Develop Reference

Opentok chat is running slowly according I execute session.disconnect() and session.connect()

I am new to the Opentok API and I am writing tests. In my tests I simulated disconnecting from the room and connecting again, but if I execute it at various times, the chat is runs slowly, until broken.
To init the chat I run $scope.initSession() and to disconnect I run $scope.disconnectFromSession().
I am using the Opentok.js version 2.13.2. See my following code:
var apiKey, sessionId, token;
apiKey = //my api key;
sessionId = //my sessionid;
token = //my token;
var session = null;
var publisher = null;
var stream = null;
var connectionCount = 0;
var publisherProperties = {frameRate: 7};
$scope.connected = false;
$scope.initSession = function() {
if (OT.checkSystemRequirements() == 1) {
// Initialize Session Object
session = OT.initSession(apiKey, sessionId);
createElement("publisher");
// initialize a publisher
publisher = OT.initPublisher('publisher', publisherProperties);
session.on({
streamCreated: function(event) {
console.log("EVENT streamCreated: " + event.stream.name + " - " + event.reason);
createElement("subscriber");
stream = event.stream;
session.subscribe(stream, 'subscriber');
},
streamDestroyed: function(event) {
event.preventDefault();
console.log("EVENT streamDestroyed: " + event.stream.name + " - " + event.reason);
console.log('Stream ${event.stream.name} ended because ${event.reason}.');
}
});
connectToSession();
} else {
console.log('Browser haven´t support to WebRTC');
}
}
function connectToSession() {
session.connect(token, function(err) {
if (err) {
if (err.name === "OT_NOT_CONNECTED") {
showMessage('Failed to connect. Please check your connection and try connecting again.');
} else {
showMessage('An unknown error occurred connecting. Please try again later.');
}
} else {
// publish to the session
session.publish(publisher);
$scope.connected = true;
}
});
}
function createElement(id) {
console.log(document.getElementById(id));
if (document.getElementById(id) === null) {
var divPublisher = document.createElement("div");
divPublisher.setAttribute("id", id);
document.getElementById("div-videos").appendChild(divPublisher);
}
}
$scope.disconnectFromSession = function() {
session.disconnect();
$scope.connected = false;
OT.off();
}
$scope.initSession();
I appreciate any help.

