public/socky/v0.5.0/assets/flashfallback.js
/*!
* Socky JavaScript Library
*
* @version 0.5.0
* @author Bernard Potocki <bernard.potocki@imanel.org>
* @author Stefano Verna <stefano.verna@welaika.com>
* @licence The MIT licence.
* @source http://github.com/socky/socky-client-js
*/
/*!
* This library contains code with the following licences:
*
* web_socket.js:
*
* Copyright: Hiroshi Ichikawa <http://gimite.net/en/>
* License: New BSD License
* Reference: http://dev.w3.org/html5/websockets/
* Reference: http://tools.ietf.org/html/draft-hixie-thewebsocketprotocol
*
* swfobject.js:
*
* SWFObject v2.2 <http://code.google.com/p/swfobject/>
* is released under the MIT License <http://www.opensource.org/licenses/mit-license.php>
*/
/* SWFObject v2.2 <http://code.google.com/p/swfobject/>
is released under the MIT License <http://www.opensource.org/licenses/mit-license.php>
*/
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// Copyright: Hiroshi Ichikawa <http://gimite.net/en/>
// License: New BSD License
// Reference: http://dev.w3.org/html5/websockets/
// Reference: http://tools.ietf.org/html/draft-hixie-thewebsocketprotocol
(function() {
if (window.WebSocket && !window.WEB_SOCKET_FORCE_FLASH) return;
var logger;
if (window.WEB_SOCKET_LOGGER) {
logger = WEB_SOCKET_LOGGER;
} else if (window.console && window.console.log && window.console.error) {
// In some environment, console is defined but console.log or console.error is missing.
logger = window.console;
} else {
logger = {log: function(){ }, error: function(){ }};
}
// swfobject.hasFlashPlayerVersion("10.0.0") doesn't work with Gnash.
if (swfobject.getFlashPlayerVersion().major < 10) {
logger.error("Flash Player >= 10.0.0 is required.");
return;
}
if (location.protocol == "file:") {
logger.error(
"WARNING: web-socket-js doesn't work in file:///... URL " +
"unless you set Flash Security Settings properly. " +
"Open the page via Web server i.e. http://...");
}
/**
* This class represents a faux web socket.
* @param {string} url
* @param {array or string} protocols
* @param {string} proxyHost
* @param {int} proxyPort
* @param {string} headers
*/
WebSocket = function(url, protocols, proxyHost, proxyPort, headers) {
var self = this;
self.__id = WebSocket.__nextId++;
WebSocket.__instances[self.__id] = self;
self.readyState = WebSocket.CONNECTING;
self.bufferedAmount = 0;
self.__events = {};
if (!protocols) {
protocols = [];
} else if (typeof protocols == "string") {
protocols = [protocols];
}
// Uses setTimeout() to make sure __createFlash() runs after the caller sets ws.onopen etc.
// Otherwise, when onopen fires immediately, onopen is called before it is set.
setTimeout(function() {
WebSocket.__addTask(function() {
WebSocket.__flash.create(
self.__id, url, protocols, proxyHost || null, proxyPort || 0, headers || null);
});
}, 0);
};
/**
* Send data to the web socket.
* @param {string} data The data to send to the socket.
* @return {boolean} True for success, false for failure.
*/
WebSocket.prototype.send = function(data) {
if (this.readyState == WebSocket.CONNECTING) {
throw "INVALID_STATE_ERR: Web Socket connection has not been established";
}
// We use encodeURIComponent() here, because FABridge doesn't work if
// the argument includes some characters. We don't use escape() here
// because of this:
// https://developer.mozilla.org/en/Core_JavaScript_1.5_Guide/Functions#escape_and_unescape_Functions
// But it looks decodeURIComponent(encodeURIComponent(s)) doesn't
// preserve all Unicode characters either e.g. "\uffff" in Firefox.
// Note by wtritch: Hopefully this will not be necessary using ExternalInterface. Will require
// additional testing.
var result = WebSocket.__flash.send(this.__id, encodeURIComponent(data));
if (result < 0) { // success
return true;
} else {
this.bufferedAmount += result;
return false;
}
};
/**
* Close this web socket gracefully.
