I am testing yours WebSocket API from the provided example market_price.py downloaded from this site.
I get following response "Connection already closed" and would appreciate help on how to solve it.
Python version 3.6.2 (v3.6.2:5fd33b5, Jul 8 2017, 04:57:36) [MSC v.1900 64 bit (AMD64)]
Websocket_client version 0.53.0
Connecting to WebSocket ws://ap-server1t:14002/WebSocket ...
Connection is already closed.