client-radius.js

/* eslint-disable no-console */
require('dotenv').config();

const radius = require('radius');
const dgram = require('dgram');

const RADIUS_SECRET = process.env.RADIUS_SECRET;
const client = dgram.createSocket('udp4');
const sent_packets = {};

radius.add_dictionary(`${__dirname}/src/radius-server/dictionary.mikrotik`);

client.bind(49001);

client.on('message', function (msg, rinfo) {
  const packetResp = radius.decode({
    packet: msg,
    secret: RADIUS_SECRET,
  });

  const request = sent_packets[packetResp.identifier];

  // verify responses to make sure you are talking to a server with the same shared secret
  const valid_response = radius.verify_response({
    response: msg,
    request: request.raw_packet,
    secret: request.secret,
  });

  console.log('### LOGGING - packet.code:', packetResp.code);
  console.log('### LOGGING - packet.identifier:', packetResp.identifier);
  console.log('### LOGGING - packet.length:', packetResp.length);

  console.log('### LOGGING - packet.attributes contains');
  console.log(packetResp.attributes);
  console.log('### END LOGGING');

  console.log('### LOGGING - packet.raw_attributes contains');
  console.log(packetResp.raw_attributes);
  console.log('### END LOGGING');

  console.log('### LOGGING - rinfo contains');
  console.log(rinfo);
  console.log('### END LOGGING');

  if (valid_response) {
    console.log(`Got valid response: ${packetResp.code} for packet id ${packetResp.identifier}`);
  } else {
    console.log(`WARNING! Invalid response: ${packetResp.code} for packet id ${packetResp.identifier}`);
  }

  client.close();
});

// Packet 1
const packet = {
  code: 'Access-Request',
  secret: RADIUS_SECRET,
  identifier: 0,
  attributes: [
    ['NAS-IP-Address', '10.5.5.5'],
    ['User-Name', 'oka'],
    ['User-Password', '123'],
  ],
};

const encodedPacket = radius.encode(packet);

sent_packets[packet.identifier] = {
  raw_packet: encodedPacket,
  secret: packet.secret,
};

client.send(encodedPacket, 0, encodedPacket.length, 1812, 'localhost');