support-chat: comparison src/js/strophe.js

comparison: src/js/strophe.js

src/js/strophe.js

changeset 36: 562ff07a3968
parent 18: 9e4230bb66e4

equal deleted inserted replaced

-:43152bfafcc4
+:562ff07a3968
+// This code was written by Tyler Akins and has been placed in the
+// public domain.  It would be nice if you left this header intact.
+// Base64 code from Tyler Akins -- http://rumkin.com
+var Base64 = (function () {
+var keyStr = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";
+var obj = {
+/**
+* Encodes a string in base64
+* @param {String} input The string to encode in base64.
+*/
+encode: function (input) {
+var output = "";
+var chr1, chr2, chr3;
+var enc1, enc2, enc3, enc4;
+var i = 0;
+do {
+chr1 = input.charCodeAt(i++);
+chr2 = input.charCodeAt(i++);
+chr3 = input.charCodeAt(i++);
+enc1 = chr1 >> 2;
+enc2 = ((chr1 & 3) << 4) | (chr2 >> 4);
+enc3 = ((chr2 & 15) << 2) | (chr3 >> 6);
+enc4 = chr3 & 63;
+if (isNaN(chr2)) {
+enc3 = enc4 = 64;
+} else if (isNaN(chr3)) {
+enc4 = 64;
+}
+output = output + keyStr.charAt(enc1) + keyStr.charAt(enc2) +
+keyStr.charAt(enc3) + keyStr.charAt(enc4);
+} while (i < input.length);
+return output;
+},
+/**
+* Decodes a base64 string.
+* @param {String} input The string to decode.
+*/
+decode: function (input) {
+var output = "";
+var chr1, chr2, chr3;
+var enc1, enc2, enc3, enc4;
+var i = 0;
+// remove all characters that are not A-Z, a-z, 0-9, +, /, or =
+input = input.replace(/[^A-Za-z0-9\+\/\=]/g, "");
+do {
+enc1 = keyStr.indexOf(input.charAt(i++));
+enc2 = keyStr.indexOf(input.charAt(i++));
+enc3 = keyStr.indexOf(input.charAt(i++));
+enc4 = keyStr.indexOf(input.charAt(i++));
+chr1 = (enc1 << 2) | (enc2 >> 4);
+chr2 = ((enc2 & 15) << 4) | (enc3 >> 2);
+chr3 = ((enc3 & 3) << 6) | enc4;
+output = output + String.fromCharCode(chr1);
+if (enc3 != 64) {
+output = output + String.fromCharCode(chr2);
+}
+if (enc4 != 64) {
+output = output + String.fromCharCode(chr3);
+}
+} while (i < input.length);
+return output;
+}
+};
+return obj;
+})();
+/*
+* A JavaScript implementation of the RSA Data Security, Inc. MD5 Message
+* Digest Algorithm, as defined in RFC 1321.
+* Version 2.1 Copyright (C) Paul Johnston 1999 - 2002.
+* Other contributors: Greg Holt, Andrew Kepert, Ydnar, Lostinet
+* Distributed under the BSD License
+* See http://pajhome.org.uk/crypt/md5 for more info.
+*/
+var MD5 = (function () {
+/*
+* Configurable variables. You may need to tweak these to be compatible with
+* the server-side, but the defaults work in most cases.
+*/
+var hexcase = 0;  /* hex output format. 0 - lowercase; 1 - uppercase */
+var b64pad  = ""; /* base-64 pad character. "=" for strict RFC compliance */
+var chrsz   = 8;  /* bits per input character. 8 - ASCII; 16 - Unicode */
+/*
+* Add integers, wrapping at 2^32. This uses 16-bit operations internally
+* to work around bugs in some JS interpreters.
+*/
+var safe_add = function (x, y) {
+var lsw = (x & 0xFFFF) + (y & 0xFFFF);
+var msw = (x >> 16) + (y >> 16) + (lsw >> 16);
+return (msw << 16) | (lsw & 0xFFFF);
+};
+/*
+* Bitwise rotate a 32-bit number to the left.
+*/
+var bit_rol = function (num, cnt) {
+return (num << cnt) | (num >>> (32 - cnt));
+};
+/*
+* Convert a string to an array of little-endian words
+* If chrsz is ASCII, characters >255 have their hi-byte silently ignored.
+*/
+var str2binl = function (str) {
+var bin = [];
+var mask = (1 << chrsz) - 1;
+for(var i = 0; i < str.length * chrsz; i += chrsz)
+{
+bin[i>>5] |= (str.charCodeAt(i / chrsz) & mask) << (i%32);
+}
+return bin;
+};
+/*
+* Convert an array of little-endian words to a string
+*/
+var binl2str = function (bin) {
+var str = "";
+var mask = (1 << chrsz) - 1;
+for(var i = 0; i < bin.length * 32; i += chrsz)
+{
+str += String.fromCharCode((bin[i>>5] >>> (i % 32)) & mask);
+}
+return str;
+};
+/*
+* Convert an array of little-endian words to a hex string.
+*/
+var binl2hex = function (binarray) {
+var hex_tab = hexcase ? "0123456789ABCDEF" : "0123456789abcdef";
+var str = "";
+for(var i = 0; i < binarray.length * 4; i++)
+{
+str += hex_tab.charAt((binarray[i>>2] >> ((i%4)*8+4)) & 0xF) +
+hex_tab.charAt((binarray[i>>2] >> ((i%4)*8  )) & 0xF);
+}
+return str;
+};
+/*
+* Convert an array of little-endian words to a base-64 string
+*/
+var binl2b64 = function (binarray) {
+var tab = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
+var str = "";
+var triplet, j;
+for(var i = 0; i < binarray.length * 4; i += 3)
+{
+triplet = (((binarray[i   >> 2] >> 8 * ( i   %4)) & 0xFF) << 16) |
+(((binarray[i+1 >> 2] >> 8 * ((i+1)%4)) & 0xFF) << 8 ) |
+((binarray[i+2 >> 2] >> 8 * ((i+2)%4)) & 0xFF);
+for(j = 0; j < 4; j++)
+{
+if(i * 8 + j * 6 > binarray.length * 32) { str += b64pad; }
+else { str += tab.charAt((triplet >> 6*(3-j)) & 0x3F); }
+}
+}
+return str;
+};
+/*
+* These functions implement the four basic operations the algorithm uses.
+*/
+var md5_cmn = function (q, a, b, x, s, t) {
+return safe_add(bit_rol(safe_add(safe_add(a, q),safe_add(x, t)), s),b);
+};
+var md5_ff = function (a, b, c, d, x, s, t) {
+return md5_cmn((b & c) | ((~b) & d), a, b, x, s, t);
+};
+var md5_gg = function (a, b, c, d, x, s, t) {
+return md5_cmn((b & d) | (c & (~d)), a, b, x, s, t);
+};
+var md5_hh = function (a, b, c, d, x, s, t) {
+return md5_cmn(b ^ c ^ d, a, b, x, s, t);
+};
+var md5_ii = function (a, b, c, d, x, s, t) {
+return md5_cmn(c ^ (b | (~d)), a, b, x, s, t);
+};
+/*
+* Calculate the MD5 of an array of little-endian words, and a bit length
+*/
+var core_md5 = function (x, len) {
+/* append padding */
+x[len >> 5] |= 0x80 << ((len) % 32);
+x[(((len + 64) >>> 9) << 4) + 14] = len;
+var a =  1732584193;
+var b = -271733879;
+var c = -1732584194;
+var d =  271733878;
+var olda, oldb, oldc, oldd;
+for (var i = 0; i < x.length; i += 16)
+{
+olda = a;
+oldb = b;
+oldc = c;
+oldd = d;
+a = md5_ff(a, b, c, d, x[i+ 0], 7 , -680876936);
+d = md5_ff(d, a, b, c, x[i+ 1], 12, -389564586);
+c = md5_ff(c, d, a, b, x[i+ 2], 17,  606105819);
+b = md5_ff(b, c, d, a, x[i+ 3], 22, -1044525330);
+a = md5_ff(a, b, c, d, x[i+ 4], 7 , -176418897);
+d = md5_ff(d, a, b, c, x[i+ 5], 12,  1200080426);
+c = md5_ff(c, d, a, b, x[i+ 6], 17, -1473231341);
+b = md5_ff(b, c, d, a, x[i+ 7], 22, -45705983);
+a = md5_ff(a, b, c, d, x[i+ 8], 7 ,  1770035416);
+d = md5_ff(d, a, b, c, x[i+ 9], 12, -1958414417);
+c = md5_ff(c, d, a, b, x[i+10], 17, -42063);
+b = md5_ff(b, c, d, a, x[i+11], 22, -1990404162);
+a = md5_ff(a, b, c, d, x[i+12], 7 ,  1804603682);
+d = md5_ff(d, a, b, c, x[i+13], 12, -40341101);
+c = md5_ff(c, d, a, b, x[i+14], 17, -1502002290);
+b = md5_ff(b, c, d, a, x[i+15], 22,  1236535329);
+a = md5_gg(a, b, c, d, x[i+ 1], 5 , -165796510);
+d = md5_gg(d, a, b, c, x[i+ 6], 9 , -1069501632);
+c = md5_gg(c, d, a, b, x[i+11], 14,  643717713);
+b = md5_gg(b, c, d, a, x[i+ 0], 20, -373897302);
+a = md5_gg(a, b, c, d, x[i+ 5], 5 , -701558691);
+d = md5_gg(d, a, b, c, x[i+10], 9 ,  38016083);
+c = md5_gg(c, d, a, b, x[i+15], 14, -660478335);
+b = md5_gg(b, c, d, a, x[i+ 4], 20, -405537848);
+a = md5_gg(a, b, c, d, x[i+ 9], 5 ,  568446438);
+d = md5_gg(d, a, b, c, x[i+14], 9 , -1019803690);
+c = md5_gg(c, d, a, b, x[i+ 3], 14, -187363961);
+b = md5_gg(b, c, d, a, x[i+ 8], 20,  1163531501);
+a = md5_gg(a, b, c, d, x[i+13], 5 , -1444681467);
+d = md5_gg(d, a, b, c, x[i+ 2], 9 , -51403784);
+c = md5_gg(c, d, a, b, x[i+ 7], 14,  1735328473);
+b = md5_gg(b, c, d, a, x[i+12], 20, -1926607734);
+a = md5_hh(a, b, c, d, x[i+ 5], 4 , -378558);
+d = md5_hh(d, a, b, c, x[i+ 8], 11, -2022574463);
+c = md5_hh(c, d, a, b, x[i+11], 16,  1839030562);
+b = md5_hh(b, c, d, a, x[i+14], 23, -35309556);
+a = md5_hh(a, b, c, d, x[i+ 1], 4 , -1530992060);
+d = md5_hh(d, a, b, c, x[i+ 4], 11,  1272893353);
+c = md5_hh(c, d, a, b, x[i+ 7], 16, -155497632);
+b = md5_hh(b, c, d, a, x[i+10], 23, -1094730640);
+a = md5_hh(a, b, c, d, x[i+13], 4 ,  681279174);
+d = md5_hh(d, a, b, c, x[i+ 0], 11, -358537222);
+c = md5_hh(c, d, a, b, x[i+ 3], 16, -722521979);
+b = md5_hh(b, c, d, a, x[i+ 6], 23,  76029189);
+a = md5_hh(a, b, c, d, x[i+ 9], 4 , -640364487);
+d = md5_hh(d, a, b, c, x[i+12], 11, -421815835);
+c = md5_hh(c, d, a, b, x[i+15], 16,  530742520);
+b = md5_hh(b, c, d, a, x[i+ 2], 23, -995338651);
+a = md5_ii(a, b, c, d, x[i+ 0], 6 , -198630844);
+d = md5_ii(d, a, b, c, x[i+ 7], 10,  1126891415);
+c = md5_ii(c, d, a, b, x[i+14], 15, -1416354905);
+b = md5_ii(b, c, d, a, x[i+ 5], 21, -57434055);
+a = md5_ii(a, b, c, d, x[i+12], 6 ,  1700485571);
+d = md5_ii(d, a, b, c, x[i+ 3], 10, -1894986606);
+c = md5_ii(c, d, a, b, x[i+10], 15, -1051523);
+b = md5_ii(b, c, d, a, x[i+ 1], 21, -2054922799);
+a = md5_ii(a, b, c, d, x[i+ 8], 6 ,  1873313359);
+d = md5_ii(d, a, b, c, x[i+15], 10, -30611744);
+c = md5_ii(c, d, a, b, x[i+ 6], 15, -1560198380);
+b = md5_ii(b, c, d, a, x[i+13], 21,  1309151649);
+a = md5_ii(a, b, c, d, x[i+ 4], 6 , -145523070);
+d = md5_ii(d, a, b, c, x[i+11], 10, -1120210379);
+c = md5_ii(c, d, a, b, x[i+ 2], 15,  718787259);
+b = md5_ii(b, c, d, a, x[i+ 9], 21, -343485551);
+a = safe_add(a, olda);
+b = safe_add(b, oldb);
+c = safe_add(c, oldc);
+d = safe_add(d, oldd);
+}
+return [a, b, c, d];
+};
+/*
+* Calculate the HMAC-MD5, of a key and some data
+*/
+var core_hmac_md5 = function (key, data) {
+var bkey = str2binl(key);
+if(bkey.length > 16) { bkey = core_md5(bkey, key.length * chrsz); }
+var ipad = new Array(16), opad = new Array(16);
+for(var i = 0; i < 16; i++)
+{
+ipad[i] = bkey[i] ^ 0x36363636;
+opad[i] = bkey[i] ^ 0x5C5C5C5C;
+}
+var hash = core_md5(ipad.concat(str2binl(data)), 512 + data.length * chrsz);
+return core_md5(opad.concat(hash), 512 + 128);
+};
+var obj = {
+/*
+* These are the functions you'll usually want to call.
