals
+from ._core._synchronization import Event
+from ._core._tasks import CancelScope, create_task_group
+from .abc._tasks import TaskStatus
+
+T_Retval = TypeVar("T_Retval")
+T_co = TypeVar("T_co")
+
+
+def run(func: Callable[..., Awaitable[T_Retval]], *args: object) -> T_Retval:
+    """
+    Call a coroutine function from a worker thread.
+
+    :param func: a coroutine function
+    :param args: positional arguments for the callable
+    :return: the return value of the coroutine function
+
+    """
+    try:
+        asynclib = threadlocals.current_async_module
+    except AttributeError:
+        raise RuntimeError("This function can only be run from an AnyIO worker thread")
+
+    return asynclib.run_async_from_thread(func, *args)
+
+
+def run_async_from_thread(
+    func: Callable[..., Awaitable[T_Retval]], *args: object
+) -> T_Retval:
+    warn(
+        "run_async_from_thread() has been deprecated, use anyio.from_thread.run() instead",
+        DeprecationWarning,
+    )
+    return run(func, *args)
+
+
+def run_sync(func: Callable[..., T_Retval], *args: object) -> T_Retval:
+    """
+    Call a function in the event loop thread from a worker thread.
+
+    :param func: a callable
+    :param args: positional arguments for the callable
+    :return: the return value of the callable
+
+    """
+    try:
+        asynclib = threadlocals.current_async_module
+    except AttributeError:
+        raise RuntimeError("This function can only be run from an AnyIO worker thread")
+
+    return asynclib.run_sync_from_thread(func, *args)
+
+
+def run_sync_from_thread(func: Callable[..., T_Retval], *args: object) -> T_Retval:
+    warn(
+        "run_sync_from_thread() has been deprecated, use anyio.from_thread.run_sync() instead",
+        DeprecationWarning,
+    )
+    return run_sync(func, *args)
+
+
+class _BlockingAsyncContextManager(Generic[T_co], AbstractContextManager):
+    _enter_future: Future
+    _exit_future: Future
+    _exit_event: Event
+    _exit_exc_info: tuple[
+        type[BaseException] | None, BaseException | None, TracebackType | None
+    ] = (None, None, None)
+
+    def __init__(self, async_cm: AsyncContextManager[T_co], portal: BlockingPortal):
+        self._async_cm = async_cm
+        self._portal = portal
+
+    async def run_async_cm(self) -> bool | None:
+        try:
+            self._exit_event = Event()
+            value = await self._async_cm.__aenter__()
+        except BaseException as exc:
+            self._enter_future.set_exception(exc)
+            raise
+        else:
+            self._enter_future.set_result(value)
+
+        try:
+            # Wait for the sync context manager to exit.
+            # This next statement can raise `get_cancelled_exc_class()` if
+            # something went wrong in a task group in this async context
+            # manager.
+            await self._exit_event.wait()
+        finally:
+            # In case of cancellation, it could be that we end up here before
+            # `_BlockingAsyncContextManager.__exit__` is called, and an
+            # `_exit_exc_info` has been set.
+            result = await self._async_cm.__aexit__(*self._exit_exc_info)
+            return result
+
+    def __enter__(self) -> T_co:
+        self._enter_future = Future()
+        self._exit_future = self._portal.start_task_soon(self.run_async_cm)
+        cm = self._enter_future.result()
+        return cast(T_co, cm)
+
+    def __exit__(
+        self,
+        __exc_type: type[BaseException] | None,
+        __exc_value: BaseException | None,
+        __traceback: TracebackType | None,
+    ) -> bool | None:
+        self._exit_exc_info = __exc_type, __exc_value, __traceback
+        self._portal.call(self._exit_event.set)
+        return self._exit_future.result()
+
+
+class _BlockingPortalTaskStatus(TaskStatus):
+    def __init__(self, future: Future):
+        self._future = future
+
+    def started(self, value: object = None) -> None:
+        self._future.set_result(value)
+
+
+class BlockingPortal:
+    """An object that lets external threads run code in an asynchronous event loop."""
+
+    def __new__(cls) -> BlockingPortal:
+        return get_asynclib().BlockingPortal()
+
+    def __init__(self) -> None:
+        self._event_loop_thread_id: int | None = threading.get_ident()
+        self._stop_event = Event()
+        self._task_group = create_task_group()
+        self._cancelled_exc_class = get_cancelled_exc_class()
+
+    async def __aenter__(self) -> BlockingPortal:
+        await self._task_group.__aenter__()
+        return self
+
+    async def __aexit__(
+        self,
+        exc_type: type[BaseException] | None,
+        exc_val: BaseException | None,
+        exc_tb: TracebackType | None,
+    ) -> bool | None:
+        await self.stop()
+        return await self._task_group.__aexit__(exc_type, exc_val, exc_tb)
+
+    def _check_running(self) -> None:
+        if self._event_loop_thread_id is None:
+            raise RuntimeError("This portal is not running")
+        if self._event_loop_thread_id == threading.get_ident():
+            raise RuntimeError(
+                "This method cannot be called from the event loop thread"
+            )
+
+    async def sleep_until_stopped(self) -> None:
+        """Sleep until :meth:`stop` is called."""
+        await self._stop_event.wait()
+
+    async def stop(self, cancel_remaining: bool = False) -> None:
+        """
+        Signal the portal to shut down.
+
+        This marks the portal as no longer accepting new calls and exits from
+        :meth:`sleep_until_stopped`.
+
+        :param cancel_remaining: ``True`` to cancel all the remaining tasks, ``False`` to let them
+            finish before returning
+
+        """
+        self._event_loop_thread_id = None
+        self._stop_event.set()
+        if cancel_remaining:
+            self._task_group.cancel_scope.cancel()
+
+    async def _call_func(
+        self, func: Callable, args: tuple, kwargs: dict[str, Any], future: Future
+    ) -> None:
+        def callback(f: Future) -> None:
+            if f.cancelled() and self._event_loop_thread_id not in (
+                None,
+                threading.get_ident(),
+            ):
+                self.call(scope.cancel)
+
+        try:
+            retval = func(*args, **kwargs)
+            if iscoroutine(retval):
+                with CancelScope() as scope:
+                    if future.cancelled():
+                        scope.cancel()
+                    else:
+                        future.add_done_callback(callback)
+
+                    retval = await retval
+        except self._cancelled_exc_class:
+            future.cancel()
+        except BaseException as exc:
+            if not future.cancelled():
+                future.set_exception(exc)
+
+            # Let base exceptions fall through
+            if not isinstance(exc, Exception):
+                raise
+        else:
+            if not future.cancelled():
+                future.set_result(retval)
+        finally:
+            scope = None  # type: ignore[assignment]
+
+    def _spawn_task_from_thread(
+        self,
+        func: Callable,
+        args: tuple,
+        kwargs: dict[str, Any],
+        name: object,
+        future: Future,
+    ) -> None:
+        """
+        Spawn a new task using the given callable.
+
+        Implementors must ensure that the future is resolved when the task finishes.
+
+        :param func: a callable
+        :param args: positional arguments to be passed to the callable
+        :param kwargs: keyword arguments to be passed to the callable
+        :param name: name of the task (will be coerced to a string if not ``None``)
+        :param future: a future that will resolve to the return value of the callable, or the
+            exception raised during its execution
+
+        """
+        raise NotImplementedError
+
+    @overload
+    def call(self, func: Callable[..., Awaitable[T_Retval]], *args: object) -> T_Retval:
+        ...
+
+    @overload
+    def call(self, func: Callable[..., T_Retval], *args: object) -> T_Retval:
+        ...
+
+    def call(
+        self, func: Callable[..., Awaitable[T_Retval] | T_Retval], *args: object
+    ) -> T_Retval:
+        """
+        Call the given function in the event loop thread.
+
+        If the callable returns a coroutine object, it is awaited on.
+
+        :param func: any callable
+        :raises RuntimeError: if the portal is not running or if this method is called from within
+            the event loop thread
+
+        """
+        return cast(T_Retval, self.start_task_soon(func, *args).result())
+
+    @overload
+    def spawn_task(
+        self,
+        func: Callable[..., Awaitable[T_Retval]],
+        *args: object,
+        name: object = None,
+    ) -> Future[T_Retval]:
+        ...
+
+    @overload
+    def spawn_task(
+        self, func: Callable[..., T_Retval], *args: object, name: object = None
+    ) -> Future[T_Retval]:
+        ...
+
+    def spawn_task(
+        self,
+        func: Callable[..., Awaitable[T_Retval] | T_Retval],
+        *args: object,
+        name: object = None,
+    ) -> Future[T_Retval]:
+        """
+        Start a task in the portal's task group.
+
+        :param func: the target coroutine function
+        :param args: positional arguments passed to ``func``
+        :param name: name of the task (will be coerced to a string if not ``None``)
+        :return: a future that resolves with the return value of the callable if the task completes
+            successfully, or with the exception raised in the task
+        :raises RuntimeError: if the portal is not running or if this method is called from within
+            the event loop thread
+
+        .. versionadded:: 2.1
+        .. deprecated:: 3.0
+           Use :meth:`start_task_soon` instead. If your code needs AnyIO 2 compatibility, you
+           can keep using this until AnyIO 4.
+
+        """
+        warn(
+            "spawn_task() is deprecated -- use start_task_soon() instead",
+            DeprecationWarning,
+        )
+        return self.start_task_soon(func, *args, name=name)  # type: ignore[arg-type]
+
+    @overload
+    def start_task_soon(
+        self,
+        func: Callable[..., Awaitable[T_Retval]],
+        *args: object,
+        name: object = None,
+    ) -> Future[T_Retval]:
+        ...
+
+    @overload
+    def start_task_soon(
+        self, func: Callable[..., T_Retval], *args: object, name: object = None
+    ) -> Future[T_Retval]:
+        ...
+
+    def start_task_soon(
+        self,
+        func: Callable[..., Awaitable[T_Retval] | T_Retval],
+        *args: object,
+        name: object = None,
+    ) -> Future[T_Retval]:
+        """
+        Start a task in the portal's task group.
+
+        The task will be run inside a cancel scope which can be cancelled by cancelling the
+        returned future.
+
+        :param func: the target function
+        :param args: positional arguments passed to ``func``
+        :param name: name of the task (will be coerced to a string if not ``None``)
+        :return: a future that resolves with the return value of the callable if the
+            task completes successfully, or with the exception raised in the task
+        :raises RuntimeError: if the portal is not running or if this method is called
+            from within the event loop thread
+        :rtype: concurrent.futures.Future[T_Retval]
+
+        .. versionadded:: 3.0
+
+        """
+        self._check_running()
+        f: Future = Future()
+        self._spawn_task_from_thread(func, args, {}, name, f)
+        return f
+
+    def start_task(
+        self, func: Callable[..., Awaitable[Any]], *args: object, name: object = None
+    ) -> tuple[Future[Any], Any]:
+        """
+        Start a task in the portal's task group and wait until it signals for readiness.
+
+        This method works the same way as :meth:`.abc.TaskGroup.start`.
+
+        :param func: the target function
+        :param args: positional arguments passed to ``func``
+        :param name: name of the task (will be coerced to a string if not ``None``)
+        :return: a tuple of (future, task_status_value) where the ``task_status_value``
+            is the value passed to ``task_status.started()`` from within the target
+            function
+        :rtype: tuple[concurrent.futures.Future[Any], Any]
+
+        .. versionadded:: 3.0
+
+        """
+
+        def task_done(future: Future) -> None:
+            if not task_status_future.done():
+                if future.cancelled():
+                    task_status_future.cancel()
+                elif future.exception():
+                    task_status_future.set_exception(future.exception())
+                else:
+                    exc = RuntimeError(
+                        "Task exited without calling task_status.started()"
+                    )
+                    task_status_future.set_exception(exc)
+
+        self._check_running()
+        task_status_future: Future = Future()
+        task_status = _BlockingPortalTaskStatus(task_status_future)
+        f: Future = Future()
+        f.add_done_callback(task_done)
+        self._spawn_task_from_thread(func, args, {"task_status": task_status}, name, f)
+        return f, task_status_future.result()
+
+    def wrap_async_context_manager(
+        self, cm: AsyncContextManager[T_co]
+    ) -> ContextManager[T_co]:
+        """
+        Wrap an async context manager as a synchronous context manager via this portal.
+
+        Spawns a task that will call both ``__aenter__()`` and ``__aexit__()``, stopping in the
+        middle until the synchronous context manager exits.
+
+        :param cm: an asynchronous context manager
+        :return: a synchronous context manager
+
+        .. versionadded:: 2.1
+
+        """
+        return _BlockingAsyncContextManager(cm, self)
+
+
+def create_blocking_portal() -> BlockingPortal:
+    """
+    Create a portal for running functions in the event loop thread from external threads.
+
+    Use this function in asynchronous code when you need to allow external threads access to the
+    event loop where your asynchronous code is currently running.
+
+    .. deprecated:: 3.0
+        Use :class:`.BlockingPortal` directly.
+
+    """
+    warn(
+        "create_blocking_portal() has been deprecated -- use anyio.from_thread.BlockingPortal() "
+        "directly",
+        DeprecationWarning,
+    )
+    return BlockingPortal()
+
+
+@contextmanager
+def start_blocking_portal(
+    backend: str = "asyncio", backend_options: dict[str, Any] | None = None
+) -> Generator[BlockingPortal, Any, None]:
+    """
+    Start a new event loop in a new thread and run a blocking portal in its main task.
+
+    The parameters are the same as for :func:`~anyio.run`.
+
+    :param backend: name of the backend
+    :param backend_options: backend options
+    :return: a context manager that yields a blocking portal
+
+    .. versionchanged:: 3.0
+        Usage as a context manager is now required.
+
+    """
+
+    async def run_portal() -> None:
+        async with BlockingPortal() as portal_:
+            if future.set_running_or_notify_cancel():
+                future.set_result(portal_)
+                await portal_.sleep_until_stopped()
+
+    future: Future[BlockingPortal] = Future()
+    with ThreadPoolExecutor(1) as executor:
+        run_future = executor.submit(
+            _eventloop.run,
+            run_portal,  # type: ignore[arg-type]
+            backend=backend,
+            backend_options=backend_options,
+        )
+        try:
+            wait(
+                cast(Iterable[Future], [run_future, future]),
+                return_when=FIRST_COMPLETED,
+            )
+        except BaseException:
+            future.cancel()
+            run_future.cancel()
+            raise
+
+        if future.done():
+            portal = future.result()
+            cancel_remaining_tasks = False
+            try:
+                yield portal
+            except BaseException:
+                cancel_remaining_tasks = True
+                raise
+            finally:
+                try:
+                    portal.call(portal.stop, cancel_remaining_tasks)
+                except RuntimeError:
+                    pass
+
+        run_future.result()

