[noise] expected length of messages during handshake

[David Wong]

> It's not an either/or, since NoiseSocket is built on top of the Noise core.
>
> As for encouraging Noise libraries to also implement NoiseSocket or
> any other Noise-based protocol:  I'd encourage people to experiment
> with NoiseSocket.  But NoiseSocket is young, and probably needs a lot
> more work and implementation/deployment experience before we have any
> confidence that it's the right direction.
>
> But to figure that out, we need to try it!
>

Totally,
The experiment will also be more productive if we also have some
guidance from you as to what we should implement and test :)

Knowing that, I'll probably spend some time going over NoiseSocket and
see if I can implement that in addition of what I currently have.

David

PS: I haven't given up on Disco, I just want a solid Noise
implementation that I can use for Disco :)