The Netflux endpoint doesn't support partial WebSocket messages

This causes problems on Tomcat when editing a wiki page in realtime if the page content is large:

Connection Closed: 1009 The decoded text message was too big for the output buffer and the endpoint does not support partial messages

as described here https://users.tomcat.apache.narkive.com/29cXbLfg/websocket-message-size-limits .