}
	}()
	// handlerErr is guarded by 'send' channel.
	handlerErr = handler.Handle(ctx, msg.Payload, handlerIn, send)
	return handlerErr
}

// checkRemoteAlive will check if the remote is alive.
func (m *muxServer) checkRemoteAlive() {
	t := time.NewTicker(m.clientPingInterval)
	defer t.Stop()
	for {
		select {
		case <-m.ctx.Done():
			return
		case <-t.C:

    /**
     * Sets the interval between HTTP/2 and web socket pings initiated by this client. Use this to
     * automatically send ping frames until either the connection fails or it is closed. This keeps
     * the connection alive and may detect connectivity failures.
     *
     * If the server does not respond to each ping with a pong within `interval`, this client will

			Description: "set the quality of service priority, defaults to '0'",
			Optional:    true,
			Type:        "number",
		},
		config.HelpKV{
			Key:         target.MqttKeepAliveInterval,
			Description: "keep-alive interval for MQTT connections in s,m,h,d",
			Optional:    true,
			Type:        "duration",
		},
		config.HelpKV{
			Key:         target.MqttReconnectInterval,

username             (string)    MQTT username
password             (string)    MQTT password
qos                  (number)    set the quality of service priority, defaults to '0'
keep_alive_interval  (duration)  keep-alive interval for MQTT connections in s,m,h,d
reconnect_interval   (duration)  reconnect interval for MQTT connections in s,m,h,d
queue_dir            (path)      staging dir for undelivered messages e.g. '/home/events'

  /** The HTTP {@code Location} header field name. */
  public static final String LOCATION = "Location";

  /**
   * The HTTP {@code Keep-Alive} header field name.
   *
   * @since 31.0
   */
  public static final String KEEP_ALIVE = "Keep-Alive";

  /**
   * The HTTP <a href="https://github.com/WICG/nav-speculation/blob/main/no-vary-search.md">{@code
   * No-Vary-Seearch}</a> header field name.
   *

	// return 503 server closed error, consider it as an offline node
	case strings.Contains(err.Error(), http.ErrServerClosed.Error()):
		return true
	// Corner case, the server closed the connection with a keep-alive timeout
	// some requests are not retried internally, such as POST request with written body
	case strings.Contains(err.Error(), "server closed idle connection"):
		return true
	}

	return false
}

		Hidden: true,
	},

	cli.DurationFlag{
		Name:   "idle-timeout",
		Value:  xhttp.DefaultIdleTimeout,
		Usage:  "idle timeout is the maximum amount of time to wait for the next request when keep-alive are enabled",
		EnvVar: "MINIO_IDLE_TIMEOUT",
		Hidden: true,
	},
	cli.DurationFlag{
		Name:   "read-header-timeout",
		Value:  xhttp.DefaultReadHeaderTimeout,

  When the procession came opposite to Alice, they all stopped
and looked at her, and the Queen said severely `Who is this?'
She said it to the Knave of Hearts, who only bowed and smiled in reply.

  `Idiot!' said the Queen, tossing her head impatiently; and,
turning to Alice, she went on, `What's your name, child?'

  `My name is Alice, so please your Majesty,' said Alice very

    assertThat(connect.headers["User-Agent"]).isEqualTo(USER_AGENT)
    assertThat(connect.headers["Host"]).isEqualTo("android.com:443")
    assertThat(connect.headers["Proxy-Connection"]).isEqualTo("Keep-Alive")
    val get = server.takeRequest()
    assertThat(get.headers["Private"]).isEqualTo("Secret")
    assertThat(hostnameVerifier.calls).isEqualTo(listOf("verify android.com"))
  }

  @Test

    Applications should avoid creating many connection pools as doing so
    prevents connection reuse. Each connection pool holds its own set of
    connections alive so applications that have many pools also risk exhausting
    memory!

    The best practice in OkHttp 3 is to create a single OkHttpClient instance