Unable to Decode Matter IM Traffic in Wireshark using nRF52840-DK as Thread Sniffer
I have developed a Matter-over-Thread light bulb using the Silicon Labs EFR32MG24 platform, with CHIP_CONFIG_SECURITY_TEST_MODE = 1 enabled. In parallel, I have set up an OpenThread Border Router (OTBR) on a Raspberry Pi and retrieved the Thread network key. I also built the Matter Wireshark dissector (version 3.6.25) and am using an nRF52840-DK as a Thread sniffer. While I have successfully configured Wireshark for Thread packet decoding and reviewed the reference Matter captures, I am still unable to observe any Interaction Model (IM) traffic in Wireshark. This includes, but is not limited to: • Command requests and responses • Attribute read and write operations • Subscriptions • Events • Cluster-level communication • User Directed Commissioning (UDC) • On/Off cluster interactions Despite verifying the Thread configuration and keys, the IM messages are not being decoded or displayed. For additional context, both the OTBR and chip-tool are built and running in security test mode. I enabled the CHIP_CONFIG_SECURITY_TEST_MODE = 1 flag and built chip-tool using the following command, as specified in config/python/CHIPProjectConfig.h: gn gen out/debug --args='treat_warnings_as_errors=false'
I would appreciate your guidance on the correct procedure to capture and decode Matter Interaction Model messages in Wireshark.
if any config images required pls feel free to ping me [email protected]