// Beaconpush Client 2 revision ${env.GIT_REVISION}

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function BeaconClient(address, clientId, options) {
    var OPENED = 1;
    var HEADERS_RECEIVED = 2;
    var LOADING = 3;
    var DONE = 4;
    var UNSENT = 0;

    this.address = address;
    this.clientId = clientId;
    this.wsAddress = options.wsAddress || address;
    this.sslAddress = options.sslAddress || this.address;
    this.sslWsAddress = options.sslWsAddress || this.sslAddress;
    this.sslEnabled = options.sslEnabled || false;
    this.options = {};
    for (var attr in options) {
        this.options[attr] = options[attr];
    }
    this.clientCookieName = "Beacon-Preferred-Client";
    this.clientIdCookieName = "Beacon-ClientID";
    this.activeClient = {name: ""};
    this.handlers = [];
    this.activeClient = null;
    this.apiKey = null;
    this.sequenceId = null;

    this.connect = function (apiKey, channels, options) {
        this.apiKey = apiKey;
        this.channels = channels instanceof Array ? channels : [channels];
        this.options.user = this.readCookie(this.clientIdCookieName) || this.generateClientId();

        for (var c in channels) {
            channels[c] = encodeURIComponent(channels[c]);
        }

        for (var attr in options) {
            this.options[attr] = options[attr];
        }

        this.log("Browser " + navigator.userAgent + " on " + navigator.platform + " platform");

        this.findAndConnectClient();
    };

    this.disconnect = function () {
        this.activeClient.disconnect();
    };

    this.disconnectAndCancelReconnect = function() {
        this.activeClient.disconnectNoReconnect();
    };

    this.onClientFailed = function (client) {
        for (var i = 0; i < this.clients.length; i++) {
            if (this.clients[i] == client) {
                this.clients.splice(i, 1);
                break;
            }
        }

        this.eraseCookie(this.clientCookieName);

        if (this.options.forceClient) {
            this.clients = [eval("this." + this.options.forceClient)];
        }

        this.findAndConnectClient();
        //setTimeout(this.findAndConnectClient, 0);
    };

    this.findAndConnectClient = function () {
        if (this.sslEnabled) this.log("Beaconpush will try to use a SSL connection");
        if (this.clients.length == 0) {
            this.log("No transport client availabe");
            return;
        }

        var preferredClientName = this.readCookie(this.clientCookieName);

        if (preferredClientName != null) {
            var preferredClient = eval("this." + preferredClientName);

            for(var i = 0; i< this.clients.length; i++) {
                if (this.clients[i] == preferredClient) {
                    this.log("Found preferred client (" + preferredClientName + ") " + preferredClient.name);
                    this.clients.splice(i, 1);
                    break;
                }
            }

            // Put preferred first
            this.clients.unshift(preferredClient);
        }

        var client = null;

        for (var j = 0; j < this.clients.length; j++) {
            var c = this.clients[j];

            var probeResult = c.probe();
            if (probeResult != true) {
                this.clients.splice(j, 1);
                j--;
                this.log("Probe for client " + c.name + " failed, removing. (" + probeResult + ")");
                continue;
            }

            client = c;
            this.log("Using client " + c.name + "");
            break;
        }

        if (!client) {
            //FIXME: Call beacon not available callback here?
            this.log("ERROR! Could not initialize Beaconpush. See errors above for clues how to fix it.");
            return;
        }

        this.log("Connecting to channels: " + this.channels);

        client.connect();
        this.log(client.name + " embedded.");
        this.activeClient = client;
        this.eraseCookie(this.clientCookieName);
        this.createCookie(this.clientCookieName, client.name, 1);
    };

    this.listen = function (handler) {
        this.handlers.push(handler);
    };

    this.trigger = function (message) {
        for (var i in this.handlers) {
            this.handlers[i](message);
        }
    };

