Version history for http-ping shows you how often it was updated over the past months (starting Oct 14, 2008) as well as 'what is new' information for each update (if available, since this information provided by the author).
v 8.0 updated on Mar 10, 2015
Fixed a problem with SSL negotiation for some sites.
v 7.0 updated on Dec 05, 2014
Added support for forcing IPv6 or IPv4 on dual stacked sites; Pass a given header on each ping.
v 4.5 updated on Mar 15, 2011
Added support for sending HTTP POSTs.
v 4.0 updated on Jan 14, 2011
Introduced an option to use the proxy defined in the Internet settings.
v 3.6 updated on Jun 10, 2010
Introduced an option to show the date and time on each ping attempt.
v 3.2 updated on May 19, 2009
Added the option to timeout.
v 3.0 updated on Oct 14, 2008
Added support for HTTPS; added the option to follow HTTP redirects
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