javascript - node-ipc cluster only using 1 worker -

i using node-ipc alongside cluster in nodejs on windows 8.1, , have clustered ipc server , created many processes have cpu's (4 in case), of them sharing same port , id.

i connecting multiple clients clustered server , expecting master process delegate task worker free. not work , master chooses same worker.

i have checked , worker processes running. how can master chooses least busy worker every time?

below server code

var os = require('os'); var numcpus = os.cpus().length; var cluster = require('cluster'); var ipc = require('node-ipc');  if (cluster.ismaster) {      console.log("i master, launching workers");      (var = 0; < numcpus; i++) {         cluster.fork();         console.log("worker " + + " launched");     }  } else {      ipc.config.id = 'worldserver';     ipc.config.retry= 1500;     ipc.config.silent = true;      console.log(`i worker #${cluster.worker.id}`, process.pid);      ipc.serve(         function(){             ipc.server.on('sayhello', function(data,socket) {                     console.log(`i worker #${cluster.worker.id}`, process.pid);                     ipc.server.emit(                         socket,                         'message',                         'hello'                     );                 }             );             ipc.server.on('error', function(e) {                 console.log('ipc error!!', e);             });     });      ipc.server.start(); } 

here client code

var ipc=require('node-ipc');  ipc.config.id   = 'hello'; ipc.config.retry= 1500; ipc.config.silent = true;  setinterval(function() {     ipc.connectto(         'worldserver',         function(){                  console.log("sending something");                 ipc.of.worldserver.emit(                     'sayhello',                     "true"                 );                  ipc.of.worldserver.on(                     'message',                     function(data){                         console.log('i got message server:');                         console.log(data);                     }                 );            }     ); }, 20);