Support web server config changes

http2irc.py

@@ -376,22 +376,26 @@ class WebServer:
 		self._app.add_routes([aiohttp.web.post('/{path:.+}', self.post)])
 
 		self.update_config(config)
+		self._configChanged = asyncio.Event()
 
 	def update_config(self, config):
 		self._paths = {map_['webpath']: (map_['ircchannel'], f'Basic {base64.b64encode(map_["auth"].encode("utf-8")).decode("utf-8")}' if map_['auth'] else False) for map_ in config['maps'].values()}
 		needRebind = self.config['web'] != config['web']
 		self.config = config
 		if needRebind:
-			#TODO
-			logging.error('Webserver host or port changes while running are currently not supported')
+			self._configChanged.set()
 
 	async def run(self, stopEvent):
-		runner = aiohttp.web.AppRunner(self._app)
-		await runner.setup()
-		site = aiohttp.web.TCPSite(runner, self.config['web']['host'], self.config['web']['port'])
-		await site.start()
-		await stopEvent.wait()
-		await runner.cleanup()
+		while True:
+			runner = aiohttp.web.AppRunner(self._app)
+			await runner.setup()
+			site = aiohttp.web.TCPSite(runner, self.config['web']['host'], self.config['web']['port'])
+			await site.start()
+			await asyncio.wait((stopEvent.wait(), self._configChanged.wait()), return_when = concurrent.futures.FIRST_COMPLETED)
+			await runner.cleanup()
+			if stopEvent.is_set():
+				break
+			self._configChanged.clear()
 
 	async def post(self, request):
 		logging.info(f'Received request for {request.path!r}')