How to stop Upload speed test?

[basil369]

The stopTest() in NDTTest.kt works only for download speed test. I tried to implement a similar method for stopping the upload test however it is not working.
fun stopTest() { uploader?.cancel() downloader?.cancel() executorService?.shutdown() runLock.release() }

fun cancel() { Log.d("Uploader", "cancel: called") ws?.cancel() releaseResources() }

This is what I tried. Can someone let me know a way to stop the upload test in between?