Re-organize directory structure (#4971)

See discussion in #2491

Co-authored-by: Ivan Levkivskyi <ilevkivskyi@dropbox.com>

stdlib/asyncio/trsock.pyi

@@ -0,0 +1,86 @@
+import socket
+import sys
+from types import TracebackType
+from typing import Any, BinaryIO, Iterable, List, NoReturn, Optional, Tuple, Type, Union, overload
+
+if sys.version_info >= (3, 8):
+    # These are based in socket, maybe move them out into _typeshed.pyi or such
+    _Address = Union[tuple, str]
+    _RetAddress = Any
+    _WriteBuffer = Union[bytearray, memoryview]
+    _CMSG = Tuple[int, int, bytes]
+    class TransportSocket:
+        def __init__(self, sock: socket.socket) -> None: ...
+        def _na(self, what: str) -> None: ...
+        @property
+        def family(self) -> int: ...
+        @property
+        def type(self) -> int: ...
+        @property
+        def proto(self) -> int: ...
+        def __getstate__(self) -> NoReturn: ...
+        def fileno(self) -> int: ...
+        def dup(self) -> socket.socket: ...
+        def get_inheritable(self) -> bool: ...
+        def shutdown(self, how: int) -> None: ...
+        @overload
+        def getsockopt(self, level: int, optname: int) -> int: ...
+        @overload
+        def getsockopt(self, level: int, optname: int, buflen: int) -> bytes: ...
+        @overload
+        def setsockopt(self, level: int, optname: int, value: Union[int, bytes]) -> None: ...
+        @overload
+        def setsockopt(self, level: int, optname: int, value: None, optlen: int) -> None: ...
+        def getpeername(self) -> _RetAddress: ...
+        def getsockname(self) -> _RetAddress: ...
+        def getsockbyname(self) -> NoReturn: ...  # This method doesn't exist on socket, yet is passed through?
+        def accept(self) -> Tuple[socket.socket, _RetAddress]: ...
+        def connect(self, address: Union[_Address, bytes]) -> None: ...
+        def connect_ex(self, address: Union[_Address, bytes]) -> int: ...
+        def bind(self, address: Union[_Address, bytes]) -> None: ...
+        if sys.platform == "win32":
+            def ioctl(self, control: int, option: Union[int, Tuple[int, int, int], bool]) -> None: ...
+        else:
+            def ioctl(self, control: int, option: Union[int, Tuple[int, int, int], bool]) -> NoReturn: ...
+        def listen(self, __backlog: int = ...) -> None: ...
+        def makefile(self) -> BinaryIO: ...
+        def sendfile(self, file: BinaryIO, offset: int = ..., count: Optional[int] = ...) -> int: ...
+        def close(self) -> None: ...
+        def detach(self) -> int: ...
+        if sys.platform == "linux":
+            def sendmsg_afalg(
+                self, msg: Iterable[bytes] = ..., *, op: int, iv: Any = ..., assoclen: int = ..., flags: int = ...
+            ) -> int: ...
+        else:
+            def sendmsg_afalg(
+                self, msg: Iterable[bytes] = ..., *, op: int, iv: Any = ..., assoclen: int = ..., flags: int = ...
+            ) -> NoReturn: ...
+        def sendmsg(
+            self, __buffers: Iterable[bytes], __ancdata: Iterable[_CMSG] = ..., __flags: int = ..., __address: _Address = ...
+        ) -> int: ...
+        @overload
+        def sendto(self, data: bytes, address: _Address) -> int: ...
+        @overload
+        def sendto(self, data: bytes, flags: int, address: _Address) -> int: ...
+        def send(self, data: bytes, flags: int = ...) -> int: ...
+        def sendall(self, data: bytes, flags: int = ...) -> None: ...
+        def set_inheritable(self, inheritable: bool) -> None: ...
+        if sys.platform == "win32":
+            def share(self, process_id: int) -> bytes: ...
+        else:
+            def share(self, process_id: int) -> NoReturn: ...
+        def recv_into(self, buffer: _WriteBuffer, nbytes: int = ..., flags: int = ...) -> int: ...
+        def recvfrom_into(self, buffer: _WriteBuffer, nbytes: int = ..., flags: int = ...) -> Tuple[int, _RetAddress]: ...
+        def recvmsg_into(
+            self, __buffers: Iterable[_WriteBuffer], __ancbufsize: int = ..., __flags: int = ...
+        ) -> Tuple[int, List[_CMSG], int, Any]: ...
+        def recvmsg(self, __bufsize: int, __ancbufsize: int = ..., __flags: int = ...) -> Tuple[bytes, List[_CMSG], int, Any]: ...
+        def recvfrom(self, bufsize: int, flags: int = ...) -> Tuple[bytes, _RetAddress]: ...
+        def recv(self, bufsize: int, flags: int = ...) -> bytes: ...
+        def settimeout(self, value: Optional[float]) -> None: ...
+        def gettimeout(self) -> Optional[float]: ...
+        def setblocking(self, flag: bool) -> None: ...
+        def __enter__(self) -> socket.socket: ...
+        def __exit__(
+            self, exc_type: Optional[Type[BaseException]], exc_val: Optional[BaseException], exc_tb: Optional[TracebackType]
+        ) -> None: ...