Backend/venv/lib/python3.12/site-packages/anyio/lowlevel.py

@@ -0,0 +1,174 @@
+from __future__ import annotations
+
+import enum
+import sys
+from dataclasses import dataclass
+from typing import Any, Generic, TypeVar, overload
+from weakref import WeakKeyDictionary
+
+from ._core._eventloop import get_asynclib
+
+if sys.version_info >= (3, 8):
+    from typing import Literal
+else:
+    from typing_extensions import Literal
+
+T = TypeVar("T")
+D = TypeVar("D")
+
+
+async def checkpoint() -> None:
+    """
+    Check for cancellation and allow the scheduler to switch to another task.
+
+    Equivalent to (but more efficient than)::
+
+        await checkpoint_if_cancelled()
+        await cancel_shielded_checkpoint()
+
+
+    .. versionadded:: 3.0
+
+    """
+    await get_asynclib().checkpoint()
+
+
+async def checkpoint_if_cancelled() -> None:
+    """
+    Enter a checkpoint if the enclosing cancel scope has been cancelled.
+
+    This does not allow the scheduler to switch to a different task.
+
+    .. versionadded:: 3.0
+
+    """
+    await get_asynclib().checkpoint_if_cancelled()
+
+
+async def cancel_shielded_checkpoint() -> None:
+    """
+    Allow the scheduler to switch to another task but without checking for cancellation.
+
+    Equivalent to (but potentially more efficient than)::
+
+        with CancelScope(shield=True):
+            await checkpoint()
+
+
+    .. versionadded:: 3.0
+
+    """
+    await get_asynclib().cancel_shielded_checkpoint()
+
+
+def current_token() -> object:
+    """Return a backend specific token object that can be used to get back to the event loop."""
+    return get_asynclib().current_token()
+
+
+_run_vars: WeakKeyDictionary[Any, dict[str, Any]] = WeakKeyDictionary()
+_token_wrappers: dict[Any, _TokenWrapper] = {}
+
+
+@dataclass(frozen=True)
+class _TokenWrapper:
+    __slots__ = "_token", "__weakref__"
+    _token: object
+
+
+class _NoValueSet(enum.Enum):
+    NO_VALUE_SET = enum.auto()
+
+
+class RunvarToken(Generic[T]):
+    __slots__ = "_var", "_value", "_redeemed"
+
+    def __init__(self, var: RunVar[T], value: T | Literal[_NoValueSet.NO_VALUE_SET]):
+        self._var = var
+        self._value: T | Literal[_NoValueSet.NO_VALUE_SET] = value
+        self._redeemed = False
+
+
+class RunVar(Generic[T]):
+    """
+    Like a :class:`~contextvars.ContextVar`, except scoped to the running event loop.
+    """
+
+    __slots__ = "_name", "_default"
+
+    NO_VALUE_SET: Literal[_NoValueSet.NO_VALUE_SET] = _NoValueSet.NO_VALUE_SET
+
+    _token_wrappers: set[_TokenWrapper] = set()
+
+    def __init__(
+        self,
+        name: str,
+        default: T | Literal[_NoValueSet.NO_VALUE_SET] = NO_VALUE_SET,
+    ):
+        self._name = name
+        self._default = default
+
+    @property
+    def _current_vars(self) -> dict[str, T]:
+        token = current_token()
+        while True:
+            try:
+                return _run_vars[token]
+            except TypeError:
+                # Happens when token isn't weak referable (TrioToken).
+                # This workaround does mean that some memory will leak on Trio until the problem
+                # is fixed on their end.
+                token = _TokenWrapper(token)
+                self._token_wrappers.add(token)
+            except KeyError:
+                run_vars = _run_vars[token] = {}
+                return run_vars
+
+    @overload
+    def get(self, default: D) -> T | D:
+        ...
+
+    @overload
+    def get(self) -> T:
+        ...
+
+    def get(
+        self, default: D | Literal[_NoValueSet.NO_VALUE_SET] = NO_VALUE_SET
+    ) -> T | D:
+        try:
+            return self._current_vars[self._name]
+        except KeyError:
+            if default is not RunVar.NO_VALUE_SET:
+                return default
+            elif self._default is not RunVar.NO_VALUE_SET:
+                return self._default
+
+        raise LookupError(
+            f'Run variable "{self._name}" has no value and no default set'
+        )
+
+    def set(self, value: T) -> RunvarToken[T]:
+        current_vars = self._current_vars
+        token = RunvarToken(self, current_vars.get(self._name, RunVar.NO_VALUE_SET))
+        current_vars[self._name] = value
+        return token
+
+    def reset(self, token: RunvarToken[T]) -> None:
+        if token._var is not self:
+            raise ValueError("This token does not belong to this RunVar")
+
+        if token._redeemed:
+            raise ValueError("This token has already been used")
+
+        if token._value is _NoValueSet.NO_VALUE_SET:
+            try:
+                del self._current_vars[self._name]
+            except KeyError:
+                pass
+        else:
+            self._current_vars[self._name] = token._value
+
+        token._redeemed = True
+
+    def __repr__(self) -> str:
+        return f"<RunVar name={self._name!r}>"