*/
WebSocket.prototype.close = function() {
if (this.readyState == WebSocket.CLOSED || this.readyState == WebSocket.CLOSING) {
return;
}
this.readyState = WebSocket.CLOSING;
WebSocket.__flash.close(this.__id);
};
/**
* Implementation of {@link <a href="http://www.w3.org/TR/DOM-Level-2-Events/events.html#Events-registration">DOM 2 EventTarget Interface</a>}
*
* @param {string} type
* @param {function} listener
* @param {boolean} useCapture
* @return void
*/
WebSocket.prototype.addEventListener = function(type, listener, useCapture) {
if (!(type in this.__events)) {
this.__events[type] = [];
}
this.__events[type].push(listener);
};
/**
* Implementation of {@link <a href="http://www.w3.org/TR/DOM-Level-2-Events/events.html#Events-registration">DOM 2 EventTarget Interface</a>}
*
* @param {string} type
* @param {function} listener
* @param {boolean} useCapture
* @return void
*/
WebSocket.prototype.removeEventListener = function(type, listener, useCapture) {
if (!(type in this.__events)) return;
var events = this.__events[type];
for (var i = events.length - 1; i >= 0; --i) {
if (events[i] === listener) {
events.splice(i, 1);
break;
}
}
};
/**
* Implementation of {@link <a href="http://www.w3.org/TR/DOM-Level-2-Events/events.html#Events-registration">DOM 2 EventTarget Interface</a>}
*
* @param {Event} event
* @return void
*/
WebSocket.prototype.dispatchEvent = function(event) {
var events = this.__events[event.type] || [];
for (var i = 0; i < events.length; ++i) {
events[i](event);
}
var handler = this["on" + event.type];
if (handler) handler(event);
};
/**
* Handles an event from Flash.
* @param {Object} flashEvent
*/
WebSocket.prototype.__handleEvent = function(flashEvent) {
if ("readyState" in flashEvent) {
this.readyState = flashEvent.readyState;
}
if ("protocol" in flashEvent) {
this.protocol = flashEvent.protocol;
}
var jsEvent;
if (flashEvent.type == "open" || flashEvent.type == "error") {
jsEvent = this.__createSimpleEvent(flashEvent.type);
} else if (flashEvent.type == "close") {
// TODO implement jsEvent.wasClean
jsEvent = this.__createSimpleEvent("close");
} else if (flashEvent.type == "message") {
var data = decodeURIComponent(flashEvent.message);
jsEvent = this.__createMessageEvent("message", data);
} else {
throw "unknown event type: " + flashEvent.type;
}
this.dispatchEvent(jsEvent);
};
WebSocket.prototype.__createSimpleEvent = function(type) {
if (document.createEvent && window.Event) {
var event = document.createEvent("Event");
event.initEvent(type, false, false);
return event;
} else {
return {type: type, bubbles: false, cancelable: false};
}
};
WebSocket.prototype.__createMessageEvent = function(type, data) {
if (document.createEvent && window.MessageEvent && !window.opera) {
var event = document.createEvent("MessageEvent");
event.initMessageEvent("message", false, false, data, null, null, window, null);
return event;
} else {
// IE and Opera, the latter one truncates the data parameter after any 0x00 bytes.
return {type: type, data: data, bubbles: false, cancelable: false};
}
};
/**
* Define the WebSocket readyState enumeration.
*/
WebSocket.CONNECTING = 0;
WebSocket.OPEN = 1;
WebSocket.CLOSING = 2;
WebSocket.CLOSED = 3;
WebSocket.__flash = null;
WebSocket.__instances = {};
WebSocket.__tasks = [];
WebSocket.__nextId = 0;
/**
* Load a new flash security policy file.
* @param {string} url
*/
WebSocket.loadFlashPolicyFile = function(url){
WebSocket.__addTask(function() {
WebSocket.__flash.loadManualPolicyFile(url);
});
};
/**
* Loads WebSocketMain.swf and creates WebSocketMain object in Flash.
*/
WebSocket.__initialize = function() {
if (WebSocket.__flash) return;
if (WebSocket.__swfLocation) {
// For backword compatibility.