    // Helpers
    this.generateClientId = function () {
        var id = this.guid();
        this.createCookie(this.clientIdCookieName, id, 6);
        return id;
    };

    this.logObject = function(obj) {
        if (this.options.log && "console" in window && "log" in window.console) {
            console.log(obj);
        }
    };

    this.log = function(msg) {
        if (this.options.log && "console" in window && "log" in window.console) {
            console.log("Beacon (" + this.clientId + "): " + msg);
        }
    };

    this.error = function(msg) {
        if (this.options.log && "console" in window && "error" in window.console) {
            console.error("Beacon (" + this.clientId + "): " + msg);
        }
    };

    this.S4 = function () { return (((1+Math.random())*0x10000)|0).toString(16).substring(1); };
    this.guid = function () { return (this.S4()+this.S4()+this.S4()+this.S4()+this.S4()); };

    this.createCookie = function (name, value, hours) {
        var expires = "";
        if (hours) {
            var date = new Date();
            date.setTime(date.getTime() + (hours * 60 * 60 * 1000));
            expires = "; expires=" + date.toGMTString();
        }
        document.cookie = name + "=" + value + expires + "; path=/";
    };

    this.readCookie = function (name) {
        var nameEQ = name + "=";
        var ca = document.cookie.split(';');
        for (var i = 0; i < ca.length; i++) {
            var c = ca[i];
            while (c.charAt(0) == ' ')
                c = c.substring(1, c.length);

            if (c.indexOf(nameEQ) == 0)
                return c.substring(nameEQ.length,c.length);
        }
        return null;
    };

    this.eraseCookie = function (name) {
        this.createCookie(name, "", -1);
    };

    this.getAddressForProtocolAndSecurity = function(protocol) {
        if ("ws" == protocol) {
            if (this.sslEnabled)
                return this.sslWsAddress;
            else
                return this.wsAddress;
        }
        else if (this.sslEnabled)
            return this.sslAddress;
        else
            return this.address;
    };

    this.getSecureOrNotProtocolForProtocol = function(protocol) {
        if (this.sslEnabled) {
            return protocol + "s"
        }
        return protocol;
    };

    this.createUri = function (protocol) {
        var uri = this.getSecureOrNotProtocolForProtocol(protocol) + "://" + this.getAddressForProtocolAndSecurity(protocol) + "/spheres/" + this.apiKey + "/users/" + this.options.user;
        var params = ['authToken=' + this.options.authToken];
        var seqId = this.getSequenceId();
        if (seqId) { params.push("sequenceId=" + seqId); }
        if (this.channels && this.channels.length > 0) { params.push("channels=" + this.channels.join(',')); }
        if (params.length > 0) {
            uri += "?";
            uri += params.join('&');
        }
        return uri;
    };

    this.setSequenceId = function (id) {
        this.sequenceId = id;
        this.createCookie(this.getCookieName(), id === null ? "0" : id, 1);
    };

    this.getSequenceId = function () {
        if (this.sequenceId == null) {
            // If it's the first time we're connecting, try reading from the cookie.
            this.sequenceId = this.readCookie(this.getCookieName());
        }
        return this.sequenceId;
    };

    this.getCookieName = function () { return "Beacon-SequenceID-" + this.clientId + "-" + this.options.user; };

    this.detectCrossDomainCapability = function () {
        var request = new XMLHttpRequest();
        var capable = request.withCredentials !== undefined;
        if (!capable) this.log("Could not send cross-domain request. Different domains?" + (this.sslEnabled ?" If you are using an unsigned certificate in development, access " + this.getSecureOrNotProtocolForProtocol("http") + "://" + this.getAddressForProtocolAndSecurity("http") + "/crossdomain.txt" + " and accept the unsigned certificate manually. Then try again.":""));
        return capable;
    };

