From 00071d3cfcc1bb6485208361b23bc1e94be9bf23 Mon Sep 17 00:00:00 2001
From: Mike Hearn <mike@plan99.net>
Date: Fri, 1 Mar 2013 17:27:50 +0100
Subject: [PATCH] Add a couple of convenience features:
 peerGroup.addAddress(InetAddress) and an AbstractBlockChainListener class.

---
 .../core/AbstractBlockChainListener.java      | 40 +++++++++++++++++++
 .../com/google/bitcoin/core/PeerGroup.java    |  6 +++
 2 files changed, 46 insertions(+)
 create mode 100644 core/src/main/java/com/google/bitcoin/core/AbstractBlockChainListener.java

diff --git a/core/src/main/java/com/google/bitcoin/core/AbstractBlockChainListener.java b/core/src/main/java/com/google/bitcoin/core/AbstractBlockChainListener.java
new file mode 100644
index 00000000..92f5264a
--- /dev/null
+++ b/core/src/main/java/com/google/bitcoin/core/AbstractBlockChainListener.java
@@ -0,0 +1,40 @@
+/**
+ * Copyright 2013 Google Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.bitcoin.core;
+
+import java.util.List;
+
+/**
+ * Default no-op implementation of {@link BlockChainListener}.
+ */
+public class AbstractBlockChainListener implements BlockChainListener {
+    public void notifyNewBestBlock(Block block) throws VerificationException {
+    }
+
+    public void reorganize(StoredBlock splitPoint, List<StoredBlock> oldBlocks, List<StoredBlock> newBlocks) throws VerificationException {
+    }
+
+    public boolean isTransactionRelevant(Transaction tx) throws ScriptException {
+        return false;
+    }
+
+    public void receiveFromBlock(Transaction tx, StoredBlock block, BlockChain.NewBlockType blockType) throws VerificationException {
+    }
+
+    public void notifyTransactionIsInBlock(Sha256Hash txHash, StoredBlock block, BlockChain.NewBlockType blockType) throws VerificationException {
+    }
+}
diff --git a/core/src/main/java/com/google/bitcoin/core/PeerGroup.java b/core/src/main/java/com/google/bitcoin/core/PeerGroup.java
index 6df311cc..ebee594b 100644
--- a/core/src/main/java/com/google/bitcoin/core/PeerGroup.java
+++ b/core/src/main/java/com/google/bitcoin/core/PeerGroup.java
@@ -33,6 +33,7 @@ import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
 import java.io.IOException;
+import java.net.InetAddress;
 import java.net.InetSocketAddress;
 import java.net.SocketAddress;
 import java.util.*;
@@ -443,6 +444,11 @@ public class PeerGroup extends AbstractIdleService {
         setMaxConnections(newMax);
     }
 
+    /** Convenience method for addAddress(new PeerAddress(address, params.port)); */
+    public void addAddress(InetAddress address) {
+        addAddress(new PeerAddress(address, params.port));
+    }
+
     /**
      * Add addresses from a discovery source to the list of potential peers to connect to. If max connections has not
      * been configured, or set to zero, then it's set to the default at this point.