Re: [quicwg/base-drafts] Proposed change to #1965 (#2212)

[janaiyengar <[e-mail]>]

@martinduke : This PR has the outcome you are looking for. Basically, on a PTO, if you have something to retransmit, you will. If you have nothing to retransmit, Ian's PR suggests that you basically send a PING to elicit an ACK.  This PR calls them lost instead, so inflight is down to 0 immediately (if inflight is down to 0, you are not blocked anymore when you need to send new app data).

Basically, this PR says:
```
    if (new or unacked data available)
        send it in a new packet
    else
        mark unacked data as lost (give up on this data)
```
At the end, you either have a packet in flight (and a PTO armed), or you have nothing in flight (and no PTO armed).  The point is that you don't need to send anything if you don't have anything to send. You mark what was inflight as lost because it's actually reasonable to do so (it's been long enough).

In terms of #2103 , let's have that discussion there. I don't think there's conceptual muddling here. It's possible that I'm missing it entirely, but I don't see the muddle (yet :-)).

-- 
You are receiving this because you are subscribed to this thread.
Reply to this email directly or view it on GitHub:
https://github.com/quicwg/base-drafts/pull/2212#issuecomment-448880337