Re: [quicwg/base-drafts] Make EOED transmission optional in QUIC, please (#1518)

[Christian Huitema <[e-mail]>]

@ekr You write that "_After EOED is sent, the TLS stack tells the transport stack that further non-TLS data should be sent with the 1-RTT keys at this point_." I don't know for other stacks, but there is no such signal with Picotls. That API provides signals such as "expecting data from epoch X", "Here is data to send on epoch Y", "here is the write (or read) key for epoch X" and "all done". The signal "here is the write key for epoch 3" does not double as "and please stop sending on epoch 1". It cannot, because the epoch 1 crypto stream still has to be transmitted and acknowledged.

We could also have an interesting discussion about stream frames carried in the same 0-RTT packet as crypto frames. Should we have a different treatment depending on whether the stream frame is carried before or after the crypt frame in the packet?

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