title: Error during WebSocket handshake: Unexpected response code: 400 when deployed on google cloud
body: <p>I have made an app of Django Channels and its working perfect locally,but when I deployed it to production (Google Cloud Platform) it's giving me:</p>
  
  <p><strong>(index):42 WebSocket connection to 'wss://appname-263701.appspot.com/ws/chat/user2/' failed: Error during WebSocket handshake: Unexpected response code: 400</strong></p>
  
  <p>I can't figure whats the problem is, is it a problem of WSS? The app is working fine locally.</p>
  
  <p>If need some code to review I can also upload that! Just need a guide how I can fix this</p>