improve ui with whirlpool startup errors

src/main/java/com/sparrowwallet/sparrow/wallet/UtxosController.java

@@ -135,7 +135,13 @@ public class UtxosController extends WalletFormController implements Initializab
             Whirlpool whirlpool = AppServices.getWhirlpoolServices().getWhirlpool(getWalletForm().getWallet());
             if(whirlpool != null) {
                 stopMix.visibleProperty().bind(whirlpool.mixingProperty());
+                if(whirlpool.startingProperty().getValue()) {
+                    mixingStartingListener.changed(whirlpool.startingProperty(), null, whirlpool.startingProperty().getValue());
+                }
                 whirlpool.startingProperty().addListener(new WeakChangeListener<>(mixingStartingListener));
+                if(whirlpool.stoppingProperty().getValue()) {
+                    mixingStoppingListener.changed(whirlpool.stoppingProperty(), null, whirlpool.stoppingProperty().getValue());
+                }
                 whirlpool.stoppingProperty().addListener(new WeakChangeListener<>(mixingStoppingListener));
                 whirlpool.mixingProperty().addListener(new WeakChangeListener<>(mixingListener));
                 updateMixToButton();

src/main/java/com/sparrowwallet/sparrow/whirlpool/Whirlpool.java

@@ -373,6 +373,10 @@ public class Whirlpool {
         config.setServerApi(serverApi);
     }
 
+    public void refreshTorCircuits() {
+        torClientService.changeIdentity();
+    }
+
     public String getScode() {
         return config.getScode();
     }
@@ -578,14 +582,17 @@ public class Whirlpool {
                     updateProgress(-1, 1);
                     updateMessage("Starting Whirlpool...");
 
+                    try {
                         whirlpool.startingProperty.set(true);
                         WhirlpoolWallet whirlpoolWallet = whirlpool.getWhirlpoolWallet();
                         if(AppServices.onlineProperty().get()) {
                             whirlpoolWallet.start();
                         }
-                    whirlpool.startingProperty.set(false);
 
                         return whirlpoolWallet;
+                    } finally {
+                        whirlpool.startingProperty.set(false);
+                    }
                 }
             };
         }
@@ -604,10 +611,14 @@ public class Whirlpool {
                 protected Boolean call() throws Exception {
                     updateProgress(-1, 1);
                     updateMessage("Disconnecting from Whirlpool...");
+
+                    try {
                         whirlpool.stoppingProperty.set(true);
                         whirlpool.shutdown();
-                    whirlpool.stoppingProperty.set(false);
                         return true;
+                    } finally {
+                        whirlpool.stoppingProperty.set(false);
+                    }
                 }
             };
         }

src/main/java/com/sparrowwallet/sparrow/whirlpool/WhirlpoolServices.java

@@ -19,10 +19,12 @@ import javafx.util.Duration;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
+import java.net.SocketTimeoutException;
 import java.util.HashMap;
 import java.util.Map;
 import java.util.NoSuchElementException;
 import java.util.Objects;
+import java.util.concurrent.TimeoutException;
 import java.util.stream.Collectors;
 
 public class WhirlpoolServices {
@@ -94,6 +96,16 @@ public class WhirlpoolServices {
             });
             startupService.setOnFailed(workerStateEvent -> {
                 log.error("Failed to start whirlpool", workerStateEvent.getSource().getException());
+                Throwable exception = workerStateEvent.getSource().getException();
+                while(exception.getCause() != null) {
+                    exception = exception.getCause();
+                }
+                if(exception instanceof TimeoutException || exception instanceof SocketTimeoutException) {
+                    EventManager.get().post(new StatusEvent("Error connecting to Whirlpool server, will retry soon..."));
+                    if(torProxy != null) {
+                        whirlpool.refreshTorCircuits();
+                    }
+                }
             });
             startupService.start();
         }