various updates and fixes

build.gradle

@@ -124,8 +124,8 @@ dependencies {
         exclude group: 'org.slf4j'
     }
     implementation('com.sparrowwallet.bokmakierie:bokmakierie:1.0')
-    implementation('io.samourai.code.whirlpool:whirlpool-client:1.0.0-beta10')
+    implementation('io.samourai.code.whirlpool:whirlpool-client:1.0.0-beta13')
-    implementation('io.samourai.code.wallet:java-http-client:2.0.0-beta3')
+    implementation('io.samourai.code.wallet:java-http-client:2.0.0-beta4')
     implementation('io.reactivex.rxjava2:rxjava:2.2.15')
     implementation('io.reactivex.rxjava2:rxjavafx:2.2.2')
     implementation('org.apache.commons:commons-lang3:3.7')
@@ -490,7 +490,6 @@ extraJavaModuleInfo {
         exports('co.nstant.in.cbor.model')
         exports('co.nstant.in.cbor.builder')
     }
-    // begin samourai dependencies
     module('commons-codec-1.10.jar', 'commons.codec', '1.10') {
         exports('org.apache.commons.codec')
     }
@@ -507,7 +506,6 @@ extraJavaModuleInfo {
         exports('com.lambdaworks.codec')
         exports('com.lambdaworks.crypto')
     }
-    // end samourai dependencies
     module('okio-1.6.0.jar', 'com.squareup.okio', '1.6.0') {
         exports('okio')
     }

drongo

@@ -1 +1 @@
-Subproject commit c8165e154a4088262cdf9428f8f8a6ef95db5140
+Subproject commit 3b8435ca37d00d370d859fa9dbc1631d3cdcae45

src/main/java/com/sparrowwallet/sparrow/control/MixStatusCell.java

@@ -70,7 +70,7 @@ public class MixStatusCell extends TreeTableCell<Entry, UtxoEntry.MixStatus> {
     }
 
     private void setMixFail(MixFailReason mixFailReason, String mixError, Long mixErrorTimestamp) {
-        if(mixFailReason != MixFailReason.CANCEL) {
+        if(mixFailReason != MixFailReason.STOP_UTXO && !mixFailReason.isSilent()) {
             long elapsed = mixErrorTimestamp == null ? 0L : System.currentTimeMillis() - mixErrorTimestamp;
             if(elapsed >= ERROR_DISPLAY_MILLIS) {
                 //Old error, don't set again.
@@ -116,24 +116,10 @@ public class MixStatusCell extends TreeTableCell<Entry, UtxoEntry.MixStatus> {
             progressIndicator.setProgress(mixProgress.getMixStep().getProgressPercent() == 100 ? -1 : mixProgress.getMixStep().getProgressPercent() / 100.0);
             setGraphic(progressIndicator);
             Tooltip tt = new Tooltip();
-            String status = mixProgress.getMixStep().getMessage().substring(0, 1).toUpperCase(Locale.ROOT) + mixProgress.getMixStep().getMessage().substring(1);
+            String status = mixProgress.getMixStep().getMessage().replaceAll("_", " ");
+            status = status.substring(0, 1).toUpperCase(Locale.ROOT) + status.substring(1).toLowerCase(Locale.ROOT);
             tt.setText(status);
             setTooltip(tt);
-
-            // TODO nbRegisteredInputs is not available anymore
-            /*
-            if(mixProgress.getMixStep() == MixStep.REGISTERED_INPUT) {
-                tt.setOnShowing(event -> {
-                    Whirlpool whirlpool = AppServices.getWhirlpoolServices().getWhirlpool(utxoEntry.getWallet());
-                    Whirlpool.RegisteredInputsService registeredInputsService = new Whirlpool.RegisteredInputsService(whirlpool, mixProgress.getPoolId());
-                    registeredInputsService.setOnSucceeded(eventStateHandler -> {
-                        if(registeredInputsService.getValue() != null) {
-                            tt.setText(status + " (1 of " + registeredInputsService.getValue() + ")");
-                        }
-                    });
-                    registeredInputsService.start();
-                });
-            }*/
         } else {
             setGraphic(null);
             setTooltip(null);

src/main/java/com/sparrowwallet/sparrow/io/db/DbPersistence.java

@@ -256,8 +256,11 @@ public class DbPersistence implements Persistence {
                     }
                     for(Sha256Hash txid : referencedTxIds) {
                         BlockTransaction blkTx = wallet.getTransactions().get(txid);
+                        //May be null for a nested wallet if still updating
+                        if(blkTx != null) {
                             blockTransactionDao.addOrUpdate(wallet, txid, blkTx);
                         }
+                    }
                     if(!dirtyPersistables.clearHistory) {
                         DetachedLabelDao detachedLabelDao = handle.attach(DetachedLabelDao.class);
                         detachedLabelDao.clearAndAddAll(wallet);

src/main/java/com/sparrowwallet/sparrow/net/BroadcastSource.java

@@ -1,7 +1,7 @@
 package com.sparrowwallet.sparrow.net;
 
 import com.google.common.net.HostAndPort;
-import com.samourai.wallet.api.backend.beans.HttpException;
+import com.samourai.wallet.httpClient.HttpResponseException;
 import com.sparrowwallet.drongo.Network;
 import com.sparrowwallet.drongo.Utils;
 import com.sparrowwallet.drongo.protocol.Sha256Hash;
@@ -158,7 +158,7 @@ public enum BroadcastSource {
             } catch(Exception e) {
                 throw new BroadcastException("Could not retrieve txid from broadcast, server returned: " + response);
             }
-        } catch(HttpException e) {
+        } catch(HttpResponseException e) {
             throw new BroadcastException("Could not broadcast transaction, server returned " + e.getStatusCode() + ": " + e.getResponseBody());
         } catch(Exception e) {
             log.error("Could not post transaction via " + getName(), e);

src/main/java/com/sparrowwallet/sparrow/net/ExchangeSource.java

@@ -1,6 +1,6 @@
 package com.sparrowwallet.sparrow.net;
 