    var flashLongPoll = this.FlashLongPoll = {
        beacon: this,
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this.swfobject){this.swfobject[X]=null}this.swfobject=null})}}();return{registerObject:function(ab,X,aa,Z){if(M.w3&&ab&&X){var Y={};Y.id=ab;Y.swfVersion=X;Y.expressInstall=aa;Y.callbackFn=Z;o[o.length]=Y;w(ab,false)}else{if(Z){Z({success:false,id:ab})}}},getObjectById:function(X){if(M.w3){return z(X)}},embedSWF:function(ab,ah,ae,ag,Y,aa,Z,ad,af,ac){var X={success:false,id:ah};if(M.w3&&!(M.wk&&M.wk<312)&&ab&&ah&&ae&&ag&&Y){w(ah,false);K(function(){ae+="";ag+="";var aj={};if(af&&typeof af===r){for(var al in af){aj[al]=af[al]}}aj.data=ab;aj.width=ae;aj.height=ag;var am={};if(ad&&typeof ad===r){for(var ak in ad){am[ak]=ad[ak]}}if(Z&&typeof Z===r){for(var ai in Z){if(typeof am.flashvars!=D){am.flashvars+="&"+ai+"="+Z[ai]}else{am.flashvars=ai+"="+Z[ai]}}}if(F(Y)){var an=u(aj,am,ah);if(aj.id==ah){w(ah,true)}X.success=true;X.ref=an}else{if(aa&&A()){aj.data=aa;P(aj,am,ah,ac);return}else{w(ah,true)}}if(ac){ac(X)}})}else{if(ac){ac(X)}}},switchOffAutoHideShow:function(){m=false},ua:M,getFlashPlayerVersion:function(){return{major:M.pv[0],minor:M.pv[1],release:M.pv[2]}},hasFlashPlayerVersion:F,createSWF:function(Z,Y,X){if(M.w3){return u(Z,Y,X)}else{return undefined}},showExpressInstall:function(Z,aa,X,Y){if(M.w3&&A()){P(Z,aa,X,Y)}},removeSWF:function(X){if(M.w3){y(X)}},createCSS:function(aa,Z,Y,X){if(M.w3){v(aa,Z,Y,X)}},addDomLoadEvent:K,addLoadEvent:s,getQueryParamValue:function(aa){var Z=j.location.search||j.location.hash;if(Z){if(/\?/.test(Z)){Z=Z.split("?")[1]}if(aa==null){return L(Z)}var Y=Z.split("&");for(var X=0;X<Y.length;X++){if(Y[X].substring(0,Y[X].indexOf("="))==aa){return L(Y[X].substring((Y[X].indexOf("=")+1)))}}}return""},expressInstallCallback:function(){if(a){var X=c(R);if(X&&l){X.parentNode.replaceChild(l,X);if(Q){w(Q,true);if(M.ie&&M.win){l.style.display="block"}}if(E){E(B)}}a=false}}}}(),
        swfUrl: (this.options.swfUrl != null ? this.options.swfUrl : this.getSecureOrNotProtocolForProtocol("http") + "://" + this.getAddressForProtocolAndSecurity("http") + "/client.swf"),
        holderId: "beaconFlashHolder",
        containerId: "beaconFlashClient" + this.clientId,
        name: "FlashLongPoll",
        protocol: "http",

        getOrCreateHolder: function () {
            var holder = document.getElementById(flashLongPoll.holderId);
            if (!holder) {
                holder = document.createElement("div");
                holder.id = flashLongPoll.holderId;
                holder.className = "beaconFlashHolder"; // allows for styling/positioning externally via CSS (for example z-index)
                holder.style.position = "fixed";
                holder.style.left = "0px";
                holder.style.bottom = "0px";
                //holder.style.width = "2px";
                document.body.appendChild(holder);
            }
            return holder;
        },

        appendElement: function () {
            var holder = flashLongPoll.getOrCreateHolder();
            var container = document.createElement("div");
            container.id = flashLongPoll.containerId;
            holder.appendChild(container);
        },

        removeElement: function () {
            flashLongPoll.swfobject.removeSWF(flashLongPoll.containerId);
            var e = document.getElementById(flashLongPoll.containerId);
            if (e) document.body.removeChild(e);
        },

        probe: function () {
            if (!flashLongPoll.swfobject.hasFlashPlayerVersion("9.0.0")) {
                return "Flash player >= 9.0.0 missing. Cannot embed Flash long poll client.";
            }

            if (flashLongPoll.beacon.sslEnabled && !flashLongPoll.beacon.detectCrossDomainCapability()) {
                return "Could not send cross-domain request. Cannot embed Flash long poll client."
            }

            return true;
        },

        connect: function () {
            flashLongPoll.removeElement();
            flashLongPoll.appendElement();