+* They take string arguments and return either hex or base-64 encoded
+* strings.
+*/
+hexdigest: function (s) {
+return binl2hex(core_md5(str2binl(s), s.length * chrsz));
+},
+b64digest: function (s) {
+return binl2b64(core_md5(str2binl(s), s.length * chrsz));
+},
+hash: function (s) {
+return binl2str(core_md5(str2binl(s), s.length * chrsz));
+},
+hmac_hexdigest: function (key, data) {
+return binl2hex(core_hmac_md5(key, data));
+},
+hmac_b64digest: function (key, data) {
+return binl2b64(core_hmac_md5(key, data));
+},
+hmac_hash: function (key, data) {
+return binl2str(core_hmac_md5(key, data));
+},
+/*
+* Perform a simple self-test to see if the VM is working
+*/
+test: function () {
+return MD5.hexdigest("abc") === "900150983cd24fb0d6963f7d28e17f72";
+}
+};
+return obj;
+})();
+/*
+This program is distributed under the terms of the MIT license.
+Please see the LICENSE file for details.
+Copyright 2006-2008, OGG, LLC
+*/
+/* jslint configuration: */
+/*global document, window, setTimeout, clearTimeout, console,
+XMLHttpRequest, ActiveXObject,
+Base64, MD5,
+Strophe, $build, $msg, $iq, $pres */
+/** File: strophe.js
+*  A JavaScript library for XMPP BOSH.
+*
+*  This is the JavaScript version of the Strophe library.  Since JavaScript
+*  has no facilities for persistent TCP connections, this library uses
+*  Bidirectional-streams Over Synchronous HTTP (BOSH) to emulate
+*  a persistent, stateful, two-way connection to an XMPP server.  More
+*  information on BOSH can be found in XEP 124.
+*/
+/** PrivateFunction: Function.prototype.bind
+*  Bind a function to an instance.
+*
+*  This Function object extension method creates a bound method similar
+*  to those in Python.  This means that the 'this' object will point
+*  to the instance you want.  See
+*  <a href='http://benjamin.smedbergs.us/blog/2007-01-03/bound-functions-and-function-imports-in-javascript/'>Bound Functions and Function Imports in JavaScript</a>
+*  for a complete explanation.
+*
+*  This extension already exists in some browsers (namely, Firefox 3), but
+*  we provide it to support those that don't.
+*
+*  Parameters:
+*    (Object) obj - The object that will become 'this' in the bound function.
+*
+*  Returns:
+*    The bound function.
+*/
+if (!Function.prototype.bind) {
+Function.prototype.bind = function (obj)
+{
+var func = this;
+return function () { return func.apply(obj, arguments); };
+};
+}
+/** PrivateFunction: Function.prototype.prependArg
+*  Prepend an argument to a function.
+*
+*  This Function object extension method returns a Function that will
+*  invoke the original function with an argument prepended.  This is useful
+*  when some object has a callback that needs to get that same object as
+*  an argument.  The following fragment illustrates a simple case of this
+*  > var obj = new Foo(this.someMethod);</code></blockquote>
+*
+*  Foo's constructor can now use func.prependArg(this) to ensure the
+*  passed in callback function gets the instance of Foo as an argument.
+*  Doing this without prependArg would mean not setting the callback
+*  from the constructor.
+*
+*  This is used inside Strophe for passing the Strophe.Request object to
+*  the onreadystatechange handler of XMLHttpRequests.
+*
+*  Parameters:
+*    arg - The argument to pass as the first parameter to the function.
+*
+*  Returns:
+*    A new Function which calls the original with the prepended argument.
+*/
+if (!Function.prototype.prependArg) {
+Function.prototype.prependArg = function (arg)
+{
+var func = this;
+return function () {
+var newargs = [arg];
+for (var i = 0; i < arguments.length; i++) {
+newargs.push(arguments[i]);
+}
+return func.apply(this, newargs);
+};
+};
+}
+/** PrivateFunction: Array.prototype.indexOf
+*  Return the index of an object in an array.
+*
+*  This function is not supplied by some JavaScript implementations, so
+*  we provide it if it is missing.  This code is from:
+*  http://developer.mozilla.org/En/Core_JavaScript_1.5_Reference:Objects:Array:indexOf
+*
+*  Parameters:
+*    (Object) elt - The object to look for.
+*    (Integer) from - The index from which to start looking. (optional).
+*
+*  Returns:
+*    The index of elt in the array or -1 if not found.
+*/
+if (!Array.prototype.indexOf)
+{
+Array.prototype.indexOf = function(elt /*, from*/)
+{
+var len = this.length;
+var from = Number(arguments[1]) || 0;
+from = (from < 0) ? Math.ceil(from) : Math.floor(from);
+if (from < 0) {
+from += len;
+}
+for (; from < len; from++) {
+if (from in this && this[from] === elt) {
+return from;
+}
+}
+return -1;
+};
+}
+/* All of the Strophe globals are defined in this special function below so
+* that references to the globals become closures.  This will ensure that
+* on page reload, these references will still be available to callbacks
+* that are still executing.
+*/
+(function (callback) {
+var Strophe;
+/** Function: $build
+*  Create a Strophe.Builder.
+*  This is an alias for 'new Strophe.Builder(name, attrs)'.
+*
+*  Parameters:
+*    (String) name - The root element name.
+*    (Object) attrs - The attributes for the root element in object notation.
+*
+*  Returns:
+*    A new Strophe.Builder object.
+*/
+function $build(name, attrs) { return new Strophe.Builder(name, attrs); }
+/** Function: $msg
+*  Create a Strophe.Builder with a <message/> element as the root.
+*
+*  Parmaeters:
+*    (Object) attrs - The <message/> element attributes in object notation.
+*
+*  Returns:
+*    A new Strophe.Builder object.
+*/
+function $msg(attrs) { return new Strophe.Builder("message", attrs); }
+/** Function: $iq
+*  Create a Strophe.Builder with an <iq/> element as the root.
+*
+*  Parameters:
+*    (Object) attrs - The <iq/> element attributes in object notation.
+*
+*  Returns:
+*    A new Strophe.Builder object.
+*/
+function $iq(attrs) { return new Strophe.Builder("iq", attrs); }
+/** Function: $pres
+*  Create a Strophe.Builder with a <presence/> element as the root.
+*
+*  Parameters:
+*    (Object) attrs - The <presence/> element attributes in object notation.
+*
+*  Returns:
+*    A new Strophe.Builder object.
+*/
+function $pres(attrs) { return new Strophe.Builder("presence", attrs); }
+/** Class: Strophe
+*  An object container for all Strophe library functions.
+*
+*  This class is just a container for all the objects and constants
+*  used in the library.  It is not meant to be instantiated, but to
+*  provide a namespace for library objects, constants, and functions.
+*/
+Strophe = {
+/** Constant: VERSION
+*  The version of the Strophe library. Unreleased builds will have
+*  a version of head-HASH where HASH is a partial revision.
+*/
+VERSION: "1.0.1",
+/** Constants: XMPP Namespace Constants
+*  Common namespace constants from the XMPP RFCs and XEPs.
+*
+*  NS.HTTPBIND - HTTP BIND namespace from XEP 124.
+*  NS.BOSH - BOSH namespace from XEP 206.
+*  NS.CLIENT - Main XMPP client namespace.
+*  NS.AUTH - Legacy authentication namespace.
+*  NS.ROSTER - Roster operations namespace.
+*  NS.PROFILE - Profile namespace.
+*  NS.DISCO_INFO - Service discovery info namespace from XEP 30.
+*  NS.DISCO_ITEMS - Service discovery items namespace from XEP 30.
+*  NS.MUC - Multi-User Chat namespace from XEP 45.
+*  NS.SASL - XMPP SASL namespace from RFC 3920.
+*  NS.STREAM - XMPP Streams namespace from RFC 3920.
+*  NS.BIND - XMPP Binding namespace from RFC 3920.
+*  NS.SESSION - XMPP Session namespace from RFC 3920.
+*/
+NS: {
+HTTPBIND: "http://jabber.org/protocol/httpbind",
+BOSH: "urn:xmpp:xbosh",
+CLIENT: "jabber:client",
+AUTH: "jabber:iq:auth",
+ROSTER: "jabber:iq:roster",
+PROFILE: "jabber:iq:profile",
+DISCO_INFO: "http://jabber.org/protocol/disco#info",
+DISCO_ITEMS: "http://jabber.org/protocol/disco#items",
+MUC: "http://jabber.org/protocol/muc",
+SASL: "urn:ietf:params:xml:ns:xmpp-sasl",
+STREAM: "http://etherx.jabber.org/streams",
+BIND: "urn:ietf:params:xml:ns:xmpp-bind",
+SESSION: "urn:ietf:params:xml:ns:xmpp-session",
+VERSION: "jabber:iq:version",
+STANZAS: "urn:ietf:params:xml:ns:xmpp-stanzas"
+},
+/** Function: addNamespace
+*  This function is used to extend the current namespaces in
+*	Strophe.NS.  It takes a key and a value with the key being the
+*	name of the new namespace, with its actual value.
+*	For example:
+*	Strophe.addNamespace('PUBSUB', "http://jabber.org/protocol/pubsub");
+*
+*  Parameters:
+*    (String) name - The name under which the namespace will be
+*      referenced under Strophe.NS
+*    (String) value - The actual namespace.
+*/
+addNamespace: function (name, value)
+{
+	Strophe.NS[name] = value;
+},
+/** Constants: Connection Status Constants
+*  Connection status constants for use by the connection handler
+*  callback.
+*
+*  Status.ERROR - An error has occurred
+*  Status.CONNECTING - The connection is currently being made
+*  Status.CONNFAIL - The connection attempt failed
+*  Status.AUTHENTICATING - The connection is authenticating
+*  Status.AUTHFAIL - The authentication attempt failed
+*  Status.CONNECTED - The connection has succeeded
+*  Status.DISCONNECTED - The connection has been terminated
+*  Status.DISCONNECTING - The connection is currently being terminated
+*  Status.ATTACHED - The connection has been attached
+*/
+Status: {
+ERROR: 0,
+CONNECTING: 1,
+CONNFAIL: 2,
+AUTHENTICATING: 3,
+AUTHFAIL: 4,
+CONNECTED: 5,
+DISCONNECTED: 6,
+DISCONNECTING: 7,
+ATTACHED: 8
+},
+/** Constants: Log Level Constants
+*  Logging level indicators.
+*
+*  LogLevel.DEBUG - Debug output
+*  LogLevel.INFO - Informational output
+*  LogLevel.WARN - Warnings
+*  LogLevel.ERROR - Errors
+*  LogLevel.FATAL - Fatal errors
+*/
+LogLevel: {
+DEBUG: 0,
+INFO: 1,
+WARN: 2,
+ERROR: 3,
+FATAL: 4
+},
+/** PrivateConstants: DOM Element Type Constants
+*  DOM element types.
+*
+*  ElementType.NORMAL - Normal element.
+*  ElementType.TEXT - Text data element.
+*/
+ElementType: {
+NORMAL: 1,
+TEXT: 3
+},
+/** PrivateConstants: Timeout Values
+*  Timeout values for error states.  These values are in seconds.
+*  These should not be changed unless you know exactly what you are
+*  doing.
+*
+*  TIMEOUT - Timeout multiplier. A waiting request will be considered
+*      failed after Math.floor(TIMEOUT * wait) seconds have elapsed.
+*      This defaults to 1.1, and with default wait, 66 seconds.
+*  SECONDARY_TIMEOUT - Secondary timeout multiplier. In cases where
+*      Strophe can detect early failure, it will consider the request
+*      failed if it doesn't return after
+*      Math.floor(SECONDARY_TIMEOUT * wait) seconds have elapsed.
+*      This defaults to 0.1, and with default wait, 6 seconds.
+*/
+TIMEOUT: 1.1,
+SECONDARY_TIMEOUT: 0.1,
+/** Function: forEachChild
+*  Map a function over some or all child elements of a given element.
+*
+*  This is a small convenience function for mapping a function over
+*  some or all of the children of an element.  If elemName is null, all
+*  children will be passed to the function, otherwise only children
+*  whose tag names match elemName will be passed.
+*
+*  Parameters:
+*    (XMLElement) elem - The element to operate on.
+*    (String) elemName - The child element tag name filter.
+*    (Function) func - The function to apply to each child.  This
+*      function should take a single argument, a DOM element.
+*/
+forEachChild: function (elem, elemName, func)
+{
+var i, childNode;
+for (i = 0; i < elem.childNodes.length; i++) {
+childNode = elem.childNodes[i];
+if (childNode.nodeType == Strophe.ElementType.NORMAL &&
+(!elemName || this.isTagEqual(childNode, elemName))) {
+func(childNode);
+}
+}
+},
+/** Function: isTagEqual
+*  Compare an element's tag name with a string.
+*
+*  This function is case insensitive.
+*
+*  Parameters:
+*    (XMLElement) el - A DOM element.
+*    (String) name - The element name.
+*
+*  Returns:
+*    true if the element's tag name matches _el_, and false
+*    otherwise.
+*/
+isTagEqual: function (el, name)
+{
+return el.tagName.toLowerCase() == name.toLowerCase();
+},
+/** PrivateVariable: _xmlGenerator
+*  _Private_ variable that caches a DOM document to
+*  generate elements.
