# File lib/http-access2.rb, line 320
  def request_async(method, uri, query = nil, body = nil, extheader = {})
    conn = Connection.new
    t = Thread.new(conn) { |tconn|
      conn_request(tconn, method, uri, query, body, extheader)
    }
    conn.async_thread = t
    conn
  end