ATT data truncated

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#85 2 comments 0 reactions 0 assignees View on GitHub

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Assessment

Difficulty
4/5
Estimated time
3-5 days
Newbie friendliness
25/100
Issue type
Bug
Clarity
Needs clarification
Activity status
Stale
Tech stack
csharp

Research direction

Start with the attached etl.zip and inspect the HCI output extracted with BTETLParse.exe while comparing the behavior seen in BTVS. Trace where ATT notification data becomes truncated during WPR capture; done means identifying the responsible stage and confirming that complete ATT packets are preserved in the resulting HCI log.

Written by the indexing model from the issue text.

Description

Issue:
On this PC, all ATT notifications received by the host are truncated when capturing Bluetooth HCI logs via WPR.

Notes:

  • this is not an Ellisys import issue because we can already see in the .hci file directly extracted from the .etl file using BTETLParse.exe that the data is already truncated.
  • this does not seem to be a BTETLParse.exe issue because, if running BTVS we see the same issue
  • this is not an issue with the data being sent: the HID reports in those notifications are well received and interpreted by Windows, so, those ATT packets are complete (we should be able to see that in the air.btt log but here there was an Ellisys sniffer issue)

Let me know if you need additional logs or information.
etl.zip

Dominant language
C#
Stars
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Forks
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PR merge metrics
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