Socket.io - failed: Connection closed before receiving a handshake response

Question

Socket.io for NodeJS doesn\'t seem to work as a websocket server

For some reason, socket.io ALWAYS fallback to the long polling and if I force the w

Answer 1

I had the exact same issue because I was defining 'io' twice. Double check where you are defining io in your code and ensure you are not defining the variable io twice.

Example of what I was doing wrong:

var server = require('http').createServer(app);
var io = require('socket.io')(server);

var io = require('socket.io').listen(server.listen(config.port, config.ip, function () {
    console.log('Express server listening on %d, in %s mode', config.port,     
    app.get('env'));
}));

Example of what fixed the issue:

var server = require('http').createServer(app);
var io = require('socket.io')(server);

server.listen(config.port, config.ip, function () {
    console.log('Express server listening on %d, in %s mode', config.port, 
    app.get('env'));
});