Fix allowlist entries in asyncio.windows_events (#10824)

And fix the return value of return value of `IocpProactor.recvfrom_into()`, which was incorrect

Co-authored-by: Jelle Zijlstra <jelle.zijlstra@gmail.com>

stdlib/asyncio/windows_events.pyi

@@ -1,6 +1,6 @@
 import socket
 import sys
-from _typeshed import Incomplete, WriteableBuffer
+from _typeshed import Incomplete, ReadableBuffer, WriteableBuffer
 from collections.abc import Callable
 from typing import IO, Any, ClassVar, NoReturn
 from typing_extensions import Literal
@@ -48,6 +48,12 @@ if sys.platform == "win32":
         def select(self, timeout: int | None = None) -> list[futures.Future[Any]]: ...
         def recv(self, conn: socket.socket, nbytes: int, flags: int = 0) -> futures.Future[bytes]: ...
         def recv_into(self, conn: socket.socket, buf: WriteableBuffer, flags: int = 0) -> futures.Future[Any]: ...
+        def recvfrom(
+            self, conn: socket.socket, nbytes: int, flags: int = 0
+        ) -> futures.Future[tuple[bytes, socket._RetAddress]]: ...
+        def sendto(
+            self, conn: socket.socket, buf: ReadableBuffer, flags: int = 0, addr: socket._Address | None = None
+        ) -> futures.Future[int]: ...
         def send(self, conn: socket.socket, buf: WriteableBuffer, flags: int = 0) -> futures.Future[Any]: ...
         def accept(self, listener: socket.socket) -> futures.Future[Any]: ...
         def connect(
@@ -63,7 +69,7 @@ if sys.platform == "win32":
         if sys.version_info >= (3, 11):
             def recvfrom_into(
                 self, conn: socket.socket, buf: WriteableBuffer, flags: int = 0
-            ) -> tuple[int, socket._RetAddress]: ...
+            ) -> futures.Future[tuple[int, socket._RetAddress]]: ...
     SelectorEventLoop = _WindowsSelectorEventLoop
 
     class WindowsSelectorEventLoopPolicy(events.BaseDefaultEventLoopPolicy):

tests/stubtest_allowlists/win32.txt

@@ -10,10 +10,6 @@ _winapi.CreateFileMapping
 _winapi.MapViewOfFile
 _winapi.OpenFileMapping
 _winapi.VirtualQuerySize
-asyncio.IocpProactor.recvfrom
-asyncio.IocpProactor.sendto
-asyncio.windows_events.IocpProactor.recvfrom
-asyncio.windows_events.IocpProactor.sendto
 msvcrt.SetErrorMode
 ssl.SSLSocket.recvmsg
 ssl.SSLSocket.recvmsg_into