Wireless CarPlay iAP2 handoff mechanism
Raw Developer Origin & Technical Request
GitHub Issue
Sep 30, 2026
### DiPlay version
0.2.7
### Car and head-unit model
Head Unit / Android 12; OPPO Phone / Android 13
### iPhone model and exact iOS version
iPhone15,3; iOS 17.0
### Connection
Wireless
### What happened and how to reproduce it
@shihabal3amri I can reproduce the same issue on **DiPlay 0.2.7**, with logs showing three consecutive 45-second handoff timeouts.
**Environment**
- Receiver: OPPO PDEM10, Android 13 / API 33
- Connection: Wireless, Wi-Fi Direct, 2.4 GHz
- iPhone identifier reported in the log: `iPhone15,3`
- Exact iOS version: iOS 17.0
**Observed behavior**
Authentication succeeds and audio/video playback starts normally. After the iPhone sends `disableBluetooth`, DiPlay waits for the tunneled iAP2 connection to become ready. It never reaches that state in the captured log.
Each attempt times out almost exactly 45 seconds later:
- Attempt 1: handoff requested at 09:47:43.309; timeout at 09:48:28.306 — **44.997 seconds**.
- Attempt 2: handoff requested at 09:48:39.025; timeout at 09:49:24.022 — **44.997 seconds**.
- Attempt 3: handoff requested at 09:49:36.778; timeout at 09:50:21.789 — **45.011 seconds**.
The log consistently reports:
```text
handoffRequested=true tunnelReady=false wirelessActive=false
wireless handoff timed out waiting for tunnel iAP2 readiness
```
This is followed by the connection closing and an automatic reconnect after 2 seconds:
```text
AirPlay session ended; reconnecting from scratch
AirPlay session ended; retrying in 2000ms
ER...
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