diff --git a/cpp/protoutils.cc b/cpp/protoutils.cc
index 5459715..4c4c6d8 100644
--- a/cpp/protoutils.cc
+++ b/cpp/protoutils.cc
@@ -23,6 +23,14 @@ namespace f8
         return hdr;
     }
 
+    void MsgHdr::Destroy(MsgHdr* hdr)
+    {
+        if (hdr->buf) {
+            free((void*)hdr->buf);
+        }
+        free((void*)hdr);
+    }
+
     int Net_GetMessageId(::google::protobuf::Message& msg)
     {
         std::string msgname;
diff --git a/cpp/protoutils.h b/cpp/protoutils.h
index 859e578..9902cc7 100644
--- a/cpp/protoutils.h
+++ b/cpp/protoutils.h
@@ -94,6 +94,7 @@ namespace f8
         const void* user_data = nullptr;
 
         MsgHdr* Clone();
+        static void Destroy(MsgHdr* hdr);
     };
 
     #ifdef MATCHVS