Cluster losts handle when data size is large #13778

const cluster = require('cluster');
const net = require('net');

var doWork = function(worker) {
   var sock = new net.Socket();
   // available port and host
    sock.connect(443, 'google.com', function() {

        var data = [];
        for(var i=0; i<30000; i++) {
            data[i] = '1';
        };
       // 1. send to worker data with socket
        console.log('master to worker with socket %s', sock);
        worker.send({cmd:'syn', data:data}, sock);
    });
};

if ( cluster.isMaster ) {
    var num = 5;
    var workers = [];
    for(var i=0; i<num; i++) {
        workers[i] = cluster.fork();
        workers[i].on('message', function(m, h) {
            // 3. received from worker, socket is undefined.
            console.log('admin recv m %s, h %s, isNS', m.cmd, h, h? h instanceof net.Socket : 'na');
        });
    }
    for(var i=0; i<num; i++) {
        doWork(workers[i]);
    }
} else {
    process.on('message', function(m, h) {
       // 2. worker send data to master with socket
        console.log('worker m %s, h %s, isNS', m.cmd, h, h ? h instanceof net.Socket : 'na');
        process.send({cmd:'ack', data:m.data}, h);
    });
}