return copy(connectionSpecIndex = i, isTlsFallback = (connectionSpecIndex != -1))
      }
    }
    return null
  }

  /** Returns the connection to use, which might be different from [connection]. */
  override fun handleSuccess(): RealConnection {
    user.updateRouteDatabaseAfterSuccess(route)

    val connection = this.connection!!
    user.connectionConnectEnd(connection, route)