On 8/15/12 7:19 PM, William Chan (陈智昌) wrote: > Can you elaborate how SRV would work here from a client perspective? > Do you propose making the client block on the SRV lookup? Or are you > proposing doing this out of band and switching to HTTP/2.0 if we > discover support? Block is the wrong word. You're already doing A-Record queries. Adding another record in the question only adds latency if you must serially query. Also, I myself am not convinced that SRV records are sufficient to the task. For instance, what happens if there is a port # in the URL? How do you identify the version #? Paul Hoffman did some work on a draft that sort-of looked at this problem. I'm going to guess that he stopped short because of potential downgrade attacks. Eliot
Received on Wednesday, 15 August 2012 17:41:17 UTC