            var flashvars = {
                url: flashLongPoll.beacon.getAddressForProtocolAndSecurity(flashLongPoll.protocol), // flashLongPoll.beacon.address
                user: flashLongPoll.beacon.options.user,
                channels: flashLongPoll.beacon.channels.join(','),
                apiKey: flashLongPoll.beacon.apiKey,
                token: flashLongPoll.beacon.options.authToken,
                secure: flashLongPoll.beacon.sslEnabled,
                onLog: "Beacon.clients['" + flashLongPoll.beacon.clientId + "'].FlashLongPoll.onLog",
                onMessage: "Beacon.clients['" + flashLongPoll.beacon.clientId + "'].FlashLongPoll.onMessage",
                onAuthError: "Beacon.clients['" + flashLongPoll.beacon.clientId + "'].FlashLongPoll.onAuthError",
                protocol: "comet"
            };
            if (flashLongPoll.beacon.sslEnabled) {
                flashWebSocket.beacon.log("Flash LongPoll might fail in development if you are not using signed certificate. If this happens and you know what you are doing, access " + flashLongPoll.swfUrl + " manually and accept the certificate to get passed this. Then try again.");
            }
            flashLongPoll.swfobject.embedSWF(flashLongPoll.swfUrl, flashLongPoll.containerId, "2", "2", "9.0.0", "expressInstall.swf", flashvars, {allowscriptaccess: 'always', wmode: 'opaque'}, {}, flashLongPoll.onEmbed);
            return true;
        },

        disconnect: function () {
            var c = document.getElementById(flashLongPoll.containerId);
            try {
                if (c && "unembed" in c) { c.unembed(); }
            } catch (err) {
                flashLongPoll.beacon.log("Flash could not unembed itself, but it is ok");
            }
            flashLongPoll.removeElement();
        },

        disconnectNoReconnect: function() {
            flashLongPoll.disconnect();
        },

        onEmbed: function (e) {},

        onMessage: function(msg) {
            // Try/catch needed because errors will not be propagated when called from Flash
            try {
                var messages = JSON.parse(unescape(msg)).messages;
                for (var i in messages) {
                    flashLongPoll.beacon.trigger(messages[i]);
                }
            } catch (err) {
                flashLongPoll.beacon.log("Error triggering handler. Reason: " + err);
            }
        },

        onAuthError: function(msg) { flashLongPoll.beacon.log(msg); },
        onLog: function(msg) { flashLongPoll.beacon.log(unescape(msg)); }
    };

    var flashWebSocket = this.FlashWebSocket = {
        beacon: this,
        name: "FlashWebSocket",
        protocol: "ws",

        probe: function () {
            if (!flashLongPoll.swfobject.hasFlashPlayerVersion("9.0.0")) {
                return "Flash player >= 9.0.0 missing. Cannot embed Flash long poll client.";
            }
            return true;
        },

        connect: function () {
            flashLongPoll.removeElement();
            flashLongPoll.appendElement();

            var flashvars = {
                url: flashWebSocket.beacon.wsAddress, //flashWebSocket.beacon.getAddressForProtocolAndSecurity(flashWebSocket.protocol), // flashWebSocket.beacon.address
                user: flashWebSocket.beacon.options.user,
                channels: flashWebSocket.beacon.channels.join(','),
                apiKey: flashWebSocket.beacon.apiKey,
                secure: false, //flashWebSocket.beacon.sslEnabled,
                token: flashWebSocket.beacon.options.authToken,
                onLog: "Beacon.clients['" + flashWebSocket.beacon.clientId + "'].FlashWebSocket.onLog",
                onMessage: "Beacon.clients['" + flashWebSocket.beacon.clientId + "'].FlashWebSocket.onMessage",
                onAuthError: "Beacon.clients['" + flashWebSocket.beacon.clientId + "'].FlashWebSocket.onAuthError",
                onClientFailed: "Beacon.clients['" + flashWebSocket.beacon.clientId + "'].FlashWebSocket.onClientFailed",
                protocol: "websocket"
            };

            if (flashWebSocket.beacon.sslEnabled) {
                flashWebSocket.beacon.log("SSL is Enabled. However, Flash WebSocket does not use a secure connection (SSL), but rather a normal HTTP connection to the beacon server.");
                flashWebSocket.beacon.log("Flash WebSocket might fail in development if you are not using a signed certificate. If this happens and you know what you are doing, access " + flashLongPoll.swfUrl + " manually and accept the certificate to get passed this. Then try again.");
            }
            flashLongPoll.swfobject.embedSWF(flashLongPoll.swfUrl, flashLongPoll.containerId, "2", "2", "9.0.0", "expressInstall.swf", flashvars, {allowscriptaccess: 'always', wmode: 'opaque'}, {}, flashLongPoll.onEmbed);
            return true;
        },

        disconnect: function () {
            flashLongPoll.disconnect();
        },

        disconnectNoReconnect: function() {
            flashWebSocket.disconnect();
        },

