Using socket.io in multi files

Question

I am using Node.js Express with socket.io.

//app.js
var server = http.createServer(app).listen(app.get('port'), function(){
  console.log('Express server listening on port ' + app.get('port'));
});
var io = require('socket.io').listen(server,{'log level': 1});

and if I want to do "io.sockets.emit" only for people watching index page which is provided by index.js how can I call "io.sockets.emit" in index.js other than using "require" for app.js(main file)?

I've googled about it though I couldn't find any sample source code which use socket.io in multiple files.

Did you try out the example bellow, was this what you where searching for? — Angular University, Jan 24 '14 at 19:48

score 2 · Accepted Answer · edited May 23 '17 at 12:21

2

If your backend is separated in several module files like index.js, it's possible to pass variables to modules upon initialization.

Try importing index.js after initializing socket.io, and pass io to the index.js module being imported:

require('./index.js')(io);

Using socket.io in multi files

1 Answers1