Comment 0 for bug 1496932

If cookie with invalid name (with '?' for example) is passed in the query, websocketproxy will fail to handle this query. Easiest way to reproduce:

    $ curl 'https://$NOVNCPROXY_HOST:$NOVNCPROXY_PORT/websockify' -H 'Sec-WebSocket-Version: 13' -H 'Sec-WebSocket-Key: dGVzdAo=' -H 'Upgrade: websocket' -H 'Cookie: ?=!' -H 'Connection: Upgrade' -H 'Sec-WebSocket-Protocol: binary, base64' --compressed
    curl: (52) Empty reply from server

This request leads to following message in nova-novncproxy.log:

    2015-09-17 18:45:45.443 14494 INFO nova.console.websocketproxy [-] handler exception: Illegal key value: ?

In real world this may happen when horizon is running on subdomain (e.g. sub.example.com), while some other "broken" application on parent domain (e.g. example.com) sets cookie with invalid name.