Context: [https://discussions.unity.com/t/unity-relay-netcode-for-gameobjects-ghost-disconnect-when-app-is-put-in-background-for-1-minute/1699269]{}{{}}{}{{}}

Steps to reproduce:

1. Start a minimal session: 1 host and 1 client using Netcode for GameObjects with Unity Transport and Relay via SetRelayServerData
2. Configure Disconnect Timeout to 5 minutes
3. On Android, background the host (or client) app for ~1 minute
4. Return to the app before the 5-minute timeout elapses
5. Notice that no disconnect or transport failure callbacks; peers stop seeing each other’s actions. and host eventually gets disconnect only after timeout

Actual results: 

• No disconnect or OnTransportFailure callback fired after ~1 minute background
• Session becomes desynced
• Host only gets a disconnect after the full 5-minute timeout

Expected results: 

if the OS or Relay causes a transport failure in the background, NetworkManager.OnTransportFailure should be invoked

Reproducible with versions: 

• Platform: Android
• Network: Unity Transport with Relay configured via SetRelayServerData
• Netcode for GameObjects: 2.7.0

Transport: 2.6.0

• Editor: 6.3

Not reproducible with versions: 

Can’t test with versions: 

Tested on (OS): 

Notes:
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