packet: expected length

src/main/java/mc/core/NetStream.java

@@ -26,4 +26,7 @@ public interface NetStream {
     int readUnsignedShort();
 
     void skipBytes(int count);
+
+    void setExpectedLength(int value);
+    int getExpectedLength();
 }

src/main/java/mc/core/netty/PacketDecoder.java

@@ -21,6 +21,7 @@ public class PacketDecoder extends ReplayingDecoder<Packet> {
         NetStream netStream = new WrapperByteBufNetStream(byteBuf);
 
         int length = netStream.readVarInt();
+        netStream.setExpectedLength(length);
         int id = netStream.readVarInt();
         log.debug("PktLEN: {} | PktID: {}", length, id);
 

src/main/java/mc/core/netty/WrapperByteBufNetStream.java

@@ -13,6 +13,7 @@ import java.nio.charset.StandardCharsets;
 @RequiredArgsConstructor
 public class WrapperByteBufNetStream implements NetStream {
     private final ByteBuf byteBuf;
+    private int length;
 
     @Override
     public byte readByte() {
@@ -128,4 +129,14 @@ public class WrapperByteBufNetStream implements NetStream {
     public void skipBytes(int count) {
         byteBuf.skipBytes(count);
     }
+
+    @Override
+    public void setExpectedLength(int value) {
+        this.length = value;
+    }
+
+    @Override
+    public int getExpectedLength() {
+        return length;
+    }
 }