novnc console to instances fail with "Failed to connect to server (code: 1006)"

Issue

• We are using ssl for horizon. After updating nova package to version 2014-2.3-36, we are unable to access console of any instance. It fails with below error:

Failed to connect to server (code: 1006)

• From logs:

2015-11-26 17:21:08.757 30491 INFO nova.console.websocketproxy [req-75729d6d-5638-47a5-a2f0-dcbbecc611f0 None] handler exception: Origin header protocol does not match this host.
2015-11-26 17:21:08.761 30491 INFO nova.console.websocketproxy [req-75729d6d-5638-47a5-a2f0-dcbbecc611f0 None] Traceback (most recent call last):
  File "/usr/lib/python2.7/site-packages/websockify/websocket.py", line 711, in top_new_client
    self.new_client()
  File "/usr/lib/python2.7/site-packages/nova/console/websocketproxy.py", line 180, in new_client
    self.new_websocket_client()
  File "/usr/lib/python2.7/site-packages/nova/console/websocketproxy.py", line 111, in new_websocket_client
    raise exception.ValidationError(detail=detail)
ValidationError: Origin header protocol does not match this host.