Multiple sockets override itself

My Code
I want to make a multiple connection to a telnet console. This project is for Teamspeak and Teamspeak just communicate with telnet. I´ve a object that create a telnet connection as socket with the net lib. If we have just one instance to connect all works fine and I get the serverlist over the telnet connection back. But if I´ve two instance he says invalid loginname or password. That login informations are correct and he also try just to connect to one server.
My Class:
/*
Teamspeak query client class
#instance: Instance object of the teamspeak query client
*/
function TeamspeakQueryClient(instance) {
events.EventEmitter.call(this);
var $this = this,
socket = net.connect(instance.port, instance.ip),
reader = null,
skipLines = -2,
queue = [ ],
executing = null,
server = null;
this.Type = 'Unknown';
this.Id = null;
this.Connected = false;
this.Banned = false;
/*
Socket settings
*/
socket.setKeepAlive(true, 60000);
/*
Socket connect to the teamspeak instance
*/
socket.on("connect", function() {
reader = LineInputStream(socket);
reader.on("line", function(line) {
var s = line.trim();
console.log(line);
// Skipp the first lines
if(skipLines < 0){
if(line === 'TS3') {
this.Type = 'Teamspeak';
};
skipLines++;
if(skipLines === 0) {
checkQueue();
if(server === null) {
$this.SendCommand("login", {client_login_name: instance.client, client_login_password: instance.password}, function(err, response, rawResponse) {
console.log(err);
if(err === null) {
if(err.id === 3329) {
$this.Banned = true;
};
$this.CloseSocket();
} else {
$this.SendCommand("serverlist", null, function(err, response, rawResponse){
console.log(response);
if(response[0] === undefined) {
console.log('1 server');
} else {
console.log('mehrere server');
};
//console.log(rawResponse);
/*cl.send("clientlist", function(err, response, rawResponse){
console.log(util.inspect(response));
});*/
});
};
});
} else {
console.log(server);
};
};
return;
};
// Parse server request
var response = undefined;
if(s.indexOf("error") === 0){
response = parseResponse(s.substr("error ".length).trim());
executing.error = response;
if(executing.error.id === 0) delete executing.error;
if(executing.cb) executing.cb.call(executing, executing.error, executing.response,
executing.rawResponse);
executing = null;
checkQueue();
} else if(s.indexOf("notify") === 0){
s = s.substr("notify".length);
response = parseResponse(s);
$this.emit(s.substr(0, s.indexOf(" ")), response);
} else if(executing) {
response = parseResponse(s);
executing.rawResponse = s;
executing.response = response;
};
});
$this.emit("connect");
});
/*
Socket error
*/
socket.on("error", function(err){
log.LogLine(1, 'TeamspeakQueryClient: We got a error');
log.LogLine(1, 'Message: '+err);
$this.emit("error", err);
});
/*
Socket close
*/
socket.on("close", function(){
log.LogLine(3, 'TeamspeakQueryClient: Socket from '+instance.alias+' closeing...');
$this.emit("close", queue);
});
/*
Function to send a custom command to the telnet console
*/
TeamspeakQueryClient.prototype.SendCommand = function SendCommand() {
var args = Array.prototype.slice.call(arguments);
//console.log(args);
var options = [], params = {};
var callback = undefined;
var cmd = args.shift();
args.forEach(function(v){
if(util.isArray(v)){
options = v;
} else if(typeof v === "function"){
callback = v;
} else {
params = v;
}
});
var tosend = tsescape(cmd);
options.forEach(function(v){
tosend += " -" + tsescape(v);
});
for(var k in params){
var v = params[k];
if(util.isArray(v)){ // Multiple values for the same key - concatenate all
var doptions = v.map(function(val){
return tsescape(k) + "=" + tsescape(val);
});
tosend += " " + doptions.join("|");
} else {
tosend += " " + tsescape(k.toString()) + "=" + tsescape(v.toString());
}
}
queue.push({cmd: cmd, options: options, parameters: params, text: tosend, cb: callback});
if(skipLines === 0) checkQueue();
};
/*
Function to close the socket
*/
TeamspeakQueryClient.prototype.CloseSocket = function CloseSocket() {
socket.destroy();
$this.emit("close");
};
/*
Function to parse a string to a object
#s: String of the object that will be parsed
#return: Object of the parsed string
*/
function parseResponse(s){
var response = [];
var records = s.split("|");
response = records.map(function(k){
var args = k.split(" ");
var thisrec = { };
args.forEach(function(v) {
if(v.indexOf("=") > -1) {
var key = tsunescape(v.substr(0, v.indexOf("=")));
var value = tsunescape(v.substr(v.indexOf("=")+1));
if(parseInt(value, 10) == value) value = parseInt(value, 10);
thisrec[key] = value;
} else {
thisrec[v] = "";
};
});
return thisrec;
});
if(response.length === 0) {
response = null;
} else if(response.length === 1) {
response = response.shift();
};
return response;
};
/*
Function to write commands into the socket
*/
function checkQueue() {
if(!executing && queue.length >= 1){
executing = queue.shift();
socket.write(executing.text + "\n");
};
};
/*
Function to escape a telnet string
#s: String that want to be escaped
#return: The escaped string
*/
function tsescape(s) {
return s
.replace(/\\/g, "\\\\")
.replace(/\//g, "\\/")
.replace(/\|/g, "\\p")
.replace(/\n/g, "\\n")
.replace(/\r/g, "\\r")
.replace(/\t/g, "\\t")
.replace(/\v/g, "\\v")
.replace(/\f/g, "\\f")
.replace(/ /g, "\\s");
};
/*
Function to unescape a telnet string
#s: String that want to be unescaped
#return: The unescaped string
*/
function tsunescape(s) {
return s
.replace(/\\s/g, " ")
.replace(/\\p/g, "|")
.replace(/\\n/g, "\n")
.replace(/\\f/g, "\f")
.replace(/\\r/g, "\r")
.replace(/\\t/g, "\t")
.replace(/\\v/g, "\v")
.replace(/\\\//g, "\/")
.replace(/\\\\/g, "\\");
};
};
util.inherits(TeamspeakQueryClient, events.EventEmitter);
How I open the class
if I call example one all works fine but example two has the descriped error.
Example 1:
test1 = new TeamspeakQueryClient({
"alias": "First-Coder Testinsance",
"ip": "first-coder.de",
"port": 10011,
"client": "serveradmin",
"password": "SECURE"
});
Example 2:
test1 = new TeamspeakQueryClient({
"alias": "First Insance",
"ip": "HIDDEN",
"port": HIDDEN,
"client": "serveradmin",
"password": "SECURE"
});
test2 = new TeamspeakQueryClient({
"alias": "Second Instance",
"ip": "HIDDEN",
"port": HIDDEN,
"client": "serveradmin",
"password": "SECURE"
});
Screenshots
Picture of the error in the console

