Stream READING?

[Сергей Жуматий]

  Hello!
  I need to read continuously large real-time data. I don't want to send each piece of data with single POST, I want to open a connection and read all events while they happened.
  How can I do this with Sinatra? It ried this:

post '/mystream' do
  stream(:keep_open) do |input|
    input.each_line do |line|
      warn "Got: #{line}"
     end
  end
end

But it didn't work at all.