@applitools/execution-grid-tunnel/src/utils/connectivity-test.js

Allows user to run tests with exection-grid and navigate to private hosts and ips

const net = require('net')
const tls = require('tls')
module.exports = {connectivityTest}

function connectivityTest({host, port = 80, protocol = 'tcp', timeout = 10000}) {
  return new Promise((resolve) => {
    const startTime = Date.now()
    const remoteConnection =
      protocol == 'tcp' ? net.connect({port, host, timeout}) : tls.connect(port, host, {timeout})

    remoteConnection.once('connect', () => {
      remoteConnection.end()
      resolve({success: true, timeTaken: Date.now() - startTime})
    })

    remoteConnection.once('error', (error) => {
      remoteConnection.end()
      resolve({
        success: false,
        timeTaken: Date.now() - startTime,
        error: error.code,
        errorMessage: error.stack || error.message,
      })
    })

    remoteConnection.once('timeout', () => {
      remoteConnection.end()
      resolve({success: false, timeTaken: Date.now() - startTime, error: 'CONNECTION_TIMEOUT'})
    })

    // remoteConnection.setTimeout(timeout)
  })
}