        onClientFailed: function () {
            flashWebSocket.beacon.log("Flash WebSocket failed, trying another transport");
            setTimeout(function () { flashWebSocket.beacon.onClientFailed(flashWebSocket); }, 0);
        },

        onMessage: function(msg) {
            try {
                flashWebSocket.beacon.trigger(JSON.parse(unescape(msg)));
            } catch (err) {
                flashWebSocket.beacon.log("Error triggering handler. Reason: " + err);
            }
        },

        onAuthError: function(e) {
            flashWebSocket.beacon.log("Authentication error!");
        },

        onLog: function(text) {
            flashWebSocket.beacon.log(unescape(text));
        }
    };

    var xhrLongPoll = this.XhrLongPoll = {
        beacon: this,
        name: "XhrLongPoll",
        reconnectDelays: [1000, 1000, 1000, 1000, 1000, 5000, 10000, 20000, 60000, 60000],
        standardTimeoutTime: 30,
        retries: 0,
        xhr: new window.XMLHttpRequest,
        reconnectTime: new Date().getTime(),
        timeoutId: null, // tracker for the timeout create by retry()
        protocol: "http",

        onReadyStateChange: function () {
            if (this.readyState != DONE) { return; }
            if (this.status == 200) {
                var seqId = this.responseText.match(/"seqId":(\d+)/)[1];
                xhrLongPoll.beacon.setSequenceId(seqId);
                try {
                    var messages = JSON.parse(this.responseText).messages;
                    for (var i in messages) { xhrLongPoll.beacon.trigger(messages[i]); }
                } catch (err) {
                    xhrLongPoll.beacon.log("Error triggering handler. Reason: " + err);
                }
                xhrLongPoll.retries = 0;
                xhrLongPoll.retry();
            } else if (this.status == 401) {
                xhrLongPoll.beacon.log("Authentication error, invalid token?");
            } else if (this.statusText == 'Gateway Time-out' || this.statusText == 'Bad Gateway') {
                // status code is always empty on 5xx.
                xhrLongPoll.retry();
            } else if (this.status == 0) {
                // status 0 if timeout reached.
                if (new Date().getTime() - xhrLongPoll.reconnectTime > xhrLongPoll.standardTimeoutTime)
                    xhrLongPoll.retries = 0;
                xhrLongPoll.retry();
            } else {
                xhrLongPoll.beacon.log("Unknown error (status=" + this.status + ", responseText=" + this.responseText + ")");
            }
        },

        probe: function () {
            if (!xhrLongPoll.beacon.detectCrossDomainCapability()) {
                return "Cross domain capability not supported";
            }
            return true;
        },

        connect: function () {
            var xhr = new XMLHttpRequest();
            if (xhr.withCredentials !== undefined) {
                xhrLongPoll.beacon.log("CORS support found!");
            }

            xhrLongPoll.reconnect();
            return true;
        },

        disconnect: function () {
            var xhr = xhrLongPoll.xhr;
            if (!xhr) return;
            xhr.onreadystatechange = null;
            xhr.abort();
            xhr = null;
        },

        disconnectNoReconnect: function() {
            if (xhrLongPoll.timeoutId) {
                clearTimeout(xhrLongPoll.timeoutId);
                xhrLongPoll.timeoutId = null;
            }
            xhrLongPoll.disconnect();
        },

        reconnect: function () {
            xhrLongPoll.reconnectTime = new Date().getTime();
            xhrLongPoll.xhr = new window.XMLHttpRequest;
            xhrLongPoll.xhr.onreadystatechange = xhrLongPoll.onReadyStateChange;

            if (xhrLongPoll.xhr.readyState == OPENED ||
                    xhrLongPoll.xhr.readyState == HEADERS_RECEIVED ||
                    xhrLongPoll.xhr.readyState == LOADING) {
                xhrLongPoll.beacon.log("Connection already open. Ignoring connect request.");
                return;
            }

            if (xhrLongPoll.xhr.readyState == UNSENT || xhrLongPoll.xhr.readyState == DONE) {
                var url = xhrLongPoll.beacon.createUri(xhrLongPoll.protocol);
                xhrLongPoll.beacon.log(url);
                xhrLongPoll.xhr.open("GET", url, true);
            }

