diff --git a/protocol/listen.go b/protocol/listen.go
new file mode 100644
index 0000000..bd56b23
--- /dev/null
+++ b/protocol/listen.go
@@ -0,0 +1,20 @@
+//    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.
+package protocol
+
+import (
+	"net"
+)
+
+func Listener(addr string) (net.Listener, error) {
+	return net.Listen("tcp", addr)
+}