it... works? YES!!!!

lib/master.js

@@ -1,7 +1,10 @@
 'use strict';
 
 module.exports.create = function (opts) {
-  if (!opts.letsencrypt) { opts.letsencrypt = require('letsencrypt').create({ server: opts.server }); }
+  if (!opts.letsencrypt) { opts.letsencrypt = require('letsencrypt').create({
+    server: opts.server
+  , webrootPath: require('os').tmpdir() + require('path').sep + 'acme-challenge'
+  }); }
   if ('function' !== typeof opts.approveDomains) {
     throw new Error("You must provide opts.approveDomains(domain, certs, callback) to approve certificates");
   }
@@ -33,16 +36,21 @@ module.exports.create = function (opts) {
       }
 
       log(opts.debug, 'about to approveDomains');
-      opts.approveDomains(msg.domain, msg.certs, function (err, results) {
+      opts.approveDomains(msg.options, msg.certs, function (err, results) {
         if (err) {
           log(opts.debug, 'Approval got ERROR', err.stack || err);
-          worker.send({ type: 'LE_RESPONSE', domain: msg.domain, error: err });
+          worker.send({
+            type: 'LE_RESPONSE'
+          , domain: msg.domain
+          , error: { message: err.message, code: err.code, stack: err.stack }
+          });
           return;
         }
 
         var promise;
 
-        // /*
+        //
+        /*
         var certs = require('localhost.coolaj86.com-certificates').merge({
           subject: msg.domain
         , altnames: [ msg.domain ]

lib/worker.js

@@ -21,16 +21,37 @@ module.exports.create = function (opts) {
     notBefore: opts.notBefore || (10 * 24 * 60 * 60 * 1000)
   , notAfter: opts.notAfter || (5 * 24 * 60 * 60 * 1000)
   , getCertificates: function (domain, certs, cb) {
-      opts.approveDomains(domain, certs, function (err, certs) {
-        process.send({ type: 'LE_REQUEST', domain: domain, options: { domains: [domain] }, certs: certs });
+      var workerOptions = { domains: [ domain ] };
+      opts.approveDomains(workerOptions, certs, function (_err, results) {
+        if (_err) {
+          cb(_err);
+          return;
+        }
+
+        var err = new Error("___MESSAGE___");
+        process.send({ type: 'LE_REQUEST', domain: domain, options: results.options, certs: results.certs });
 
         process.on('message', function (msg) {
           log(opts.debug, 'Message from master');
           log(opts.debug, msg);
 
-          if (msg.domain === domain) {
-            cb(null, msg.certs);
+          if (msg.domain !== domain) {
+            return;
           }
+
+          if (msg.error) {
+            err.message = msg.error.message || "unknown error sent from cluster master to worker";
+            err.stack.replace("___MESSAGE___", err.message);
+            err = {
+              message: err.message
+            , stack: err.stack
+            , data: { options: workerOptions, certs: certs }
+            };
+          } else {
+            err = null;
+          }
+
+          cb(err, msg.certs);
         });
       });
     }

serve.js

@@ -1,6 +1,8 @@
 'use strict';
 
 var cluster = require('cluster');
+// TODO the le-challenge-<<strategy>> should be shared between worker and server
+var webrootPath = require('os').tmpdir() + require('path').sep + 'acme-challenge';
 
 function runMaster() {
   var numCores = 2; // // Math.max(2, require('os').cpus().length)
@@ -11,17 +13,18 @@ function runMaster() {
 
 
   , server: 'staging'
+  , webrootPath: webrootPath
 
 
 
-  , approveDomains: function (domain, certs, cb) {
+  , approveDomains: function (masterOptions, certs, cb) {
       // Depending on your setup it may be more efficient
       // for you to implement the approveDomains function
       // in your master or in your workers.
       //
       // Since we implement it in the worker (below) in this example
       // we'll give it an immediate approval here in the master
-      var results = { domain: domain, options: { domains: [domain] }, certs: certs };
+      var results = { domain: masterOptions.domain, options: masterOptions, certs: certs };
       cb(null, results);
     }
   });
@@ -37,24 +40,51 @@ function runWorker() {
   var worker = require('./lib/worker').create({
     debug: true
 
+
+
     // We want both to renew well before the expiration date
     // and also to stagger the renewals, just a touch
     // here we specify to renew between 10 and 15 days
   , notBefore: 15 * 24 * 60 * 60 * 1000
   , notAfter: 10 * 24 * 60 * 60 * 1000 // optional
 
-  , webrootPath: require('os').tmpdir() + require('path').sep + 'acme-challenge'
+
+
+  , webrootPath: webrootPath
+
+
+
     /*
+    challenge: {
+      get: function (ignored, domain, token, cb) {
+        cb(null, keyAuthorization);
+      }
+    }
   , getChallenge: function (domain, token, cb) {
-      // the default behavior is to pass a message to master,
+      // the default behavior is to use le-challenge-fs
+      // TODO maybe provide a built-in option to pass a message to master to use its
+      // but you could overwrite that with a function to pass a message to master or,
       // but if needed for performance, that can be overwritten here
       cb(null, );
     }
     */
-  , approveDomains: function (domain, certs, cb) {
+
+
+    // There are two approval processes:
+    // 1. emails are tied to private keys (accounts) which must agree to the tos url
+    // 2. domains are tied to accounts (and should be verifiable via loopback)
+  , approveDomains: function (workerOptions, certs, cb) {
       // opts = { domains, email, agreeTos, tosUrl }
       // certs = { subject, altnames, expiresAt, issuedAt }
-      var results = { domain: domain, options: { domains: [domain] }, certs: certs };
+      var results = {
+        domain: workerOptions.domains[0]
+      , options: {
+          domains: certs && certs.altnames || workerOptions.domains
+        , email: 'aj@coolaj86.com'
+        , agreeTos: true
+        }
+      , certs: certs
+      };