http-traffic-simulator

A nodejs http traffic simulator that scales.

Generate HTTP requests by utilizing the nodejs cluster module. Each worker of the cluster is responsible to create clients that generate requests. This architecture enables the simulator to scale in really big throughputs. It is suggested to balance the workers over the cores of your system. Create as many workers as your system cores.

Installation

$ npm install http-traffic-simulator

Quick start

var trafficSimulator = require('http-traffic-simulator');
function run(){
    trafficSimulator.testDuration(5);//-1 for infinite run
    trafficSimulator.workers(1);
    trafficSimulator.clients(2)
    trafficSimulator.throttleRequests_bps(50000);//-1 for no throttling
    trafficSimulator.randomDelayBetweenRequests('0.5-1.1');

    trafficSimulator.setFunc('request',requestFunc);

    trafficSimulator.start();

    trafficSimulator.events.on('end',function (stats) {
        console.log("Exiting..");
        process.exit();
    });
}

var requestFunc= function(){
    var options = {};
    options['host'] = 'www.example.com';
    options['port'] = '80';
    options['path'] = '/';
    options['method'] = 'GET';

    var req=trafficSimulator.request(options,function(response){
        console.log("Response: %s",response.statusCode);
        response.setEncoding('utf8');
        response.on('data',function(chunk){
            console.log(chunk.length)
        });
    });
}

run();

Features

• Throttling
• Clustering
• Set delay between requests
• Random or consecutive generation of requests
• Statistics aggregation
• Set duration or total number of requests to be executed during the test
• Utilizing keep-alive-agent module for HTTP connection pooling that re-uses sockets

License

The MIT License (MIT)

Copyright (c) 2014 Ioannis Skitsas [e-mail]

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:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.