I'm looking to create a product that does some network and connectivity diagnosis from inside the browser. First of all, does anyone know of something like this (doesn't necessarily have to be a java applet, but does have to sit in the browser)? Second, how much access does a java applet (or the other technologies) give you to the network layer in order to get information on network and connectivity issues to particular locations?
Some of the things I would like to get from this diagnosis:
- response time to a given host
- dns lookup time
Thank you in advance!