/*
* Copyright 2015 Async-IO.org
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/**
* Atmosphere.js
* https://github.com/Atmosphere/atmosphere-javascript
*
* API reference
* https://github.com/Atmosphere/atmosphere/wiki/jQuery.atmosphere.js-API
*
* Highly inspired by
* - Portal by Donghwan Kim http://flowersinthesand.github.io/portal/
*/
(function (root, factory) {
if (typeof define === "function" && define.amd) {
// AMD
define(factory);
} else if(typeof exports !== 'undefined') {
// CommonJS
module.exports = factory();
} else {
// Browser globals, Window
root.atmosphere = factory();
}
}(this, function () {
"use strict";
var atmosphere = {},
guid,
offline = false,
requests = [],
callbacks = [],
uuid = 0,
hasOwn = Object.prototype.hasOwnProperty;
atmosphere = {
version: "2.3.2-javascript",
onError: function (response) {
},
onClose: function (response) {
},
onOpen: function (response) {
},
onReopen: function (response) {
},
onMessage: function (response) {
},
onReconnect: function (request, response) {
},
onMessagePublished: function (response) {
},
onTransportFailure: function (errorMessage, _request) {
},
onLocalMessage: function (response) {
},
onFailureToReconnect: function (request, response) {
},
onClientTimeout: function (request) {
},
onOpenAfterResume: function (request) {
},
/**
* Creates an object based on an atmosphere subscription that exposes functions defined by the Websocket interface.
*
* @class WebsocketApiAdapter
* @param {Object} request the request object to build the underlying subscription
* @constructor
*/
WebsocketApiAdapter: function (request) {
var _socket, _adapter;
/**
* Overrides the onMessage callback in given request.
*
* @method onMessage
* @param {Object} e the event object
*/
request.onMessage = function (e) {
_adapter.onmessage({data: e.responseBody});
};
/**
* Overrides the onMessagePublished callback in given request.
*
* @method onMessagePublished
* @param {Object} e the event object
*/
request.onMessagePublished = function (e) {
_adapter.onmessage({data: e.responseBody});
};
/**
* Overrides the onOpen callback in given request to proxy the event to the adapter.
*
* @method onOpen
* @param {Object} e the event object
*/
request.onOpen = function (e) {
_adapter.onopen(e);
};
_adapter = {
close: function () {
_socket.close();
},
send: function (data) {
_socket.push(data);
},
onmessage: function (e) {
},
onopen: function (e) {
},
onclose: function (e) {
},
onerror: function (e) {
}
};
_socket = new atmosphere.subscribe(request);
return _adapter;
},
AtmosphereRequest: function (options) {
/**
* {Object} Request parameters.
*
* @private
*/
var _request = {
timeout: 300000,
method: 'GET',
headers: {},
contentType: '',
callback: null,
url: '',
data: '',
suspend: true,
maxRequest: -1,
reconnect: true,
maxStreamingLength: 10000000,
lastIndex: 0,
logLevel: 'info',
requestCount: 0,
fallbackMethod: 'GET',
fallbackTransport: 'streaming',
transport: 'long-polling',
webSocketImpl: null,
webSocketBinaryType: null,
dispatchUrl: null,
webSocketPathDelimiter: "@@",
enableXDR: false,
rewriteURL: false,
attachHeadersAsQueryString: true,
executeCallbackBeforeReconnect: false,
readyState: 0,
withCredentials: false,
trackMessageLength: false,
messageDelimiter: '|',
connectTimeout: -1,
reconnectInterval: 0,
dropHeaders: true,
uuid: 0,
async: true,
shared: false,
readResponsesHeaders: false,
maxReconnectOnClose: 5,
enableProtocol: true,
disableDisconnect: false,
pollingInterval: 0,
heartbeat: {
client: null,
server: null
},
ackInterval: 0,
closeAsync: false,
reconnectOnServerError: true,
handleOnlineOffline: true,
onError: function (response) {
},
onClose: function (response) {
},
onOpen: function (response) {
},
onMessage: function (response) {
},
onReopen: function (request, response) {
},
onReconnect: function (request, response) {
},
onMessagePublished: function (response) {
},
onTransportFailure: function (reason, request) {
},
onLocalMessage: function (request) {
},
onFailureToReconnect: function (request, response) {
},
onClientTimeout: function (request) {
},
onOpenAfterResume: function (request) {
}
};
/**
* {Object} Request's last response.
*
* @private
*/
var _response = {
status: 200,
reasonPhrase: "OK",
responseBody: '',
messages: [],
headers: [],
state: "messageReceived",
transport: "polling",
error: null,
request: null,
partialMessage: "",
errorHandled: false,
closedByClientTimeout: false,
ffTryingReconnect: false
};
/**
* {websocket} Opened web socket.
*
* @private
*/
var _websocket = null;
/**
* {SSE} Opened SSE.
*
* @private
*/
var _sse = null;
/**
* {XMLHttpRequest, ActiveXObject} Opened ajax request (in case of http-streaming or long-polling)
*
* @private
*/
var _activeRequest = null;
/**
* {Object} Object use for streaming with IE.
*
* @private
*/
var _ieStream = null;
/**
* {Object} Object use for jsonp transport.
*
* @private
*/
var _jqxhr = null;
/**
* {boolean} If request has been subscribed or not.
*
* @private
*/
var _subscribed = true;
/**
* {number} Number of test reconnection.
*
* @private
*/
var _requestCount = 0;
/**
* The Heartbeat interval send by the server.
* @type {int}
* @private
*/
var _heartbeatInterval = 0;
/**
* The Heartbeat bytes send by the server.
* @type {string}
* @private
*/
var _heartbeatPadding = 'X';
/**
* {boolean} If request is currently aborted.
*
* @private
*/
var _abortingConnection = false;
/**
* A local "channel' of communication.
*
* @private
*/
var _localSocketF = null;
/**
* The storage used.
*
* @private
*/
var _storageService;
/**
* Local communication
*
* @private
*/
var _localStorageService = null;
/**
* A Unique ID
*
* @private
*/
var guid = atmosphere.util.now();
/** Trace time */
var _traceTimer;
/** Key for connection sharing */
var _sharingKey;
/**
* {boolean} If window beforeUnload event has been called.
* Flag will be reset after 5000 ms
*
* @private
*/
var _beforeUnloadState = false;
// Automatic call to subscribe
_subscribe(options);
/**
* Initialize atmosphere request object.
*
* @private
*/
function _init() {
_subscribed = true;
_abortingConnection = false;
_requestCount = 0;
_websocket = null;
_sse = null;
_activeRequest = null;
_ieStream = null;
}
/**
* Re-initialize atmosphere object.
*
* @private
*/
function _reinit() {
_clearState();
_init();
}
/**
* Returns true if the given level is equal or above the configured log level.
*
* @private
*/
function _canLog(level) {
if (level == 'debug') {
return _request.logLevel === 'debug';
} else if (level == 'info') {
return _request.logLevel === 'info' || _request.logLevel === 'debug';
} else if (level == 'warn') {
return _request.logLevel === 'warn' || _request.logLevel === 'info' || _request.logLevel === 'debug';
} else if (level == 'error') {
return _request.logLevel === 'error' || _request.logLevel === 'warn' || _request.logLevel === 'info' || _request.logLevel === 'debug';
} else {
return false;
}
}
function _debug(msg) {
if (_canLog('debug')) {
atmosphere.util.debug(new Date() + " Atmosphere: " + msg);
}
}
/**
*
* @private
*/
function _verifyStreamingLength(ajaxRequest, rq) {
// Wait to be sure we have the full message before closing.
if (_response.partialMessage === "" && (rq.transport === 'streaming') && (ajaxRequest.responseText.length > rq.maxStreamingLength)) {
return true;
}
return false;
}
/**
* Disconnect
*
* @private
*/
function _disconnect() {
if (_request.enableProtocol && !_request.disableDisconnect && !_request.firstMessage) {
var query = "X-Atmosphere-Transport=close&X-Atmosphere-tracking-id=" + _request.uuid;
atmosphere.util.each(_request.headers, function (name, value) {
var h = atmosphere.util.isFunction(value) ? value.call(this, _request, _request, _response) : value;
if (h != null) {
query += "&" + encodeURIComponent(name) + "=" + encodeURIComponent(h);
}
});
var url = _request.url.replace(/([?&])_=[^&]*/, query);
url = url + (url === _request.url ? (/\?/.test(_request.url) ? "&" : "?") + query : "");
var rq = {
connected: false
};
var closeR = new atmosphere.AtmosphereRequest(rq);
closeR.connectTimeout = _request.connectTimeout;
closeR.attachHeadersAsQueryString = false;
closeR.dropHeaders = true;
closeR.url = url;
closeR.contentType = "text/plain";
closeR.transport = 'polling';
closeR.method = 'GET';
closeR.data = '';
closeR.heartbeat = null;
if (_request.enableXDR) {
closeR.enableXDR = _request.enableXDR
}
closeR.async = _request.closeAsync;
_pushOnClose("", closeR);
}
}
/**
* Close request.
*
* @private
*/
function _close() {
_debug("Closing (AtmosphereRequest._close() called)");
_abortingConnection = true;
if (_request.reconnectId) {
clearTimeout(_request.reconnectId);
delete _request.reconnectId;
}
if (_request.heartbeatTimer) {
clearTimeout(_request.heartbeatTimer);
}
_request.reconnect = false;
_response.request = _request;
_response.state = 'unsubscribe';
_response.responseBody = "";
_response.status = 408;
_response.partialMessage = "";
_invokeCallback();
_disconnect();
_clearState();
}
function _clearState() {
_response.partialMessage = "";
if (_request.id) {
clearTimeout(_request.id);
}
if (_request.heartbeatTimer) {
clearTimeout(_request.heartbeatTimer);
}
// https://github.com/Atmosphere/atmosphere/issues/1860#issuecomment-74707226
if(_request.reconnectId) {
clearTimeout(_request.reconnectId);
delete _request.reconnectId;
}
if (_ieStream != null) {
_ieStream.close();
_ieStream = null;
}
if (_jqxhr != null) {
_jqxhr.abort();
_jqxhr = null;
}
if (_activeRequest != null) {
_activeRequest.abort();
_activeRequest = null;
}
if (_websocket != null) {
if (_websocket.canSendMessage) {
_debug("invoking .close() on WebSocket object");
_websocket.close();
}
_websocket = null;
}
if (_sse != null) {
_sse.close();
_sse = null;
}
_clearStorage();
}
function _clearStorage() {
// Stop sharing a connection
if (_storageService != null) {
// Clears trace timer
clearInterval(_traceTimer);
// Removes the trace
document.cookie = _sharingKey + "=; expires=Thu, 01 Jan 1970 00:00:00 GMT; path=/";
// The heir is the parent unless unloading
_storageService.signal("close", {
reason: "",
heir: !_abortingConnection ? guid : (_storageService.get("children") || [])[0]
});
_storageService.close();
}
if (_localStorageService != null) {
_localStorageService.close();
}
}
/**
* Subscribe request using request transport.
