Problems fixed:
- f.get() sequential collection blocked on timed-out futures in submission order
→ replaced with ExecutorCompletionService: results collected as soon as ready
- WifiManager.getConnectionInfo() deprecated on Android 10+, could return IP=0
→ replaced with NetworkInterface.getNetworkInterfaces() for subnet detection
- No real-time feedback: status stuck on 'Scanning…' throughout
→ UI updated every ~120ms showing current IP:port (n/total)
- TCP socket pre-check (600ms) before HTTP probe: filters unreachable hosts instantly
→ reduces scan time from minutes to seconds on typical /24 networks
- executor.shutdownNow() cancels remaining tasks the moment server is found
- 60-thread pool instead of 40 for faster parallel scanning
- Remove unused WifiManager import
dadaloop82
09fd122718