[Pkg-javascript-commits] [sockjs-client] 47/350: Move to gulp build system with browserify and json3

tonnerre at ancient-solutions.com tonnerre at ancient-solutions.com
Fri Aug 5 01:03:40 UTC 2016


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tonnerre-guest pushed a commit to branch upstream
in repository sockjs-client.

commit 48259a310be57fdbd9ac783fcf5df436ced77a39
Author: Bryce Kahle <bkahle at gmail.com>
Date:   Fri May 23 17:49:33 2014 -0400

    Move to gulp build system with browserify and json3
---
 .jshintrc                         |  15 ++
 gulpfile.js                       |  20 +++
 lib/abstract-xhr.js               | 107 +++++++++++++++
 lib/ajax-based.js                 |  51 +++++++
 lib/all.js                        |   9 --
 lib/buffered-sender.js            |  71 ++++++++++
 lib/dom.js                        | 208 ----------------------------
 lib/dom2.js                       | 198 ---------------------------
 lib/eventemitter.js               |  10 +-
 lib/facade.js                     |  26 ++++
 lib/index.js                      |  37 -----
 lib/info-receiver-fake.js         |  24 ++++
 lib/info-receiver-iframe.js       |  47 +++++++
 lib/info-receiver.js              |  63 +++++++++
 lib/info.js                       | 125 -----------------
 lib/json2.min.js                  |   1 -
 lib/reventtarget.js               |   6 +
 lib/simpleevent.js                |   3 +
 lib/sockjs.js                     | 160 +++++++++++++++++++---
 lib/test-hooks.js                 |  16 ---
 lib/trans-eventsource.js          |  14 ++
 lib/trans-iframe-eventsource.js   |  16 +--
 lib/trans-iframe-htmlfile.js      |  13 +-
 lib/trans-iframe-within.js        |  94 -------------
 lib/trans-iframe-xhr-polling.js   |  14 +-
 lib/trans-iframe.js               |  16 ++-
 lib/trans-jsonp-polling.js        | 188 ++++++++++++++++++++++++--
 lib/trans-jsonp-receiver.js       | 116 ----------------
 lib/trans-polling.js              |   7 +-
 lib/trans-receiver-eventsource.js |  13 +-
 lib/trans-receiver-htmlfile.js    |  19 ++-
 lib/trans-receiver-xhr.js         |  12 +-
 lib/trans-sender.js               | 142 -------------------
 lib/trans-websocket.js            |  16 ++-
 lib/trans-xhr.js                  |  94 -------------
 lib/utils.js                      | 278 ++++++++++++++++++++++++++++++++++----
 lib/xdr-polling.js                |  24 ++++
 lib/xdr-streaming.js              |  29 ++++
 lib/xdr.js                        |  65 +++++++++
 lib/xhr-cors.js                   |  12 ++
 lib/xhr-local.js                  |  16 +++
 lib/xhr-polling.js                |  25 ++++
 lib/xhr-streaming.js              |  38 ++++++
 package.json                      |  10 +-
 44 files changed, 1333 insertions(+), 1135 deletions(-)

diff --git a/.jshintrc b/.jshintrc
new file mode 100644
index 0000000..b31c343
--- /dev/null
+++ b/.jshintrc
@@ -0,0 +1,15 @@
+{
+  "undef": true
+, "unused": "vars"
+, "newcap": true
+, "laxcomma": true
+, "laxbreak": true
+, "strict": true
+, "node": true
+, "browser": true
+, "predef": [
+    "ActiveXObject"
+  , "XDomainRequest"
+  , "EventSource"
+  ]
+}
\ No newline at end of file
diff --git a/gulpfile.js b/gulpfile.js
new file mode 100644
index 0000000..e855df1
--- /dev/null
+++ b/gulpfile.js
@@ -0,0 +1,20 @@
+'use strict';
+
+var gulp = require('gulp')
+  , browserify = require('browserify')
+  , source = require('vinyl-source-stream')
+  , pkg = require('./package.json')
+  ;
+
+gulp.task('default', function() {
+
+});
+
+gulp.task('browserify', function() {
+    return browserify('./lib/sockjs.js')
+        .bundle({
+            standalone: 'SockJS'
+        })
+        .pipe(source('sockjs.js'))
+        .pipe(gulp.dest('./build/'));
+});
\ No newline at end of file
diff --git a/lib/abstract-xhr.js b/lib/abstract-xhr.js
new file mode 100644
index 0000000..fd2772a
--- /dev/null
+++ b/lib/abstract-xhr.js
@@ -0,0 +1,107 @@
+'use strict';
+
+var EventEmitter = require('./eventemitter');
+var utils = require('./utils');
+
+function AbstractXHRObject() {
+}
+
+AbstractXHRObject.prototype = new EventEmitter(['chunk', 'finish']);
+
+AbstractXHRObject.prototype._start = function(method, url, payload, opts) {
+    var that = this;
+
+    try {
+        that.xhr = new XMLHttpRequest();
+    } catch(x) {}
+
+    if (!that.xhr) {
+        try {
+            that.xhr = new window.ActiveXObject('Microsoft.XMLHTTP');
+        } catch(x) {}
+    }
+    if (window.ActiveXObject || window.XDomainRequest) {
+        // IE8 caches even POSTs
+        url += ((url.indexOf('?') === -1) ? '?' : '&') + 't='+(+new Date());
+    }
+
+    // Explorer tends to keep connection open, even after the
+    // tab gets closed: http://bugs.jquery.com/ticket/5280
+    that.unload_ref = utils.unload_add(function(){that._cleanup(true);});
+    try {
+        that.xhr.open(method, url, true);
+    } catch(e) {
+        // IE raises an exception on wrong port.
+        that.emit('finish', 0, '');
+        that._cleanup();
+        return;
+    }
+
+    if (!opts || !opts.no_credentials) {
+        // Mozilla docs says https://developer.mozilla.org/en/XMLHttpRequest :
+        // "This never affects same-site requests."
+        that.xhr.withCredentials = 'true';
+    }
+    if (opts && opts.headers) {
+        for(var key in opts.headers) {
+            that.xhr.setRequestHeader(key, opts.headers[key]);
+        }
+    }
+
+    that.xhr.onreadystatechange = function() {
+        if (that.xhr) {
+            var x = that.xhr;
+            var text, status;
+            switch (x.readyState) {
+            case 3:
+                // IE doesn't like peeking into responseText or status
+                // on Microsoft.XMLHTTP and readystate=3
+                try {
+                    status = x.status;
+                    text = x.responseText;
+                } catch (e) {}
+                // IE returns 1223 for 204: http://bugs.jquery.com/ticket/1450
+                if (status === 1223) status = 204;
+
+                // IE does return readystate == 3 for 404 answers.
+                if (text && text.length > 0) {
+                    that.emit('chunk', status, text);
+                }
+                break;
+            case 4:
+                status = x.status;
+                // IE returns 1223 for 204: http://bugs.jquery.com/ticket/1450
+                if (status === 1223) status = 204;
+
+                that.emit('finish', status, x.responseText);
+                that._cleanup(false);
+                break;
+            }
+        }
+    };
+    that.xhr.send(payload);
+};
+
+AbstractXHRObject.prototype._cleanup = function(abort) {
+    var that = this;
+    if (!that.xhr) return;
+    utils.unload_del(that.unload_ref);
+
+    // IE needs this field to be a function
+    that.xhr.onreadystatechange = function(){};
+
+    if (abort) {
+        try {
+            that.xhr.abort();
+        } catch(x) {}
+    }
+    that.unload_ref = that.xhr = null;
+};
+
+AbstractXHRObject.prototype.close = function() {
+    var that = this;
+    that.nuke();
+    that._cleanup(true);
+};
+
+module.exports = AbstractXHRObject;
\ No newline at end of file
diff --git a/lib/ajax-based.js b/lib/ajax-based.js
new file mode 100644
index 0000000..a74dbeb
--- /dev/null
+++ b/lib/ajax-based.js
@@ -0,0 +1,51 @@
+'use strict';
+/*
+ * ***** BEGIN LICENSE BLOCK *****
+ * Copyright (c) 2011-2012 VMware, Inc.
+ *
+ * For the license see COPYING.
+ * ***** END LICENSE BLOCK *****
+ */
+
+var BufferedSender = require('./buffered-sender');
+var Polling = require('./trans-polling');
+
+function AjaxBasedTransport() {
+}
+
+AjaxBasedTransport.prototype = new BufferedSender();
+
+AjaxBasedTransport.prototype.run = function(ri, trans_url,
+                                            url_suffix, Receiver, AjaxObject) {
+    var that = this;
+    that.ri = ri;
+    that.trans_url = trans_url;
+    that.send_constructor(createAjaxSender(AjaxObject));
+    that.poll = new Polling(ri, Receiver,
+                            trans_url + url_suffix, AjaxObject);
+};
+
+AjaxBasedTransport.prototype.doCleanup = function() {
+    var that = this;
+    if (that.poll) {
+        that.poll.abort();
+        that.poll = null;
+    }
+};
+
+function createAjaxSender(AjaxObject) {
+    return function(url, payload, callback) {
+        var opt = {};
+        if (typeof payload === 'string') opt.headers = {'Content-type':'text/plain'};
+        var xo = new AjaxObject('POST', url + '/xhr_send', payload, opt);
+        xo.onfinish = function(status, text) {
+            callback(status === 200 || status === 204,
+                     'http status ' + status);
+        };
+        return function(abort_reason) {
+            callback(false, abort_reason);
+        };
+    };
+}
+
+module.exports = AjaxBasedTransport;
\ No newline at end of file
diff --git a/lib/all.js b/lib/all.js
deleted file mode 100644
index 3391dd7..0000000
--- a/lib/all.js
+++ /dev/null
@@ -1,9 +0,0 @@
-/* SockJS client, version <!-- version -->, http://sockjs.org, MIT License
-
-<!-- include LICENSE -->
-*/
-
-// JSON2 by Douglas Crockford (minified).
-<!-- include lib/json2.min.js -->
-
-<!-- include_and_minify lib/index.js c -->
diff --git a/lib/buffered-sender.js b/lib/buffered-sender.js
new file mode 100644
index 0000000..20e2572
--- /dev/null
+++ b/lib/buffered-sender.js
@@ -0,0 +1,71 @@
+'use strict';
+/*
+ * ***** BEGIN LICENSE BLOCK *****
+ * Copyright (c) 2011-2012 VMware, Inc.
+ *
+ * For the license see COPYING.
+ * ***** END LICENSE BLOCK *****
+ */
+
+var utils = require('./utils');
+
+function BufferedSender() {}
+BufferedSender.prototype.send_constructor = function(sender) {
+    var that = this;
+    that.send_buffer = [];
+    that.sender = sender;
+};
+BufferedSender.prototype.doSend = function(message) {
+    var that = this;
+    that.send_buffer.push(message);
+    if (!that.send_stop) {
+        that.send_schedule();
+    }
+};
+
+// For polling transports in a situation when in the message callback,
+// new message is being send. If the sending connection was started
+// before receiving one, it is possible to saturate the network and
+// timeout due to the lack of receiving socket. To avoid that we delay
+// sending messages by some small time, in order to let receiving
+// connection be started beforehand. This is only a halfmeasure and
+// does not fix the big problem, but it does make the tests go more
+// stable on slow networks.
+BufferedSender.prototype.send_schedule_wait = function() {
+    var that = this;
+    var tref;
+    that.send_stop = function() {
+        that.send_stop = null;
+        clearTimeout(tref);
+    };
+    tref = utils.delay(25, function() {
+        that.send_stop = null;
+        that.send_schedule();
+    });
+};
+
+BufferedSender.prototype.send_schedule = function() {
+    var that = this;
+    if (that.send_buffer.length > 0) {
+        var payload = '[' + that.send_buffer.join(',') + ']';
+        that.send_stop = that.sender(that.trans_url, payload, function(success, abort_reason) {
+            that.send_stop = null;
+            if (success === false) {
+                that.ri._didClose(1006, 'Sending error ' + abort_reason);
+            } else {
+                that.send_schedule_wait();
+            }
+        });
+        that.send_buffer = [];
+    }
+};
+
+BufferedSender.prototype.send_destructor = function() {
+    var that = this;
+    if (that._send_stop) {
+        that._send_stop();
+    }
+    that._send_stop = null;
+};
+
+module.exports = BufferedSender;
\ No newline at end of file
diff --git a/lib/dom.js b/lib/dom.js
deleted file mode 100644
index 4a903e2..0000000
--- a/lib/dom.js
+++ /dev/null
@@ -1,208 +0,0 @@
-/*
- * ***** BEGIN LICENSE BLOCK *****
- * Copyright (c) 2011-2012 VMware, Inc.
- *
- * For the license see COPYING.
- * ***** END LICENSE BLOCK *****
- */
-
-// May be used by htmlfile jsonp and transports.
-var MPrefix = '_sockjs_global';
-utils.createHook = function() {
-    var window_id = 'a' + utils.random_string(8);
-    if (!(MPrefix in _window)) {
-        var map = {};
-        _window[MPrefix] = function(window_id) {
-            if (!(window_id in map)) {
-                map[window_id] = {
-                    id: window_id,
-                    del: function() {delete map[window_id];}
-                };
-            }
-            return map[window_id];
-        }
-    }
-    return _window[MPrefix](window_id);
-};
-
-
-
-utils.attachMessage = function(listener) {
-    utils.attachEvent('message', listener);
-};
-utils.attachEvent = function(event, listener) {
-    if (typeof _window.addEventListener !== 'undefined') {
-        _window.addEventListener(event, listener, false);
-    } else {
-        // IE quirks.
-        // According to: http://stevesouders.com/misc/test-postmessage.php
-        // the message gets delivered only to 'document', not 'window'.
-        _document.attachEvent("on" + event, listener);
-        // I get 'window' for ie8.
-        _window.attachEvent("on" + event, listener);
-    }
-};
-
-utils.detachMessage = function(listener) {
-    utils.detachEvent('message', listener);
-};
-utils.detachEvent = function(event, listener) {
-    if (typeof _window.addEventListener !== 'undefined') {
-        _window.removeEventListener(event, listener, false);
-    } else {
-        _document.detachEvent("on" + event, listener);
-        _window.detachEvent("on" + event, listener);
-    }
-};
-
-
-var on_unload = {};
-// Things registered after beforeunload are to be called immediately.
-var after_unload = false;
-
-var trigger_unload_callbacks = function() {
-    for(var ref in on_unload) {
-        on_unload[ref]();
-        delete on_unload[ref];
-    };
-};
-
-var unload_triggered = function() {
-    if(after_unload) return;
-    after_unload = true;
-    trigger_unload_callbacks();
-};
-
-// 'unload' alone is not reliable in opera within an iframe, but we
-// can't use `beforeunload` as IE fires it on javascript: links.
-utils.attachEvent('unload', unload_triggered);
-
-utils.unload_add = function(listener) {
-    var ref = utils.random_string(8);
-    on_unload[ref] = listener;
-    if (after_unload) {
-        utils.delay(trigger_unload_callbacks);
-    }
-    return ref;
-};
-utils.unload_del = function(ref) {
-    if (ref in on_unload)
-        delete on_unload[ref];
-};
-
-
-utils.createIframe = function (iframe_url, error_callback) {
-    var iframe = _document.createElement('iframe');
-    var tref, unload_ref;
-    var unattach = function() {
-        clearTimeout(tref);
-        // Explorer had problems with that.
-        try {iframe.onload = null;} catch (x) {}
-        iframe.onerror = null;
-    };
-    var cleanup = function() {
-        if (iframe) {
-            unattach();
-            // This timeout makes chrome fire onbeforeunload event
-            // within iframe. Without the timeout it goes straight to
-            // onunload.
-            setTimeout(function() {
-                if(iframe) {
-                    iframe.parentNode.removeChild(iframe);
-                }
-                iframe = null;
-            }, 0);
-            utils.unload_del(unload_ref);
-        }
-    };
-    var onerror = function(r) {
-        if (iframe) {
-            cleanup();
-            error_callback(r);
-        }
-    };
-    var post = function(msg, origin) {
-        try {
-            // When the iframe is not loaded, IE raises an exception
-            // on 'contentWindow'.
-            if (iframe && iframe.contentWindow) {
-                setTimeout(function() {
-                    iframe.contentWindow.postMessage(msg, origin);
-                }, 0);
-            }
-        } catch (x) {};
-    };
-
-    iframe.src = iframe_url;
-    iframe.style.display = 'none';
-    iframe.style.position = 'absolute';
-    iframe.onerror = function(){onerror('onerror');};
-    iframe.onload = function() {
-        // `onload` is triggered before scripts on the iframe are
-        // executed. Give it few seconds to actually load stuff.
-        clearTimeout(tref);
-        tref = setTimeout(function(){onerror('onload timeout');}, 2000);
-    };
-    _document.body.appendChild(iframe);
-    tref = setTimeout(function(){onerror('timeout');}, 15000);
-    unload_ref = utils.unload_add(cleanup);
-    return {
-        post: post,
-        cleanup: cleanup,
-        loaded: unattach
-    };
-};
-
-utils.createHtmlfile = function (iframe_url, error_callback) {
-    var doc = new ActiveXObject('htmlfile');
-    var tref, unload_ref;
-    var iframe;
-    var unattach = function() {
-        clearTimeout(tref);
-    };
-    var cleanup = function() {
-        if (doc) {
-            unattach();
-            utils.unload_del(unload_ref);
-            iframe.parentNode.removeChild(iframe);
-            iframe = doc = null;
-            CollectGarbage();
-        }
-    };
-    var onerror = function(r)  {
-        if (doc) {
-            cleanup();
-            error_callback(r);
-        }
-    };
-    var post = function(msg, origin) {
-        try {
-            // When the iframe is not loaded, IE raises an exception
-            // on 'contentWindow'.
-            if (iframe && iframe.contentWindow) {
-                setTimeout(function() {
-                    iframe.contentWindow.postMessage(msg, origin);
-                }, 0);
-            }
-        } catch (x) {};
-    };
-
-    doc.open();
-    doc.write('<html><s' + 'cript>' +
-              'document.domain="' + document.domain + '";' +
-              '</s' + 'cript></html>');
-    doc.close();
-    doc.parentWindow[WPrefix] = _window[WPrefix];
-    var c = doc.createElement('div');
-    doc.body.appendChild(c);
-    iframe = doc.createElement('iframe');
-    c.appendChild(iframe);
-    iframe.src = iframe_url;
-    tref = setTimeout(function(){onerror('timeout');}, 15000);
-    unload_ref = utils.unload_add(cleanup);
-    return {
-        post: post,
-        cleanup: cleanup,
-        loaded: unattach
-    };
-};
diff --git a/lib/dom2.js b/lib/dom2.js
deleted file mode 100644
index 2183d30..0000000
--- a/lib/dom2.js
+++ /dev/null
@@ -1,198 +0,0 @@
-/*
- * ***** BEGIN LICENSE BLOCK *****
- * Copyright (c) 2011-2012 VMware, Inc.
- *
- * For the license see COPYING.
- * ***** END LICENSE BLOCK *****
- */
-
-var AbstractXHRObject = function(){};
-AbstractXHRObject.prototype = new EventEmitter(['chunk', 'finish']);
-
-AbstractXHRObject.prototype._start = function(method, url, payload, opts) {
-    var that = this;
-
-    try {
-        that.xhr = new XMLHttpRequest();
-    } catch(x) {};
-
-    if (!that.xhr) {
-        try {
-            that.xhr = new _window.ActiveXObject('Microsoft.XMLHTTP');
-        } catch(x) {};
-    }
-    if (_window.ActiveXObject || _window.XDomainRequest) {
-        // IE8 caches even POSTs
-        url += ((url.indexOf('?') === -1) ? '?' : '&') + 't='+(+new Date);
-    }
-
-    // Explorer tends to keep connection open, even after the
-    // tab gets closed: http://bugs.jquery.com/ticket/5280
-    that.unload_ref = utils.unload_add(function(){that._cleanup(true);});
-    try {
-        that.xhr.open(method, url, true);
-    } catch(e) {
-        // IE raises an exception on wrong port.
-        that.emit('finish', 0, '');
-        that._cleanup();
-        return;
-    };
-
-    if (!opts || !opts.no_credentials) {
-        // Mozilla docs says https://developer.mozilla.org/en/XMLHttpRequest :
-        // "This never affects same-site requests."
-        that.xhr.withCredentials = 'true';
-    }
-    if (opts && opts.headers) {
-        for(var key in opts.headers) {
-            that.xhr.setRequestHeader(key, opts.headers[key]);
-        }
-    }
-
-    that.xhr.onreadystatechange = function() {
-        if (that.xhr) {
-            var x = that.xhr;
-            switch (x.readyState) {
-            case 3:
-                // IE doesn't like peeking into responseText or status
-                // on Microsoft.XMLHTTP and readystate=3
-                try {
-                    var status = x.status;
-                    var text = x.responseText;
-                } catch (e) {};
-                // IE returns 1223 for 204: http://bugs.jquery.com/ticket/1450
-                if (status === 1223) status = 204;
-
-                // IE does return readystate == 3 for 404 answers.
-                if (text && text.length > 0) {
-                    that.emit('chunk', status, text);
-                }
-                break;
-            case 4:
-                var status = x.status;
-                // IE returns 1223 for 204: http://bugs.jquery.com/ticket/1450
-                if (status === 1223) status = 204;
-
-                that.emit('finish', status, x.responseText);
-                that._cleanup(false);
-                break;
-            }
-        }
-    };
-    that.xhr.send(payload);
-};
-
-AbstractXHRObject.prototype._cleanup = function(abort) {
-    var that = this;
-    if (!that.xhr) return;
-    utils.unload_del(that.unload_ref);
-
-    // IE needs this field to be a function
-    that.xhr.onreadystatechange = function(){};
-
-    if (abort) {
-        try {
-            that.xhr.abort();
-        } catch(x) {};
-    }
-    that.unload_ref = that.xhr = null;
-};
-
-AbstractXHRObject.prototype.close = function() {
-    var that = this;
-    that.nuke();
-    that._cleanup(true);
-};
-
-var XHRCorsObject = utils.XHRCorsObject = function() {
-    var that = this, args = arguments;
-    utils.delay(function(){that._start.apply(that, args);});
-};
-XHRCorsObject.prototype = new AbstractXHRObject();
-
-var XHRLocalObject = utils.XHRLocalObject = function(method, url, payload) {
-    var that = this;
-    utils.delay(function(){
-        that._start(method, url, payload, {
-            no_credentials: true
-        });
-    });
-};
-XHRLocalObject.prototype = new AbstractXHRObject();
-
-
-
-// References:
-//   http://ajaxian.com/archives/100-line-ajax-wrapper
-//   http://msdn.microsoft.com/en-us/library/cc288060(v=VS.85).aspx
-var XDRObject = utils.XDRObject = function(method, url, payload) {
-    var that = this;
-    utils.delay(function(){that._start(method, url, payload);});
-};
-XDRObject.prototype = new EventEmitter(['chunk', 'finish']);
-XDRObject.prototype._start = function(method, url, payload) {
-    var that = this;
-    var xdr = new XDomainRequest();
-    // IE caches even POSTs
-    url += ((url.indexOf('?') === -1) ? '?' : '&') + 't='+(+new Date);
-
-    var onerror = xdr.ontimeout = xdr.onerror = function() {
-        that.emit('finish', 0, '');
-        that._cleanup(false);
-    };
-    xdr.onprogress = function() {
-        that.emit('chunk', 200, xdr.responseText);
-    };
-    xdr.onload = function() {
-        that.emit('finish', 200, xdr.responseText);
-        that._cleanup(false);
-    };
-    that.xdr = xdr;
-    that.unload_ref = utils.unload_add(function(){that._cleanup(true);});
-    try {
-        // Fails with AccessDenied if port number is bogus
-        that.xdr.open(method, url);
-        that.xdr.send(payload);
-    } catch(x) {
-        onerror();
-    }
-};
-
-XDRObject.prototype._cleanup = function(abort) {
-    var that = this;
-    if (!that.xdr) return;
-    utils.unload_del(that.unload_ref);
-
-    that.xdr.ontimeout = that.xdr.onerror = that.xdr.onprogress =
-        that.xdr.onload = null;
-    if (abort) {
-        try {
-            that.xdr.abort();
-        } catch(x) {};
-    }
-    that.unload_ref = that.xdr = null;
-};
-
-XDRObject.prototype.close = function() {
-    var that = this;
-    that.nuke();
-    that._cleanup(true);
-};
-
-// 1. Is natively via XHR
-// 2. Is natively via XDR
-// 3. Nope, but postMessage is there so it should work via the Iframe.
-// 4. Nope, sorry.
-utils.isXHRCorsCapable = function() {
-    if (_window.XMLHttpRequest && 'withCredentials' in new XMLHttpRequest()) {
-        return 1;
-    }
-    // XDomainRequest doesn't work if page is served from file://
-    if (_window.XDomainRequest && _document.domain) {
-        return 2;
-    }
-    if (IframeTransport.enabled()) {
-        return 3;
-    }
-    return 4;
-};
diff --git a/lib/eventemitter.js b/lib/eventemitter.js
index f0c9206..ad43524 100644
--- a/lib/eventemitter.js
+++ b/lib/eventemitter.js
@@ -1,3 +1,4 @@
+'use strict';
 /*
  * ***** BEGIN LICENSE BLOCK *****
  * Copyright (c) 2011-2012 VMware, Inc.
@@ -6,6 +7,9 @@
  * ***** END LICENSE BLOCK *****
  */
 
