Bottlepy WebSocket server

app.py

from gevent import monkey; monkey.patch_all()         
from bottle import Bottle, request, abort             
                                                      
app = Bottle()                                        
                                                      
@app.route('/ws')                                     
def handle_ws():                                      
  ws = request.environ.get('wsgi.websocket')          
  if not ws:                                          
    abort(400, 'Expected a WebSocket request')        
                                                      
  while True:                                         
    try:                                              
      msg = ws.receive()                              
      ws.send(f'Your msg {msg}')                      
    except WebSocketError:                            
      break                                           
                                                      
from gevent.pywsgi import WSGIServer                  
from geventwebsocket import WebSocketError            
from geventwebsocket.handler import WebSocketHandler  
                                                      
server = WSGIServer(('0.0.0.0', 3000), app,           
    handler_class=WebSocketHandler)                   
                                                      
server.serve_forever()