Rename ndncatchunks to ndnget
Change-Id: I260e552746e900a73c2ce773bd91d9b6fa384734
diff --git a/tools/get/discover-version.cpp b/tools/get/discover-version.cpp
new file mode 100644
index 0000000..530e469
--- /dev/null
+++ b/tools/get/discover-version.cpp
@@ -0,0 +1,97 @@
+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
+/*
+ * Copyright (c) 2016-2025, Regents of the University of California,
+ * Colorado State University,
+ * University Pierre & Marie Curie, Sorbonne University.
+ *
+ * This file is part of ndn-tools (Named Data Networking Essential Tools).
+ * See AUTHORS.md for complete list of ndn-tools authors and contributors.
+ *
+ * ndn-tools 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.
+ *
+ * ndn-tools 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
+ * ndn-tools, e.g., in COPYING.md file. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * See AUTHORS.md for complete list of ndn-cxx authors and contributors.
+ *
+ * @author Wentao Shang
+ * @author Steve DiBenedetto
+ * @author Andrea Tosatto
+ * @author Chavoosh Ghasemi
+ */
+
+#include "discover-version.hpp"
+#include "data-fetcher.hpp"
+
+#include <ndn-cxx/metadata-object.hpp>
+
+#include <iostream>
+
+namespace ndn::get {
+
+DiscoverVersion::DiscoverVersion(Face& face, const Name& prefix, const Options& options)
+ : m_face(face)
+ , m_prefix(prefix)
+ , m_options(options)
+{
+}
+
+void
+DiscoverVersion::run()
+{
+ if (m_options.disableVersionDiscovery || (!m_prefix.empty() && m_prefix[-1].isVersion())) {
+ onDiscoverySuccess(m_prefix);
+ return;
+ }
+
+ Interest interest = MetadataObject::makeDiscoveryInterest(m_prefix)
+ .setInterestLifetime(m_options.interestLifetime);
+
+ m_fetcher = DataFetcher::fetch(m_face, interest,
+ m_options.maxRetriesOnTimeoutOrNack,
+ m_options.maxRetriesOnTimeoutOrNack,
+ FORWARD_TO_MEM_FN(handleData),
+ [this] (const auto&, const auto& reason) {
+ onDiscoveryFailure(reason);
+ },
+ [this] (const auto&, const auto& reason) {
+ onDiscoveryFailure(reason);
+ },
+ m_options.isVerbose);
+}
+
+void
+DiscoverVersion::handleData(const Interest& interest, const Data& data)
+{
+ if (m_options.isVerbose)
+ std::cerr << "Data: " << data << "\n";
+
+ // make a metadata object from received metadata packet
+ MetadataObject mobject;
+ try {
+ mobject = MetadataObject(data);
+ }
+ catch (const tlv::Error& e) {
+ onDiscoveryFailure("Invalid metadata packet: "s + e.what());
+ return;
+ }
+
+ if (mobject.getVersionedName().empty() || !mobject.getVersionedName()[-1].isVersion()) {
+ onDiscoveryFailure(mobject.getVersionedName().toUri() + " is not a valid versioned name");
+ return;
+ }
+
+ if (m_options.isVerbose) {
+ std::cerr << "Discovered Data version: " << mobject.getVersionedName()[-1] << "\n";
+ }
+
+ onDiscoverySuccess(mobject.getVersionedName());
+}
+
+} // namespace ndn::get