http-proxy-middleware proxy by path, including websockets

proxy_ws_by_path.js

const express = require('express')
const proxy = require('http-proxy-middleware')

const app = express()

app.use('/xxx', proxy('/xxx', {
  target: 'http://localhost:8443',
  changeOrigin: true,
  ws: true,
  pathRewrite: {
    '^/xxx': ''
  }
}))
app.use('/yyy', proxy('/yyy', {
  target: 'http://localhost:9443',
  changeOrigin: true,
  ws: true,
  pathRewrite: {
    '^/yyy': ''
  }
}))

app.listen(3000)