> The handshake state machine has been significantly restructured to be more consistent and to remove superfluous messages such as ChangeCipherSpec.
No longer true, at least for CCS. > connection. Unfortunately, some middleboxes fail when presented with new values. In TLS 1.3, the TLS server indicates its version I suggest replacing “middleboxes fail” with “intermediaries block the connection” > For backward compatibility reasons with middleboxes (see Replace “middlebox” with “intermediary”. This appears a couple of other times, and I suggest doing that replacement everywhere except in Appendix D where we say something like “Network intermediaries, along the path between the two communicating endpoints, typically called intermediaries, have been shown to interfere …” I also think that all of the changes described earlier (such as the ones quoted above, but there are others) should be summarized in Appendix D. I am willing to do a PR for this, but not sure what to do about the first point I raised above.
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