-import com.samourai.wallet.api.backend.beans.HttpException;
+import com.samourai.wallet.httpClient.HttpResponseException;
 import com.sparrowwallet.sparrow.AppServices;
 import com.sparrowwallet.sparrow.event.ExchangeRatesUpdatedEvent;
 import javafx.concurrent.ScheduledService;
@@ -107,7 +107,7 @@ public enum ExchangeSource {
                     if(log.isDebugEnabled()) {
                         log.warn("Error retrieving historical currency rates", e);
                     } else {
-                        if(e instanceof HttpException httpException && httpException.getStatusCode() == 404) {
+                        if(e instanceof HttpResponseException httpException && httpException.getStatusCode() == 404) {
                             log.warn("Error retrieving historical currency rates (" + e.getMessage() + "). BTC-" + currency.getCurrencyCode() + " may not be supported by " + this);
                         } else {
                             log.warn("Error retrieving historical currency rates (" + e.getMessage() + ")");

src/main/java/com/sparrowwallet/sparrow/net/HttpClientService.java

@@ -5,6 +5,7 @@ import com.samourai.http.client.JettyHttpClientService;
 import com.samourai.wallet.httpClient.HttpUsage;
 import com.samourai.wallet.httpClient.IHttpClient;
 import com.samourai.wallet.util.AsyncUtil;
+import com.samourai.wallet.util.ThreadUtil;
 import com.samourai.whirlpool.client.utils.ClientUtils;
 import io.reactivex.Observable;
 import javafx.concurrent.Service;
@@ -17,25 +18,20 @@ public class HttpClientService extends JettyHttpClientService {
     private static final int REQUEST_TIMEOUT = 120000;
 
     public HttpClientService(HostAndPort torProxy) {
-        super(REQUEST_TIMEOUT,
+        super(REQUEST_TIMEOUT, ClientUtils.USER_AGENT, new HttpProxySupplier(torProxy));
-                ClientUtils.USER_AGENT,
-                new HttpProxySupplier(torProxy));
     }
 
     public <T> T requestJson(String url, Class<T> responseType, Map<String, String> headers) throws Exception {
-        return getHttpClient(HttpUsage.BACKEND)
+        return getHttpClient(HttpUsage.BACKEND).getJson(url, responseType, headers);
-                .getJson(url, responseType, headers);
     }
 
     public <T> Observable<Optional<T>> postJson(String url, Class<T> responseType, Map<String, String> headers, Object body) {
-        return getHttpClient(HttpUsage.BACKEND)
+        return getHttpClient(HttpUsage.BACKEND).postJson(url, responseType, headers, body).toObservable();
-                .postJson(url, responseType, headers, body).toObservable();
     }
 
     public String postString(String url, Map<String, String> headers, String contentType, String content) throws Exception {
         IHttpClient httpClient = getHttpClient(HttpUsage.BACKEND);
-        return AsyncUtil.getInstance().blockingGet(
+        return AsyncUtil.getInstance().blockingGet(httpClient.postString(url, headers, contentType, content)).get();
-                httpClient.postString(url, headers, contentType, content)).get();
     }
 
     public HostAndPort getTorProxy() {
@@ -64,6 +60,7 @@ public class HttpClientService extends JettyHttpClientService {
         protected Task<Boolean> createTask() {
             return new Task<>() {
                 protected Boolean call() throws Exception {
+                    ThreadUtil.getInstance().getExecutorService().shutdown();
                     httpClientService.stop();
                     return true;
                 }

src/main/java/com/sparrowwallet/sparrow/net/HttpProxySupplier.java

@@ -21,7 +21,7 @@ public class HttpProxySupplier implements IHttpProxySupplier {
         if (hostAndPort == null) {
             return null;
         }
-        // TODO verify
+
         return new HttpProxy(HttpProxyProtocol.SOCKS, hostAndPort.getHost(), hostAndPort.getPort());
     }
 

src/main/java/com/sparrowwallet/sparrow/payjoin/Payjoin.java

@@ -2,7 +2,7 @@ package com.sparrowwallet.sparrow.payjoin;
 
 import com.google.common.collect.ImmutableMap;
 import com.google.gson.Gson;
-import com.samourai.wallet.api.backend.beans.HttpException;
+import com.samourai.wallet.httpClient.HttpResponseException;
 import com.sparrowwallet.drongo.protocol.Script;
 import com.sparrowwallet.drongo.protocol.Transaction;
 import com.sparrowwallet.drongo.protocol.TransactionInput;
@@ -87,7 +87,7 @@ public class Payjoin {
             checkProposal(psbt, proposalPsbt, changeOutputIndex, maxAdditionalFeeContribution, allowOutputSubstitution);
 
             return proposalPsbt;
-        } catch(HttpException e) {
+        } catch(HttpResponseException e) {
             Gson gson = new Gson();
             PayjoinReceiverError payjoinReceiverError = gson.fromJson(e.getResponseBody(), PayjoinReceiverError.class);
             log.warn("Payjoin receiver returned an error of " + payjoinReceiverError.getErrorCode() + " (" + payjoinReceiverError.getMessage() + ")");

src/main/java/com/sparrowwallet/sparrow/soroban/CounterpartyController.java

@@ -25,6 +25,8 @@ import javafx.application.Platform;
 import javafx.beans.property.ObjectProperty;
 import javafx.beans.property.SimpleObjectProperty;
 import javafx.collections.FXCollections;
+import javafx.concurrent.Service;
+import javafx.concurrent.Task;
 import javafx.event.ActionEvent;
 import javafx.fxml.FXML;
 import javafx.scene.control.*;
@@ -238,10 +240,19 @@ public class CounterpartyController extends SorobanController {
         SorobanWalletCounterparty sorobanWalletCounterparty = sorobanWalletService.getSorobanWalletCounterparty(cahootsWallet);
         sorobanWalletCounterparty.setTimeoutMeetingMs(TIMEOUT_MS);
 
