'use strict'; const net = require('net'); var errors = 0; var server = net.Server(function(socket) { socket.on('error', function() { errors++; }); }); //server.maxConnections = 128; server.listen(9000); var oldConnections, oldErrors; setInterval(function() { if (oldConnections != server.connections) { oldConnections = server.connections; console.log('SERVER %d connections: %d', process.pid, server.connections); } if (oldErrors != errors) { oldErrors = errors; console.log('SERVER %d errors: %d', process.pid, errors); } }, 1000);