+var utils = require('./utils');
+var JSON3 = require('json3').noConflict();
+
 var EventEmitter = function(events) {
     var that = this;
     that._events = events || [];
@@ -41,8 +45,8 @@ EventEmitter.prototype.on = function(type, callback) {
 EventEmitter.prototype._verifyType = function(type) {
     var that = this;
     if (utils.arrIndexOf(that._events, type) === -1) {
-        utils.log('Event ' + JSON.stringify(type) +
-                  ' not listed ' + JSON.stringify(that._events) +
+        utils.log('Event ' + JSON3.stringify(type) +
+                  ' not listed ' + JSON3.stringify(that._events) +
                   ' in ' + that);
     }
 };
@@ -55,3 +59,5 @@ EventEmitter.prototype.nuke = function() {
     }
     that._listeners = {};
 };
+
+module.exports = EventEmitter;
diff --git a/lib/facade.js b/lib/facade.js
new file mode 100644
index 0000000..0e45ac2
--- /dev/null
+++ b/lib/facade.js
@@ -0,0 +1,26 @@
+'use strict';
+/*
+ * ***** BEGIN LICENSE BLOCK *****
+ * Copyright (c) 2011-2012 VMware, Inc.
+ *
+ * For the license see COPYING.
+ * ***** END LICENSE BLOCK *****
+ */
+
+var utils = require('./utils');
+
+function FacadeJS() {}
+FacadeJS.prototype._didClose = function (code, reason) {
+    utils.postMessage('t', utils.closeFrame(code, reason));
+};
+FacadeJS.prototype._didMessage = function (frame) {
+    utils.postMessage('t', frame);
+};
+FacadeJS.prototype._doSend = function (data) {
+    this._transport.doSend(data);
+};
+FacadeJS.prototype._doCleanup = function () {
+    this._transport.doCleanup();
+};
+
+module.exports = FacadeJS;
\ No newline at end of file
diff --git a/lib/index.js b/lib/index.js
deleted file mode 100644
index 96262d3..0000000
--- a/lib/index.js
+++ /dev/null
@@ -1,37 +0,0 @@
-// Public object
-SockJS = (function(){
-              var _document = document;
-              var _window = window;
-              var utils = {};
-
-<!-- include lib/reventtarget.js -->
-<!-- include lib/simpleevent.js -->
-<!-- include lib/eventemitter.js -->
-<!-- include lib/utils.js -->
-<!-- include lib/dom.js -->
-<!-- include lib/dom2.js -->
-<!-- include lib/sockjs.js -->
-<!-- include lib/trans-websocket.js -->
-<!-- include lib/trans-sender.js -->
-<!-- include lib/trans-jsonp-receiver.js -->
-<!-- include lib/trans-jsonp-polling.js -->
-<!-- include lib/trans-xhr.js -->
-<!-- include lib/trans-iframe.js -->
-<!-- include lib/trans-iframe-within.js -->
-<!-- include lib/info.js -->
-<!-- include lib/trans-iframe-eventsource.js -->
-<!-- include lib/trans-iframe-xhr-polling.js -->
-<!-- include lib/trans-iframe-htmlfile.js -->
-<!-- include lib/trans-polling.js -->
-<!-- include lib/trans-receiver-eventsource.js -->
-<!-- include lib/trans-receiver-htmlfile.js -->
-<!-- include lib/trans-receiver-xhr.js -->
-<!-- include lib/test-hooks.js -->
-                  return SockJS;
-          })();
-if ('_sockjs_onload' in window) setTimeout(_sockjs_onload, 1);
-
-// AMD compliance
-if (typeof define === 'function' && define.amd) {
-    define([], function(){return SockJS;});
-}
diff --git a/lib/info-receiver-fake.js b/lib/info-receiver-fake.js
new file mode 100644
index 0000000..b85d7d1
--- /dev/null
+++ b/lib/info-receiver-fake.js
@@ -0,0 +1,24 @@
+'use strict';
+/*
+ * ***** BEGIN LICENSE BLOCK *****
+ * Copyright (c) 2011-2012 VMware, Inc.
+ *
+ * For the license see COPYING.
+ * ***** END LICENSE BLOCK *****
+ */
+
+var utils = require('./utils');
+var EventEmitter = require('./eventemitter');
+
+var InfoReceiverFake = function() {
+    // It may not be possible to do cross domain AJAX to get the info
+    // data, for example for IE7. But we want to run JSONP, so let's
+    // fake the response, with rtt=2s (rto=6s).
+    var that = this;
+    utils.delay(function() {
+        that.emit('finish', {}, 2000);
+    });
+};
+InfoReceiverFake.prototype = new EventEmitter(['finish']);
+
+module.exports = InfoReceiverFake;
\ No newline at end of file
diff --git a/lib/info-receiver-iframe.js b/lib/info-receiver-iframe.js
new file mode 100644
index 0000000..13d4873
--- /dev/null
+++ b/lib/info-receiver-iframe.js
@@ -0,0 +1,47 @@
+'use strict';
+/*
+ * ***** BEGIN LICENSE BLOCK *****
+ * Copyright (c) 2011-2012 VMware, Inc.
+ *
+ * For the license see COPYING.
+ * ***** END LICENSE BLOCK *****
+ */
+
+var utils = require('./utils');
+var EventEmitter = require('./eventemitter');
+var IframeTransport = require('./trans-iframe');
+var JSON3 = require('json3').noConflict();
+
+function InfoReceiverIframe(base_url) {
+    var that = this;
+    var go = function() {
+        var ifr = new IframeTransport();
+        ifr.protocol = 'w-iframe-info-receiver';
+        var fun = function(r) {
+            if (typeof r === 'string' && r.substr(0,1) === 'm') {
+                var d = JSON3.parse(r.substr(1));
+                var info = d[0], rtt = d[1];
+                that.emit('finish', info, rtt);
+            } else {
+                that.emit('finish');
+            }
+            ifr.doCleanup();
+            ifr = null;
+        };
+        var mock_ri = {
+            _options: {},
+            _didClose: fun,
+            _didMessage: fun
+        };
+        ifr.i_constructor(mock_ri, base_url, base_url);
+    };
+    if(!document.body) {
+        utils.attachEvent('load', go);
+    } else {
+        go();
+    }
+}
+
+InfoReceiverIframe.prototype = new EventEmitter(['finish']);
+
+module.exports = InfoReceiverIframe;
\ No newline at end of file
diff --git a/lib/info-receiver.js b/lib/info-receiver.js
new file mode 100644
index 0000000..b900c9b
--- /dev/null
+++ b/lib/info-receiver.js
@@ -0,0 +1,63 @@
+'use strict';
+/*
+ * ***** BEGIN LICENSE BLOCK *****
+ * Copyright (c) 2011-2012 VMware, Inc.
+ *
+ * For the license see COPYING.
+ * ***** END LICENSE BLOCK *****
+ */
+
+var utils = require('./utils');
+var EventEmitter = require('./eventemitter');
+var FacadeJS = require('./facade');
+var JSON3 = require('json3').noConflict();
+
+function InfoReceiver(base_url, AjaxObject) {
+    var that = this;
+    utils.delay(function(){that.doXhr(base_url, AjaxObject);});
+}
+
+InfoReceiver.prototype = new EventEmitter(['finish']);
+
+InfoReceiver.prototype.doXhr = function(base_url, AjaxObject) {
+    var that = this;
+    var t0 = (new Date()).getTime();
+    var xo = new AjaxObject('GET', base_url + '/info');
+
+    var tref = utils.delay(8000,
+                           function(){xo.ontimeout();});
+
+    xo.onfinish = function(status, text) {
+        clearTimeout(tref);
+        tref = null;
+        if (status === 200) {
+            var rtt = (new Date()).getTime() - t0;
+            var info;
+            if (text) {
+                try {
+                    info = JSON3.parse(text);
+                }
+                catch (e) {}
+            }
+            if (typeof info !== 'object') info = {};
+            that.emit('finish', info, rtt);
+        } else {
+            that.emit('finish');
+        }
+    };
+    xo.ontimeout = function() {
+        xo.close();
+        that.emit('finish');
+    };
+};
+
+module.exports = InfoReceiver;
+
+var WInfoReceiverIframe = FacadeJS['w-iframe-info-receiver'] = function(ri, _trans_url, base_url) {
+    var ir = new InfoReceiver(base_url, utils.XHRLocalObject);
+    ir.onfinish = function(info, rtt) {
+        ri._didMessage('m'+JSON3.stringify([info, rtt]));
+        ri._didClose();
+    };
+};
+WInfoReceiverIframe.prototype.doCleanup = function() {};
\ No newline at end of file
diff --git a/lib/info.js b/lib/info.js
deleted file mode 100644
index fc5b662..0000000
--- a/lib/info.js
+++ /dev/null
@@ -1,125 +0,0 @@
-/*
- * ***** BEGIN LICENSE BLOCK *****
- * Copyright (c) 2011-2012 VMware, Inc.
- *
- * For the license see COPYING.
- * ***** END LICENSE BLOCK *****
- */
-
-var InfoReceiver = function(base_url, AjaxObject) {
-    var that = this;
-    utils.delay(function(){that.doXhr(base_url, AjaxObject);});
-};
-
-InfoReceiver.prototype = new EventEmitter(['finish']);
-
-InfoReceiver.prototype.doXhr = function(base_url, AjaxObject) {
-    var that = this;
-    var t0 = (new Date()).getTime();
-    var xo = new AjaxObject('GET', base_url + '/info');
-
-    var tref = utils.delay(8000,
-                           function(){xo.ontimeout();});
-
-    xo.onfinish = function(status, text) {
-        clearTimeout(tref);
-        tref = null;
-        if (status === 200) {
-            var rtt = (new Date()).getTime() - t0;
-            var info;
-            if (text) {
-                try {
-                    info = JSON.parse(text);
-                }
-                catch (e) {}
-            }
-            if (typeof info !== 'object') info = {};
-            that.emit('finish', info, rtt);
-        } else {
-            that.emit('finish');
-        }
-    };
-    xo.ontimeout = function() {
-        xo.close();
-        that.emit('finish');
-    };
-};
-
-var InfoReceiverIframe = function(base_url) {
-    var that = this;
-    var go = function() {
-        var ifr = new IframeTransport();
-        ifr.protocol = 'w-iframe-info-receiver';
-        var fun = function(r) {
-            if (typeof r === 'string' && r.substr(0,1) === 'm') {
-                var d = JSON.parse(r.substr(1));
-                var info = d[0], rtt = d[1];
-                that.emit('finish', info, rtt);
-            } else {
-                that.emit('finish');
-            }
-            ifr.doCleanup();
-            ifr = null;
-        };
-        var mock_ri = {
-            _options: {},
-            _didClose: fun,
-            _didMessage: fun
-        };
-        ifr.i_constructor(mock_ri, base_url, base_url);
-    }
-    if(!_document.body) {
-        utils.attachEvent('load', go);
-    } else {
-        go();
-    }
-};
-InfoReceiverIframe.prototype = new EventEmitter(['finish']);
-
-
-var InfoReceiverFake = function() {
-    // It may not be possible to do cross domain AJAX to get the info
-    // data, for example for IE7. But we want to run JSONP, so let's
-    // fake the response, with rtt=2s (rto=6s).
-    var that = this;
-    utils.delay(function() {
-        that.emit('finish', {}, 2000);
-    });
-};
-InfoReceiverFake.prototype = new EventEmitter(['finish']);
-
-var createInfoReceiver = function(base_url) {
-    if (utils.isSameOriginUrl(base_url)) {
-        // If, for some reason, we have SockJS locally - there's no
-        // need to start up the complex machinery. Just use ajax.
-        return new InfoReceiver(base_url, utils.XHRLocalObject);
-    }
-    switch (utils.isXHRCorsCapable()) {
-    case 1:
-        // XHRLocalObject -> no_credentials=true
-        return new InfoReceiver(base_url, utils.XHRLocalObject);
-    case 2:
-        // IE 8/9 if the request target uses the same scheme
-        if (utils.isSameOriginScheme(base_url)) {
-            return new InfoReceiver(base_url, utils.XDRObject);
-        }
-        break;
-    case 3:
-        // Opera
-        return new InfoReceiverIframe(base_url);
-    };
-
-    // IE 7, and IE 8/9 if requesting across schemes (e.g. http -> https)
-    return new InfoReceiverFake();
-};
-
-
-var WInfoReceiverIframe = FacadeJS['w-iframe-info-receiver'] = function(ri, _trans_url, base_url) {
-    var ir = new InfoReceiver(base_url, utils.XHRLocalObject);
-    ir.onfinish = function(info, rtt) {
-        ri._didMessage('m'+JSON.stringify([info, rtt]));
-        ri._didClose();
-    }
-};
-WInfoReceiverIframe.prototype.doCleanup = function() {};
-
diff --git a/lib/json2.min.js b/lib/json2.min.js
deleted file mode 100644
index 04e8d93..0000000
--- a/lib/json2.min.js
+++ /dev/null
@@ -1 +0,0 @@
-var JSON;JSON||(JSON={}),function(){function str(a,b){var c,d,e,f,g=gap,h,i=b[a];i&&typeof i=="object"&&typeof i.toJSON=="function"&&(i=i.toJSON(a)),typeof rep=="function"&&(i=rep.call(b,a,i));switch(typeof i){case"string":return quote(i);case"number":return isFinite(i)?String(i):"null";case"boolean":case"null":return String(i);case"object":if(!i)return"null";gap+=indent,h=[];if(Object.prototype.toString.apply(i)==="[object Array]"){f=i.length;for(c=0;c<f;c+=1)h[c]=str(c,i)||"null";e=h.l [...]
\ No newline at end of file
diff --git a/lib/reventtarget.js b/lib/reventtarget.js
index aed5f85..68f99b1 100644
--- a/lib/reventtarget.js
+++ b/lib/reventtarget.js
@@ -1,3 +1,4 @@
+'use strict';
 /*
  * ***** BEGIN LICENSE BLOCK *****
  * Copyright (c) 2011-2012 VMware, Inc.
@@ -9,6 +10,9 @@
 /* Simplified implementation of DOM2 EventTarget.
  *   http://www.w3.org/TR/DOM-Level-2-Events/events.html#Events-EventTarget
  */
+
+var utils = require('./utils');
+
 var REventTarget = function() {};
 REventTarget.prototype.addEventListener = function (eventType, listener) {
     if(!this._listeners) {
@@ -63,3 +67,5 @@ REventTarget.prototype.dispatchEvent = function (event) {
         }
     }
 };
+
+module.exports = REventTarget;
diff --git a/lib/simpleevent.js b/lib/simpleevent.js
index 47b5938..35124ae 100644
--- a/lib/simpleevent.js
+++ b/lib/simpleevent.js
@@ -1,3 +1,4 @@
+'use strict';
 /*
  * ***** BEGIN LICENSE BLOCK *****
  * Copyright (c) 2011-2012 VMware, Inc.
@@ -26,3 +27,5 @@ SimpleEvent.prototype.toString = function() {
     }
     return 'SimpleEvent(' + r.join(', ') + ')';
 };
+
+module.exports = SimpleEvent;
diff --git a/lib/sockjs.js b/lib/sockjs.js
index 12de0f7..bd14725 100644
--- a/lib/sockjs.js
+++ b/lib/sockjs.js
@@ -1,3 +1,4 @@
+'use strict';
 /*
  * ***** BEGIN LICENSE BLOCK *****
  * Copyright (c) 2011-2012 VMware, Inc.
@@ -6,12 +7,21 @@
  * ***** END LICENSE BLOCK *****
  */
 
