[javascript] Node.js: socket.io close client connection

How can I close the socket connection on the client side?

I am using:

• socket.io 0.9
• node.js 0.10.15
• express 3.3.4

i.e.: call localhost/test
-- server side

var test = io
.of('/test')
.on('connection', function (socket) {

  console.log('open socket: ' + socket);

  socket.on('disconnect', function () {
    console.log('disconnected event');
    //socket.manager.onClientDisconnect(socket.id); --> endless loop with this disconnect event on server side
    //socket.disconnect(); --> same here
  });
});

-- client side

var socket = io.connect('http://localhost:3000/test');
socket.on('disconnect', function () {
   console.log('disconnect client event....');
});

socket.emit('getInitData', function (data) {
  .. do something with data
});

If I load the test-page I need some values from the server (getInitData).
On the first page visit I get the data once, on a reload or second visit I get it twice and so on.

The connection on the server side is beeing closed automatically on page reload and if you leave the page.
But on the client side the connection is still open.
How can I close the connection on the client side or check if there is already a open connection?

UPDATE
I tried now the following: (client side)

window.onbeforeunload = function(e) {
  socket.disconnect();
};

This triggers on the client side the disconnect event, but I still get the twice or tripple response.

try this to close the connection:

socket.close();

and if you want to open it again:

socket.connect();

I'm trying to close users connection in version 1.0 and found this method:

socket.conn.close()

The difference between this method and disconnect() is that the client will keep trying to reconnect to the server.

For socket.io version 1.4.5:

On server:

socket.on('end', function (){
    socket.disconnect(0);
});

On client:

var io = io();
io.emit('end');

socket.disconnect()

Only reboots the connection firing disconnect event on client side. But gets connected again.

socket.close()

Disconnect the connection from client. The client will keep trying to connect.

Did you try:

socket.disconnect() 

on client?

Just try socket.disconnect(true) on the server side by emitting any event from the client side.

socket.disconnect() is a synonym to socket.close() which disconnect the socket manually.

When you type in client side :

const socket = io('http://localhost');

this will open a connection with autoConnect: true , so the lib will try to reconnect again when you disconnect the socket from server, to disable the autoConnection:

const socket = io('http://localhost', {autoConnect: false});
socket.open();// synonym to socket.connect()

And if you want you can manually reconnect:

socket.on('disconnect', () => {
  socket.open();
});