streamingclient.rb

require 'em-http'

EventMachine.run {
  http = EM::HttpRequest.new("http://127.0.0.1:8000/").get
  puts 'starting...'
  buffer = ""
  http.stream do |chunk|
    buffer += chunk
    while line = buffer.slice!(/.+\r?\n/)
      puts line
    end
    puts '...'
  end
}

textstreaming.js

// Text streaming using node.js and http streaming

// Original source is from http://blog.new-bamboo.co.uk/2009/12/7/real-time-online-activity-monitor-example-with-node-js-and-websocket
var sys = require('sys')
var filename = process.ARGV[2];

if (!filename)
  return sys.puts("Usage: node textstreaming.js filename");

var spawn = require('child_process').spawn;
var tail = spawn("tail", ["-f", filename]);
sys.puts("start tailing");

tail.stdout.on('data', function (data) {
    sys.puts(data);
    });

var http = require("http");
http.createServer(function(req,res){
    res.writeHead(200,{"Content-Type": "text/plain"});
    tail.stdout.on('data', function (data) {
      res.write(data);
      });  
    }).listen(8000, "127.0.0.1");
console.log("Server running at http://127.0.0.1")