* If request is currently opened, this one will be closed.
*
* @param {Object} Request parameters.
* @private
*/
function _subscribe(options) {
_reinit();
_request = atmosphere.util.extend(_request, options);
// Allow at least 1 request
_request.mrequest = _request.reconnect;
if (!_request.reconnect) {
_request.reconnect = true;
}
}
/**
* Check if web socket is supported (check for custom implementation provided by request object or browser implementation).
*
* @returns {boolean} True if web socket is supported, false otherwise.
* @private
*/
function _supportWebsocket() {
return _request.webSocketImpl != null || window.WebSocket || window.MozWebSocket;
}
/**
* Check if server side events (SSE) is supported (check for custom implementation provided by request object or browser implementation).
*
* @returns {boolean} True if web socket is supported, false otherwise.
* @private
*/
function _supportSSE() {
// Origin parts
var url = atmosphere.util.getAbsoluteURL(_request.url.toLowerCase());
var parts = /^([\w\+\.\-]+:)(?:\/\/([^\/?#:]*)(?::(\d+))?)?/.exec(url);
var crossOrigin = !!(parts && (
// protocol
parts[1] != window.location.protocol ||
// hostname
parts[2] != window.location.hostname ||
// port
(parts[3] || (parts[1] === "http:" ? 80 : 443)) != (window.location.port || (window.location.protocol === "http:" ? 80 : 443))
));
return window.EventSource && (!crossOrigin || !atmosphere.util.browser.safari || atmosphere.util.browser.vmajor >= 7);
}
/**
* Open request using request transport.
* If request transport is 'websocket' but websocket can't be opened, request will automatically reconnect using fallback transport.
*
* @private
*/
function _execute() {
// Shared across multiple tabs/windows.
if (_request.shared) {
_localStorageService = _local(_request);
if (_localStorageService != null) {
if (_canLog('debug')) {
atmosphere.util.debug("Storage service available. All communication will be local");
}
if (_localStorageService.open(_request)) {
// Local connection.
return;
}
}
if (_canLog('debug')) {
atmosphere.util.debug("No Storage service available.");
}
// Wasn't local or an error occurred
_localStorageService = null;
}
// Protocol
_request.firstMessage = uuid == 0 ? true : false;
_request.isOpen = false;
_request.ctime = atmosphere.util.now();
// We carry any UUID set by the user or from a previous connection.
if (_request.uuid === 0) {
_request.uuid = uuid;
}
_response.closedByClientTimeout = false;
if (_request.transport !== 'websocket' && _request.transport !== 'sse') {
_executeRequest(_request);
} else if (_request.transport === 'websocket') {
if (!_supportWebsocket()) {
_reconnectWithFallbackTransport("Websocket is not supported, using request.fallbackTransport (" + _request.fallbackTransport
+ ")");
} else {
_executeWebSocket(false);
}
} else if (_request.transport === 'sse') {
if (!_supportSSE()) {
_reconnectWithFallbackTransport("Server Side Events(SSE) is not supported, using request.fallbackTransport ("
+ _request.fallbackTransport + ")");
} else {
_executeSSE(false);
}
}
}
function _local(request) {
var trace, connector, orphan, name = "atmosphere-" + request.url, connectors = {
storage: function () {
function onstorage(event) {
if (event.key === name && event.newValue) {
listener(event.newValue);
}
}
if (!atmosphere.util.storage) {
return;
}
var storage = window.localStorage,
get = function (key) {
return atmosphere.util.parseJSON(storage.getItem(name + "-" + key));
},
set = function (key, value) {
storage.setItem(name + "-" + key, atmosphere.util.stringifyJSON(value));
};
return {
init: function () {
set("children", get("children").concat([guid]));
atmosphere.util.on(window, "storage", onstorage);
return get("opened");
},
signal: function (type, data) {
storage.setItem(name, atmosphere.util.stringifyJSON({
target: "p",
type: type,
data: data
}));
},
close: function () {
var children = get("children");
atmosphere.util.off(window, "storage", onstorage);
if (children) {
if (removeFromArray(children, request.id)) {
set("children", children);
}
}
}
};
},
windowref: function () {
var win = window.open("", name.replace(/\W/g, ""));
if (!win || win.closed || !win.callbacks) {
return;
}
return {
init: function () {
win.callbacks.push(listener);
win.children.push(guid);
return win.opened;
},
signal: function (type, data) {
if (!win.closed && win.fire) {
win.fire(atmosphere.util.stringifyJSON({
target: "p",
type: type,
data: data
}));
}
},
close: function () {
// Removes traces only if the parent is alive
if (!orphan) {
removeFromArray(win.callbacks, listener);
removeFromArray(win.children, guid);
}
}
};
}
};
function removeFromArray(array, val) {
var i, length = array.length;
for (i = 0; i < length; i++) {
if (array[i] === val) {
array.splice(i, 1);
}
}
return length !== array.length;
}
// Receives open, close and message command from the parent
function listener(string) {
var command = atmosphere.util.parseJSON(string), data = command.data;
if (command.target === "c") {
switch (command.type) {
case "open":
_open("opening", 'local', _request);
break;
case "close":
if (!orphan) {
orphan = true;
if (data.reason === "aborted") {
_close();
} else {
// Gives the heir some time to reconnect
if (data.heir === guid) {
_execute();
} else {
setTimeout(function () {
_execute();
}, 100);
}
}
}
break;
case "message":
_prepareCallback(data, "messageReceived", 200, request.transport);
break;
case "localMessage":
_localMessage(data);
break;
}
}
}
function findTrace() {
var matcher = new RegExp("(?:^|; )(" + encodeURIComponent(name) + ")=([^;]*)").exec(document.cookie);
if (matcher) {
return atmosphere.util.parseJSON(decodeURIComponent(matcher[2]));
}
}
// Finds and validates the parent socket's trace from the cookie
trace = findTrace();
if (!trace || atmosphere.util.now() - trace.ts > 1000) {
return;
}
// Chooses a connector
connector = connectors.storage() || connectors.windowref();
if (!connector) {
return;
}
return {
open: function () {
var parentOpened;
// Checks the shared one is alive
_traceTimer = setInterval(function () {
var oldTrace = trace;
trace = findTrace();
if (!trace || oldTrace.ts === trace.ts) {
// Simulates a close signal
listener(atmosphere.util.stringifyJSON({
target: "c",
type: "close",
data: {
reason: "error",
heir: oldTrace.heir
}
}));
}
}, 1000);
parentOpened = connector.init();
if (parentOpened) {
// Firing the open event without delay robs the user of the opportunity to bind connecting event handlers
setTimeout(function () {
_open("opening", 'local', request);
}, 50);
}
return parentOpened;
},
send: function (event) {
connector.signal("send", event);
},
localSend: function (event) {
connector.signal("localSend", atmosphere.util.stringifyJSON({
id: guid,
event: event
}));
},
close: function () {
// Do not signal the parent if this method is executed by the unload event handler
if (!_abortingConnection) {
clearInterval(_traceTimer);
connector.signal("close");
connector.close();
}
}
};
}
function share() {
var storageService, name = "atmosphere-" + _request.url, servers = {
// Powered by the storage event and the localStorage
// http://www.w3.org/TR/webstorage/#event-storage
storage: function () {
function onstorage(event) {
// When a deletion, newValue initialized to null
if (event.key === name && event.newValue) {
listener(event.newValue);
}
}
if (!atmosphere.util.storage) {
return;
}
var storage = window.localStorage;
return {
init: function () {
// Handles the storage event
atmosphere.util.on(window, "storage", onstorage);
},
signal: function (type, data) {
storage.setItem(name, atmosphere.util.stringifyJSON({
target: "c",
type: type,
data: data
}));
},
get: function (key) {
return atmosphere.util.parseJSON(storage.getItem(name + "-" + key));
},
set: function (key, value) {
storage.setItem(name + "-" + key, atmosphere.util.stringifyJSON(value));
},
close: function () {
atmosphere.util.off(window, "storage", onstorage);
storage.removeItem(name);
storage.removeItem(name + "-opened");
storage.removeItem(name + "-children");
}
};
},
// Powered by the window.open method
// https://developer.mozilla.org/en/DOM/window.open
windowref: function () {
// Internet Explorer raises an invalid argument error
// when calling the window.open method with the name containing non-word characters
var neim = name.replace(/\W/g, ""), container = document.getElementById(neim), win;
if (!container) {
container = document.createElement("div");
container.id = neim;
container.style.display = "none";
container.innerHTML = '';
document.body.appendChild(container);
}
win = container.firstChild.contentWindow;
return {
init: function () {
// Callbacks from different windows
win.callbacks = [listener];
// In IE 8 and less, only string argument can be safely passed to the function in other window
win.fire = function (string) {
var i;
for (i = 0; i < win.callbacks.length; i++) {
win.callbacks[i](string);
}
};
},
signal: function (type, data) {
if (!win.closed && win.fire) {
win.fire(atmosphere.util.stringifyJSON({
target: "c",
type: type,
data: data
}));
}
},
get: function (key) {
return !win.closed ? win[key] : null;
},
set: function (key, value) {
if (!win.closed) {
win[key] = value;
}
},
close: function () {
}
};
}
};
// Receives send and close command from the children
function listener(string) {
var command = atmosphere.util.parseJSON(string), data = command.data;
if (command.target === "p") {
switch (command.type) {
case "send":
_push(data);
break;
case "localSend":
_localMessage(data);
break;
case "close":
_close();
break;
}
}
}
_localSocketF = function propagateMessageEvent(context) {
storageService.signal("message", context);
};
function leaveTrace() {
document.cookie = _sharingKey + "=" +
// Opera's JSON implementation ignores a number whose a last digit of 0 strangely
// but has no problem with a number whose a last digit of 9 + 1
encodeURIComponent(atmosphere.util.stringifyJSON({
ts: atmosphere.util.now() + 1,
heir: (storageService.get("children") || [])[0]
})) + "; path=/";
}
// Chooses a storageService
storageService = servers.storage() || servers.windowref();
storageService.init();
if (_canLog('debug')) {
atmosphere.util.debug("Installed StorageService " + storageService);
}
// List of children sockets
storageService.set("children", []);
if (storageService.get("opened") != null && !storageService.get("opened")) {
// Flag indicating the parent socket is opened
storageService.set("opened", false);
}
// Leaves traces
_sharingKey = encodeURIComponent(name);
leaveTrace();
_traceTimer = setInterval(leaveTrace, 1000);
_storageService = storageService;
}
/**
* @private
*/
function _open(state, transport, request) {
if (_request.shared && transport !== 'local') {
share();
}
if (_storageService != null) {
_storageService.set("opened", true);
}
request.close = function () {
_close();
};
if (_requestCount > 0 && state === 're-connecting') {
request.isReopen = true;
_tryingToReconnect(_response);
} else if (_response.error == null) {
_response.request = request;
var prevState = _response.state;
_response.state = state;
var prevTransport = _response.transport;
_response.transport = transport;
var _body = _response.responseBody;
_invokeCallback();
_response.responseBody = _body;
_response.state = prevState;
_response.transport = prevTransport;
}
}
/**
* Execute request using jsonp transport.
