iRule Limit the number of HTTP requests by a client within a specified time

Hi Jason

Today I created one datagroup in the load balncer called

conn_limit_dg_4Request, the point of this data group with ip addresses is to have 4 request per second for each client ip address, so How can I get the 4 request per second with this iRule that I changed with the datagroup configured? will it work like this change on the iRule?

when RULE_INIT {

#This defines how long is the sliding window to count the requests. This example allows 10 requests in 1 seconds*

set static::windowSecs 1

}

when CLIENT_ACCEPTED {

#Max connections per client IP 

set limit [class match -value [IP::client_addr] equals conn_limit_dg_4Request]

log local0. "[IP::client_addr]: \$limit: $limit"

}

when HTTP_REQUEST {

#Check if client IP is in the connection limit data group and the request is a GET 

if { $limit ne "" and [HTTP::method] eq "GET"} {

set getCount [table key -count -subtable [IP::client_addr]]

log local0. "[IP::client_addr]: getCount=$getCount"

if { $getCount < $limit} {

incr getCount 1

table set -subtable [IP::client_addr] $getCount "" indefinite $static::windowSecs

} else { log local0. "[IP::client_addr]: exceeded the number of requests allowed. $getCount / $limit"

#HTTP header with connection limit exceed the count request

HTTP::respond 429 content "Too Many Requests"

}

}

}