-var SockJS = function(url, dep_protocols_whitelist, options) {
+var utils = require('./utils');
+var REventTarget = require('./reventtarget');
+var SimpleEvent = require('./SimpleEvent');
+var InfoReceiver = require('./info-receiver');
+var InfoReceiverIframe = require('./info-receiver-iframe');
+var InfoReceiverFake = require('./info-receiver-fake');
+var FacadeJS = require('./facade');
+var JSON3 = require('json3').noConflict();
+
+function SockJS(url, dep_protocols_whitelist, options) {
     if (!(this instanceof SockJS)) {
         // makes `new` optional
         return new SockJS(url, dep_protocols_whitelist, options);
     }
-    
+
     var that = this, protocols_whitelist;
     that._options = {devel: false, debug: false, protocols_whitelist: [],
                      info: undefined, rtt: undefined};
@@ -29,7 +39,7 @@ var SockJS = function(url, dep_protocols_whitelist, options) {
             dep_protocols_whitelist.length > 0) {
             protocols_whitelist = [dep_protocols_whitelist];
         } else if (utils.isArray(dep_protocols_whitelist)) {
-            protocols_whitelist = dep_protocols_whitelist
+            protocols_whitelist = dep_protocols_whitelist;
         } else {
             protocols_whitelist = null;
         }
@@ -59,7 +69,8 @@ var SockJS = function(url, dep_protocols_whitelist, options) {
             that._didClose(1002, 'Can\'t connect to server', true);
         }
     };
-};
+}
+
 // Inheritance
 SockJS.prototype = new REventTarget();
 
@@ -146,22 +157,23 @@ SockJS.prototype._didClose = function(code, reason, force) {
 SockJS.prototype._didMessage = function(data) {
     var that = this;
     var type = data.slice(0, 1);
+    var payload;
     switch(type) {
     case 'o':
         that._dispatchOpen();
         break;
     case 'a':
-        var payload = JSON.parse(data.slice(1) || '[]');
+        payload = JSON3.parse(data.slice(1) || '[]');
         for(var i=0; i < payload.length; i++){
             that._dispatchMessage(payload[i]);
         }
         break;
     case 'm':
-        var payload = JSON.parse(data.slice(1) || 'null');
+        payload = JSON3.parse(data.slice(1) || 'null');
         that._dispatchMessage(payload);
         break;
     case 'c':
-        var payload = JSON.parse(data.slice(1) || '[]');
+        payload = JSON3.parse(data.slice(1) || '[]');
         that._didClose(payload[0], payload[1]);
         break;
     case 'h':
@@ -181,6 +193,19 @@ SockJS.prototype._try_next_protocol = function(close_event) {
         that._transport_tref = null;
     }
 
