Re: [quicwg/base-drafts] Optimistic ACK in early handshake (#2192)

[MikkelFJ <[e-mail]>]

Your point is that if the attacker optimistically ACKs a packet that it has all reasons to believe it will receive, but then packet gets dropped by some router, then the attacker cannot get its data later. Like crying wolf once too many. But if it doesn't care about the occasional loss, it can get better bandwidth, for example to starve out other users.

But if the loss is unlikely, and when it happens, is likely to just be a lost video frame, then you might watch better netflix on the dorm than all of your friends. If the connection has a vital loss, you just reconnect.

The real question here is the bandwidth can be manipulated enough to matter, while doing handshake. For example, one might want to drop RTT history once new data is available post handshake.

-- 
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/issues/2192#issuecomment-448630342