Backend/venv/lib/python3.12/site-packages/anyio/pytest_plugin.py

@@ -0,0 +1,142 @@
+from __future__ import annotations
+
+from contextlib import contextmanager
+from inspect import isasyncgenfunction, iscoroutinefunction
+from typing import Any, Dict, Generator, Tuple, cast
+
+import pytest
+import sniffio
+
+from ._core._eventloop import get_all_backends, get_asynclib
+from .abc import TestRunner
+
+_current_runner: TestRunner | None = None
+
+
+def extract_backend_and_options(backend: object) -> tuple[str, dict[str, Any]]:
+    if isinstance(backend, str):
+        return backend, {}
+    elif isinstance(backend, tuple) and len(backend) == 2:
+        if isinstance(backend[0], str) and isinstance(backend[1], dict):
+            return cast(Tuple[str, Dict[str, Any]], backend)
+
+    raise TypeError("anyio_backend must be either a string or tuple of (string, dict)")
+
+
+@contextmanager
+def get_runner(
+    backend_name: str, backend_options: dict[str, Any]
+) -> Generator[TestRunner, object, None]:
+    global _current_runner
+    if _current_runner:
+        yield _current_runner
+        return
+
+    asynclib = get_asynclib(backend_name)
+    token = None
+    if sniffio.current_async_library_cvar.get(None) is None:
+        # Since we're in control of the event loop, we can cache the name of the async library
+        token = sniffio.current_async_library_cvar.set(backend_name)
+
+    try:
+        backend_options = backend_options or {}
+        with asynclib.TestRunner(**backend_options) as runner:
+            _current_runner = runner
+            yield runner
+    finally:
+        _current_runner = None
+        if token:
+            sniffio.current_async_library_cvar.reset(token)
+
+
+def pytest_configure(config: Any) -> None:
+    config.addinivalue_line(
+        "markers",
+        "anyio: mark the (coroutine function) test to be run "
+        "asynchronously via anyio.",
+    )
+
+
+def pytest_fixture_setup(fixturedef: Any, request: Any) -> None:
+    def wrapper(*args, anyio_backend, **kwargs):  # type: ignore[no-untyped-def]
+        backend_name, backend_options = extract_backend_and_options(anyio_backend)
+        if has_backend_arg:
+            kwargs["anyio_backend"] = anyio_backend
+
+        with get_runner(backend_name, backend_options) as runner:
+            if isasyncgenfunction(func):
+                yield from runner.run_asyncgen_fixture(func, kwargs)
+            else:
+                yield runner.run_fixture(func, kwargs)
+
+    # Only apply this to coroutine functions and async generator functions in requests that involve
+    # the anyio_backend fixture
+    func = fixturedef.func
+    if isasyncgenfunction(func) or iscoroutinefunction(func):
+        if "anyio_backend" in request.fixturenames:
+            has_backend_arg = "anyio_backend" in fixturedef.argnames
+            fixturedef.func = wrapper
+            if not has_backend_arg:
+                fixturedef.argnames += ("anyio_backend",)
+
+
+@pytest.hookimpl(tryfirst=True)
+def pytest_pycollect_makeitem(collector: Any, name: Any, obj: Any) -> None:
+    if collector.istestfunction(obj, name):
+        inner_func = obj.hypothesis.inner_test if hasattr(obj, "hypothesis") else obj
+        if iscoroutinefunction(inner_func):
+            marker = collector.get_closest_marker("anyio")
+            own_markers = getattr(obj, "pytestmark", ())
+            if marker or any(marker.name == "anyio" for marker in own_markers):
+                pytest.mark.usefixtures("anyio_backend")(obj)
+
+
+@pytest.hookimpl(tryfirst=True)
+def pytest_pyfunc_call(pyfuncitem: Any) -> bool | None:
+    def run_with_hypothesis(**kwargs: Any) -> None:
+        with get_runner(backend_name, backend_options) as runner:
+            runner.run_test(original_func, kwargs)
+
+    backend = pyfuncitem.funcargs.get("anyio_backend")
+    if backend:
+        backend_name, backend_options = extract_backend_and_options(backend)
+
+        if hasattr(pyfuncitem.obj, "hypothesis"):
+            # Wrap the inner test function unless it's already wrapped
+            original_func = pyfuncitem.obj.hypothesis.inner_test
+            if original_func.__qualname__ != run_with_hypothesis.__qualname__:
+                if iscoroutinefunction(original_func):
+                    pyfuncitem.obj.hypothesis.inner_test = run_with_hypothesis
+
+            return None
+
+        if iscoroutinefunction(pyfuncitem.obj):
+            funcargs = pyfuncitem.funcargs
+            testargs = {arg: funcargs[arg] for arg in pyfuncitem._fixtureinfo.argnames}
+            with get_runner(backend_name, backend_options) as runner:
+                runner.run_test(pyfuncitem.obj, testargs)
+
+            return True
+
+    return None
+
+
+@pytest.fixture(params=get_all_backends())
+def anyio_backend(request: Any) -> Any:
+    return request.param
+
+
+@pytest.fixture
+def anyio_backend_name(anyio_backend: Any) -> str:
+    if isinstance(anyio_backend, str):
+        return anyio_backend
+    else:
+        return anyio_backend[0]
+
+
+@pytest.fixture
+def anyio_backend_options(anyio_backend: Any) -> dict[str, Any]:
+    if isinstance(anyio_backend, str):
+        return {}
+    else:
+        return anyio_backend[1]

Backend/venv/lib/python3.12/site-packages/anyio/streams/buffered.py

@@ -0,0 +1,118 @@
+from __future__ import annotations
+
+from dataclasses import dataclass, field
+from typing import Any, Callable, Mapping
+
+from .. import ClosedResourceError, DelimiterNotFound, EndOfStream, IncompleteRead
+from ..abc import AnyByteReceiveStream, ByteReceiveStream
+
+
+@dataclass(eq=False)
+class BufferedByteReceiveStream(ByteReceiveStream):
+    """
+    Wraps any bytes-based receive stream and uses a buffer to provide sophisticated receiving
+    capabilities in the form of a byte stream.
+    """
+
+    receive_stream: AnyByteReceiveStream
+    _buffer: bytearray = field(init=False, default_factory=bytearray)
+    _closed: bool = field(init=False, default=False)
+
+    async def aclose(self) -> None:
+        await self.receive_stream.aclose()
+        self._closed = True
+
+    @property
+    def buffer(self) -> bytes:
+        """The bytes currently in the buffer."""
+        return bytes(self._buffer)
+
+    @property
+    def extra_attributes(self) -> Mapping[Any, Callable[[], Any]]:
+        return self.receive_stream.extra_attributes
+
+    async def receive(self, max_bytes: int = 65536) -> bytes:
+        if self._closed:
+            raise ClosedResourceError
+
+        if self._buffer:
+            chunk = bytes(self._buffer[:max_bytes])
+            del self._buffer[:max_bytes]
+            return chunk
+        elif isinstance(self.receive_stream, ByteReceiveStream):
+            return await self.receive_stream.receive(max_bytes)
+        else:
+            # With a bytes-oriented object stream, we need to handle any surplus bytes we get from
+            # the receive() call
+            chunk = await self.receive_stream.receive()
+            if len(chunk) > max_bytes:
+                # Save the surplus bytes in the buffer
+                self._buffer.extend(chunk[max_bytes:])
+                return chunk[:max_bytes]
+            else:
+                return chunk
+
+    async def receive_exactly(self, nbytes: int) -> bytes:
+        """
+        Read exactly the given amount of bytes from the stream.
+
+        :param nbytes: the number of bytes to read
+        :return: the bytes read
+        :raises ~anyio.IncompleteRead: if the stream was closed before the requested
+            amount of bytes could be read from the stream
+
+        """
+        while True:
+            remaining = nbytes - len(self._buffer)
+            if remaining <= 0:
+                retval = self._buffer[:nbytes]
+                del self._buffer[:nbytes]
+                return bytes(retval)
+
+            try:
+                if isinstance(self.receive_stream, ByteReceiveStream):
+                    chunk = await self.receive_stream.receive(remaining)
+                else:
+                    chunk = await self.receive_stream.receive()
+            except EndOfStream as exc:
+                raise IncompleteRead from exc
+
+            self._buffer.extend(chunk)
+
+    async def receive_until(self, delimiter: bytes, max_bytes: int) -> bytes:
+        """
+        Read from the stream until the delimiter is found or max_bytes have been read.
+
+        :param delimiter: the marker to look for in the stream
+        :param max_bytes: maximum number of bytes that will be read before raising
+            :exc:`~anyio.DelimiterNotFound`
+        :return: the bytes read (not including the delimiter)
+        :raises ~anyio.IncompleteRead: if the stream was closed before the delimiter
+            was found
+        :raises ~anyio.DelimiterNotFound: if the delimiter is not found within the
+            bytes read up to the maximum allowed
+
+        """
+        delimiter_size = len(delimiter)
+        offset = 0
+        while True:
+            # Check if the delimiter can be found in the current buffer
+            index = self._buffer.find(delimiter, offset)
+            if index >= 0:
+                found = self._buffer[:index]
+                del self._buffer[: index + len(delimiter) :]
+                return bytes(found)
+
+            # Check if the buffer is already at or over the limit
+            if len(self._buffer) >= max_bytes:
+                raise DelimiterNotFound(max_bytes)
+
+            # Read more data into the buffer from the socket
+            try:
+                data = await self.receive_stream.receive()
+            except EndOfStream as exc:
+                raise IncompleteRead from exc
+
+            # Move the offset forward and add the new data to the buffer
+            offset = max(len(self._buffer) - delimiter_size + 1, 0)
+            self._buffer.extend(data)