*
* @param request {Object} request Request parameters, if undefined _request object will be used.
* @private
*/
function _jsonp(request) {
// When CORS is enabled, make sure we force the proper transport.
request.transport = "jsonp";
var rq = _request, script;
if ((request != null) && (typeof (request) !== 'undefined')) {
rq = request;
}
_jqxhr = {
open: function () {
var callback = "atmosphere" + (++guid);
function _reconnectOnFailure() {
rq.lastIndex = 0;
if (rq.openId) {
clearTimeout(rq.openId);
}
if (rq.heartbeatTimer) {
clearTimeout(rq.heartbeatTimer);
}
if (rq.reconnect && _requestCount++ < rq.maxReconnectOnClose) {
_open('re-connecting', rq.transport, rq);
_reconnect(_jqxhr, rq, request.reconnectInterval);
rq.openId = setTimeout(function () {
_triggerOpen(rq);
}, rq.reconnectInterval + 1000);
} else {
_onError(0, "maxReconnectOnClose reached");
}
}
function poll() {
var url = rq.url;
if (rq.dispatchUrl != null) {
url += rq.dispatchUrl;
}
var data = rq.data;
if (rq.attachHeadersAsQueryString) {
url = _attachHeaders(rq);
if (data !== '') {
url += "&X-Atmosphere-Post-Body=" + encodeURIComponent(data);
}
data = '';
}
var head = document.head || document.getElementsByTagName("head")[0] || document.documentElement;
script = document.createElement("script");
script.src = url + "&jsonpTransport=" + callback;
//script.async = rq.async;
script.clean = function () {
script.clean = script.onerror = script.onload = script.onreadystatechange = null;
if (script.parentNode) {
script.parentNode.removeChild(script);
}
if (++request.scriptCount === 2) {
request.scriptCount = 1;
_reconnectOnFailure();
}
};
script.onload = script.onreadystatechange = function () {
_debug("jsonp.onload");
if (!script.readyState || /loaded|complete/.test(script.readyState)) {
script.clean();
}
};
script.onerror = function () {
_debug("jsonp.onerror");
request.scriptCount = 1;
script.clean();
};
head.insertBefore(script, head.firstChild);
}
// Attaches callback
window[callback] = function (msg) {
_debug("jsonp.window");
request.scriptCount = 0;
if (rq.reconnect && rq.maxRequest === -1 || rq.requestCount++ < rq.maxRequest) {
// _readHeaders(_jqxhr, rq);
if (!rq.executeCallbackBeforeReconnect) {
_reconnect(_jqxhr, rq, rq.pollingInterval);
}
if (msg != null && typeof msg !== 'string') {
try {
msg = msg.message;
} catch (err) {
// The message was partial
}
}
var skipCallbackInvocation = _trackMessageSize(msg, rq, _response);
if (!skipCallbackInvocation) {
_prepareCallback(_response.responseBody, "messageReceived", 200, rq.transport);
}
if (rq.executeCallbackBeforeReconnect) {
_reconnect(_jqxhr, rq, rq.pollingInterval);
}
_timeout(rq);
} else {
atmosphere.util.log(_request.logLevel, ["JSONP reconnect maximum try reached " + _request.requestCount]);
_onError(0, "maxRequest reached");
}
};
setTimeout(function () {
poll();
}, 50);
},
abort: function () {
if (script && script.clean) {
script.clean();
}
}
};
_jqxhr.open();
}
/**
* Build websocket object.
*
* @param location {string} Web socket url.
* @returns {websocket} Web socket object.
* @private
*/
function _getWebSocket(location) {
if (_request.webSocketImpl != null) {
return _request.webSocketImpl;
} else {
if (window.WebSocket) {
return new WebSocket(location);
} else {
return new MozWebSocket(location);
}
}
}
/**
* Build web socket url from request url.
*
* @return {string} Web socket url (start with "ws" or "wss" for secure web socket).
* @private
*/
function _buildWebSocketUrl() {
return _attachHeaders(_request, atmosphere.util.getAbsoluteURL(_request.webSocketUrl || _request.url)).replace(/^http/, "ws");
}
/**
* Build SSE url from request url.
*
* @return a url with Atmosphere's headers
* @private
*/
function _buildSSEUrl() {
var url = _attachHeaders(_request);
return url;
}
/**
* Open SSE.
* Automatically use fallback transport if SSE can't be opened.
*
* @private
*/
function _executeSSE(sseOpened) {
_response.transport = "sse";
var location = _buildSSEUrl();
if (_canLog('debug')) {
atmosphere.util.debug("Invoking executeSSE");
atmosphere.util.debug("Using URL: " + location);
}
if (sseOpened && !_request.reconnect) {
if (_sse != null) {
_clearState();
}
return;
}
try {
_sse = new EventSource(location, {
withCredentials: _request.withCredentials
});
} catch (e) {
_onError(0, e);
_reconnectWithFallbackTransport("SSE failed. Downgrading to fallback transport and resending");
return;
}
if (_request.connectTimeout > 0) {
_request.id = setTimeout(function () {
if (!sseOpened) {
_clearState();
}
}, _request.connectTimeout);
}
_sse.onopen = function (event) {
_debug("sse.onopen");
_timeout(_request);
if (_canLog('debug')) {
atmosphere.util.debug("SSE successfully opened");
}
if (!_request.enableProtocol) {
if (!sseOpened) {
_open('opening', "sse", _request);
} else {
_open('re-opening', "sse", _request);
}
} else if (_request.isReopen) {
_request.isReopen = false;
_open('re-opening', _request.transport, _request);
}
sseOpened = true;
if (_request.method === 'POST') {
_response.state = "messageReceived";
_sse.send(_request.data);
}
};
_sse.onmessage = function (message) {
_debug("sse.onmessage");
_timeout(_request);
if (!_request.enableXDR && window.location.host && message.origin && message.origin !== window.location.protocol + "//" + window.location.host) {
atmosphere.util.log(_request.logLevel, ["Origin was not " + window.location.protocol + "//" + window.location.host]);
return;
}
_response.state = 'messageReceived';
_response.status = 200;
message = message.data;
var skipCallbackInvocation = _trackMessageSize(message, _request, _response);
// https://github.com/remy/polyfills/blob/master/EventSource.js
// Since we polling.
/* if (_sse.URL) {
_sse.interval = 100;
_sse.URL = _buildSSEUrl();
} */
if (!skipCallbackInvocation) {
_invokeCallback();
_response.responseBody = '';
_response.messages = [];
}
};
_sse.onerror = function (message) {
_debug("sse.onerror");
clearTimeout(_request.id);
if (_request.heartbeatTimer) {
clearTimeout(_request.heartbeatTimer);
}
if (_response.closedByClientTimeout) {
return;
}
_invokeClose(sseOpened);
_clearState();
if (_abortingConnection) {
atmosphere.util.log(_request.logLevel, ["SSE closed normally"]);
} else if (!sseOpened) {
_reconnectWithFallbackTransport("SSE failed. Downgrading to fallback transport and resending");
} else if (_request.reconnect && (_response.transport === 'sse')) {
if (_requestCount++ < _request.maxReconnectOnClose) {
_open('re-connecting', _request.transport, _request);
if (_request.reconnectInterval > 0) {
_request.reconnectId = setTimeout(function () {
_executeSSE(true);
}, _request.reconnectInterval);
} else {
_executeSSE(true);
}
_response.responseBody = "";
_response.messages = [];
} else {
atmosphere.util.log(_request.logLevel, ["SSE reconnect maximum try reached " + _requestCount]);
_onError(0, "maxReconnectOnClose reached");
}
}
};
}
/**
* Open web socket.
* Automatically use fallback transport if web socket can't be opened.
*
* @private
*/
function _executeWebSocket(webSocketOpened) {
_response.transport = "websocket";
var location = _buildWebSocketUrl(_request.url);
if (_canLog('debug')) {
atmosphere.util.debug("Invoking executeWebSocket, using URL: " + location);
}
if (webSocketOpened && !_request.reconnect) {
if (_websocket != null) {
_clearState();
}
return;
}
_websocket = _getWebSocket(location);
if (_request.webSocketBinaryType != null) {
_websocket.binaryType = _request.webSocketBinaryType;
}
if (_request.connectTimeout > 0) {
_request.id = setTimeout(function () {
if (!webSocketOpened) {
var _message = {
code: 1002,
reason: "",
wasClean: false
};
_websocket.onclose(_message);
// Close it anyway
try {
_clearState();
} catch (e) {
}
return;
}
}, _request.connectTimeout);
}
_websocket.onopen = function (message) {
_debug("websocket.onopen");
_timeout(_request);
offline = false;
if (_canLog('debug')) {
atmosphere.util.debug("Websocket successfully opened");
}
var reopening = webSocketOpened;
if (_websocket != null) {
_websocket.canSendMessage = true;
}
if (!_request.enableProtocol) {
webSocketOpened = true;
if (reopening) {
_open('re-opening', "websocket", _request);
} else {
_open('opening', "websocket", _request);
}
}
if (_websocket != null) {
if (_request.method === 'POST') {
_response.state = "messageReceived";
_websocket.send(_request.data);
}
}
};
_websocket.onmessage = function (message) {
_debug("websocket.onmessage");
_timeout(_request);
// We only consider it opened if we get the handshake data
// https://github.com/Atmosphere/atmosphere-javascript/issues/74
if (_request.enableProtocol) {
webSocketOpened = true;
}
_response.state = 'messageReceived';
_response.status = 200;
message = message.data;
var isString = typeof (message) === 'string';
if (isString) {
var skipCallbackInvocation = _trackMessageSize(message, _request, _response);
if (!skipCallbackInvocation) {
_invokeCallback();
_response.responseBody = '';
_response.messages = [];
}
} else {
message = _handleProtocol(_request, message);
if (message === "")
return;
_response.responseBody = message;
_invokeCallback();
_response.responseBody = null;
}
};
_websocket.onerror = function (message) {
_debug("websocket.onerror");
clearTimeout(_request.id);
if (_request.heartbeatTimer) {
clearTimeout(_request.heartbeatTimer);
}
};
_websocket.onclose = function (message) {
_debug("websocket.onclose");
clearTimeout(_request.id);
if (_response.state === 'closed')
return;
var reason = message.reason;
if (reason === "") {
switch (message.code) {
case 1000:
reason = "Normal closure; the connection successfully completed whatever purpose for which it was created.";
break;
case 1001:
reason = "The endpoint is going away, either because of a server failure or because the "
+ "browser is navigating away from the page that opened the connection.";
break;
case 1002:
reason = "The endpoint is terminating the connection due to a protocol error.";
break;
case 1003:
reason = "The connection is being terminated because the endpoint received data of a type it "
+ "cannot accept (for example, a text-only endpoint received binary data).";
break;
case 1004:
reason = "The endpoint is terminating the connection because a data frame was received that is too large.";
break;
case 1005:
reason = "Unknown: no status code was provided even though one was expected.";
break;
case 1006:
reason = "Connection was closed abnormally (that is, with no close frame being sent).";
break;
}
}
if (_canLog('warn')) {
atmosphere.util.warn("Websocket closed, reason: " + reason + ' - wasClean: ' + message.wasClean);
}
if (_response.closedByClientTimeout || (_request.handleOnlineOffline && offline)) {
// IFF online/offline events are handled and we happen to be offline, we stop all reconnect attempts and
// resume them in the "online" event (if we get here in that case, something else went wrong as the
// offline handler should stop any reconnect attempt).
