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Taut_SRISOMCHAI's avatar
Taut_SRISOMCHAI
Icon for Employee rankEmployee
Oct 05, 2022

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...
devops
diameter
irule
  • Nat_Thirasuttakorn's avatar
    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)

Taut_SRISOMCHAI's avatar
Taut_SRISOMCHAI
Icon for Employee rankEmployee

Hi JRahm,

Thanks for your kindly feedback.

Finally i can get those data from PS-info avp by getting the child avp from the grouped first then refer its as the new stream by source command.  Thanks alot for your hint!..  

i have another question for the Subsriber-ID (443) where this avp grouped is presented 2 times for the DATA-TYPE = IMSI(1) and E164(0) when i read the grouped is same 443 i always get only E164 but i expected the data with the IMSI type (1) then i want the avp 444 string in this grouped.  If anyone can hint or suggest will be very very appreciated.

Best regards,

Taut S

when DIAMETER_INGRESS {
if { [DIAMETER::command] == 272 } {
log local0. "Codes all I: [DIAMETER::avp codes]"
set psinfo [DIAMETER::avp data get 873 grouped]
set ps874 [DIAMETER::avp data get 874 grouped source $psinfo ]
set charging_char [DIAMETER::avp data get 13 string source $ps874 ]
set 3gppimsi [DIAMETER::avp data get 1 string source $ps874 ]
log local0. "Session ID: [DIAMETER::session]"
log local0. "Found PSinfo codes count([DIAMETER::avp count source $app_spec_avp]) AVPs within PS-Info AVP"
log local0. "Codes under PSinfo 873: [DIAMETER::avp codes source $app_spec_avp ]"
log local0. "User: [DIAMETER::avp data get 1 string]"
log local0. "CC: $charging_char , IMSI: $3gppimsi"
}
}

Nat_Thirasuttakorn's avatar
Nat_Thirasuttakorn
Icon for Employee rankEmployee
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)

  • Taut_SRISOMCHAI's avatar
    Taut_SRISOMCHAI
    Icon for Employee rankEmployee
    Nov 02, 2022

    Thanks P'Nat, it works! The index is exactly the solution.

    Here is my code from your suggestion.

    ###P'NAT HINT####

    set count [DIAMETER::avp count 443 ]
    set index 0
    set myavp ""
    while { $index < $count } {
              set parent [DIAMETER::avp data get 443 grouped index $index]
             # <avp1Name>
             log local0. "Inx: $index"
             log local0. "Codes Parent: [DIAMETER::avp codes source $parent ]"
             set child [DIAMETER::avp data get 450 integer32 source $parent]
            if { $child == "1" } {
            # <avp0Name>
            set myavp [DIAMETER::avp data get 444 string source $parent]
            log local0. "imsi: $myavp"
            break
            }
            incr index
       }

    Then i got what i want already, Thanks alot for your kindly help krab.

    Nov  3 00:15:03 ip-10-1-1-4 info tmm1[11849]: Rule /Common/test_gy_1 <DIAMETER_INGRESS>: Inx: 0
    Nov  3 00:15:03 ip-10-1-1-4 info tmm1[11849]: Rule /Common/test_gy_1 <DIAMETER_INGRESS>: Codes Parent: 1400 450
    Nov  3 00:15:03 ip-10-1-1-4 info tmm1[11849]: Rule /Common/test_gy_1 <DIAMETER_INGRESS>: Inx: 1
    Nov  3 00:15:03 ip-10-1-1-4 info tmm1[11849]: Rule /Common/test_gy_1 <DIAMETER_INGRESS>: Codes Parent: 450 444
    Nov  3 00:15:03 ip-10-1-1-4 info tmm1[11849]: Rule /Common/test_gy_1 <DIAMETER_INGRESS>: imsi: 4162796100