Pub/sub with Redis [Node.js and node_redis]

server.js

var http = require('http');
var url = require('url');
var redis_lib = require("redis");

http.createServer(function (req, res) {
  var query = url.parse(req.url, true).query;
  var redis1 = redis_lib.createClient();
  var redis2 = redis_lib.createClient();
  
  res.writeHead(200, {'Content-Type': 'text/html; charset=utf-8'});
  
  redis2.on("subscribe", function (channel, count) {
    redis1.publish("echo", query.message || "");
  });
  
  redis2.on("message", function(channel, message) {
    redis2.unsubscribe();
    redis2.end();
    redis1.end();
    res.end(message);
  });
  
  redis2.subscribe("echo");
}).listen(80);