Don't recommend sending one IMMEDIATE_ACK per RTT

[martinthomson]

Alternatively, a sender can accomplish this by sending an IMMEDIATE_ACK frame once each round trip time, although if the packet containing an IMMEDIATE_ACK is lost, detection of that loss will be delayed by the reordering threshold or requested max ack delay.

Please don't suggest this. Acknowledging once per RTT is something that a receiver should be expected to manage on their own.

[mirjak]

This is not a recommendation but explaining the possibilities in case the receiver does not manage accordingly. This was discussed quite a lot and we ended up removing normative language (see #211) in order to not have it recommended. I don't think we should open this issue again.

[mirjak]

@martinthomson is there anything we need to do here or can we close this issue?

[martinthomson]

It reads as a suggestion to me. Consider rewording.

[mirjak]

@martinthomson I created PR #278. Is that any better?