X-Git-Url: http://git.bitcoin.ninja/index.cgi?a=blobdiff_plain;f=src%2Fmain%2Fjava%2Forg%2Fldk%2Fstructs%2FListen.java;h=8d5972171401f37d055c1b182118b076700b67a6;hb=6fe917116a65d7b62123226c4240d77ea2719783;hp=456b44f8372fce25568e66bbbccf42845729cea7;hpb=17113550a5fefab21f39f27fbfe02646b8db53ae;p=ldk-java

diff --git a/src/main/java/org/ldk/structs/Listen.java b/src/main/java/org/ldk/structs/Listen.java
index 456b44f8..8d597217 100644
--- a/src/main/java/org/ldk/structs/Listen.java
+++ b/src/main/java/org/ldk/structs/Listen.java
@@ -4,12 +4,17 @@ import org.ldk.impl.bindings;
 import org.ldk.enums.*;
 import org.ldk.util.*;
 import java.util.Arrays;
+import java.lang.ref.Reference;
+import javax.annotation.Nullable;
 
 /**
- * The `Listen` trait is used to be notified of when blocks have been connected or disconnected
- * from the chain.
+ * The `Listen` trait is used to notify when blocks have been connected or disconnected from the
+ * chain.
  * 
- * Useful when needing to replay chain data upon startup or as new chain events occur.
+ * Useful when needing to replay chain data upon startup or as new chain events occur. Clients
+ * sourcing chain data using a block-oriented API should prefer this interface over [`Confirm`].
+ * Such clients fetch the entire header chain whereas clients using [`Confirm`] only fetch headers
+ * when needed.
  */
 @SuppressWarnings("unchecked") // We correctly assign various generic arrays
 public class Listen extends CommonBase {
@@ -41,9 +46,11 @@ public class Listen extends CommonBase {
 		impl_holder.held = new Listen(new bindings.LDKListen() {
 			@Override public void block_connected(byte[] block, int height) {
 				arg.block_connected(block, height);
+				Reference.reachabilityFence(arg);
 			}
 			@Override public void block_disconnected(byte[] header, int height) {
 				arg.block_disconnected(header, height);
+				Reference.reachabilityFence(arg);
 			}
 		});
 		return impl_holder.held;
@@ -53,13 +60,19 @@ public class Listen extends CommonBase {
 	 */
 	public void block_connected(byte[] block, int height) {
 		bindings.Listen_block_connected(this.ptr, block, height);
+		Reference.reachabilityFence(this);
+		Reference.reachabilityFence(block);
+		Reference.reachabilityFence(height);
 	}
 
 	/**
 	 * Notifies the listener that a block was removed at the given height.
 	 */
 	public void block_disconnected(byte[] header, int height) {
-		bindings.Listen_block_disconnected(this.ptr, header, height);
+		bindings.Listen_block_disconnected(this.ptr, InternalUtils.check_arr_len(header, 80), height);
+		Reference.reachabilityFence(this);
+		Reference.reachabilityFence(header);
+		Reference.reachabilityFence(height);
 	}
 
 }