Mobile Check Bandwidth Function

[Sannyasin Brahmanathaswami]

Can  anyone share their "test bandwidth" library?

I'm looking for both

1) this phone is off line
    --easy enough… ping your server, no response, = off line

2) check for bandwidth speed below some threshold and then inform  user
   -- be patient, your internet speed is slow, this may take time.

anyone already invent this wheel yet?

BR