_readme.md

Usage

node index.js <source server> <destination server> [optional cookie string]

cors-proxy accepts HTTP requests and proxies them to the destination server as though they originated from the source server. This allows you to, for example, develop locally and make CORS requests against a production or staging server.

index.js

var http   = require('http')
  , https  = require('follow-redirects').https
  , url    = require('url')
  , _      = require('underscore')

var from   = process.argv[2]
  , to     = process.argv[3]
  , cookie = process.argv[4]

function usage() {
  console.log("USAGE: node index.js from_url to_url [optional cookie string]");
  console.log("Example:");
  console.log("    node index.js https://community.fullscreen.net https://engine.fullscreen.net");
  process.exit(0)
}

if (process.argv.length < 4) { usage() }

http.createServer(function(req, res) {
  var parsed = url.parse(req.url)
    , destOrigin = req.headers.origin
    , options = {
        hostname: url.parse(to).hostname,
        port: 443,
        path: parsed.path,
        method: req.method,
        headers: _.extend({}, req.headers, {
          host: url.parse(from).hostname,
          origin: from,
          cookie: (cookie ? cookie : req.headers.cookie)
        })
      }

  https.request(options, function(proxiedRes) {
    res.writeHead(proxiedRes.statusCode, _.extend({}, proxiedRes.headers, {
      'access-control-allow-origin': destOrigin
    }))
    proxiedRes.pipe(res)
  }).end()

}).listen(8080, function() {
  console.log('listening on port 8080')
})

process.on('error', function(err) {
  console.log(err)
})

package.json

{
  "name": "cors-proxy",
  "version": "0.0.0",
  "description": "Proxies requests from one server to another, inserting false `Origin` and `Accept-Origin` headers",
  "main": "index.js",
  "author": "Paul Sweeney <paul@8-bitdesign.com>",
  "license": "MIT",
  "dependencies": {
    "follow-redirects": "0.0.3",
    "underscore": "^1.6.0"
  }
}