proxy.js

#!/bin/env node

/**
 * A simple proxy for http request forwards.
 *
 * @author Allex Wang ([email protected])
 *
 * GistID: 5b70db879e1938ee360e
 * GistURL: https://gist.github.com/5b70db879e1938ee360e
 */

var http = require('http')
  , request = require('request')
  , padLeft = function(s, len, c) {
    s = '' + s; c = c || '0'; while (s.length < len) s = c + s;
    return s
  }
  , ts = function(date) {
    date = date || new Date()
    return [date.getFullYear(), date.getMonth() + 1, date.getDay()].join('/') + ' ' + [padLeft(date.getHours(), 2), padLeft(date.getMinutes(), 2), padLeft(date.getSeconds(), 2), padLeft(date.getUTCMilliseconds(), 3)].join(':')
  }

function log(s) {
  if (s) { arguments[0] = '[' + ts() + '] ' + s }
  console.log.apply(console, arguments)
}

function error(s) {
  log(s);
}

function main() {
  var port = 8080

  var server = http.createServer(function(req, res) {
    var url = req.url
    try {
      var r = request(url)
      r.on('end', function() {
        log('\"%s %s\"', req.method, url, r.response.statusCode)
      })
      req.pipe(r).pipe(res)
    } catch (e) {
      var msg = 'fatal: ' + e.message
      res.writeHead(500)
      res.end(msg)
      error(msg)
    }
  })

  process.title = 'http-proxy'
  process.on('uncaughtException', error)

  server.listen(port);
  log('Proxy server running on port %s.', port)
}

main()

//  vim: set fdm=marker ts=2 sw=2 sts=2 tw=85 et :