+    function timeoutFunction() {
+        if (that.readyState === SockJS.CONNECTING) {
+            // I can't understand how it is possible to run
+            // this timer, when the state is CLOSED, but
+            // apparently in IE everythin is possible.
+            that._didClose(2007, "Transport timeouted");
+        }
+    }
+
+    function tryNextProtocol() {
+        that._try_next_protocol();
+    }
+
     while(1) {
         var protocol = that.protocol = that._protocols.shift();
         if (!protocol) {
@@ -190,14 +215,12 @@ SockJS.prototype._try_next_protocol = function(close_event) {
         // the `head`?
         if (SockJS[protocol] &&
             SockJS[protocol].need_body === true &&
-            (!_document.body ||
-             (typeof _document.readyState !== 'undefined'
-              && _document.readyState !== 'complete'))) {
+            (!document.body ||
+             (typeof document.readyState !== 'undefined'
+              && document.readyState !== 'complete'))) {
             that._protocols.unshift(protocol);
             that.protocol = 'waiting-for-load';
-            utils.attachEvent('load', function(){
-                that._try_next_protocol();
-            });
+            utils.attachEvent('load', tryNextProtocol);
             return true;
         }
 
@@ -207,14 +230,7 @@ SockJS.prototype._try_next_protocol = function(close_event) {
         } else {
             var roundTrips = SockJS[protocol].roundTrips || 1;
             var to = ((that._options.rto || 0) * roundTrips) || 5000;
-            that._transport_tref = utils.delay(to, function() {
-                if (that.readyState === SockJS.CONNECTING) {
-                    // I can't understand how it is possible to run
-                    // this timer, when the state is CLOSED, but
-                    // apparently in IE everythin is possible.
-                    that._didClose(2007, "Transport timeouted");
-                }
-            });
+            that._transport_tref = utils.delay(to, timeoutFunction);
 
             var connid = utils.random_string(8);
             var trans_url = that._base_url + '/' + that._server + '/' + connid;
@@ -255,7 +271,7 @@ SockJS.prototype._applyInfo = function(info, rtt, protocols_whitelist) {
     that._options.info = info;
     that._options.rtt = rtt;
     that._options.rto = utils.countRTO(rtt);
-    that._options.info.null_origin = !_document.domain;
+    that._options.info.null_origin = !document.domain;
     // Servers can override base_url, eg to provide a randomized domain name and
     // avoid browser per-domain connection limits.
     if (info.base_url)
@@ -263,3 +279,103 @@ SockJS.prototype._applyInfo = function(info, rtt, protocols_whitelist) {
     var probed = utils.probeProtocols();
     that._protocols = utils.detectProtocols(probed, protocols_whitelist, info);
 };
+
+utils.parent_origin = undefined;
+
+SockJS.bootstrap_iframe = function() {
+    var facade;
+    utils.curr_window_id = document.location.hash.slice(1);
+    var onMessage = function(e) {
+        if(e.source !== parent) return;
+        if(typeof utils.parent_origin === 'undefined')
+            utils.parent_origin = e.origin;
+        if (e.origin !== utils.parent_origin) return;
+
+        var window_id = e.data.slice(0, 8);
+        var type = e.data.slice(8, 9);
+        var data = e.data.slice(9);
+        if (window_id !== utils.curr_window_id) return;
+        switch(type) {
+        case 's':
+            var p = JSON3.parse(data);
+            var version = p[0];
+            var protocol = p[1];
+            var trans_url = p[2];
+            var base_url = p[3];
+            if (version !== SockJS.version) {
+                utils.log("Incompatibile SockJS! Main site uses:" +
+                          " \"" + version + "\", the iframe:" +
+                          " \"" + SockJS.version + "\".");
+            }
+            if (!utils.flatUrl(trans_url) || !utils.flatUrl(base_url)) {
+                utils.log("Only basic urls are supported in SockJS");
+                return;
+            }
+
+            if (!utils.isSameOriginUrl(trans_url) ||
+                !utils.isSameOriginUrl(base_url)) {
+                utils.log("Can't connect to different domain from within an " +
+                          "iframe. (" + JSON3.stringify([window.location.href, trans_url, base_url]) +
+                          ")");
+                return;
+            }
+            facade = new FacadeJS();
+            facade._transport = new FacadeJS[protocol](facade, trans_url, base_url);
+            break;
+        case 'm':
+            facade._doSend(data);
+            break;
+        case 'c':
+            if (facade)
+                facade._doCleanup();
+            facade = null;
+            break;
+        }
+    };
+
+    // alert('test ticker');
+    // facade = new FacadeJS();
+    // facade._transport = new FacadeJS['w-iframe-xhr-polling'](facade, 'http://host.com:9999/ticker/12/basd');
+
+    utils.attachMessage(onMessage);
+
+    // Start
+    utils.postMessage('s');
+};
+
+SockJS.websocket = require('./trans-websocket');
+SockJS['iframe-eventsource'] = require('./trans-iframe-eventsource');
+SockJS['iframe-htmlfile'] = require('./trans-iframe-htmlfile');
+SockJS['iframe-xhr-polling'] = require('./trans-iframe-xhr-polling');
+SockJS['jsonp-polling'] = require('./trans-jsonp-polling');
+SockJS['xdr-polling'] = require('./xdr-polling');
+SockJS['xdr-streaming'] = require('./xdr-streaming');
+SockJS['xhr-polling'] = require('./xhr-polling');
+SockJS['xhr-streaming'] = require('./xhr-streaming');
+
+module.exports = SockJS;
+
+function createInfoReceiver(base_url) {
+    if (utils.isSameOriginUrl(base_url)) {
+        // If, for some reason, we have SockJS locally - there's no
+        // need to start up the complex machinery. Just use ajax.
+        return new InfoReceiver(base_url, utils.XHRLocalObject);
+    }
+    switch (utils.isXHRCorsCapable()) {
+    case 1:
+        // XHRLocalObject -> no_credentials=true
+        return new InfoReceiver(base_url, utils.XHRLocalObject);
+    case 2:
+        // IE 8/9 if the request target uses the same scheme
+        if (utils.isSameOriginScheme(base_url)) {
+            return new InfoReceiver(base_url, utils.XDRObject);
+        }
+        break;
+    case 3:
+        // Opera
+        return new InfoReceiverIframe(base_url);
+    }
+
+    // IE 7, and IE 8/9 if requesting across schemes (e.g. http -> https)
+    return new InfoReceiverFake();
+}
diff --git a/lib/test-hooks.js b/lib/test-hooks.js
deleted file mode 100644
index 706e01b..0000000
--- a/lib/test-hooks.js
+++ /dev/null
@@ -1,16 +0,0 @@
-/*
- * ***** BEGIN LICENSE BLOCK *****
- * Copyright (c) 2011-2012 VMware, Inc.
- *
- * For the license see COPYING.
- * ***** END LICENSE BLOCK *****
- */
-
-// For testing
-SockJS.getUtils = function(){
-    return utils;
-};
-
-SockJS.getIframeTransport = function(){
-    return IframeTransport;
-};
diff --git a/lib/trans-eventsource.js b/lib/trans-eventsource.js
new file mode 100644
index 0000000..bb71161
--- /dev/null
+++ b/lib/trans-eventsource.js
@@ -0,0 +1,14 @@
+'use strict';
+
+var AjaxBasedTransport = require('./ajax-based');
+var EventSourceReceiver = require('./trans-receiver-eventsource');
+var FacadeJS = require('./facade');
+var utils = require('./utils');
+
+// w-iframe-eventsource
+var EventSourceTransport = FacadeJS['w-iframe-eventsource'] = function EventSourceTransport(ri, trans_url) {
+    this.run(ri, trans_url, '/eventsource', EventSourceReceiver, utils.XHRLocalObject);
+};
+EventSourceTransport.prototype = new AjaxBasedTransport();
+
+module.exports = EventSourceTransport;
\ No newline at end of file
diff --git a/lib/trans-iframe-eventsource.js b/lib/trans-iframe-eventsource.js
index 3eeb9dd..9fb261e 100644
--- a/lib/trans-iframe-eventsource.js
+++ b/lib/trans-iframe-eventsource.js
@@ -1,3 +1,4 @@
+'use strict';
 /*
  * ***** BEGIN LICENSE BLOCK *****
  * Copyright (c) 2011-2012 VMware, Inc.
@@ -6,24 +7,21 @@
  * ***** END LICENSE BLOCK *****
  */
 
-var EventSourceIframeTransport = SockJS['iframe-eventsource'] = function () {
+var IframeTransport = require('./trans-iframe');
+
+function EventSourceIframeTransport() {
     var that = this;
     that.protocol = 'w-iframe-eventsource';
     that.i_constructor.apply(that, arguments);
-};
+}
 
 EventSourceIframeTransport.prototype = new IframeTransport();
 
 EventSourceIframeTransport.enabled = function () {
-    return ('EventSource' in _window) && IframeTransport.enabled();
+    return ('EventSource' in window) && IframeTransport.enabled();
 };
 
 EventSourceIframeTransport.need_body = true;
 EventSourceIframeTransport.roundTrips = 3; // html, javascript, eventsource
 
-
-// w-iframe-eventsource
-var EventSourceTransport = FacadeJS['w-iframe-eventsource'] = function(ri, trans_url) {
-    this.run(ri, trans_url, '/eventsource', EventSourceReceiver, utils.XHRLocalObject);
-}
-EventSourceTransport.prototype = new AjaxBasedTransport();
+module.exports = EventSourceIframeTransport;
\ No newline at end of file
diff --git a/lib/trans-iframe-htmlfile.js b/lib/trans-iframe-htmlfile.js
index 3b1ee25..25de7af 100644
--- a/lib/trans-iframe-htmlfile.js
+++ b/lib/trans-iframe-htmlfile.js
@@ -1,3 +1,4 @@
+'use strict';
 /*
  * ***** BEGIN LICENSE BLOCK *****
  * Copyright (c) 2011-2012 VMware, Inc.
@@ -11,11 +12,17 @@
 // We may test this transport in all browsers - why not, but in
 // production it should be only run in IE.
 
-var HtmlFileIframeTransport = SockJS['iframe-htmlfile'] = function () {
+var IframeTransport = require('./trans-iframe');
+var utils = require('./utils');
+var AjaxBasedTransport = require('./ajax-based');
+var HtmlfileReceiver = require('./trans-receiver-htmlfile');
+var FacadeJS = require('./facade');
+
+function HtmlFileIframeTransport() {
     var that = this;
     that.protocol = 'w-iframe-htmlfile';
     that.i_constructor.apply(that, arguments);
-};
+}
 
 // Inheritance.
 HtmlFileIframeTransport.prototype = new IframeTransport();
@@ -27,6 +34,8 @@ HtmlFileIframeTransport.enabled = function() {
 HtmlFileIframeTransport.need_body = true;
 HtmlFileIframeTransport.roundTrips = 3; // html, javascript, htmlfile
 
+module.exports = HtmlFileIframeTransport;
+
 
 // w-iframe-htmlfile
 var HtmlFileTransport = FacadeJS['w-iframe-htmlfile'] = function(ri, trans_url) {
diff --git a/lib/trans-iframe-within.js b/lib/trans-iframe-within.js
deleted file mode 100644
index 9a642cf..0000000
--- a/lib/trans-iframe-within.js
+++ /dev/null
@@ -1,94 +0,0 @@
-/*
- * ***** BEGIN LICENSE BLOCK *****
- * Copyright (c) 2011-2012 VMware, Inc.
- *
- * For the license see COPYING.
- * ***** END LICENSE BLOCK *****
- */
-
-var curr_window_id;
-
-var postMessage = function (type, data) {
-    if(parent !== _window) {
-        parent.postMessage(curr_window_id + type + (data || ''), '*');
-    } else {
-        utils.log("Can't postMessage, no parent window.", type, data);
-    }
-};
-
-var FacadeJS = function() {};
-FacadeJS.prototype._didClose = function (code, reason) {
-    postMessage('t', utils.closeFrame(code, reason));
-};
-FacadeJS.prototype._didMessage = function (frame) {
-    postMessage('t', frame);
-};
-FacadeJS.prototype._doSend = function (data) {
-    this._transport.doSend(data);
-};
-FacadeJS.prototype._doCleanup = function () {
-    this._transport.doCleanup();
-};
-
-utils.parent_origin = undefined;
-
-SockJS.bootstrap_iframe = function() {
-    var facade;
-    curr_window_id = _document.location.hash.slice(1);
-    var onMessage = function(e) {
-        if(e.source !== parent) return;
-        if(typeof utils.parent_origin === 'undefined')
-            utils.parent_origin = e.origin;
-        if (e.origin !== utils.parent_origin) return;
-
-        var window_id = e.data.slice(0, 8);
-        var type = e.data.slice(8, 9);
-        var data = e.data.slice(9);
-        if (window_id !== curr_window_id) return;
-        switch(type) {
-        case 's':
-            var p = JSON.parse(data);
-            var version = p[0];
-            var protocol = p[1];
-            var trans_url = p[2];
-            var base_url = p[3];
-            if (version !== SockJS.version) {
-                utils.log("Incompatibile SockJS! Main site uses:" +
-                          " \"" + version + "\", the iframe:" +
-                          " \"" + SockJS.version + "\".");
-            }
-            if (!utils.flatUrl(trans_url) || !utils.flatUrl(base_url)) {
-                utils.log("Only basic urls are supported in SockJS");
-                return;
-            }
-
-            if (!utils.isSameOriginUrl(trans_url) ||
-                !utils.isSameOriginUrl(base_url)) {
-                utils.log("Can't connect to different domain from within an " +
-                          "iframe. (" + JSON.stringify([_window.location.href, trans_url, base_url]) +
-                          ")");
-                return;
-            }
-            facade = new FacadeJS();
-            facade._transport = new FacadeJS[protocol](facade, trans_url, base_url);
-            break;
-        case 'm':
-            facade._doSend(data);
-            break;
-        case 'c':
-            if (facade)
-                facade._doCleanup();
-            facade = null;
-            break;
-        }
-    };
-
-    // alert('test ticker');
-    // facade = new FacadeJS();
-    // facade._transport = new FacadeJS['w-iframe-xhr-polling'](facade, 'http://host.com:9999/ticker/12/basd');
-
-    utils.attachMessage(onMessage);
-
-    // Start
-    postMessage('s');
-};
diff --git a/lib/trans-iframe-xhr-polling.js b/lib/trans-iframe-xhr-polling.js
index eadace1..969832a 100644
--- a/lib/trans-iframe-xhr-polling.js
+++ b/lib/trans-iframe-xhr-polling.js
@@ -1,3 +1,4 @@
+'use strict';
 /*
  * ***** BEGIN LICENSE BLOCK *****
  * Copyright (c) 2011-2012 VMware, Inc.
@@ -6,21 +7,28 @@
  * ***** END LICENSE BLOCK *****
  */
 
