hello @DTS Engineer I am bumping this thread to not lose visibility. If anyone in the DTS Engineering group can help me understand my issue it would be greatly appreciated. Regards, Captadoh

[quote='869237022, DTS Engineer, /thread/808917?answerId=869237022#869237022'] reproduce this here in my office [/quote] @DTS Engineer bump

[quote='869237022, DTS Engineer, /thread/808917?answerId=869237022#869237022'] reproduce this here in my office [/quote] @DTS Engineer bump to not be forgotten

[quote='869237022, DTS Engineer, /thread/808917?answerId=869237022#869237022'] reproduce this here in my office [/quote] @DTS Engineer bumping to not lose eyes

[quote='869237022, DTS Engineer, /thread/808917?answerId=869237022#869237022'] reproduce this here in my office [/quote] @DTS Engineer bumping to not lose visibility

[quote='869237022, DTS Engineer, /thread/808917?answerId=869237022#869237022'] reproduce this here in my office [/quote] Hello @DTS Engineer - I wanted to touch base regarding this topic. I hope your holiday / break was pleasant and relaxing.

[quote='869237022, DTS Engineer, /thread/808917?answerId=869237022#869237022'] reproduce this here in my office [/quote] If possible could you use TLS 1.3 and a PKCS#12 identity?

[quote='869237022, DTS Engineer, /thread/808917?answerId=869237022#869237022'] Admittedly, that was all prior to iOS 26, so it’s possible we broke something. I’m gonna try to reproduce this here in my office, but I won’t have time to do that until after the winter break. [/quote] Thank you for taking the time to investigate this. I look forward to hearing back about what you find. Would me checking in on Jan 5th be appropriate?

[quote='869086022, DTS Engineer, /thread/808917?answerId=869086022#869086022'] Create a small test app [/quote] I created four branches on my app: ios18_network_api_tcp ios18_network_api_quic ios26_network_api_tcp ios26_network_api_quic I have three physical devices to test with: iPad (Device A - iOS 26 - no cellular) iPhone (Device B - iOS 26 - no cellular) iPhone (Device C - iOS 26 - yes cellular) For each branch listed above I tested two scenarios: home Wi-Fi network ON home Wi-Fi network OFF (I physically turned off the router) Note that on each device the Wi-Fi toggle is ON. Results from each branch for home Wi-Fi ON: Devices A, B and C can all discovery and connect to each other Results from each branch for home Wi-Fi OFF: Devices A and B can discovery and connect to each other Device C is not able to discovery or connect to the other devices

I’m not sure why you think cellular is a factor here. It is not. Peer-to-peer Wi-Fi is independent of cellular. I think this because things work (ie multiple devices are able to discover and connect to each other when no wifi network is available) only for devices without cellular. If i load the exact same app onto devices with cellular and try the same thing they are not able to discovery and connect to each other.

[quote='869086022, DTS Engineer, /thread/808917?answerId=869086022#869086022'] Create a small test app that uses [/quote] Are you open to me inviting you to a private Github repo?

The answer to this is no. Cursor said so and I tried everything I and Cursor could think of and nothing worked.

[quote='867322022, DTS Engineer, /thread/808198?answerId=867322022#867322022'] Can you share an example crash report? [/quote] my app was crashing because I was improperly saving the stream I would create like this try await connection.inboundStreams(prepending: { quicStream in TLV { quicStream } }) { stream in await self.receiveMessages(from: stream, connectionID: connectionID) } I learned via Cursor that those streams are one time use and do not need to be saved.

Hi Quinn @DTS Engineer I am curious if my post is missing any information needed to troubleshoot my issue. I searched through the forums and online and haven't found my specific issue anywhere. The more I think about it I come to the following: true peer to peer with no wifi network works with iOS devices without cellular (so AWDL is used) once cellular is introduced there needs to be a wifi network because using AWDL is not an option Maybe some kind of option can be passed into the NetworkListener or when creating a NetworkConnection that would prompt apple's code to try to use AWDL if the peer to peer option is true? [quote='867952022, DTS Engineer, /thread/808917?answerId=867952022#867952022'] Share and Enjoy [/quote]

Bumping to not lose visibility.