            xhrLongPoll.xhr.send(null);
        },

        retry: function () {

            if (xhrLongPoll.retries > xhrLongPoll.reconnectDelays.length - 1)
            {
                xhrLongPoll.beacon.log("Maximum number of retries reached. Aborting connection.");
                return;
            }

            var delay = xhrLongPoll.reconnectDelays[xhrLongPoll.retries];
            if (xhrLongPoll.retries > 0) {
                xhrLongPoll.beacon.log("Retrying in " + delay / 1000 + " seconds");
            }            
            xhrLongPoll.timeoutId = setTimeout(function () { xhrLongPoll.reconnect(); }, delay);
            xhrLongPoll.retries++;
        }
    };

    var webSocket = this.WebSocket = {
        beacon: this,
        name: "WebSocket",
        reconnectDelays: [500, 2000, 5000, 10000, 20000, 60000, 60000],
        retries: 0,
        retryEnabled: true,
        ws: null,
        beenConnected: false,
        pingTimerId: null,
        timeoutId: null, // tracker for the timeout create by retry()
        protocol: "ws",
        pingIntervalId: null,

        sendPingRequest: function () {
            if (!webSocket.beenConnected == null) { return; }

            webSocket.cancelPingTimeout();
            webSocket.pingTimerId = setTimeout(function () { webSocket.beacon.onClientFailed(webSocket); }, 2000);
            webSocket.ws.send("__PING__");
        },

        startHeartbeatPing: function () {
            if (!webSocket.beenConnected == null) { return; }

            webSocket.cancelPingInterval();
            webSocket.pingIntervalId = setInterval(function () { webSocket.ws.send("__PING__"); }, 2 * 60 * 1000);
        },

        probe: function () {
            if (!("WebSocket" in window)) { return "WebSocket object not found"; }

            webSocket.beacon.log("WebSocket support found!");
            return true;
        },

        connect: function () {
            webSocket.reconnect();
            return true;
        },

        disconnect: function () {
            if (webSocket.ws) {
                webSocket.ws.close();
            }
            webSocket.cancelPingTimeout();
        },

        disconnectNoReconnect: function() {
            if (webSocket.timeoutId) {
                clearTimeout(webSocket.timeoutId);
                webSocket.timeoutId = null;
            }
            webSocket.retryEnabled = false;
            webSocket.disconnect();
        },

        onOpen: function (e) {
            var uri =  webSocket.beacon.getAddressForProtocolAndSecurity(webSocket.protocol);
            webSocket.beacon.log("Connected to " + uri);
            webSocket.beenConnected = true;
            webSocket.retries = 0;
            webSocket.retryEnabled = true;

            webSocket.sendPingRequest();
            webSocket.startHeartbeatPing();
        },

        onClose: function (e) {
            webSocket.beacon.log("Closed");
            webSocket.beacon.logObject(e);
            webSocket.cancelPingTimeout();
            webSocket.cancelPingInterval();

            if (!webSocket.beenConnected) {
                webSocket.beacon.log("WebSocket failed, trying another transport");
                setTimeout(function () { webSocket.beacon.onClientFailed(webSocket); }, 0);
            } else {
                webSocket.retry();
            }
        },

        onError: function (e) {
            webSocket.beacon.log("Error");
            webSocket.beacon.logObject(e);
            webSocket.beacon.onClientFailed(webSocket);
        },

        onMessage: function (e) {
            if (e.data == "__PONG__") {
                webSocket.cancelPingTimeout();
                return;
            }
            if (e.data == "__PING__") {
                webSocket.ws.send("__PONG__");
                return;
            }

            var message = e.data.split("|", 2);
            var seqId = parseInt(message[0]);
            var content = message[1];
            webSocket.beacon.setSequenceId(seqId);
            webSocket.beacon.trigger(JSON.parse(content));
        },

        retry: function () {
            if (!webSocket.retryEnabled) return;
            if (webSocket.retries > webSocket.reconnectDelays.length - 1) return;
            var delay = webSocket.reconnectDelays[webSocket.retries];
            webSocket.timeoutId = setTimeout(function () { webSocket.reconnect(); }, delay);
            webSocket.beacon.log("Retrying in " + delay / 1000 + " seconds");
            webSocket.retries++;
        },

