title: Proxy blocking websockets? How to get round
body: <p>I have a websocket server running written in Python, (from <a href="https://github.com/opiate/SimpleWebSocketServer" rel="nofollow">https://github.com/opiate/SimpleWebSocketServer</a>), and when I try to connect to it from my house, it works fine. However, when I try to connect to it from school, where there is a web proxy in place, it fails to connect with the error "undefined".</p>
  
  <p>I believe that it is the proxy that is stopping the connection, but am not sure how to test to see if it definitely is. How can I test this, and if it is the proxy, how can I get round this?</p>
  
  <p>Thanks</p>