+*/
+_xmlGenerator: null,
+/** PrivateFunction: _makeGenerator
+*  _Private_ function that creates a dummy XML DOM document to serve as
+*  an element and text node generator.
+*/
+_makeGenerator: function () {
+var doc;
+if (window.ActiveXObject) {
+doc = new ActiveXObject("Microsoft.XMLDOM");
+doc.appendChild(doc.createElement('strophe'));
+} else {
+doc = document.implementation
+.createDocument('jabber:client', 'strophe', null);
+}
+return doc;
+},
+/** Function: xmlElement
+*  Create an XML DOM element.
+*
+*  This function creates an XML DOM element correctly across all
+*  implementations. Specifically the Microsoft implementation of
+*  document.createElement makes DOM elements with 43+ default attributes
+*  unless elements are created with the ActiveX object Microsoft.XMLDOM.
+*
+*  Most DOMs force element names to lowercase, so we use the
+*  _realname attribute on the created element to store the case
+*  sensitive name.  This is required to generate proper XML for
+*  things like vCard avatars (XEP 153).  This attribute is stripped
+*  out before being sent over the wire or serialized, but you may
+*  notice it during debugging.
+*
+*  Parameters:
+*    (String) name - The name for the element.
+*    (Array) attrs - An optional array of key/value pairs to use as
+*      element attributes in the following format [['key1', 'value1'],
+*      ['key2', 'value2']]
+*    (String) text - The text child data for the element.
+*
+*  Returns:
+*    A new XML DOM element.
+*/
+xmlElement: function (name)
+{
+if (!name) { return null; }
+var node = null;
+if (!Strophe._xmlGenerator) {
+Strophe._xmlGenerator = Strophe._makeGenerator();
+}
+node = Strophe._xmlGenerator.createElement(name);
+// FIXME: this should throw errors if args are the wrong type or
+// there are more than two optional args
+var a, i, k;
+for (a = 1; a < arguments.length; a++) {
+if (!arguments[a]) { continue; }
+if (typeof(arguments[a]) == "string" ||
+typeof(arguments[a]) == "number") {
+node.appendChild(Strophe.xmlTextNode(arguments[a]));
+} else if (typeof(arguments[a]) == "object" &&
+typeof(arguments[a].sort) == "function") {
+for (i = 0; i < arguments[a].length; i++) {
+if (typeof(arguments[a][i]) == "object" &&
+typeof(arguments[a][i].sort) == "function") {
+node.setAttribute(arguments[a][i][0],
+arguments[a][i][1]);
+}
+}
+} else if (typeof(arguments[a]) == "object") {
+for (k in arguments[a]) {
+if (arguments[a].hasOwnProperty(k)) {
+node.setAttribute(k, arguments[a][k]);
+}
+}
+}
+}
+return node;
+},
+/*  Function: xmlescape
+*  Excapes invalid xml characters.
+*
+*  Parameters:
+*     (String) text - text to escape.
+*
+*	Returns:
+*      Escaped text.
+*/
+xmlescape: function(text)
+{
+	text = text.replace(/\&/g, "&amp;");
+text = text.replace(/</g,  "&lt;");
+text = text.replace(/>/g,  "&gt;");
+return text;
+},
+/** Function: xmlTextNode
+*  Creates an XML DOM text node.
+*
+*  Provides a cross implementation version of document.createTextNode.
+*
+*  Parameters:
+*    (String) text - The content of the text node.
+*
+*  Returns:
+*    A new XML DOM text node.
+*/
+xmlTextNode: function (text)
+{
+	//ensure text is escaped
+	text = Strophe.xmlescape(text);
+if (!Strophe._xmlGenerator) {
+Strophe._xmlGenerator = Strophe._makeGenerator();
+}
+return Strophe._xmlGenerator.createTextNode(text);
+},
+/** Function: getText
+*  Get the concatenation of all text children of an element.
+*
+*  Parameters:
+*    (XMLElement) elem - A DOM element.
+*
+*  Returns:
+*    A String with the concatenated text of all text element children.
+*/
+getText: function (elem)
+{
+if (!elem) { return null; }
+var str = "";
+if (elem.childNodes.length === 0 && elem.nodeType ==
+Strophe.ElementType.TEXT) {
+str += elem.nodeValue;
+}
+for (var i = 0; i < elem.childNodes.length; i++) {
+if (elem.childNodes[i].nodeType == Strophe.ElementType.TEXT) {
+str += elem.childNodes[i].nodeValue;
+}
+}
+return str;
+},
+/** Function: copyElement
+*  Copy an XML DOM element.
+*
+*  This function copies a DOM element and all its descendants and returns
+*  the new copy.
+*
+*  Parameters:
+*    (XMLElement) elem - A DOM element.
+*
+*  Returns:
+*    A new, copied DOM element tree.
+*/
+copyElement: function (elem)
+{
+var i, el;
+if (elem.nodeType == Strophe.ElementType.NORMAL) {
+el = Strophe.xmlElement(elem.tagName);
+for (i = 0; i < elem.attributes.length; i++) {
+el.setAttribute(elem.attributes[i].nodeName.toLowerCase(),
+elem.attributes[i].value);
+}
+for (i = 0; i < elem.childNodes.length; i++) {
+el.appendChild(Strophe.copyElement(elem.childNodes[i]));
+}
+} else if (elem.nodeType == Strophe.ElementType.TEXT) {
+el = Strophe.xmlTextNode(elem.nodeValue);
+}
+return el;
+},
+/** Function: escapeNode
+*  Escape the node part (also called local part) of a JID.
+*
+*  Parameters:
+*    (String) node - A node (or local part).
+*
+*  Returns:
+*    An escaped node (or local part).
+*/
+escapeNode: function (node)
+{
+return node.replace(/^\s+|\s+$/g, '')
+.replace(/\\/g,  "\\5c")
+.replace(/ /g,   "\\20")
+.replace(/\"/g,  "\\22")
+.replace(/\&/g,  "\\26")
+.replace(/\'/g,  "\\27")
+.replace(/\//g,  "\\2f")
+.replace(/:/g,   "\\3a")
+.replace(/</g,   "\\3c")
+.replace(/>/g,   "\\3e")
+.replace(/@/g,   "\\40");
+},
+/** Function: unescapeNode
+*  Unescape a node part (also called local part) of a JID.
+*
+*  Parameters:
+*    (String) node - A node (or local part).
+*
+*  Returns:
+*    An unescaped node (or local part).
+*/
+unescapeNode: function (node)
+{
+return node.replace(/\\20/g, " ")
+.replace(/\\22/g, '"')
+.replace(/\\26/g, "&")
+.replace(/\\27/g, "'")
+.replace(/\\2f/g, "/")
+.replace(/\\3a/g, ":")
+.replace(/\\3c/g, "<")
+.replace(/\\3e/g, ">")
+.replace(/\\40/g, "@")
+.replace(/\\5c/g, "\\");
+},
+/** Function: getNodeFromJid
+*  Get the node portion of a JID String.
+*
+*  Parameters:
+*    (String) jid - A JID.
+*
+*  Returns:
+*    A String containing the node.
+*/
+getNodeFromJid: function (jid)
+{
+if (jid.indexOf("@") < 0) { return null; }
+return jid.split("@")[0];
+},
+/** Function: getDomainFromJid
+*  Get the domain portion of a JID String.
+*
+*  Parameters:
+*    (String) jid - A JID.
+*
+*  Returns:
+*    A String containing the domain.
+*/
+getDomainFromJid: function (jid)
+{
+var bare = Strophe.getBareJidFromJid(jid);
+if (bare.indexOf("@") < 0) {
+return bare;
+} else {
+var parts = bare.split("@");
+parts.splice(0, 1);
+return parts.join('@');
+}
+},
+/** Function: getResourceFromJid
+*  Get the resource portion of a JID String.
+*
+*  Parameters:
+*    (String) jid - A JID.
+*
+*  Returns:
+*    A String containing the resource.
+*/
+getResourceFromJid: function (jid)
+{
+var s = jid.split("/");
+if (s.length < 2) { return null; }
+s.splice(0, 1);
+return s.join('/');
+},
+/** Function: getBareJidFromJid
+*  Get the bare JID from a JID String.
+*
+*  Parameters:
+*    (String) jid - A JID.
+*
+*  Returns:
+*    A String containing the bare JID.
+*/
+getBareJidFromJid: function (jid)
+{
+return jid.split("/")[0];
+},
+/** Function: log
+*  User overrideable logging function.
+*
+*  This function is called whenever the Strophe library calls any
+*  of the logging functions.  The default implementation of this
+*  function does nothing.  If client code wishes to handle the logging
+*  messages, it should override this with
+*  > Strophe.log = function (level, msg) {
+*  >   (user code here)
+*  > };
+*
+*  Please note that data sent and received over the wire is logged
+*  via Strophe.Connection.rawInput() and Strophe.Connection.rawOutput().
+*
+*  The different levels and their meanings are
+*
+*    DEBUG - Messages useful for debugging purposes.
+*    INFO - Informational messages.  This is mostly information like
+*      'disconnect was called' or 'SASL auth succeeded'.
+*    WARN - Warnings about potential problems.  This is mostly used
+*      to report transient connection errors like request timeouts.
+*    ERROR - Some error occurred.
+*    FATAL - A non-recoverable fatal error occurred.
+*
+*  Parameters:
+*    (Integer) level - The log level of the log message.  This will
+*      be one of the values in Strophe.LogLevel.
+*    (String) msg - The log message.
+*/
+log: function (level, msg)
+{
+return;
+},
+/** Function: debug
+*  Log a message at the Strophe.LogLevel.DEBUG level.
+*
+*  Parameters:
+*    (String) msg - The log message.
+*/
+debug: function(msg)
+{
+this.log(this.LogLevel.DEBUG, msg);
+},
+/** Function: info
+*  Log a message at the Strophe.LogLevel.INFO level.
+*
+*  Parameters:
+*    (String) msg - The log message.
+*/
+info: function (msg)
+{
+this.log(this.LogLevel.INFO, msg);
+},
+/** Function: warn
+*  Log a message at the Strophe.LogLevel.WARN level.
+*
+*  Parameters:
+*    (String) msg - The log message.
+*/
+warn: function (msg)
+{
+this.log(this.LogLevel.WARN, msg);
+},
+/** Function: error
+*  Log a message at the Strophe.LogLevel.ERROR level.
+*
+*  Parameters:
+*    (String) msg - The log message.
+*/
+error: function (msg)
+{
+this.log(this.LogLevel.ERROR, msg);
+},
+/** Function: fatal
+*  Log a message at the Strophe.LogLevel.FATAL level.
+*
+*  Parameters:
+*    (String) msg - The log message.
+*/
+fatal: function (msg)
+{
+this.log(this.LogLevel.FATAL, msg);
+},
+/** Function: serialize
+*  Render a DOM element and all descendants to a String.
+*
+*  Parameters:
+*    (XMLElement) elem - A DOM element.
+*
+*  Returns:
+*    The serialized element tree as a String.
+*/
+serialize: function (elem)
+{
+var result;
+if (!elem) { return null; }
+if (typeof(elem.tree) === "function") {
+elem = elem.tree();
+}
+var nodeName = elem.nodeName;
+var i, child;
+if (elem.getAttribute("_realname")) {
+nodeName = elem.getAttribute("_realname");
+}
+result = "<" + nodeName;
+for (i = 0; i < elem.attributes.length; i++) {
+if(elem.attributes[i].nodeName != "_realname") {
+result += " " + elem.attributes[i].nodeName.toLowerCase() +
+"='" + elem.attributes[i].value
+.replace("&", "&amp;")
+.replace("'", "&apos;")
+.replace("<", "&lt;") + "'";
+}
+}
+if (elem.childNodes.length > 0) {
+result += ">";
+for (i = 0; i < elem.childNodes.length; i++) {
+child = elem.childNodes[i];
+if (child.nodeType == Strophe.ElementType.NORMAL) {
+// normal element, so recurse
+result += Strophe.serialize(child);
+} else if (child.nodeType == Strophe.ElementType.TEXT) {
+// text element
+result += child.nodeValue;
+}
+}
+result += "</" + nodeName + ">";
+} else {
+result += "/>";
+}
+return result;
+},
+/** PrivateVariable: _requestId
+*  _Private_ variable that keeps track of the request ids for
+*  connections.
+*/
+_requestId: 0,
+/** PrivateVariable: Strophe.connectionPlugins
+*  _Private_ variable Used to store plugin names that need
+*  initialization on Strophe.Connection construction.
+*/
+_connectionPlugins: {},
+/** Function: addConnectionPlugin
+*  Extends the Strophe.Connection object with the given plugin.
+*
+*  Paramaters:
+*    (String) name - The name of the extension.
+*    (Object) ptype - The plugin's prototype.
+*/
+addConnectionPlugin: function (name, ptype)
+{
+Strophe._connectionPlugins[name] = ptype;
+}
+};
+/** Class: Strophe.Builder
+*  XML DOM builder.
+*
+*  This object provides an interface similar to JQuery but for building
+*  DOM element easily and rapidly.  All the functions except for toString()
+*  and tree() return the object, so calls can be chained.  Here's an
+*  example using the $iq() builder helper.
+*  > $iq({to: 'you': from: 'me': type: 'get', id: '1'})
+*  >     .c('query', {xmlns: 'strophe:example'})
+*  >     .c('example')
+*  >     .toString()
+*  The above generates this XML fragment
+*  > <iq to='you' from='me' type='get' id='1'>
+*  >   <query xmlns='strophe:example'>
+*  >     <example/>
+*  >   </query>
+*  > </iq>
+*  The corresponding DOM manipulations to get a similar fragment would be
+*  a lot more tedious and probably involve several helper variables.
