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Abed_AL-R's avatar
Abed_AL-R
Icon for Cirrostratus rankCirrostratus
Mar 13, 2021

table incr timeout

Hi

Is there any way to create the 'table incr' entry without timeout

according to f5 documentation it will have timeout of 180 seconds

is there any other syntax i can use instead of it to not have the 180 seconds timeout?

This is part of the iRule I'm using:

set srcip [IP::remote_addr]  
if { [ASM::violation count] > 0 } {
  set getCount [table incr $key]
    if { $getCount< $static::maxRate } {
      incr getCount 1
    } else {
    table delete $key
}

If there was no traffic for 3 minutes then the $key variable will be timeout, and the 'getCount' variable will be reset

application delivery
BIG-IP
iRules

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  • Abed_AL-R's avatar
    Abed_AL-R
    Icon for Cirrostratus rankCirrostratus
    Mar 13, 2021

    OK, solved

    I used this syntax:

    set srcip [IP::remote_addr]
set curtime [clock second]
set hash $curtime
set key "count:$srcip:$hash"
 
if { [ASM::violation count] > 0 } {
        table add -subtable "countvio" $key "inserted" indef
        set getCount [table keys -subtable "countvio" -count]
	    if { $getCount< $static::maxRate } {
		    incr getCount 1
	    } else {
	        table delete -all -subtable "countvio"
}}

    So the stategy was to create a subtable and insert a new unique key value (used current time seconds for that). And then counted the values in the subtable.