//
// On the other hand, if we DO NOT handle online/offline events, we continue as before with reconnecting
// even if we are offline. Failing to do so would stop all reconnect attemps forever.
if (_request.reconnectId) {
clearTimeout(_request.reconnectId);
delete _request.reconnectId;
}
return;
}
_invokeClose(webSocketOpened);
_response.state = 'closed';
if (_abortingConnection) {
atmosphere.util.log(_request.logLevel, ["Websocket closed normally"]);
} else if (!webSocketOpened) {
_reconnectWithFallbackTransport("Websocket failed on first connection attempt. Downgrading to " + _request.fallbackTransport + " and resending");
} else if (_request.reconnect && _response.transport === 'websocket' ) {
_clearState();
if (_requestCount++ < _request.maxReconnectOnClose) {
_open('re-connecting', _request.transport, _request);
if (_request.reconnectInterval > 0) {
_request.reconnectId = setTimeout(function () {
_response.responseBody = "";
_response.messages = [];
_executeWebSocket(true);
}, _request.reconnectInterval);
} else {
_response.responseBody = "";
_response.messages = [];
_executeWebSocket(true);
}
} else {
atmosphere.util.log(_request.logLevel, ["Websocket reconnect maximum try reached " + _requestCount]);
if (_canLog('warn')) {
atmosphere.util.warn("Websocket error, reason: " + message.reason);
}
_onError(0, "maxReconnectOnClose reached");
}
}
};
var ua = navigator.userAgent.toLowerCase();
var isAndroid = ua.indexOf("android") > -1;
if (isAndroid && _websocket.url === undefined) {
// Android 4.1 does not really support websockets and fails silently
_websocket.onclose({
reason: "Android 4.1 does not support websockets.",
wasClean: false
});
}
}
function _handleProtocol(request, message) {
var nMessage = message;
if (request.transport === 'polling') return nMessage;
if (request.enableProtocol && request.firstMessage && atmosphere.util.trim(message).length !== 0) {
var pos = request.trackMessageLength ? 1 : 0;
var messages = message.split(request.messageDelimiter);
if (messages.length <= pos + 1) {
// Something went wrong, normally with IE or when a message is written before the
// handshake has been received.
return nMessage;
}
request.firstMessage = false;
request.uuid = atmosphere.util.trim(messages[pos]);
if (messages.length <= pos + 2) {
atmosphere.util.log('error', ["Protocol data not sent by the server. " +
"If you enable protocol on client side, be sure to install JavascriptProtocol interceptor on server side." +
"Also note that atmosphere-runtime 2.2+ should be used."]);
}
_heartbeatInterval = parseInt(atmosphere.util.trim(messages[pos + 1]), 10);
_heartbeatPadding = messages[pos + 2];
if (request.transport !== 'long-polling') {
_triggerOpen(request);
}
uuid = request.uuid;
nMessage = "";
// We have trailing messages
pos = request.trackMessageLength ? 4 : 3;
if (messages.length > pos + 1) {
for (var i = pos; i < messages.length; i++) {
nMessage += messages[i];
if (i + 1 !== messages.length) {
nMessage += request.messageDelimiter;
}
}
}
if (request.ackInterval !== 0) {
setTimeout(function () {
_push("...ACK...");
}, request.ackInterval);
}
} else if (request.enableProtocol && request.firstMessage && atmosphere.util.browser.msie && +atmosphere.util.browser.version.split(".")[0] < 10) {
// In case we are getting some junk from IE
atmosphere.util.log(_request.logLevel, ["Receiving unexpected data from IE"]);
} else {
_triggerOpen(request);
}
return nMessage;
}
function _timeout(_request) {
clearTimeout(_request.id);
if (_request.timeout > 0 && _request.transport !== 'polling') {
_request.id = setTimeout(function () {
_onClientTimeout(_request);
_disconnect();
_clearState();
}, _request.timeout);
}
}
function _onClientTimeout(_request) {
_response.closedByClientTimeout = true;
_response.state = 'closedByClient';
_response.responseBody = "";
_response.status = 408;
_response.messages = [];
_invokeCallback();
}
function _onError(code, reason) {
_clearState();
clearTimeout(_request.id);
_response.state = 'error';
_response.reasonPhrase = reason;
_response.responseBody = "";
_response.status = code;
_response.messages = [];
_invokeCallback();
}
/**
* Track received message and make sure callbacks/functions are only invoked when the complete message has been received.
*
* @param message
* @param request
* @param response
*/
function _trackMessageSize(message, request, response) {
message = _handleProtocol(request, message);
if (message.length === 0)
return true;
response.responseBody = message;
if (request.trackMessageLength) {
// prepend partialMessage if any
message = response.partialMessage + message;
var messages = [];
var messageStart = message.indexOf(request.messageDelimiter);
if (messageStart != -1) {
while (messageStart !== -1) {
var str = message.substring(0, messageStart);
var messageLength = +str;
if (isNaN(messageLength))
throw new Error('message length "' + str + '" is not a number');
messageStart += request.messageDelimiter.length;
if (messageStart + messageLength > message.length) {
// message not complete, so there is no trailing messageDelimiter
messageStart = -1;
} else {
// message complete, so add it
messages.push(message.substring(messageStart, messageStart + messageLength));
// remove consumed characters
message = message.substring(messageStart + messageLength, message.length);
messageStart = message.indexOf(request.messageDelimiter);
}
}
/* keep any remaining data */
response.partialMessage = message;
if (messages.length !== 0) {
response.responseBody = messages.join(request.messageDelimiter);
response.messages = messages;
return false;
} else {
response.responseBody = "";
response.messages = [];
return true;
}
}
}
response.responseBody = message;
response.messages = [message];
return false;
}
/**
* Reconnect request with fallback transport.
* Used in case websocket can't be opened.
*
* @private
*/
function _reconnectWithFallbackTransport(errorMessage) {
atmosphere.util.log(_request.logLevel, [errorMessage]);
if (typeof (_request.onTransportFailure) !== 'undefined') {
_request.onTransportFailure(errorMessage, _request);
} else if (typeof (atmosphere.util.onTransportFailure) !== 'undefined') {
atmosphere.util.onTransportFailure(errorMessage, _request);
}
_request.transport = _request.fallbackTransport;
var reconnectInterval = _request.connectTimeout === -1 ? 0 : _request.connectTimeout;
if (_request.reconnect && _request.transport !== 'none' || _request.transport == null) {
_request.method = _request.fallbackMethod;
_response.transport = _request.fallbackTransport;
_request.fallbackTransport = 'none';
if (reconnectInterval > 0) {
_request.reconnectId = setTimeout(function () {
_execute();
}, reconnectInterval);
} else {
_execute();
}
} else {
_onError(500, "Unable to reconnect with fallback transport");
}
}
/**
* Get url from request and attach headers to it.
*
* @param request {Object} request Request parameters, if undefined _request object will be used.
*
* @returns {Object} Request object, if undefined, _request object will be used.
* @private
*/
function _attachHeaders(request, url) {
var rq = _request;
if ((request != null) && (typeof (request) !== 'undefined')) {
rq = request;
}
if (url == null) {
url = rq.url;
}
// If not enabled
if (!rq.attachHeadersAsQueryString)
return url;
// If already added
if (url.indexOf("X-Atmosphere-Framework") !== -1) {
return url;
}
url += (url.indexOf('?') !== -1) ? '&' : '?';
url += "X-Atmosphere-tracking-id=" + rq.uuid;
url += "&X-Atmosphere-Framework=" + atmosphere.version;
url += "&X-Atmosphere-Transport=" + rq.transport;
if (rq.trackMessageLength) {
url += "&X-Atmosphere-TrackMessageSize=" + "true";
}
if (rq.heartbeat !== null && rq.heartbeat.server !== null) {
url += "&X-Heartbeat-Server=" + rq.heartbeat.server;
}
if (rq.contentType !== '') {
//Eurk!
url += "&Content-Type=" + (rq.transport === 'websocket' ? rq.contentType : encodeURIComponent(rq.contentType));
}
if (rq.enableProtocol) {
url += "&X-atmo-protocol=true";
}
atmosphere.util.each(rq.headers, function (name, value) {
var h = atmosphere.util.isFunction(value) ? value.call(this, rq, request, _response) : value;
if (h != null) {
url += "&" + encodeURIComponent(name) + "=" + encodeURIComponent(h);
}
});
return url;
}
function _triggerOpen(rq) {
if (!rq.isOpen) {
rq.isOpen = true;
_open('opening', rq.transport, rq);
} else if (rq.isReopen) {
rq.isReopen = false;
_open('re-opening', rq.transport, rq);
} else if (_response.state === 'messageReceived' && (rq.transport === 'jsonp' || rq.transport === 'long-polling')) {
_openAfterResume(_response);
} else {
return;
}
_startHeartbeat(rq);
}
function _startHeartbeat(rq) {
if (rq.heartbeatTimer != null) {
clearTimeout(rq.heartbeatTimer);
}
if (!isNaN(_heartbeatInterval) && _heartbeatInterval > 0) {
var _pushHeartbeat = function () {
if (_canLog('debug')) {
atmosphere.util.debug("Sending heartbeat");
}
_push(_heartbeatPadding);
rq.heartbeatTimer = setTimeout(_pushHeartbeat, _heartbeatInterval);
};
rq.heartbeatTimer = setTimeout(_pushHeartbeat, _heartbeatInterval);
}
}
/**
* Execute ajax request.
*
* @param request {Object} request Request parameters, if undefined _request object will be used.