+*
+*  Since adding children makes new operations operate on the child, up()
+*  is provided to traverse up the tree.  To add two children, do
+*  > builder.c('child1', ...).up().c('child2', ...)
+*  The next operation on the Builder will be relative to the second child.
+*/
+/** Constructor: Strophe.Builder
+*  Create a Strophe.Builder object.
+*
+*  The attributes should be passed in object notation.  For example
+*  > var b = new Builder('message', {to: 'you', from: 'me'});
+*  or
+*  > var b = new Builder('messsage', {'xml:lang': 'en'});
+*
+*  Parameters:
+*    (String) name - The name of the root element.
+*    (Object) attrs - The attributes for the root element in object notation.
+*
+*  Returns:
+*    A new Strophe.Builder.
+*/
+Strophe.Builder = function (name, attrs)
+{
+// Set correct namespace for jabber:client elements
+if (name == "presence" || name == "message" || name == "iq") {
+if (attrs && !attrs.xmlns) {
+attrs.xmlns = Strophe.NS.CLIENT;
+} else if (!attrs) {
+attrs = {xmlns: Strophe.NS.CLIENT};
+}
+}
+// Holds the tree being built.
+this.nodeTree = Strophe.xmlElement(name, attrs);
+// Points to the current operation node.
+this.node = this.nodeTree;
+};
+Strophe.Builder.prototype = {
+/** Function: tree
+*  Return the DOM tree.
+*
+*  This function returns the current DOM tree as an element object.  This
+*  is suitable for passing to functions like Strophe.Connection.send().
+*
+*  Returns:
+*    The DOM tree as a element object.
+*/
+tree: function ()
+{
+return this.nodeTree;
+},
+/** Function: toString
+*  Serialize the DOM tree to a String.
+*
+*  This function returns a string serialization of the current DOM
+*  tree.  It is often used internally to pass data to a
+*  Strophe.Request object.
+*
+*  Returns:
+*    The serialized DOM tree in a String.
+*/
+toString: function ()
+{
+return Strophe.serialize(this.nodeTree);
+},
+/** Function: up
+*  Make the current parent element the new current element.
+*
+*  This function is often used after c() to traverse back up the tree.
+*  For example, to add two children to the same element
+*  > builder.c('child1', {}).up().c('child2', {});
+*
+*  Returns:
+*    The Stophe.Builder object.
+*/
+up: function ()
+{
+this.node = this.node.parentNode;
+return this;
+},
+/** Function: attrs
+*  Add or modify attributes of the current element.
+*
+*  The attributes should be passed in object notation.  This function
+*  does not move the current element pointer.
+*
+*  Parameters:
+*    (Object) moreattrs - The attributes to add/modify in object notation.
+*
+*  Returns:
+*    The Strophe.Builder object.
+*/
+attrs: function (moreattrs)
+{
+for (var k in moreattrs) {
+if (moreattrs.hasOwnProperty(k)) {
+this.node.setAttribute(k, moreattrs[k]);
+}
+}
+return this;
+},
+/** Function: c
+*  Add a child to the current element and make it the new current
+*  element.
+*
+*  This function moves the current element pointer to the child.  If you
+*  need to add another child, it is necessary to use up() to go back
+*  to the parent in the tree.
+*
+*  Parameters:
+*    (String) name - The name of the child.
+*    (Object) attrs - The attributes of the child in object notation.
+*
+*  Returns:
+*    The Strophe.Builder object.
+*/
+c: function (name, attrs)
+{
+var child = Strophe.xmlElement(name, attrs);
+this.node.appendChild(child);
+this.node = child;
+return this;
+},
+/** Function: cnode
+*  Add a child to the current element and make it the new current
+*  element.
+*
+*  This function is the same as c() except that instead of using a
+*  name and an attributes object to create the child it uses an
+*  existing DOM element object.
+*
+*  Parameters:
+*    (XMLElement) elem - A DOM element.
+*
+*  Returns:
+*    The Strophe.Builder object.
+*/
+cnode: function (elem)
+{
+this.node.appendChild(elem);
+this.node = elem;
+return this;
+},
+/** Function: t
+*  Add a child text element.
+*
+*  This *does not* make the child the new current element since there
+*  are no children of text elements.
+*
+*  Parameters:
+*    (String) text - The text data to append to the current element.
+*
+*  Returns:
+*    The Strophe.Builder object.
+*/
+t: function (text)
+{
+var child = Strophe.xmlTextNode(text);
+this.node.appendChild(child);
+return this;
+}
+};
+/** PrivateClass: Strophe.Handler
+*  _Private_ helper class for managing stanza handlers.
+*
+*  A Strophe.Handler encapsulates a user provided callback function to be
+*  executed when matching stanzas are received by the connection.
+*  Handlers can be either one-off or persistant depending on their
+*  return value. Returning true will cause a Handler to remain active, and
+*  returning false will remove the Handler.
+*
+*  Users will not use Strophe.Handler objects directly, but instead they
+*  will use Strophe.Connection.addHandler() and
+*  Strophe.Connection.deleteHandler().
+*/
+/** PrivateConstructor: Strophe.Handler
+*  Create and initialize a new Strophe.Handler.
+*
+*  Parameters:
+*    (Function) handler - A function to be executed when the handler is run.
+*    (String) ns - The namespace to match.
+*    (String) name - The element name to match.
+*    (String) type - The element type to match.
+*    (String) id - The element id attribute to match.
+*    (String) from - The element from attribute to match.
+*    (Object) options - Handler options
+*
+*  Returns:
+*    A new Strophe.Handler object.
+*/
+Strophe.Handler = function (handler, ns, name, type, id, from, options)
+{
+this.handler = handler;
+this.ns = ns;
+this.name = name;
+this.type = type;
+this.id = id;
+this.options = options || {matchbare: false};
+// default matchBare to false if undefined
+if (!this.options.matchBare) {
+this.options.matchBare = false;
+}
+if (this.options.matchBare) {
+this.from = Strophe.getBareJidFromJid(from);
+} else {
+this.from = from;
+}
+// whether the handler is a user handler or a system handler
+this.user = true;
+};
+Strophe.Handler.prototype = {
+/** PrivateFunction: isMatch
+*  Tests if a stanza matches the Strophe.Handler.
+*
+*  Parameters:
+*    (XMLElement) elem - The XML element to test.
+*
+*  Returns:
+*    true if the stanza matches and false otherwise.
+*/
+isMatch: function (elem)
+{
+var nsMatch;
+var from = null;
+if (this.options.matchBare) {
+from = Strophe.getBareJidFromJid(elem.getAttribute('from'));
+} else {
+from = elem.getAttribute('from');
+}
+nsMatch = false;
+if (!this.ns) {
+nsMatch = true;
+} else {
+var self = this;
+Strophe.forEachChild(elem, null, function (elem) {
+if (elem.getAttribute("xmlns") == self.ns) {
+nsMatch = true;
+}
+});
+nsMatch = nsMatch || elem.getAttribute("xmlns") == this.ns;
+}
+if (nsMatch &&
+(!this.name || Strophe.isTagEqual(elem, this.name)) &&
+(!this.type || elem.getAttribute("type") === this.type) &&
+(!this.id || elem.getAttribute("id") === this.id) &&
+(!this.from || from === this.from)) {
+return true;
+}
+return false;
+},
+/** PrivateFunction: run
+*  Run the callback on a matching stanza.
+*
+*  Parameters:
+*    (XMLElement) elem - The DOM element that triggered the
+*      Strophe.Handler.
+*
+*  Returns:
+*    A boolean indicating if the handler should remain active.
+*/
+run: function (elem)
+{
+var result = null;
+try {
+result = this.handler(elem);
+} catch (e) {
+if (e.sourceURL) {
+Strophe.fatal("error: " + this.handler +
+" " + e.sourceURL + ":" +
+e.line + " - " + e.name + ": " + e.message);
+} else if (e.fileName) {
+if (typeof(console) != "undefined") {
+console.trace();
+console.error(this.handler, " - error - ", e, e.message);
+}
+Strophe.fatal("error: " + this.handler + " " +
+e.fileName + ":" + e.lineNumber + " - " +
+e.name + ": " + e.message);
+} else {
+Strophe.fatal("error: " + this.handler);
+}
+throw e;
+}
+return result;
+},
+/** PrivateFunction: toString
+*  Get a String representation of the Strophe.Handler object.
+*
+*  Returns:
+*    A String.
+*/
+toString: function ()
+{
+return "{Handler: " + this.handler + "(" + this.name + "," +
+this.id + "," + this.ns + ")}";
+}
+};
+/** PrivateClass: Strophe.TimedHandler
+*  _Private_ helper class for managing timed handlers.
+*
+*  A Strophe.TimedHandler encapsulates a user provided callback that
+*  should be called after a certain period of time or at regular
+*  intervals.  The return value of the callback determines whether the
+*  Strophe.TimedHandler will continue to fire.
+*
+*  Users will not use Strophe.TimedHandler objects directly, but instead
+*  they will use Strophe.Connection.addTimedHandler() and
+*  Strophe.Connection.deleteTimedHandler().
+*/
+/** PrivateConstructor: Strophe.TimedHandler
+*  Create and initialize a new Strophe.TimedHandler object.
+*
+*  Parameters:
+*    (Integer) period - The number of milliseconds to wait before the
+*      handler is called.
+*    (Function) handler - The callback to run when the handler fires.  This
+*      function should take no arguments.
+*
+*  Returns:
+*    A new Strophe.TimedHandler object.
+*/
+Strophe.TimedHandler = function (period, handler)
+{
+this.period = period;
+this.handler = handler;
+this.lastCalled = new Date().getTime();
+this.user = true;
+};
+Strophe.TimedHandler.prototype = {
+/** PrivateFunction: run
+*  Run the callback for the Strophe.TimedHandler.
+*
+*  Returns:
+*    true if the Strophe.TimedHandler should be called again, and false
+*      otherwise.
+*/
+run: function ()
+{
+this.lastCalled = new Date().getTime();
+return this.handler();
+},
+/** PrivateFunction: reset
+*  Reset the last called time for the Strophe.TimedHandler.
+*/
+reset: function ()
+{
+this.lastCalled = new Date().getTime();
+},
+/** PrivateFunction: toString
+*  Get a string representation of the Strophe.TimedHandler object.
+*
+*  Returns:
+*    The string representation.
+*/
+toString: function ()
+{
+return "{TimedHandler: " + this.handler + "(" + this.period +")}";
+}
+};
+/** PrivateClass: Strophe.Request
+*  _Private_ helper class that provides a cross implementation abstraction
+*  for a BOSH related XMLHttpRequest.
+*
+*  The Strophe.Request class is used internally to encapsulate BOSH request
+*  information.  It is not meant to be used from user's code.
+*/
+/** PrivateConstructor: Strophe.Request
+*  Create and initialize a new Strophe.Request object.
+*
+*  Parameters:
+*    (XMLElement) elem - The XML data to be sent in the request.
+*    (Function) func - The function that will be called when the
+*      XMLHttpRequest readyState changes.
+*    (Integer) rid - The BOSH rid attribute associated with this request.
+*    (Integer) sends - The number of times this same request has been
+*      sent.
+*/
+Strophe.Request = function (elem, func, rid, sends)
+{
+this.id = ++Strophe._requestId;
+this.xmlData = elem;
+this.data = Strophe.serialize(elem);
+// save original function in case we need to make a new request
+// from this one.
+this.origFunc = func;
+this.func = func;
+this.rid = rid;
+this.date = NaN;
+this.sends = sends || 0;
+this.abort = false;
+this.dead = null;
+this.age = function () {
+if (!this.date) { return 0; }
+var now = new Date();
+return (now - this.date) / 1000;
+};
+this.timeDead = function () {
+if (!this.dead) { return 0; }
+var now = new Date();
+return (now - this.dead) / 1000;
+};
+this.xhr = this._newXHR();
+};
+Strophe.Request.prototype = {
+/** PrivateFunction: getResponse
+*  Get a response from the underlying XMLHttpRequest.
+*
+*  This function attempts to get a response from the request and checks
+*  for errors.
+*
+*  Throws:
+*    "parsererror" - A parser error occured.
+*
+*  Returns:
+*    The DOM element tree of the response.
+*/
+getResponse: function ()
+{
+var node = null;
+if (this.xhr.responseXML && this.xhr.responseXML.documentElement) {
+node = this.xhr.responseXML.documentElement;
+if (node.tagName == "parsererror") {
+Strophe.error("invalid response received");
+Strophe.error("responseText: " + this.xhr.responseText);
+Strophe.error("responseXML: " +
+Strophe.serialize(this.xhr.responseXML));
+throw "parsererror";
+}
+} else if (this.xhr.responseText) {
+Strophe.error("invalid response received");
+Strophe.error("responseText: " + this.xhr.responseText);
+Strophe.error("responseXML: " +
+Strophe.serialize(this.xhr.responseXML));
+}
+return node;
+},
+/** PrivateFunction: _newXHR
+*  _Private_ helper function to create XMLHttpRequests.
+*
+*  This function creates XMLHttpRequests across all implementations.
+*
+*  Returns:
+*    A new XMLHttpRequest.
+*/
+_newXHR: function ()
+{
+var xhr = null;
+if (window.XMLHttpRequest) {
+xhr = new XMLHttpRequest();
+if (xhr.overrideMimeType) {
+xhr.overrideMimeType("text/xml");
+}
+} else if (window.ActiveXObject) {
+xhr = new ActiveXObject("Microsoft.XMLHTTP");
+}
+xhr.onreadystatechange = this.func.prependArg(this);
+return xhr;
+}
+};
+/** Class: Strophe.Connection
+*  XMPP Connection manager.