-var XhrPollingIframeTransport = SockJS['iframe-xhr-polling'] = function () {
+var IframeTransport = require('./trans-iframe');
+var utils = require('./utils');
+var AjaxBasedTransport = require('./ajax-based');
+var XhrReceiver = require('./trans-receiver-xhr');
+var FacadeJS = require('./facade');
+
+function XhrPollingIframeTransport() {
     var that = this;
     that.protocol = 'w-iframe-xhr-polling';
     that.i_constructor.apply(that, arguments);
-};
+}
 
 XhrPollingIframeTransport.prototype = new IframeTransport();
 
 XhrPollingIframeTransport.enabled = function () {
-    return _window.XMLHttpRequest && IframeTransport.enabled();
+    return window.XMLHttpRequest && IframeTransport.enabled();
 };
 
 XhrPollingIframeTransport.need_body = true;
 XhrPollingIframeTransport.roundTrips = 3; // html, javascript, xhr
 
+module.exports = XhrPollingIframeTransport;
 
 // w-iframe-xhr-polling
 var XhrPollingITransport = FacadeJS['w-iframe-xhr-polling'] = function(ri, trans_url) {
diff --git a/lib/trans-iframe.js b/lib/trans-iframe.js
index ec1fd09..8063994 100644
--- a/lib/trans-iframe.js
+++ b/lib/trans-iframe.js
@@ -1,3 +1,4 @@
+'use strict';
 /*
  * ***** BEGIN LICENSE BLOCK *****
  * Copyright (c) 2011-2012 VMware, Inc.
@@ -14,7 +15,10 @@
 //    http://msdn.microsoft.com/en-us/library/cc197015(v=VS.85).aspx
 //    http://stevesouders.com/misc/test-postmessage.php
 
-var IframeTransport = function() {};
+var JSON3 = require('json3').noConflict();
+var utils = require('./utils');
+
+function IframeTransport() {}
 
 IframeTransport.prototype.i_constructor = function(ri, trans_url, base_url) {
     var that = this;
@@ -25,7 +29,7 @@ IframeTransport.prototype.i_constructor = function(ri, trans_url, base_url) {
 
     var iframe_url = base_url + '/iframe.html';
     if (that.ri._options.devel) {
-        iframe_url += '?t=' + (+new Date);
+        iframe_url += '?t=' + (+new Date());
     }
     that.window_id = utils.random_string(8);
     iframe_url += '#' + that.window_id;
@@ -65,7 +69,7 @@ IframeTransport.prototype.onmessage = function(e) {
     switch(type) {
     case 's':
         that.iframeObj.loaded();
-        that.postMessage('s', JSON.stringify([SockJS.version, that.protocol, that.trans_url, that.base_url]));
+        that.postMessage('s', JSON3.stringify([window.SockJS.version, that.protocol, that.trans_url, that.base_url]));
         break;
     case 't':
         that.ri._didMessage(data);
@@ -86,6 +90,8 @@ IframeTransport.enabled = function() {
     // postMessage misbehaves in konqueror 4.6.5 - the messages are delivered with
     // huge delay, or not at all.
     var konqueror = navigator && navigator.userAgent && navigator.userAgent.indexOf('Konqueror') !== -1;
-    return ((typeof _window.postMessage === 'function' ||
-            typeof _window.postMessage === 'object') && (!konqueror));
+    return ((typeof window.postMessage === 'function' ||
+            typeof window.postMessage === 'object') && (!konqueror));
 };
+
+module.exports = IframeTransport;
diff --git a/lib/trans-jsonp-polling.js b/lib/trans-jsonp-polling.js
index bfb37b2..4dfb425 100644
--- a/lib/trans-jsonp-polling.js
+++ b/lib/trans-jsonp-polling.js
@@ -1,3 +1,4 @@
+'use strict';
 /*
  * ***** BEGIN LICENSE BLOCK *****
  * Copyright (c) 2011-2012 VMware, Inc.
@@ -14,15 +15,17 @@
 //   o you will get a spinning cursor
 //   o for Konqueror a dumb timer is needed to detect errors
 
+var utils = require('./utils');
+var BufferedSender = require('./buffered-sender');
 
-var JsonPTransport = SockJS['jsonp-polling'] = function(ri, trans_url) {
+function JsonPTransport(ri, trans_url) {
     utils.polluteGlobalNamespace();
     var that = this;
     that.ri = ri;
     that.trans_url = trans_url;
     that.send_constructor(jsonPGenericSender);
     that._schedule_recv();
-};
+}
 
 // Inheritnace
 JsonPTransport.prototype = new BufferedSender();
@@ -67,7 +70,7 @@ JsonPTransport.prototype.doCleanup = function() {
 // Abstract away code that handles global namespace pollution.
 var jsonPReceiverWrapper = function(url, constructReceiver, user_callback) {
     var id = 'a' + utils.random_string(6);
-    var url_id = url + '?c=' + escape(WPrefix + '.' + id);
+    var url_id = url + '?c=' + encodeURIComponent(utils.WPrefix + '.' + id);
 
     // Unfortunately it is not possible to abort loading of the
     // script. We need to keep track of frake close frames.
@@ -78,7 +81,7 @@ var jsonPReceiverWrapper = function(url, constructReceiver, user_callback) {
         switch(aborting) {
         case 0:
             // Normal behaviour - delete hook _and_ emit message.
-            delete _window[WPrefix][id];
+            delete window[utils.WPrefix][id];
             user_callback(frame);
             break;
         case 1:
@@ -88,18 +91,187 @@ var jsonPReceiverWrapper = function(url, constructReceiver, user_callback) {
             break;
         case 2:
             // Got frame after connection was closed, delete hook, don't emit.
-            delete _window[WPrefix][id];
+            delete window[utils.WPrefix][id];
             break;
         }
     };
 
     var close_script = constructReceiver(url_id, callback);
-    _window[WPrefix][id] = close_script;
+    window[utils.WPrefix][id] = close_script;
     var stop = function() {
-        if (_window[WPrefix][id]) {
+        if (window[utils.WPrefix][id]) {
             aborting = 1;
-            _window[WPrefix][id](utils.closeFrame(1000, "JSONP user aborted read"));
+            window[utils.WPrefix][id](utils.closeFrame(1000, "JSONP user aborted read"));
         }
     };
     return stop;
 };
+
+function jsonPGenericSender(url, payload, callback) {
+    var form = window._send_form;
+    var area = window._send_area;
+
+    if (!form) {
+        form = window._send_form = document.createElement('form');
+        area = window._send_area = document.createElement('textarea');
+        area.name = 'd';
+        form.style.display = 'none';
+        form.style.position = 'absolute';
+        form.method = 'POST';
+        form.enctype = 'application/x-www-form-urlencoded';
+        form.acceptCharset = "UTF-8";
+        form.appendChild(area);
+        document.body.appendChild(form);
+    }
+    var id = 'a' + utils.random_string(8);
+    form.target = id;
+    form.action = url + '/jsonp_send?i=' + id;
+
+    var iframe;
+    try {
+        // ie6 dynamic iframes with target="" support (thanks Chris Lambacher)
+        iframe = document.createElement('<iframe name="'+ id +'">');
+    } catch(x) {
+        iframe = document.createElement('iframe');
+        iframe.name = id;
+    }
+    iframe.id = id;
+    form.appendChild(iframe);
+    iframe.style.display = 'none';
+
+    try {
+        area.value = payload;
+    } catch(e) {
+        utils.log('Your browser is seriously broken. Go home! ' + e.message);
+    }
+    form.submit();
+
+    var completed = function(e) {
+        if (!iframe.onerror) return;
+        iframe.onreadystatechange = iframe.onerror = iframe.onload = null;
+        // Opera mini doesn't like if we GC iframe
+        // immediately, thus this timeout.
+        utils.delay(500, function() {
+                       iframe.parentNode.removeChild(iframe);
+                       iframe = null;
+                   });
+        area.value = '';
+        // It is not possible to detect if the iframe succeeded or
+        // failed to submit our form.
+        callback(true);
+    };
+    iframe.onerror = iframe.onload = completed;
+    iframe.onreadystatechange = function(e) {
+        if (iframe.readyState == 'complete') completed();
+    };
+    return completed;
+}
+
+// Parts derived from Socket.io:
+//    https://github.com/LearnBoost/socket.io/blob/0.6.17/lib/socket.io/transports/jsonp-polling.js
+// and jQuery-JSONP:
+//    https://code.google.com/p/jquery-jsonp/source/browse/trunk/core/jquery.jsonp.js
+function jsonPGenericReceiver(url, callback) {
+    var tref;
+    var script = document.createElement('script');
+    var script2;  // Opera synchronous load trick.
+    var close_script = function(frame) {
+        if (script2) {
+            script2.parentNode.removeChild(script2);
+            script2 = null;
+        }
+        if (script) {
+            clearTimeout(tref);
+            // Unfortunately, you can't really abort script loading of
+            // the script.
+            script.parentNode.removeChild(script);
+            script.onreadystatechange = script.onerror =
+                script.onload = script.onclick = null;
+            script = null;
+            callback(frame);
+            callback = null;
+        }
+    };
+
+    // IE9 fires 'error' event after orsc or before, in random order.
+    var loaded_okay = false;
+    var error_timer = null;
+
+    script.id = 'a' + utils.random_string(8);
+    script.src = url;
+    script.type = 'text/javascript';
+    script.charset = 'UTF-8';
+    script.onerror = function(e) {
+        if (!error_timer) {
+            // Delay firing close_script.
+            error_timer = setTimeout(function() {
+                if (!loaded_okay) {
+                    close_script(utils.closeFrame(
+                        1006,
+                        "JSONP script loaded abnormally (onerror)"));
+                }
+            }, 1000);
+        }
+    };
+    script.onload = function(e) {
+        close_script(utils.closeFrame(1006, "JSONP script loaded abnormally (onload)"));
+    };
+
+    script.onreadystatechange = function(e) {
+        if (/loaded|closed/.test(script.readyState)) {
+            if (script && script.htmlFor && script.onclick) {
+                loaded_okay = true;
+                try {
+                    // In IE, actually execute the script.
+                    script.onclick();
+                } catch (x) {}
+            }
+            if (script) {
+                close_script(utils.closeFrame(1006, "JSONP script loaded abnormally (onreadystatechange)"));
+            }
+        }
+    };
+    // IE: event/htmlFor/onclick trick.
+    // One can't rely on proper order for onreadystatechange. In order to
+    // make sure, set a 'htmlFor' and 'event' properties, so that
+    // script code will be installed as 'onclick' handler for the
+    // script object. Later, onreadystatechange, manually execute this
+    // code. FF and Chrome doesn't work with 'event' and 'htmlFor'
+    // set. For reference see:
+    //   http://jaubourg.net/2010/07/loading-script-as-onclick-handler-of.html
+    // Also, read on that about script ordering:
+    //   http://wiki.whatwg.org/wiki/Dynamic_Script_Execution_Order
+    if (typeof script.async === 'undefined' && document.attachEvent) {
+        // According to mozilla docs, in recent browsers script.async defaults
+        // to 'true', so we may use it to detect a good browser:
+        // https://developer.mozilla.org/en/HTML/Element/script
+        if (!/opera/i.test(navigator.userAgent)) {
+            // Naively assume we're in IE
+            try {
+                script.htmlFor = script.id;
+                script.event = "onclick";
+            } catch (x) {}
+            script.async = true;
+        } else {
+            // Opera, second sync script hack
+            script2 = document.createElement('script');
+            script2.text = "try{var a = document.getElementById('"+script.id+"'); if(a)a.onerror();}catch(x){};";
+            script.async = script2.async = false;
+        }
+    }
+    if (typeof script.async !== 'undefined') {
+        script.async = true;
+    }
+
+    // Fallback mostly for Konqueror - stupid timer, 35 seconds shall be plenty.
+    tref = setTimeout(function() {
+                          close_script(utils.closeFrame(1006, "JSONP script loaded abnormally (timeout)"));
+                      }, 35000);
+
+    var head = document.getElementsByTagName('head')[0];
+    head.insertBefore(script, head.firstChild);
+    if (script2) {
+        head.insertBefore(script2, head.firstChild);
+    }
+    return close_script;
+}
\ No newline at end of file
diff --git a/lib/trans-jsonp-receiver.js b/lib/trans-jsonp-receiver.js
deleted file mode 100644
index 3e26998..0000000
--- a/lib/trans-jsonp-receiver.js
+++ /dev/null
@@ -1,116 +0,0 @@
-/*
- * ***** BEGIN LICENSE BLOCK *****
- * Copyright (c) 2011-2012 VMware, Inc.
- *
- * For the license see COPYING.
- * ***** END LICENSE BLOCK *****
- */
-
-// Parts derived from Socket.io:
-//    https://github.com/LearnBoost/socket.io/blob/0.6.17/lib/socket.io/transports/jsonp-polling.js
-// and jQuery-JSONP:
-//    https://code.google.com/p/jquery-jsonp/source/browse/trunk/core/jquery.jsonp.js
-var jsonPGenericReceiver = function(url, callback) {
-    var tref;
-    var script = _document.createElement('script');
-    var script2;  // Opera synchronous load trick.
-    var close_script = function(frame) {
-        if (script2) {
-            script2.parentNode.removeChild(script2);
-            script2 = null;
-        }
-        if (script) {
-            clearTimeout(tref);
-            // Unfortunately, you can't really abort script loading of
-            // the script.
-            script.parentNode.removeChild(script);
-            script.onreadystatechange = script.onerror =
-                script.onload = script.onclick = null;
-            script = null;
-            callback(frame);
-            callback = null;
-        }
-    };
-
-    // IE9 fires 'error' event after orsc or before, in random order.
-    var loaded_okay = false;
-    var error_timer = null;
-
-    script.id = 'a' + utils.random_string(8);
-    script.src = url;
-    script.type = 'text/javascript';
-    script.charset = 'UTF-8';
-    script.onerror = function(e) {
-        if (!error_timer) {
-            // Delay firing close_script.
-            error_timer = setTimeout(function() {
-                if (!loaded_okay) {
-                    close_script(utils.closeFrame(
-                        1006,
-                        "JSONP script loaded abnormally (onerror)"));
-                }
-            }, 1000);
-        }
-    };
-    script.onload = function(e) {
-        close_script(utils.closeFrame(1006, "JSONP script loaded abnormally (onload)"));
-    };
-
-    script.onreadystatechange = function(e) {
-        if (/loaded|closed/.test(script.readyState)) {
-            if (script && script.htmlFor && script.onclick) {
-                loaded_okay = true;
-                try {
-                    // In IE, actually execute the script.
-                    script.onclick();
-                } catch (x) {}
-            }
-            if (script) {
-                close_script(utils.closeFrame(1006, "JSONP script loaded abnormally (onreadystatechange)"));
-            }
-        }
-    };
-    // IE: event/htmlFor/onclick trick.
-    // One can't rely on proper order for onreadystatechange. In order to
-    // make sure, set a 'htmlFor' and 'event' properties, so that
-    // script code will be installed as 'onclick' handler for the
-    // script object. Later, onreadystatechange, manually execute this
-    // code. FF and Chrome doesn't work with 'event' and 'htmlFor'
-    // set. For reference see:
-    //   http://jaubourg.net/2010/07/loading-script-as-onclick-handler-of.html
-    // Also, read on that about script ordering:
-    //   http://wiki.whatwg.org/wiki/Dynamic_Script_Execution_Order
-    if (typeof script.async === 'undefined' && _document.attachEvent) {
-        // According to mozilla docs, in recent browsers script.async defaults
-        // to 'true', so we may use it to detect a good browser:
-        // https://developer.mozilla.org/en/HTML/Element/script
-        if (!/opera/i.test(navigator.userAgent)) {
-            // Naively assume we're in IE
-            try {
-                script.htmlFor = script.id;
-                script.event = "onclick";
-            } catch (x) {}
-            script.async = true;
-        } else {
-            // Opera, second sync script hack
-            script2 = _document.createElement('script');
-            script2.text = "try{var a = document.getElementById('"+script.id+"'); if(a)a.onerror();}catch(x){};";
-            script.async = script2.async = false;
-        }
-    }
-    if (typeof script.async !== 'undefined') {
-        script.async = true;
-    }
-
-    // Fallback mostly for Konqueror - stupid timer, 35 seconds shall be plenty.
-    tref = setTimeout(function() {
-                          close_script(utils.closeFrame(1006, "JSONP script loaded abnormally (timeout)"));
-                      }, 35000);
-
-    var head = _document.getElementsByTagName('head')[0];
-    head.insertBefore(script, head.firstChild);
-    if (script2) {
-        head.insertBefore(script2, head.firstChild);
-    }
-    return close_script;
-};
diff --git a/lib/trans-polling.js b/lib/trans-polling.js
index 24cb95f..ea183b2 100644
--- a/lib/trans-polling.js
+++ b/lib/trans-polling.js
@@ -1,3 +1,4 @@
+'use strict';
 /*
  * ***** BEGIN LICENSE BLOCK *****
  * Copyright (c) 2011-2012 VMware, Inc.
@@ -6,14 +7,14 @@
  * ***** END LICENSE BLOCK *****
  */
 
