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https://issues.apache.org/jira/browse/MYNEWT-857?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16309173#comment-16309173
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Lance Cohen edited comment on MYNEWT-857 at 1/3/18 5:22 AM:
------------------------------------------------------------
Hi all,
An update on our testing regarding this issue:
- We've been able to replicate the issue with the bleprph example & commenting
ble_ll_ctrl_proc_start() using iPhone X.
- Have not managed to get a packet trace yet to capture the issue but we found
this discussion from someone who had captured a problematic connection via
Wireshark: https://forums.developer.apple.com/thread/94365 - how does the
NimBle stack respond when device doesnt send the MTU Request?
was (Author: lance_proxy):
Hi all,
An update on our testing regarding this issue:
- We've been able to replicate the issue with the bleprph example & commenting
ble_ll_ctrl_proc_start() using iPhone X.
- Have not managed to get a packet trace yet to capture the issue but we found
this discussion from someone who had captured a problematic connection via
Wireshark: https://forums.developer.apple.com/thread/94365 - how does the
NimBle stack respond when device doesnt send the MTU Request
> BLE Controller - incompatibility with iPhone 8 (and iPhone X?)
> --------------------------------------------------------------
>
> Key: MYNEWT-857
> URL: https://issues.apache.org/jira/browse/MYNEWT-857
> Project: Mynewt
> Issue Type: Task
> Security Level: Public(Viewable by anyone)
> Components: Nimble
> Reporter: Christopher Collins
> Fix For: v1.3
>
> Attachments: ios2nimble-no-feat.pcap, ios2nimble.pcap,
> nimble_ios_1033.btt, nimble_ios_1103.btt
>
>
> Master: iPhone running iOS 11
> Slave: NimBLE device
> The iPhone successfully establishes a connection to the NimBLE device, but
> the CoreBluetooth {{didConnect()}} callback does not get called. A packet
> trace (see attached {{ios2nimble.pcap}} file) shows that the iPhone never
> initiates service discovery.
> The problem seems to occur when the NimBLE controller initiates the Feature
> Exchange Procedure immediately after connection establishment. The
> {{LL_SLAVE_FEATURE_REQ}} PDU appears to cause a problem for the iOS device.
> When I comment out the call to {{ble_ll_ctrl_proc_start()}} at the bottom of
> {{ble_ll_conn_created()}}, the iOS device is able to connect and perform
> service discovery, resulting in the CoreBluetooth callback being executed.
> In the attached pcap file {{ios2nimble.pcap}}, the CONNECT_REQ is at packet
> #6211.
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