import socket
import warnings


class TransportSocket:

 """A socket-like wrapper for exposing real transport sockets.

 These objects can be safely returned by APIs like
 `transport.get_extra_info('socket')`. All potentially disruptive
 operations (like "socket.close()") are banned.
 """

 __slots__ = ('_sock',)

 def __init__(self, sock: socket.socket):
 self._sock = sock

 def _na(self, what):
 warnings.warn(
 f"Using {what} on sockets returned from get_extra_info('socket') "
 f"will be prohibited in asyncio 3.9. Please report your use case "
 f"to bugs.python.org.",
 DeprecationWarning, source=self)

 @property
 def family(self):
 return self._sock.family

 @property
 def type(self):
 return self._sock.type

 @property
 def proto(self):
 return self._sock.proto

 def __repr__(self):
 s = (
 f"<asyncio.TransportSocket fd={self.fileno()}, "
 f"family={self.family!s}, type={self.type!s}, "
 f"proto={self.proto}"
 )

 if self.fileno() != -1:
 try:
 laddr = self.getsockname()
 if laddr:
 s = f"{s}, laddr={laddr}"
 except socket.error:
 pass
 try:
 raddr = self.getpeername()
 if raddr:
 s = f"{s}, raddr={raddr}"
 except socket.error:
 pass

 return f"{s}>"

 def __getstate__(self):
 raise TypeError("Cannot serialize asyncio.TransportSocket object")

 def fileno(self):
 return self._sock.fileno()

 def dup(self):
 return self._sock.dup()

 def get_inheritable(self):
 return self._sock.get_inheritable()

 def shutdown(self, how):
 # asyncio doesn't currently provide a high-level transport API
 # to shutdown the connection.
 self._sock.shutdown(how)

 def getsockopt(self, *args, **kwargs):
 return self._sock.getsockopt(*args, **kwargs)

 def setsockopt(self, *args, **kwargs):
 self._sock.setsockopt(*args, **kwargs)

 def getpeername(self):
 return self._sock.getpeername()

 def getsockname(self):
 return self._sock.getsockname()

 def getsockbyname(self):
 return self._sock.getsockbyname()

 def accept(self):
 self._na('accept() method')
 return self._sock.accept()

 def connect(self, *args, **kwargs):
 self._na('connect() method')
 return self._sock.connect(*args, **kwargs)

 def connect_ex(self, *args, **kwargs):
 self._na('connect_ex() method')
 return self._sock.connect_ex(*args, **kwargs)

 def bind(self, *args, **kwargs):
 self._na('bind() method')
 return self._sock.bind(*args, **kwargs)

 def ioctl(self, *args, **kwargs):
 self._na('ioctl() method')
 return self._sock.ioctl(*args, **kwargs)

 def listen(self, *args, **kwargs):
 self._na('listen() method')
 return self._sock.listen(*args, **kwargs)

 def makefile(self):
 self._na('makefile() method')
 return self._sock.makefile()

 def sendfile(self, *args, **kwargs):
 self._na('sendfile() method')
 return self._sock.sendfile(*args, **kwargs)

 def close(self):
 self._na('close() method')
 return self._sock.close()

 def detach(self):
 self._na('detach() method')
 return self._sock.detach()

 def sendmsg_afalg(self, *args, **kwargs):
 self._na('sendmsg_afalg() method')
 return self._sock.sendmsg_afalg(*args, **kwargs)

 def sendmsg(self, *args, **kwargs):
 self._na('sendmsg() method')
 return self._sock.sendmsg(*args, **kwargs)

 def sendto(self, *args, **kwargs):
 self._na('sendto() method')
 return self._sock.sendto(*args, **kwargs)

 def send(self, *args, **kwargs):
 self._na('send() method')
 return self._sock.send(*args, **kwargs)

 def sendall(self, *args, **kwargs):
 self._na('sendall() method')
 return self._sock.sendall(*args, **kwargs)

 def set_inheritable(self, *args, **kwargs):
 self._na('set_inheritable() method')
 return self._sock.set_inheritable(*args, **kwargs)

 def share(self, process_id):
 self._na('share() method')
 return self._sock.share(process_id)

 def recv_into(self, *args, **kwargs):
 self._na('recv_into() method')
 return self._sock.recv_into(*args, **kwargs)

 def recvfrom_into(self, *args, **kwargs):
 self._na('recvfrom_into() method')
 return self._sock.recvfrom_into(*args, **kwargs)

 def recvmsg_into(self, *args, **kwargs):
 self._na('recvmsg_into() method')
 return self._sock.recvmsg_into(*args, **kwargs)

 def recvmsg(self, *args, **kwargs):
 self._na('recvmsg() method')
 return self._sock.recvmsg(*args, **kwargs)

 def recvfrom(self, *args, **kwargs):
 self._na('recvfrom() method')
 return self._sock.recvfrom(*args, **kwargs)

 def recv(self, *args, **kwargs):
 self._na('recv() method')
 return self._sock.recv(*args, **kwargs)

 def settimeout(self, value):
 if value == 0:
 return
 raise ValueError(
 'settimeout(): only 0 timeout is allowed on transport sockets')

 def gettimeout(self):
 return 0

 def setblocking(self, flag):
 if not flag:
 return
 raise ValueError(
 'setblocking(): transport sockets cannot be blocking')

 def __enter__(self):
 self._na('context manager protocol')
 return self._sock.__enter__()

 def __exit__(self, *err):
 self._na('context manager protocol')
 return self._sock.__exit__(*err)