POST 2 Push

POST 2 Push is an app that starts a customizable web server and notifies you when there is a POST request, using a push notification. This is app is useful when you need to communicate between your phone and a web browser on the same LAN. Send notifications to your phone without additional software. It uses software is installed on most devices, as opposed to installing app-specific software that syncs your desktop and phone notifications. Any software that can send a POST request will work, such as JavaScript (web browser), Python, Java.

Does not work with battery saver aka doze mode (present in Android 6 and above). Service must be active to work.
Keep screen unlocked as well.

Features:
-configure the port numbers of the server.
-configure the accepted parameter keys.
-configure responses for GET, POST, POST without the correct parameters, and the other HTTP request methods.
-configure the notification sound.
-server will continue running after the app is swiped away from recents.
-Runs an HTTP and/or HTTPS server.

Warning:
-Although this app hosts an HTTPS server as well, it does not use a safe key and all data that goes to the server should be treated as visible to everyone.