diff --git a/afrouter/afrouter/helpers.go b/afrouter/afrouter/helpers.go
new file mode 100644
index 0000000..04d5878
--- /dev/null
+++ b/afrouter/afrouter/helpers.go
@@ -0,0 +1,27 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+
+ * http://www.apache.org/licenses/LICENSE-2.0
+
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+// gRPC affinity router with active/active backends
+
+package afrouter
+
+func strIndex(ar []string, match string) int {
+	for idx := range(ar) {
+		if ar[idx] == match {
+			return idx
+		}
+	}
+	return 0
+}