Easyrtc server with login

[Elvin Mirze]

Hi,

We have create Simple login. If same user log in different browser tab then the second tab automatically log out. my code check , but logged out both of them. Please any suggestion?

[Rod Apeldoorn]

If I understand, you want to prevent the same user from logging in twice.

Here's the steps I would use to accomplish this:

• In client, set the username prior to connecting - easyrtc.setUsername() and easyrtc.setCredential()
  
• In server, create a listener for the authenticate event
  
• Within the listener:
  
• Verify authentication information
• Scan through authenticated users on server for other user with same username
• To disconnect the new connection, send an error to the next() callback.
• To disconnect the previous connection, get its connectionObj and force it to disconnect. Then run next callback with no error.

Rod Apeldoorn,

EasyRTC Server Lead,

http://easyrtc.com

[Elvin Mirze]

Thanks Rod. Can you give me part of code about it? i have no idea about that.

[Rod Apeldoorn]

Hi Elvin,

I'm afraid this problem has too many parts for me to answer in code here on the board. It would require a demo app to be written which would be a bit of a stretch time-wise for me at the moment.

[Horia Schiau]

I had some similar task. Rod helped me with it. I used async to go through all connections.
I haven't tested the code...I use this a bit differently ( to disconnect new connection ) on the room join event.

 var onAuthenticate = function(socket, easyrtcid, appName, username, credential, easyrtcAuthMessage, next) {
     
     // TODO : Verify authentication information

     var previousConn = false;
     app.getConnectionEasyrtcids(function(error, id_list) {
         console.log('Ids connected now :', id_list);
         async.each(id_list, function(id, cb) {
             app.connection(id, function(er, cObj){
                 if (er) {
                     cb(er);
                 } else {
                     if (cObj.getUsername() == username && cObj.getEasyrtcid() != easyrtcid) {
                         previousConn = cObj;
                     }
                     cb();
                 }
             });
         }, function(err) {
             if (err) {
                 next(err);
             } else {
                 if (previousConn != false) {
                     previousConn.removeConnection(function(e){
                         console.log('Removed previous connection.');
                         next();
                     });
                 } else {
                     easyrtc.events.emitDefault("authenticate", socket, easyrtcid, appName, username, credential, easyrtcAuthMessage, next);
                 }
             }
         });

     });
 });

Hope this will put you on the right path.
        

[Elvin Mirze]

Hi, thanks for answer.but i dont know where implement this code.

[Gonzalo Amadio]

Hi Elvin, 

That code you have to put it into the server.js file.

By doing :

var onAuthenticate = function(socket, easyrtcid, appName, username, credential, easyrtcAuthMessage, next) {

//code
}

easyrtc.events.on("authenticate", onAuthenticate);

You are overriding the listener for the authentication method. You can see the default behaviour into easyrtc_default_listeners.js file.

In this case, the "authenticate" event is fired, when you execute (for example if you use easyApp) 

easyrtc.easyApp(/*params*/)

Into you own logic on the client side.

 

[Elvin Mirze]

Thanks a lot Gonzalo