Dash support: Ignore non-bitcoin messages when allowMoreInventoryType…

…s() and allowMoreMessages() is on.

core/src/main/java/org/bitcoinj/core/BitcoinSerializer.java

@@ -229,6 +229,8 @@ private Message makeMessage(String command, int length, byte[] payloadBytes, byt
             return new UTXOsMessage(params, payloadBytes);
         } else if (command.equals("getutxos")) {
             return new GetUTXOsMessage(params, payloadBytes);
+        } else if(params.allowMoreMessages()) {
+            return new IgnoreThisMessage(params);
         } else {
             log.warn("No support for deserializing message with name {}", command);
             return new UnknownMessage(params, command, payloadBytes);

core/src/main/java/org/bitcoinj/core/IgnoreThisMessage.java

@@ -0,0 +1,15 @@
+package org.bitcoinj.core;
+
+/**
+ * Created by Hash Engineering on 6/26/2017.
+ *
+ * This is a wrapper to allow a message to be ignored that bitcoinj
+ * will not process.  This will prevent the peer from being rejected.
+ */
+public class IgnoreThisMessage extends EmptyMessage {
+
+    public IgnoreThisMessage(NetworkParameters params) {
+        super(params);
+        length = 0;
+    }
+}

core/src/main/java/org/bitcoinj/core/ListMessage.java

@@ -17,6 +17,9 @@
 
 package org.bitcoinj.core;
 
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
 import java.io.IOException;
 import java.io.OutputStream;
 import java.util.ArrayList;
@@ -30,6 +33,7 @@
  */
 public abstract class ListMessage extends Message {
 
+    private static final Logger log = LoggerFactory.getLogger(PeerGroup.class);
     private long arrayLen;
     // For some reason the compiler complains if this is inside InventoryItem
     protected List<InventoryItem> items;
@@ -99,7 +103,13 @@ protected void parse() throws ProtocolException {
                     type = InventoryItem.Type.FilteredBlock;
                     break;
                 default:
-                    throw new ProtocolException("Unknown CInv type: " + typeCode);
+                    //
+                    // Allow other inventory types for some coins.
+                    //
+                    if (!params.allowMoreInventoryTypes())
+                        throw new ProtocolException("Unknown CInv type: " + typeCode);
+                    //log.info("Unknown CInv type: " + typeCode);
+                    continue;
             }
             InventoryItem item = new InventoryItem(type, readHash());
             items.add(item);

core/src/main/java/org/bitcoinj/core/NetworkParameters.java

@@ -539,4 +539,7 @@ public int getBitcoinProtocolVersion() {
             return bitcoinProtocol;
         }
     }
+
+    public boolean allowMoreInventoryTypes() { return false; }
+    public boolean allowMoreMessages() { return false;}
 }