minor improvements, fixes, old config+constant removal

freqtrade/rpc/api_server/api_auth.py

@@ -50,6 +50,7 @@ def get_user_from_token(token, secret_key: str, token_type: str = "access"):
 
 # This should be reimplemented to better realign with the existing tools provided
 # by FastAPI regarding API Tokens
+# https://github.com/tiangolo/fastapi/blob/master/fastapi/security/api_key.py
 async def get_ws_token(
     ws: WebSocket,
     token: Union[str, None] = None,

freqtrade/rpc/api_server/api_ws.py

@@ -2,23 +2,30 @@ import logging
 from typing import Any, Dict
 
 from fastapi import APIRouter, Depends, WebSocket, WebSocketDisconnect
+# fastapi does not make this available through it, so import directly from starlette
+from starlette.websockets import WebSocketState
 
 from freqtrade.enums import RPCMessageType, RPCRequestType
 from freqtrade.rpc.api_server.deps import get_channel_manager, get_rpc
 from freqtrade.rpc.api_server.ws.channel import WebSocketChannel
-from freqtrade.rpc.api_server.ws.utils import is_websocket_alive
 from freqtrade.rpc.rpc import RPC
 
 
-# from typing import Any, Dict
-
-
 logger = logging.getLogger(__name__)
 
 # Private router, protected by API Key authentication
 router = APIRouter()
 
 
+async def is_websocket_alive(ws: WebSocket) -> bool:
+    if (
+        ws.application_state == WebSocketState.CONNECTED and
+        ws.client_state == WebSocketState.CONNECTED
+    ):
+        return True
+    return False
+
+
 async def _process_consumer_request(
     request: Dict[str, Any],
     channel: WebSocketChannel,

freqtrade/rpc/api_server/webserver.py

@@ -205,7 +205,7 @@ class ApiServer(RPCHandler):
 
         # For testing, shouldn't happen when stable
         except Exception as e:
-            logger.info(f"Exception happened in background task: {e}")
+            logger.exception(f"Exception happened in background task: {e}")
 
     def start_api(self):
         """
@@ -244,8 +244,7 @@ class ApiServer(RPCHandler):
             if self._standalone:
                 self._server.run()
             else:
-                if self._config.get('api_server', {}).get('enable_message_ws', False):
-                    self.start_message_queue()
+                self.start_message_queue()
                 self._server.run_in_thread()
         except Exception:
             logger.exception("Api server failed to start.")