[Bug] TC-SC-4.1 check the discriminator not correct

[lxj199722]

Describe the bug

Hello, For TC-SC-4.1, Step 4d and 4e, it requires to check the discriminator, and on default TH only recognises 3840. lf discriminator is changed, what should be set in the TH? My DUT is able to get commissioned, but when checking discriminator in Step 4d and e of TC-SC-4.1, it failed. TH Version: TH Fall2023, Sha: 3f84bff5.

Steps to reproduce the behavior

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Expected behavior

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Log files

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PICS file

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Screenshots

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Environment

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Additional Information

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[rquidute]

Hi @lxj199722 could you please attach log files and PICS file used in this scenario?

[lxj199722]

Hi @lxj199722 could you please attach log files and PICS file used in this scenario? Hi, this is dut_config information and TC-SC-4.1 log files. UI_Test_Run_TC_SC_41_2024_01_03_17_37_16.log

[rquidute]

Hi @cecille Do you have any idea what is happening?

[cecille]

This is not a problem with the TH using an incorrect value - the value appears in the test as expected, but it looks like maybe the discovery commands code is wrong.

CHIPTOOL   | 2024-01-03 09:39:20.117672 | CHIP:DIS Discovered node:
CHIPTOOL   | 2024-01-03 09:39:20.118590 | CHIP:DIS 	Hostname: 34155B5D6D20
CHIPTOOL   | 2024-01-03 09:39:20.119490 | CHIP:DIS 	IP Address #1: fe80::3629:8fff:fe1f:4215
CHIPTOOL   | 2024-01-03 09:39:20.120449 | CHIP:DIS 	Port: 5540
CHIPTOOL   | 2024-01-03 09:39:20.121358 | CHIP:DIS 	Mrp Interval idle: not present
CHIPTOOL   | 2024-01-03 09:39:20.122253 | CHIP:DIS 	Mrp Interval active: not present
CHIPTOOL   | 2024-01-03 09:39:20.123140 | CHIP:DIS 	TCP Supported: 1
CHIPTOOL   | 2024-01-03 09:39:20.124059 | CHIP:DIS 	Rotating ID: 0200F666BFA30A0701DA7E8C619E396AC578
CHIPTOOL   | 2024-01-03 09:39:20.124952 | CHIP:DIS 	Vendor ID: 4933
CHIPTOOL   | 2024-01-03 09:39:20.126646 | CHIP:DIS 	Product ID: 16897
CHIPTOOL   | 2024-01-03 09:39:20.128575 | CHIP:DIS 	Device Type: 65535
CHIPTOOL   | 2024-01-03 09:39:20.130858 | CHIP:DIS 	Long Discriminator: 1300
CHIPTOOL   | 2024-01-03 09:39:20.131856 | CHIP:DIS 	Pairing Hint: 36
CHIPTOOL   | 2024-01-03 09:39:20.132764 | CHIP:DIS 	Instance Name: 8E90FB880A9C93B2
CHIPTOOL   | 2024-01-03 09:39:20.134008 | CHIP:DIS 	Commissioning Mode: 1
CHIPTOOL   | 2024-01-03 09:39:20.134941 | CHIP:DIS Discovered node:
CHIPTOOL   | 2024-01-03 09:39:20.135856 | CHIP:DIS 	Hostname: 34155B5D6D20
CHIPTOOL   | 2024-01-03 09:39:20.136759 | CHIP:DIS 	IP Address #1: fe80::3629:8fff:fe1f:4215
CHIPTOOL   | 2024-01-03 09:39:20.137634 | CHIP:DIS 	Port: 5540
CHIPTOOL   | 2024-01-03 09:39:20.138497 | CHIP:DIS 	Mrp Interval idle: not present
CHIPTOOL   | 2024-01-03 09:39:20.139344 | CHIP:DIS 	Mrp Interval active: not present
CHIPTOOL   | 2024-01-03 09:39:20.140224 | CHIP:DIS 	TCP Supported: 1
CHIPTOOL   | 2024-01-03 09:39:20.141079 | CHIP:DIS 	Rotating ID: 0200F666BFA30A0701DA7E8C619E396AC578
CHIPTOOL   | 2024-01-03 09:39:20.141915 | CHIP:DIS 	Vendor ID: 4933
CHIPTOOL   | 2024-01-03 09:39:20.142750 | CHIP:DIS 	Product ID: 16897
CHIPTOOL   | 2024-01-03 09:39:20.143586 | CHIP:DIS 	Device Type: 65535
CHIPTOOL   | 2024-01-03 09:39:20.144478 | CHIP:DIS 	Long Discriminator: 1300
CHIPTOOL   | 2024-01-03 09:39:20.145323 | CHIP:DIS 	Pairing Hint: 36
CHIPTOOL   | 2024-01-03 09:39:20.146152 | CHIP:DIS 	Instance Name: 8E90FB880A9C93B2
CHIPTOOL   | 2024-01-03 09:39:20.146980 | CHIP:DIS 	Commissioning Mode: 1
CHIPTOOL   | 2024-01-03 09:39:20.147857 | CHIP:CTL Unknown filter type; all matches will fail
WARNING    | 2024-01-03 09:39:20.149414 | Test Failure: The test expectation "longDiscriminator == 1300" is false
INFO       | 2024-01-03 09:39:20.153149 | Test Step Completed [FAILED]: Step 2h: key D must be present and represents the discriminator which must be encoded as a variable-length decimal value with up to 4 digits omitting any leading zeros

