# File lib/cool.io/listener.rb, line 39
    def on_readable
      begin
        on_connection @listen_socket.accept_nonblock
      rescue Errno::EAGAIN, Errno::ECONNABORTED
        # EAGAIN can be triggered here if the socket is shared between
        # multiple processes and a thundering herd is woken up to accept
        # one connection, only one process will get the connection and
        # the others will be awoken.
        # ECONNABORTED is documented in accept() manpages but modern TCP
        # stacks with syncookies and/or accept()-filtering for DoS
        # protection do not see it.  In any case this error is harmless
        # and we should instead spend our time with clients that follow
        # through on connection attempts.
      end
    end