Backend/venv/lib/python3.12/site-packages/anyio/streams/file.py

@@ -0,0 +1,147 @@
+from __future__ import annotations
+
+from io import SEEK_SET, UnsupportedOperation
+from os import PathLike
+from pathlib import Path
+from typing import Any, BinaryIO, Callable, Mapping, cast
+
+from .. import (
+    BrokenResourceError,
+    ClosedResourceError,
+    EndOfStream,
+    TypedAttributeSet,
+    to_thread,
+    typed_attribute,
+)
+from ..abc import ByteReceiveStream, ByteSendStream
+
+
+class FileStreamAttribute(TypedAttributeSet):
+    #: the open file descriptor
+    file: BinaryIO = typed_attribute()
+    #: the path of the file on the file system, if available (file must be a real file)
+    path: Path = typed_attribute()
+    #: the file number, if available (file must be a real file or a TTY)
+    fileno: int = typed_attribute()
+
+
+class _BaseFileStream:
+    def __init__(self, file: BinaryIO):
+        self._file = file
+
+    async def aclose(self) -> None:
+        await to_thread.run_sync(self._file.close)
+
+    @property
+    def extra_attributes(self) -> Mapping[Any, Callable[[], Any]]:
+        attributes: dict[Any, Callable[[], Any]] = {
+            FileStreamAttribute.file: lambda: self._file,
+        }
+
+        if hasattr(self._file, "name"):
+            attributes[FileStreamAttribute.path] = lambda: Path(self._file.name)
+
+        try:
+            self._file.fileno()
+        except UnsupportedOperation:
+            pass
+        else:
+            attributes[FileStreamAttribute.fileno] = lambda: self._file.fileno()
+
+        return attributes
+
+
+class FileReadStream(_BaseFileStream, ByteReceiveStream):
+    """
+    A byte stream that reads from a file in the file system.
+
+    :param file: a file that has been opened for reading in binary mode
+
+    .. versionadded:: 3.0
+    """
+
+    @classmethod
+    async def from_path(cls, path: str | PathLike[str]) -> FileReadStream:
+        """
+        Create a file read stream by opening the given file.
+
+        :param path: path of the file to read from
+
+        """
+        file = await to_thread.run_sync(Path(path).open, "rb")
+        return cls(cast(BinaryIO, file))
+
+    async def receive(self, max_bytes: int = 65536) -> bytes:
+        try:
+            data = await to_thread.run_sync(self._file.read, max_bytes)
+        except ValueError:
+            raise ClosedResourceError from None
+        except OSError as exc:
+            raise BrokenResourceError from exc
+
+        if data:
+            return data
+        else:
+            raise EndOfStream
+
+    async def seek(self, position: int, whence: int = SEEK_SET) -> int:
+        """
+        Seek the file to the given position.
+
+        .. seealso:: :meth:`io.IOBase.seek`
+
+        .. note:: Not all file descriptors are seekable.
+
+        :param position: position to seek the file to
+        :param whence: controls how ``position`` is interpreted
+        :return: the new absolute position
+        :raises OSError: if the file is not seekable
+
+        """
+        return await to_thread.run_sync(self._file.seek, position, whence)
+
+    async def tell(self) -> int:
+        """
+        Return the current stream position.
+
+        .. note:: Not all file descriptors are seekable.
+
+        :return: the current absolute position
+        :raises OSError: if the file is not seekable
+
+        """
+        return await to_thread.run_sync(self._file.tell)
+
+
+class FileWriteStream(_BaseFileStream, ByteSendStream):
+    """
+    A byte stream that writes to a file in the file system.
+
+    :param file: a file that has been opened for writing in binary mode
+
+    .. versionadded:: 3.0
+    """
+
+    @classmethod
+    async def from_path(
+        cls, path: str | PathLike[str], append: bool = False
+    ) -> FileWriteStream:
+        """
+        Create a file write stream by opening the given file for writing.
+
+        :param path: path of the file to write to
+        :param append: if ``True``, open the file for appending; if ``False``, any existing file
+            at the given path will be truncated
+
+        """
+        mode = "ab" if append else "wb"
+        file = await to_thread.run_sync(Path(path).open, mode)
+        return cls(cast(BinaryIO, file))
+
+    async def send(self, item: bytes) -> None:
+        try:
+            await to_thread.run_sync(self._file.write, item)
+        except ValueError:
+            raise ClosedResourceError from None
+        except OSError as exc:
+            raise BrokenResourceError from exc