^ longDiscriminator == 1300 indicates that the script substituted the value correctly for the check, but longDiscriminator is incorrect, despite being obviously correct.

[cecille]

I wonder if there are some weird characters in there or something. The logs indicate the discovered device is correct, and I THINK they're pulling that from the TXT. It would be good to get an additional source of truth on the TXT record. Can you run avahi-browse -r _matterc._udp while the device is up on the network and send the results?

[cecille]

This also isn't the first failure - this step fails earlier:

CHIPTOOL   | 2024-01-03 09:39:17.452486 | CHIP:TOO Command: discover find-commissionable-by-short-discriminator 15 
CHIPTOOL   | 2024-01-03 09:39:17.455221 | CHIP:DL Avahi browse: cache exhausted
CHIPTOOL   | 2024-01-03 09:39:17.456783 | CHIP:DL Avahi browse: all for now
CHIPTOOL   | 2024-01-03 09:39:17.457705 | CHIP:DL Avahi browse: cache exhausted
CHIPTOOL   | 2024-01-03 09:39:17.458576 | CHIP:DL Avahi browse: all for now
CHIPTOOL   | 2024-01-03 09:39:17.459436 | CHIP:DL Avahi browse: cache exhausted
CHIPTOOL   | 2024-01-03 09:39:17.460337 | CHIP:DL Avahi browse: all for now
CHIPTOOL   | 2024-01-03 09:39:17.461213 | CHIP:DL Avahi browse: cache exhausted
CHIPTOOL   | 2024-01-03 09:39:17.462077 | CHIP:DL Avahi browse: all for now
CHIPTOOL   | 2024-01-03 09:39:17.462929 | CHIP:DL Avahi browse: cache exhausted
CHIPTOOL   | 2024-01-03 09:39:17.463786 | CHIP:DL Avahi browse: all for now
WARNING    | 2024-01-03 09:39:17.465437 | Test Failure: The test expects no error but the "FAILURE" error occured.
INFO       | 2024-01-03 09:39:17.468608 | Test Step Completed [FAILED]: Step 2d: Check Short Discriminator (_S)

[cecille]

So if you could also run a check for avahi-browse _services._dns-sd._udp, that would narrow down the first failure.

[KyuminAhn]

I am experiencing the same problem. Is there a solution?