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SC::MRPStandAloneAck No valid exchange found #354

@cooperrunyan

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@cooperrunyan

I am using rs-matter-embassy with wifi on the esp32-c6, and connecting it to Apple Home. Right now it's just running a dummy on-off light and logging the state changes. Commissioning seems to work fine, as I can connect it with my phone and watch the logs.

For the most part, everything works as expected, however after a little while of inactivity (around 5-ish minutes), the Home app says "no response" and I get the following message in the logs:

WARN - Got status response InvalidSubscription, aborting interaction
WARN -
>>RCV UDP [...]:51298 [SID:2,CTR:46778ce][A,EID:13,PROTO:0,OP:10,ACTR:7f9dda4]
      SC::MRPStandAloneAck
      => No valid exchange found, dropping
WARN -
>>RCV UDP [...]:51298 [SID:2,CTR:46778cf][A,EID:13,PROTO:0,OP:10,ACTR:7f9dda4]
      SC::MRPStandAloneAck
      => No valid exchange found, dropping
WARN -
>>RCV UDP [...]:51298 [SID:2,CTR:46778d0][A,EID:13,PROTO:0,OP:10,ACTR:7f9dda4]
      SC::MRPStandAloneAck
      => No valid exchange found, dropping

I can still use the app to toggle the state, which makes the device appear to be working again, however the same thing happens 5-ish minutes later.

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