feat: impl. new protol design & new head

gold/proto/data.go

@@ -0,0 +1,14 @@
+package proto
+
+import (
+	"github.com/fumiama/orbyte/pbuf"
+
+	"github.com/fumiama/WireGold/gold/head"
+	"github.com/fumiama/WireGold/gold/link"
+)
+
+func init() {
+	link.AddProto(head.ProtoData, func(header *head.Packet, peer *link.Link, data pbuf.Bytes) {
+		peer.ToLower(header, data)
+	})
+}