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diff --git a/hicn-light/src/messenger/messenger.h b/hicn-light/src/messenger/messenger.h
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+/*
+ * 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.
+ */
+
+/**
+ * The EventMessenger is the system that messages events between
+ * producers and consumers.
+ *
+ * Events are delivered in a deferred event cycle to avoid event callbacks
+ * firing when the event generator is still running.
+ */
+
+#ifndef messenger_h
+#define messenger_h
+
+#include <src/core/dispatcher.h>
+#include <src/messenger/messengerRecipient.h>
+#include <src/messenger/missive.h>
+
+struct messenger;
+typedef struct messenger Messenger;
+
+/**
+ * @function eventmessenger_Create
+ * @abstract Creates an event notification system
+ * @discussion
+ *   Typically there's only one of these managed by forwarder.
+ *
+ * @param dispatcher is the event dispatcher to use to schedule events.
+ */
+Messenger *messenger_Create(Dispatcher *dispatcher);
+
+/**
+ * @function eventMessenger_Destroy
+ * @abstract Destroys the messenger system, no notification is sent
+ */
+void messenger_Destroy(Messenger **messengerPtr);
+
+/**
+ * @function eventMessenger_Send
+ * @abstract Send an event message, takes ownership of the event memory
+ */
+void messenger_Send(Messenger *messenger, Missive *missive);
+
+/**
+ * @function eventMessenger_Register
+ * @abstract Receive all event messages
+ */
+void messenger_Register(Messenger *messenger,
+                        const MessengerRecipient *recipient);
+
+/**
+ * @function eventMessenger_Unregister
+ * @abstract Stop receiving event messages
+ */
+void messenger_Unregister(Messenger *messenger,
+                          const MessengerRecipient *recipient);
+#endif  // messenger_h