target.loggerOnce(context.Background(), err, target.ID().String())
		}
		return err
	}

	if target.natsConn != nil && args.JetStream.Enable {
		var jstream nats.JetStream
		jstream, err = target.natsConn.JetStream()
		if err != nil {
			if err.Error() != nats.ErrNoServers.Error() {
				target.loggerOnce(context.Background(), err, target.ID().String())
			}
			return err
		}

			Description: "client cert key for NATS mTLS auth",
			Optional:    true,
			Type:        "string",
			Sensitive:   true,
		},
		config.HelpKV{
			Key:         target.NATSJetStream,
			Description: "enable JetStream support",
			Optional:    true,
			Type:        "on|off",
		},
		config.HelpKV{
			Key:         target.NATSQueueDir,
			Description: queueDirComment,
			Optional:    true,
			Type:        "path",

			PingInterval:    pingInterval,
			QueueDir:        env.Get(queueDirEnv, kv.Get(target.NATSQueueDir)),
			QueueLimit:      queueLimit,
			RootCAs:         rootCAs,
		}
		natsArgs.JetStream.Enable = env.Get(jetStreamEnableEnv, kv.Get(target.NATSJetStream)) == config.EnableOn

		streamingEnableEnv := target.EnvNATSStreaming
		if k != config.Default {

:""},{"key":"token","value":""},{"key":"tls","value":"off"},{"key":"tls_skip_verify","value":"off"},{"key":"cert_authority","value":""},{"key":"client_cert","value":""},{"key":"client_key","value":""},{"key":"ping_interval","value":"0"},{"key":"jetstream","value":"off"},{"key":"streaming","value":"off"},{"key":"streaming_async","value":"off"},{"key":"streaming_max_pub_acks_in_flight","value":"0"},{"key":"streaming_cluster_id","value":""},{"key":"queue_dir","value":""},{"key":"queue_limit","value...

        }
      }
    }
  }

  /**
   * Returns the number of [open streams][Http2Stream.isOpen] on this connection.
   */
  fun openStreamCount(): Int = this.withLock { streams.size }

  fun getStream(id: Int): Http2Stream? = this.withLock { streams[id] }

  internal fun removeStream(streamId: Int): Http2Stream? {
    this.withLock {
      val stream = streams.remove(streamId)