emailjs-tcp-socket/test/echo.js

This shim brings the W3C Raw Socket API to node.js and Chromium. Its purpose is to enable apps to use the same api in Firefox OS, Chrome OS, and on the server.

const fs = require('fs')
const net = require('net')
const tls = require('tls')
const { join } = require('path')
const startTls = require('./starttls')
const { PORT_NET, PORT_STARTTLS, PORT_TLS } = require('./constants')

module.exports = function createServers () {
  const key = fs.readFileSync(join(__dirname, '..', 'crt', 'server.key'), 'utf8')
  const cert = fs.readFileSync(join(__dirname, '..', 'crt', 'server.crt'), 'utf8')
  const s1 = net.createServer(socket => { socket.pipe(socket) })
  const s2 = tls.createServer({ key, cert }, socket => { socket.pipe(socket) })
  const s3 = startTls.createServer(socket => {
    socket.upgrade({ key, cert, requestCert: false, rejectUnauthorized: false }, () => {
      socket.pipe(socket)
    })
  })

  const servers = [[s1, PORT_NET], [s2, PORT_TLS], [s3, PORT_STARTTLS]]
  const startServers = () => Promise.all(servers.map(([server, port]) => new Promise((resolve, reject) => { server.listen(port, resolve) })))
  const stopServers = () => Promise.all(servers.map(([s, _]) => new Promise((resolve, reject) => { s.close(resolve) })))
  return { startServers, stopServers }
}