MultiServer, customserver, CI, Test: Fix problems in room hosting and test/simulate it (#3464)

* Test: add hosting simulation test

* WebHost: add weak typing to get_app()

* MultiServer: add typing to auto_saver_thread

* MultiServer: don't cancel task, properly end it

* customserver: stop auto-save thread from saving after shutdown

and make sure it stops, another potential memory leak

* MultiServer, customserver: make datapackage small again

* customserver: collect/finish room tasks

Hopefully fixes the memory leak we are seeing

* CI: test hosting

* Test: hosting: verify autohoster saves on Ctrl+C

* customserver: save when stopping via Ctrl+C

MultiServer.py

@@ -3,6 +3,7 @@ from __future__ import annotations
 import argparse
 import asyncio
 import collections
+import contextlib
 import copy
 import datetime
 import functools
@@ -176,7 +177,7 @@ class Context:
     location_name_groups: typing.Dict[str, typing.Dict[str, typing.Set[str]]]
     all_item_and_group_names: typing.Dict[str, typing.Set[str]]
     all_location_and_group_names: typing.Dict[str, typing.Set[str]]
-    non_hintable_names: typing.Dict[str, typing.Set[str]]
+    non_hintable_names: typing.Dict[str, typing.AbstractSet[str]]
     spheres: typing.List[typing.Dict[int, typing.Set[int]]]
     """ each sphere is { player: { location_id, ... } } """
     logger: logging.Logger
@@ -231,7 +232,7 @@ class Context:
         self.embedded_blacklist = {"host", "port"}
         self.client_ids: typing.Dict[typing.Tuple[int, int], datetime.datetime] = {}
         self.auto_save_interval = 60  # in seconds
-        self.auto_saver_thread = None
+        self.auto_saver_thread: typing.Optional[threading.Thread] = None
         self.save_dirty = False
         self.tags = ['AP']
         self.games: typing.Dict[int, str] = {}
@@ -268,6 +269,11 @@ class Context:
         for world_name, world in worlds.AutoWorldRegister.world_types.items():
             self.non_hintable_names[world_name] = world.hint_blacklist
 
+        for game_package in self.gamespackage.values():
+            # remove groups from data sent to clients
+            del game_package["item_name_groups"]
+            del game_package["location_name_groups"]
+
     def _init_game_data(self):
         for game_name, game_package in self.gamespackage.items():
             if "checksum" in game_package:
@@ -1926,8 +1932,6 @@ class ServerCommandProcessor(CommonCommandProcessor):
     def _cmd_exit(self) -> bool:
         """Shutdown the server"""
         self.ctx.server.ws_server.close()
-        if self.ctx.shutdown_task:
-            self.ctx.shutdown_task.cancel()
         self.ctx.exit_event.set()
         return True
 
@@ -2285,7 +2289,8 @@ def parse_args() -> argparse.Namespace:
 
 
 async def auto_shutdown(ctx, to_cancel=None):
-    await asyncio.sleep(ctx.auto_shutdown)
+    with contextlib.suppress(asyncio.TimeoutError):
+        await asyncio.wait_for(ctx.exit_event.wait(), ctx.auto_shutdown)
 
     def inactivity_shutdown():
         ctx.server.ws_server.close()
@@ -2305,7 +2310,8 @@ async def auto_shutdown(ctx, to_cancel=None):
             if seconds < 0:
                 inactivity_shutdown()
             else:
-                await asyncio.sleep(seconds)
+                with contextlib.suppress(asyncio.TimeoutError):
+                    await asyncio.wait_for(ctx.exit_event.wait(), seconds)
 
 
 def load_server_cert(path: str, cert_key: typing.Optional[str]) -> "ssl.SSLContext":