Issue #296: MtApi5 - Added property CommandTimeout to define time for waiting result of response from MetaTrader. Default value 30 sec

MtApi5/MtApi5Client.cs

@@ -32,11 +32,24 @@ namespace MtApi5
         
         private HashSet<int> _experts = [];
         private Dictionary<int, Mt5Quote> _quotes = [];
+        private volatile int _command_timeout = 30000; // 30 seconds
         #endregion
 
         #region Public Methods
         private IMtLogger Log { get; }
 
+        // Time in milliseconds to wait for a response from MetaTrader for a command. Default is 30 seconds.
+        public int CommandTimeout
+        {
+            get => _command_timeout;
+            set
+            {
+                if (value <= 0)
+                    throw new ArgumentException("Command timeout must be greater than zero.");
+                _command_timeout = value;
+            }
+        }
+
         public MtApi5Client(IMtLogger? log = null)
         {
             _mtEventHandlers[Mt5EventTypes.OnBookEvent] = ReceivedOnBookEvent;
@@ -3588,7 +3601,7 @@ namespace MtApi5
             var payloadJson = payload == null ? string.Empty : JsonConvert.SerializeObject(payload);
             Log.Debug($"SendCommand: sending '{payloadJson}' ...");
 
-            var responseJson = client.SendCommand(expertHandle, (int)commandType, payloadJson);
+            var responseJson = client.SendCommand(expertHandle, (int)commandType, payloadJson, CommandTimeout);
 
             Log.Debug($"SendCommand: received response JSON [{responseJson}]");
 

MtClient/MtRpcClient.cs

@@ -65,7 +65,7 @@ namespace MtClient
             logger_.Debug($"MtRpcClient.Disconnect: success");
         }
 
-        public string? SendCommand(int expertHandle, int commandType, string payload)
+        public string? SendCommand(int expertHandle, int commandType, string payload, int timeout = 10000)  // 10 sec
         {
             CommandTask<string> commandTask = new();
             int commandId;
@@ -78,7 +78,7 @@ namespace MtClient
             MtCommand command = new(expertHandle, commandType, commandId, payload);
             Send(command);
 
-            var response = commandTask.WaitResponse(10000); // 10 sec
+            var response = commandTask.WaitResponse(timeout);
             lock (tasks_)
             {
                 tasks_.Remove(commandId);

TestClients/MtApi5TestClient/MainWindow.xaml

@@ -167,6 +167,7 @@
                             <RowDefinition Height="Auto"/>
                             <RowDefinition Height="*"/>
                             <RowDefinition Height="Auto"/>
+                            <RowDefinition Height="Auto"/>
                         </Grid.RowDefinitions>
                         <Label Grid.Row="0" Content="Quotes" Background="LightYellow" />
                         <ListView Grid.Row="1" Margin="2"
@@ -183,6 +184,11 @@
                             </ListView.View>
                         </ListView>
                         <Button Grid.Row="2" Content="Refresh Quotes" Margin="2"  Command="{Binding RefreshQuotesCommand}"/>
+                        <StackPanel Grid.Row="3" Orientation="Horizontal" HorizontalAlignment="Left" Margin="2">
+                            <TextBlock Text="Command timeout (ms):" VerticalAlignment="Center" Margin="2"/>
+                            <TextBox Text="{Binding CommandTimeout}" Width="100" Margin="2"/>
+                            <Button Content="Apply" Margin="2" Command="{Binding TimeoutApplyCommand}"/>
+                        </StackPanel>
                     </Grid>
                 </Border>
             </Grid>

TestClients/MtApi5TestClient/ViewModel.cs

@@ -163,6 +163,8 @@ namespace MtApi5TestClient
 
         public DelegateCommand GetSymbolsCommand { get; private set; }
         public DelegateCommand RefreshQuotesCommand { get; private set; }
+
+        public DelegateCommand TimeoutApplyCommand { get; private set; }
         #endregion
 
         #region Properties
@@ -210,6 +212,17 @@ namespace MtApi5TestClient
             }
         }
 
+        private int _command_timeout;
+        public int CommandTimeout
+        {
+            get { return _command_timeout; }
+            set
+            {
+                _command_timeout = value;
+                OnPropertyChanged("CommandTimeout");
+            }
+        }
+
         public ObservableCollection<QuoteViewModel> Quotes { get; } = new ObservableCollection<QuoteViewModel>();
 
         private QuoteViewModel _selectedQuote;
@@ -350,6 +363,7 @@ namespace MtApi5TestClient
             ConnectionState = _mtApiClient.ConnectionState;
             ConnectionMessage = "Disconnected";
             Port = 8228; //default local port
+            CommandTimeout = _mtApiClient.CommandTimeout;
 
             InitCommands();
 
@@ -494,6 +508,8 @@ namespace MtApi5TestClient
 
             GetSymbolsCommand = new DelegateCommand(ExecuteGetSymbols);
             RefreshQuotesCommand = new DelegateCommand(ExecuteRefreshQuotes);
+
+            TimeoutApplyCommand = new DelegateCommand(ExecuteTimeoutApply);
         }
 
         private bool CanExecuteConnect(object o)
@@ -1773,6 +1789,12 @@ namespace MtApi5TestClient
             }
         }
 
+        private void ExecuteTimeoutApply(object o)
+        {
+            _mtApiClient.CommandTimeout = CommandTimeout;
+            AddLog($"TimeoutApply: timeout = {CommandTimeout} milliseconds");
+        }
+
         private static void RunOnUiThread(Action action)
         {
             Application.Current?.Dispatcher.Invoke(action);