[e2e] Is a non-TCP solution dead?

[James Kempf]

> On the other hand, if we can identify useful commonality between
> link-layers, and if we can pass up hints to the transport to make
> things work better without sacrificing generality or security, then
> this seems a reasonable thing to me.  This has however proved rather
> difficult every time it's been raised before.
>

What exactly have the difficulties been? Seems like defining the task should be
one of defining the right set of abstractions necessary to provide transport
layer(s) with what they need to optimize.

            jak