jsWebProxy

ph.js

"use strict";
var page = require('webpage').create(),
    system = require('system'),
    t, address, timeout, count, regexp, finish;

address = system.args[1];
timeout = +(system.args[2] || 10000)
count   = system.args[3] || 1
regexp  = new RegExp(system.args[4] || '.*', 'g')
finish = new Date().getTime()+ timeout;

page.open(address, function (status) {
    setInterval(function () {
        var matches = page.evaluate(function (regexp) {
            return document.body.innerHTML.match(regexp)
        }, regexp);
        var time = new Date().getTime();
        if(time > finish || (matches && matches.length >= count)) {
            console.log(page.evaluate(function () {
                return document.body.innerHTML;
            }));
            phantom.exit();
        }
    }, 200);
});

server.js

let http = require('http')
let exec = require('exec');

let serv = http.createServer((req, res) => {
  let o = {}
  let m = req.url.match(/(\w+)\=([^\&]+)/g)
  if (!m) return req.end('bad')
  m.forEach(a => {
    a = a.split('=')
    o[a[0]] = a[1]
  })
  let args = [decodeURIComponent(o.url  || 'http://google.ru'),
    o.time || 10000,
    o.count || 1,
    decodeURIComponent(o.regexp || '.*')]

  exec(['./phantomjs', './ph.js', ...args], function(err, out, code) {
    if (err) {
      res.writeHead(500, {'Content-Type': 'text/plain'});
      res.end(err);  
    } else {
      res.writeHead(200, {'Content-Type': 'text/plain'});
      res.end(out);
    }
  });
})

serv.listen('3000')