Select a random host when importing a bootstrap, and started adding support for multiple bootstrap types.

src/main/java/org/qortal/repository/Bootstrap.java

@@ -18,6 +18,7 @@ import java.io.IOException;
 import java.io.InputStream;
 import java.net.URL;
 import java.nio.file.*;
+import java.security.SecureRandom;
 import java.util.List;
 import java.util.concurrent.TimeoutException;
 import java.util.concurrent.locks.ReentrantLock;
@@ -256,7 +257,7 @@ public class Bootstrap {
             );
 
             LOGGER.info("Compressing...");
-            String compressedOutputPath = String.format("%s%s", Settings.getInstance().getBootstrapFilenamePrefix(), "bootstrap.7z");
+            String compressedOutputPath = String.format("%s%s", Settings.getInstance().getBootstrapFilenamePrefix(), this.getFilename());
             try {
                 Files.delete(Paths.get(compressedOutputPath));
             } catch (NoSuchFileException e) {
@@ -305,7 +306,8 @@ public class Bootstrap {
         Path path = null;
         try {
             Path tempDir = Files.createTempDirectory("qortal-bootstrap");
-            path = Paths.get(tempDir.toString(), "bootstrap.7z");
+            String filename = String.format("%s%s", Settings.getInstance().getBootstrapFilenamePrefix(), this.getFilename());
+            path = Paths.get(tempDir.toString(), filename);
 
             this.downloadToPath(path);
             this.importFromPath(path);
@@ -325,11 +327,31 @@ public class Bootstrap {
         }
     }
 
+    private String getFilename() {
+        boolean pruningEnabled = Settings.getInstance().isPruningEnabled();
+        boolean archiveEnabled = Settings.getInstance().isArchiveEnabled();
+
+        if (pruningEnabled) {
+            return "bootstrap-toponly.7z";
+        }
+        else if (archiveEnabled) {
+            return "bootstrap-archive.7z";
+        }
+        else {
+            return "bootstrap-full.7z";
+        }
+    }
+
     private void downloadToPath(Path path) throws DataException {
-        String bootstrapUrl = "http://bootstrap.qortal.org/bootstrap.7z";
+        // Select a random host from bootstrapHosts
+        String[] hosts = Settings.getInstance().getBootstrapHosts();
+        int index = new SecureRandom().nextInt(hosts.length);
+        String bootstrapHost = hosts[index];
+        String bootstrapFilename = this.getFilename();
 
         try {
             LOGGER.info("Downloading bootstrap...");
+            String bootstrapUrl = String.format("%s/%s", bootstrapHost, bootstrapFilename);
             InputStream in = new URL(bootstrapUrl).openStream();
             Files.copy(in, path, REPLACE_EXISTING);
 

src/main/java/org/qortal/settings/Settings.java

@@ -194,6 +194,11 @@ public class Settings {
 	// Bootstrap
 	private String bootstrapFilenamePrefix = "";
 
+	// Bootstrap sources
+	private String[] bootstrapHosts = new String[] {
+			"http://bootstrap.qortal.org"
+	};
+
 	// Auto-update sources
 	private String[] autoUpdateRepos = new String[] {
 		"https://github.com/Qortal/qortal/raw/%s/qortal.update",
@@ -528,6 +533,10 @@ public class Settings {
 		return this.autoUpdateRepos;
 	}
 
+	public String[] getBootstrapHosts() {
+		return this.bootstrapHosts;
+	}
+
 	public String getListsPath() {
 		return this.listsPath;
 	}

src/test/java/org/qortal/test/BootstrapTests.java

@@ -67,7 +67,7 @@ public class BootstrapTests extends Common {
     @Test
     public void testCreateAndImportBootstrap() throws DataException, InterruptedException, TransformationException, IOException {
 
-        Path bootstrapPath = Paths.get(String.format("%s%s", Settings.getInstance().getBootstrapFilenamePrefix(), "bootstrap.7z"));
+        Path bootstrapPath = Paths.get(String.format("%s%s", Settings.getInstance().getBootstrapFilenamePrefix(), "bootstrap-archive.7z"));
         Path archivePath = Paths.get(Settings.getInstance().getRepositoryPath(), "archive", "2-900.dat");
         BlockData block1000;
         byte[] originalArchiveContents;
@@ -183,7 +183,23 @@ public class BootstrapTests extends Common {
 
     private void deleteBootstraps() throws IOException {
         try {
-            Path path = Paths.get(String.format("%s%s", Settings.getInstance().getBootstrapFilenamePrefix(), "bootstrap.7z"));
+            Path path = Paths.get(String.format("%s%s", Settings.getInstance().getBootstrapFilenamePrefix(), "bootstrap-archive.7z"));
+            Files.delete(path);
+
+        } catch (NoSuchFileException e) {
+            // Nothing to delete
+        }
+
+        try {
+            Path path = Paths.get(String.format("%s%s", Settings.getInstance().getBootstrapFilenamePrefix(), "bootstrap-toponly.7z"));
+            Files.delete(path);
+
+        } catch (NoSuchFileException e) {
+            // Nothing to delete
+        }
+
+        try {
+            Path path = Paths.get(String.format("%s%s", Settings.getInstance().getBootstrapFilenamePrefix(), "bootstrap-full.7z"));
             Files.delete(path);
 
         } catch (NoSuchFileException e) {