got this working with restify (as far as I can tell anyway)

lib/server.js

@@ -1,5 +1,5 @@
 var util = require('./util');
-var express = require('express');
+var restify = require('restify');
 var http = require('http');
 var EventEmitter = require('events').EventEmitter;
 var WebSocketServer = require('ws').Server;
@@ -9,8 +9,9 @@ function PeerServer(options) {
   if (!(this instanceof PeerServer)) return new PeerServer(options);
   EventEmitter.call(this);
 
-  this._app = express();
+  this._app = restify.createServer();
-  this._httpServer = http.createServer(this._app);
+  //this._app = express();
+  this._httpServer = this._app;
 
   this._options = util.extend({
     port: 80,
@@ -180,26 +181,29 @@ PeerServer.prototype._checkKey = function(key, ip, cb) {
   }
 }
 
-
+//This is where we change to restify
 /** Initialize HTTP server routes. */
 PeerServer.prototype._initializeHTTP = function() {
   var self = this;
   
-  this._app.use(express.bodyParser());
+  //this._app.use(express.bodyParser());
   this._app.use(util.allowCrossDomain);
   
-  this._app.options('/*', function(req, res, next) {
+  /*this._app.options('/*', function(req, res, next) {
     res.send(200);
-  });
+    return next();
+  });*/
 
   
   // Retrieve guaranteed random ID.
-  this._app.get('/:key/id', function(req, res) {
+  this._app.get('/:key/id', function(req, res, next) {
+    res.contentType = 'text/html';
     res.send(self._generateClientId(req.params.key));
+    return next();
   });
 
   // Server sets up HTTP streaming when you get post an ID.
-  this._app.post('/:key/:id/:token/id', function(req, res) {
+  this._app.post('/:key/:id/:token/id', function(req, res, next) {
     var id = req.params.id;
     var token = req.params.token;
     var key = req.params.key;
@@ -218,10 +222,11 @@ PeerServer.prototype._initializeHTTP = function() {
     } else {
       self._startStreaming(res, key, id, token);
     }
+    return next();
   });
 
     
-  var handle = function(req, res) {
+  var handle = function(req, res, next) {
     var key = req.params.key;
     var id = req.params.id;
     
@@ -250,6 +255,7 @@ PeerServer.prototype._initializeHTTP = function() {
       });
       res.send(200);
     }
+    return next();
   };
   
   this._app.post('/:key/:id/:token/offer', handle);

package.json

@@ -10,7 +10,7 @@
   "author": "Michelle Bu, Eric Zhang",
   "license": "MIT",
   "dependencies": {
-    "ws": "~0.4.25",
+    "restify": "~2.3.5",
-    "express": "~3.1.0"
+    "ws": "~0.4.25"
   }
 }