-        try {
+        Service<SorobanRequestMessage> receiveMeetingService = new Service<>() {
-            // TODO run in background thread?
+            @Override
-            SorobanRequestMessage requestMessage = sorobanWalletCounterparty.receiveMeetingRequest();
+            protected Task<SorobanRequestMessage> createTask() {
-
+                return new Task<>() {
+                    @Override
+                    protected SorobanRequestMessage call() throws Exception {
+                        return sorobanWalletCounterparty.receiveMeetingRequest();
+                    }
+                };
+            }
+        };
+        receiveMeetingService.setOnSucceeded(event -> {
+            SorobanRequestMessage requestMessage = receiveMeetingService.getValue();
             PaymentCode paymentCodeInitiator = requestMessage.getSender();
             CahootsType cahootsType = requestMessage.getType();
             updateMixPartner(paymentCodeInitiator, cahootsType);
@@ -261,11 +272,14 @@ public class CounterpartyController extends SorobanController {
                         mixingPartner.setVisible(false);
                         requestUserAttention();
                     });
-        } catch(Exception e) {
+        });
+        receiveMeetingService.setOnFailed(event -> {
+            Throwable e = event.getSource().getException();
             log.error("Failed to receive meeting request", e);
             mixingPartner.setVisible(false);
             requestUserAttention();
-        }
+        });
+        receiveMeetingService.start();
     }
 
     private void updateMixPartner(PaymentCode paymentCodeInitiator, CahootsType cahootsType) {
@@ -308,6 +322,7 @@ public class CounterpartyController extends SorobanController {
             CahootsContext cahootsContext = CahootsContext.newCounterparty(cahootsWallet, cahootsType, account);
             Consumer<OnlineCahootsMessage> onProgress = cahootsMessage -> {
                 if(cahootsMessage != null) {
+                    Platform.runLater(() -> {
                         Cahoots cahoots = cahootsMessage.getCahoots();
                         sorobanProgressBar.setProgress((double)(cahoots.getStep() + 1) / 5);
 
@@ -328,12 +343,23 @@ public class CounterpartyController extends SorobanController {
                                 sorobanProgressLabel.setVisible(false);
                             }
                         }
+                    });
                 }
             };
-            try {
+
-                // TODO run in background thread?
+            Service<Cahoots> cahootsService = new Service<>() {
-                Cahoots result = sorobanWalletCounterparty.counterparty(cahootsContext, initiatorPaymentCode, onProgress);
+                @Override
-            } catch (Exception error) {
+                protected Task<Cahoots> createTask() {
+                    return new Task<>() {
+                        @Override
+                        protected Cahoots call() throws Exception {
+                            return sorobanWalletCounterparty.counterparty(cahootsContext, initiatorPaymentCode, onProgress);
+                        }
+                    };
+                }
+            };
+            cahootsService.setOnFailed(event -> {
+                Throwable error = event.getSource().getException();
                 log.error("Error creating mix transaction", error);
                 String cutFrom = "Exception: ";
                 int index = error.getMessage().lastIndexOf(cutFrom);
@@ -341,7 +367,8 @@ public class CounterpartyController extends SorobanController {
                 msg = msg.replace("#Cahoots", "mix transaction");
                 step3Desc.setText(msg);
                 sorobanProgressLabel.setVisible(false);
-            }
+            });
+            cahootsService.start();
         } catch(Exception e) {
             log.error("Error creating mix transaction", e);
             sorobanProgressLabel.setText(e.getMessage());

src/main/java/com/sparrowwallet/sparrow/soroban/InitiatorController.java

@@ -38,8 +38,6 @@ import com.sparrowwallet.sparrow.paynym.PayNymAddress;
 import com.sparrowwallet.sparrow.paynym.PayNymDialog;
 import com.sparrowwallet.sparrow.paynym.PayNymService;
 import io.reactivex.Observable;
-import io.reactivex.rxjavafx.schedulers.JavaFxScheduler;
-import io.reactivex.schedulers.Schedulers;
 import javafx.application.Platform;
 import javafx.beans.property.ObjectProperty;
 import javafx.beans.property.SimpleObjectProperty;
@@ -47,6 +45,8 @@ import javafx.beans.property.SimpleStringProperty;
 import javafx.beans.property.StringProperty;
 import javafx.beans.value.ChangeListener;
 import javafx.collections.FXCollections;
+import javafx.concurrent.Service;
+import javafx.concurrent.Task;
 import javafx.event.ActionEvent;
 import javafx.fxml.FXML;
 import javafx.scene.control.*;
@@ -431,6 +431,7 @@ public class InitiatorController extends SorobanController {
                 public void onResponse(SorobanResponseMessage sorobanResponse) throws Exception {
                     super.onResponse(sorobanResponse);
 
+                    Platform.runLater(() -> {
                         requestUserAttention();
                         if(sorobanResponse.isAccept()) {
                             sorobanProgressBar.setProgress(0.1);
@@ -439,29 +440,36 @@ public class InitiatorController extends SorobanController {
                             step2Desc.setText("Mix partner declined.");
                             sorobanProgressLabel.setVisible(false);
                         }
+                    });
                 }
 