+*
+*  Thie class is the main part of Strophe.  It manages a BOSH connection
+*  to an XMPP server and dispatches events to the user callbacks as
+*  data arrives.  It supports SASL PLAIN, SASL DIGEST-MD5, and legacy
+*  authentication.
+*
+*  After creating a Strophe.Connection object, the user will typically
+*  call connect() with a user supplied callback to handle connection level
+*  events like authentication failure, disconnection, or connection
+*  complete.
+*
+*  The user will also have several event handlers defined by using
+*  addHandler() and addTimedHandler().  These will allow the user code to
+*  respond to interesting stanzas or do something periodically with the
+*  connection.  These handlers will be active once authentication is
+*  finished.
+*
+*  To send data to the connection, use send().
+*/
+/** Constructor: Strophe.Connection
+*  Create and initialize a Strophe.Connection object.
+*
+*  Parameters:
+*    (String) service - The BOSH service URL.
+*
+*  Returns:
+*    A new Strophe.Connection object.
+*/
+Strophe.Connection = function (service)
+{
+/* The path to the httpbind service. */
+this.service = service;
+/* The connected JID. */
+this.jid = "";
+/* request id for body tags */
+this.rid = Math.floor(Math.random() * 4294967295);
+/* The current session ID. */
+this.sid = null;
+this.streamId = null;
+// SASL
+this.do_session = false;
+this.do_bind = false;
+// handler lists
+this.timedHandlers = [];
+this.handlers = [];
+this.removeTimeds = [];
+this.removeHandlers = [];
+this.addTimeds = [];
+this.addHandlers = [];
+this._idleTimeout = null;
+this._disconnectTimeout = null;
+this.authenticated = false;
+this.disconnecting = false;
+this.connected = false;
+this.errors = 0;
+this.paused = false;
+// default BOSH values
+this.hold = 1;
+this.wait = 60;
+this.window = 5;
+this._data = [];
+this._requests = [];
+this._uniqueId = Math.round(Math.random() * 10000);
+this._sasl_success_handler = null;
+this._sasl_failure_handler = null;
+this._sasl_challenge_handler = null;
+// setup onIdle callback every 1/10th of a second
+this._idleTimeout = setTimeout(this._onIdle.bind(this), 100);
+// initialize plugins
+for (var k in Strophe._connectionPlugins) {
+if (Strophe._connectionPlugins.hasOwnProperty(k)) {
+	    var ptype = Strophe._connectionPlugins[k];
+// jslint complaints about the below line, but this is fine
+var F = function () {};
+F.prototype = ptype;
+this[k] = new F();
+	    this[k].init(this);
+}
+}
+};
+Strophe.Connection.prototype = {
+/** Function: reset
+*  Reset the connection.
+*
+*  This function should be called after a connection is disconnected
+*  before that connection is reused.
+*/
+reset: function ()
+{
+this.rid = Math.floor(Math.random() * 4294967295);
+this.sid = null;
+this.streamId = null;
+// SASL
+this.do_session = false;
+this.do_bind = false;
+// handler lists
+this.timedHandlers = [];
+this.handlers = [];
+this.removeTimeds = [];
+this.removeHandlers = [];
+this.addTimeds = [];
+this.addHandlers = [];
+this.authenticated = false;
+this.disconnecting = false;
+this.connected = false;
+this.errors = 0;
+this._requests = [];
+this._uniqueId = Math.round(Math.random()*10000);
+},
+/** Function: pause
+*  Pause the request manager.
+*
+*  This will prevent Strophe from sending any more requests to the
+*  server.  This is very useful for temporarily pausing while a lot
+*  of send() calls are happening quickly.  This causes Strophe to
+*  send the data in a single request, saving many request trips.
+*/
+pause: function ()
+{
+this.paused = true;
+},
+/** Function: resume
+*  Resume the request manager.
+*
+*  This resumes after pause() has been called.
+*/
+resume: function ()
+{
+this.paused = false;
+},
+/** Function: getUniqueId
+*  Generate a unique ID for use in <iq/> elements.
+*
+*  All <iq/> stanzas are required to have unique id attributes.  This
+*  function makes creating these easy.  Each connection instance has
+*  a counter which starts from zero, and the value of this counter
+*  plus a colon followed by the suffix becomes the unique id. If no
+*  suffix is supplied, the counter is used as the unique id.
+*
+*  Suffixes are used to make debugging easier when reading the stream
+*  data, and their use is recommended.  The counter resets to 0 for
+*  every new connection for the same reason.  For connections to the
+*  same server that authenticate the same way, all the ids should be
+*  the same, which makes it easy to see changes.  This is useful for
+*  automated testing as well.
+*
+*  Parameters:
+*    (String) suffix - A optional suffix to append to the id.
+*
+*  Returns:
+*    A unique string to be used for the id attribute.
+*/
+getUniqueId: function (suffix)
+{
+if (typeof(suffix) == "string" || typeof(suffix) == "number") {
+return ++this._uniqueId + ":" + suffix;
+} else {
+return ++this._uniqueId + "";
+}
+},
+/** Function: connect
+*  Starts the connection process.
+*
+*  As the connection process proceeds, the user supplied callback will
+*  be triggered multiple times with status updates.  The callback
+*  should take two arguments - the status code and the error condition.
+*
+*  The status code will be one of the values in the Strophe.Status
+*  constants.  The error condition will be one of the conditions
+*  defined in RFC 3920 or the condition 'strophe-parsererror'.
+*
+*  Please see XEP 124 for a more detailed explanation of the optional
+*  parameters below.
+*
+*  Parameters:
+*    (String) jid - The user's JID.  This may be a bare JID,
+*      or a full JID.  If a node is not supplied, SASL ANONYMOUS
+*      authentication will be attempted.
+*    (String) pass - The user's password.
+*    (Function) callback The connect callback function.
+*    (Integer) wait - The optional HTTPBIND wait value.  This is the
+*      time the server will wait before returning an empty result for
+*      a request.  The default setting of 60 seconds is recommended.
+*      Other settings will require tweaks to the Strophe.TIMEOUT value.
+*    (Integer) hold - The optional HTTPBIND hold value.  This is the
+*      number of connections the server will hold at one time.  This
+*      should almost always be set to 1 (the default).
+*/
+connect: function (jid, pass, callback, wait, hold)
+{
+this.jid = jid;
+this.pass = pass;
+this.connect_callback = callback;
+this.disconnecting = false;
+this.connected = false;
+this.authenticated = false;
+this.errors = 0;
+this.wait = wait || this.wait;
+this.hold = hold || this.hold;
+// parse jid for domain and resource
+this.domain = Strophe.getDomainFromJid(this.jid);
+// build the body tag
+var body = this._buildBody().attrs({
+to: this.domain,
+"xml:lang": "en",
+wait: this.wait,
+hold: this.hold,
+content: "text/xml; charset=utf-8",
+ver: "1.6",
+"xmpp:version": "1.0",
+"xmlns:xmpp": Strophe.NS.BOSH
+});
+this._changeConnectStatus(Strophe.Status.CONNECTING, null);
+this._requests.push(
+new Strophe.Request(body.tree(),
+this._onRequestStateChange.bind(this)
+.prependArg(this._connect_cb.bind(this)),
+body.tree().getAttribute("rid")));
+this._throttledRequestHandler();
+},
+/** Function: attach
+*  Attach to an already created and authenticated BOSH session.
+*
+*  This function is provided to allow Strophe to attach to BOSH
+*  sessions which have been created externally, perhaps by a Web
+*  application.  This is often used to support auto-login type features
+*  without putting user credentials into the page.
+*
+*  Parameters:
+*    (String) jid - The full JID that is bound by the session.
+*    (String) sid - The SID of the BOSH session.
+*    (String) rid - The current RID of the BOSH session.  This RID
+*      will be used by the next request.
+*    (Function) callback The connect callback function.
+*    (Integer) wait - The optional HTTPBIND wait value.  This is the
+*      time the server will wait before returning an empty result for
+*      a request.  The default setting of 60 seconds is recommended.
+*      Other settings will require tweaks to the Strophe.TIMEOUT value.
+*    (Integer) hold - The optional HTTPBIND hold value.  This is the
+*      number of connections the server will hold at one time.  This
+*      should almost always be set to 1 (the default).
+*    (Integer) wind - The optional HTTBIND window value.  This is the
+*      allowed range of request ids that are valid.  The default is 5.
+*/
+attach: function (jid, sid, rid, callback, wait, hold, wind)
+{
+this.jid = jid;
+this.sid = sid;
+this.rid = rid;
+this.connect_callback = callback;
+this.domain = Strophe.getDomainFromJid(this.jid);
+this.authenticated = true;
+this.connected = true;
+this.wait = wait || this.wait;
+this.hold = hold || this.hold;
+this.window = wind || this.window;
+this._changeConnectStatus(Strophe.Status.ATTACHED, null);
+},
+/** Function: xmlInput
+*  User overrideable function that receives XML data coming into the
+*  connection.
+*
+*  The default function does nothing.  User code can override this with
+*  > Strophe.Connection.xmlInput = function (elem) {
+*  >   (user code)
+*  > };
+*
+*  Parameters:
+*    (XMLElement) elem - The XML data received by the connection.
+*/
+xmlInput: function (elem)
+{
+return;
+},
+/** Function: xmlOutput
+*  User overrideable function that receives XML data sent to the
+*  connection.
+*
+*  The default function does nothing.  User code can override this with
+*  > Strophe.Connection.xmlOutput = function (elem) {
+*  >   (user code)
+*  > };
+*
+*  Parameters:
+*    (XMLElement) elem - The XMLdata sent by the connection.
+*/
+xmlOutput: function (elem)
+{
+return;
+},
+/** Function: rawInput
+*  User overrideable function that receives raw data coming into the
+*  connection.
+*
+*  The default function does nothing.  User code can override this with
+*  > Strophe.Connection.rawInput = function (data) {
+*  >   (user code)
+*  > };
+*
+*  Parameters:
+*    (String) data - The data received by the connection.
+*/
+rawInput: function (data)
+{
+return;
+},
+/** Function: rawOutput
+*  User overrideable function that receives raw data sent to the
+*  connection.
+*
+*  The default function does nothing.  User code can override this with
+*  > Strophe.Connection.rawOutput = function (data) {
+*  >   (user code)
+*  > };
+*
+*  Parameters:
+*    (String) data - The data sent by the connection.
+*/
+rawOutput: function (data)
+{
+return;
+},
+/** Function: send
+*  Send a stanza.
+*
+*  This function is called to push data onto the send queue to
+*  go out over the wire.  Whenever a request is sent to the BOSH
+*  server, all pending data is sent and the queue is flushed.
+*
+*  Parameters:
+*    (XMLElement |
+*     [XMLElement] |
+*     Strophe.Builder) elem - The stanza to send.
+*/
+send: function (elem)
+{
+if (elem === null) { return ; }
+if (typeof(elem.sort) === "function") {
+for (var i = 0; i < elem.length; i++) {
+this._queueData(elem[i]);
+}
+} else if (typeof(elem.tree) === "function") {
+this._queueData(elem.tree());
+} else {
+this._queueData(elem);
+}
+this._throttledRequestHandler();
+clearTimeout(this._idleTimeout);
+this._idleTimeout = setTimeout(this._onIdle.bind(this), 100);
+},
+/** Function: flush
+*  Immediately send any pending outgoing data.
+*
+*  Normally send() queues outgoing data until the next idle period
+*  (100ms), which optimizes network use in the common cases when
+*  several send()s are called in succession. flush() can be used to
+*  immediately send all pending data.
+*/
+flush: function ()
+{
+// cancel the pending idle period and run the idle function
+// immediately
+clearTimeout(this._idleTimeout);
+this._onIdle();
+},
+/** Function: sendIQ
+*  Helper function to send IQ stanzas.
+*
+*  Parameters:
+*    (XMLElement) elem - The stanza to send.
+*    (Function) callback - The callback function for a successful request.
+*    (Function) errback - The callback function for a failed or timed
+*      out request.  On timeout, the stanza will be null.
+*    (Integer) timeout - The time specified in milliseconds for a
+*      timeout to occur.
+*
+*  Returns:
+*    The id used to send the IQ.
+*/
+sendIQ: function(elem, callback, errback, timeout) {
+var timeoutHandler = null;
+var that = this;
+if (typeof(elem.tree) === "function") {
+elem = elem.tree();
+}
+	var id = elem.getAttribute('id');
+	// inject id if not found
+	if (!id) {
+	    id = this.getUniqueId("sendIQ");
+	    elem.setAttribute("id", id);
+	}
+	var handler = this.addHandler(function (stanza) {
+	    // remove timeout handler if there is one
+if (timeoutHandler) {
+that.deleteTimedHandler(timeoutHandler);
+}
+var iqtype = stanza.getAttribute('type');
+	    if (iqtype === 'result') {
+		if (callback) {
+callback(stanza);
+}
+	    } else if (iqtype === 'error') {
+		if (errback) {
+errback(stanza);
+}
+	    } else {
+throw {
+name: "StropheError",
+message: "Got bad IQ type of " + iqtype
+};
+}
+	}, null, 'iq', null, id);
+	// if timeout specified, setup timeout handler.
+	if (timeout) {
+	    timeoutHandler = this.addTimedHandler(timeout, function () {
+// get rid of normal handler
+that.deleteHandler(handler);
+	        // call errback on timeout with null stanza
+if (errback) {
+		    errback(null);
+}
+		return false;
+	    });
+	}
+	this.send(elem);
+	return id;
+},
+/** PrivateFunction: _queueData
+*  Queue outgoing data for later sending.  Also ensures that the data
+*  is a DOMElement.
