javascript - Nodejs How to access a tcp socket outside the callback function -

if create server using code:

var net = require('net'); server = net.createserver(function(sock){     /** code here **/ }); server.listen(9000); 

how access socket outside of callback function? me able create array/list of sockets can store , access whenever need send data specific client.

i did have weird workaround using don't think correct way. added socket server object saying:

this.socket = sock 

inside callback function of createserver.

then can access saying server.socket useful if there 1 client.

to better understand trying accomplish have created class has constructor function holds code:

this.server = net.createserver(this.handleconnection) 

this class has method handleconnection use callback. have method called start can called port parameter initiate server.listen(port).

what want accomplish method below:

sendcommand(message, socket){     socket.write(message); } 

this way server can send message client function not within callback function of createserver. keep in mind doing within class using keyword within callback function accesses net server object , not class created.

every example see extremely simple tcp server has 1 message sent server within callback function. if shed light on problem great thanks!

i'm not sure if you're after, this.

var net = require('net'); var conns = [];  var server = net.createserver(function(sock){     conns.push(sock);      sock.on('close', function (){         // todo: remove conns     }); });  server.listen(9000);