                 @Override
                 public void onInteraction(OnlineSorobanInteraction interaction) throws Exception {
                     SorobanInteraction originInteraction = interaction.getInteraction();
-                    if (originInteraction instanceof TxBroadcastInteraction) {
+                    if(originInteraction instanceof TxBroadcastInteraction) {
+                        Platform.runLater(() -> {
+                            try {
                                 Boolean accepted = (Boolean)Platform.enterNestedEventLoop(transactionAccepted);
                                 if(accepted) {
                                     interaction.sorobanAccept();
                                 } else {
                                     interaction.sorobanReject("Mix partner declined to broadcast the transaction.");
                                 }
+                            } catch(Exception e) {
+                                log.error("Error accepting Soroban interaction", e);
+                            }
+                        });
                     } else {
                         throw new Exception("Unknown interaction: "+originInteraction.getTypeInteraction());
                     }
                 }
 
                 @Override
-                public void progress(OnlineCahootsMessage message) {
+                public void progress(OnlineCahootsMessage cahootsMessage) {
-                    super.progress(message);
+                    super.progress(cahootsMessage);
 
-                    OnlineCahootsMessage cahootsMessage = (OnlineCahootsMessage)message;
                     if(cahootsMessage != null) {
+                        Platform.runLater(() -> {
                             Cahoots cahoots = cahootsMessage.getCahoots();
                             sorobanProgressBar.setProgress((double)(cahoots.getStep() + 1) / 5);
 
@@ -489,21 +497,33 @@ public class InitiatorController extends SorobanController {
                                     sorobanProgressLabel.setVisible(false);
                                 }
                             }
+                        });
                     }
                 }
             };
             SorobanWalletService sorobanWalletService = soroban.getSorobanWalletService();
             sorobanProgressLabel.setText("Waiting for mix partner...");
-            try {
+
-                // TODO run in background thread?
+            Service<Cahoots> cahootsService = new Service<>() {
-                Cahoots result = sorobanWalletService.getSorobanWalletInitiator(cahootsWallet).meetAndInitiate(cahootsContext, paymentCodeCounterparty, listener);
+                @Override
-            } catch (Exception error){
+                protected Task<Cahoots> createTask() {
+                    return new Task<>() {
+                        @Override
+                        protected Cahoots call() throws Exception {
+                            return sorobanWalletService.getSorobanWalletInitiator(cahootsWallet).meetAndInitiate(cahootsContext, paymentCodeCounterparty, listener);
+                        }
+                    };
+                }
+            };
+            cahootsService.setOnFailed(event -> {
+                Throwable error = event.getSource().getException();
                 log.error("Error receiving meeting response", error);
                 step2Desc.setText(getErrorMessage(error));
                 sorobanProgressLabel.setVisible(false);
                 meetingFail.setVisible(true);
                 requestUserAttention();
-            }
+            });
+            cahootsService.start();
         }, error -> {
             log.error("Could not retrieve payment code", error);
             if(error.getMessage().endsWith("404")) {

src/main/java/com/sparrowwallet/sparrow/soroban/Soroban.java

@@ -79,26 +79,4 @@ public class Soroban {
     public SorobanWalletService getSorobanWalletService() {
         return sorobanWalletService;
     }
-
-    public void stop() {
-        AppServices.getHttpClientService().stop();
-    }
-
-    public static class ShutdownService extends Service<Boolean> {
-        private final Soroban soroban;
-
-        public ShutdownService(Soroban soroban) {
-            this.soroban = soroban;
-        }
-
-        @Override
-        protected Task<Boolean> createTask() {
-            return new Task<>() {
-                protected Boolean call() throws Exception {
-                    soroban.stop();
-                    return true;
-                }
-            };
-        }
-    }
 }

src/main/java/com/sparrowwallet/sparrow/soroban/SorobanServices.java

@@ -53,14 +53,7 @@ public class SorobanServices {
     public void walletTabsClosed(WalletTabsClosedEvent event) {
         for(WalletTabData walletTabData : event.getClosedWalletTabData()) {
             String walletId = walletTabData.getStorage().getWalletId(walletTabData.getWallet());
-            Soroban soroban = sorobanMap.remove(walletId);
+            sorobanMap.remove(walletId);
-            if(soroban != null) {
-                Soroban.ShutdownService shutdownService = new Soroban.ShutdownService(soroban);
-                shutdownService.setOnFailed(failedEvent -> {
-                    log.error("Failed to shutdown soroban", failedEvent.getSource().getException());
-                });
-                shutdownService.start();
-            }
         }
     }
 }

src/main/java/com/sparrowwallet/sparrow/soroban/SparrowCahootsWallet.java

@@ -26,13 +26,12 @@ import java.util.List;
 
 public class SparrowCahootsWallet extends AbstractCahootsWallet {
     private final Wallet wallet;
-    private HD_Wallet bip84w;
+    private final HD_Wallet bip84w;
     private final int account;
-    private List<CahootsUtxo> utxos;
+    private final List<CahootsUtxo> utxos;
 
     public SparrowCahootsWallet(ChainSupplier chainSupplier, Wallet wallet, HD_Wallet bip84w, int bip47Account) {
-        super(chainSupplier, bip84w.getFingerprint(),
+        super(chainSupplier, bip84w.getFingerprint(), new BIP47Wallet(bip84w).getAccount(bip47Account));
-                new BIP47Wallet(bip84w).getAccount(bip47Account));
         this.wallet = wallet;
         this.bip84w = bip84w;
         this.account = wallet.getAccountIndex();
@@ -107,7 +106,7 @@ public class SparrowCahootsWallet extends AbstractCahootsWallet {
                 throw new IllegalStateException("Cannot add BIP47 UTXO", e);
             }
         } else {
-            HD_Address hdAddress = bip84w.getAddressAt(index, unspentOutput);
+            HD_Address hdAddress = bip84w.getAddressAt(account, unspentOutput);
             cahootsUtxo = new CahootsUtxo(myTransactionOutPoint, node.getDerivationPath(), null, hdAddress.getECKey().getPrivKeyBytes());
         }
 

