[Bugs] "plmn-id" parameter in Nudm or so on SBI messages

[JasonKim14]

Describe the bug

Regarding the "plmn-id" parameter in Nudm or so on SBI messages, it is specified explicitly as json format. However, your AMF encodes it as plain string format. (ex. plmn-id=00101; here, MCC is "001" and "MNC is "01".)

To Reproduce

Steps to reproduce the behavior:

1. Start NRF, NSSF, AUSF, PCF and UDM Simulators over my own Tester 1.
2. Start AMF, SMF and UPF NFs of your free5GC S/W.
3. Start UE/gNB Simulator over my own Tester 2.
4. From the UE/gNB Simulator, start "Initial Registration" Test Case.
5. Monitor and check the N1/N2 and SBI messages through WireShark

Expected behavior

The "plmn-id" parameter should be encoded as like as plmn-id={"mcc"="001", "mnc"="01"}.

Environment (please complete the following information):

• free5GC Version: v.3.0.5
• OS: Ubuntu 18.04.5 LTS
• Kernel version: 5.0.0-23
• go version: go1.14.4

PCAP File

1-1_20210625144656_SBI-TestCase-Ph1.1.zip

• Log No 1265 : Nsdm-GetData (NSSAI) Header
• Log No 1300 : Nsdm-GetData (AM) Header
• Log No 1310 : Nsdm-GetData (SmfSelectData) Header
• Log No 1320 : Nsdm-GetData (UeContextInSmfData) Header

System architecture (Option)

Additional context

------TS29503_Nudm_SDM.yaml; Line#49---------------------------------

• name: plmn-id in: query description: serving PLMN ID content: application/json: schema: $ref: 'TS29571_CommonData.yaml#/components/schemas/PlmnId'

------TS29571_CommonData.yaml; Line#975---------------------------------
PlmnId: type: object properties: mcc: $ref: '#/components/schemas/Mcc' mnc: $ref: '#/components/schemas/Mnc' required:

• mcc
• mnc

[free5gc-org]

@JasonKim14

This issue was already fixed with https://github.com/free5gc/free5gc/pull/257. Please help check it.

[free5gc-org]

@JasonKim14

If no more issue, we'll close it.

[JasonKim14]

OK. Let's close this issue #221.