Remove resolving IP to DNS for nextURI

prestodb/redirect.py

@@ -9,16 +9,14 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
-from __future__ import absolute_import
-from __future__ import division
-from __future__ import print_function
+from __future__ import absolute_import, division, print_function
 
 import abc
-
-from six import with_metaclass
 import ipaddress
 import socket
 from typing import Any, Text  # NOQA
+
+from six import with_metaclass
 from six.moves.urllib_parse import urlparse
 
 
@@ -28,22 +26,9 @@ def handle(self, url):
         pass
 
 
-def _normalize_url_with_hostname(url):
-    # type: (Text) -> Text
-    # TODO: replace urlparse by more robust utf-8 handling code
-    parsed = urlparse(url.encode("utf-8"))
-    hostname = parsed.hostname.decode("utf-8")  # type: ignore
-    try:
-        ipaddress.ip_address(hostname)
-        hostname = socket.gethostbyaddr(hostname)[0].encode("utf-8")
-    except ValueError:
-        return url
-    return parsed._replace(netloc=b"%s:%d" % (hostname, parsed.port)).geturl()
-
-
 class GatewayRedirectHandler(RedirectHandler):
     def handle(self, url):
         # type: (Text) -> Text
         if url is None:
             return None
-        return _normalize_url_with_hostname(url)
+        return url