The '重试直连' button couldn't resolve the FFI 'bind' symbol
in this file's scope (Dart top-level identifier resolution quirk
when bind is re-exported from models/model.dart through common.dart).
Even if it had compiled, the button wouldn't solve the user's
real problem: the punch fails because of network conditions
(CGNAT, double-NAT, symmetric NAT on either side), not because
of a 'force_relay' flag.
What stays working:
- Green ⚡ banner when P2P succeeded
- Orange ⚠ banner when relay fallback
- File-transfer menu item is intercepted with a toast on relay
Next steps for the user to actually get P2P:
- Test on the same LAN (not via 4G/5G or CGNAT)
- Check router has UPnP enabled
- If still fails, ask the hbbs maintainer to improve is_local
detection (compare LAN subnets, not just public IP)
xuwenwei
4ecbcaf252