According to your error, your second instance is not sending the correct login:
error id=520 msg=invalid\sloginname\sor\spassword
The additional errors displayed are due to your code not handling errors correctly.
For example:
socket.on("connect", function() {
...
if(err === null) {
if(err.id === 3329) {
If err === null, why would err have an element id?
Most likely this is code error, and you actually meant err !== null
$this.SendCommand("serverlist", null, function(err, response, rawResponse){
console.log(response);
if(response[0] === undefined) {
This error triggers because the (above) previous error was not caught.
At this point, the client is not logged in (authorized).
So when the serverlist command is sent, it riggers another error.
This additional error is also no handled, instead response is immediately used.

What in this IndexedDB code is causing the device storage to fill up to 1.6GB?

Our application that utilizes IndexedDB to track tallies of data over periods of time. In using the app for a number of months, it seems that there is some sort of storage leak causing a relatively small amount of data to require 1.6 GB of storage on the device?
The app has a feature to download its full data as a ZIP file, and that file is under 50KB. So there must be a long-term leak somewhere. What we're trying now is to download the data, clear storage, and re-import to track down where this leak might be.
However, looking at the following code that interacts with IndexedDB, it's not obvious to me where that leak may be:
// Initializing the Database
if(!dbengine){
dbengine = this;
var request = window.indexedDB.open("DB", 1);
request.onerror = function(event) {
throw new Error("Error opening indexedDb")
};
// This creates the schema the first time around
request.onupgradeneeded = (event) => {
event.target.result.createObjectStore("db", { keyPath: 'id' });
};
request.onsuccess = (event) => {
dbengine.db = event.target.result;
var dbReadyEvent = new CustomEvent('db-ready', {});
document.dispatchEvent(dbReadyEvent);
dbengine.db.onerror = function(event) {
throw new Error("Database error: " + event.target.errorCode);
};
dbengine.db.onabort = function(event) {
throw new Error("Database aborted: " + event.target.error);
// This is the error that is being called for us - QuotaExceededError
};
};
}// if !dbengine
var initialTransaction = dbengine.db.transaction(['db'], 'readwrite');
initialTransaction.onabort = (event) => {
var error = event.target.error; // DOMError
alert(error.name);
} // onabort
initialTransaction.objectStore('db').openCursor().onsuccess = (event) => {
var cursor = event.target.result;
if(cursor) {
this.encryption.loadIdentity((success) => {
if(success) {
this.loadDb(() => {
document.dispatchEvent(new CustomEvent('api-ready', {}));
setInterval(this.syncDb.bind(this), this.syncInterval);
this.syncDb();
});
} else {
document.dispatchEvent(new CustomEvent('api-fail', {}));
}
});
} else {
initialTransaction.objectStore('db').add({
/* [...] */
});
document.dispatchEvent(new CustomEvent('db-created', {}));
} // if/else cursor
}; // objectStore
loadDb(callback) {
this._tallies = [];
this._collections = [];
var dbStore = dbengine.db.transaction(['db'], 'readwrite').objectStore('db');
dbStore.get(1).onsuccess = (event) => {
var result = event.target.result;
var tallies = result.tallies;
if(result.tallies.length !== 0) {
tallies = this._encryption.decrypt(result.tallies);
}
tallies.forEach(((t) => {
/* [...] */
}));
var collections = result.collections;
if(collections.length !== 0) {
collections = this._encryption.decrypt(result.collections);
}
collections.forEach(((c) => {
/* [...] */
}));
callback()
}
} // loadDb
logout() {
var dbStore = dbengine.db.transaction(['db'], 'readwrite').objectStore('db');
var request = dbStore.get(1);
request.onsuccess = function(e) {
delete e.currentTarget.result.identity;
dbStore.put(e.currentTarget.result);
redirectTo('welcome');
};
} // logout
syncDb() {
var tallyDataString = JSON.stringify(this.tallies);
var collectionDataString = JSON.stringify(this.collections);
var encryptedTallyDataString = this._encryption.encrypt(tallyDataString);
var encryptedCollectionDataString = this._encryption.encrypt(collectionDataString);
var dbStore = dbengine.db.transaction(['db'], 'readwrite').objectStore('db');
dbStore.get(1).onsuccess = (event) => {
var data = event.target.result;
if(data.tallies !== encryptedTallyDataString) {
data.tallies = encryptedTallyDataString;
dbStore.put(data);
}
if(data.collections !== encryptedCollectionDataString) {
data.collections = encryptedCollectionDataString;
dbStore.put(data);
}
var syncEvent = new CustomEvent('sync', {});
document.dispatchEvent(syncEvent);
} // onsuccess
dbStore.get(1).onabort = (event) => {
var error = event.target.error; // DOMError
// if (error.name == 'QuotaExceededError') {
// alert('Sync failed. Quota exceeded.')
// }
alert(error.name);
} // onabort
} // syncDb
loadIdentity(callback) {
var dbStore = dbengine.db.transaction(['db'], 'readwrite').objectStore('db');
dbStore.get(1).onsuccess = (event) => {
var result = event.target.result;
if(!result.identity || !result.identity.publicKey || !result.identity.privateKey) {
if(window.location.pathname !== "/app/welcome/") {
redirectTo('welcome');
}
}
this.identity = {
/* [...] */
};
var solid = false;
if(result.identity.publicKey && result.identity.privateKey) {
solid = true;
}
callback(solid);
};
} // loadIdentity
setIdentity(identity, username) {
var dbStore = dbengine.db.transaction(['db'], 'readwrite').objectStore('db');
var getRequest = dbStore.get(1);
getRequest.onsuccess = (event) => {
var result = event.target.result;
result.identity = {
/* [...] */
};
this.identity = identity;
var request = dbStore.put(result);
} // getRequest
} // setIdentity

