ltm rule command UDP hold

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

UDP::hold
       Hold client ingress until UDP::release is called.

SYNOPSIS
       UDP::hold

DESCRIPTION
       Hold back processing of input packets until UDP::release is called.

       Syntax

       UDP::hold

       In certain use cases, it is desirable to delay processing of UDP input packets until after certain routing, address
       translation, or load balancing determinations have occured.  For example, certain media control protocols embed IP
       addresses in the payload, which need to be translated from public IP to private IP inbound through a firewall, and vice
       versa on the way out.

       Since this command could introduce some delay, it is advisable to enable some amount of packet buffering in the UDP
       profile.  See the Max Buffer Packets and Max Buffer Bytes settings.

       This command holds data back, so it is not compatible with other filters and event handlers that require data to make load
       balancing decisions, and could find themselves blocked waiting on data that is being held.

RETURN VALUE
VALID DURING
       CLIENT_ACCEPTED

EXAMPLES
	when CLIENT_ACCEPTED {
	    UDP::hold
	}
	when SERVER_CONNECTED {
	    UDP::release
	}

HINTS
SEE ALSO
       UDP::release

CHANGE LOG
       @BIGIP-14.1.0 --First introduced the command.

BIG-IP							    2022-04-12							  iRule(1)