server connect: max try 7 times

lib/core/utils/server.dart

@@ -15,7 +15,11 @@ List<SSHKeyPair> loadIndentity(String key) {
 }
 
 Future<SSHClient> genClient(ServerPrivateInfo spi) async {
-  final socket = await SSHSocket.connect(spi.ip, spi.port);
+  final socket = await SSHSocket.connect(
+    spi.ip,
+    spi.port,
+    timeout: const Duration(seconds: 5),
+  );
   if (spi.pubKeyId == null) {
     return SSHClient(
       socket,

lib/data/provider/server.dart

@@ -2,6 +2,7 @@ import 'dart:async';
 
 import 'package:flutter/foundation.dart';
 import 'package:logging/logging.dart';
+import 'package:toolbox/data/res/misc.dart';
 
 import '../../core/extension/uint8list.dart';
 import '../../core/provider_base.dart';
@@ -23,6 +24,7 @@ import '../store/setting.dart';
 class ServerProvider extends BusyProvider {
   List<Server> _servers = [];
   List<Server> get servers => _servers;
+  final _TryLimiter _limiter = _TryLimiter();
 
   Timer? _timer;
 
@@ -31,18 +33,18 @@ class ServerProvider extends BusyProvider {
   Future<void> loadLocalData() async {
     setBusyState(true);
     final infos = locator<ServerStore>().fetch();
-    _servers = List.generate(infos.length, (index) => genInfo(infos[index]));
+    _servers = List.generate(infos.length, (index) => genServer(infos[index]));
     setBusyState(false);
     notifyListeners();
   }
 
-  Server genInfo(ServerPrivateInfo spi) {
+  Server genServer(ServerPrivateInfo spi) {
     return Server(spi, initStatus, null, ServerConnectionState.disconnected);
   }
 
   Future<void> refreshData({ServerPrivateInfo? spi}) async {
     if (spi != null) {
-      _getData(spi);
+      await _getData(spi);
       return;
     }
     await Future.wait(_servers.map((s) async {
@@ -89,7 +91,7 @@ class ServerProvider extends BusyProvider {
   }
 
   void addServer(ServerPrivateInfo spi) {
-    _servers.add(genInfo(spi));
+    _servers.add(genServer(spi));
     locator<ServerStore>().put(spi);
     notifyListeners();
     refreshData(spi: spi);
@@ -122,6 +124,11 @@ class ServerProvider extends BusyProvider {
     final state = s.cs;
     if (state == ServerConnectionState.failed ||
         state == ServerConnectionState.disconnected) {
+      if (!_limiter.shouldTry(spi.id)) {
+        s.cs = ServerConnectionState.failed;
+        notifyListeners();
+        return;
+      }
       s.cs = ServerConnectionState.connecting;
       notifyListeners();
       final time1 = DateTime.now();
@@ -137,6 +144,7 @@ class ServerProvider extends BusyProvider {
         if (writeResult.isNotEmpty) {
           throw Exception(writeResult);
         }
+        _limiter.resetTryTimes(spi.id);
       } catch (e) {
         s.cs = ServerConnectionState.failed;
         s.status.failedInfo = '$e ## ';
@@ -251,3 +259,20 @@ class ServerProvider extends BusyProvider {
     return await client.run(snippet.script).string;
   }
 }
+
+class _TryLimiter {
+  final Map<String, int> _triedTimes = {};
+
+  bool shouldTry(String id) {
+    final times = _triedTimes[id] ?? 0;
+    if (times >= serverMaxTryTimes) {
+      return false;
+    }
+    _triedTimes[id] = times + 1;
+    return true;
+  }
+
+  void resetTryTimes(String id) {
+    _triedTimes[id] = 0;
+  }
+}

lib/data/res/misc.dart

@@ -0,0 +1 @@
+const serverMaxTryTimes = 7;

lib/view/page/home.dart

@@ -174,7 +174,7 @@ class _MyHomePageState extends State<MyHomePage>
             onPressed: () => showRoundDialog(
               context,
               _versionStr,
-              const Text('${BuildData.buildAt}\n\n${BuildData.engine}'),
+              const Text(BuildData.buildAt),
               [],
             ),
             child: Text(

lib/view/page/server/detail.dart

@@ -1,8 +1,8 @@
 import 'package:flutter/material.dart';
 import 'package:provider/provider.dart';
+
 import '../../../core/extension/numx.dart';
 import '../../../data/model/server/dist.dart';
-
 import '../../../data/model/server/net_speed.dart';
 import '../../../data/model/server/server.dart';
 import '../../../data/model/server/server_status.dart';

lib/view/page/server/tab.dart

@@ -162,7 +162,7 @@ class _ServerPageState extends State<ServerPage>
                       ? GestureDetector(
                           onTap: () => showRoundDialog(
                               context, _s.error, Text(ss.failedInfo ?? ''), []),
-                          child: Text(_s.clickSee, style: style))
+                          child: Text(_s.clickSee, style: style, textScaleFactor: 1.0,))
                       : Text(topRightStr, style: style, textScaleFactor: 1.0),
                   const SizedBox(width: 9),
                   _buildSSHBtn(spi),

lib/view/page/ssh.dart

@@ -27,7 +27,7 @@ class SSHPage extends StatefulWidget {
 
 class _SSHPageState extends State<SSHPage> {
   late final terminal = Terminal(inputHandler: keyboard);
-  late final SSHClient client;
+  SSHClient? client;
   final keyboard = locator<VirtualKeyboard>();
   late MediaQueryData _media;
   final _virtualKeyboardHeight = 57.0;
@@ -49,7 +49,7 @@ class _SSHPageState extends State<SSHPage> {
 
   @override
   void dispose() {
-    client.close();
+    client?.close();
     super.dispose();
   }
 
@@ -59,7 +59,7 @@ class _SSHPageState extends State<SSHPage> {
     client = await genClient(widget.spi);
     terminal.write('Connected\r\n');
 
-    final session = await client.shell(
+    final session = await client!.shell(
       pty: SSHPtyConfig(
         width: terminal.viewWidth,
         height: terminal.viewHeight,