Fix usage of await (#106)

* Fix usage of await

* Fix types

Author: blink1073

jupyter_server_terminals/handlers.py

@@ -5,6 +5,7 @@
 
 import typing as t
 
+from jupyter_core.utils import ensure_async
 from jupyter_server._tz import utcnow
 from jupyter_server.auth.utils import warn_disabled_authorization
 from jupyter_server.base.handlers import JupyterHandler
@@ -54,11 +55,11 @@ async def get(self, *args: t.Any, **kwargs: t.Any) -> None:
             raise web.HTTPError(404)
         resp = super().get(*args, **kwargs)
         if resp is not None:
-            await resp
+            await ensure_async(resp)  # type:ignore[arg-type]
 
     async def on_message(self, message: t.Any) -> None:  # type:ignore[override]
         """Handle a socket message."""
-        await super().on_message(message)
+        await ensure_async(super().on_message(message))  # type:ignore[arg-type]
         self._update_activity()
 
     def write_message(self, message: t.Any, binary: bool = False) -> None:  # type:ignore[override]