On Feb 21, 2018, at 1:39 PM, Stuart Cheshire <chesh...@apple.com> wrote: > I think Jan makes a good point. > > Suppose there’s a server that supports DNS over TCP, and DSO signaling, and > Push Notifications, and DNS Update, and maybe other things. > > Now suppose a client connects to that server. The server doesn’t know what > that client is going to do. The client may do queries over TCP, or DNS > updates. It may do queries over TCP and use the DSO signaling to request a > longer inactivity timeout. It may request Push Notifications (which are > currently specified to require TLS). It may do all of those. > > When the server receives an incoming TCP connection request from a client, > what are the first bytes received over that TCP connection? Are they a DNS > header and message body? Are they a TLS handshake message? Can it be either? > How does the server know?
Doesn’t dns over tls use a different port? _______________________________________________ DNSOP mailing list DNSOP@ietf.org https://www.ietf.org/mailman/listinfo/dnsop
