HTTPS 反代本地开发环境，避免线上后端 CORS

server.js

// Step 1: 修改 /etc/hosts，把 CORS 合法域名指向本机
// Step 2: 当前目录准备该域名的证书 tls.crt
// Step 3: 当前目录准备该域名的证书 tls.key
// Step 4: 修改 TARGET 为本地开发环境的 URL
// Step 5: node server.js

var http = require('http'), https = require('https'), fs = require('fs')

var TARGET = 'http://localhost:8080'
var PORT = 443

var server = https.createServer({
  cert: fs.readFileSync('tls.crt'),
  key: fs.readFileSync('tls.key'),
})

server.on('request', function(req, rsp) {
  var url = TARGET + req.url
  var proxy = http.request(url, function(response) {
    for (var key in response.headers) {
      rsp.setHeader(key, response.headers[key])  
    }
    response
      .on('data', function (chunk) { rsp.write(chunk) })
      .on('end', function () { rsp.end() })
  })
  proxy.once('error', function (e) {
    console.error(e.toString())
    rsp.writeHead(500).end()
  })
  // if client close response unexpectedly
  rsp.on('close', function () { proxy.destroy()})
  req.pipe(proxy)
})

server.listen(PORT)