diff --git a/src/segment-publisher.hpp b/src/segment-publisher.hpp
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+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
+/*
+ * Copyright (c) 2014-2018,  The University of Memphis
+ *
+ * This file is part of PSync.
+ * See AUTHORS.md for complete list of PSync authors and contributors.
+ *
+ * PSync is free software: you can redistribute it and/or modify it under the terms
+ * of the GNU General Public License as published by the Free Software Foundation,
+ * either version 3 of the License, or (at your option) any later version.
+ *
+ * PSync is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
+ * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+ * PURPOSE.  See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * PSync, e.g., in COPYING.md file.  If not, see <http://www.gnu.org/licenses/>.
+ **/
+
+#ifndef PSYNC_SEGMENT_PUBLISHER_HPP
+#define PSYNC_SEGMENT_PUBLISHER_HPP
+
+#include "detail/test-access-control.hpp"
+
+#include <ndn-cxx/face.hpp>
+#include <ndn-cxx/name.hpp>
+#include <ndn-cxx/security/key-chain.hpp>
+#include <ndn-cxx/util/scheduler-scoped-event-id.hpp>
+#include <ndn-cxx/util/scheduler.hpp>
+#include <ndn-cxx/util/time.hpp>
+#include <ndn-cxx/ims/in-memory-storage-fifo.hpp>
+
+namespace psync {
+
+const int MAX_SEGMENTS_STORED = 100;
+
+/**
+ * @brief Segment Publisher to publish segmented data
+ *
+ */
+class SegmentPublisher
+{
+public:
+  SegmentPublisher(ndn::Face& face, ndn::KeyChain& keyChain,
+                   size_t imsLimit = MAX_SEGMENTS_STORED);
+
+  /**
+   * @brief Put all the segments in memory.
+   *
+   * @param interestName the interest name, to determine the sequence to be answered immediately
+   * @param dataName the data name, has components after interest name
+   * @param block the content of the data
+   * @param freshness freshness of the segments
+   */
+  void
+  publish(const ndn::Name& interestName, const ndn::Name& dataName,
+          const ndn::Block& block, ndn::time::milliseconds freshness);
+
+  /**
+   * @brief Try to reply from memory, return false if we cannot find the segment.
+   *
+   * The caller is then expected to use publish if this returns false.
+   */
+  bool
+  replyFromStore(const ndn::Name& interestName);
+
+private:
+  ndn::Face& m_face;
+  ndn::util::Scheduler m_scheduler;
+  ndn::KeyChain& m_keyChain;
+
+PUBLIC_WITH_TESTS_ELSE_PRIVATE:
+  ndn::InMemoryStorageFifo m_ims;
+};
+
+} // namespace psync
+
+#endif // PSYNC_SEGMENT_PUBLISHER_HPP
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