+*/
+_queueData: function (element) {
+if (element === null ||
+!element.tagName ||
+!element.childNodes) {
+throw {
+name: "StropheError",
+message: "Cannot queue non-DOMElement."
+};
+}
+this._data.push(element);
+},
+/** PrivateFunction: _sendRestart
+*  Send an xmpp:restart stanza.
+*/
+_sendRestart: function ()
+{
+this._data.push("restart");
+this._throttledRequestHandler();
+clearTimeout(this._idleTimeout);
+this._idleTimeout = setTimeout(this._onIdle.bind(this), 100);
+},
+/** Function: addTimedHandler
+*  Add a timed handler to the connection.
+*
+*  This function adds a timed handler.  The provided handler will
+*  be called every period milliseconds until it returns false,
+*  the connection is terminated, or the handler is removed.  Handlers
+*  that wish to continue being invoked should return true.
+*
+*  Because of method binding it is necessary to save the result of
+*  this function if you wish to remove a handler with
+*  deleteTimedHandler().
+*
+*  Note that user handlers are not active until authentication is
+*  successful.
+*
+*  Parameters:
+*    (Integer) period - The period of the handler.
+*    (Function) handler - The callback function.
+*
+*  Returns:
+*    A reference to the handler that can be used to remove it.
+*/
+addTimedHandler: function (period, handler)
+{
+var thand = new Strophe.TimedHandler(period, handler);
+this.addTimeds.push(thand);
+return thand;
+},
+/** Function: deleteTimedHandler
+*  Delete a timed handler for a connection.
+*
+*  This function removes a timed handler from the connection.  The
+*  handRef parameter is *not* the function passed to addTimedHandler(),
+*  but is the reference returned from addTimedHandler().
+*
+*  Parameters:
+*    (Strophe.TimedHandler) handRef - The handler reference.
+*/
+deleteTimedHandler: function (handRef)
+{
+// this must be done in the Idle loop so that we don't change
+// the handlers during iteration
+this.removeTimeds.push(handRef);
+},
+/** Function: addHandler
+*  Add a stanza handler for the connection.
+*
+*  This function adds a stanza handler to the connection.  The
+*  handler callback will be called for any stanza that matches
+*  the parameters.  Note that if multiple parameters are supplied,
+*  they must all match for the handler to be invoked.
+*
+*  The handler will receive the stanza that triggered it as its argument.
+*  The handler should return true if it is to be invoked again;
+*  returning false will remove the handler after it returns.
+*
+*  As a convenience, the ns parameters applies to the top level element
+*  and also any of its immediate children.  This is primarily to make
+*  matching /iq/query elements easy.
+*
+*  The options argument contains handler matching flags that affect how
+*  matches are determined. Currently the only flag is matchBare (a
+*  boolean). When matchBare is true, the from parameter and the from
+*  attribute on the stanza will be matched as bare JIDs instead of
+*  full JIDs. To use this, pass {matchBare: true} as the value of
+*  options. The default value for matchBare is false.
+*
+*  The return value should be saved if you wish to remove the handler
+*  with deleteHandler().
+*
+*  Parameters:
+*    (Function) handler - The user callback.
+*    (String) ns - The namespace to match.
+*    (String) name - The stanza name to match.
+*    (String) type - The stanza type attribute to match.
+*    (String) id - The stanza id attribute to match.
+*    (String) from - The stanza from attribute to match.
+*    (String) options - The handler options
+*
+*  Returns:
+*    A reference to the handler that can be used to remove it.
+*/
+addHandler: function (handler, ns, name, type, id, from, options)
+{
+var hand = new Strophe.Handler(handler, ns, name, type, id, from, options);
+this.addHandlers.push(hand);
+return hand;
+},
+/** Function: deleteHandler
+*  Delete a stanza handler for a connection.
+*
+*  This function removes a stanza handler from the connection.  The
+*  handRef parameter is *not* the function passed to addHandler(),
+*  but is the reference returned from addHandler().
+*
+*  Parameters:
+*    (Strophe.Handler) handRef - The handler reference.
+*/
+deleteHandler: function (handRef)
+{
+// this must be done in the Idle loop so that we don't change
+// the handlers during iteration
+this.removeHandlers.push(handRef);
+},
+/** Function: disconnect
+*  Start the graceful disconnection process.
+*
+*  This function starts the disconnection process.  This process starts
+*  by sending unavailable presence and sending BOSH body of type
+*  terminate.  A timeout handler makes sure that disconnection happens
+*  even if the BOSH server does not respond.
+*
+*  The user supplied connection callback will be notified of the
+*  progress as this process happens.
+*
+*  Parameters:
+*    (String) reason - The reason the disconnect is occuring.
+*/
+disconnect: function (reason)
+{
+this._changeConnectStatus(Strophe.Status.DISCONNECTING, reason);
+Strophe.info("Disconnect was called because: " + reason);
+if (this.connected) {
+// setup timeout handler
+this._disconnectTimeout = this._addSysTimedHandler(
+3000, this._onDisconnectTimeout.bind(this));
+this._sendTerminate();
+}
+},
+/** PrivateFunction: _changeConnectStatus
+*  _Private_ helper function that makes sure plugins and the user's
+*  callback are notified of connection status changes.
+*
+*  Parameters:
+*    (Integer) status - the new connection status, one of the values
+*      in Strophe.Status
+*    (String) condition - the error condition or null
+*/
+_changeConnectStatus: function (status, condition)
+{
+// notify all plugins listening for status changes
+for (var k in Strophe._connectionPlugins) {
+if (Strophe._connectionPlugins.hasOwnProperty(k)) {
+var plugin = this[k];
+if (plugin.statusChanged) {
+try {
+plugin.statusChanged(status, condition);
+} catch (err) {
+Strophe.error("" + k + " plugin caused an exception " +
+"changing status: " + err);
+}
+}
+}
+}
+// notify the user's callback
+if (this.connect_callback) {
+try {
+this.connect_callback(status, condition);
+} catch (e) {
+Strophe.error("User connection callback caused an " +
+"exception: " + e);
+}
+}
+},
+/** PrivateFunction: _buildBody
+*  _Private_ helper function to generate the <body/> wrapper for BOSH.
+*
+*  Returns:
+*    A Strophe.Builder with a <body/> element.
+*/
+_buildBody: function ()
+{
+var bodyWrap = $build('body', {
+rid: this.rid++,
+xmlns: Strophe.NS.HTTPBIND
+});
+if (this.sid !== null) {
+bodyWrap.attrs({sid: this.sid});
+}
+return bodyWrap;
+},
+/** PrivateFunction: _removeRequest
+*  _Private_ function to remove a request from the queue.
+*
+*  Parameters:
+*    (Strophe.Request) req - The request to remove.
+*/
+_removeRequest: function (req)
+{
+Strophe.debug("removing request");
+var i;
+for (i = this._requests.length - 1; i >= 0; i--) {
+if (req == this._requests[i]) {
+this._requests.splice(i, 1);
+}
+}
+// IE6 fails on setting to null, so set to empty function
+req.xhr.onreadystatechange = function () {};
+this._throttledRequestHandler();
+},
+/** PrivateFunction: _restartRequest
+*  _Private_ function to restart a request that is presumed dead.
+*
+*  Parameters:
+*    (Integer) i - The index of the request in the queue.
+*/
+_restartRequest: function (i)
+{
+var req = this._requests[i];
+if (req.dead === null) {
+req.dead = new Date();
+}
+this._processRequest(i);
+},
+/** PrivateFunction: _processRequest
+*  _Private_ function to process a request in the queue.
+*
+*  This function takes requests off the queue and sends them and
+*  restarts dead requests.
+*
+*  Parameters:
+*    (Integer) i - The index of the request in the queue.
+*/
+_processRequest: function (i)
+{
+var req = this._requests[i];
+var reqStatus = -1;
+try {
+if (req.xhr.readyState == 4) {
+reqStatus = req.xhr.status;
+}
+} catch (e) {
+Strophe.error("caught an error in _requests[" + i +
+"], reqStatus: " + reqStatus);
+}
+if (typeof(reqStatus) == "undefined") {
+reqStatus = -1;
+}
+var time_elapsed = req.age();
+var primaryTimeout = (!isNaN(time_elapsed) &&
+time_elapsed > Math.floor(Strophe.TIMEOUT * this.wait));
+var secondaryTimeout = (req.dead !== null &&
+req.timeDead() > Math.floor(Strophe.SECONDARY_TIMEOUT * this.wait));
+var requestCompletedWithServerError = (req.xhr.readyState == 4 &&
+(reqStatus < 1 ||
+reqStatus >= 500));
+if (primaryTimeout || secondaryTimeout ||
+requestCompletedWithServerError) {
+if (secondaryTimeout) {
+Strophe.error("Request " +
+this._requests[i].id +
+" timed out (secondary), restarting");
+}
+req.abort = true;
+req.xhr.abort();
+// setting to null fails on IE6, so set to empty function
+req.xhr.onreadystatechange = function () {};
+this._requests[i] = new Strophe.Request(req.xmlData,
+req.origFunc,
+req.rid,
+req.sends);
+req = this._requests[i];
+}
+if (req.xhr.readyState === 0) {
+Strophe.debug("request id " + req.id +
+"." + req.sends + " posting");
+req.date = new Date();
+try {
+req.xhr.open("POST", this.service, true);
+} catch (e2) {
+Strophe.error("XHR open failed.");
+if (!this.connected) {
+this._changeConnectStatus(Strophe.Status.CONNFAIL,
+"bad-service");
+}
+this.disconnect();
+return;
+}
+// Fires the XHR request -- may be invoked immediately
+// or on a gradually expanding retry window for reconnects
+var sendFunc = function () {
+req.xhr.send(req.data);
+};
+// Implement progressive backoff for reconnects --
+// First retry (send == 1) should also be instantaneous
+if (req.sends > 1) {
+// Using a cube of the retry number creats a nicely
+// expanding retry window
+var backoff = Math.pow(req.sends, 3) * 1000;
+setTimeout(sendFunc, backoff);
+} else {
+sendFunc();
+}
+req.sends++;
+this.xmlOutput(req.xmlData);
+this.rawOutput(req.data);
+} else {
+Strophe.debug("_processRequest: " +
+(i === 0 ? "first" : "second") +
+" request has readyState of " +
+req.xhr.readyState);
+}
+},
+/** PrivateFunction: _throttledRequestHandler
+*  _Private_ function to throttle requests to the connection window.
+*
+*  This function makes sure we don't send requests so fast that the
+*  request ids overflow the connection window in the case that one
+*  request died.
+*/
+_throttledRequestHandler: function ()
+{
+if (!this._requests) {
+Strophe.debug("_throttledRequestHandler called with " +
+"undefined requests");
+} else {
+Strophe.debug("_throttledRequestHandler called with " +
+this._requests.length + " requests");
+}
+if (!this._requests || this._requests.length === 0) {
+return;
+}
+if (this._requests.length > 0) {
+this._processRequest(0);
+}
+if (this._requests.length > 1 &&
+Math.abs(this._requests[0].rid -
+this._requests[1].rid) < this.window - 1) {
+this._processRequest(1);
+}
+},
+/** PrivateFunction: _onRequestStateChange
+*  _Private_ handler for Strophe.Request state changes.
+*
+*  This function is called when the XMLHttpRequest readyState changes.
+*  It contains a lot of error handling logic for the many ways that
+*  requests can fail, and calls the request callback when requests
+*  succeed.
+*
+*  Parameters:
+*    (Function) func - The handler for the request.
+*    (Strophe.Request) req - The request that is changing readyState.
+*/
+_onRequestStateChange: function (func, req)
+{
+Strophe.debug("request id " + req.id +
+"." + req.sends + " state changed to " +
+req.xhr.readyState);
+if (req.abort) {
+req.abort = false;
+return;
+}
+// request complete
+var reqStatus;
+if (req.xhr.readyState == 4) {
+reqStatus = 0;
+try {
+reqStatus = req.xhr.status;
+} catch (e) {
+// ignore errors from undefined status attribute.  works
+// around a browser bug
+}
+if (typeof(reqStatus) == "undefined") {
+reqStatus = 0;
+}
+if (this.disconnecting) {
+if (reqStatus >= 400) {
+this._hitError(reqStatus);
+return;
+}
+}
+var reqIs0 = (this._requests[0] == req);
+var reqIs1 = (this._requests[1] == req);
+if ((reqStatus > 0 && reqStatus < 500) || req.sends > 5) {
+// remove from internal queue
+this._removeRequest(req);
+Strophe.debug("request id " +
+req.id +
+" should now be removed");
+}
+// request succeeded
+if (reqStatus == 200) {
+// if request 1 finished, or request 0 finished and request
+// 1 is over Strophe.SECONDARY_TIMEOUT seconds old, we need to
+// restart the other - both will be in the first spot, as the
+// completed request has been removed from the queue already
+if (reqIs1 ||
+(reqIs0 && this._requests.length > 0 &&
+this._requests[0].age() > Math.floor(Strophe.SECONDARY_TIMEOUT * this.wait))) {
+this._restartRequest(0);
+}
+// call handler
+Strophe.debug("request id " +
+req.id + "." +
+req.sends + " got 200");
+func(req);
+this.errors = 0;
+} else {
+Strophe.error("request id " +
+req.id + "." +
+req.sends + " error " + reqStatus +
+" happened");
+if (reqStatus === 0 ||
+(reqStatus >= 400 && reqStatus < 600) ||
+reqStatus >= 12000) {
+this._hitError(reqStatus);
+if (reqStatus >= 400 && reqStatus < 500) {
+this._changeConnectStatus(Strophe.Status.DISCONNECTING,
+null);
+this._doDisconnect();
+}
+}
+}
+if (!((reqStatus > 0 && reqStatus < 10000) ||
+req.sends > 5)) {
+this._throttledRequestHandler();
+}
+}
+},
+/** PrivateFunction: _hitError
+*  _Private_ function to handle the error count.
