How to measure ios nsurlsession dowload task Speed?

Question

How to measure a downloadTask Speed:

The Method which I thought is:

calc the last 3s avg speed, and reset received Bytes after 3s, and start a NSTimer which every 0.8s call once.

But this will cause a problem: After 3s the NSTimer call at once, the received Bytes has been reset to 0, but I want a Smooth speed.

http://stackoverflow.com/questions/12271502/best-way-to-measure-download-speed-on-iphone-using-cocoa-touch — Nitin Gohel, Jun 17 '16 at 08:07
do you want something like a bar to show how much download is done? — Mohamad Bachir Sidani, Jun 17 '16 at 08:20

score 0 · Answer 1 · answered Jun 06 '17 at 15:43

First, use NSURLSessionDelegate. If you are using completionHandler: delegate methods won't be called. Then in:

-(void)URLSession:(NSURLSession *)session dataTask:(NSURLSessionDataTask *)dataTask didReceiveData:(NSData *)data

you can add your own counter of [data length]. Collect and reset it in a synchronized way using NSTimer and you have it. Remember that NSTimer is not firing exactly as specified so if you need better precision store exact times of measurements

How to measure ios nsurlsession dowload task Speed?

1 Answers1