-var Polling = function(ri, Receiver, recv_url, AjaxObject) {
+function Polling(ri, Receiver, recv_url, AjaxObject) {
     var that = this;
     that.ri = ri;
     that.Receiver = Receiver;
     that.recv_url = recv_url;
     that.AjaxObject = AjaxObject;
     that._scheduleRecv();
-};
+}
 
 Polling.prototype._scheduleRecv = function() {
     var that = this;
@@ -42,3 +43,5 @@ Polling.prototype.abort = function() {
         that.poll.abort();
     }
 };
+
+module.exports = Polling;
\ No newline at end of file
diff --git a/lib/trans-receiver-eventsource.js b/lib/trans-receiver-eventsource.js
index 9edbdd2..eee45c9 100644
--- a/lib/trans-receiver-eventsource.js
+++ b/lib/trans-receiver-eventsource.js
@@ -1,3 +1,4 @@
+'use strict';
 /*
  * ***** BEGIN LICENSE BLOCK *****
  * Copyright (c) 2011-2012 VMware, Inc.
@@ -6,12 +7,16 @@
  * ***** END LICENSE BLOCK *****
  */
 
-var EventSourceReceiver = function(url) {
+var SimpleEvent = require('./simpleevent');
+var REventTarget = require('./reventtarget');
+var utils = require('./utils');
+
+function EventSourceReceiver(url) {
     var that = this;
     var es = new EventSource(url);
     es.onmessage = function(e) {
         that.dispatchEvent(new SimpleEvent('message',
-                                           {'data': unescape(e.data)}));
+                                           {'data': decodeURI(e.data)}));
     };
     that.es_close = es.onerror = function(e, abort_reason) {
         // ES on reconnection has readyState = 0 or 1.
@@ -29,7 +34,7 @@ var EventSourceReceiver = function(url) {
                         that.dispatchEvent(new SimpleEvent('close', {reason: reason}));
                     });
     };
-};
+}
 
 EventSourceReceiver.prototype = new REventTarget();
 
@@ -39,3 +44,5 @@ EventSourceReceiver.prototype.abort = function() {
         that.es_close({}, true);
     }
 };
+
+module.exports = EventSourceReceiver;
diff --git a/lib/trans-receiver-htmlfile.js b/lib/trans-receiver-htmlfile.js
index e2e3dd3..54270e2 100644
--- a/lib/trans-receiver-htmlfile.js
+++ b/lib/trans-receiver-htmlfile.js
@@ -1,3 +1,4 @@
+'use strict';
 /*
  * ***** BEGIN LICENSE BLOCK *****
  * Copyright (c) 2011-2012 VMware, Inc.
@@ -6,10 +7,14 @@
  * ***** END LICENSE BLOCK *****
  */
 
+var utils = require('./utils');
+var SimpleEvent = require('./simpleevent');
+var REventTarget = require('./reventtarget');
+
 var _is_ie_htmlfile_capable;
 var isIeHtmlfileCapable = function() {
     if (_is_ie_htmlfile_capable === undefined) {
-        if ('ActiveXObject' in _window) {
+        if ('ActiveXObject' in window) {
             try {
                 _is_ie_htmlfile_capable = !!new ActiveXObject('htmlfile');
             } catch (x) {}
@@ -21,19 +26,19 @@ var isIeHtmlfileCapable = function() {
 };
 
 
-var HtmlfileReceiver = function(url) {
+function HtmlfileReceiver(url) {
     var that = this;
     utils.polluteGlobalNamespace();
 
     that.id = 'a' + utils.random_string(6);
     url += ((url.indexOf('?') === -1) ? '?' : '&') +
-        'c=' + escape(WPrefix + '.' + that.id);
+        'c=' + decodeURIComponent(utils.WPrefix + '.' + that.id);
 
     var constructor = isIeHtmlfileCapable() ?
         utils.createHtmlfile : utils.createIframe;
 
     var iframeObj;
-    _window[WPrefix][that.id] = {
+    window[utils.WPrefix][that.id] = {
         start: function () {
             iframeObj.loaded();
         },
@@ -47,13 +52,13 @@ var HtmlfileReceiver = function(url) {
     that.iframe_close = function(e, abort_reason) {
         iframeObj.cleanup();
         that.iframe_close = iframeObj = null;
-        delete _window[WPrefix][that.id];
+        delete window[utils.WPrefix][that.id];
         that.dispatchEvent(new SimpleEvent('close', {reason: abort_reason}));
     };
     iframeObj = constructor(url, function(e) {
                                 that.iframe_close({}, 'permanent');
                             });
-};
+}
 
 HtmlfileReceiver.prototype = new REventTarget();
 
@@ -63,3 +68,5 @@ HtmlfileReceiver.prototype.abort = function() {
         that.iframe_close({}, 'user');
     }
 };
+
+module.exports = HtmlfileReceiver;
diff --git a/lib/trans-receiver-xhr.js b/lib/trans-receiver-xhr.js
index d114ebc..9343ec5 100644
--- a/lib/trans-receiver-xhr.js
+++ b/lib/trans-receiver-xhr.js
@@ -1,3 +1,4 @@
+'use strict';
 /*
  * ***** BEGIN LICENSE BLOCK *****
  * Copyright (c) 2011-2012 VMware, Inc.
@@ -6,7 +7,10 @@
  * ***** END LICENSE BLOCK *****
  */
 
-var XhrReceiver = function(url, AjaxObject) {
+var SimpleEvent = require('./simpleevent');
+var REventTarget = require('./reventtarget');
+
+function XhrReceiver(url, AjaxObject) {
     var that = this;
     var buf_pos = 0;
 
@@ -27,8 +31,8 @@ var XhrReceiver = function(url, AjaxObject) {
         that.xo = null;
         var reason = status === 200 ? 'network' : 'permanent';
         that.dispatchEvent(new SimpleEvent('close', {reason: reason}));
-    }
-};
+    };
+}
 
 XhrReceiver.prototype = new REventTarget();
 
@@ -40,3 +44,5 @@ XhrReceiver.prototype.abort = function() {
         that.xo = null;
     }
 };
+
+module.exports = XhrReceiver;
\ No newline at end of file
diff --git a/lib/trans-sender.js b/lib/trans-sender.js
deleted file mode 100644
index 22762af..0000000
--- a/lib/trans-sender.js
+++ /dev/null
@@ -1,142 +0,0 @@
-/*
- * ***** BEGIN LICENSE BLOCK *****
- * Copyright (c) 2011-2012 VMware, Inc.
- *
- * For the license see COPYING.
- * ***** END LICENSE BLOCK *****
- */
-
-var BufferedSender = function() {};
-BufferedSender.prototype.send_constructor = function(sender) {
-    var that = this;
-    that.send_buffer = [];
-    that.sender = sender;
-};
-BufferedSender.prototype.doSend = function(message) {
-    var that = this;
-    that.send_buffer.push(message);
-    if (!that.send_stop) {
-        that.send_schedule();
-    }
-};
-
-// For polling transports in a situation when in the message callback,
-// new message is being send. If the sending connection was started
-// before receiving one, it is possible to saturate the network and
-// timeout due to the lack of receiving socket. To avoid that we delay
-// sending messages by some small time, in order to let receiving
-// connection be started beforehand. This is only a halfmeasure and
-// does not fix the big problem, but it does make the tests go more
-// stable on slow networks.
-BufferedSender.prototype.send_schedule_wait = function() {
-    var that = this;
-    var tref;
-    that.send_stop = function() {
-        that.send_stop = null;
-        clearTimeout(tref);
-    };
-    tref = utils.delay(25, function() {
-        that.send_stop = null;
-        that.send_schedule();
-    });
-};
-
-BufferedSender.prototype.send_schedule = function() {
-    var that = this;
-    if (that.send_buffer.length > 0) {
-        var payload = '[' + that.send_buffer.join(',') + ']';
-        that.send_stop = that.sender(that.trans_url, payload, function(success, abort_reason) {
-            that.send_stop = null;
-            if (success === false) {
-                that.ri._didClose(1006, 'Sending error ' + abort_reason);
-            } else {
-                that.send_schedule_wait();
-            }
-        });
-        that.send_buffer = [];
-    }
-};
-
-BufferedSender.prototype.send_destructor = function() {
-    var that = this;
-    if (that._send_stop) {
-        that._send_stop();
-    }
-    that._send_stop = null;
-};
-
-var jsonPGenericSender = function(url, payload, callback) {
-    var that = this;
-
-    if (!('_send_form' in that)) {
-        var form = that._send_form = _document.createElement('form');
-        var area = that._send_area = _document.createElement('textarea');
-        area.name = 'd';
-        form.style.display = 'none';
-        form.style.position = 'absolute';
-        form.method = 'POST';
-        form.enctype = 'application/x-www-form-urlencoded';
-        form.acceptCharset = "UTF-8";
-        form.appendChild(area);
-        _document.body.appendChild(form);
-    }
-    var form = that._send_form;
-    var area = that._send_area;
-    var id = 'a' + utils.random_string(8);
-    form.target = id;
-    form.action = url + '/jsonp_send?i=' + id;
-
-    var iframe;
-    try {
-        // ie6 dynamic iframes with target="" support (thanks Chris Lambacher)
-        iframe = _document.createElement('<iframe name="'+ id +'">');
-    } catch(x) {
-        iframe = _document.createElement('iframe');
-        iframe.name = id;
-    }
-    iframe.id = id;
-    form.appendChild(iframe);
-    iframe.style.display = 'none';
-
-    try {
-        area.value = payload;
-    } catch(e) {
-        utils.log('Your browser is seriously broken. Go home! ' + e.message);
-    }
-    form.submit();
-
-    var completed = function(e) {
-        if (!iframe.onerror) return;
-        iframe.onreadystatechange = iframe.onerror = iframe.onload = null;
-        // Opera mini doesn't like if we GC iframe
-        // immediately, thus this timeout.
-        utils.delay(500, function() {
-                       iframe.parentNode.removeChild(iframe);
-                       iframe = null;
-                   });
-        area.value = '';
-        // It is not possible to detect if the iframe succeeded or
-        // failed to submit our form.
-        callback(true);
-    };
-    iframe.onerror = iframe.onload = completed;
-    iframe.onreadystatechange = function(e) {
-        if (iframe.readyState == 'complete') completed();
-    };
-    return completed;
-};
-
-var createAjaxSender = function(AjaxObject) {
-    return function(url, payload, callback) {
-        var opt = {};
-        if (typeof payload === 'string') opt.headers = {'Content-type':'text/plain'};
-        var xo = new AjaxObject('POST', url + '/xhr_send', payload, opt);
-        xo.onfinish = function(status, text) {
-            callback(status === 200 || status === 204,
-                     'http status ' + status);
-        };
-        return function(abort_reason) {
-            callback(false, abort_reason);
-        };
-    };
-};
diff --git a/lib/trans-websocket.js b/lib/trans-websocket.js
index 7f6362a..9805760 100644
--- a/lib/trans-websocket.js
+++ b/lib/trans-websocket.js
@@ -1,3 +1,4 @@
+'use strict';
 /*
  * ***** BEGIN LICENSE BLOCK *****
  * Copyright (c) 2011-2012 VMware, Inc.
@@ -5,8 +6,9 @@
  * For the license see COPYING.
  * ***** END LICENSE BLOCK *****
  */
+var utils = require('./utils');
 