Backend/venv/lib/python3.12/site-packages/anyio/streams/memory.py

@@ -0,0 +1,279 @@
+from __future__ import annotations
+
+from collections import OrderedDict, deque
+from dataclasses import dataclass, field
+from types import TracebackType
+from typing import Generic, NamedTuple, TypeVar
+
+from .. import (
+    BrokenResourceError,
+    ClosedResourceError,
+    EndOfStream,
+    WouldBlock,
+    get_cancelled_exc_class,
+)
+from .._core._compat import DeprecatedAwaitable
+from ..abc import Event, ObjectReceiveStream, ObjectSendStream
+from ..lowlevel import checkpoint
+
+T_Item = TypeVar("T_Item")
+T_co = TypeVar("T_co", covariant=True)
+T_contra = TypeVar("T_contra", contravariant=True)
+
+
+class MemoryObjectStreamStatistics(NamedTuple):
+    current_buffer_used: int  #: number of items stored in the buffer
+    #: maximum number of items that can be stored on this stream (or :data:`math.inf`)
+    max_buffer_size: float
+    open_send_streams: int  #: number of unclosed clones of the send stream
+    open_receive_streams: int  #: number of unclosed clones of the receive stream
+    tasks_waiting_send: int  #: number of tasks blocked on :meth:`MemoryObjectSendStream.send`
+    #: number of tasks blocked on :meth:`MemoryObjectReceiveStream.receive`
+    tasks_waiting_receive: int
+
+
+@dataclass(eq=False)
+class MemoryObjectStreamState(Generic[T_Item]):
+    max_buffer_size: float = field()
+    buffer: deque[T_Item] = field(init=False, default_factory=deque)
+    open_send_channels: int = field(init=False, default=0)
+    open_receive_channels: int = field(init=False, default=0)
+    waiting_receivers: OrderedDict[Event, list[T_Item]] = field(
+        init=False, default_factory=OrderedDict
+    )
+    waiting_senders: OrderedDict[Event, T_Item] = field(
+        init=False, default_factory=OrderedDict
+    )
+
+    def statistics(self) -> MemoryObjectStreamStatistics:
+        return MemoryObjectStreamStatistics(
+            len(self.buffer),
+            self.max_buffer_size,
+            self.open_send_channels,
+            self.open_receive_channels,
+            len(self.waiting_senders),
+            len(self.waiting_receivers),
+        )
+
+
+@dataclass(eq=False)
+class MemoryObjectReceiveStream(Generic[T_co], ObjectReceiveStream[T_co]):
+    _state: MemoryObjectStreamState[T_co]
+    _closed: bool = field(init=False, default=False)
+
+    def __post_init__(self) -> None:
+        self._state.open_receive_channels += 1
+
+    def receive_nowait(self) -> T_co:
+        """
+        Receive the next item if it can be done without waiting.
+
+        :return: the received item
+        :raises ~anyio.ClosedResourceError: if this send stream has been closed
+        :raises ~anyio.EndOfStream: if the buffer is empty and this stream has been
+            closed from the sending end
+        :raises ~anyio.WouldBlock: if there are no items in the buffer and no tasks
+            waiting to send
+
+        """
+        if self._closed:
+            raise ClosedResourceError
+
+        if self._state.waiting_senders:
+            # Get the item from the next sender
+            send_event, item = self._state.waiting_senders.popitem(last=False)
+            self._state.buffer.append(item)
+            send_event.set()
+
+        if self._state.buffer:
+            return self._state.buffer.popleft()
+        elif not self._state.open_send_channels:
+            raise EndOfStream
+
+        raise WouldBlock
+
+    async def receive(self) -> T_co:
+        await checkpoint()
+        try:
+            return self.receive_nowait()
+        except WouldBlock:
+            # Add ourselves in the queue
+            receive_event = Event()
+            container: list[T_co] = []
+            self._state.waiting_receivers[receive_event] = container
+
+            try:
+                await receive_event.wait()
+            except get_cancelled_exc_class():
+                # Ignore the immediate cancellation if we already received an item, so as not to
+                # lose it
+                if not container:
+                    raise
+            finally:
+                self._state.waiting_receivers.pop(receive_event, None)
+
+            if container:
+                return container[0]
+            else:
+                raise EndOfStream
+
+    def clone(self) -> MemoryObjectReceiveStream[T_co]:
+        """
+        Create a clone of this receive stream.
+
+        Each clone can be closed separately. Only when all clones have been closed will the
+        receiving end of the memory stream be considered closed by the sending ends.
+
+        :return: the cloned stream
+
+        """
+        if self._closed:
+            raise ClosedResourceError
+
+        return MemoryObjectReceiveStream(_state=self._state)
+
+    def close(self) -> None:
+        """
+        Close the stream.
+
+        This works the exact same way as :meth:`aclose`, but is provided as a special case for the
+        benefit of synchronous callbacks.
+
+        """
+        if not self._closed:
+            self._closed = True
+            self._state.open_receive_channels -= 1
+            if self._state.open_receive_channels == 0:
+                send_events = list(self._state.waiting_senders.keys())
+                for event in send_events:
+                    event.set()
+
+    async def aclose(self) -> None:
+        self.close()
+
+    def statistics(self) -> MemoryObjectStreamStatistics:
+        """
+        Return statistics about the current state of this stream.
+
+        .. versionadded:: 3.0
+        """
+        return self._state.statistics()
+
+    def __enter__(self) -> MemoryObjectReceiveStream[T_co]:
+        return self
+
+    def __exit__(
+        self,
+        exc_type: type[BaseException] | None,
+        exc_val: BaseException | None,
+        exc_tb: TracebackType | None,
+    ) -> None:
+        self.close()
+
+
+@dataclass(eq=False)
+class MemoryObjectSendStream(Generic[T_contra], ObjectSendStream[T_contra]):
+    _state: MemoryObjectStreamState[T_contra]
+    _closed: bool = field(init=False, default=False)
+
+    def __post_init__(self) -> None:
+        self._state.open_send_channels += 1
+
+    def send_nowait(self, item: T_contra) -> DeprecatedAwaitable:
+        """
+        Send an item immediately if it can be done without waiting.
+
+        :param item: the item to send
+        :raises ~anyio.ClosedResourceError: if this send stream has been closed
+        :raises ~anyio.BrokenResourceError: if the stream has been closed from the
+            receiving end
+        :raises ~anyio.WouldBlock: if the buffer is full and there are no tasks waiting
+            to receive
+
+        """
+        if self._closed:
+            raise ClosedResourceError
+        if not self._state.open_receive_channels:
+            raise BrokenResourceError
+
+        if self._state.waiting_receivers:
+            receive_event, container = self._state.waiting_receivers.popitem(last=False)
+            container.append(item)
+            receive_event.set()
+        elif len(self._state.buffer) < self._state.max_buffer_size:
+            self._state.buffer.append(item)
+        else:
+            raise WouldBlock
+
+        return DeprecatedAwaitable(self.send_nowait)
+
+    async def send(self, item: T_contra) -> None:
+        await checkpoint()
+        try:
+            self.send_nowait(item)
+        except WouldBlock:
+            # Wait until there's someone on the receiving end
+            send_event = Event()
+            self._state.waiting_senders[send_event] = item
+            try:
+                await send_event.wait()
+            except BaseException:
+                self._state.waiting_senders.pop(send_event, None)  # type: ignore[arg-type]
+                raise
+
+            if self._state.waiting_senders.pop(send_event, None):  # type: ignore[arg-type]
+                raise BrokenResourceError
+
+    def clone(self) -> MemoryObjectSendStream[T_contra]:
+        """
+        Create a clone of this send stream.
+
+        Each clone can be closed separately. Only when all clones have been closed will the
+        sending end of the memory stream be considered closed by the receiving ends.
+
+        :return: the cloned stream
+
+        """
+        if self._closed:
+            raise ClosedResourceError
+
+        return MemoryObjectSendStream(_state=self._state)
+
+    def close(self) -> None:
+        """
+        Close the stream.
+
+        This works the exact same way as :meth:`aclose`, but is provided as a special case for the
+        benefit of synchronous callbacks.
+
+        """
+        if not self._closed:
+            self._closed = True
+            self._state.open_send_channels -= 1
+            if self._state.open_send_channels == 0:
+                receive_events = list(self._state.waiting_receivers.keys())
+                self._state.waiting_receivers.clear()
+                for event in receive_events:
+                    event.set()
+
+    async def aclose(self) -> None:
+        self.close()
+
+    def statistics(self) -> MemoryObjectStreamStatistics:
+        """
+        Return statistics about the current state of this stream.
+
+        .. versionadded:: 3.0
+        """
+        return self._state.statistics()
+
+    def __enter__(self) -> MemoryObjectSendStream[T_contra]:
+        return self
+
+    def __exit__(
+        self,
+        exc_type: type[BaseException] | None,
+        exc_val: BaseException | None,
+        exc_tb: TracebackType | None,
+    ) -> None:
+        self.close()

Backend/venv/lib/python3.12/site-packages/anyio/streams/stapled.py

@@ -0,0 +1,140 @@
+from __future__ import annotations
+
+from dataclasses import dataclass
+from typing import Any, Callable, Generic, Mapping, Sequence, TypeVar
+
+from ..abc import (
+    ByteReceiveStream,
+    ByteSendStream,
+    ByteStream,
+    Listener,
+    ObjectReceiveStream,
+    ObjectSendStream,
+    ObjectStream,
+    TaskGroup,
+)
+
+T_Item = TypeVar("T_Item")
+T_Stream = TypeVar("T_Stream")
+
+
+@dataclass(eq=False)
+class StapledByteStream(ByteStream):
+    """
+    Combines two byte streams into a single, bidirectional byte stream.
+
+    Extra attributes will be provided from both streams, with the receive stream providing the
+    values in case of a conflict.
+
+    :param ByteSendStream send_stream: the sending byte stream
+    :param ByteReceiveStream receive_stream: the receiving byte stream
+    """
+
+    send_stream: ByteSendStream
+    receive_stream: ByteReceiveStream
+
+    async def receive(self, max_bytes: int = 65536) -> bytes:
+        return await self.receive_stream.receive(max_bytes)
+
+    async def send(self, item: bytes) -> None:
+        await self.send_stream.send(item)
+
+    async def send_eof(self) -> None:
+        await self.send_stream.aclose()
+
+    async def aclose(self) -> None:
+        await self.send_stream.aclose()
+        await self.receive_stream.aclose()
+
+    @property
+    def extra_attributes(self) -> Mapping[Any, Callable[[], Any]]:
+        return {
+            **self.send_stream.extra_attributes,
+            **self.receive_stream.extra_attributes,
+        }
+
+
+@dataclass(eq=False)
+class StapledObjectStream(Generic[T_Item], ObjectStream[T_Item]):
+    """
+    Combines two object streams into a single, bidirectional object stream.
+
+    Extra attributes will be provided from both streams, with the receive stream providing the
+    values in case of a conflict.
+
+    :param ObjectSendStream send_stream: the sending object stream
+    :param ObjectReceiveStream receive_stream: the receiving object stream
+    """
+
+    send_stream: ObjectSendStream[T_Item]
+    receive_stream: ObjectReceiveStream[T_Item]
+
+    async def receive(self) -> T_Item:
+        return await self.receive_stream.receive()
+
+    async def send(self, item: T_Item) -> None:
+        await self.send_stream.send(item)
+
+    async def send_eof(self) -> None:
+        await self.send_stream.aclose()
+
+    async def aclose(self) -> None:
+        await self.send_stream.aclose()
+        await self.receive_stream.aclose()
+
+    @property
+    def extra_attributes(self) -> Mapping[Any, Callable[[], Any]]:
+        return {
+            **self.send_stream.extra_attributes,
+            **self.receive_stream.extra_attributes,
+        }
+
+
+@dataclass(eq=False)
+class MultiListener(Generic[T_Stream], Listener[T_Stream]):
+    """
+    Combines multiple listeners into one, serving connections from all of them at once.
+
+    Any MultiListeners in the given collection of listeners will have their listeners moved into
+    this one.
+
+    Extra attributes are provided from each listener, with each successive listener overriding any
+    conflicting attributes from the previous one.
+
+    :param listeners: listeners to serve
+    :type listeners: Sequence[Listener[T_Stream]]
+    """
+
+    listeners: Sequence[Listener[T_Stream]]
+
+    def __post_init__(self) -> None:
+        listeners: list[Listener[T_Stream]] = []
+        for listener in self.listeners:
+            if isinstance(listener, MultiListener):
+                listeners.extend(listener.listeners)
+                del listener.listeners[:]  # type: ignore[attr-defined]
+            else:
+                listeners.append(listener)
+
+        self.listeners = listeners
+
+    async def serve(
+        self, handler: Callable[[T_Stream], Any], task_group: TaskGroup | None = None
+    ) -> None:
+        from .. import create_task_group
+
+        async with create_task_group() as tg:
+            for listener in self.listeners:
+                tg.start_soon(listener.serve, handler, task_group)
+
+    async def aclose(self) -> None:
+        for listener in self.listeners:
+            await listener.aclose()
+
+    @property
+    def extra_attributes(self) -> Mapping[Any, Callable[[], Any]]:
+        attributes: dict = {}
+        for listener in self.listeners:
+            attributes.update(listener.extra_attributes)
+
+        return attributes