* @private
*/
function _executeRequest(request) {
var rq = _request;
if ((request != null) || (typeof (request) !== 'undefined')) {
rq = request;
}
rq.lastIndex = 0;
rq.readyState = 0;
// CORS fake using JSONP
if ((rq.transport === 'jsonp') || ((rq.enableXDR) && (atmosphere.util.checkCORSSupport()))) {
_jsonp(rq);
return;
}
if (atmosphere.util.browser.msie && +atmosphere.util.browser.version.split(".")[0] < 10) {
if ((rq.transport === 'streaming')) {
if (rq.enableXDR && window.XDomainRequest) {
_ieXDR(rq);
} else {
_ieStreaming(rq);
}
return;
}
if ((rq.enableXDR) && (window.XDomainRequest)) {
_ieXDR(rq);
return;
}
}
var reconnectFExec = function (force) {
rq.lastIndex = 0;
_requestCount++; // Increase also when forcing reconnect as _open checks _requestCount
if (force || (rq.reconnect && _requestCount <= rq.maxReconnectOnClose)) {
var delay = force ? 0 : request.reconnectInterval; // Reconnect immediately if the server resumed the connection (timeout)
_response.ffTryingReconnect = true;
_open('re-connecting', request.transport, request);
_reconnect(ajaxRequest, rq, delay);
} else {
_onError(0, "maxReconnectOnClose reached");
}
};
var reconnectF = function (force){
if(atmosphere._beforeUnloadState){
// ATMOSPHERE-JAVASCRIPT-143: Delay reconnect to avoid reconnect attempts before an actual unload (we don't know if an unload will happen, yet)
atmosphere.util.debug(new Date() + " Atmosphere: reconnectF: execution delayed due to _beforeUnloadState flag");
setTimeout(function () {
reconnectFExec(force);
}, 5000);
}else {
reconnectFExec(force);
}
};
var disconnected = function () {
// Prevent onerror callback to be called
_response.errorHandled = true;
_clearState();
reconnectF(false);
};
if (rq.force || (rq.reconnect && (rq.maxRequest === -1 || rq.requestCount++ < rq.maxRequest))) {
rq.force = false;
var ajaxRequest = atmosphere.util.xhr();
ajaxRequest.hasData = false;
_doRequest(ajaxRequest, rq, true);
if (rq.suspend) {
_activeRequest = ajaxRequest;
}
if (rq.transport !== 'polling') {
_response.transport = rq.transport;
ajaxRequest.onabort = function () {
_debug("ajaxrequest.onabort")
_invokeClose(true);
};
ajaxRequest.onerror = function () {
_debug("ajaxrequest.onerror")
_response.error = true;
_response.ffTryingReconnect = true;
try {
_response.status = XMLHttpRequest.status;
} catch (e) {
_response.status = 500;
}
if (!_response.status) {
_response.status = 500;
}
if (!_response.errorHandled) {
_clearState();
reconnectF(false);
}
};
}
ajaxRequest.onreadystatechange = function () {
_debug("ajaxRequest.onreadystatechange, new state: " + ajaxRequest.readyState);
if (_abortingConnection) {
_debug("onreadystatechange has been ignored due to _abortingConnection flag");
return;
}
_response.error = null;
var skipCallbackInvocation = false;
var update = false;
if (rq.transport === 'streaming' && rq.readyState > 2 && ajaxRequest.readyState === 4) {
_clearState();
reconnectF(false);
return;
}
rq.readyState = ajaxRequest.readyState;
if (rq.transport === 'streaming' && ajaxRequest.readyState >= 3) {
update = true;
} else if (rq.transport === 'long-polling' && ajaxRequest.readyState === 4) {
update = true;
}
_timeout(_request);
if (rq.transport !== 'polling') {
// MSIE 9 and lower status can be higher than 1000, Chrome can be 0
var status = 200;
if (ajaxRequest.readyState === 4) {
status = ajaxRequest.status > 1000 ? 0 : ajaxRequest.status;
}
if (!rq.reconnectOnServerError && (status >= 300 && status < 600)) {
_onError(status, ajaxRequest.statusText);
return;
}
if (status >= 300 || status === 0) {
disconnected();
return;
}
// Firefox incorrectly send statechange 0->2 when a reconnect attempt fails. The above checks ensure that onopen is not called for these
if ((!rq.enableProtocol || !request.firstMessage) && ajaxRequest.readyState === 2) {
// Firefox incorrectly send statechange 0->2 when a reconnect attempt fails. The above checks ensure that onopen is not called for these
// In that case, ajaxRequest.onerror will be called just after onreadystatechange is called, so we delay the trigger until we are
// guarantee the connection is well established.
if (atmosphere.util.browser.mozilla && _response.ffTryingReconnect) {
_response.ffTryingReconnect = false;
setTimeout(function () {
if (!_response.ffTryingReconnect) {
_triggerOpen(rq);
}
}, 500);
} else {
_triggerOpen(rq);
}
}
} else if (ajaxRequest.readyState === 4) {
update = true;
}
if (update) {
var responseText = ajaxRequest.responseText;
_response.errorHandled = false;
// IE behave the same way when resuming long-polling or when the server goes down.
if (rq.transport === 'long-polling' && atmosphere.util.trim(responseText).length === 0) {
// For browser that aren't support onabort
if (!ajaxRequest.hasData) {
reconnectF(true);
} else {
ajaxRequest.hasData = false;
}
return;
}
ajaxRequest.hasData = true;
_readHeaders(ajaxRequest, _request);
if (rq.transport === 'streaming') {
if (!atmosphere.util.browser.opera) {
var message = responseText.substring(rq.lastIndex, responseText.length);
skipCallbackInvocation = _trackMessageSize(message, rq, _response);
rq.lastIndex = responseText.length;
if (skipCallbackInvocation) {
return;
}
} else {
atmosphere.util.iterate(function () {
if (_response.status !== 500 && ajaxRequest.responseText.length > rq.lastIndex) {
try {
_response.status = ajaxRequest.status;
_response.headers = atmosphere.util.parseHeaders(ajaxRequest.getAllResponseHeaders());
_readHeaders(ajaxRequest, _request);
} catch (e) {
_response.status = 404;
}
_timeout(_request);
_response.state = "messageReceived";
var message = ajaxRequest.responseText.substring(rq.lastIndex);
rq.lastIndex = ajaxRequest.responseText.length;
skipCallbackInvocation = _trackMessageSize(message, rq, _response);
if (!skipCallbackInvocation) {
_invokeCallback();
}
if (_verifyStreamingLength(ajaxRequest, rq)) {
_reconnectOnMaxStreamingLength(ajaxRequest, rq);
return;
}
} else if (_response.status > 400) {
// Prevent replaying the last message.
rq.lastIndex = ajaxRequest.responseText.length;
return false;
}
}, 0);
}
} else {
skipCallbackInvocation = _trackMessageSize(responseText, rq, _response);
}
var closeStream = _verifyStreamingLength(ajaxRequest, rq);
try {
_response.status = ajaxRequest.status;
_response.headers = atmosphere.util.parseHeaders(ajaxRequest.getAllResponseHeaders());
_readHeaders(ajaxRequest, rq);
} catch (e) {
_response.status = 404;
}
if (rq.suspend) {
_response.state = _response.status === 0 ? "closed" : "messageReceived";
} else {
_response.state = "messagePublished";
}
var isAllowedToReconnect = !closeStream && request.transport !== 'streaming' && request.transport !== 'polling';
if (isAllowedToReconnect && !rq.executeCallbackBeforeReconnect) {
_reconnect(ajaxRequest, rq, rq.pollingInterval);
}
if (_response.responseBody.length !== 0 && !skipCallbackInvocation)
_invokeCallback();
if (isAllowedToReconnect && rq.executeCallbackBeforeReconnect) {
_reconnect(ajaxRequest, rq, rq.pollingInterval);
}
if (closeStream) {
_reconnectOnMaxStreamingLength(ajaxRequest, rq);
}
}
};
try {
ajaxRequest.send(rq.data);
_subscribed = true;
} catch (e) {
atmosphere.util.log(rq.logLevel, ["Unable to connect to " + rq.url]);
_onError(0, e);
}
} else {
if (rq.logLevel === 'debug') {
atmosphere.util.log(rq.logLevel, ["Max re-connection reached."]);
}
_onError(0, "maxRequest reached");
}
}
function _reconnectOnMaxStreamingLength(ajaxRequest, rq) {
_response.messages = [];
rq.isReopen = true;
_close();
_abortingConnection = false;
_reconnect(ajaxRequest, rq, 500);
}
/**
* Do ajax request.
*
* @param ajaxRequest Ajax request.
* @param request Request parameters.
* @param create If ajax request has to be open.
*/
function _doRequest(ajaxRequest, request, create) {
// Prevent Android to cache request
var url = request.url;
if (request.dispatchUrl != null && request.method === 'POST') {
url += request.dispatchUrl;
}
url = _attachHeaders(request, url);
url = atmosphere.util.prepareURL(url);
if (create) {
ajaxRequest.open(request.method, url, request.async);
if (request.connectTimeout > 0) {
request.id = setTimeout(function () {
if (request.requestCount === 0) {
_clearState();
_prepareCallback("Connect timeout", "closed", 200, request.transport);
}
}, request.connectTimeout);
}
}
if (_request.withCredentials && _request.transport !== 'websocket') {
if ("withCredentials" in ajaxRequest) {
ajaxRequest.withCredentials = true;
}
}
if (!_request.dropHeaders) {
ajaxRequest.setRequestHeader("X-Atmosphere-Framework", atmosphere.version);
ajaxRequest.setRequestHeader("X-Atmosphere-Transport", request.transport);
if (request.heartbeat !== null && request.heartbeat.server !== null) {
ajaxRequest.setRequestHeader("X-Heartbeat-Server", ajaxRequest.heartbeat.server);
}
if (request.trackMessageLength) {
ajaxRequest.setRequestHeader("X-Atmosphere-TrackMessageSize", "true");
}
ajaxRequest.setRequestHeader("X-Atmosphere-tracking-id", request.uuid);
atmosphere.util.each(request.headers, function (name, value) {
var h = atmosphere.util.isFunction(value) ? value.call(this, ajaxRequest, request, create, _response) : value;
if (h != null) {
ajaxRequest.setRequestHeader(name, h);
}
});
}
if (request.contentType !== '') {
ajaxRequest.setRequestHeader("Content-Type", request.contentType);
}
}
function _reconnect(ajaxRequest, request, delay) {
if (_response.closedByClientTimeout) {
return;
}
if (request.reconnect || (request.suspend && _subscribed)) {
var status = 0;
if (ajaxRequest && ajaxRequest.readyState > 1) {
status = ajaxRequest.status > 1000 ? 0 : ajaxRequest.status;
}
_response.status = status === 0 ? 204 : status;
_response.reason = status === 0 ? "Server resumed the connection or down." : "OK";
clearTimeout(request.id);
if (request.reconnectId) {
clearTimeout(request.reconnectId);
delete request.reconnectId;
}
if (delay > 0) {
// For whatever reason, never cancel a reconnect timeout as it is mandatory to reconnect.
