If you are on rails 5 and you are using the default config/environments/development.rb file it will have this line of code in there. config.file_watcher = ActiveSupport::EventedFileUpdateChecker This requires the gem listen. This threw me for a bit as I was doing a rails 4 upgrades to a rails 5 edit: Forgot to mention that if … Read more
The backlog argument to listen() is only advisory. POSIX says: The backlog argument provides a hint to the implementation which the implementation shall use to limit the number of outstanding connections in the socket’s listen queue. Current versions of the Linux kernel round it up to the next highest power of two, with a minimum … Read more
It is possible. Use code below (for newer Android versions, especially Marshmallow, see bottom of the answer): public class SettingsContentObserver extends ContentObserver { int previousVolume; Context context; public SettingsContentObserver(Context c, Handler handler) { super(handler); context=c; AudioManager audio = (AudioManager) context.getSystemService(Context.AUDIO_SERVICE); previousVolume = audio.getStreamVolume(AudioManager.STREAM_MUSIC); } @Override public boolean deliverSelfNotifications() { return super.deliverSelfNotifications(); } @Override public void … Read more
On macOS Big Sur and later, use this command: sudo lsof -i -P | grep LISTEN | grep :$PORT or to just see just IPv4: sudo lsof -nP -i4TCP:$PORT | grep LISTEN On older versions, use one of the following forms: sudo lsof -nP -iTCP:$PORT | grep LISTEN sudo lsof -nP -i:$PORT | grep LISTEN … Read more