Disabling Socket.io heartbeats (Node.js)

Question

The socket.io documentation mentions that heartbeats can be disabled like so:

io.disable('heartbeats');

Unfortunately, while this seems to stop the hearbeats from being sent, the clients still disconnect when they are not sending hearbeats.

The following does not function either:

io.set('heartbeats', false);

I have tried setting some intervals to 0, without success:

io.set('heartbeat timeout', 0);
io.set('heartbeat interval', 0);

Any suggestions on what might properly disable heartbeats?

Solution 1

The code is

io.disable('heartbeats');

Tested successfully on socket.io v0.8.7

Without disabling

debug - emitting heartbeat for client 299833185260419425
debug - websocket writing 2::
debug - set heartbeat timeout for client 299833185260419425
debug - got heartbeat packet
debug - cleared heartbeat timeout for client 299833185260419425
debug - set heartbeat interval for client 299833185260419425

With disabling

debug - client authorized

info  - handshake authorized 1205975980561506547
debug - setting request GET /socket.io/1/websocket/1205975980561506547
debug - client authorized for 
debug - websocket writing 1::
debug - websocket writing 5:::{"name":"news","args":[{"hello":"foo"}]}

Solution 2

There is something wrong with heartbeats. I have latest socket.io and node 0.6.X

   info  - socket.io started
   debug - client authorized
   info  - handshake authorized 734447051478827620
   debug - setting request GET /socket.io/1/websocket/734447051478827620
   debug - client authorized for
   debug - websocket writing 1::
   debug - websocket writing 5:::{"name":"hello"}
   info  - transport end (socket end)
   debug - set close timeout for client 734447051478827620
   debug - cleared close timeout for client 734447051478827620
   debug - discarding transport

// server code
var io = require('socket.io').listen(8080);
io.disable('heartbeats');

io.sockets.on('connection', function (socket) {
  socket.emit('hello');
});

Client is disconnected right after connection.

Solution 3

Set the log level of socket.io, with log level 2 we wont see all the heartbeats of each socket but only the handshakes and disconnections

io.set('log level', 2);