Pulling out the web-socket URL of a Chrome Debugging Protocol run – can be used to connect other services (e.g. Puppeteer) to CDP

setup-cdp-ws.js

const request = require('request');

// Assuming CDP is running on localhost
Browser.prototype.setupWSURL = async function() {
  let that = this;
  let url = `http://localhost:${this.port}/json/version`;
    request(url,
      function(err, resp, body) {
        if (!err) {
          that.webSocketDebuggerUrl = JSON.parse(body).webSocketDebuggerUrl;
        }
    });
}