**Breaking change** Use bzip2 compression of sync data payload
Change-Id: I0a322e3268a5adc9d221c23c43fc6899c9dbf836
Refs: #4140
diff --git a/src/bzip2-helper.cpp b/src/bzip2-helper.cpp
new file mode 100644
index 0000000..527c4f4
--- /dev/null
+++ b/src/bzip2-helper.cpp
@@ -0,0 +1,59 @@
+/* -*- Mode: C++; c-file-style: "gnu"; indent-tabs-mode:nil -*- */
+/*
+ * Copyright (c) 2012-2018 University of California, Los Angeles
+ *
+ * This file is part of ChronoSync, synchronization library for distributed realtime
+ * applications for NDN.
+ *
+ * ChronoSync 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.
+ *
+ * ChronoSync 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
+ * ChronoSync, e.g., in COPYING.md file. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "bzip2-helper.hpp"
+
+#include <boost/iostreams/filtering_stream.hpp>
+#include <boost/iostreams/detail/iostream.hpp>
+#include <boost/iostreams/filter/bzip2.hpp>
+#include <boost/iostreams/copy.hpp>
+
+#include <ndn-cxx/encoding/buffer-stream.hpp>
+
+namespace chronosync {
+namespace bzip2 {
+
+namespace bio = boost::iostreams;
+
+std::shared_ptr<ndn::Buffer>
+compress(const char* buffer, size_t bufferSize)
+{
+ ndn::OBufferStream os;
+ bio::filtering_stream<bio::output> out;
+ out.push(bio::bzip2_compressor());
+ out.push(os);
+ bio::stream<bio::array_source> in(reinterpret_cast<const char*>(buffer), bufferSize);
+ bio::copy(in, out);
+ return os.buf();
+}
+
+std::shared_ptr<ndn::Buffer>
+decompress(const char* buffer, size_t bufferSize)
+{
+ ndn::OBufferStream os;
+ bio::filtering_stream<bio::output> out;
+ out.push(bio::bzip2_decompressor());
+ out.push(os);
+ bio::stream<bio::array_source> in(reinterpret_cast<const char*>(buffer), bufferSize);
+ bio::copy(in, out);
+ return os.buf();
+}
+
+} // namespace bzip2
+} // namespace chronosync