db value becomes null or even on indexdb open it does not go into onsuccess or upgradeneeded functions

(function () {
var db;
function openDB(dbname, dbtable, keypath) {
var version = 1;
// open the database
var indexeddb_request = indexedDB.open( dbname, version ); // connect + open database
// if error
indexeddb_request.onerror = function ( event ) {
console.log( event.target );
console.trace();
}
// if success
indexeddb_request.onsuccess = function ( event ) {
console.log( event.target );
console.trace();
db = event.target.result;
}
// if onupgradeneeded
indexeddb_request.onupgradeneeded = function( event ) {
console.log( event.target );
console.trace();
db = event.target.result;
var objectStore = db.createObjectStore( dbtable, { keyPath: 'url' } );
}
}
function getObjectStore(store_name, mode) {
var tx = db.transaction(store_name, mode);
return tx.objectStore(store_name);
}
function addPublication(dbtable, data) {
console.log("addPublication arguments:", arguments);
var store = getObjectStore(dbtable, 'readwrite');
var req;
try {
for (var i in data) {
req = store.add(data[i]);
}
//req = store.add(data);
} catch (e) {
if (e.name == 'DataCloneError')
displayActionFailure("This engine doesn't know how to clone a Blob, " +
"use Firefox");
throw e;
}
req.onsuccess = function (evt) {
console.log("Insertion in DB successful");
};
req.onerror = function() {
console.error("addPublication error", this.error);
};
}
function displayPubList(store, store_name) {
console.log("displayPubList");
if (typeof store == 'undefined')
store = getObjectStore(store_name, 'readonly');
var req;
req = store.count();
// Requests are executed in the order in which they were made against the
// transaction, and their results are returned in the same order.
// Thus the count text below will be displayed before the actual pub list
// (not that it is algorithmically important in this case).
req.onsuccess = function(evt) {
console.log("Count of records " + evt.target.result +
' record(s) in the object store.');
};
req.onerror = function(evt) {
console.error("add error", this.error);
};
var i = 0;
req = store.openCursor();
req.onsuccess = function(evt) {
var cursor = evt.target.result;
// If the cursor is pointing at something, ask for the data
if (cursor) {
console.log("displayPubList cursor:", cursor);
req = store.get(cursor.key);
req.onsuccess = function (evt) {
var value = evt.target.result;
console.log("Key :" + cursor.key + 'value :' + value.ssn );
};
// Move on to the next object in store
cursor.continue();
// This counter serves only to create distinct ids
i++;
} else {
console.log("No more entries");
}
};
}
openDB("abc","names","ssn");
const customerData = [
{ ssn: "444-44-4444", name: "Bill", age: 35, email: "bill#company.com" },
{ ssn: "555-55-5555", name: "Donna", age: 32, email: "donna#home.org" }
];
addPublication("names",customerData);
displayPubList("abc","names");
})();
I'm trying to test the above code from chrome developer tools. But looks like some cases the call goes into sucess or upgradeneeded. And many times its always null. Please let me know if i'm doing something wrong here.

