How to record a stream audio from radio online using iOS SWIFT ?

See more:

audio

iOS

Swift

i've been looking for months now to find out how to record a live audio stream using swift ?
please give me a hint a small code to start .
regards

What I have tried:

This code is in java i want the same in Swift please

while ((bufferLength = inputStream.read(buffer)) > 0
                                       && Recording) {

                                   fileOutputStream.write(buffer, 0,
                                           bufferLength);
                                   TotalDownloaded += bufferLength;

                               }
                               inputStream.close();
                               fileOutputStream.close();