Backend/venv/lib/python3.12/site-packages/anyio/streams/text.py

@@ -0,0 +1,143 @@
+from __future__ import annotations
+
+import codecs
+from dataclasses import InitVar, dataclass, field
+from typing import Any, Callable, Mapping
+
+from ..abc import (
+    AnyByteReceiveStream,
+    AnyByteSendStream,
+    AnyByteStream,
+    ObjectReceiveStream,
+    ObjectSendStream,
+    ObjectStream,
+)
+
+
+@dataclass(eq=False)
+class TextReceiveStream(ObjectReceiveStream[str]):
+    """
+    Stream wrapper that decodes bytes to strings using the given encoding.
+
+    Decoding is done using :class:`~codecs.IncrementalDecoder` which returns any completely
+    received unicode characters as soon as they come in.
+
+    :param transport_stream: any bytes-based receive stream
+    :param encoding: character encoding to use for decoding bytes to strings (defaults to
+        ``utf-8``)
+    :param errors: handling scheme for decoding errors (defaults to ``strict``; see the
+        `codecs module documentation`_ for a comprehensive list of options)
+
+    .. _codecs module documentation: https://docs.python.org/3/library/codecs.html#codec-objects
+    """
+
+    transport_stream: AnyByteReceiveStream
+    encoding: InitVar[str] = "utf-8"
+    errors: InitVar[str] = "strict"
+    _decoder: codecs.IncrementalDecoder = field(init=False)
+
+    def __post_init__(self, encoding: str, errors: str) -> None:
+        decoder_class = codecs.getincrementaldecoder(encoding)
+        self._decoder = decoder_class(errors=errors)
+
+    async def receive(self) -> str:
+        while True:
+            chunk = await self.transport_stream.receive()
+            decoded = self._decoder.decode(chunk)
+            if decoded:
+                return decoded
+
+    async def aclose(self) -> None:
+        await self.transport_stream.aclose()
+        self._decoder.reset()
+
+    @property
+    def extra_attributes(self) -> Mapping[Any, Callable[[], Any]]:
+        return self.transport_stream.extra_attributes
+
+
+@dataclass(eq=False)
+class TextSendStream(ObjectSendStream[str]):
+    """
+    Sends strings to the wrapped stream as bytes using the given encoding.
+
+    :param AnyByteSendStream transport_stream: any bytes-based send stream
+    :param str encoding: character encoding to use for encoding strings to bytes (defaults to
+        ``utf-8``)
+    :param str errors: handling scheme for encoding errors (defaults to ``strict``; see the
+        `codecs module documentation`_ for a comprehensive list of options)
+
+    .. _codecs module documentation: https://docs.python.org/3/library/codecs.html#codec-objects
+    """
+
+    transport_stream: AnyByteSendStream
+    encoding: InitVar[str] = "utf-8"
+    errors: str = "strict"
+    _encoder: Callable[..., tuple[bytes, int]] = field(init=False)
+
+    def __post_init__(self, encoding: str) -> None:
+        self._encoder = codecs.getencoder(encoding)
+
+    async def send(self, item: str) -> None:
+        encoded = self._encoder(item, self.errors)[0]
+        await self.transport_stream.send(encoded)
+
+    async def aclose(self) -> None:
+        await self.transport_stream.aclose()
+
+    @property
+    def extra_attributes(self) -> Mapping[Any, Callable[[], Any]]:
+        return self.transport_stream.extra_attributes
+
+
+@dataclass(eq=False)
+class TextStream(ObjectStream[str]):
+    """
+    A bidirectional stream that decodes bytes to strings on receive and encodes strings to bytes on
+    send.
+
+    Extra attributes will be provided from both streams, with the receive stream providing the
+    values in case of a conflict.
+
+    :param AnyByteStream transport_stream: any bytes-based stream
+    :param str encoding: character encoding to use for encoding/decoding strings to/from bytes
+        (defaults to ``utf-8``)
+    :param str errors: handling scheme for encoding errors (defaults to ``strict``; see the
+        `codecs module documentation`_ for a comprehensive list of options)
+
+    .. _codecs module documentation: https://docs.python.org/3/library/codecs.html#codec-objects
+    """
+
+    transport_stream: AnyByteStream
+    encoding: InitVar[str] = "utf-8"
+    errors: InitVar[str] = "strict"
+    _receive_stream: TextReceiveStream = field(init=False)
+    _send_stream: TextSendStream = field(init=False)
+
+    def __post_init__(self, encoding: str, errors: str) -> None:
+        self._receive_stream = TextReceiveStream(
+            self.transport_stream, encoding=encoding, errors=errors
+        )
+        self._send_stream = TextSendStream(
+            self.transport_stream, encoding=encoding, errors=errors
+        )
+
+    async def receive(self) -> str:
+        return await self._receive_stream.receive()
+
+    async def send(self, item: str) -> None:
+        await self._send_stream.send(item)
+
+    async def send_eof(self) -> None:
+        await self.transport_stream.send_eof()
+
+    async def aclose(self) -> None:
+        await self._send_stream.aclose()
+        await self._receive_stream.aclose()
+
+    @property
+    def extra_attributes(self) -> Mapping[Any, Callable[[], Any]]:
+        return {
+            **self._send_stream.extra_attributes,
+            **self._receive_stream.extra_attributes,
+        }

