gistfile1.rb

def request(req, body = nil, &block)  # :yield: +response+
  unless started?
    start {
      req['connection'] ||= 'close'
      return request(req, body, &block)
    }
  end
  if proxy_user()
    unless use_ssl?
      req.proxy_basic_auth proxy_user(), proxy_pass()
    end
  end
  # set body
  req.set_body_internal body
  begin_transport req
    # if we expect 100-continue then send a header first
    send_only = ((req.is_a?(Post)||req.is_a?(Put)) && (req['expect']=='100-continue')) ? :header : nil
    req.exec @socket, @curr_http_version, edit_path(req.path), send_only
    begin
      res = HTTPResponse.read_new(@socket)
      # if we expected 100-continue then send a body
      if res.is_a?(HTTPContinue) && send_only && req['content-length'].to_i > 0
        req.exec @socket, @curr_http_version, edit_path(req.path), :body
      end
    end while res.kind_of?(HTTPContinue)
    res.reading_body(@socket, req.response_body_permitted?) {
      yield res if block_given?
    }
  end_transport req, res
  res
end