[connect] add package

src/main/hw/connect/PacketUtil.hx

@@ -0,0 +1,20 @@
+package hw.connect;
+
+import haxe.io.Bytes;
+import haxe.io.BytesOutput;
+import protohx.Message;
+
+class PacketUtil {
+
+    public static function fromBytes<P:Message>(bytes:Bytes, factory:Class<P>):P {
+        var packet:P = Type.createInstance(factory, []);
+        packet.mergeFrom(bytes);
+        return packet;
+    }
+
+    public static function toBytes<P:Message>(packet:P):Bytes {
+        var out = new BytesOutput();
+        packet.writeTo(out);
+        return out.getBytes();
+    }
+}