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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)