[Tornado] Using Webscoket is always 403 error

The tornado version used is 4.0 +
Backstage: PS d:\codehouse\tornado\websocket> python. \ws_app.pywarning:tornado.access:403 get/ws (:: 1) 1.00msWARNING: tornado.access:403 Get/ws (:: 1) 1.00ms
Front Desk: WebSocket connection to ' Ws://localhost:8080/ws ' failed:error during WebSocket handshake:unexpected response code:40 3


Modification method: The method of overriding homology checking for websocket processing classes:

Class Websockethandler (Tornado.websocket.WebSocketHandler):    def check_origin (Self, origin):        return True    ....

This is said to be a new feature added after the Tornado 4.0 release.

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[Tornado] Using Webscoket is always 403 error