src/main/java/com/sparrowwallet/sparrow/terminal/wallet/table/MixTableCell.java

@@ -43,7 +43,7 @@ public class MixTableCell extends TableCell {
 
     private String getMixFail(UtxoEntry.MixStatus mixStatus) {
         long elapsed = mixStatus.getMixErrorTimestamp() == null ? 0L : System.currentTimeMillis() - mixStatus.getMixErrorTimestamp();
-        if(mixStatus.getMixFailReason() == MixFailReason.CANCEL || elapsed >= ERROR_DISPLAY_MILLIS) {
+        if(mixStatus.getMixFailReason() == MixFailReason.STOP_UTXO || mixStatus.getMixFailReason().isSilent() || elapsed >= ERROR_DISPLAY_MILLIS) {
             return getMixCountOnly(mixStatus);
         }
 

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

@@ -129,9 +129,10 @@ public class WalletTransactionsEntry extends Entry {
     private static void getWalletTransactions(Wallet wallet, Map<BlockTransaction, WalletTransaction> walletTransactionMap, WalletNode purposeNode) {
         KeyPurpose keyPurpose = purposeNode.getKeyPurpose();
         List<WalletNode> childNodes = new ArrayList<>(purposeNode.getChildren());
+        Wallet transactionsWallet = wallet.isNested() ? wallet.getMasterWallet() : wallet;
         for(WalletNode addressNode : childNodes) {
             for(BlockTransactionHashIndex hashIndex : addressNode.getTransactionOutputs()) {
-                BlockTransaction inputTx = wallet.getWalletTransaction(hashIndex.getHash());
+                BlockTransaction inputTx = transactionsWallet.getWalletTransaction(hashIndex.getHash());
                 //A null inputTx here means the wallet is still updating - ignore as the WalletHistoryChangedEvent will run this again
                 if(inputTx != null) {
                     WalletTransaction inputWalletTx = walletTransactionMap.get(inputTx);
@@ -142,7 +143,7 @@ public class WalletTransactionsEntry extends Entry {
                     inputWalletTx.incoming.put(hashIndex, keyPurpose);
 
                     if(hashIndex.getSpentBy() != null) {
-                        BlockTransaction outputTx = wallet.getWalletTransaction(hashIndex.getSpentBy().getHash());
+                        BlockTransaction outputTx = transactionsWallet.getWalletTransaction(hashIndex.getSpentBy().getHash());
                         if(outputTx != null) {
                             WalletTransaction outputWalletTx = walletTransactionMap.get(outputTx);
                             if(outputWalletTx == null) {

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

@@ -6,6 +6,7 @@ import com.sparrowwallet.drongo.wallet.WalletNode;
 import com.sparrowwallet.sparrow.AppServices;
 import com.sparrowwallet.sparrow.io.Config;
 import com.sparrowwallet.sparrow.whirlpool.Whirlpool;
+import javafx.application.Platform;
 
 import java.util.*;
 import java.util.stream.Collectors;
@@ -92,7 +93,8 @@ public class WalletUtxosEntry extends Entry {
 
         calculateDuplicates();
         calculateDust();
-        updateMixProgress();
+        //Update mix status after SparrowUtxoSupplier has refreshed
+        Platform.runLater(this::updateMixProgress);
     }
 
     public long getBalance() {

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

@@ -33,10 +33,7 @@ import com.sparrowwallet.drongo.ExtendedKey;
 import com.sparrowwallet.drongo.KeyPurpose;
 import com.sparrowwallet.drongo.Network;
 import com.sparrowwallet.drongo.Utils;
-import com.sparrowwallet.drongo.protocol.Sha256Hash;
+import com.sparrowwallet.drongo.protocol.*;
-import com.sparrowwallet.drongo.protocol.Transaction;
-import com.sparrowwallet.drongo.protocol.TransactionInput;
-import com.sparrowwallet.drongo.protocol.TransactionOutput;
 import com.sparrowwallet.drongo.wallet.*;
 import com.sparrowwallet.sparrow.AppServices;
 import com.sparrowwallet.sparrow.EventManager;
@@ -71,7 +68,6 @@ public class Whirlpool {
     public static final int DEFAULT_MIXTO_MIN_MIXES = 3;
     public static final int DEFAULT_MIXTO_RANDOM_FACTOR = 4;
 
-
     private final WhirlpoolWalletService whirlpoolWalletService;
     private final WhirlpoolWalletConfig config;
     private WhirlpoolInfo whirlpoolInfo;
@@ -89,11 +85,10 @@ public class Whirlpool {
     private final BooleanProperty stoppingProperty = new SimpleBooleanProperty(false);
     private final BooleanProperty mixingProperty = new SimpleBooleanProperty(false);
 
-    public Whirlpool() {
+    public Whirlpool(Integer storedBlockHeight) {
         this.whirlpoolWalletService = new WhirlpoolWalletService();
-        Integer storedBlockHeight = null; // TODO
         this.config = computeWhirlpoolWalletConfig(storedBlockHeight);
-        this.whirlpoolInfo = null; // instanciated by getWhirlpoolInfo()
+        this.whirlpoolInfo = null; // instantiated by getWhirlpoolInfo()
 
