add signet support

README.md

@@ -45,10 +45,10 @@ Usage: sparrow [options]
       Show usage
     --network, -n
       Network to use
-      Possible Values: [mainnet, testnet, regtest]
+      Possible Values: [mainnet, testnet, regtest, signet]
 ```
 
-As a fallback, the network (mainnet, testnet or regtest) can also be set using an environment variable `SPARROW_NETWORK`. For example:
+As a fallback, the network (mainnet, testnet, regtest or signet) can also be set using an environment variable `SPARROW_NETWORK`. For example:
 
 `export SPARROW_NETWORK=testnet`
 
@@ -64,7 +64,7 @@ OSX      | ~/.sparrow
 Linux    | ~/.sparrow
 Windows  | %APPDATA%/Sparrow
 
-Testnet and regtest configurations (along with their wallets) are stored in subfolders to allow easy switching between networks.
+Testnet, regtest and signet configurations (along with their wallets) are stored in subfolders to allow easy switching between networks.
 
 ## Reporting Issues
 

drongo

@@ -1 +1 @@
-Subproject commit fe91063e8fa5acb967907c6e1f65b21e7bca0375
+Subproject commit 08acfe5ba16ed54ebbdcb8177cea88e4c53bda77

src/main/java/com/sparrowwallet/sparrow/MainApp.java

@@ -142,6 +142,11 @@ public class MainApp extends Application {
             Network.set(Network.TESTNET);
         }
 
+        File signetFlag = new File(Storage.getSparrowHome(), "network-" + Network.SIGNET.getName());
+        if(signetFlag.exists()) {
+            Network.set(Network.SIGNET);
+        }
+
         if(Network.get() != Network.MAINNET) {
             getLogger().info("Using " + Network.get() + " configuration");
         }

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

@@ -632,6 +632,9 @@ public class ElectrumServer {
             Map<Integer, Double> targetBlocksFeeRatesSats = new TreeMap<>();
             for(Integer target : targetBlocksFeeRatesBtcKb.keySet()) {
                 long minFeeRateSatsKb = (long)(targetBlocksFeeRatesBtcKb.get(target) * Transaction.SATOSHIS_PER_BITCOIN);
+                if(minFeeRateSatsKb < 0) {
+                    minFeeRateSatsKb = 1000;
+                }
                 targetBlocksFeeRatesSats.put(target, minFeeRateSatsKb / 1000d);
             }
 

src/test/java/com/sparrowwallet/sparrow/io/ElectrumTest.java

@@ -59,7 +59,7 @@ public class ElectrumTest extends IoTest {
         Assert.assertEquals(PolicyType.MULTI, wallet.getPolicyType());
         Assert.assertEquals(ScriptType.P2SH_P2WSH, wallet.getScriptType());
         Assert.assertEquals(2, wallet.getDefaultPolicy().getNumSignaturesRequired());
-        Assert.assertEquals("sh(wsh(sortedmulti(2,coldcard6ba6cfd0,coldcard747b698e,coldcard7bb026be,coldcard0f056943)))", wallet.getDefaultPolicy().getMiniscript().getScript());
+        Assert.assertEquals("sh(wsh(sortedmulti(2,coldcard6ba6cfd,coldcard747b698,coldcard7bb026b,coldcard0f05694)))", wallet.getDefaultPolicy().getMiniscript().getScript());
         Assert.assertEquals("6ba6cfd0", wallet.getKeystores().get(0).getKeyDerivation().getMasterFingerprint());
         Assert.assertEquals("m/48'/1'/0'/1'", wallet.getKeystores().get(0).getKeyDerivation().getDerivationPath());
         Assert.assertEquals("tpubDFcrvj5n7gyatVbr8dHCUfHT4CGvL8hREBjtxc4ge7HZgqNuPhFimPRtVg6fRRwfXiQthV9EBjNbwbpgV2VoQeL1ZNXoAWXxP2L9vMtRjax", wallet.getKeystores().get(0).getExtendedPublicKey().toString());
@@ -82,7 +82,7 @@ public class ElectrumTest extends IoTest {
         Assert.assertEquals(PolicyType.MULTI, wallet.getPolicyType());
         Assert.assertEquals(ScriptType.P2SH_P2WSH, wallet.getScriptType());
         Assert.assertEquals(2, wallet.getDefaultPolicy().getNumSignaturesRequired());
-        Assert.assertEquals("sh(wsh(sortedmulti(2,coldcard6ba6cfd0,coldcard747b698e,coldcard7bb026be,coldcard0f056943)))", wallet.getDefaultPolicy().getMiniscript().getScript());
+        Assert.assertEquals("sh(wsh(sortedmulti(2,coldcard6ba6cfd,coldcard747b698,coldcard7bb026b,coldcard0f05694)))", wallet.getDefaultPolicy().getMiniscript().getScript());
         Assert.assertEquals("6ba6cfd0", wallet.getKeystores().get(0).getKeyDerivation().getMasterFingerprint());
         Assert.assertEquals("m/48'/1'/0'/1'", wallet.getKeystores().get(0).getKeyDerivation().getDerivationPath());
         Assert.assertEquals("tpubDFcrvj5n7gyatVbr8dHCUfHT4CGvL8hREBjtxc4ge7HZgqNuPhFimPRtVg6fRRwfXiQthV9EBjNbwbpgV2VoQeL1ZNXoAWXxP2L9vMtRjax", wallet.getKeystores().get(0).getExtendedPublicKey().toString());