Illustration of bug https://github.com/igrigorik/em-http-request/issues/204

client.rb

require "em-http-request"

EM.run {
  http = EM::HttpRequest.new("http://localhost:1234/file.gz").get
  http.errback { EM.stop }
  http.callback { EM.stop }
}

server.rb

require "webrick"

# Create a random file and gzip it

if !File.exists?("file.gz")
  File.open("file", "w") do |f|
    10_000.times do |i|
      f.write(rand)
    end
  end
  `gzip file`
end


# Start a webserver serving static files

class FileHandler < WEBrick::HTTPServlet::FileHandler
  def do_GET(req, res)
    super
    res["Content-Encoding"] = "gzip"
  end
end

server = WEBrick::HTTPServer.new :Port => 1234
server.mount "/", FileHandler , "./"
trap("INT") { server.stop }
server.start