On Jan 27, 2011, at 8:12 , IETF Chair wrote:
Originally, two ports were assigned for plain and over-TLS, which for HTTP
mapped to two different URL schemes: http and https.
Many people thought that this was a waste of a port, and the STARTTLS
approach was developed. You say that it does not work in some cases, and you
seem to be suggesting that we go back to the original way.
Maybe it works in some cases and not others. Can we say which is which?
I did misread the draft as saying that 2 ports were not allowed when clearly
that was not what people meant but ...
I'm mostly concerned about cases where latency or bandwidth are an issue -
basically protocols for real time protocols for internet of things. For things
like email I'm less concerned. However, I think we can make some observation
about which works best. Consider some of the most successful protocols on the
internet
http, 2 ports
email, pop, imap, and smtp, - more use on multi ports than STARTLS though many
deployment support both
sip, 2 ports
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