[Zigpy-Integration] - Unable to pair some end devices due to Verify -> Confirm Key not on time

[pipiche38]

This problem is duplicated with 2 Owow/Casaia end devices PIR323/CMS323 and CTHS317. From Owon, the end device give 5 seconds to the CIE to send its Confirm Key otherwise the device will leave the network

Here after are 2 Sniffs, 1 failing and 1 successful where we see the Confirm Key is coming in the 3 seconds. CTHS317ET-pairing-failed-zzh.pcapng.zip CTHS317ET-pairing-failed-zzh Success.pcapng.zip

Here is a failure with a CMS CMS323-Pairing-Failing-on-Sonoff.pcapng.zip

Issue reported

• Zigpy https://github.com/zigpy/zigpy-znp/issues/149
• Z-Stack firmware https://github.com/Koenkk/Z-Stack-firmware/issues/365

[pipiche38]

adding 6 seconds of sleeping after having sent the first commands ( End Point Descriptor), make it works.

Even if it is not a best practice from the manufacturer, this problem doesn't exist on Zigate !