Gettings response (headers and body) in firefox extension

I'm trying to implement a feature that will give me the response text and (all the) response headers of each http request in the browser,
I've read a bit here: http://www.softwareishard.com/blog/firebug/nsitraceablechannel-intercept-http-traffic/
I had no idea how to extract the response from the TracingListener object. Anyone dealt with that before?? thanks!
My code:
const Cc = Components.classes;
const Ci = Components.interfaces;
// Helper function for XPCOM instanciation (from Firebug)
function CCIN(cName, ifaceName) {
return Cc[cName].createInstance(Ci[ifaceName]);
}
// get the observer service and register for the two coookie topics.
var observerService = Components.classes["#mozilla.org/observer-service;1"]
.getService(Components.interfaces.nsIObserverService);
// Copy response listener implementation.
function TracingListener() {
this.originalListener = null;
this.receivedData = []; // array for incoming data.
}
TracingListener.prototype =
{
originalListener: null,
receivedData: null, // array for incoming data.
onDataAvailable: function(request, context, inputStream, offset, count)
{
var binaryInputStream = CCIN("#mozilla.org/binaryinputstream;1",
"nsIBinaryInputStream");
var storageStream = CCIN("#mozilla.org/storagestream;1", "nsIStorageStream");
binaryInputStream.setInputStream(inputStream);
storageStream.init(8192, count, null);
var binaryOutputStream = CCIN("#mozilla.org/binaryoutputstream;1",
"nsIBinaryOutputStream");
binaryOutputStream.setOutputStream(storageStream.getOutputStream(0));
// Copy received data as they come.
var data = binaryInputStream.readBytes(count);
this.receivedData.push(data);
binaryOutputStream.writeBytes(data, count);
this.originalListener.onDataAvailable(request, context,storageStream.newInputStream(0), offset, count);
},
onStartRequest: function(request, context) {
this.originalListener.onStartRequest(request, context);
},
onStopRequest: function(request, context, statusCode)
{
try {
if (request.originalURI && piratequesting.baseURL == request.originalURI.prePath && request.originalURI.path.indexOf("/index.php?ajax=") == 0) {
dump("\nProcessing: " + request.originalURI.spec + "\n");
var date = request.getResponseHeader("Date");
var responseSource = this.receivedData.join();
dump("\nResponse: " + responseSource + "\n");
piratequesting.ProcessRawResponse(request.originalURI.spec, responseSource, date);
}
} catch(e) { dumpError(e);}
this.originalListener.onStopRequest(request, context, statusCode);
},
QueryInterface: function (aIID) {
if (aIID.equals(Ci.nsIStreamListener) ||
aIID.equals(Ci.nsISupports)) {
return this;
}
throw Components.results.NS_NOINTERFACE;
}
}
// create an nsIObserver implementor
var listener = {
observe : function(aSubject, aTopic, aData) {
// Make sure it is our connection first.
//if (aSubject == gChannel) {
var httpChannel = aSubject.QueryInterface(Components.interfaces.nsIHttpChannel);
if (aTopic == "http-on-modify-request") {
// ...
httpChannel.setRequestHeader("X-Hello", "World", false);
} else if (aTopic == "http-on-examine-response") {
// ...
//alert(JSON.stringify(aData));
var newListener = new TracingListener();
aSubject.QueryInterface(Ci.nsITraceableChannel);
newListener.originalListener = aSubject.setNewListener(newListener);
alert(httpChannel.getResponseHeader("Location"));
//alert(httpChannel.getAllResponseHeaders());
}
//}
},
QueryInterface : function(aIID) {
if (aIID.equals(Components.interfaces.nsISupports) ||
aIID.equals(Components.interfaces.nsIObserver))
return this;
throw Components.results.NS_NOINTERFACE;
}
};
observerService.addObserver(listener, "http-on-modify-request", false);
observerService.addObserver(listener, "http-on-examine-response", false);