         WhirlpoolEventService.getInstance().register(this);
     }
@@ -112,17 +107,14 @@ public class Whirlpool {
     }
 
     private DataSourceConfig computeDataSourceConfig(Integer storedBlockHeight) {
-        return new DataSourceConfig(
+        return new DataSourceConfig(SparrowMinerFeeSupplier.getInstance(), new SparrowChainSupplier(storedBlockHeight), BIP_FORMAT.PROVIDER, BIP_WALLETS.WHIRLPOOL);
-                SparrowMinerFeeSupplier.getInstance(),
-                new SparrowChainSupplier(storedBlockHeight),
-                BIP_FORMAT.PROVIDER,
-                BIP_WALLETS.WHIRLPOOL);
     }
 
     private WhirlpoolInfo getWhirlpoolInfo() {
-        if (whirlpoolInfo == null) {
+        if(whirlpoolInfo == null) {
             whirlpoolInfo = new WhirlpoolInfo(SparrowMinerFeeSupplier.getInstance(), config);
         }
+
         return whirlpoolInfo;
     }
 
@@ -144,8 +136,7 @@ public class Whirlpool {
 
     public Tx0 broadcastTx0(Pool pool, Collection<BlockTransactionHashIndex> utxos) throws Exception {
         WhirlpoolWallet whirlpoolWallet = getWhirlpoolWallet();
-        whirlpoolWallet.startAsync().subscribeOn(Schedulers.io())
+        whirlpoolWallet.startAsync().subscribeOn(Schedulers.io()).observeOn(JavaFxScheduler.platform());
-                .observeOn(JavaFxScheduler.platform());
         UtxoSupplier utxoSupplier = whirlpoolWallet.getUtxoSupplier();
         List<WhirlpoolUtxo> whirlpoolUtxos = utxos.stream().map(ref -> utxoSupplier.findUtxo(ref.getHashAsString(), (int)ref.getIndex())).filter(Objects::nonNull).collect(Collectors.toList());
 
@@ -177,10 +168,13 @@ public class Whirlpool {
 
         try {
             Keystore keystore = wallet.getKeystores().get(0);
-            String words = keystore.getSeed().getMnemonicString().asString();
+            ScriptType scriptType = wallet.getScriptType();
+            int purpose = scriptType.getDefaultDerivation().get(0).num();
+            List<String> words = keystore.getSeed().getMnemonicCode();
             String passphrase = keystore.getSeed().getPassphrase() == null ? "" : keystore.getSeed().getPassphrase().asString();
             HD_WalletFactoryGeneric hdWalletFactory = HD_WalletFactoryGeneric.getInstance();
-            return hdWalletFactory.restoreWalletFromWords(words, passphrase, params);
+            byte[] seed = hdWalletFactory.computeSeedFromWords(words);
+            return hdWalletFactory.getHD(purpose, seed, passphrase, params);
         } catch(Exception e) {
             throw new IllegalStateException("Could not create Whirlpool HD wallet ", e);
         }
@@ -264,9 +258,7 @@ public class Whirlpool {
 
     public void refreshUtxos() {
         if(whirlpoolWalletService.whirlpoolWallet() != null) {
-            whirlpoolWalletService.whirlpoolWallet().refreshUtxosAsync()
+            whirlpoolWalletService.whirlpoolWallet().refreshUtxosAsync().subscribeOn(Schedulers.io()).observeOn(JavaFxScheduler.platform());
-                    .subscribeOn(Schedulers.io())
-                    .observeOn(JavaFxScheduler.platform());
         }
     }
 
@@ -352,7 +344,6 @@ public class Whirlpool {
 
     public void shutdown() {
         whirlpoolWalletService.closeWallet();
-        AppServices.getHttpClientService().stop();
     }
 
     public StartupService createStartupService() {
@@ -517,7 +508,12 @@ public class Whirlpool {
             int mixes = minMixes == null ? DEFAULT_MIXTO_MIN_MIXES : minMixes;
 
             IPostmixHandler postmixHandler = new SparrowPostmixHandler(whirlpoolWalletService, mixToWallet, KeyPurpose.RECEIVE);
-            ExternalDestination externalDestination = new ExternalDestination(postmixHandler, 0, mixes, DEFAULT_MIXTO_RANDOM_FACTOR);
+            ExternalDestination externalDestination = new ExternalDestination(postmixHandler, 0, mixes, DEFAULT_MIXTO_RANDOM_FACTOR) {
+                @Override
+                public IPostmixHandler getPostmixHandlerCustomOrDefault(WhirlpoolWallet whirlpoolWallet) {
+                    return postmixHandler;
+                }
+            };
             config.setExternalDestination(externalDestination);
         }
 
@@ -715,10 +711,7 @@ public class Whirlpool {
                         whirlpool.startingProperty.set(true);
                         WhirlpoolWallet whirlpoolWallet = whirlpool.getWhirlpoolWallet();
                         if(AppServices.onlineProperty().get()) {
-                            whirlpoolWallet.startAsync()
+                            whirlpoolWallet.startAsync().subscribeOn(Schedulers.io()).observeOn(JavaFxScheduler.platform()).subscribe();
-                                    .subscribeOn(Schedulers.io())
-                                    .observeOn(JavaFxScheduler.platform())
-                                    .subscribe();
                         }
 
                         return whirlpoolWallet;

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

@@ -73,7 +73,8 @@ public class WhirlpoolServices {
     public Whirlpool getWhirlpool(String walletId) {
         Whirlpool whirlpool = whirlpoolMap.get(walletId);
         if(whirlpool == null) {
-            whirlpool = new Whirlpool();
+            Wallet wallet = AppServices.get().getWallet(walletId);
+            whirlpool = new Whirlpool(wallet == null ? null : wallet.getStoredBlockHeight());
             whirlpoolMap.put(walletId, whirlpool);
         }
 

src/main/java/com/sparrowwallet/sparrow/whirlpool/dataSource/SparrowChainSupplier.java