        reconnect: function () {
            var uri = webSocket.beacon.createUri(webSocket.protocol);
            webSocket.beacon.log("Connecting to " + uri);
            var ws = new WebSocket(uri);
            ws.onopen = webSocket.onOpen;
            ws.onclose = webSocket.onClose;
            ws.onerror = webSocket.onError;
            ws.onmessage = webSocket.onMessage;
            webSocket.ws = ws;
        },

        cancelPingTimeout: function () {
            if (webSocket.pingTimerId != null) {
                clearTimeout(webSocket.pingTimerId);
                webSocket.pingTimerId = null;
            }
        },

        cancelPingInterval: function () {
            if (webSocket.pingIntervalId != null) {
                clearInterval(webSocket.pingIntervalId);
                webSocket.pingIntervalId = null;
            }
        }
    };
    //this.clients = [this.WebSocket, this.FlashWebSocket, this.XhrLongPoll, this.FlashLongPoll];
    this.clients = [this.WebSocket, this.FlashWebSocket, this.XhrLongPoll, this.FlashLongPoll];
}

var Beacon = {

    defaultOptions: {log: false, user: null, token: null, swfUrl: null},
        /**
     * List of active beacon clients
     */
    clients: {},

    logObject: function(obj) {
        if (this.defaultOptions.log && "console" in window && "log" in window.console) {
            console.log(obj);
        }
    },

    log: function(msg) {
        if (this.defaultOptions.log && "console" in window && "log" in window.console) {
            console.log("Beacon: " /* + this.activeClient.name + ": " */ + msg);
        }
    },

    error:  function(msg) {
        if (this.defaultOptions.log && "console" in window && "error" in window.console) {
            console.error("Beacon: " /* + this.activeClient.name + ": " */ + msg);
        }
    },



    /**
     * Create an identifier which may be used as a lookup key. The identifier can be expected
     * to be safely used in DOM id's.
     *
     * Note: this produces the same output as Integer.toHexString("string".hashCode()) in Java
     * @param name the string to create key for
     * @return string a string identifier
     */
    mkid: function(name) {
        var hash = 0;
        var i, aChar;
        for (i = 0; i < name.length; i++) {
            aChar = name.charCodeAt(i);
            hash = 31 * hash + aChar;
            hash = hash & hash; // convert to 32bit integer
        }
        if (hash < 0) {
            hash = 0xffffffff + hash + 1; // fix for negative value (we don't want a dash in our string)
        }
        return hash.toString(16); // convert to hex string
    },

    init: function(listener, beaconConnections, log) {
        Beacon.defaultOptions.log = log;
        var key; // array/map key loop variables
        for (key in beaconConnections) {
            var beaconConnection = beaconConnections[key];
            var connectionOptions = {
                user: beaconConnection.user,
                token: beaconConnection.token,
                wsAddress: beaconConnection.wsAddress,
                sslAddress: beaconConnection.sslAddress,
                sslWsAddress: beaconConnection.sslWsAddress,
                sslEnabled: beaconConnection.sslEnabled,
                swfUrl: Beacon.defaultOptions.swfUrl,
                log: log
            };

            this.init_single(listener, beaconConnection.apiKey, beaconConnection.address, beaconConnection.channelsWithAuth, connectionOptions);
        }
    },

    init_single: function(listener, apiKey, address, channels, options) {
        var id = this.mkid(address);
        this.log("Created Beacon client id: " + id);
        var bc = new BeaconClient(address, id, options);
        this.clients[id] = bc;
        bc.connect(apiKey, channels, {user: options.user, authToken: options.token}); // , forceClient: "WebSocket" "FlashLongPoll" "FlashWebSocket"
        bc.listen(listener);
    },

    reinit: function(listener, beaconConnections, log) {
        if (log) { this.log("Called reinit()"); }
        if (typeof beaconConnections == "undefined") {
            this.error("reinit() called with 'undefined' list");
            return;
        }

        var connectionMap = {}; // {ip: PushDto}
        var toRemove = [];      // [BeaconClient]
        var i, key;             // array/map key loop variables

        // set up connections associative array based on base http address as key
        for (i in beaconConnections) {
            connectionMap[beaconConnections[i].address] = beaconConnections[i];
        }

        for (key in this.clients) {
            var beaconClient = this.clients[key];
            var beaconConnection = connectionMap[beaconClient.address];

            if (beaconConnection == null) {
                // this existing connection should no longer be active
                toRemove.push(beaconClient);
                if (log) { this.log("Marking for removal: " + beaconClient.address); }
                continue;
            }

