reverse proxy (nginx)

If you are running nginx as a reverse proxy, you need to forward both websocket connections and http. On top of that, scribblers needs the forward headers to correctly function. This is partly related to the requests scribbler does from within the JS and the client IP limit.

Here's an example configuration that has been known to work:

location / {
        # WebSocket support (nginx 1.4)
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "Upgrade";
        proxy_read_timeout 86400;

        proxy_pass http://0.0.0.0:8080;
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forward-Proto $scheme;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;

}