Forum Discussion

Employee

Oct 05, 2022

Solved

Gy Diameter irule example

Dear experts, I am studying the Gy diameter MRF to make a routing based on the IMSI and 3GPP-Charging-Characteristics but those are under the AVP grouped. Can anyone please suggest how can i extr...

Nat_Thirasuttakorn

Oct 12, 2022

try something like below.

replace parent with subscription-id

replace avp1 with subscription-id-type, avp1 value would be either 0 or 1 (set to match what you are looking for)

replace avp2 with subscription-id-data

vendor-id is optional, you can remove them or set to 0

# <parentAvpName>
set count [DIAMETER::avp count <parentAvpCode> vendor-id <parentAvpVendorId>]
set index 0
set myavp ""
while { $index < $count } {
    set parent [DIAMETER::avp data get <parentAvpCode> grouped vendor-id <parentAvpVendorId> index $index]
    # <avp1Name>
    set child [DIAMETER::avp data get <avp1Code> <avp1Format> vendor-id <avp1VendorId> source $parent]
    if { $child == "<avp1ValueId>" } {
        # <avp0Name>
        set myavp [DIAMETER::avp data get <avp0Code> <avp0Format> vendor-id <avp0VendorId> source $parent]
        break
    }
    incr index
}

note that you can generate this from diameter wizard (or diameter iAppsLX)

JRahm

Admin

Oct 10, 2022

I have never dealt with this, looks like you have to use DIAMETER::avp command to get the group data, then the info within that list that is returned? Maybe something like this (but be warned, I don't know DIAMETER at all)

when DIAMETER_EGRESS {
  if {[DIAMETER::command] == 272} {
    set charging_char [DIAMETER::avp data get 874 "3GPP-Charging-Characteristics"]
    set charging_id [DIAMETER::avp data get 874 "3GPP-Charging-Id"]
    set imsi [DIAMETER::avp data get 874 "3GPP-IMSI"]
  }
  log local0. "Details: $charging_char, $charging_id, $imsi"
}

if that bears no fruit, you can try the 873 code first with the "PS-Information" in place of what's there, or just log the entire message with the DIAMETER::message command and start to pick that apart to figure out the right combination of parent/child AVP codes. This is what I think is relevant.