_request.reconnectId = setTimeout(function () {
_executeRequest(request);
}, delay);
} else {
_executeRequest(request);
}
}
}
function _tryingToReconnect(response) {
response.state = 're-connecting';
_invokeFunction(response);
}
function _openAfterResume(response) {
response.state = 'openAfterResume';
_invokeFunction(response);
response.state = 'messageReceived';
}
function _ieXDR(request) {
if (request.transport !== "polling") {
_ieStream = _configureXDR(request);
_ieStream.open();
} else {
_configureXDR(request).open();
}
}
function _configureXDR(request) {
var rq = _request;
if ((request != null) && (typeof (request) !== 'undefined')) {
rq = request;
}
var transport = rq.transport;
var lastIndex = 0;
var xdr = new window.XDomainRequest();
var reconnect = function () {
if (rq.transport === "long-polling" && (rq.reconnect && (rq.maxRequest === -1 || rq.requestCount++ < rq.maxRequest))) {
xdr.status = 200;
_ieXDR(rq);
}
};
var rewriteURL = rq.rewriteURL || function (url) {
// Maintaining session by rewriting URL
// http://stackoverflow.com/questions/6453779/maintaining-session-by-rewriting-url
var match = /(?:^|;\s*)(JSESSIONID|PHPSESSID)=([^;]*)/.exec(document.cookie);
switch (match && match[1]) {
case "JSESSIONID":
return url.replace(/;jsessionid=[^\?]*|(\?)|$/, ";jsessionid=" + match[2] + "$1");
case "PHPSESSID":
return url.replace(/\?PHPSESSID=[^&]*&?|\?|$/, "?PHPSESSID=" + match[2] + "&").replace(/&$/, "");
}
return url;
};
// Handles open and message event
xdr.onprogress = function () {
handle(xdr);
};
// Handles error event
xdr.onerror = function () {
// If the server doesn't send anything back to XDR will fail with polling
if (rq.transport !== 'polling') {
_clearState();
if (_requestCount++ < rq.maxReconnectOnClose) {
if (rq.reconnectInterval > 0) {
rq.reconnectId = setTimeout(function () {
_open('re-connecting', request.transport, request);
_ieXDR(rq);
}, rq.reconnectInterval);
} else {
_open('re-connecting', request.transport, request);
_ieXDR(rq);
}
} else {
_onError(0, "maxReconnectOnClose reached");
}
}
};
// Handles close event
xdr.onload = function () {
};
var handle = function (xdr) {
clearTimeout(rq.id);
var message = xdr.responseText;
message = message.substring(lastIndex);
lastIndex += message.length;
if (transport !== 'polling') {
_timeout(rq);
var skipCallbackInvocation = _trackMessageSize(message, rq, _response);
if (transport === 'long-polling' && atmosphere.util.trim(message).length === 0)
return;
if (rq.executeCallbackBeforeReconnect) {
reconnect();
}
if (!skipCallbackInvocation) {
_prepareCallback(_response.responseBody, "messageReceived", 200, transport);
}
if (!rq.executeCallbackBeforeReconnect) {
reconnect();
}
}
};
return {
open: function () {
var url = rq.url;
if (rq.dispatchUrl != null) {
url += rq.dispatchUrl;
}
url = _attachHeaders(rq, url);
xdr.open(rq.method, rewriteURL(url));
if (rq.method === 'GET') {
xdr.send();
} else {
xdr.send(rq.data);
}
if (rq.connectTimeout > 0) {
rq.id = setTimeout(function () {
if (rq.requestCount === 0) {
_clearState();
_prepareCallback("Connect timeout", "closed", 200, rq.transport);
}
}, rq.connectTimeout);
}
},
close: function () {
xdr.abort();
}
};
}
function _ieStreaming(request) {
_ieStream = _configureIE(request);
_ieStream.open();
}
function _configureIE(request) {
var rq = _request;
if ((request != null) && (typeof (request) !== 'undefined')) {
rq = request;
}
var stop;
var doc = new window.ActiveXObject("htmlfile");
doc.open();
doc.close();
var url = rq.url;
if (rq.dispatchUrl != null) {
url += rq.dispatchUrl;
}
if (rq.transport !== 'polling') {
_response.transport = rq.transport;
}
return {
open: function () {
var iframe = doc.createElement("iframe");
url = _attachHeaders(rq);
if (rq.data !== '') {
url += "&X-Atmosphere-Post-Body=" + encodeURIComponent(rq.data);
}
// Finally attach a timestamp to prevent Android and IE caching.
url = atmosphere.util.prepareURL(url);
iframe.src = url;
doc.body.appendChild(iframe);
// For the server to respond in a consistent format regardless of user agent, we polls response text
var cdoc = iframe.contentDocument || iframe.contentWindow.document;
stop = atmosphere.util.iterate(function () {
try {
if (!cdoc.firstChild) {
return;
}
var res = cdoc.body ? cdoc.body.lastChild : cdoc;
var readResponse = function () {
// Clones the element not to disturb the original one
var clone = res.cloneNode(true);
// If the last character is a carriage return or a line feed, IE ignores it in the innerText property
// therefore, we add another non-newline character to preserve it
clone.appendChild(cdoc.createTextNode("."));
var text = clone.innerText;
text = text.substring(0, text.length - 1);
return text;
};
// To support text/html content type
if (!cdoc.body || !cdoc.body.firstChild || cdoc.body.firstChild.nodeName.toLowerCase() !== "pre") {
// Injects a plaintext element which renders text without interpreting the HTML and cannot be stopped
// it is deprecated in HTML5, but still works
var head = cdoc.head || cdoc.getElementsByTagName("head")[0] || cdoc.documentElement || cdoc;
var script = cdoc.createElement("script");
script.text = "document.write('<![CDATA[')";
head.insertBefore(script, head.firstChild);
head.removeChild(script);
// The plaintext element will be the response container
res = cdoc.body.lastChild;
}
if (rq.closed) {
rq.isReopen = true;
}
// Handles message and close event
stop = atmosphere.util.iterate(function () {
var text = readResponse();
if (text.length > rq.lastIndex) {
_timeout(_request);
_response.status = 200;
_response.error = null;
// Empties response every time that it is handled
res.innerText = "";
var skipCallbackInvocation = _trackMessageSize(text, rq, _response);
if (skipCallbackInvocation) {
return "";
}
_prepareCallback(_response.responseBody, "messageReceived", 200, rq.transport);
}
rq.lastIndex = 0;
if (cdoc.readyState === "complete") {
_invokeClose(true);
_open('re-connecting', rq.transport, rq);
if (rq.reconnectInterval > 0) {
rq.reconnectId = setTimeout(function () {
_ieStreaming(rq);
}, rq.reconnectInterval);
} else {
_ieStreaming(rq);
}
return false;
}
}, null);
return false;
} catch (err) {
_response.error = true;
_open('re-connecting', rq.transport, rq);
if (_requestCount++ < rq.maxReconnectOnClose) {
if (rq.reconnectInterval > 0) {
rq.reconnectId = setTimeout(function () {
_ieStreaming(rq);
}, rq.reconnectInterval);
} else {
_ieStreaming(rq);
}
} else {
_onError(0, "maxReconnectOnClose reached");
}
doc.execCommand("Stop");
doc.close();
return false;
}
});
},
close: function () {
if (stop) {
stop();
}
doc.execCommand("Stop");
_invokeClose(true);
}
};
}
/**
* Send message. <br>
* Will be automatically dispatch to other connected.
*
* @param {Object, string} Message to send.
* @private
*/
function _push(message) {
if (_localStorageService != null) {
_pushLocal(message);
} else if (_activeRequest != null || _sse != null) {
_pushAjaxMessage(message);
} else if (_ieStream != null) {
_pushIE(message);
} else if (_jqxhr != null) {
_pushJsonp(message);
} else if (_websocket != null) {
_pushWebSocket(message);
} else {
_onError(0, "No suspended connection available");
atmosphere.util.error("No suspended connection available. Make sure atmosphere.subscribe has been called and request.onOpen invoked before trying to push data");
}
}
function _pushOnClose(message, rq) {
if (!rq) {
rq = _getPushRequest(message);
}
rq.transport = "polling";
rq.method = "GET";
rq.withCredentials = false;
rq.reconnect = false;
rq.force = true;
rq.suspend = false;
rq.timeout = 1000;
_executeRequest(rq);
}
function _pushLocal(message) {
_localStorageService.send(message);
}
function _intraPush(message) {
// IE 9 will crash if not.
if (message.length === 0)
return;
try {
if (_localStorageService) {
_localStorageService.localSend(message);
} else if (_storageService) {
_storageService.signal("localMessage", atmosphere.util.stringifyJSON({
id: guid,
event: message
}));
}
} catch (err) {
atmosphere.util.error(err);
}
}
/**
* Send a message using currently opened ajax request (using http-streaming or long-polling). <br>
*
* @param {string, Object} Message to send. This is an object, string message is saved in data member.
* @private
*/
function _pushAjaxMessage(message) {
var rq = _getPushRequest(message);
_executeRequest(rq);
}
/**
* Send a message using currently opened ie streaming (using http-streaming or long-polling). <br>
*
* @param {string, Object} Message to send. This is an object, string message is saved in data member.
* @private
*/
function _pushIE(message) {
if (_request.enableXDR && atmosphere.util.checkCORSSupport()) {
var rq = _getPushRequest(message);
// Do not reconnect since we are pushing.
rq.reconnect = false;
_jsonp(rq);
} else {
_pushAjaxMessage(message);
}
}
/**
* Send a message using jsonp transport. <br>
*
* @param {string, Object} Message to send. This is an object, string message is saved in data member.
* @private
*/
function _pushJsonp(message) {
_pushAjaxMessage(message);
}
function _getStringMessage(message) {
var msg = message;
if (typeof (msg) === 'object') {
msg = message.data;
}
return msg;
}
/**
* Build request use to push message using method 'POST' <br>. Transport is defined as 'polling' and 'suspend' is set to false.
*
* @return {Object} Request object use to push message.
