code: async def _detect_proxy(self):
          '''Return True if it appears we can connect to a SOCKS proxy,
          otherwise False.
          '''
          if self.protocol is SOCKS4a:
              remote_address = NetAddress('www.apple.com', 80)
          else:
              remote_address = NetAddress('8.8.8.8', 53)
  
          sock = await self._connect_one(remote_address)
          if isinstance(sock, socket.socket):
              sock.close()
              return True
  
          # SOCKSFailure indicates something failed, but that we are likely talking to a
          # proxy
          return isinstance(sock, SOCKSFailureync def _detect_proxy(self):
          '''Return True if it appears we can connect to a SOCKS proxy,
          otherwise False.
          '''
          if self.protocol is SOCKS4a:
              remote_address = NetAddress('www.apple.com', 80)
          else:
              remote_address = NetAddress('8.8.8.8', 53)
  
          sock = await self._connect_one(remote_address)
          if isinstance(sock, socket.socket):
              sock.close()
              return True
  
          # SOCKSFailure indicates something failed, but that we are likely talking to a
          # proxy
          return isinstance(sock, SOCKSFailure)
docs: Return True if it appears we can connect to a SOCKS proxy,
          otherwise False.