-var WebSocketTransport = SockJS.websocket = function(ri, trans_url) {
+function WebSocketTransport(ri, trans_url) {
     var that = this;
     var url = trans_url + '/websocket';
     if (url.slice(0, 5) === 'https') {
@@ -16,7 +18,7 @@ var WebSocketTransport = SockJS.websocket = function(ri, trans_url) {
     }
     that.ri = ri;
     that.url = url;
-    var Constructor = _window.WebSocket || _window.MozWebSocket;
+    var Constructor = window.WebSocket || window.MozWebSocket;
 
     that.ws = new Constructor(that.url);
     that.ws.onmessage = function(e) {
@@ -28,11 +30,13 @@ var WebSocketTransport = SockJS.websocket = function(ri, trans_url) {
     // let's not open the ws connection at all. See:
     // https://github.com/sockjs/sockjs-client/issues/28
     // https://bugzilla.mozilla.org/show_bug.cgi?id=696085
-    that.unload_ref = utils.unload_add(function(){that.ws.close()});
+    that.unload_ref = utils.unload_add(function(){
+        that.ws.close();
+    });
     that.ws.onclose = function() {
         that.ri._didMessage(utils.closeFrame(1006, "WebSocket connection broken"));
     };
-};
+}
 
 WebSocketTransport.prototype.doSend = function(data) {
     this.ws.send('[' + data + ']');
@@ -50,7 +54,7 @@ WebSocketTransport.prototype.doCleanup = function() {
 };
 
 WebSocketTransport.enabled = function() {
-    return !!(_window.WebSocket || _window.MozWebSocket);
+    return !!(window.WebSocket || window.MozWebSocket);
 };
 
 // In theory, ws should require 1 round trip. But in chrome, this is
@@ -58,3 +62,5 @@ WebSocketTransport.enabled = function() {
 // separate SSL connection, in which case 2 round trips are an
 // absolute minumum.
 WebSocketTransport.roundTrips = 2;
+
+module.exports = WebSocketTransport;
diff --git a/lib/trans-xhr.js b/lib/trans-xhr.js
deleted file mode 100644
index 417a9c9..0000000
--- a/lib/trans-xhr.js
+++ /dev/null
@@ -1,94 +0,0 @@
-/*
- * ***** BEGIN LICENSE BLOCK *****
- * Copyright (c) 2011-2012 VMware, Inc.
- *
- * For the license see COPYING.
- * ***** END LICENSE BLOCK *****
- */
-
-var AjaxBasedTransport = function() {};
-AjaxBasedTransport.prototype = new BufferedSender();
-
-AjaxBasedTransport.prototype.run = function(ri, trans_url,
-                                            url_suffix, Receiver, AjaxObject) {
-    var that = this;
-    that.ri = ri;
-    that.trans_url = trans_url;
-    that.send_constructor(createAjaxSender(AjaxObject));
-    that.poll = new Polling(ri, Receiver,
-                            trans_url + url_suffix, AjaxObject);
-};
-
-AjaxBasedTransport.prototype.doCleanup = function() {
-    var that = this;
-    if (that.poll) {
-        that.poll.abort();
-        that.poll = null;
-    }
-};
-
-// xhr-streaming
-var XhrStreamingTransport = SockJS['xhr-streaming'] = function(ri, trans_url) {
-    this.run(ri, trans_url, '/xhr_streaming', XhrReceiver, utils.XHRCorsObject);
-};
-
-XhrStreamingTransport.prototype = new AjaxBasedTransport();
-
-XhrStreamingTransport.enabled = function() {
-    // Support for CORS Ajax aka Ajax2? Opera 12 claims CORS but
-    // doesn't do streaming.
-    try {
-        return (_window.XMLHttpRequest &&
-                'withCredentials' in new XMLHttpRequest() &&
-                (!/opera/i.test(navigator.userAgent)));                                        
-    }
-    catch (ignored) {
-        return false;
-    }
-};
-XhrStreamingTransport.roundTrips = 2; // preflight, ajax
-
-// Safari gets confused when a streaming ajax request is started
-// before onload. This causes the load indicator to spin indefinetely.
-XhrStreamingTransport.need_body = true;
-
-
-// According to:
-//   http://stackoverflow.com/questions/1641507/detect-browser-support-for-cross-domain-xmlhttprequests
-//   http://hacks.mozilla.org/2009/07/cross-site-xmlhttprequest-with-cors/
-
-
-// xdr-streaming
-var XdrStreamingTransport = SockJS['xdr-streaming'] = function(ri, trans_url) {
-    this.run(ri, trans_url, '/xhr_streaming', XhrReceiver, utils.XDRObject);
-};
-
-XdrStreamingTransport.prototype = new AjaxBasedTransport();
-
-XdrStreamingTransport.enabled = function() {
-    return !!_window.XDomainRequest;
-};
-XdrStreamingTransport.roundTrips = 2; // preflight, ajax
-
-
-
-// xhr-polling
-var XhrPollingTransport = SockJS['xhr-polling'] = function(ri, trans_url) {
-    this.run(ri, trans_url, '/xhr', XhrReceiver, utils.XHRCorsObject);
-};
-
-XhrPollingTransport.prototype = new AjaxBasedTransport();
-
-XhrPollingTransport.enabled = XhrStreamingTransport.enabled;
-XhrPollingTransport.roundTrips = 2; // preflight, ajax
-
-
-// xdr-polling
-var XdrPollingTransport = SockJS['xdr-polling'] = function(ri, trans_url) {
-    this.run(ri, trans_url, '/xhr', XhrReceiver, utils.XDRObject);
-};
-
-XdrPollingTransport.prototype = new AjaxBasedTransport();
-
-XdrPollingTransport.enabled = XdrStreamingTransport.enabled;
-XdrPollingTransport.roundTrips = 2; // preflight, ajax
diff --git a/lib/utils.js b/lib/utils.js
index 49ae47c..3c233f5 100644
--- a/lib/utils.js
+++ b/lib/utils.js
@@ -1,3 +1,4 @@
+'use strict';
 /*
  * ***** BEGIN LICENSE BLOCK *****
  * Copyright (c) 2011-2012 VMware, Inc.
@@ -6,17 +7,20 @@
  * ***** END LICENSE BLOCK *****
  */
 
+var JSON3 = require('json3').noConflict();
+var utils = {};
+
 // This string has length 32, a power of 2, so the modulus doesn't introduce a
 // bias.
 var random_string_chars = 'abcdefghijklmnopqrstuvwxyz012345';
 // Use real randomness when available.
-if (_window.crypto && _window.crypto.getRandomValues) {
+if (window.crypto && window.crypto.getRandomValues) {
     utils.random_string = function(length) {
         var max = random_string_chars.length;
         var ret = [];
         var bytes = new Uint8Array(length);
 
-        _window.crypto.getRandomValues(bytes);
+        window.crypto.getRandomValues(bytes);
         for(var i=0; i < length; i++) {
             ret.push( random_string_chars[bytes[i] % max] );
         }
@@ -37,7 +41,7 @@ utils.random_number = function(max) {
 };
 utils.random_number_string = function(max) {
     var t = (''+(max - 1)).length;
-    var p = Array(t+1).join('0');
+    var p = new Array(t+1).join('0');
     return (p + utils.random_number(max)).slice(-t);
 };
 
@@ -50,7 +54,7 @@ utils.getOrigin = function(url) {
 
 utils.isSameOriginUrl = function(url_a, url_b) {
     // location.origin would do, but it's not always available.
-    if (!url_b) url_b = _window.location.href;
+    if (!url_b) url_b = window.location.href;
 
     return (url_a.split('/').slice(0,3).join('/')
                 ===
@@ -58,7 +62,7 @@ utils.isSameOriginUrl = function(url_a, url_b) {
 };
 
 utils.isSameOriginScheme = function(url_a, url_b) {
-    if (!url_b) url_b = _window.location.href;
+    if (!url_b) url_b = window.location.href;
 
     return (url_a.split(':')[0] === url_b.split(':')[0]);
 };
@@ -84,16 +88,16 @@ utils.objectExtend = function(dst, src) {
     return dst;
 };
 
-var WPrefix = '_jp';
+var WPrefix = utils.WPrefix = '_jp';
 
 utils.polluteGlobalNamespace = function() {
-    if (!(WPrefix in _window)) {
-        _window[WPrefix] = {};
+    if (!(WPrefix in window)) {
+        window[WPrefix] = {};
     }
 };
 
 utils.closeFrame = function (code, reason) {
-    return 'c'+JSON.stringify([code, reason]);
+    return 'c'+JSON3.stringify([code, reason]);
 };
 
 utils.userSetCode = function (code) {
@@ -114,7 +118,7 @@ utils.countRTO = function (rtt) {
 };
 
 utils.log = function() {
-    if (_window.console && console.log && console.log.apply) {
+    if (window.console && console.log && console.log.apply) {
         console.log.apply(console, arguments);
     }
 };
@@ -134,7 +138,7 @@ utils.flatUrl = function(url) {
 };
 
 utils.amendUrl = function(url) {
-    var dl = _document.location;
+    var dl = document.location;
     if (!url) {
         throw new Error('Wrong url for SockJS');
     }
@@ -155,12 +159,12 @@ utils.amendUrl = function(url) {
 
     // We have a full url here, with proto and host. For some browsers
     // http://localhost:80/ is not in the same origin as http://localhost/
-	// Remove explicit :80 or :443 in such cases. See #74
+    // Remove explicit :80 or :443 in such cases. See #74
     var parts = url.split("/");
     if ((parts[0] === "http:" && /:80$/.test(parts[2])) ||
-	    (parts[0] === "https:" && /:443$/.test(parts[2]))) {
-		parts[2] = parts[2].replace(/:(80|443)$/, "");
-	}
+        (parts[0] === "https:" && /:443$/.test(parts[2]))) {
+        parts[2] = parts[2].replace(/:(80|443)$/, "");
+    }
     url = parts.join("/");
     return url;
 };
@@ -187,7 +191,7 @@ utils.arrSkip = function(arr, obj) {
 
 // Via: https://gist.github.com/1133122/2121c601c5549155483f50be3da5305e83b8c5df
 utils.isArray = Array.isArray || function(value) {
-    return {}.toString.call(value).indexOf('Array') >= 0
+    return {}.toString.call(value).indexOf('Array') >= 0;
 };
 
 utils.delay = function(t, fun) {
@@ -240,7 +244,7 @@ var extra_escapable = /[\x00-\x1f\ud800-\udfff\ufffe\uffff\u0300-\u0333\u033d-\u
     extra_lookup;
 
 // JSON Quote string. Use native implementation when possible.
-var JSONQuote = (JSON && JSON.stringify) || function(string) {
+var quoteJSON = (JSON3 && JSON3.stringify) || function(string) {
     json_escapable.lastIndex = 0;
     if (json_escapable.test(string)) {
         string = string.replace(json_escapable, function(a) {
@@ -254,8 +258,8 @@ var JSONQuote = (JSON && JSON.stringify) || function(string) {
 // characters.
 var unroll_lookup = function(escapable) {
     var i;
-    var unrolled = {}
-    var c = []
+    var unrolled = {};
+    var c = [];
     for(i=0; i<65536; i++) {
         c.push( String.fromCharCode(i) );
     }
@@ -272,7 +276,7 @@ var unroll_lookup = function(escapable) {
 // often break. Especially, take care of unicode surrogates:
 //    http://en.wikipedia.org/wiki/Mapping_of_Unicode_characters#Surrogates
 utils.quote = function(string) {
-    var quoted = JSONQuote(string);
+    var quoted = quoteJSON(string);
 
     // In most cases this should be very fast and good enough.
     extra_escapable.lastIndex = 0;
@@ -285,7 +289,7 @@ utils.quote = function(string) {
     return quoted.replace(extra_escapable, function(a) {
         return extra_lookup[a];
     });
-}
+};
 
 var _all_protocols = ['websocket',
                       'xdr-streaming',
@@ -325,7 +329,7 @@ utils.detectProtocols = function(probed, protocols_whitelist, info) {
                 maybe_push(protos);
             }
         }
-    }
+    };
 
