[erebe__]

I use the word tunnel but it would be more correct to use "proxy"

There is no wrappring of udp packet into another layer of TCP. Wstunnel unpack the data at the client forward it using tcp/websocket, and after re-take this data to put it back into its original form (i.e: udp)

so there is no encapsulation of many protocol.

The only place where there is encapsulation, is for tls. if your client use tls to connect to wstunnel server. And that your data is already encrypted with tls (i.e: https) there will be 2 tls encryption