> The issue is most likely that no one "in the wild" has done any testing of significance. I thought the Akamai numbers were significant. I can certainly see tls1.2 exchange but there is nothing for tls1.3 and so I am working on getting a site up pronto ( in the wild ) to test. I am sorry if it wasn't clear, but I was referring to *Akamai* not *OpenSSL.* Let me repost the whole message edited a bit. AKAMAI has partially deployed TLS 1.3 on one of its networks using its own server. Customer can opt-in to beta-test. AKAMAI has already seen hundreds of millions of connections, with [xxx, elided] megabytes of data exchanged. AKAMAI has found no issues. AKAMAI does not do 0RTT. This is production traffic, not staging or test. AKAMAI has received no customer complaints. I was surprised by how many connections and how much data AKAMAI is already seeing. I think that makes a very strong argument that TLS 1.3 should be enabled by default if it all possible. -- openssl-users mailing list To unsubscribe: https://mta.openssl.org/mailman/listinfo/openssl-users