Yes, it's very cool. Justin at DSLReports is doing something similar with websocket pings (I think - he'll respond if I'm wrong) which are pretty lightweight and therefore pretty good tests of latency. (Not quite as close to the metal as an ICMP Echo, though.)

On May 5, 2015, at 2:04 PM, David Collier-Brown <davec-b@rogers.com> wrote:

On 05/05/2015 08:49 AM, Rich Brown wrote:

But a plug for DSReports Speed Test never hurts :-)

Darn right:
Have you folks also seen "blip"? It's at http://apenwarr.ca/log/?m=201304#26

--dave
-- 
David Collier-Brown,         | Always do right. This will gratify
System Programmer and Author | some people and astonish the rest
davecb@spamcop.net           |                      -- Mark Twain
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