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TLS: improve check for unconsumed data on encryption level changes #4155

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Sep 24, 2020
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TLS: improve check for unconsumed data on encryption level changes #4155

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7 changes: 3 additions & 4 deletions draft-ietf-quic-tls.md
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Expand Up @@ -441,10 +441,9 @@ network, it proceeds as follows:

- If the packet is from a new encryption level, it is saved for later processing
by TLS. Once TLS moves to receiving from this encryption level, saved data
can be provided to TLS. When providing data from any new encryption level to
TLS, if there is data from a previous encryption level that TLS has not
consumed, this MUST be treated as a connection error of type
PROTOCOL_VIOLATION.
can be provided to TLS. When TLS provides keys for a higher encryption level,
if there is data from a previous encryption level that TLS has not consumed,
this MUST be treated as a connection error of type PROTOCOL_VIOLATION.

Each time that TLS is provided with new data, new handshake bytes are requested
from TLS. TLS might not provide any bytes if the handshake messages it has
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