devsim.js

// Simulate mdash.net device. To run this script, install ws library first:
// $ npm -g i ws
// $ node devsim.js MDASH_DEVICE_TOKEN

const Websocket = require('ws');  // npm install -g ws
const pass = process.argv[2];     // Device password
const addr = 'wss://mdash.net/api/v2/rpc?access_token=' + pass;
const ws = new Websocket(addr, {origin: addr});

ws.on('error', msg => console.log(msg.toString()));
ws.on('message', msg => {
  const obj = JSON.parse(msg.toString());
  console.log('Got message:', obj);
  if (obj.method == 'Sys.GetInfo')  // Answer on Sys.GetInfo RPC call
    ws.send(JSON.stringify({id: obj.id, result: {app: 'sim', arch: 'js'}}));
});

// Send a HTTP.Request notification
setTimeout(
    ev => ws.send(JSON.stringify({
      method: 'HTTP.Request',
      params: {
        url: 'http://HOST:PORT',
        method: 'POST',
        body: 'my data',
        headers: {HDR1: 'custom header'}
      }
    })),
    1000);