server {
    listen 80;
    server_name channels.amargi.us;

    location /socket.io/ {
        proxy_pass http://x.x.x.x:3500;  # channels container

        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "upgrade";

        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto $scheme;

        proxy_read_timeout 3600;
        proxy_send_timeout 3600;
        proxy_buffering off;
    }

    # Nothing else should live on this host
    location / {
        return 404;
    }
}