Update the SSL module to support TLS 1.3.
Imported from https://youtrack.roxen.com/issue/PIKE-50
Reported by @grubba
TLS 1.3 is starting to stabilize, and various drafts of it are already supported by browsers.
Imported from https://youtrack.roxen.com/issue/PIKE-50
Reported by @grubba
TLS 1.3 is starting to stabilize, and various drafts of it are already supported by browsers.