ltm rule command MQTT protocol version

iRule(1)					  BIG-IP TMSH Manual					     iRule(1)

MQTT::protocol_version
       Get or set protocol revision level of MQTT CONNECT message

SYNOPSIS
       MQTT::protocol_version (VERSION)?

DESCRIPTION
       This command can be used to get or set protocol revision level of MQTT message.	This command is valid only
       for following MQTT message types:

	   CONNECT

       Syntax

       MQTT::protocol_version [  ]

       MQTT::protocol_version
	   * Get the protocol revision level of MQTT CONNECT message.

       MQTT::protocol_version 
	   * Set the protocol revision level of MQTT CONNECT message.
	     To set to MQTT 3.1.1 specify 4. (MQTT::protocol_version 4).
	     To set to MQTT 3.1 specify 3. (MQTT::protocol_version 3).

RETURN VALUE
       When called without an argument, this command returns the protocol revision of MQTT CONNECT message

VALID DURING
       MQTT_CLIENT_INGRESS MQTT_SERVER_INGRESS MQTT_CLIENT_DATA MQTT_SERVER_DATA MQTT_CLIENT_EGRESS
       MQTT_SERVER_EGRESS

EXAMPLES
	# Upgrade protocol from 3.1 to 3.1.1
	when MQTT_CLIENT_INGRESS {
	   set type [MQTT::type]
	   switch $type {
	       "CONNECT" {
		  if {[MQTT::protocol_version] == 3 } {
		     MQTT::protocol_version 4
		     MQTT::protocol_name "MQTT"
		  }
	       }
	   }
	}

HINTS
SEE ALSO
CHANGE LOG
       @BIGIP-13.0.0 --First introduced the command.

BIG-IP						      2020-06-23					     iRule(1)