openvpn_flutter 1.0.0+1

Connect OpenVPN service with Flutter

example/lib/main.dart

import 'package:flutter/material.dart';
import 'dart:async';

import 'package:openvpn_flutter/openvpn_flutter.dart';

void main() {
  runApp(const MyApp());
}

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

  @override
  State<MyApp> createState() => _MyAppState();
}

class _MyAppState extends State<MyApp> {
  late OpenVPN engine;
  VpnStatus? status;
  VPNStage? stage;
  @override
  void initState() {
    engine = OpenVPN(
      onVpnStatusChanged: (data) {
        setState(() {
          status = data;
        });
      },
      onVpnStageChanged: (data) {
        setState(() {
          stage = data;
        });
      },
    );
    engine.initialize(
        groupIdentifier: "group.com.laskarmedia.vpn",
        providerBundleIdentifier:
            "id.laskarmedia.openvpnFlutterExample.VPNExtension",
        localizedDescription: "VPN by Nizwar");
    super.initState();
  }

  Future<void> initPlatformState() async {
    engine.connect(config, "USA",
        username: defaultVpnUsername, password: defaultVpnPassword);
    if (!mounted) return;
  }

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: const Text('Plugin example app'),
        ),
        body: Center(
          child: Column(
            mainAxisSize: MainAxisSize.min,
            children: [
              Text(stage?.name ?? VPNStage.disconnected.name),
              Text(status?.toJson().toString() ?? ""),
              TextButton(
                child: const Text("Start"),
                onPressed: () {
                  initPlatformState();
                },
              ),
              TextButton(
                child: const Text("STOP"),
                onPressed: () {
                  engine.disconnect();
                },
              ),
            ],
          ),
        ),
      ),
    );
  }
}

const String defaultVpnUsername = "";
const String defaultVpnPassword = "";

String config = """
dev tun
proto udp
remote public-vpn-209.opengw.net 1195
;http-proxy-retry
;http-proxy [proxy server] [proxy port]
cipher AES-128-CBC
auth SHA1
resolv-retry infinite
nobind
persist-key
persist-tun
client
verb 3
#auth-user-pass
<ca>
-----BEGIN CERTIFICATE-----
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jjxDah2nGN59PRbxYvnKkKj9
-----END CERTIFICATE-----
</ca>

<cert>
-----BEGIN CERTIFICATE-----
MIICxjCCAa4CAQAwDQYJKoZIhvcNAQEFBQAwKTEaMBgGA1UEAxMRVlBOR2F0ZUNs
aWVudENlcnQxCzAJBgNVBAYTAkpQMB4XDTEzMDIxMTAzNDk0OVoXDTM3MDExOTAz
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-----END CERTIFICATE-----
</cert>

<key>
-----BEGIN RSA PRIVATE KEY-----
MIIEpAIBAAKCAQEA5h2lgQQYUjwoKYJbzVZA5VcIGd5otPc/qZRMt0KItCFA0s9R
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M7muBbF0XN7VO80iJPv+PmIZdEIAkpwKfi201YB+BafCIuGxIF50Vg==
-----END RSA PRIVATE KEY-----
</key>
""";