wankdanker

http://www-personal.umich.edu/~bdr/et/mcast-windows.html

This page has Windows tools that can send and receive test multicast messages. With this tool, I have been able to run multiple instances of mcreceive.exe on the same machine. The both instances receive all messages sent by mcsend.exe.

https://gist.github.com/1336326

This page has code which can be compiled on Linux (and other Unix?). Multiple instances can be run and they will not argue about listening on the same UDP port.

wankdanker

/*jslint node: true, maxerr: 50, indent: 4 */

"use strict";

var clusterInstance;

var SimpleCluster = module.exports = function () {
	//there should only be one instance of this per process
	if (clusterInstance) {
		return clusterInstance;

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// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//

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//Benchmark calling a function passing it an anonymous function vs passing it a named function
//

var iterations = 100000;

function testAnon(fn) {
        console.time('test-anonymous-function');
        for (var x = 0; x < iterations; x++) {
                fn(function () {});
        }

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var udp = require('dgram');
var s = udp.createSocket('udp4');
s.bind(27016, '127.0.0.1');

var t;

s.on('message', function(data, remote) {
        var req = data.toString();

        if (req == 'go-ahead') {

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./bin/node-mysql-bindings-benchmark.js
Benchmarking CPP-MySQL:
**** Benchmark initialization time is 0.00s
**** 1000000 escapes in 0.17s (5882352/s)
**** 1000 sync reconnects in 0.09s (11111/s)
**** 10000 sync insertions in 0.16s (62500/s)
Benchmarking PHP-MySQL:
**** Benchmark initialization time is 0s
**** 1000000 escapes in 0.66s (1508394/s)
**** 1000 sync reconnects in 0.23s (4307/s)

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/*
  Permission to use, copy, modify, and/or distribute this software for any
  purpose with or without fee is hereby granted, provided that the above
  copyright notice and this permission notice appear in all copies.

  THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN

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var prompt = require('prompt');
var result2 = [];

//not sure what this does so don't know when it should be called.
prompt.start();
 
function getData() {
  prompt.get(['username', 'email'], function (err, result) {
    if (err) { return onErr(err); }
    console.log('Command-line input received:');

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Install

curl https://gist.githubusercontent.com/wankdanker/2f676cc85f52fd471567/raw -o /usr/local/bin/gen-mac; chmod 755 /usr/local/bin/gen-mac

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var dgram = require('dgram');
var socket = dgram.createSocket('udp4');

var testMessage = "[hello world] pid: " + process.pid;
var broadcastAddress = '255.255.255.255';
var broadcastPort = 5555;

socket.setBroadcast(true);
socket.bind(broadcastPort, '0.0.0.0');