In this post to his site Gonzalo Ayuso shows you how to create a logger for your POST requests and their information with a bit of helpful code and Websockets.

Last days I’ve been working with background geolocation with an ionic application. There’s a cool plugin to do that. [...] Basically this plugin performs a POST request to the server with the GPS data. [...] I can develop a simple Silex application with a POST route and log the request in a file or flush those request to the console. This’d have been easy but as far as I’m a big fan of WebSockets (yes I must admit that I want to use WebSockets everywhere :) I had one idea in my mind.

He shows the creation of a simple Silex-based application with just two endpoints (channel that handles both GET and POST) that uses the Guzzle HTTP library to listen on the Websockets port for incoming connections. He then shows how to add the code necessary on the frontend (using express) to send the POST data automatically to the waiting Silex application. He's provided the full working code for the example on his GitHub account as well so you can see it fully fleshed out.