모델 업로드 구조 완성

include/socket/packet.h

@@ -10,12 +10,25 @@ enum class Opcode : std::uint16_t {
   DESPAWNMODEL,
   UPDATEMODEL,
   REQUESTMODELIDLIST,
+  CLIENTID,
   COUNT
 };
 
 struct Header {
   Opcode opcode;
   std::uint32_t body_length;
+
+  std::vector<char> Serialize() {
+    std::vector<char> serialize(6);
+    ::memcpy(serialize.data(), &opcode, 2);
+    ::memcpy(serialize.data() + 2, &body_length, 4);
+    return serialize;
+  }
+
+  void Deserialize(std::vector<char>& data) {
+    ::memcpy(&opcode, data.data(), 2);
+    ::memcpy(&body_length, data.data() + 2, 4);
+  }
 };
 
 }  // namespace Packet