Buffering in WEBrick

[Bill Atkins]

I'm writing a web application with WEBrick that occasionally has to
send large streams of data to the browser. However, WEBrick seems to
be storing all of the content and then sending it to the user all at
once. Is there any way I could periodically flush WEBrick's output so
the user doesn't have to stare at a blank screen while the server is
working?

Bill Atkins

 

[GOTOU Yuuzou]

Hi, sorry for late reply.

I'm writing a web application with WEBrick that occasionally has to
send large streams of data to the browser. However, WEBrick seems to
be storing all of the content and then sending it to the user all at
once. Is there any way I could periodically flush WEBrick's output so
the user doesn't have to stare at a blank screen while the server is
working?

If the body of response is IO, its output will be flushed
with every reading of 4096 bytes chunk.

require "webrick"

class Streamlet < WEBrick::HTTPServlet::AbstractServlet
def do_GET(req, res)
res["content-type"] = "text/plain"
reader, writer = IO.pipe
Thread.start{
10000.times{|i|
puts i
writer << "a" * 1000
writer << "\n"
}
writer.close
}
res.body = reader
end
end

httpd = WEBrick::HTTPServer.newPort=>10080)
httpd.mount("/", Streamlet)
trapINT){ httpd.shutdown }
httpd.start

regards,