correct Ping

src/main/java/mc/core/netty/handlers/HandshakeHandler.java

@@ -10,6 +10,7 @@ import mc.core.netty.EventBus;
 import mc.core.netty.State;
 import mc.core.netty.packets.HandshakeRequestPacket;
 import mc.core.netty.packets.HandshakeResponsePacket;
+import mc.core.netty.packets.PingPacket;
 
 @Slf4j
 public class HandshakeHandler implements EventBus.Listener {
@@ -18,4 +19,9 @@ public class HandshakeHandler implements EventBus.Listener {
         channel.attr(State.ATTR_STATE).set(packet.getNextState());
         channel.writeAndFlush(new HandshakeResponsePacket());
     }
+
+    @EventBus.EventHandler(State.Handshaking)
+    public void onPing(PingPacket packet, Channel channel) {
+        channel.writeAndFlush(packet);
+    }
 }

src/main/java/mc/core/netty/packets/PingPacket.java

@@ -7,13 +7,13 @@ package mc.core.netty.packets;
 import lombok.ToString;
 import mc.core.NetStream;
 import mc.core.Packet;
-
-import static mc.core.netty.Utils.*;
+import mc.core.netty.Utils;
 
 @ToString
 public class PingPacket implements Packet {
     private static final int id = 1;
-    private long payload;
+    private static final int lenId = Utils.lengthVarInt(id);
+    private byte[] rawdata;
     private int size;
 
     @Override
@@ -28,18 +28,15 @@ public class PingPacket implements Packet {
 
     @Override
     public void readSelf(NetStream netStream) {
-        payload = netStream.readVarLong();
-        size = lengthVarInt(id)
-                + lengthVarLong(payload);
+        rawdata = new byte[netStream.getExpectedLength() - lenId];
+        netStream.readBytes(rawdata);
+        size = lenId + rawdata.length;
     }
 
     @Override
     public void writeSelf(NetStream netStream) {
-        long payload = System.currentTimeMillis();
-        int size = lengthVarLong(payload);
-
         netStream.writeVarInt(size);
         netStream.writeVarInt(id);
-        netStream.writeVarLong(payload);
+        netStream.writeBytes(rawdata);
     }
 }