lan_scanner 4.0.0+1

Dart / Flutter package that allows discovering network devices via multi-threaded ICMP pings.

example/lib/main.dart

import 'package:dart_ping_ios/dart_ping_ios.dart';
import 'package:flutter/material.dart';
import 'package:lan_scanner/lan_scanner.dart';
import 'package:network_info_plus/network_info_plus.dart';

void main() {
  DartPingIOS.register();

  runApp(const MyApp());
}

class MyApp extends StatelessWidget {
  const MyApp({Key? key}) : super(key: key);

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'lan_scanner example',
      theme: ThemeData(useMaterial3: true),
      home: const MyHomePage(),
    );
  }
}

class MyHomePage extends StatefulWidget {
  const MyHomePage({Key? key}) : super(key: key);

  @override
  State<MyHomePage> createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  final List<Host> _hosts = <Host>[];

  double? progress = 0.0;

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: const Text('lan_scanner example'),
      ),
      body: SafeArea(
        child: SingleChildScrollView(
          child: Column(
            children: [
              LinearProgressIndicator(value: progress),
              const SizedBox(height: 8),
              Wrap(
                spacing: 8,
                children: [
                  FilledButton(
                    onPressed: () async {
                      setState(() {
                        progress = 0.0;
                        _hosts.clear();
                      });

                      final scanner = LanScanner(debugLogging: true);
                      final stream = scanner.icmpScan(
                        ipToCSubnet(await NetworkInfo().getWifiIP() ?? ''),
                        scanThreads: 20,
                        progressCallback: (newProgress) {
                          setState(() {
                            progress = newProgress;
                          });
                        },
                      );

                      stream.listen((Host host) {
                        setState(() {
                          _hosts.add(host);
                        });
                      });
                    },
                    child: const Text('Scan'),
                  ),
                  FilledButton(
                    onPressed: () async {
                      setState(() {
                        progress = null;
                        _hosts.clear();
                      });

                      final scanner = LanScanner(debugLogging: true);
                      final hosts = await scanner.quickIcmpScanSync(
                        ipToCSubnet(await NetworkInfo().getWifiIP() ?? ''),
                      );

                      setState(() {
                        _hosts.addAll(hosts);
                        progress = 1.0;
                      });
                    },
                    child: const Text('Quick scan sync'),
                  ),
                  FilledButton(
                    onPressed: () async {
                      setState(() {
                        progress = null;
                        _hosts.clear();
                      });

                      final scanner = LanScanner(debugLogging: true);
                      final hosts = await scanner.quickIcmpScanAsync(
                        ipToCSubnet(await NetworkInfo().getWifiIP() ?? ''),
                      );

                      setState(() {
                        _hosts.addAll(hosts);
                        progress = 1.0;
                      });
                    },
                    child: const Text('Quick scan async'),
                  ),
                ],
              ),
              const SizedBox(height: 8),
              ListView.builder(
                physics: const NeverScrollableScrollPhysics(),
                shrinkWrap: true,
                itemCount: _hosts.length,
                itemBuilder: (context, index) {
                  final host = _hosts[index];
                  final address = host.internetAddress.address;
                  final time = host.pingTime;

                  return Card(
                    child: ListTile(
                      title: Text(address),
                      trailing: Text(time != null ? time.toString() : 'N/A'),
                    ),
                  );
                },
              ),
            ],
          ),
        ),
      ),
    );
  }
}