Re: [TLS] Question about unrecognized extension types in the TLS 1.3 client hello message

On Mon, Jan 30, 2017 at 4:45 PM Adam Langley wrote: On Mon, Jan 30, 2017 at 1:41 PM, Scott Fluhrer (sfluhrer) wrote: > My question: in TLS 1.3, if the client inserts an extension of a type that > the server does not recognize, how must the server

[TLS] Question about unrecognized extension types in the TLS 1.3 client hello message

My question: in TLS 1.3, if the client inserts an extension of a type that the server does not recognize, how must the server behave? Is it required that the server just ignore the extension, or can it take some other action (e.g. ignore the client hello)? Background (why I'm asking): one of