Commit
332b8a37c7e509801ce180b56465b26123593f5b
by Achim KrausReduce cookie data for better DTLS 1.3 compatibility.
According RFC6347, 4.2.1. the parameter values (version, random,
session_id, cipher_suites, compression_method) are the relevant ones,
though the client MUST same values for them. The HelloExtensions are not
mentioned. They may vary using DTLS 1.3, which then causes frequently
new HelloVerifyRequest being send. Reducing the data included in the
cookie prevents this and fails/aborts such an handshake without such
coolkie retries
Signed-off-by: Achim Kraus <achim.kraus@cloudcoap.net>