support specifying web server hostname through -b option

lib/cmd.js

@@ -62,13 +62,18 @@ Cmd.prototype.run = function() {
   var self = this;
   program
   .command('run [environment]')
-  .option('-p, --port [port]', 'port to run the dev webserver')
+  .option('-p, --port [port]', 'port to run the dev webserver (default: 8000)')
+  .option('-b, --host [host]', 'host to run the dev webserver (default: localhost)')
   .description('run dapp (default: development)')
   .action(function(env, options) {
     self.Embark.initConfig(env || 'development', {
         embarkConfig: 'embark.json'
     });
-    self.Embark.run({env: env || 'development', serverPort: options.port});
+    self.Embark.run({
+      env: env || 'development',
+      serverPort: options.port,
+      serverHost: options.host
+    });
   });
 };
 

lib/index.js

@@ -80,6 +80,7 @@ var Embark = {
         Embark.servicesMonitor = new ServicesMonitor({
           logger: Embark.logger,
           config: Embark.config,
+          serverHost: options.serverHost,
           serverPort: options.serverPort
         });
         Embark.servicesMonitor.startMonitor();
@@ -88,7 +89,11 @@ var Embark = {
       self.buildDeployGenerate.bind(self),
       function startAssetServer(callback) {
         Embark.monitor.setStatus("Starting Server");
-        var server = new Server({logger: self.logger, port: options.serverPort});
+        var server = new Server({
+          logger: self.logger,
+          host: options.serverHost,
+          port: options.serverPort
+        });
         server.start(callback);
       },
       function watchFilesForChanges(callback) {

lib/server.js

@@ -5,6 +5,7 @@ var serveStatic = require('serve-static');
 var Server = function(options) {
   this.dist = options.dist || 'dist/';
   this.port = options.port || 8000;
+  this.hostname = options.host || 'localhost';
   this.logger = options.logger;
 };
 
@@ -15,8 +16,8 @@ Server.prototype.start = function(callback) {
     serve(req, res, finalhandler(req, res));
   });
 
-  this.logger.info(("listening on port " + this.port).underline.green);
-  server.listen(this.port) ;
+  this.logger.info(("webserver available at http://" + this.hostname + ":" + this.port).underline.green);
+  server.listen(this.port, this.hostname) ;
   callback();
 };
 

lib/services.js

@@ -6,6 +6,7 @@ var ServicesMonitor = function(options) {
   this.logger = options.logger;
   this.interval = options.interval || 5000;
   this.config = options.config;
+  this.serverHost = options.serverHost || 'localhost';
   this.serverPort = options.serverPort || 8000;
 };
 
@@ -64,7 +65,7 @@ ServicesMonitor.prototype.check = function() {
     },
     function checkDevServer(result, callback) {
       self.logger.trace('checkDevServer');
-      result.push(('dev server (http://localhost:' + self.serverPort + ')').green);
+      result.push(('dev server (http://' + self.serverHost + ':' + self.serverPort + ')').green);
       callback(null, result);
     }
   ], function(err, result) {