@@ -3,19 +3,18 @@ package com.sparrowwallet.sparrow.whirlpool.dataSource;
 import com.google.common.eventbus.Subscribe;
 import com.samourai.wallet.api.backend.beans.WalletResponse;
 import com.samourai.wallet.chain.ChainSupplier;
+import com.sparrowwallet.drongo.Utils;
 import com.sparrowwallet.drongo.protocol.Sha256Hash;
 import com.sparrowwallet.sparrow.AppServices;
 import com.sparrowwallet.sparrow.EventManager;
 import com.sparrowwallet.sparrow.event.NewBlockEvent;
 
 public class SparrowChainSupplier implements ChainSupplier {
-    private int storedBlockHeight;
+    private final int storedBlockHeight;
     private WalletResponse.InfoBlock latestBlock;
 
     public SparrowChainSupplier(Integer storedBlockHeight) {
-        this.storedBlockHeight = AppServices.getCurrentBlockHeight() == null ?
+        this.storedBlockHeight = AppServices.getCurrentBlockHeight() == null ? (storedBlockHeight != null ? storedBlockHeight : 0) : AppServices.getCurrentBlockHeight();
-                (storedBlockHeight!=null?storedBlockHeight:0)
-                : AppServices.getCurrentBlockHeight();
         this.latestBlock = computeLatestBlock();
         EventManager.get().register(this);
     }
@@ -27,7 +26,8 @@ public class SparrowChainSupplier implements ChainSupplier {
     private WalletResponse.InfoBlock computeLatestBlock() {
         WalletResponse.InfoBlock latestBlock = new WalletResponse.InfoBlock();
         latestBlock.height = AppServices.getCurrentBlockHeight() == null ? storedBlockHeight : AppServices.getCurrentBlockHeight();
-        latestBlock.hash = Sha256Hash.ZERO_HASH.toString();
+        latestBlock.hash = AppServices.getLatestBlockHeader() == null ? Sha256Hash.ZERO_HASH.toString() :
+                Utils.bytesToHex(Sha256Hash.twiceOf(AppServices.getLatestBlockHeader().bitcoinSerialize()).getReversedBytes());
         latestBlock.time = AppServices.getLatestBlockHeader() == null ? 1 : AppServices.getLatestBlockHeader().getTime();
         return latestBlock;
     }

src/main/java/com/sparrowwallet/sparrow/whirlpool/dataSource/SparrowDataSource.java

@@ -40,7 +40,7 @@ public class SparrowDataSource extends AbstractDataSource {
 
     private final ISeenBackend seenBackend;
     private final IPushTx pushTx;
-    private SparrowUtxoSupplier utxoSupplier;
+    private final SparrowUtxoSupplier utxoSupplier;
 
     public SparrowDataSource(
             WhirlpoolWallet whirlpoolWallet,
@@ -57,7 +57,7 @@ public class SparrowDataSource extends AbstractDataSource {
 
     private ISeenBackend computeSeenBackend(WhirlpoolWalletConfig whirlpoolWalletConfig) {
         IHttpClient httpClient = whirlpoolWalletConfig.getHttpClient(HttpUsage.BACKEND);
-        ISeenBackend sparrowSeenBackend = new SparrowSeenBackend(httpClient);
+        ISeenBackend sparrowSeenBackend = new SparrowSeenBackend(getWhirlpoolWallet().getWalletIdentifier(), httpClient);
         NetworkParameters params = whirlpoolWalletConfig.getSamouraiNetwork().getParams();
         return SeenBackendWithFallback.withOxt(sparrowSeenBackend, params);
     }

src/main/java/com/sparrowwallet/sparrow/whirlpool/dataSource/SparrowPostmixHandler.java

@@ -1,8 +1,10 @@
 package com.sparrowwallet.sparrow.whirlpool.dataSource;
 
-import com.samourai.whirlpool.client.mix.handler.AbstractPostmixHandler;
+import com.samourai.wallet.client.indexHandler.IIndexHandler;
 import com.samourai.whirlpool.client.mix.handler.DestinationType;
+import com.samourai.whirlpool.client.mix.handler.IPostmixHandler;
 import com.samourai.whirlpool.client.mix.handler.MixDestination;
+import com.samourai.whirlpool.client.utils.ClientUtils;
 import com.samourai.whirlpool.client.wallet.WhirlpoolWalletService;
 import com.samourai.whirlpool.client.wallet.beans.IndexRange;
 import com.sparrowwallet.drongo.KeyPurpose;
@@ -12,21 +14,21 @@ import com.sparrowwallet.drongo.wallet.WalletNode;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
-// TODO maybe replace with XPubPostmixHandler
+public class SparrowPostmixHandler implements IPostmixHandler {
-public class SparrowPostmixHandler extends AbstractPostmixHandler {
     private static final Logger log = LoggerFactory.getLogger(SparrowPostmixHandler.class);
 
+    private final WhirlpoolWalletService whirlpoolWalletService;
     private final Wallet wallet;
     private final KeyPurpose keyPurpose;
 
+    protected MixDestination destination;
+
     public SparrowPostmixHandler(WhirlpoolWalletService whirlpoolWalletService, Wallet wallet, KeyPurpose keyPurpose) {
-        super(whirlpoolWalletService.whirlpoolWallet().getWalletStateSupplier().getIndexHandlerExternal(),
+        this.whirlpoolWalletService = whirlpoolWalletService;
-                whirlpoolWalletService.whirlpoolWallet().getConfig().getSamouraiNetwork().getParams());
         this.wallet = wallet;
         this.keyPurpose = keyPurpose;
     }
 
-    @Override
     protected IndexRange getIndexRange() {
         return IndexRange.FULL;
     }
@@ -35,14 +37,50 @@ public class SparrowPostmixHandler extends AbstractPostmixHandler {
         return wallet;
     }
 
