val rawSocket = this.rawSocket!!
    val socket = this.socket!!
    val source = this.source!!
    if (rawSocket.isClosed || socket.isClosed || socket.isInputShutdown ||
      socket.isOutputShutdown
    ) {
      return false
    }

    val http2Connection = this.http2Connection
    if (http2Connection != null) {
      return http2Connection.isHealthy(nowNs)
    }