From: GOTOU Yuuzou <gotoyuzo@...>
Date: 2004-11-30T08:12:35+09:00
Subject: Re: [WEBrick] streaming output

In message <812ABBE6-4255-11D9-AF7F-00039357B54C@3skel.com>,
 `Dan Janowski <danj@3skel.com>' wrote:
> Is there a way to send a stream of output while processing, I want to 
> send ongoing status? The basic response construct seems to want the 
> output in a finalized form. The clients will render progressively from 
> what I understand.

Set an IO to res.body, and write data from another thread.

require "webrick"

class Streamlet < WEBrick::HTTPServlet::AbstractServlet
  def do_GET(req, res)
    res["content-type"] = "application/octet-stream"
    r, w = IO.pipe
    res.body = r
    Thread.start{
      10.times{|i|
        w.write("#{i}" * 4096)
        sleep(1)
      }
      w.close
    }
  end
end

httpd = WEBrick::HTTPServer.new(:Port=>10080)
httpd.mount("/", Streamlet)
trap(:INT){ httpd.shutdown }
httpd.start

-- 
gotoyuzo