title: Meteor WebSocket handshake error 400 with nginx
body: <p>I managed to deploy meteor on my infrastructure (Webfactions).
  The application seems to work fine but I get the following error in the browser console when my application starts:</p>
  
  <p><code>WebSocket connection to 'ws://.../websocket' failed: Error during WebSocket handshake: Unexpected response code: 400</code></p>