+*
+*  Requests are resent automatically until their error count reaches
+*  5.  Each time an error is encountered, this function is called to
+*  increment the count and disconnect if the count is too high.
+*
+*  Parameters:
+*    (Integer) reqStatus - The request status.
+*/
+_hitError: function (reqStatus)
+{
+this.errors++;
+Strophe.warn("request errored, status: " + reqStatus +
+", number of errors: " + this.errors);
+if (this.errors > 4) {
+this._onDisconnectTimeout();
+}
+},
+/** PrivateFunction: _doDisconnect
+*  _Private_ function to disconnect.
+*
+*  This is the last piece of the disconnection logic.  This resets the
+*  connection and alerts the user's connection callback.
+*/
+_doDisconnect: function ()
+{
+Strophe.info("_doDisconnect was called");
+this.authenticated = false;
+this.disconnecting = false;
+this.sid = null;
+this.streamId = null;
+this.rid = Math.floor(Math.random() * 4294967295);
+// tell the parent we disconnected
+if (this.connected) {
+this._changeConnectStatus(Strophe.Status.DISCONNECTED, null);
+this.connected = false;
+}
+// delete handlers
+this.handlers = [];
+this.timedHandlers = [];
+this.removeTimeds = [];
+this.removeHandlers = [];
+this.addTimeds = [];
+this.addHandlers = [];
+},
+/** PrivateFunction: _dataRecv
+*  _Private_ handler to processes incoming data from the the connection.
+*
+*  Except for _connect_cb handling the initial connection request,
+*  this function handles the incoming data for all requests.  This
+*  function also fires stanza handlers that match each incoming
+*  stanza.
+*
+*  Parameters:
+*    (Strophe.Request) req - The request that has data ready.
+*/
+_dataRecv: function (req)
+{
+try {
+var elem = req.getResponse();
+} catch (e) {
+if (e != "parsererror") { throw e; }
+this.disconnect("strophe-parsererror");
+}
+if (elem === null) { return; }
+this.xmlInput(elem);
+this.rawInput(Strophe.serialize(elem));
+// remove handlers scheduled for deletion
+var i, hand;
+while (this.removeHandlers.length > 0) {
+hand = this.removeHandlers.pop();
+i = this.handlers.indexOf(hand);
+if (i >= 0) {
+this.handlers.splice(i, 1);
+}
+}
+// add handlers scheduled for addition
+while (this.addHandlers.length > 0) {
+this.handlers.push(this.addHandlers.pop());
+}
+// handle graceful disconnect
+if (this.disconnecting && this._requests.length === 0) {
+this.deleteTimedHandler(this._disconnectTimeout);
+this._disconnectTimeout = null;
+this._doDisconnect();
+return;
+}
+var typ = elem.getAttribute("type");
+var cond, conflict;
+if (typ !== null && typ == "terminate") {
+// an error occurred
+cond = elem.getAttribute("condition");
+conflict = elem.getElementsByTagName("conflict");
+if (cond !== null) {
+if (cond == "remote-stream-error" && conflict.length > 0) {
+cond = "conflict";
+}
+this._changeConnectStatus(Strophe.Status.CONNFAIL, cond);
+} else {
+this._changeConnectStatus(Strophe.Status.CONNFAIL, "unknown");
+}
+this.disconnect();
+return;
+}
+// send each incoming stanza through the handler chain
+var self = this;
+Strophe.forEachChild(elem, null, function (child) {
+var i, newList;
+// process handlers
+newList = self.handlers;
+self.handlers = [];
+for (i = 0; i < newList.length; i++) {
+var hand = newList[i];
+if (hand.isMatch(child) &&
+(self.authenticated || !hand.user)) {
+if (hand.run(child)) {
+self.handlers.push(hand);
+}
+} else {
+self.handlers.push(hand);
+}
+}
+});
+},
+/** PrivateFunction: _sendTerminate
+*  _Private_ function to send initial disconnect sequence.
+*
+*  This is the first step in a graceful disconnect.  It sends
+*  the BOSH server a terminate body and includes an unavailable
+*  presence if authentication has completed.
+*/
+_sendTerminate: function ()
+{
+Strophe.info("_sendTerminate was called");
+var body = this._buildBody().attrs({type: "terminate"});
+if (this.authenticated) {
+body.c('presence', {
+xmlns: Strophe.NS.CLIENT,
+type: 'unavailable'
+});
+}
+this.disconnecting = true;
+var req = new Strophe.Request(body.tree(),
+this._onRequestStateChange.bind(this)
+.prependArg(this._dataRecv.bind(this)),
+body.tree().getAttribute("rid"));
+this._requests.push(req);
+this._throttledRequestHandler();
+},
+/** PrivateFunction: _connect_cb
+*  _Private_ handler for initial connection request.
+*
+*  This handler is used to process the initial connection request
+*  response from the BOSH server. It is used to set up authentication
+*  handlers and start the authentication process.
+*
+*  SASL authentication will be attempted if available, otherwise
+*  the code will fall back to legacy authentication.
+*
+*  Parameters:
+*    (Strophe.Request) req - The current request.
+*/
+_connect_cb: function (req)
+{
+Strophe.info("_connect_cb was called");
+this.connected = true;
+var bodyWrap = req.getResponse();
+if (!bodyWrap) { return; }
+this.xmlInput(bodyWrap);
+this.rawInput(Strophe.serialize(bodyWrap));
+var typ = bodyWrap.getAttribute("type");
+var cond, conflict;
+if (typ !== null && typ == "terminate") {
+// an error occurred
+cond = bodyWrap.getAttribute("condition");
+conflict = bodyWrap.getElementsByTagName("conflict");
+if (cond !== null) {
+if (cond == "remote-stream-error" && conflict.length > 0) {
+cond = "conflict";
+}
+this._changeConnectStatus(Strophe.Status.CONNFAIL, cond);
+} else {
+this._changeConnectStatus(Strophe.Status.CONNFAIL, "unknown");
+}
+return;
+}
+// check to make sure we don't overwrite these if _connect_cb is
+// called multiple times in the case of missing stream:features
+if (!this.sid) {
+this.sid = bodyWrap.getAttribute("sid");
+}
+if (!this.stream_id) {
+this.stream_id = bodyWrap.getAttribute("authid");
+}
+var wind = bodyWrap.getAttribute('requests');
+if (wind) { this.window = parseInt(wind, 10); }
+var hold = bodyWrap.getAttribute('hold');
+if (hold) { this.hold = parseInt(hold, 10); }
+var wait = bodyWrap.getAttribute('wait');
+if (wait) { this.wait = parseInt(wait, 10); }
+var do_sasl_plain = false;
+var do_sasl_digest_md5 = false;
+var do_sasl_anonymous = false;
+var mechanisms = bodyWrap.getElementsByTagName("mechanism");
+var i, mech, auth_str, hashed_auth_str;
+if (mechanisms.length > 0) {
+for (i = 0; i < mechanisms.length; i++) {
+mech = Strophe.getText(mechanisms[i]);
+if (mech == 'DIGEST-MD5') {
+do_sasl_digest_md5 = true;
+} else if (mech == 'PLAIN') {
+do_sasl_plain = true;
+} else if (mech == 'ANONYMOUS') {
+do_sasl_anonymous = true;
+}
+}
+} else {
+// we didn't get stream:features yet, so we need wait for it
+// by sending a blank poll request
+var body = this._buildBody();
+this._requests.push(
+new Strophe.Request(body.tree(),
+this._onRequestStateChange.bind(this)
+.prependArg(this._connect_cb.bind(this)),
+body.tree().getAttribute("rid")));
+this._throttledRequestHandler();
+return;
+}
+if (Strophe.getNodeFromJid(this.jid) === null &&
+do_sasl_anonymous) {
+this._changeConnectStatus(Strophe.Status.AUTHENTICATING, null);
+this._sasl_success_handler = this._addSysHandler(
+this._sasl_success_cb.bind(this), null,
+"success", null, null);
+this._sasl_failure_handler = this._addSysHandler(
+this._sasl_failure_cb.bind(this), null,
+"failure", null, null);
+this.send($build("auth", {
+xmlns: Strophe.NS.SASL,
+mechanism: "ANONYMOUS"
+}).tree());
+} else if (Strophe.getNodeFromJid(this.jid) === null) {
+// we don't have a node, which is required for non-anonymous
+// client connections
+this._changeConnectStatus(Strophe.Status.CONNFAIL,
+'x-strophe-bad-non-anon-jid');
+this.disconnect();
+} else if (do_sasl_digest_md5) {
+this._changeConnectStatus(Strophe.Status.AUTHENTICATING, null);
+this._sasl_challenge_handler = this._addSysHandler(
+this._sasl_challenge1_cb.bind(this), null,
+"challenge", null, null);
+this._sasl_failure_handler = this._addSysHandler(
+this._sasl_failure_cb.bind(this), null,
+"failure", null, null);
+this.send($build("auth", {
+xmlns: Strophe.NS.SASL,
+mechanism: "DIGEST-MD5"
+}).tree());
+} else if (do_sasl_plain) {
+// Build the plain auth string (barejid null
+// username null password) and base 64 encoded.
+auth_str = Strophe.getBareJidFromJid(this.jid);
+auth_str = auth_str + "\u0000";
+auth_str = auth_str + Strophe.getNodeFromJid(this.jid);
+auth_str = auth_str + "\u0000";
+auth_str = auth_str + this.pass;
+this._changeConnectStatus(Strophe.Status.AUTHENTICATING, null);
+this._sasl_success_handler = this._addSysHandler(
+this._sasl_success_cb.bind(this), null,
+"success", null, null);
+this._sasl_failure_handler = this._addSysHandler(
+this._sasl_failure_cb.bind(this), null,
+"failure", null, null);
+hashed_auth_str = Base64.encode(auth_str);
+this.send($build("auth", {
+xmlns: Strophe.NS.SASL,
+mechanism: "PLAIN"
+}).t(hashed_auth_str).tree());
+} else {
+this._changeConnectStatus(Strophe.Status.AUTHENTICATING, null);
+this._addSysHandler(this._auth1_cb.bind(this), null, null,
+null, "_auth_1");
+this.send($iq({
+type: "get",
+to: this.domain,
+id: "_auth_1"
+}).c("query", {
+xmlns: Strophe.NS.AUTH
+}).c("username", {}).t(Strophe.getNodeFromJid(this.jid)).tree());
+}
+},
+/** PrivateFunction: _sasl_challenge1_cb
+*  _Private_ handler for DIGEST-MD5 SASL authentication.
+*
+*  Parameters:
+*    (XMLElement) elem - The challenge stanza.
+*
+*  Returns:
+*    false to remove the handler.
+*/
+_sasl_challenge1_cb: function (elem)
+{
+var attribMatch = /([a-z]+)=("[^"]+"|[^,"]+)(?:,|$)/;
+var challenge = Base64.decode(Strophe.getText(elem));
+var cnonce = MD5.hexdigest(Math.random() * 1234567890);
+var realm = "";
+var host = null;
+var nonce = "";
+var qop = "";
+var matches;
+// remove unneeded handlers
+this.deleteHandler(this._sasl_failure_handler);
+while (challenge.match(attribMatch)) {
+matches = challenge.match(attribMatch);
+challenge = challenge.replace(matches[0], "");
+matches[2] = matches[2].replace(/^"(.+)"$/, "$1");
+switch (matches[1]) {
+case "realm":
+realm = matches[2];
+break;
+case "nonce":
+nonce = matches[2];
+break;
+case "qop":
+qop = matches[2];
+break;
+case "host":
+host = matches[2];
+break;
+}
+}
+var digest_uri = "xmpp/" + this.domain;
+if (host !== null) {
+digest_uri = digest_uri + "/" + host;
+}
+var A1 = MD5.hash(Strophe.getNodeFromJid(this.jid) +
+":" + realm + ":" + this.pass) +
+":" + nonce + ":" + cnonce;
+var A2 = 'AUTHENTICATE:' + digest_uri;
+var responseText = "";
+responseText += 'username=' +
+this._quote(Strophe.getNodeFromJid(this.jid)) + ',';
+responseText += 'realm=' + this._quote(realm) + ',';
+responseText += 'nonce=' + this._quote(nonce) + ',';
+responseText += 'cnonce=' + this._quote(cnonce) + ',';
+responseText += 'nc="00000001",';
+responseText += 'qop="auth",';
+responseText += 'digest-uri=' + this._quote(digest_uri) + ',';
+responseText += 'response=' + this._quote(
+MD5.hexdigest(MD5.hexdigest(A1) + ":" +
+nonce + ":00000001:" +
+cnonce + ":auth:" +
+MD5.hexdigest(A2))) + ',';
+responseText += 'charset="utf-8"';
+this._sasl_challenge_handler = this._addSysHandler(
+this._sasl_challenge2_cb.bind(this), null,
+"challenge", null, null);
+this._sasl_success_handler = this._addSysHandler(
+this._sasl_success_cb.bind(this), null,
+"success", null, null);
+this._sasl_failure_handler = this._addSysHandler(
+this._sasl_failure_cb.bind(this), null,
+"failure", null, null);
+this.send($build('response', {
+xmlns: Strophe.NS.SASL
+}).t(Base64.encode(responseText)).tree());
+return false;
+},
+/** PrivateFunction: _quote
+*  _Private_ utility function to backslash escape and quote strings.
