Forum Discussion
souravkayal_287
Nimbostratus
NimbostratusHelp for irule
set myIpH [format %08x $myIpE]
set myIpD1 [expr 0x[substr $myIpH 6 2]]
set myIpD2 [expr 0x[substr $myIpH 4 2]]
set myIpD3 [expr 0x[substr $myIpH 2 2]]
set myIpD4 [expr 0x[substr $myIpH 0 2]]
set myIp...
cjunior
Nacreous
NacreousHi,
This script part is within a context, so I will not alter or suggest any content here.
This way, I think this code snippet is related to a cookie persistence. See:
https://support.f5.com/csp/article/K6917
So, I think this propose to do the following:
Given a cookie value: 1677787402.36895.0000
Catch IP address block
myIpE: 1677787402
Convert value to Hex
set myIpH [format %08x $myIpE]
Result: 6401010a
Catch Ip address octets
set myIpD1 [expr 0x[substr $myIpH 6 2]]
Result: 0x0a => 10
set myIpD2 [expr 0x[substr $myIpH 4 2]]
Result: 0x01 => 1
set myIpD3 [expr 0x[substr $myIpH 2 2]]
Result: 0x01 -> 1
set myIpD4 [expr 0x[substr $myIpH 0 2]]
Result: 0x64 => 100
Concat to give the server IP address
set myIpD "$myIpD1.$myIpD2.$myIpD3.$myIpD4"
Result: 10.1.1.100
Write a log on the /var/log/ltm
log local0. "Server Ip address = $myIpD"
Result: Server Ip address = 10.1.1.100
Select node and port 10.1.1.100:4244
node $myIpD 4244
Dispose variables
unset myIpE
unset myIpH
unset myIpD1
unset myIpD2
unset myIpD3
unset myIpD4
unset myIpD
unset unused
I hope it helps.
Regards.