Backend/venv/lib/python3.12/site-packages/anyio/streams/tls.py

@@ -0,0 +1,320 @@
+from __future__ import annotations
+
+import logging
+import re
+import ssl
+from dataclasses import dataclass
+from functools import wraps
+from typing import Any, Callable, Mapping, Tuple, TypeVar
+
+from .. import (
+    BrokenResourceError,
+    EndOfStream,
+    aclose_forcefully,
+    get_cancelled_exc_class,
+)
+from .._core._typedattr import TypedAttributeSet, typed_attribute
+from ..abc import AnyByteStream, ByteStream, Listener, TaskGroup
+
+T_Retval = TypeVar("T_Retval")
+_PCTRTT = Tuple[Tuple[str, str], ...]
+_PCTRTTT = Tuple[_PCTRTT, ...]
+
+
+class TLSAttribute(TypedAttributeSet):
+    """Contains Transport Layer Security related attributes."""
+
+    #: the selected ALPN protocol
+    alpn_protocol: str | None = typed_attribute()
+    #: the channel binding for type ``tls-unique``
+    channel_binding_tls_unique: bytes = typed_attribute()
+    #: the selected cipher
+    cipher: tuple[str, str, int] = typed_attribute()
+    #: the peer certificate in dictionary form (see :meth:`ssl.SSLSocket.getpeercert`
+    #: for more information)
+    peer_certificate: dict[str, str | _PCTRTTT | _PCTRTT] | None = typed_attribute()
+    #: the peer certificate in binary form
+    peer_certificate_binary: bytes | None = typed_attribute()
+    #: ``True`` if this is the server side of the connection
+    server_side: bool = typed_attribute()
+    #: ciphers shared by the client during the TLS handshake (``None`` if this is the
+    #: client side)
+    shared_ciphers: list[tuple[str, str, int]] | None = typed_attribute()
+    #: the :class:`~ssl.SSLObject` used for encryption
+    ssl_object: ssl.SSLObject = typed_attribute()
+    #: ``True`` if this stream does (and expects) a closing TLS handshake when the
+    #: stream is being closed
+    standard_compatible: bool = typed_attribute()
+    #: the TLS protocol version (e.g. ``TLSv1.2``)
+    tls_version: str = typed_attribute()
+
+
+@dataclass(eq=False)
+class TLSStream(ByteStream):
+    """
+    A stream wrapper that encrypts all sent data and decrypts received data.
+
+    This class has no public initializer; use :meth:`wrap` instead.
+    All extra attributes from :class:`~TLSAttribute` are supported.
+
+    :var AnyByteStream transport_stream: the wrapped stream
+
+    """
+
+    transport_stream: AnyByteStream
+    standard_compatible: bool
+    _ssl_object: ssl.SSLObject
+    _read_bio: ssl.MemoryBIO
+    _write_bio: ssl.MemoryBIO
+
+    @classmethod
+    async def wrap(
+        cls,
+        transport_stream: AnyByteStream,
+        *,
+        server_side: bool | None = None,
+        hostname: str | None = None,
+        ssl_context: ssl.SSLContext | None = None,
+        standard_compatible: bool = True,
+    ) -> TLSStream:
+        """
+        Wrap an existing stream with Transport Layer Security.
+
+        This performs a TLS handshake with the peer.
+
+        :param transport_stream: a bytes-transporting stream to wrap
+        :param server_side: ``True`` if this is the server side of the connection,
+            ``False`` if this is the client side (if omitted, will be set to ``False``
+            if ``hostname`` has been provided, ``False`` otherwise). Used only to create
+            a default context when an explicit context has not been provided.
+        :param hostname: host name of the peer (if host name checking is desired)
+        :param ssl_context: the SSLContext object to use (if not provided, a secure
+            default will be created)
+        :param standard_compatible: if ``False``, skip the closing handshake when closing the
+            connection, and don't raise an exception if the peer does the same
+        :raises ~ssl.SSLError: if the TLS handshake fails
+
+        """
+        if server_side is None:
+            server_side = not hostname
+
+        if not ssl_context:
+            purpose = (
+                ssl.Purpose.CLIENT_AUTH if server_side else ssl.Purpose.SERVER_AUTH
+            )
+            ssl_context = ssl.create_default_context(purpose)
+
+            # Re-enable detection of unexpected EOFs if it was disabled by Python
+            if hasattr(ssl, "OP_IGNORE_UNEXPECTED_EOF"):
+                ssl_context.options &= ~ssl.OP_IGNORE_UNEXPECTED_EOF
+
+        bio_in = ssl.MemoryBIO()
+        bio_out = ssl.MemoryBIO()
+        ssl_object = ssl_context.wrap_bio(
+            bio_in, bio_out, server_side=server_side, server_hostname=hostname
+        )
+        wrapper = cls(
+            transport_stream=transport_stream,
+            standard_compatible=standard_compatible,
+            _ssl_object=ssl_object,
+            _read_bio=bio_in,
+            _write_bio=bio_out,
+        )
+        await wrapper._call_sslobject_method(ssl_object.do_handshake)
+        return wrapper
+
+    async def _call_sslobject_method(
+        self, func: Callable[..., T_Retval], *args: object
+    ) -> T_Retval:
+        while True:
+            try:
+                result = func(*args)
+            except ssl.SSLWantReadError:
+                try:
+                    # Flush any pending writes first
+                    if self._write_bio.pending:
+                        await self.transport_stream.send(self._write_bio.read())
+
+                    data = await self.transport_stream.receive()
+                except EndOfStream:
+                    self._read_bio.write_eof()
+                except OSError as exc:
+                    self._read_bio.write_eof()
+                    self._write_bio.write_eof()
+                    raise BrokenResourceError from exc
+                else:
+                    self._read_bio.write(data)
+            except ssl.SSLWantWriteError:
+                await self.transport_stream.send(self._write_bio.read())
+            except ssl.SSLSyscallError as exc:
+                self._read_bio.write_eof()
+                self._write_bio.write_eof()
+                raise BrokenResourceError from exc
+            except ssl.SSLError as exc:
+                self._read_bio.write_eof()
+                self._write_bio.write_eof()
+                if (
+                    isinstance(exc, ssl.SSLEOFError)
+                    or "UNEXPECTED_EOF_WHILE_READING" in exc.strerror
+                ):
+                    if self.standard_compatible:
+                        raise BrokenResourceError from exc
+                    else:
+                        raise EndOfStream from None
+
+                raise
+            else:
+                # Flush any pending writes first
+                if self._write_bio.pending:
+                    await self.transport_stream.send(self._write_bio.read())
+
+                return result
+
+    async def unwrap(self) -> tuple[AnyByteStream, bytes]:
+        """
+        Does the TLS closing handshake.
+
+        :return: a tuple of (wrapped byte stream, bytes left in the read buffer)
+
+        """
+        await self._call_sslobject_method(self._ssl_object.unwrap)
+        self._read_bio.write_eof()
+        self._write_bio.write_eof()
+        return self.transport_stream, self._read_bio.read()
+
+    async def aclose(self) -> None:
+        if self.standard_compatible:
+            try:
+                await self.unwrap()
+            except BaseException:
+                await aclose_forcefully(self.transport_stream)
+                raise
+
+        await self.transport_stream.aclose()
+
+    async def receive(self, max_bytes: int = 65536) -> bytes:
+        data = await self._call_sslobject_method(self._ssl_object.read, max_bytes)
+        if not data:
+            raise EndOfStream
+
+        return data
+
+    async def send(self, item: bytes) -> None:
+        await self._call_sslobject_method(self._ssl_object.write, item)
+
+    async def send_eof(self) -> None:
+        tls_version = self.extra(TLSAttribute.tls_version)
+        match = re.match(r"TLSv(\d+)(?:\.(\d+))?", tls_version)
+        if match:
+            major, minor = int(match.group(1)), int(match.group(2) or 0)
+            if (major, minor) < (1, 3):
+                raise NotImplementedError(
+                    f"send_eof() requires at least TLSv1.3; current "
+                    f"session uses {tls_version}"
+                )
+
+        raise NotImplementedError(
+            "send_eof() has not yet been implemented for TLS streams"
+        )
+
+    @property
+    def extra_attributes(self) -> Mapping[Any, Callable[[], Any]]:
+        return {
+            **self.transport_stream.extra_attributes,
+            TLSAttribute.alpn_protocol: self._ssl_object.selected_alpn_protocol,
+            TLSAttribute.channel_binding_tls_unique: self._ssl_object.get_channel_binding,
+            TLSAttribute.cipher: self._ssl_object.cipher,
+            TLSAttribute.peer_certificate: lambda: self._ssl_object.getpeercert(False),
+            TLSAttribute.peer_certificate_binary: lambda: self._ssl_object.getpeercert(
+                True
+            ),
+            TLSAttribute.server_side: lambda: self._ssl_object.server_side,
+            TLSAttribute.shared_ciphers: lambda: self._ssl_object.shared_ciphers()
+            if self._ssl_object.server_side
+            else None,
+            TLSAttribute.standard_compatible: lambda: self.standard_compatible,
+            TLSAttribute.ssl_object: lambda: self._ssl_object,
+            TLSAttribute.tls_version: self._ssl_object.version,
+        }
+
+
+@dataclass(eq=False)
+class TLSListener(Listener[TLSStream]):
+    """
+    A convenience listener that wraps another listener and auto-negotiates a TLS session on every
+    accepted connection.
+
+    If the TLS handshake times out or raises an exception, :meth:`handle_handshake_error` is
+    called to do whatever post-mortem processing is deemed necessary.
+
+    Supports only the :attr:`~TLSAttribute.standard_compatible` extra attribute.
+
+    :param Listener listener: the listener to wrap
+    :param ssl_context: the SSL context object
+    :param standard_compatible: a flag passed through to :meth:`TLSStream.wrap`
+    :param handshake_timeout: time limit for the TLS handshake
+        (passed to :func:`~anyio.fail_after`)
+    """
+
+    listener: Listener[Any]
+    ssl_context: ssl.SSLContext
+    standard_compatible: bool = True
+    handshake_timeout: float = 30
+
+    @staticmethod
+    async def handle_handshake_error(exc: BaseException, stream: AnyByteStream) -> None:
+        """
+        Handle an exception raised during the TLS handshake.
+
+        This method does 3 things:
+
+        #. Forcefully closes the original stream
+        #. Logs the exception (unless it was a cancellation exception) using the
+           ``anyio.streams.tls`` logger
+        #. Reraises the exception if it was a base exception or a cancellation exception
+
+        :param exc: the exception
+        :param stream: the original stream
+
+        """
+        await aclose_forcefully(stream)
+
+        # Log all except cancellation exceptions
+        if not isinstance(exc, get_cancelled_exc_class()):
+            logging.getLogger(__name__).exception("Error during TLS handshake")
+
+        # Only reraise base exceptions and cancellation exceptions
+        if not isinstance(exc, Exception) or isinstance(exc, get_cancelled_exc_class()):
+            raise
+
+    async def serve(
+        self,
+        handler: Callable[[TLSStream], Any],
+        task_group: TaskGroup | None = None,
+    ) -> None:
+        @wraps(handler)
+        async def handler_wrapper(stream: AnyByteStream) -> None:
+            from .. import fail_after
+
+            try:
+                with fail_after(self.handshake_timeout):
+                    wrapped_stream = await TLSStream.wrap(
+                        stream,
+                        ssl_context=self.ssl_context,
+                        standard_compatible=self.standard_compatible,
+                    )
+            except BaseException as exc:
+                await self.handle_handshake_error(exc, stream)
+            else:
+                await handler(wrapped_stream)
+
+        await self.listener.serve(handler_wrapper, task_group)
+
+    async def aclose(self) -> None:
+        await self.listener.aclose()
+
+    @property
+    def extra_attributes(self) -> Mapping[Any, Callable[[], Any]]:
+        return {
+            TLSAttribute.standard_compatible: lambda: self.standard_compatible,
+        }