+*
+*  Parameters:
+*    (String) str - The string to be quoted.
+*
+*  Returns:
+*    quoted string
+*/
+_quote: function (str)
+{
+return '"' + str.replace(/\\/g, "\\\\").replace(/"/g, '\\"') + '"';
+//" end string workaround for emacs
+},
+/** PrivateFunction: _sasl_challenge2_cb
+*  _Private_ handler for second step of DIGEST-MD5 SASL authentication.
+*
+*  Parameters:
+*    (XMLElement) elem - The challenge stanza.
+*
+*  Returns:
+*    false to remove the handler.
+*/
+_sasl_challenge2_cb: function (elem)
+{
+// remove unneeded handlers
+this.deleteHandler(this._sasl_success_handler);
+this.deleteHandler(this._sasl_failure_handler);
+this._sasl_success_handler = this._addSysHandler(
+this._sasl_success_cb.bind(this), null,
+"success", null, null);
+this._sasl_failure_handler = this._addSysHandler(
+this._sasl_failure_cb.bind(this), null,
+"failure", null, null);
+this.send($build('response', {xmlns: Strophe.NS.SASL}).tree());
+return false;
+},
+/** PrivateFunction: _auth1_cb
+*  _Private_ handler for legacy authentication.
+*
+*  This handler is called in response to the initial <iq type='get'/>
+*  for legacy authentication.  It builds an authentication <iq/> and
+*  sends it, creating a handler (calling back to _auth2_cb()) to
+*  handle the result
+*
+*  Parameters:
+*    (XMLElement) elem - The stanza that triggered the callback.
+*
+*  Returns:
+*    false to remove the handler.
+*/
+_auth1_cb: function (elem)
+{
+// build plaintext auth iq
+var iq = $iq({type: "set", id: "_auth_2"})
+.c('query', {xmlns: Strophe.NS.AUTH})
+.c('username', {}).t(Strophe.getNodeFromJid(this.jid))
+.up()
+.c('password').t(this.pass);
+if (!Strophe.getResourceFromJid(this.jid)) {
+// since the user has not supplied a resource, we pick
+// a default one here.  unlike other auth methods, the server
+// cannot do this for us.
+this.jid = Strophe.getBareJidFromJid(this.jid) + '/strophe';
+}
+iq.up().c('resource', {}).t(Strophe.getResourceFromJid(this.jid));
+this._addSysHandler(this._auth2_cb.bind(this), null,
+null, null, "_auth_2");
+this.send(iq.tree());
+return false;
+},
+/** PrivateFunction: _sasl_success_cb
+*  _Private_ handler for succesful SASL authentication.
+*
+*  Parameters:
+*    (XMLElement) elem - The matching stanza.
+*
+*  Returns:
+*    false to remove the handler.
+*/
+_sasl_success_cb: function (elem)
+{
+Strophe.info("SASL authentication succeeded.");
+// remove old handlers
+this.deleteHandler(this._sasl_failure_handler);
+this._sasl_failure_handler = null;
+if (this._sasl_challenge_handler) {
+this.deleteHandler(this._sasl_challenge_handler);
+this._sasl_challenge_handler = null;
+}
+this._addSysHandler(this._sasl_auth1_cb.bind(this), null,
+"stream:features", null, null);
+// we must send an xmpp:restart now
+this._sendRestart();
+return false;
+},
+/** PrivateFunction: _sasl_auth1_cb
+*  _Private_ handler to start stream binding.
+*
+*  Parameters:
+*    (XMLElement) elem - The matching stanza.
+*
+*  Returns:
+*    false to remove the handler.
+*/
+_sasl_auth1_cb: function (elem)
+{
+var i, child;
+for (i = 0; i < elem.childNodes.length; i++) {
+child = elem.childNodes[i];
+if (child.nodeName == 'bind') {
+this.do_bind = true;
+}
+if (child.nodeName == 'session') {
+this.do_session = true;
+}
+}
+if (!this.do_bind) {
+this._changeConnectStatus(Strophe.Status.AUTHFAIL, null);
+return false;
+} else {
+this._addSysHandler(this._sasl_bind_cb.bind(this), null, null,
+null, "_bind_auth_2");
+var resource = Strophe.getResourceFromJid(this.jid);
+if (resource) {
+this.send($iq({type: "set", id: "_bind_auth_2"})
+.c('bind', {xmlns: Strophe.NS.BIND})
+.c('resource', {}).t(resource).tree());
+} else {
+this.send($iq({type: "set", id: "_bind_auth_2"})
+.c('bind', {xmlns: Strophe.NS.BIND})
+.tree());
+}
+}
+return false;
+},
+/** PrivateFunction: _sasl_bind_cb
+*  _Private_ handler for binding result and session start.
+*
+*  Parameters:
+*    (XMLElement) elem - The matching stanza.
+*
+*  Returns:
+*    false to remove the handler.
+*/
+_sasl_bind_cb: function (elem)
+{
+if (elem.getAttribute("type") == "error") {
+Strophe.info("SASL binding failed.");
+this._changeConnectStatus(Strophe.Status.AUTHFAIL, null);
+return false;
+}
+// TODO - need to grab errors
+var bind = elem.getElementsByTagName("bind");
+var jidNode;
+if (bind.length > 0) {
+// Grab jid
+jidNode = bind[0].getElementsByTagName("jid");
+if (jidNode.length > 0) {
+this.jid = Strophe.getText(jidNode[0]);
+if (this.do_session) {
+this._addSysHandler(this._sasl_session_cb.bind(this),
+null, null, null, "_session_auth_2");
+this.send($iq({type: "set", id: "_session_auth_2"})
+.c('session', {xmlns: Strophe.NS.SESSION})
+.tree());
+} else {
+this.authenticated = true;
+this._changeConnectStatus(Strophe.Status.CONNECTED, null);
+}
+}
+} else {
+Strophe.info("SASL binding failed.");
+this._changeConnectStatus(Strophe.Status.AUTHFAIL, null);
+return false;
+}
+},
+/** PrivateFunction: _sasl_session_cb
+*  _Private_ handler to finish successful SASL connection.
+*
+*  This sets Connection.authenticated to true on success, which
+*  starts the processing of user handlers.
+*
+*  Parameters:
+*    (XMLElement) elem - The matching stanza.
+*
+*  Returns:
+*    false to remove the handler.
+*/
+_sasl_session_cb: function (elem)
+{
+if (elem.getAttribute("type") == "result") {
+this.authenticated = true;
+this._changeConnectStatus(Strophe.Status.CONNECTED, null);
+} else if (elem.getAttribute("type") == "error") {
+Strophe.info("Session creation failed.");
+this._changeConnectStatus(Strophe.Status.AUTHFAIL, null);
+return false;
+}
+return false;
+},
+/** PrivateFunction: _sasl_failure_cb
+*  _Private_ handler for SASL authentication failure.
+*
+*  Parameters:
+*    (XMLElement) elem - The matching stanza.
+*
+*  Returns:
+*    false to remove the handler.
+*/
+_sasl_failure_cb: function (elem)
+{
+// delete unneeded handlers
+if (this._sasl_success_handler) {
+this.deleteHandler(this._sasl_success_handler);
+this._sasl_success_handler = null;
+}
+if (this._sasl_challenge_handler) {
+this.deleteHandler(this._sasl_challenge_handler);
+this._sasl_challenge_handler = null;
+}
+this._changeConnectStatus(Strophe.Status.AUTHFAIL, null);
+return false;
+},
+/** PrivateFunction: _auth2_cb
+*  _Private_ handler to finish legacy authentication.
+*
+*  This handler is called when the result from the jabber:iq:auth
+*  <iq/> stanza is returned.
+*
+*  Parameters:
+*    (XMLElement) elem - The stanza that triggered the callback.
+*
+*  Returns:
+*    false to remove the handler.
+*/
+_auth2_cb: function (elem)
+{
+if (elem.getAttribute("type") == "result") {
+this.authenticated = true;
+this._changeConnectStatus(Strophe.Status.CONNECTED, null);
+} else if (elem.getAttribute("type") == "error") {
+this._changeConnectStatus(Strophe.Status.AUTHFAIL, null);
+this.disconnect();
+}
+return false;
+},
+/** PrivateFunction: _addSysTimedHandler
+*  _Private_ function to add a system level timed handler.
+*
+*  This function is used to add a Strophe.TimedHandler for the
+*  library code.  System timed handlers are allowed to run before
+*  authentication is complete.
+*
+*  Parameters:
+*    (Integer) period - The period of the handler.
+*    (Function) handler - The callback function.
+*/
+_addSysTimedHandler: function (period, handler)
+{
+var thand = new Strophe.TimedHandler(period, handler);
+thand.user = false;
+this.addTimeds.push(thand);
+return thand;
+},
+/** PrivateFunction: _addSysHandler
+*  _Private_ function to add a system level stanza handler.
+*
+*  This function is used to add a Strophe.Handler for the
+*  library code.  System stanza handlers are allowed to run before
+*  authentication is complete.
+*
+*  Parameters:
+*    (Function) handler - The callback function.
+*    (String) ns - The namespace to match.
+*    (String) name - The stanza name to match.
+*    (String) type - The stanza type attribute to match.
+*    (String) id - The stanza id attribute to match.
+*/
+_addSysHandler: function (handler, ns, name, type, id)
+{
+var hand = new Strophe.Handler(handler, ns, name, type, id);
+hand.user = false;
+this.addHandlers.push(hand);
+return hand;
+},
+/** PrivateFunction: _onDisconnectTimeout
+*  _Private_ timeout handler for handling non-graceful disconnection.
+*
+*  If the graceful disconnect process does not complete within the
+*  time allotted, this handler finishes the disconnect anyway.
+*
+*  Returns:
+*    false to remove the handler.
+*/
+_onDisconnectTimeout: function ()
+{
+Strophe.info("_onDisconnectTimeout was called");
+// cancel all remaining requests and clear the queue
+var req;
+while (this._requests.length > 0) {
+req = this._requests.pop();
+req.abort = true;
+req.xhr.abort();
+// jslint complains, but this is fine. setting to empty func
+// is necessary for IE6
+req.xhr.onreadystatechange = function () {};
+}
+// actually disconnect
+this._doDisconnect();
+return false;
+},
+/** PrivateFunction: _onIdle
+*  _Private_ handler to process events during idle cycle.
+*
+*  This handler is called every 100ms to fire timed handlers that
+*  are ready and keep poll requests going.
+*/
+_onIdle: function ()
+{
+var i, thand, since, newList;
+// remove timed handlers that have been scheduled for deletion
+while (this.removeTimeds.length > 0) {
+thand = this.removeTimeds.pop();
+i = this.timedHandlers.indexOf(thand);
+if (i >= 0) {
+this.timedHandlers.splice(i, 1);
+}
+}
+// add timed handlers scheduled for addition
+while (this.addTimeds.length > 0) {
+this.timedHandlers.push(this.addTimeds.pop());
+}
+// call ready timed handlers
+var now = new Date().getTime();
+newList = [];
+for (i = 0; i < this.timedHandlers.length; i++) {
+thand = this.timedHandlers[i];
+if (this.authenticated || !thand.user) {
+since = thand.lastCalled + thand.period;
+if (since - now <= 0) {
+if (thand.run()) {
+newList.push(thand);
+}
+} else {
+newList.push(thand);
+}
+}
+}
+this.timedHandlers = newList;
+var body, time_elapsed;
+// if no requests are in progress, poll
+if (this.authenticated && this._requests.length === 0 &&
+this._data.length === 0 && !this.disconnecting) {
+Strophe.info("no requests during idle cycle, sending " +
+"blank request");
+this._data.push(null);
+}
+if (this._requests.length < 2 && this._data.length > 0 &&
+!this.paused) {
+body = this._buildBody();
+for (i = 0; i < this._data.length; i++) {
+if (this._data[i] !== null) {
+if (this._data[i] === "restart") {
+body.attrs({
+to: this.domain,
+"xml:lang": "en",
+"xmpp:restart": "true",
+"xmlns:xmpp": Strophe.NS.BOSH
+});
+} else {
+body.cnode(this._data[i]).up();
+}
+}
+}
+delete this._data;
+this._data = [];
+this._requests.push(
+new Strophe.Request(body.tree(),
+this._onRequestStateChange.bind(this)
+.prependArg(this._dataRecv.bind(this)),
+body.tree().getAttribute("rid")));
+this._processRequest(this._requests.length - 1);
+}
+if (this._requests.length > 0) {
+time_elapsed = this._requests[0].age();
+if (this._requests[0].dead !== null) {
+if (this._requests[0].timeDead() >
+Math.floor(Strophe.SECONDARY_TIMEOUT * this.wait)) {
+this._throttledRequestHandler();
+}
+}
+if (time_elapsed > Math.floor(Strophe.TIMEOUT * this.wait)) {
+Strophe.warn("Request " +
+this._requests[0].id +
+" timed out, over " + Math.floor(Strophe.TIMEOUT * this.wait) +
+" seconds since last activity");
+this._throttledRequestHandler();
+}
+}
+// reactivate the timer
+clearTimeout(this._idleTimeout);
+this._idleTimeout = setTimeout(this._onIdle.bind(this), 100);
+}
+};
+if (callback) {
+callback(Strophe, $build, $msg, $iq, $pres);
+}
+})(function () {
+window.Strophe = arguments[0];
+window.$build = arguments[1];
+window.$msg = arguments[2];
+window.$iq = arguments[3];
+window.$pres = arguments[4];
+});