Bidirectional msgpack wire protocol with unpack support

lib/msgpack/ext.go

@@ -33,11 +33,20 @@ func RegisterExt(extID int8, value interface{}) {
 			return v.Interface().(Marshaler).MarshalMsgpack()
 		})
 	} else {
+		encTyp := typ
+		if encTyp.Kind() == reflect.Ptr {
+			encTyp = encTyp.Elem()
+		}
+		structEncoder := _getEncoder(encTyp)
 		RegisterExtEncoder(extID, value, func(e *Encoder, v reflect.Value) ([]byte, error) {
 			var buf bytes.Buffer
 			enc := NewEncoder(&buf)
 			enc.UseArrayEncodedStructs(true)
-			if err := enc.Encode(v.Interface()); err != nil {
+			val := v
+			if val.Kind() == reflect.Ptr {
+				val = val.Elem()
+			}
+			if err := structEncoder(enc, val); err != nil {
 				return nil, err
 			}
 			return buf.Bytes(), nil