Facing issue while pairing custom board to the mobile application

asked 2020-09-14 12:01:22 +0000

updated 2020-09-14 12:14:07 +0000

grahamb gravatar image


We are working on a produce based on APQ8016E and WCN3660B WiFi chip.

Issue description: The pairing process includes:

  • Connection to the Wi-Fi network
  • Connection to the server and mobile application
  • The fail happens in the second phase, during server connection.

The server connection process is constructed from few HTTPS requests that mostly fail on timeout.

Additional notes for the issue: Normally it takes 1-2 seconds to this command to finish and when it got stuck, it finishes after 30-60 seconds It happens only with specific routers. We reproduce it constantly with Galaxy Note 10 and Pocophone f1 hotspots In Israel it looks like 50% of the routers provided by ISPs have this issue.

We have uploaded all the tcpdump logs and analysis report on the below link, please go through it and suggest what can we do to resolve this? link: (https://nam04.safelinks.protection.ou...)

Collected tcpdump logs for below scenarios:

  • Pairing failed with POCO phone, error #4 observed
  • Pairing failed with POCO phone, error #5 observed
  • Pairing successful with POCO phone
  • Pairing successful with Samsung M31 phone

Regards, Parth Y Shah

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Any update?

ParthShah gravatar imageParthShah ( 2020-09-17 13:21:52 +0000 )edit

As this isn't really a Wireshark or network question, more about specific device and application behaviour maybe you should seek support in the appropriate place for vendors of those devices.

Note that the traffic of interest to you appears to be encrypted TLS, so even if someone were interested, they would need access to the plain text traffic and that might be difficult to achieve (on purpose).

grahamb gravatar imagegrahamb ( 2020-09-17 13:52:24 +0000 )edit

Hi @grahamb, for your reply. Have you gone through the logs?

ParthShah gravatar imageParthShah ( 2020-09-17 14:10:49 +0000 )edit

Only to glance at. I don't know anything about these devices or what you're trying to do.

grahamb gravatar imagegrahamb ( 2020-09-17 14:41:42 +0000 )edit

Are you allowed to make a packet capture on the server(s)?

Have you looked at doing a tcpdump on the hotspot(s) to observe the connection to the server?

Chuckc gravatar imageChuckc ( 2020-09-17 16:14:42 +0000 )edit