var http = require('http');
var extend = null;
http.createServer(function (req, res) {
		// sum length of chunks
		var len = 0;
		req.on('data', function(data) { len += data.length; });

		req.on('end', function() {
			var echo = {
				bodyLength: len,
				appname: process.env.FARMJS_APP_FULLNAME || req.headers['x-farmjs-app'],
				appbasename: process.env.FARMJS_APP || req.headers['x-farmjs-app-fullname'],
				inst: process.env.FARMJS_INSTANCE,
				port: process.env.PORT,
				argv: process.argv,
				url: req.url,
				headers: req.headers,
			};

			if (extend) for (var k in extend) echo[k] = extend[k];

			res.writeHead(200, { "content-type": "application/json", "x-echo": JSON.stringify(echo) });
			res.end(JSON.stringify(echo, true, 2));
		});
	}).listen(process.env.PORT);
console.log('app started on port', process.env.PORT);