window.WEB_SOCKET_SWF_LOCATION = WebSocket.__swfLocation;
}
if (!window.WEB_SOCKET_SWF_LOCATION) {
logger.error("[WebSocket] set WEB_SOCKET_SWF_LOCATION to location of WebSocketMain.swf");
return;
}
if (!window.WEB_SOCKET_SUPPRESS_CROSS_DOMAIN_SWF_ERROR &&
!WEB_SOCKET_SWF_LOCATION.match(/(^|\/)WebSocketMainInsecure\.swf(\?.*)?$/) &&
WEB_SOCKET_SWF_LOCATION.match(/^\w+:\/\/([^\/]+)/)) {
var swfHost = RegExp.$1;
if (location.host != swfHost) {
logger.error(
"[WebSocket] You must host HTML and WebSocketMain.swf in the same host " +
"('" + location.host + "' != '" + swfHost + "'). " +
"See also 'How to host HTML file and SWF file in different domains' section " +
"in README.md. If you use WebSocketMainInsecure.swf, you can suppress this message " +
"by WEB_SOCKET_SUPPRESS_CROSS_DOMAIN_SWF_ERROR = true;");
}
}
var container = document.createElement("div");
container.id = "webSocketContainer";
// Hides Flash box. We cannot use display: none or visibility: hidden because it prevents
// Flash from loading at least in IE. So we move it out of the screen at (-100, -100).
// But this even doesn't work with Flash Lite (e.g. in Droid Incredible). So with Flash
// Lite, we put it at (0, 0). This shows 1x1 box visible at left-top corner but this is
// the best we can do as far as we know now.
container.style.position = "absolute";
if (WebSocket.__isFlashLite()) {
container.style.left = "0px";
container.style.top = "0px";
} else {
container.style.left = "-100px";
container.style.top = "-100px";
}
var holder = document.createElement("div");
holder.id = "webSocketFlash";
container.appendChild(holder);
document.body.appendChild(container);
// See this article for hasPriority:
// http://help.adobe.com/en_US/as3/mobile/WS4bebcd66a74275c36cfb8137124318eebc6-7ffd.html
swfobject.embedSWF(
WEB_SOCKET_SWF_LOCATION,
"webSocketFlash",
"1" /* width */,
"1" /* height */,
"10.0.0" /* SWF version */,
null,
null,
{hasPriority: true, swliveconnect : true, allowScriptAccess: "always"},
null,
function(e) {
if (!e.success) {
logger.error("[WebSocket] swfobject.embedSWF failed");
}
});
};
/**
* Called by Flash to notify JS that it's fully loaded and ready
* for communication.
*/
WebSocket.__onFlashInitialized = function() {
// We need to set a timeout here to avoid round-trip calls
// to flash during the initialization process.
setTimeout(function() {
WebSocket.__flash = document.getElementById("webSocketFlash");
WebSocket.__flash.setCallerUrl(location.href);
WebSocket.__flash.setDebug(!!window.WEB_SOCKET_DEBUG);
for (var i = 0; i < WebSocket.__tasks.length; ++i) {
WebSocket.__tasks[i]();
}
WebSocket.__tasks = [];
}, 0);
};
/**
* Called by Flash to notify WebSockets events are fired.
*/
WebSocket.__onFlashEvent = function() {
setTimeout(function() {
try {
// Gets events using receiveEvents() instead of getting it from event object
// of Flash event. This is to make sure to keep message order.
// It seems sometimes Flash events don't arrive in the same order as they are sent.
var events = WebSocket.__flash.receiveEvents();
for (var i = 0; i < events.length; ++i) {
WebSocket.__instances[events[i].webSocketId].__handleEvent(events[i]);
}
} catch (e) {
logger.error(e);
}
}, 0);
return true;
};
// Called by Flash.
WebSocket.__log = function(message) {
logger.log(decodeURIComponent(message));
};
// Called by Flash.
WebSocket.__error = function(message) {
logger.error(decodeURIComponent(message));
};
WebSocket.__addTask = function(task) {
if (WebSocket.__flash) {
task();
} else {
WebSocket.__tasks.push(task);
}
};
/**
* Test if the browser is running flash lite.
* @return {boolean} True if flash lite is running, false otherwise.
*/
WebSocket.__isFlashLite = function() {
if (!window.navigator || !window.navigator.mimeTypes) {
return false;
}
var mimeType = window.navigator.mimeTypes["application/x-shockwave-flash"];
if (!mimeType || !mimeType.enabledPlugin || !mimeType.enabledPlugin.filename) {
return false;
}
return mimeType.enabledPlugin.filename.match(/flashlite/i) ? true : false;
};
if (!window.WEB_SOCKET_DISABLE_AUTO_INITIALIZATION) {
if (window.addEventListener) {
window.addEventListener("load", function(){
WebSocket.__initialize();
}, false);
} else {
window.attachEvent("onload", function(){
WebSocket.__initialize();
});
}
}
})();