Transport parameter that limits 0-RTT data #405
Labels
-tls
-transport
design
An issue that affects the design of the protocol; resolution requires consensus.
has-consensus
An issue that the Chairs have determined has consensus, by canvassing the mailing list.
TLS has an extension on the NewSessionTicket that limits the amount of early data. This limits the number of plaintext octets (not including padding) that can be send in early data. This allows a server to constrain how much clients send in 0-RTT.
We could reuse and repurpose that extension for QUIC, but we would have to do so explicitly. Currently, we do not. Or, we could define a new transport parameter that explicitly limits the size of incoming 0-RTT data.
We could define this count in a number of ways:
I have a slight preference for option 4 for reasons what will become obvious in a parallel discussion (see #390).
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