class Bundler::Settings::TCPSocketProbe

def replies?(mirror)
  MirrorSockets.new(mirror).any? do |socket, address, timeout|
    begin
      socket.connect_nonblock(address)
    rescue Errno::EINPROGRESS
      wait_for_writtable_socket(socket, address, timeout)
    rescue RuntimeError # Connection failed somehow, again
      false
    end
  end
end