pollDataServer.js

require("./client-side/js/underscore");
var fu = require("./lib/fu"),
    sys = require('sys'),
    spawn = require("child_process").spawn
    lpb = require("./lib/longpollingbuffer"),
    url = require("url");

HOST = null; // localhost
PORT = 8070;
INTERFACE = "en1"

fu.listen(PORT, HOST);
var rb = new lpb.LongPollingBuffer(70);
var tcpdump = spawn("tcpdump", ["-i", INTERFACE, "-A", "-n", "port", "80"]);
var ignorelist = ['localhost', 'foxnews.com'];

//Setup the listener to handle the flow of data from the tcpdump
tcpdump.stdout.on('data', function (data) {
  var hosts = (new String(data)).match(/Host: (.*)/g);
  if(hosts){
    _.each(hosts, function(item){
      var out = item.slice(6);
      sys.puts(out);
      if(!_.detect(ignorelist, function(s){ return (item.indexOf(s) > -1); })){
        rb.push(out);
      }
    });
  }
});


//Setup the updater page for long polling  
fu.get("/update", function (req, res) {
  res.sendHeader(200,{"Content-Type": "text/html"});
  var thesince;
  if(url.parse(req.url,true).hasOwnProperty('query') && url.parse(req.url,true).query.hasOwnProperty('since')){
    thesince = parseInt(url.parse(req.url,true)['query']['since']);
  }
  else {
    thesince = -1;
  }
  rb.addListenerForUpdateSince(thesince, function(data){
    var body = '['+_.map(data,JSON.stringify).join(',\n')+']';
    res.write( body );
    res.close();
  });
});

// Static Files
fu.get("/", fu.staticHandler("./client-side/index.html"));
fu.get("/css/site.css", fu.staticHandler("./client-side/css/site.css"));
fu.get("/js/underscore.js", fu.staticHandler("./client-side/js/underscore.js"));
fu.get("/js/site.js", fu.staticHandler("./client-side/js/site.js"));

//images
fu.get("/images/about-current.png", fu.staticHandler("./client-side/images/about-current.png"));
fu.get("/images/blank-favicon.png", fu.staticHandler("./client-side/images/blank-favicon.png"));
fu.get("/images/current-back.png", fu.staticHandler("./client-side/images/current-back.png"));
fu.get("/images/download-source-roll.png", fu.staticHandler("./client-side/images/download-source-roll.png"));
fu.get("/images/download-source.png", fu.staticHandler("./client-side/images/download-source.png"));
fu.get("/images/get-current.png", fu.staticHandler("./client-side/images/get-current.png"));
fu.get("/images/logo.png", fu.staticHandler("./client-side/images/logo.png"));
fu.get("/images/medium-labs.png", fu.staticHandler("./client-side/images/medium-labs.png"));
fu.get("/images/node-js-roll.png", fu.staticHandler("./client-side/images/node-js-roll.png"));
fu.get("/images/node-js.png", fu.staticHandler("./client-side/images/node-js.png"));
fu.get("/images/pause.png", fu.staticHandler("./client-side/images/pause.png"));
fu.get("/images/play.png", fu.staticHandler("./client-side/images/play.png"));
fu.get("/favicon.ico", fu.staticHandler("./client-side/images/favicon.ico"));