+    @Override
+    public final MixDestination computeDestinationNext() throws Exception {
+        // use "unconfirmed" index to avoid huge index gaps on multiple mix failures
+        int index = ClientUtils.computeNextReceiveAddressIndex(getIndexHandler(), getIndexRange());
+        this.destination = computeDestination(index);
+        if (log.isDebugEnabled()) {
+            log.debug(
+                    "Mixing to "
+                            + destination.getType()
+                            + " -> receiveAddress="
+                            + destination.getAddress()
+                            + ", path="
+                            + destination.getPath());
+        }
+        return destination;
+    }
+
     @Override
     public MixDestination computeDestination(int index) throws Exception {
         // address
         WalletNode node = new WalletNode(wallet, keyPurpose, index);
         Address address = node.getAddress();
-        String path = "xpub/"+keyPurpose.getPathIndex().num()+"/"+index;
+        String path = "xpub/" + keyPurpose.getPathIndex().num() + "/" + index;
 
         log.info("Mixing to external xPub -> receiveAddress=" + address + ", path=" + path);
         return new MixDestination(DestinationType.XPUB, index, address.toString(), path);
     }
+
+    @Override
+    public void onMixFail() {
+        if(destination != null) {
+            // cancel unconfirmed postmix index if output was not registered yet
+            getIndexHandler().cancelUnconfirmed(destination.getIndex());
+        }
+    }
+
+    @Override
+    public void onRegisterOutput() {
+        // confirm postmix index on REGISTER_OUTPUT success
+        getIndexHandler().confirmUnconfirmed(destination.getIndex());
+    }
+
+    @Override
+    public IIndexHandler getIndexHandler() {
+        return whirlpoolWalletService.whirlpoolWallet().getWalletStateSupplier().getIndexHandlerExternal();
+    }
 }

src/main/java/com/sparrowwallet/sparrow/whirlpool/dataSource/SparrowSeenBackend.java

@@ -3,30 +3,51 @@ package com.sparrowwallet.sparrow.whirlpool.dataSource;
 import com.samourai.wallet.api.backend.seenBackend.ISeenBackend;
 import com.samourai.wallet.api.backend.seenBackend.SeenResponse;
 import com.samourai.wallet.httpClient.IHttpClient;
+import com.sparrowwallet.drongo.address.Address;
+import com.sparrowwallet.drongo.wallet.Wallet;
+import com.sparrowwallet.drongo.wallet.WalletNode;
+import com.sparrowwallet.sparrow.AppServices;
 
 import java.util.Collection;
 import java.util.LinkedHashMap;
+import java.util.List;
 import java.util.Map;
 
 public class SparrowSeenBackend implements ISeenBackend {
-    private IHttpClient httpClient;
+    private final String walletId;
+    private final IHttpClient httpClient;
 
-    public SparrowSeenBackend(IHttpClient httpClient) {
+    public SparrowSeenBackend(String walletId, IHttpClient httpClient) {
+        this.walletId = walletId;
         this.httpClient = httpClient;
     }
 
     @Override
     public SeenResponse seen(Collection<String> addresses) throws Exception {
-        Map<String,Boolean> map = new LinkedHashMap<>();
+        Wallet wallet = AppServices.get().getWallet(walletId);
-        for (String address : addresses) {
+        Map<Address, WalletNode> addressMap = wallet.getWalletAddresses();
-            map.put(address, seen(address));
+        for(Wallet childWallet : wallet.getChildWallets()) {
+            if(!childWallet.isNested()) {
+                addressMap.putAll(childWallet.getWalletAddresses());
             }
+        }
+
+        Map<String,Boolean> map = new LinkedHashMap<>();
+        for(String address : addresses) {
+            WalletNode walletNode = addressMap.get(Address.fromString(address));
+            if(walletNode != null) {
+                int highestUsedIndex = walletNode.getWallet().getNode(walletNode.getKeyPurpose()).getHighestUsedIndex();
+                map.put(address, walletNode.getIndex() <= highestUsedIndex);
+            }
+        }
+
         return new SeenResponse(map);
     }
 
     @Override
     public boolean seen(String address) throws Exception {
-        return false; // TODO implement: return true if address already received funds
+        SeenResponse seenResponse = seen(List.of(address));
+        return seenResponse.isSeen(address);
     }
 
     @Override

src/main/java/com/sparrowwallet/sparrow/whirlpool/dataSource/SparrowWalletStateSupplier.java

@@ -35,7 +35,7 @@ public class SparrowWalletStateSupplier implements WalletStateSupplier {
         SamouraiAccount samouraiAccount = bipWallet.getAccount();
         String key = mapKey(bipWallet, chain);
         IIndexHandler indexHandler = indexHandlerWallets.get(key);
-        if (indexHandler == null) {
+        if(indexHandler == null) {
             Wallet wallet = findWallet(samouraiAccount);
             KeyPurpose keyPurpose = (chain == Chain.RECEIVE ? KeyPurpose.RECEIVE : KeyPurpose.CHANGE);
             WalletNode walletNode = wallet.getNode(keyPurpose);
@@ -123,7 +123,7 @@ public class SparrowWalletStateSupplier implements WalletStateSupplier {
     private String mapKey(BipWallet bipWallet, Chain chain) {
         SamouraiAccount samouraiAccount = bipWallet.getAccount();
         BipDerivation derivation = bipWallet.getDerivation();
-        return samouraiAccount.name()+"_"+derivation.getPurpose()+"_"+chain.getIndex();
+        return samouraiAccount.name() + "_" + derivation.getPurpose() + "_" + chain.getIndex();
     }
 
     private Wallet findWallet(SamouraiAccount samouraiAccount) {

src/main/java/module-info.java

@@ -64,7 +64,6 @@ open module com.sparrowwallet.sparrow {
     requires com.sparrowwallet.bokmakierie;
     requires java.smartcardio;
     requires com.jcraft.jzlib;
-    // samourai dependencies
     requires com.samourai.whirlpool.client;
     requires com.samourai.whirlpool.protocol;
     requires com.samourai.extlibj;