Improve the names command.

ProtocolLib/src/main/java/com/comphenix/protocol/CommandPacket.java

@@ -204,13 +204,17 @@ class CommandPacket implements CommandExecutor {
 					sendMessageSilently(sender, ChatColor.BLUE + "Fully removed " + count + " listeners.");
 				} else if (subCommand == SubCommand.NAMES) {
 					
+					Set<Integer> named = getNamedPackets(side);
+					
 					// Print the equivalent name of every given ID
 					for (Range<Integer> range : ranges) {
 						for (int id : range.asSet(DiscreteDomains.integers())) {
+							if (named.contains(id)) {
 								sendMessageSilently(sender, ChatColor.BLUE + "" + id + ": " + Packets.getDeclaredName(id));
 							}
 						}
 					}
+				}
 				
 			} catch (NumberFormatException e) {
 				sendMessageSilently(sender, ChatColor.RED + "Cannot parse number: " + e.getMessage());
@@ -368,6 +372,30 @@ class CommandPacket implements CommandExecutor {
 			throw new IllegalArgumentException("Illegal side: " + side);
 	}
 	
+	private Set<Integer> getNamedPackets(ConnectionSide side) {
+		
+		Set<Integer> valids = null;
+		Set<Integer> result = null;
+		
+		try {
+			valids = getValidPackets(side);
+		} catch (FieldAccessException e) {
+			valids = Ranges.closed(0, 255).asSet(DiscreteDomains.integers());
+		}
+		
+		// Check connection side
+		if (side.isForClient())
+			result = Packets.Client.getRegistry().values();
+		else if (side.isForServer())
+			result = Packets.Server.getRegistry().values();
+		else
+			throw new IllegalArgumentException("Illegal side: " + side);
+		
+		// Remove invalid packets
+		result.retainAll(valids);
+		return result;
+	}
+		
 	public DetailedPacketListener createPacketListener(final ConnectionSide side, int idStart, int idStop, final boolean detailed) {
 		
 		Set<Integer> range = Ranges.closed(idStart, idStop).asSet(DiscreteDomains.integers());

ProtocolLib/src/main/java/com/comphenix/protocol/metrics/Updater.java

@@ -12,8 +12,6 @@ import java.net.URLConnection;
 import java.util.Enumeration;
 import java.util.HashMap;
 import java.util.Map;
-import java.util.logging.Handler;
-import java.util.logging.LogRecord;
 import java.util.logging.Logger;
 import java.util.zip.ZipEntry;
 import java.util.zip.ZipFile;
@@ -22,7 +20,6 @@ import javax.xml.stream.XMLInputFactory;
 import javax.xml.stream.XMLStreamException;
 import javax.xml.stream.events.XMLEvent;
 
-import org.bukkit.Server;
 import org.bukkit.configuration.file.YamlConfiguration;
 import org.bukkit.plugin.Plugin;
 

ProtocolLib/src/main/java/com/comphenix/protocol/reflect/IntEnum.java

@@ -18,6 +18,7 @@
 package com.comphenix.protocol.reflect;
 
 import java.lang.reflect.Field;
+import java.util.HashSet;
 import java.util.Set;
 
 import com.google.common.collect.BiMap;
@@ -100,6 +101,6 @@ public class IntEnum {
 	 * @return Enumeration of every value.
 	 */
 	public Set<Integer> values() {
-		return members.keySet();
+		return new HashSet<Integer>(members.keySet());
 	}
 }