Frist draft on a simple javascript deamon

deamontest.js

var child_process = require('child_process');


function startDeamon(child, args) {

  var newEnv = JSON.parse(JSON.stringify(process.env));
  newEnv.deamonOptions = JSON.stringify({exec: child, args: args});

  var deamonWatcher = child_process.fork(process.argv[1], ['deamon'], {
    env: newEnv
  });

  //deamonWatcher.independent();
  return deamonWatcher;
}

function setupProcess() {

	process.on('disconnect', function () {
    // since IPC is down, we may assume the deamon is dead
		var options = JSON.parse(process.env.deamonOptions);

    startDeamon(options.exec, options.args);
    process.exit(0);
	});
}

// userland file
if (process.argv[2] === 'child') {
	console.log('process: ' + process.pid);
  setupProcess();

  // do something
  var http = require('http');
  http.createServer(function (req, res) {
    res.writeHead(200, {'Content-Type': 'text/plain'});
    res.end('Hello World\n');

    process.send('error');
  }).listen(1337, "127.0.0.1");
}

// deamon file
else if (process.argv[2] === 'deamon') {
	console.log('deamon: ' + process.pid);
  var options = JSON.parse(process.env.deamonOptions);

  var startProcess = function () {
    var proc = child_process.fork(options.exec, options.args, {
      env: process.env
    });

    proc.on('exit', function (code) {
      if (code !== null && code !== 0) {
        startProcess();
      }
    });

    proc.on('message', function () {
      throw 'oh shit x2';
    });
  };

  startProcess();
}

// module
else {
  console.log('head: ' + process.pid);
	// userland call
	startDeamon(process.argv[1], ['child']);

}