diff --git a/proxy/repeats.go b/proxy/repeats.go
new file mode 100644
index 0000000..a527648
--- /dev/null
+++ b/proxy/repeats.go
@@ -0,0 +1,9 @@
+package proxy
+
+type RepeatGenerator interface {
+	Generate() []byte
+}
+
+type RepeatVerifier interface {
+	Verify(in []byte) error
+}