1 files changed, 26 insertions, 0 deletions
diff --git a/libtransport/src/interfaces/callbacks.cc b/libtransport/src/interfaces/callbacks.cc
new file mode 100644
index 000000000..6869ac3f7
--- /dev/null
+++ b/libtransport/src/interfaces/callbacks.cc
@@ -0,0 +1,26 @@
+/*
+ * Copyright (c) 2017-2019 Cisco and/or its affiliates.
+ * 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.
+ */
+
+#include <hicn/transport/interfaces/callbacks.h>
+
+namespace transport {
+
+namespace interface {
+
+std::nullptr_t VOID_HANDLER = nullptr;
+
+}  // namespace interface
+
+}  // namespace transport
+\ No newline at end of file