     // 1. Websocket
     if (info.websocket !== false) {
@@ -356,4 +360,232 @@ utils.detectProtocols = function(probed, protocols_whitelist, info) {
         }
     }
     return protocols;
-}
+};
+
+// 1. Is natively via XHR
+// 2. Is natively via XDR
+// 3. Nope, but postMessage is there so it should work via the Iframe.
+// 4. Nope, sorry.
+utils.isXHRCorsCapable = function() {
+    if (window.XMLHttpRequest && 'withCredentials' in new XMLHttpRequest()) {
+        return 1;
+    }
+    // XDomainRequest doesn't work if page is served from file://
+    if (window.XDomainRequest && document.domain) {
+        return 2;
+    }
+    if (IframeTransport.enabled()) {
+        return 3;
+    }
+    return 4;
+};
+
+// May be used by htmlfile jsonp and transports.
+var MPrefix = '_sockjs_global';
+utils.createHook = function() {
+    var window_id = 'a' + utils.random_string(8);
+    if (!(MPrefix in window)) {
+        var map = {};
+        window[MPrefix] = function(window_id) {
+            if (!(window_id in map)) {
+                map[window_id] = {
+                    id: window_id,
+                    del: function() {delete map[window_id];}
+                };
+            }
+            return map[window_id];
+        };
+    }
+    return window[MPrefix](window_id);
+};
+
+utils.attachMessage = function(listener) {
+    utils.attachEvent('message', listener);
+};
+utils.attachEvent = function(event, listener) {
+    if (typeof window.addEventListener !== 'undefined') {
+        window.addEventListener(event, listener, false);
+    } else {
+        // IE quirks.
+        // According to: http://stevesouders.com/misc/test-postmessage.php
+        // the message gets delivered only to 'document', not 'window'.
+        document.attachEvent("on" + event, listener);
+        // I get 'window' for ie8.
+        window.attachEvent("on" + event, listener);
+    }
+};
+
+utils.detachMessage = function(listener) {
+    utils.detachEvent('message', listener);
+};
+utils.detachEvent = function(event, listener) {
+    if (typeof window.addEventListener !== 'undefined') {
+        window.removeEventListener(event, listener, false);
+    } else {
+        document.detachEvent("on" + event, listener);
+        window.detachEvent("on" + event, listener);
+    }
+};
+
+
+var on_unload = {};
+// Things registered after beforeunload are to be called immediately.
+var after_unload = false;
+
+var trigger_unload_callbacks = function() {
+    for(var ref in on_unload) {
+        on_unload[ref]();
+        delete on_unload[ref];
+    }
+};
+
+var unload_triggered = function() {
+    if(after_unload) return;
+    after_unload = true;
+    trigger_unload_callbacks();
+};
+
+// 'unload' alone is not reliable in opera within an iframe, but we
+// can't use `beforeunload` as IE fires it on javascript: links.
+utils.attachEvent('unload', unload_triggered);
+
+utils.unload_add = function(listener) {
+    var ref = utils.random_string(8);
+    on_unload[ref] = listener;
+    if (after_unload) {
+        utils.delay(trigger_unload_callbacks);
+    }
+    return ref;
+};
+utils.unload_del = function(ref) {
+    if (ref in on_unload)
+        delete on_unload[ref];
+};
+
+
+utils.createIframe = function (iframe_url, error_callback) {
+    var iframe = document.createElement('iframe');
+    var tref, unload_ref;
+    var unattach = function() {
+        clearTimeout(tref);
+        // Explorer had problems with that.
+        try {iframe.onload = null;} catch (x) {}
+        iframe.onerror = null;
+    };
+    var cleanup = function() {
+        if (iframe) {
+            unattach();
+            // This timeout makes chrome fire onbeforeunload event
+            // within iframe. Without the timeout it goes straight to
+            // onunload.
+            setTimeout(function() {
+                if(iframe) {
+                    iframe.parentNode.removeChild(iframe);
+                }
+                iframe = null;
+            }, 0);
+            utils.unload_del(unload_ref);
+        }
+    };
+    var onerror = function(r) {
+        if (iframe) {
+            cleanup();
+            error_callback(r);
+        }
+    };
+    var post = function(msg, origin) {
+        try {
+            // When the iframe is not loaded, IE raises an exception
+            // on 'contentWindow'.
+            if (iframe && iframe.contentWindow) {
+                setTimeout(function() {
+                    iframe.contentWindow.postMessage(msg, origin);
+                }, 0);
+            }
+        } catch (x) {}
+    };
+
+    iframe.src = iframe_url;
+    iframe.style.display = 'none';
+    iframe.style.position = 'absolute';
+    iframe.onerror = function(){onerror('onerror');};
+    iframe.onload = function() {
+        // `onload` is triggered before scripts on the iframe are
+        // executed. Give it few seconds to actually load stuff.
+        clearTimeout(tref);
+        tref = setTimeout(function(){onerror('onload timeout');}, 2000);
+    };
+    document.body.appendChild(iframe);
+    tref = setTimeout(function(){onerror('timeout');}, 15000);
+    unload_ref = utils.unload_add(cleanup);
+    return {
+        post: post,
+        cleanup: cleanup,
+        loaded: unattach
+    };
+};
+
+/* jshint undef: false, newcap: false */
+utils.createHtmlfile = function (iframe_url, error_callback) {
+    var doc = new ActiveXObject('htmlfile');
+    var tref, unload_ref;
+    var iframe;
+    var unattach = function() {
+        clearTimeout(tref);
+    };
+    var cleanup = function() {
+        if (doc) {
+            unattach();
+            utils.unload_del(unload_ref);
+            iframe.parentNode.removeChild(iframe);
+            iframe = doc = null;
+            CollectGarbage();
+        }
+    };
+    var onerror = function(r)  {
+        if (doc) {
+            cleanup();
+            error_callback(r);
+        }
+    };
+    var post = function(msg, origin) {
+        try {
+            // When the iframe is not loaded, IE raises an exception
+            // on 'contentWindow'.
+            if (iframe && iframe.contentWindow) {
+                setTimeout(function() {
+                    iframe.contentWindow.postMessage(msg, origin);
+                }, 0);
+            }
+        } catch (x) {}
+    };
+
+    doc.open();
+    doc.write('<html><s' + 'cript>' +
+              'document.domain="' + document.domain + '";' +
+              '</s' + 'cript></html>');
+    doc.close();
+    doc.parentWindow[utils.WPrefix] = window[utils.WPrefix];
+    var c = doc.createElement('div');
+    doc.body.appendChild(c);
+    iframe = doc.createElement('iframe');
+    c.appendChild(iframe);
+    iframe.src = iframe_url;
+    tref = setTimeout(function(){onerror('timeout');}, 15000);
+    unload_ref = utils.unload_add(cleanup);
+    return {
+        post: post,
+        cleanup: cleanup,
+        loaded: unattach
+    };
+};
+
+utils.postMessage = function (type, data) {
+    if (parent !== window) {
+        parent.postMessage(utils.curr_window_id + type + (data || ''), '*');
+    } else {
+        utils.log("Can't postMessage, no parent window.", type, data);
+    }
+};
+
+module.exports = utils;
\ No newline at end of file
diff --git a/lib/xdr-polling.js b/lib/xdr-polling.js
new file mode 100644
index 0000000..8e29867
--- /dev/null
+++ b/lib/xdr-polling.js
@@ -0,0 +1,24 @@
+'use strict';
+/*
+ * ***** BEGIN LICENSE BLOCK *****
+ * Copyright (c) 2011-2012 VMware, Inc.
+ *
+ * For the license see COPYING.
+ * ***** END LICENSE BLOCK *****
+ */
+
+var AjaxBasedTransport = require('./ajax-based');
+var XdrStreamingTransport = require('./xdr-streaming');
+var utils = require('./utils');
+var XhrReceiver = require('./trans-receiver-xhr');
+
+function XdrPollingTransport(ri, trans_url) {
+    this.run(ri, trans_url, '/xhr', XhrReceiver, utils.XDRObject);
+}
+
+XdrPollingTransport.prototype = new AjaxBasedTransport();
+
+XdrPollingTransport.enabled = XdrStreamingTransport.enabled;
+XdrPollingTransport.roundTrips = 2; // preflight, ajax
+
+module.exports = XdrPollingTransport;
\ No newline at end of file
diff --git a/lib/xdr-streaming.js b/lib/xdr-streaming.js
new file mode 100644
index 0000000..7e386d8
--- /dev/null
+++ b/lib/xdr-streaming.js
@@ -0,0 +1,29 @@
+'use strict';
+/*
+ * ***** BEGIN LICENSE BLOCK *****
+ * Copyright (c) 2011-2012 VMware, Inc.
+ *
+ * For the license see COPYING.
+ * ***** END LICENSE BLOCK *****
+ */
+
+var AjaxBasedTransport = require('./ajax-based');
+var XhrReceiver = require('./trans-receiver-xhr');
+var utils = require('./utils');
+
+// According to:
+//   http://stackoverflow.com/questions/1641507/detect-browser-support-for-cross-domain-xmlhttprequests
+//   http://hacks.mozilla.org/2009/07/cross-site-xmlhttprequest-with-cors/
+
+function XdrStreamingTransport(ri, trans_url) {
+    this.run(ri, trans_url, '/xhr_streaming', XhrReceiver, utils.XDRObject);
+}
+
+XdrStreamingTransport.prototype = new AjaxBasedTransport();
+
+XdrStreamingTransport.enabled = function() {
+    return !!window.XDomainRequest;
+};
+XdrStreamingTransport.roundTrips = 2; // preflight, ajax
+
+module.exports = XdrStreamingTransport;
\ No newline at end of file
diff --git a/lib/xdr.js b/lib/xdr.js
new file mode 100644
index 0000000..a75d250
--- /dev/null
+++ b/lib/xdr.js
@@ -0,0 +1,65 @@
+'use strict';
+
+var utils = require('./utils');
+var EventEmitter = require('./eventemitter');
+
+// References:
+//   http://ajaxian.com/archives/100-line-ajax-wrapper
+//   http://msdn.microsoft.com/en-us/library/cc288060(v=VS.85).aspx
+
+function XDRObject(method, url, payload) {
+    var that = this;
+    utils.delay(function(){that._start(method, url, payload);});
+}
+
+XDRObject.prototype = new EventEmitter(['chunk', 'finish']);
+XDRObject.prototype._start = function(method, url, payload) {
+    var that = this;
+    var xdr = new XDomainRequest();
+    // IE caches even POSTs
+    url += ((url.indexOf('?') === -1) ? '?' : '&') + 't='+(+new Date());
+
+    var onerror = xdr.ontimeout = xdr.onerror = function() {
+        that.emit('finish', 0, '');
+        that._cleanup(false);
+    };
+    xdr.onprogress = function() {
+        that.emit('chunk', 200, xdr.responseText);
+    };
+    xdr.onload = function() {
+        that.emit('finish', 200, xdr.responseText);
+        that._cleanup(false);
+    };
+    that.xdr = xdr;
+    that.unload_ref = utils.unload_add(function(){that._cleanup(true);});
+    try {
+        // Fails with AccessDenied if port number is bogus
+        that.xdr.open(method, url);
+        that.xdr.send(payload);
+    } catch(x) {
+        onerror();
+    }
+};
+
+XDRObject.prototype._cleanup = function(abort) {
+    var that = this;
+    if (!that.xdr) return;
+    utils.unload_del(that.unload_ref);
+
+    that.xdr.ontimeout = that.xdr.onerror = that.xdr.onprogress =
+        that.xdr.onload = null;
+    if (abort) {
+        try {
+            that.xdr.abort();
+        } catch(x) {}
+    }
+    that.unload_ref = that.xdr = null;
+};
+
+XDRObject.prototype.close = function() {
+    var that = this;
+    that.nuke();
+    that._cleanup(true);
+};
+
+module.exports = XDRObject;
\ No newline at end of file
diff --git a/lib/xhr-cors.js b/lib/xhr-cors.js
new file mode 100644
index 0000000..c34dd77
--- /dev/null
+++ b/lib/xhr-cors.js
@@ -0,0 +1,12 @@
+'use strict';
+
+var AbstractXHRObject = require('./abstract-xhr');
+var utils = require('./utils');
+
+function XHRCorsObject() {
+    var that = this, args = arguments;
+    utils.delay(function(){that._start.apply(that, args);});
+}
+XHRCorsObject.prototype = new AbstractXHRObject();
+
+module.exports = XHRCorsObject;
\ No newline at end of file
diff --git a/lib/xhr-local.js b/lib/xhr-local.js
new file mode 100644
index 0000000..a729a9b
--- /dev/null
+++ b/lib/xhr-local.js
@@ -0,0 +1,16 @@
+'use strict';
+
+var utils = require('./utils');
+var AbstractXHRObject = require('./abstract-xhr');
+
+function XHRLocalObject(method, url, payload) {
+    var that = this;
+    utils.delay(function(){
+        that._start(method, url, payload, {
+            no_credentials: true
+        });
+    });
+}
+XHRLocalObject.prototype = new AbstractXHRObject();
+
+module.exports = XHRLocalObject;
\ No newline at end of file
diff --git a/lib/xhr-polling.js b/lib/xhr-polling.js
new file mode 100644
index 0000000..b57ac07
--- /dev/null
+++ b/lib/xhr-polling.js
@@ -0,0 +1,25 @@
+'use strict';
+/*
+ * ***** BEGIN LICENSE BLOCK *****
+ * Copyright (c) 2011-2012 VMware, Inc.
+ *
+ * For the license see COPYING.
+ * ***** END LICENSE BLOCK *****
+ */
+
+var AjaxBasedTransport = require('./ajax-based');
+var XhrStreamingTransport = require('./xhr-streaming');
+var XhrReceiver = require('./trans-receiver-xhr');
+var utils = require('./utils');
+
+
+function XhrPollingTransport(ri, trans_url) {
+    this.run(ri, trans_url, '/xhr', XhrReceiver, utils.XHRCorsObject);
+}
+
+XhrPollingTransport.prototype = new AjaxBasedTransport();
+
+XhrPollingTransport.enabled = XhrStreamingTransport.enabled;
+XhrPollingTransport.roundTrips = 2; // preflight, ajax
+
+module.exports = XhrPollingTransport;
\ No newline at end of file
diff --git a/lib/xhr-streaming.js b/lib/xhr-streaming.js
new file mode 100644
index 0000000..0a98429
--- /dev/null
+++ b/lib/xhr-streaming.js
@@ -0,0 +1,38 @@
+'use strict';
+/*
+ * ***** BEGIN LICENSE BLOCK *****
+ * Copyright (c) 2011-2012 VMware, Inc.
+ *
+ * For the license see COPYING.
+ * ***** END LICENSE BLOCK *****
+ */
+
+var AjaxBasedTransport = require('./ajax-based');
+var XhrReceiver = require('./trans-receiver-xhr');
+var utils = require('./utils');
+
+function XhrStreamingTransport(ri, trans_url) {
+    this.run(ri, trans_url, '/xhr_streaming', XhrReceiver, utils.XHRCorsObject);
+}
+
+XhrStreamingTransport.prototype = new AjaxBasedTransport();
+
+XhrStreamingTransport.enabled = function() {
+    // Support for CORS Ajax aka Ajax2? Opera 12 claims CORS but
+    // doesn't do streaming.
+    try {
+        return (window.XMLHttpRequest &&
+                'withCredentials' in new XMLHttpRequest() &&
+                (!/opera/i.test(navigator.userAgent)));
+    }
+    catch (ignored) {
+        return false;
+    }
+};
+XhrStreamingTransport.roundTrips = 2; // preflight, ajax
+
+// Safari gets confused when a streaming ajax request is started
+// before onload. This causes the load indicator to spin indefinetely.
+XhrStreamingTransport.need_body = true;
+
+module.exports = XhrStreamingTransport;
\ No newline at end of file
diff --git a/package.json b/package.json
index c999ebc..883565e 100644
--- a/package.json
+++ b/package.json
@@ -12,13 +12,19 @@
       "email": "bkahle at gmail.com"
     }
   ],
+  "dependencies": {
+    "json3": "^3.3.1"
+  },
   "devDependencies": {
+    "browserify": "^4.1.5",
     "coffee-script": "1.2.x",
+    "gulp": "^3.6.2",
+    "mocha": "^1.18.2",
     "node-static": "0.5.9",
     "optimist": "0.3.5",
     "sockjs": "^0.3.8",
     "uglify-js": "1.2.5",
-    "mocha": "^1.18.2",
+    "vinyl-source-stream": "^0.1.1",
     "zuul": "^1.6.4"
   },
   "homepage": "http://sockjs.org",
@@ -36,4 +42,4 @@
     "test": "./node_modules/zuul/bin/zuul -- tests/html/lib/unittests.js tests/html/lib/domtests.js tests/html/lib/endtoendtests.js tests/html/lib/protocols.js",
     "test_local": "./node_modules/zuul/bin/zuul --local 9090 --ui qunit -- tests/html/lib/unittests.js tests/html/lib/domtests.js tests/html/lib/endtoendtests.js tests/html/lib/protocols.js"
   }
-}
+}
\ No newline at end of file

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