ltm rule command TCP local port

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

TCP::local_port
       Returns the local port of a TCP connection.

SYNOPSIS
       TCP::local_port (clientside | serverside)?

DESCRIPTION
       Returns the local port/service number of the specified side, or the current context (client or server) if
       there is no argument.  This command is equivalent to the BIG-IP 4.X variable local_port. When used in a
       clientside context, this command returns the client-side TCP destination port. When used in a serverside
       context, this command returns the server-side TCP source port.

       Syntax

       TCP::local_port [ clientside | serverside ]

       TCP::local_port

	    * Returns the local TCP port/service number of the current context's
	      TCP connection.

       TCP::local_port clientside

	    * Returns the local TCP port/service number of the client-side TCP
	      connection.

       TCP::local_port serverside

	    * Returns the local TCP port/service number of the server-side TCP
	      connection.

RETURN VALUE
       The local port.

VALID DURING
       CLIENT_ACCEPTED, CLIENT_CLOSED, CLIENT_DATA, SERVER_INIT, SERVER_CLOSED, SERVER_CONNECTED, SERVER_DATA,
       SIP_REQUEST, SIP_REQUEST_SEND, SIP_RESPONSE, STREAM_MATCHED

EXAMPLES
	when SERVER_CONNECTED {
	  # This logs information about the TCP connections on *both* sides of the fullproxy
	  set client_remote "[IP::client_addr]:[TCP::client_port]"
	  set client_local  "[IP::local_addr clientside]:[TCP::local_port clientside]"
	  set server_local  "[IP::local_addr]:[TCP::local_port]"
	  set server_remote "[IP::server_addr]:[TCP::server_port]"
	  log local0. "Got connection: Client($client_remote)<->($client_local)LTM($server_local)<->($server_remote)Server"
	}

	Example output:

	: Got connection: Client(10.3.3.20:33798)<->(10.3.3.111:80)LTM(10.1.1.110:33798)<->(10.1.1.200:80)Server

HINTS
SEE ALSO
       UDP::local_port

CHANGE LOG
       @BIGIP-9.0.0 --First introduced the command.  @BIGIP-9.3.0 --Fixed for FastL4

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