Handle cell stations switches.

[russrizo]

Issue description

There is a problem with playing stream radio(Icecast backend). It appears while phone switches cell stations. Audio stops playing. On the other hand If I switch off and then switch on WiFi audio playback stops but then starts again. It happens only on mobile data. Also interesting thing that playback stops immediately on WiFi toggle, I was sure that it should continue playing from buffer till it ends.
Icecast station url: http://hitfm.kz/mp3/URBAN
Here is my code

MediaSource mediaSource;
  ExtractorsFactory extractorsFactory = new DefaultExtractorsFactory();
  Handler mHandler;
  SimpleExoPlayer mPlayer;
  public UnderExoMediaPlayer(Context context) {
        mHandler = new Handler();
        TrackSelection.Factory videoTrackSelectionFactory = new FixedTrackSelection.Factory();
        TrackSelector trackSelector = new DefaultTrackSelector(videoTrackSelectionFactory);
        DefaultAllocator allocator = new DefaultAllocator(true, 256);
        LoadControl loadControl = new DefaultLoadControl(allocator, 25000, 30000, 1000, 5000); // 
  min buffer, max buffer, start buffer, resume buffer
        mPlayer = ExoPlayerFactory.newSimpleInstance(context, trackSelector, loadControl);
        dataSourceFactory = new DefaultHttpDataSourceFactory(
                Util.getUserAgent(context, "myRadio"), new TransferListener<DataSource>() {
            @Override
            public void onBytesTransferred(DataSource source, int bytesTransferred) {
                if(!ready && ExoPlayer.STATE_READY == mPlayer.getPlaybackState()){
                    if(mOnPreparedListener != null) {
                        new Handler(Looper.getMainLooper()).post(new Runnable() {
                            @Override
                            public void run() {
                                mOnPreparedListener.onPrepared();
                            }
                        });
                    }
                    ready = true;
                }
            }
        });
    }
  public void setDataSource(final Context context, Uri uri) {

        mPlayer.setPlayWhenReady(false);
        mediaSource = new ExtractorMediaSource(uri, dataSourceFactory, extractorsFactory, 
  mHandler, new ExtractorMediaSource.EventListener() {
            @Override
            public void onLoadError(IOException error) {
               mPlayer.prepare(mediaSource);
            }
        });
    }

How can I fix this behavior?

Reproduction steps

Sit in the car, listen to the radio and drive around blocks

Version of ExoPlayer being used

Exoplayer:r2.2.0

Device(s) and version(s) of Android being used

Problem appears on all devices. In my case it is Google Pixel

[ojw28]

Playing out the remaining buffer rather than stopping immediately for this use case is tracked by #1606. For the "stopping" case, you haven't provided sufficient information for us to tell what happened. Please supply a full bugreport as requested in the issue template, captured shortly after encountering the failure.