            // connection exists - update channels and reconnect if necessary

            // the channel names need to be uriEncoded here since that is normally done
            // in the BeaconClient constructor, which we are bypassing in this case...
            var uriEncodedChannels = [];
            for (var c in beaconConnection.channelsWithAuth) {
                uriEncodedChannels[c] = encodeURIComponent(beaconConnection.channelsWithAuth[c]);
            }

            if (!this.arraysContainsSameChannels(beaconClient.channels, uriEncodedChannels)) {
                if (log) { this.log("Swapping channels on " + beaconClient.address + " - old: " + beaconClient.channels + ", new: " + uriEncodedChannels); }
                // disconnect
                beaconClient.disconnectAndCancelReconnect();
                // set new channels list
                beaconClient.channels = uriEncodedChannels;
                // reconnect
                beaconClient.findAndConnectClient();
            } else {
                if (log) { this.log("Keeping " + beaconClient.address + " as is (channels not modified)"); }
            }

            delete connectionMap[beaconClient.address];
        }

        // setup new connections (new addresses)
        for (key in connectionMap) {
            var newBeaconConnection = connectionMap[key];
            if (log) { this.log("Setting up new connection: " + newBeaconConnection.address + " with channels " + newBeaconConnection.channelsWithAuth); }
            var connectionOptions = {
                user: newBeaconConnection.user,
                token: newBeaconConnection.token,
                wsAddress: newBeaconConnection.wsAddress,
                sslAddress: newBeaconConnection.sslAddress,
                sslWsAddress: newBeaconConnection.sslWsAddress,
                sslEnabled: newBeaconConnection.sslEnabled,
                swfUrl: Beacon.defaultOptions.swfUrl,
                log: log
            };

            this.init_single(listener, newBeaconConnection.apiKey, newBeaconConnection.address, newBeaconConnection.channelsWithAuth, newBeaconConnection);

            //this.init_single(listener, newConnection.apiKey, newConnection.address, newConnection.wsAddress, newConnection.sslAddress, newConnection.sslWsAddress, newConnection.sslEnabled, newConnection.user, newConnection.token, newConnection.channelsWithAuth, "" + log);
        }
        delete connectionMap;

        // tear down old unused connection
        while (toRemove.length != 0)
        {
            var clientToRemove = toRemove[0];

            for (key in this.clients) {
                if (clientToRemove == this.clients[key]) {
                    if (log) { this.log("PUSH: tearing down unused connection: " + Beacon.clients[key].address + " (" + key + ")"); }
                    this.clients[key].disconnectAndCancelReconnect();
                    delete this.clients[key];
                    break;
                }
            }

            toRemove.splice(0, 1)
        }
        delete toRemove;

        if (log) { this.log("PUSH: reinit() Done"); }
    },

    /**
     * Compares two arrays if they contain the same channels, not necessary in same order...
     * @param arr1 one array
     * @param arr2 another array
     * @return bool true if and only if the two arrays have the same length and contain the same channels regardless of order
     */
    arraysContainsSameChannels: function(arr1, arr2) {
        if (arr1.length != arr2.length) return false;

        arr1 = this.removeChannelTokens(arr1);
        arr2 = this.removeChannelTokens(arr2);

        for (var i = 0; i < arr1.length; i++) {
            if (!this.arrayContains(arr2, arr1[i])) return false;
        }

        return true;
    },

    /**
     * Checks if a give array contains specified object.
     * @param arr the array
     * @param obj the object
     * @return bool true if and only if the array contains obj
     */
    arrayContains: function(arr, obj) {
        for (var i = 0; i < arr.length; i++) {
            if (arr[i] === obj) return true;
        }

        return false;
    },

    /**
     * Takes a list of channel names and strips the leading auth tokens (if any).
     * @param channels the list of channels, with or without auth tokens
     * @return list a new list with channel names with auth tokens removed
     */
    removeChannelTokens: function(channels) {
        var list = [];
        for (var i in channels) {
            var channel = decodeURIComponent(channels[i]);
            var tokenEndIndex = Math.max(channel.indexOf("@"), Math.max(channel.indexOf("*"), channel.indexOf("#")));
            list.push(tokenEndIndex == -1 ? channel : channel.substring(tokenEndIndex));
        }
        return list;
    }

};