@bettercorp/node-netflowv9/test/test.receiving.js

NetFlow Version 1,5,7,9 compatible library for Node.JS. It also support NetFlow v9 options template & data

var expect = require('chai').expect;
const Q = require('q-lite')
var dgram = require('dgram');
var NetFlowV9 = require('../netflowv9');

var VYOS_PACKET = '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';


describe('NetFlowV9', function () {
    describe('receiving', function () {
        it('should be able to receive vyos packet', async function () {
            var buffer = Buffer.from(VYOS_PACKET, 'hex');
            expect(buffer).to.have.length(VYOS_PACKET.length/2);
            
            var n9 = new NetFlowV9({port: 2055})

            let r
            n9.on('data', _r=>r=_r)
            
            const client = dgram.createSocket('udp4');
            client.send(buffer, 0, buffer.length, 2055, "127.0.0.1")

            await Q.delay(20)

            try {
                const templates = Object.values(n9.templates)[0]
                expect(templates).to.have.property('1024');
                expect(templates).to.have.property('1025');
                expect(templates).to.have.property('2048');
                expect(templates).to.have.property('2049');



                expect(r).to.have.property('header');
                expect(r).to.have.property('flows');

                var header = r.header;
                expect(header).to.have.property('version', 9);
                expect(header).to.have.property('count', 7);
                expect(header).to.have.property('uptime', 152731);
                expect(header).to.have.property('seconds', 1404209570);
                expect(header).to.have.property('sequence', 1);
                expect(header).to.have.property('sourceId', 0);

                var flows = r.flows;
                expect(flows).to.have.length(2);
                
                var f1 = flows[1];
                expect(f1).to.have.property('ipv4_src_addr', '10.100.0.84');
                expect(f1).to.have.property('ipv4_dst_addr', '192.0.76.2');
                expect(f1).to.have.property('in_pkts', 1);
            } finally {
                n9.server.close()
                client.close()
            }
        });
    });

});