How to resolve TypeError: Cannot read property 'connected' of undefined

[subhrajyotiw5rtc]

Hi,I am getting the following error while using socket.io version 1.3.5 with node.js for my app.

error:

Missing error handler on `socket`.
TypeError: Cannot read property 'connected' of undefined
    at Socket.<anonymous> (C:\Documents and Settings\Subhrajyoti\Desktop\Restore
\htdocs\video broadcast\server.js:68:13)
    at Socket.emit (events.js:95:17)
    at Socket.onevent (C:\Documents and Settings\Subhrajyoti\Desktop\Restore\htd
ocs\video broadcast\node_modules\socket.io\lib\socket.js:330:8)
    at Socket.onpacket (C:\Documents and Settings\Subhrajyoti\Desktop\Restore\ht
docs\video broadcast\node_modules\socket.io\lib\socket.js:290:12)
    at Client.ondecoded (C:\Documents and Settings\Subhrajyoti\Desktop\Restore\h
tdocs\video broadcast\node_modules\socket.io\lib\client.js:193:14)
    at Decoder.Emitter.emit (C:\Documents and Settings\Subhrajyoti\Desktop\Resto
re\htdocs\video broadcast\node_modules\socket.io\node_modules\socket.io-parser\n
ode_modules\component-emitter\index.js:134:20)
    at Decoder.add (C:\Documents and Settings\Subhrajyoti\Desktop\Restore\htdocs
\video broadcast\node_modules\socket.io\node_modules\socket.io-parser\index.js:2
47:12)
    at Client.ondata (C:\Documents and Settings\Subhrajyoti\Desktop\Restore\htdo
cs\video broadcast\node_modules\socket.io\lib\client.js:175:18)
    at Socket.emit (events.js:95:17)
    at Socket.onPacket (C:\Documents and Settings\Subhrajyoti\Desktop\Restore\ht
docs\video broadcast\node_modules\socket.io\node_modules\engine.io\lib\socket.js
:99:14)

And server file is given below.

server.js.

var port=8888;
var express=require('express');
var morgan = require('morgan');
var http=require('http');
var bodyParser= require('body-parser');
var methodOverride = require('method-override');
var mongo = require('mongojs');
var database='Oditek';
var collections=['video'];
var app= express();
var server=http.Server(app);
var io=require('socket.io')(server);
var db = mongo.connect("127.0.0.1:27017/"+database, collections);
app.use(express.static(__dirname + '/public'));     // set the static files location /public/img will be /img for users
app.use(morgan('dev'));                     // log every request to the console
app.use(bodyParser.urlencoded({ extended: false }))    // parse application/x-www-form-urlencoded
app.use(bodyParser.json())    // parse application/json
app.use(methodOverride());                  // simulate DELETE and PUT
db.on('ready', function () {
    console.log('database connected')
});
app.get('/',function(req,res){
    res.sendfile('view/login.html');
});
app.post('/login',function(req,res){
    var username=req.body.username;
    var password=req.body.userpassword;
    if(username && password){
        db.video.findOne({
            username:username,
            password:password
        },function(err,doc){
            if(doc){
                console.log('login',doc);
                res.send(doc);
            }
            if(err){
                console.log('login12',err);
                res.send("could not login");
            }
        });
    }
});
app.get('/video',function(req,res){
    res.sendfile('view/video.html');
});

//socket----programming//
var roomid;
var clients={};
io.sockets.on('connection',function(socket){
    //console.log(socket);
    roomid=socket.handshake.query.roomid;
    var usertype=socket.handshake.query.usertype;
    socket.on('admin-join',function(data){
        console.log('admin',data);
        if(data.IsJoinAdmin){
            clients={
                "socket":roomid
            }
            socket.join(roomid);
        }
    });
    socket.on('user-join',function(data){
        console.log('user',data);
        if(data.isUserJoin){
            io.sockets.connected[clients.socket].emit('user-already-joined',data);
            socket.join(roomid);
        }
    });
    socket.on('send-broadcasting-message',function(data){
        console.log('message',data)
        io.to(roomid).emit('sending-broadcasting',data);
    });

});
server.listen(port);
console.log('server is listening on the port'+port);

Please help me to resolve this error.

[dsalcedo]

Yor code its wrong, should be:

io.on('connection', function (socket) {
  socket.on('event', function(){

     });
});

For questions use stackoverflow, issues its for socket.io engine bugs/issues/errors.
code strong!!

[dsalcedo]

Please close this question listed as 'issue'. For questions please use stackoverflow.
Code strong.

[mike-aungsan]

@dsalcedo

I have the same problem.

I use exactly the same code from API

https://github.com/socketio/socket.io#namespaceclientsfnfunction

io.clients(function (err, clients) {
    ^

TypeError: undefined is not a function
at Namespace. (/home/test/socketio/socketio.js:64:9)
at Namespace.emit (events.js:107:17)
at Namespace.emit (/home/test/socketio/node_modules/socket.io/lib/namespace.js:205:10)
at /home/test/socketio/node_modules/socket.io/lib/namespace.js:172:14
at process._tickDomainCallback (node.js:381:11)
Program node server.js exited with code

[mike-aungsan]

@subhrajyotiw5rtc
This might help
http://stackoverflow.com/questions/6563885/socket-io-how-do-i-get-a-list-of-connected-sockets-clients/13284150#13284150

[darrachequesne]

That issue was closed automatically. Please check if your issue is fixed with the latest release, and reopen if needed (with a fiddle reproducing the issue if possible).

[lensh]

you should use io.to(socketid).emit('user-already-joined',data) instead of io.sockets.connected[clients.socket].emit('user-already-joined',data);
about more,you can see my blog :http://blog.csdn.net/zls986992484/article/details/71599297

[zzxBear]

[Vue warn]: Error in render function: "TypeError: Cannot read property 'resolve' of undefined"

found in

--->

at D:\v-project\v-boot\src\App.vue

warn
(unknown) TypeError: Cannot read property 'resolve' of undefined
at Proxy.render (eval at (build.js:1377), :369:21)
at VueComponent.Vue._render (eval at (build.js:817), :3904:22)
at VueComponent.updateComponent (eval at (build.js:817), :2440:21)
at Watcher.get (eval at (build.js:817), :2779:25)
at new Watcher (eval at (build.js:817), :2762:12)
at mountComponent (eval at (build.js:817), :2444:17)
at VueComponent.Vue$3.$mount (eval at (build.js:817), :7572:10)
at VueComponent.Vue$3.$mount (eval at (build.js:817), :9671:16)
at init (eval at (build.js:817), :3359:13)
at createComponent (eval at (build.js:817), :4902:9)

[zzxBear]

这是啥问题，求大神解答

[notedit]

@zzxBear none of socketio's problom