* @private
*/
function _getPushRequest(message) {
var msg = _getStringMessage(message);
var rq = {
connected: false,
timeout: 60000,
method: 'POST',
url: _request.url,
contentType: _request.contentType,
headers: _request.headers,
reconnect: true,
callback: null,
data: msg,
suspend: false,
maxRequest: -1,
logLevel: 'info',
requestCount: 0,
withCredentials: _request.withCredentials,
async: _request.async,
transport: 'polling',
isOpen: true,
attachHeadersAsQueryString: true,
enableXDR: _request.enableXDR,
uuid: _request.uuid,
dispatchUrl: _request.dispatchUrl,
enableProtocol: false,
messageDelimiter: '|',
trackMessageLength: _request.trackMessageLength,
maxReconnectOnClose: _request.maxReconnectOnClose,
heartbeatTimer: _request.heartbeatTimer,
heartbeat: _request.heartbeat
};
if (typeof (message) === 'object') {
rq = atmosphere.util.extend(rq, message);
}
return rq;
}
/**
* Send a message using currently opened websocket. <br>
*
*/
function _pushWebSocket(message) {
var msg = atmosphere.util.isBinary(message) ? message : _getStringMessage(message);
var data;
try {
if (_request.dispatchUrl != null) {
data = _request.webSocketPathDelimiter + _request.dispatchUrl + _request.webSocketPathDelimiter + msg;
} else {
data = msg;
}
if (!_websocket.canSendMessage) {
atmosphere.util.error("WebSocket not connected.");
return;
}
_websocket.send(data);
} catch (e) {
_websocket.onclose = function (message) {
};
_clearState();
_reconnectWithFallbackTransport("Websocket failed. Downgrading to " + _request.fallbackTransport + " and resending " + message);
_pushAjaxMessage(message);
}
}
function _localMessage(message) {
var m = atmosphere.util.parseJSON(message);
if (m.id !== guid) {
if (typeof (_request.onLocalMessage) !== 'undefined') {
_request.onLocalMessage(m.event);
} else if (typeof (atmosphere.util.onLocalMessage) !== 'undefined') {
atmosphere.util.onLocalMessage(m.event);
}
}
}
function _prepareCallback(messageBody, state, errorCode, transport) {
_response.responseBody = messageBody;
_response.transport = transport;
_response.status = errorCode;
_response.state = state;
_invokeCallback();
}
function _readHeaders(xdr, request) {
if (!request.readResponsesHeaders) {
if (!request.enableProtocol) {
request.uuid = guid;
}
}
else {
try {
var tempUUID = xdr.getResponseHeader('X-Atmosphere-tracking-id');
if (tempUUID && tempUUID != null) {
request.uuid = tempUUID.split(" ").pop();
}
} catch (e) {
}
}
}
function _invokeFunction(response) {
_f(response, _request);
// Global
_f(response, atmosphere.util);
}
function _f(response, f) {
switch (response.state) {
case "messageReceived":
_debug("Firing onMessage");
_requestCount = 0;
if (typeof (f.onMessage) !== 'undefined')
f.onMessage(response);
if (typeof (f.onmessage) !== 'undefined')
f.onmessage(response);
break;
case "error":
var dbgReasonPhrase = (typeof(response.reasonPhrase) != 'undefined') ? response.reasonPhrase : 'n/a';
_debug("Firing onError, reasonPhrase: " + dbgReasonPhrase);
if (typeof (f.onError) !== 'undefined')
f.onError(response);
if (typeof (f.onerror) !== 'undefined')
f.onerror(response);
break;
case "opening":
delete _request.closed;
_debug("Firing onOpen");
if (typeof (f.onOpen) !== 'undefined')
f.onOpen(response);
if (typeof (f.onopen) !== 'undefined')
f.onopen(response);
break;
case "messagePublished":
_debug("Firing messagePublished");
if (typeof (f.onMessagePublished) !== 'undefined')
f.onMessagePublished(response);
break;
case "re-connecting":
_debug("Firing onReconnect");
if (typeof (f.onReconnect) !== 'undefined')
f.onReconnect(_request, response);
break;
case "closedByClient":
_debug("Firing closedByClient");
if (typeof (f.onClientTimeout) !== 'undefined')
f.onClientTimeout(_request);
break;
case "re-opening":
delete _request.closed;
_debug("Firing onReopen");
if (typeof (f.onReopen) !== 'undefined')
f.onReopen(_request, response);
break;
case "fail-to-reconnect":
_debug("Firing onFailureToReconnect");
if (typeof (f.onFailureToReconnect) !== 'undefined')
f.onFailureToReconnect(_request, response);
break;
case "unsubscribe":
case "closed":
var closed = typeof (_request.closed) !== 'undefined' ? _request.closed : false;
if (!closed) {
_debug("Firing onClose (" + response.state + " case)");
if (typeof (f.onClose) !== 'undefined') {
f.onClose(response);
}
if (typeof (f.onclose) !== 'undefined') {
f.onclose(response);
}
} else {
_debug("Request already closed, not firing onClose (" + response.state + " case)");
}
_request.closed = true;
break;
case "openAfterResume":
if (typeof (f.onOpenAfterResume) !== 'undefined')
f.onOpenAfterResume(_request);
break;
}
}
function _invokeClose(wasOpen) {
if (_response.state !== 'closed') {
_response.state = 'closed';
_response.responseBody = "";
_response.messages = [];
_response.status = !wasOpen ? 501 : 200;
_invokeCallback();
}
}
/**
* Invoke request callbacks.
*
* @private
*/
function _invokeCallback() {
var call = function (index, func) {
func(_response);
};
if (_localStorageService == null && _localSocketF != null) {
_localSocketF(_response.responseBody);
}
_request.reconnect = _request.mrequest;
var isString = typeof (_response.responseBody) === 'string';
var messages = (isString && _request.trackMessageLength) ? (_response.messages.length > 0 ? _response.messages : ['']) : new Array(
_response.responseBody);
for (var i = 0; i < messages.length; i++) {
if (messages.length > 1 && messages[i].length === 0) {
continue;
}
_response.responseBody = (isString) ? atmosphere.util.trim(messages[i]) : messages[i];
if (_localStorageService == null && _localSocketF != null) {
_localSocketF(_response.responseBody);
}
if ((_response.responseBody.length === 0 ||
(isString && _heartbeatPadding === _response.responseBody)) && _response.state === "messageReceived") {
continue;
}
_invokeFunction(_response);
// Invoke global callbacks
if (callbacks.length > 0) {
if (_canLog('debug')) {
atmosphere.util.debug("Invoking " + callbacks.length + " global callbacks: " + _response.state);
}
try {
atmosphere.util.each(callbacks, call);
} catch (e) {
atmosphere.util.log(_request.logLevel, ["Callback exception" + e]);
}
}
// Invoke request callback
if (typeof (_request.callback) === 'function') {
if (_canLog('debug')) {
atmosphere.util.debug("Invoking request callbacks");
}
try {
_request.callback(_response);
} catch (e) {
atmosphere.util.log(_request.logLevel, ["Callback exception" + e]);
}
}
}
}
this.subscribe = function (options) {
_subscribe(options);
_execute();
};
this.execute = function () {
_execute();
};
this.close = function () {
_close();
};
this.disconnect = function () {
_disconnect();
};
this.getUrl = function () {
return _request.url;
};
this.push = function (message, dispatchUrl) {
if (dispatchUrl != null) {
var originalDispatchUrl = _request.dispatchUrl;
_request.dispatchUrl = dispatchUrl;
_push(message);
_request.dispatchUrl = originalDispatchUrl;
} else {
_push(message);
}
};
this.getUUID = function () {
return _request.uuid;
};
this.pushLocal = function (message) {
_intraPush(message);
};
this.enableProtocol = function (message) {
return _request.enableProtocol;
};
this.init = function () {
_init();
};
this.request = _request;
this.response = _response;
}
};
atmosphere.subscribe = function (url, callback, request) {
if (typeof (callback) === 'function') {
atmosphere.addCallback(callback);
}
if (typeof (url) !== "string") {
request = url;
} else {
request.url = url;
}
// https://github.com/Atmosphere/atmosphere-javascript/issues/58
uuid = ((typeof (request) !== 'undefined') && typeof (request.uuid) !== 'undefined') ? request.uuid : 0;
var rq = new atmosphere.AtmosphereRequest(request);
rq.execute();
requests[requests.length] = rq;
return rq;
};
atmosphere.unsubscribe = function () {
if (requests.length > 0) {
var requestsClone = [].concat(requests);
for (var i = 0; i < requestsClone.length; i++) {
var rq = requestsClone[i];
rq.close();
clearTimeout(rq.response.request.id);
if (rq.heartbeatTimer) {
clearTimeout(rq.heartbeatTimer);
}
}
}
requests = [];
callbacks = [];
};
atmosphere.unsubscribeUrl = function (url) {
var idx = -1;
if (requests.length > 0) {
for (var i = 0; i < requests.length; i++) {
var rq = requests[i];
// Suppose you can subscribe once to an url
if (rq.getUrl() === url) {
rq.close();
clearTimeout(rq.response.request.id);
if (rq.heartbeatTimer) {
clearTimeout(rq.heartbeatTimer);
}
idx = i;
break;
}
}
}
if (idx >= 0) {
requests.splice(idx, 1);
}
};
atmosphere.addCallback = function (func) {
if (atmosphere.util.inArray(func, callbacks) === -1) {
callbacks.push(func);
}
};
atmosphere.removeCallback = function (func) {
var index = atmosphere.util.inArray(func, callbacks);
if (index !== -1) {
callbacks.splice(index, 1);
}
};
atmosphere.util = {
browser: {},
parseHeaders: function (headerString) {
var match, rheaders = /^(.*?):[ \t]*([^\r\n]*)\r?$/mg, headers = {};
while (match = rheaders.exec(headerString)) {
headers[match[1]] = match[2];
}
return headers;
},
now: function () {
return new Date().getTime();
},
isArray: function (array) {
return Object.prototype.toString.call(array) === "[object Array]";
},
inArray: function (elem, array) {
if (!Array.prototype.indexOf) {
var len = array.length;
for (var i = 0; i < len; ++i) {
if (array[i] === elem) {
return i;
}
}
return -1;
}
return array.indexOf(elem);
},
isBinary: function (data) {
// True if data is an instance of Blob, ArrayBuffer or ArrayBufferView
return /^\[object\s(?:Blob|ArrayBuffer|.+Array)\]$/.test(Object.prototype.toString.call(data));
},
isFunction: function (fn) {
return Object.prototype.toString.call(fn) === "[object Function]";
},
getAbsoluteURL: function (url) {
if (typeof (document.createElement) === 'undefined') {
// assuming the url to be already absolute when DOM is not supported
return url;
}
var div = document.createElement("div");
// Uses an innerHTML property to obtain an absolute URL
