[BUG] [Android] Hysteria2 connection stalls working after device sleep or idle period

[noideastowork]

操作系统/Operating System

Android

(Samsung S24 Ultra, OneUI 6.1)

系统版本/Operating System Version

14

App版本/App Version

1.2.18.2102

描述/Describeption

The Hysteria2 protocol stops transmitting data after the phone has been in sleep mode (or left idle) for some time. The exact duration is inconsistent. The connection becomes unresponsive and does not recover automatically upon waking the device.

复现步骤/Reproduction steps

1. Connect to a server with Hysteria2 protocol.
2. Verify that the internet connection is working.
3. Lock the phone and leave it in sleep mode/idle for an extended period (e.g., 3–60 minutes).
4. Wake the device and try to use the internet.

Observed result: The connection is dead/stalled. It stays broken until the ping is tapped or the VPN is toggled (off and on again).

Expected result: The connection should remain active or automatically reconnect upon waking the device, similar to how VLESS behaves with Karing.

日志/Log

[noideastowork]

After some testing, I noticed that the connection eventually re-establishes, but the reconnection taking roughly 20-30 seconds (no such problem using VLESS)

[GooRingX]

Please provide the 'Net Check' results and the service_core.log file corresponding to the time this issue occurred.