Better exception for bad URL parse (#2415)

sanic/exceptions.py

@@ -51,6 +51,10 @@ class InvalidUsage(SanicException):
     quiet = True
 
 
+class BadURL(InvalidUsage):
+    ...
+
+
 class MethodNotSupported(SanicException):
     """
     **Status**: 405 Method Not Allowed

sanic/request.py

@@ -30,10 +30,11 @@ from types import SimpleNamespace
 from urllib.parse import parse_qs, parse_qsl, unquote, urlunparse
 
 from httptools import parse_url  # type: ignore
+from httptools.parser.errors import HttpParserInvalidURLError  # type: ignore
 
 from sanic.compat import CancelledErrors, Header
 from sanic.constants import DEFAULT_HTTP_CONTENT_TYPE
-from sanic.exceptions import InvalidUsage, ServerError
+from sanic.exceptions import BadURL, InvalidUsage, ServerError
 from sanic.headers import (
     AcceptContainer,
     Options,
@@ -129,8 +130,10 @@ class Request:
     ):
 
         self.raw_url = url_bytes
-        # TODO: Content-Encoding detection
-        self._parsed_url = parse_url(url_bytes)
+        try:
+            self._parsed_url = parse_url(url_bytes)
+        except HttpParserInvalidURLError:
+            raise BadURL(f"Bad URL: {url_bytes.decode()}")
         self._id: Optional[Union[uuid.UUID, str, int]] = None
         self._name: Optional[str] = None
         self.app = app