A simple way to keep tabs on child processes in an express app.

track-child-processes.js

/**
 * Adds given child_process to the app-level array of running attacks so it can be terminated later
 * 
 * @param  {Object} child_process - A node child process representing a currently running attack
 * 
 * @return void
 */
beginTrackingAttack = function(child_process) {
	var currentAttacks = app.get('activeAttacks');
	currentAttacks.push(child_process);  
	app.set('activeAttacks', currentAttacks); 
}