Issues with reverse proxying the application using socket.io and Secure Websockets

Hello,

I am trying to setup a reverse proxy for the application written with socket.io which tries to upgrade the connection to Secure Websockets. Looking at the docs WSS should be supported in BIG-IP 11.5.4, however I am getting some connection errors as per below (trace from the Firebug):

The connection to wss://host.example.com/launchpad/socket.io/?EIO=3&transport=websocket&sid=GTQLD62vWeuwQwIzAAIp was interrupted while the page was loading.  socket.io.js (line 3, col 1049)

Are there any limitations known when using LTM and WSS ? In my existing lab configuration I am using both rewrite rules and stream profiles to rewrite URLs.

Thanks a lot for any comments Regards