override fun equals(other: Any?): Boolean {
    return other is Address &&
      url == other.url &&
      equalsNonHost(other)
  }

  override fun hashCode(): Int {
    var result = 17
    result = 31 * result + url.hashCode()
    result = 31 * result + dns.hashCode()
    result = 31 * result + proxyAuthenticator.hashCode()
    result = 31 * result + protocols.hashCode()