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Re: GATT cache clear
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Re: GATT cache clear

  • Subject: Re: GATT cache clear
  • From: Matthias Ringwald <email@hidden>
  • Date: Mon, 06 Feb 2017 19:45:54 +0100
Hi Nick

What happens if you send the service changed notification just before doing the restart?

Another idea: you could try to keep the attribute handles between updates and maybe reserve "space" between the services to allow for additional characteristics. 

Sent from my iPhone

On 6 Feb 2017, at 19:38, Nick Brook <email@hidden> wrote:

Hi,

After completing an OTA firmware update to my device, the device restarts and iOS reconnects. If the GATT attributes change in the update, reconnection sometimes fails as iOS is using a cache of the attributes from before the update. Currently our solution is asking the user to turn Bluetooth off and on – not ideal.

Is there any way to force iOS to clear this cache? I can’t use the Service Changed characteristic (0x2a05) in the Generic Attribute Service (0x1801) as the service ‘changes' when the device is disconnected.

Thanks

Nick Brook
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References: 
 >GATT cache clear (From: Nick Brook <email@hidden>)

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