div.innerHTML = '<a href="' + url + '"/>';
// encodeURI and decodeURI are needed to normalize URL between IE and non-IE,
// since IE doesn't encode the href property value and return it - http://jsfiddle.net/Yq9M8/1/
return encodeURI(decodeURI(div.firstChild.href));
},
prepareURL: function (url) {
// Attaches a time stamp to prevent caching
var ts = atmosphere.util.now();
var ret = url.replace(/([?&])_=[^&]*/, "$1_=" + ts);
return ret + (ret === url ? (/\?/.test(url) ? "&" : "?") + "_=" + ts : "");
},
trim: function (str) {
if (!String.prototype.trim) {
return str.toString().replace(/(?:(?:^|\n)\s+|\s+(?:$|\n))/g, "").replace(/\s+/g, " ");
} else {
return str.toString().trim();
}
},
param: function (params) {
var prefix, s = [];
function add(key, value) {
value = atmosphere.util.isFunction(value) ? value() : (value == null ? "" : value);
s.push(encodeURIComponent(key) + "=" + encodeURIComponent(value));
}
function buildParams(prefix, obj) {
var name;
if (atmosphere.util.isArray(obj)) {
atmosphere.util.each(obj, function (i, v) {
if (/\[\]$/.test(prefix)) {
add(prefix, v);
} else {
buildParams(prefix + "[" + (typeof v === "object" ? i : "") + "]", v);
}
});
} else if (Object.prototype.toString.call(obj) === "[object Object]") {
for (name in obj) {
buildParams(prefix + "[" + name + "]", obj[name]);
}
} else {
add(prefix, obj);
}
}
for (prefix in params) {
buildParams(prefix, params[prefix]);
}
return s.join("&").replace(/%20/g, "+");
},
storage: function () {
try {
return !!(window.localStorage && window.StorageEvent);
} catch (e) {
//Firefox throws an exception here, see
//https://bugzilla.mozilla.org/show_bug.cgi?id=748620
return false;
}
},
iterate: function (fn, interval) {
var timeoutId;
// Though the interval is 0 for real-time application, there is a delay between setTimeout calls
// For detail, see https://developer.mozilla.org/en/window.setTimeout#Minimum_delay_and_timeout_nesting
interval = interval || 0;
(function loop() {
timeoutId = setTimeout(function () {
if (fn() === false) {
return;
}
loop();
}, interval);
})();
return function () {
clearTimeout(timeoutId);
};
},
each: function (obj, callback, args) {
if (!obj) return;
var value, i = 0, length = obj.length, isArray = atmosphere.util.isArray(obj);
if (args) {
if (isArray) {
for (; i < length; i++) {
value = callback.apply(obj[i], args);
if (value === false) {
break;
}
}
} else {
for (i in obj) {
value = callback.apply(obj[i], args);
if (value === false) {
break;
}
}
}
// A special, fast, case for the most common use of each
} else {
if (isArray) {
for (; i < length; i++) {
value = callback.call(obj[i], i, obj[i]);
if (value === false) {
break;
}
}
} else {
for (i in obj) {
value = callback.call(obj[i], i, obj[i]);
if (value === false) {
break;
}
}
}
}
return obj;
},
extend: function (target) {
var i, options, name;
for (i = 1; i < arguments.length; i++) {
if ((options = arguments[i]) != null) {
for (name in options) {
target[name] = options[name];
}
}
}
return target;
},
on: function (elem, type, fn) {
if (elem.addEventListener) {
elem.addEventListener(type, fn, false);
} else if (elem.attachEvent) {
elem.attachEvent("on" + type, fn);
}
},
off: function (elem, type, fn) {
if (elem.removeEventListener) {
elem.removeEventListener(type, fn, false);
} else if (elem.detachEvent) {
elem.detachEvent("on" + type, fn);
}
},
log: function (level, args) {
if (window.console) {
var logger = window.console[level];
if (typeof logger === 'function') {
logger.apply(window.console, args);
}
}
},
warn: function () {
atmosphere.util.log('warn', arguments);
},
info: function () {
atmosphere.util.log('info', arguments);
},
debug: function () {
atmosphere.util.log('debug', arguments);
},
error: function () {
atmosphere.util.log('error', arguments);
},
xhr: function () {
try {
return new window.XMLHttpRequest();
} catch (e1) {
try {
return new window.ActiveXObject("Microsoft.XMLHTTP");
} catch (e2) {
}
}
},
parseJSON: function (data) {
return !data ? null : window.JSON && window.JSON.parse ? window.JSON.parse(data) : new Function("return " + data)();
},
// http://github.com/flowersinthesand/stringifyJSON
stringifyJSON: function (value) {
var escapable = /[\\\"\x00-\x1f\x7f-\x9f\u00ad\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]/g, meta = {
'\b': '\\b',
'\t': '\\t',
'\n': '\\n',
'\f': '\\f',
'\r': '\\r',
'"': '\\"',
'\\': '\\\\'
};
function quote(string) {
return '"' + string.replace(escapable, function (a) {
var c = meta[a];
return typeof c === "string" ? c : "\\u" + ("0000" + a.charCodeAt(0).toString(16)).slice(-4);
}) + '"';
}
function f(n) {
return n < 10 ? "0" + n : n;
}
return window.JSON && window.JSON.stringify ? window.JSON.stringify(value) : (function str(key, holder) {
var i, v, len, partial, value = holder[key], type = typeof value;
if (value && typeof value === "object" && typeof value.toJSON === "function") {
value = value.toJSON(key);
type = typeof value;
}
switch (type) {
case "string":
return quote(value);
case "number":
return isFinite(value) ? String(value) : "null";
case "boolean":
return String(value);
case "object":
if (!value) {
return "null";
}
switch (Object.prototype.toString.call(value)) {
case "[object Date]":
return isFinite(value.valueOf()) ? '"' + value.getUTCFullYear() + "-" + f(value.getUTCMonth() + 1) + "-"
+ f(value.getUTCDate()) + "T" + f(value.getUTCHours()) + ":" + f(value.getUTCMinutes()) + ":" + f(value.getUTCSeconds())
+ "Z" + '"' : "null";
case "[object Array]":
len = value.length;
partial = [];
for (i = 0; i < len; i++) {
partial.push(str(i, value) || "null");
}
return "[" + partial.join(",") + "]";
default:
partial = [];
for (i in value) {
if (hasOwn.call(value, i)) {
v = str(i, value);
if (v) {
partial.push(quote(i) + ":" + v);
}
}
}
return "{" + partial.join(",") + "}";
}
}
})("", {
"": value
});
},
checkCORSSupport: function () {
if (atmosphere.util.browser.msie && !window.XDomainRequest && +atmosphere.util.browser.version.split(".")[0] < 11) {
return true;
} else if (atmosphere.util.browser.opera && +atmosphere.util.browser.version.split(".") < 12.0) {
return true;
}
// KreaTV 4.1 -> 4.4
else if (atmosphere.util.trim(navigator.userAgent).slice(0, 16) === "KreaTVWebKit/531") {
return true;
}
// KreaTV 3.8
else if (atmosphere.util.trim(navigator.userAgent).slice(-7).toLowerCase() === "kreatel") {
return true;
}
// Force older Android versions to use CORS as some version like 2.2.3 fail otherwise
var ua = navigator.userAgent.toLowerCase();
var androidVersionMatches = ua.match(/.+android ([0-9]{1,2})/i),
majorVersion = parseInt((androidVersionMatches && androidVersionMatches[0]) || -1, 10);
if (!isNaN(majorVersion) && majorVersion > -1 && majorVersion < 3) {
return true;
}
return false;
}
};
guid = atmosphere.util.now();
// Browser sniffing
(function () {
var ua = navigator.userAgent.toLowerCase(),
match = /(chrome)[ \/]([\w.]+)/.exec(ua) ||
/(opera)(?:.*version|)[ \/]([\w.]+)/.exec(ua) ||
/(msie) ([\w.]+)/.exec(ua) ||
/(trident)(?:.*? rv:([\w.]+)|)/.exec(ua) ||
ua.indexOf("android") < 0 && /version\/(.+) (safari)/.exec(ua) ||
ua.indexOf("compatible") < 0 && /(mozilla)(?:.*? rv:([\w.]+)|)/.exec(ua) ||
[];
// Swaps variables
if (match[2] === "safari") {
match[2] = match[1];
match[1] = "safari";
}
atmosphere.util.browser[match[1] || ""] = true;
atmosphere.util.browser.version = match[2] || "0";
atmosphere.util.browser.vmajor = atmosphere.util.browser.version.split(".")[0];
// Trident is the layout engine of the Internet Explorer
// IE 11 has no "MSIE: 11.0" token
if (atmosphere.util.browser.trident) {
atmosphere.util.browser.msie = true;
}
// The storage event of Internet Explorer and Firefox 3 works strangely
if (atmosphere.util.browser.msie || (atmosphere.util.browser.mozilla && +atmosphere.util.browser.version.split(".")[0] === 1)) {
atmosphere.util.storage = false;
}
})();
atmosphere.util.on(window, "unload", function (event) {
atmosphere.util.debug(new Date() + " Atmosphere: " + "unload event");
atmosphere.unsubscribe();
});
atmosphere.util.on(window, "beforeunload", function (event) {
atmosphere.util.debug(new Date() + " Atmosphere: " + "beforeunload event");
// ATMOSPHERE-JAVASCRIPT-143: Delay reconnect to avoid reconnect attempts before an actual unload (we don't know if an unload will happen, yet)
atmosphere._beforeUnloadState = true;
setTimeout(function () {
atmosphere.util.debug(new Date() + " Atmosphere: " + "beforeunload event timeout reached. Reset _beforeUnloadState flag");
atmosphere._beforeUnloadState = false;
}, 5000);
});
// Pressing ESC key in Firefox kills the connection
// for your information, this is fixed in Firefox 20
// https://bugzilla.mozilla.org/show_bug.cgi?id=614304
atmosphere.util.on(window, "keypress", function (event) {
if (event.charCode === 27 || event.keyCode === 27) {
if (event.preventDefault) {
event.preventDefault();
}
}
});
atmosphere.util.on(window, "offline", function () {
atmosphere.util.debug(new Date() + " Atmosphere: offline event");
offline = true;
if (requests.length > 0) {
var requestsClone = [].concat(requests);
for (var i = 0; i < requestsClone.length; i++) {
var rq = requestsClone[i];
if(rq.request.handleOnlineOffline) {
rq.close();
clearTimeout(rq.response.request.id);
if (rq.heartbeatTimer) {
clearTimeout(rq.heartbeatTimer);
}
}
}
}
});
atmosphere.util.on(window, "online", function () {
atmosphere.util.debug(new Date() + " Atmosphere: online event");
if (requests.length > 0) {
for (var i = 0; i < requests.length; i++) {
if(requests[i].request.handleOnlineOffline) {
requests[i].init();
requests[i].execute();
}
}
}
offline = false;
});
return atmosphere;
}));
/* jshint eqnull:true, noarg:true, noempty:true, eqeqeq:true, evil:true, laxbreak:true, undef:true, browser:true, indent:false, maxerr:50 */
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