Method resolve

python/python3/tornado/netutil.py:351–375

Resolves an address. The ``host`` argument is a string which may be a hostname or a literal IP address. Returns a `.Future` whose result is a list of (family, address) pairs, where address is a tuple suitable to pass to `socket.connect <socket.socket.connect

(
        self, host: str, port: int, family: socket.AddressFamily = socket.AF_UNSPEC
    )

        return DefaultLoopResolver

    def resolve(
        self, host: str, port: int, family: socket.AddressFamily = socket.AF_UNSPEC
    ) -> Awaitable[List[Tuple[int, Any]]]:
        """Resolves an address.

        The ``host`` argument is a string which may be a hostname or a
        literal IP address.

        Returns a `.Future` whose result is a list of (family,
        address) pairs, where address is a tuple suitable to pass to
        `socket.connect <socket.socket.connect>` (i.e. a ``(host,
        port)`` pair for IPv4; additional fields may be present for
        IPv6). If a ``callback`` is passed, it will be run with the
        result as an argument when it is complete.

        :raises IOError: if the address cannot be resolved.

        .. versionchanged:: 4.4
           Standardized all implementations to raise `IOError`.

        .. versionchanged:: 6.0 The ``callback`` argument was removed.
           Use the returned awaitable object instead.

        """
        raise NotImplementedError()

    def close(self) -> None:
        """Closes the `Resolver`, freeing any resources used.