diff --git a/.gitignore b/.gitignore
index 123ae94..bf23d29 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,7 @@
+letsencrypt.work
+letsencrypt.logs
+letsencrypt.config
+
 # Logs
 logs
 *.log
diff --git a/bin/standalone.js b/bin/standalone.js
index af6c094..434cb61 100644
--- a/bin/standalone.js
+++ b/bin/standalone.js
@@ -1,36 +1,52 @@
 'use strict';
 
+var path = require('path');
 var leBinPath = require('homedir')() + '/.local/share/letsencrypt/bin/letsencrypt';
-var lep = require('letsencrypt-python').create(leBinPath);
+var LEP = require('letsencrypt-python');
+var lep = LEP.create(leBinPath, { debug: true });
 var conf = {
   domains: process.argv[2]
 , email: process.argv[3]
 , agree: process.argv[4]
 };
+var port = 80;
+var tlsPort = 5001;
+
+if (!conf.domains || !conf.email || !conf.agree) {
+  console.error("Usage: letsencrypt <domain1,domain2> <email> agree");
+  console.error("Example: letsencrypt example.com,www.example.com user@example.com agree");
+  return;
+}
 
 // backend-specific defaults
 // Note: For legal reasons you should NOT set email or agreeTos as a default
 var bkDefaults = {
   webroot: true
-, webrootPath: __dirname + '/acme-challenge'
+, webrootPath: path.join(__dirname, '..', 'tests', 'acme-challenge')
 , fullchainTpl: '/live/:hostname/fullchain.pem'
 , privkeyTpl: '/live/:hostname/fullchain.pem'
-, configDir: '/etc/letsencrypt'
-, logsDir: '/var/log/letsencrypt'
-, workDir: '/var/lib/letsencrypt'
+, configDir: path.join(__dirname, '..', 'tests', 'letsencrypt.config')
+, logsDir: path.join(__dirname, '..', 'tests', 'letsencrypt.logs')
+, workDir: path.join(__dirname, '..', 'tests', 'letsencrypt.work')
+, server: LEP.stagingServer
 , text: true
 };
-var le = require('../').create(lep, bkDefaults);
+var le = require('../').create(lep, bkDefaults, {
+});
 
 var localCerts = require('localhost.daplie.com-certificates');
 var express = require('express');
 var app = express();
 
-app.use(le.middleware());
+app.use('/', function (req, res, next) {
+  console.log('[DEBUG]', req.method, req.protocol, req.hostname, req.url);
+  next();
+});
+app.use('/', le.middleware());
 
 var server = require('http').createServer();
 server.on('request', app);
-server.listen(80, function () {
+server.listen(port, function () {
   console.log('Listening http', server.address());
 });
 
@@ -40,7 +56,7 @@ var tlsServer = require('https').createServer({
 , SNICallback: le.sniCallback
 });
 tlsServer.on('request', app);
-tlsServer.listen(443, function () {
+tlsServer.listen(tlsPort, function () {
   console.log('Listening http', tlsServer.address());
 });
 
diff --git a/index.js b/index.js
index 4787645..df2e372 100644
--- a/index.js
+++ b/index.js
@@ -1,7 +1,9 @@
 'use strict';
 
+var PromiseA = require('bluebird');
+
 module.exports.create = function (letsencrypt, defaults, options) {
-  var PromiseA = require('bluebird');
+  letsencrypt = PromiseA.promisifyAll(letsencrypt);
   var tls = require('tls');
   var fs = PromiseA.promisifyAll(require('fs'));
   var utils = require('./utils');
@@ -28,18 +30,24 @@ module.exports.create = function (letsencrypt, defaults, options) {
   var now;
   var le;
 
-  options.cacheContextsFor = options.cacheContextsFor || (1 * 60 * 60 * 1000);
+  // TODO check certs on initial load
+  // TODO expect that certs expire every 90 days
+  // TODO check certs with setInterval?
+  //options.cacheContextsFor = options.cacheContextsFor || (1 * 60 * 60 * 1000);
 
   defaults.webroot = true;
 
   function merge(args) {
     var copy = {};
+
     Object.keys(defaults).forEach(function (key) {
       copy[key] = defaults[key];
     });
     Object.keys(args).forEach(function (key) {
       copy[key] = args[key];
     });
+
+    return copy;
   }
 
   function sniCallback(hostname, cb) {
@@ -65,21 +73,28 @@ module.exports.create = function (letsencrypt, defaults, options) {
 
   le = {
     validate: function () {
+      // TODO check dns, etc
+      return PromiseA.resolve();
     }
   , middleware: function () {
+      console.log('[DEBUG] webrootPath', defaults.webrootPath);
       var serveStatic = require('serve-static')(defaults.webrootPath);
       var prefix = '/.well-known/acme-challenge/';
 
       return function (req, res, next) {
-        if (0 === req.url.indexOf(prefix)) {
+        if (0 !== req.url.indexOf(prefix)) {
           next();
           return;
         }
 
+        console.log('[DEBUG] req.url 0', req.url);
         var pathname = req.url;
         req.url = req.url.substr(prefix.length - 1);
+        console.log('[DEBUG] req.url 1', req.url);
         serveStatic(req, res, function (err) {
+          console.log('[DEBUG] req.url 2', req.url);
           req.url = pathname;
+          console.log('[DEBUG] req.url 3', req.url);
           next(err);
         });
       };
diff --git a/package.json b/package.json
index 592dca3..bd2bd2a 100644
--- a/package.json
+++ b/package.json
@@ -34,6 +34,8 @@
     "localhost.daplie.com-certificates": "^1.1.2"
   },
   "dependencies": {
-    "letsencrypt-python": "^1.0.3"
+    "bluebird": "^3.0.6",
+    "letsencrypt-python": "^1.0.3",
+    "serve-static": "^1.10.0"
   }
 }