Backend/venv/lib/python3.12/site-packages/anyio/to_process.py

@@ -0,0 +1,249 @@
+from __future__ import annotations
+
+import os
+import pickle
+import subprocess
+import sys
+from collections import deque
+from importlib.util import module_from_spec, spec_from_file_location
+from typing import Callable, TypeVar, cast
+
+from ._core._eventloop import current_time, get_asynclib, get_cancelled_exc_class
+from ._core._exceptions import BrokenWorkerProcess
+from ._core._subprocesses import open_process
+from ._core._synchronization import CapacityLimiter
+from ._core._tasks import CancelScope, fail_after
+from .abc import ByteReceiveStream, ByteSendStream, Process
+from .lowlevel import RunVar, checkpoint_if_cancelled
+from .streams.buffered import BufferedByteReceiveStream
+
+WORKER_MAX_IDLE_TIME = 300  # 5 minutes
+
+T_Retval = TypeVar("T_Retval")
+_process_pool_workers: RunVar[set[Process]] = RunVar("_process_pool_workers")
+_process_pool_idle_workers: RunVar[deque[tuple[Process, float]]] = RunVar(
+    "_process_pool_idle_workers"
+)
+_default_process_limiter: RunVar[CapacityLimiter] = RunVar("_default_process_limiter")
+
+
+async def run_sync(
+    func: Callable[..., T_Retval],
+    *args: object,
+    cancellable: bool = False,
+    limiter: CapacityLimiter | None = None,
+) -> T_Retval:
+    """
+    Call the given function with the given arguments in a worker process.
+
+    If the ``cancellable`` option is enabled and the task waiting for its completion is cancelled,
+    the worker process running it will be abruptly terminated using SIGKILL (or
+    ``terminateProcess()`` on Windows).
+
+    :param func: a callable
+    :param args: positional arguments for the callable
+    :param cancellable: ``True`` to allow cancellation of the operation while it's running
+    :param limiter: capacity limiter to use to limit the total amount of processes running
+        (if omitted, the default limiter is used)
+    :return: an awaitable that yields the return value of the function.
+
+    """
+
+    async def send_raw_command(pickled_cmd: bytes) -> object:
+        try:
+            await stdin.send(pickled_cmd)
+            response = await buffered.receive_until(b"\n", 50)
+            status, length = response.split(b" ")
+            if status not in (b"RETURN", b"EXCEPTION"):
+                raise RuntimeError(
+                    f"Worker process returned unexpected response: {response!r}"
+                )
+
+            pickled_response = await buffered.receive_exactly(int(length))
+        except BaseException as exc:
+            workers.discard(process)
+            try:
+                process.kill()
+                with CancelScope(shield=True):
+                    await process.aclose()
+            except ProcessLookupError:
+                pass
+
+            if isinstance(exc, get_cancelled_exc_class()):
+                raise
+            else:
+                raise BrokenWorkerProcess from exc
+
+        retval = pickle.loads(pickled_response)
+        if status == b"EXCEPTION":
+            assert isinstance(retval, BaseException)
+            raise retval
+        else:
+            return retval
+
+    # First pickle the request before trying to reserve a worker process
+    await checkpoint_if_cancelled()
+    request = pickle.dumps(("run", func, args), protocol=pickle.HIGHEST_PROTOCOL)
+
+    # If this is the first run in this event loop thread, set up the necessary variables
+    try:
+        workers = _process_pool_workers.get()
+        idle_workers = _process_pool_idle_workers.get()
+    except LookupError:
+        workers = set()
+        idle_workers = deque()
+        _process_pool_workers.set(workers)
+        _process_pool_idle_workers.set(idle_workers)
+        get_asynclib().setup_process_pool_exit_at_shutdown(workers)
+
+    async with (limiter or current_default_process_limiter()):
+        # Pop processes from the pool (starting from the most recently used) until we find one that
+        # hasn't exited yet
+        process: Process
+        while idle_workers:
+            process, idle_since = idle_workers.pop()
+            if process.returncode is None:
+                stdin = cast(ByteSendStream, process.stdin)
+                buffered = BufferedByteReceiveStream(
+                    cast(ByteReceiveStream, process.stdout)
+                )
+
+                # Prune any other workers that have been idle for WORKER_MAX_IDLE_TIME seconds or
+                # longer
+                now = current_time()
+                killed_processes: list[Process] = []
+                while idle_workers:
+                    if now - idle_workers[0][1] < WORKER_MAX_IDLE_TIME:
+                        break
+
+                    process, idle_since = idle_workers.popleft()
+                    process.kill()
+                    workers.remove(process)
+                    killed_processes.append(process)
+
+                with CancelScope(shield=True):
+                    for process in killed_processes:
+                        await process.aclose()
+
+                break
+
+            workers.remove(process)
+        else:
+            command = [sys.executable, "-u", "-m", __name__]
+            process = await open_process(
+                command, stdin=subprocess.PIPE, stdout=subprocess.PIPE
+            )
+            try:
+                stdin = cast(ByteSendStream, process.stdin)
+                buffered = BufferedByteReceiveStream(
+                    cast(ByteReceiveStream, process.stdout)
+                )
+                with fail_after(20):
+                    message = await buffered.receive(6)
+
+                if message != b"READY\n":
+                    raise BrokenWorkerProcess(
+                        f"Worker process returned unexpected response: {message!r}"
+                    )
+
+                main_module_path = getattr(sys.modules["__main__"], "__file__", None)
+                pickled = pickle.dumps(
+                    ("init", sys.path, main_module_path),
+                    protocol=pickle.HIGHEST_PROTOCOL,
+                )
+                await send_raw_command(pickled)
+            except (BrokenWorkerProcess, get_cancelled_exc_class()):
+                raise
+            except BaseException as exc:
+                process.kill()
+                raise BrokenWorkerProcess(
+                    "Error during worker process initialization"
+                ) from exc
+
+            workers.add(process)
+
+        with CancelScope(shield=not cancellable):
+            try:
+                return cast(T_Retval, await send_raw_command(request))
+            finally:
+                if process in workers:
+                    idle_workers.append((process, current_time()))
+
+
+def current_default_process_limiter() -> CapacityLimiter:
+    """
+    Return the capacity limiter that is used by default to limit the number of worker processes.
+
+    :return: a capacity limiter object
+
+    """
+    try:
+        return _default_process_limiter.get()
+    except LookupError:
+        limiter = CapacityLimiter(os.cpu_count() or 2)
+        _default_process_limiter.set(limiter)
+        return limiter
+
+
+def process_worker() -> None:
+    # Redirect standard streams to os.devnull so that user code won't interfere with the
+    # parent-worker communication
+    stdin = sys.stdin
+    stdout = sys.stdout
+    sys.stdin = open(os.devnull)
+    sys.stdout = open(os.devnull, "w")
+
+    stdout.buffer.write(b"READY\n")
+    while True:
+        retval = exception = None
+        try:
+            command, *args = pickle.load(stdin.buffer)
+        except EOFError:
+            return
+        except BaseException as exc:
+            exception = exc
+        else:
+            if command == "run":
+                func, args = args
+                try:
+                    retval = func(*args)
+                except BaseException as exc:
+                    exception = exc
+            elif command == "init":
+                main_module_path: str | None
+                sys.path, main_module_path = args
+                del sys.modules["__main__"]
+                if main_module_path:
+                    # Load the parent's main module but as __mp_main__ instead of __main__
+                    # (like multiprocessing does) to avoid infinite recursion
+                    try:
+                        spec = spec_from_file_location("__mp_main__", main_module_path)
+                        if spec and spec.loader:
+                            main = module_from_spec(spec)
+                            spec.loader.exec_module(main)
+                            sys.modules["__main__"] = main
+                    except BaseException as exc:
+                        exception = exc
+
+        try:
+            if exception is not None:
+                status = b"EXCEPTION"
+                pickled = pickle.dumps(exception, pickle.HIGHEST_PROTOCOL)
+            else:
+                status = b"RETURN"
+                pickled = pickle.dumps(retval, pickle.HIGHEST_PROTOCOL)
+        except BaseException as exc:
+            exception = exc
+            status = b"EXCEPTION"
+            pickled = pickle.dumps(exc, pickle.HIGHEST_PROTOCOL)
+
+        stdout.buffer.write(b"%s %d\n" % (status, len(pickled)))
+        stdout.buffer.write(pickled)
+
+        # Respect SIGTERM
+        if isinstance(exception, SystemExit):
+            raise exception
+
+
+if __name__ == "__main__":
+    process_worker()

Backend/venv/lib/python3.12/site-packages/anyio/to_thread.py

@@ -0,0 +1,67 @@
+from __future__ import annotations
+
+from typing import Callable, TypeVar
+from warnings import warn
+
+from ._core._eventloop import get_asynclib
+from .abc import CapacityLimiter
+
+T_Retval = TypeVar("T_Retval")
+
+
+async def run_sync(
+    func: Callable[..., T_Retval],
+    *args: object,
+    cancellable: bool = False,
+    limiter: CapacityLimiter | None = None,
+) -> T_Retval:
+    """
+    Call the given function with the given arguments in a worker thread.
+
+    If the ``cancellable`` option is enabled and the task waiting for its completion is cancelled,
+    the thread will still run its course but its return value (or any raised exception) will be
+    ignored.
+
+    :param func: a callable
+    :param args: positional arguments for the callable
+    :param cancellable: ``True`` to allow cancellation of the operation
+    :param limiter: capacity limiter to use to limit the total amount of threads running
+        (if omitted, the default limiter is used)
+    :return: an awaitable that yields the return value of the function.
+
+    """
+    return await get_asynclib().run_sync_in_worker_thread(
+        func, *args, cancellable=cancellable, limiter=limiter
+    )
+
+
+async def run_sync_in_worker_thread(
+    func: Callable[..., T_Retval],
+    *args: object,
+    cancellable: bool = False,
+    limiter: CapacityLimiter | None = None,
+) -> T_Retval:
+    warn(
+        "run_sync_in_worker_thread() has been deprecated, use anyio.to_thread.run_sync() instead",
+        DeprecationWarning,
+    )
+    return await run_sync(func, *args, cancellable=cancellable, limiter=limiter)
+
+
+def current_default_thread_limiter() -> CapacityLimiter:
+    """
+    Return the capacity limiter that is used by default to limit the number of concurrent threads.
+
+    :return: a capacity limiter object
+
+    """
+    return get_asynclib().current_default_thread_limiter()
+
+
+def current_default_worker_thread_limiter() -> CapacityLimiter:
+    warn(
+        "current_default_worker_thread_limiter() has been deprecated, "
+        "use anyio.to_thread.current_default_thread_limiter() instead",
+        DeprecationWarning,
+    )
+    return current_default_thread_limiter()