objective c - how to get wifi or 3G internet speed programatically in ios -

i need custom video player play based on internet speed , have 4 video urls hd,high,medium , low quality here iam doing iam playing high resolution video when internet speed limit , fast , want play based on wifi or 3g speed , here problem iam not able internet speed.i searched lot of sites this. , 1 more point while playing have check internet spped every 10 secs. please one

assuming using avfoundation video playback, easier solution problem rather creating 4 video files, convert video use http live streaming, allows player select appropriate bitrate media stream.

https://developer.apple.com/streaming/