style: add msg in task.cancel (#2416)

* style: add msg in ``task.cancel``

* style: apply isort

* fix: use else statement

* fix: use tuple

* fix: rollback for test

* fix: rollback like previous change

* fix: add ``=``

Co-authored-by: Adam Hopkins <adam@amhopkins.com>

sanic/server/protocols/http_protocol.py

@@ -8,6 +8,8 @@
 if TYPE_CHECKING:  # no cov
     from sanic.app import Sanic
 
+import sys
+
 from asyncio import CancelledError
 from time import monotonic as current_time
 
@@ -169,7 +171,10 @@ def check_timeouts(self):
                 )
                 self.loop.call_later(max(0.1, interval), self.check_timeouts)
                 return
-            self._task.cancel()
+            cancel_msg_args = ()
+            if sys.version_info >= (3, 9):
+                cancel_msg_args = ("Cancel connection task with a timeout",)
+            self._task.cancel(*cancel_msg_args)
         except Exception:
             error_logger.exception("protocol.check_timeouts")