Fix socket
Change-Id: I0076010933c0edd3f5a0960ca55e02e5fff809be
diff --git a/src/socket.hpp b/src/socket.hpp
new file mode 100644
index 0000000..11dc684
--- /dev/null
+++ b/src/socket.hpp
@@ -0,0 +1,158 @@
+/* -*- Mode: C++; c-file-style: "gnu"; indent-tabs-mode:nil -*- */
+/*
+ * Copyright (c) 2012-2014 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/>.
+ *
+ * @author Zhenkai Zhu <http://irl.cs.ucla.edu/~zhenkai/>
+ * @author Chaoyi Bian <bcy@pku.edu.cn>
+ * @author Alexander Afanasyev <http://lasr.cs.ucla.edu/afanasyev/index.html>
+ * @author Yingdi Yu <yingdi@cs.ucla.edu>
+ */
+
+#ifndef CHRONOSYNC_SOCKET_HPP
+#define CHRONOSYNC_SOCKET_HPP
+
+#include <ndn-cxx/face.hpp>
+#include <ndn-cxx/security/validation-request.hpp>
+
+#include "logic.hpp"
+
+namespace chronosync {
+
+/**
+ * @brief A simple interface to interact with client code
+ *
+ * Though it is called Socket, it is not a real socket. It just trying to provide
+ * a simplified interface for data publishing and fetching.
+ *
+ * This interface simplify data publishing. Client can simply dump raw data
+ * into this interface without handling the ChronoSync specific details, such
+ * as sequence number and session id.
+ *
+ * This interface also simplify data fetching. Client only needs to provide a
+ * data fetching strategy (through a updateCallback).
+ */
+class Socket : noncopyable
+{
+public:
+ class Error : public std::runtime_error
+ {
+ public:
+ explicit
+ Error(const std::string& what)
+ : std::runtime_error(what)
+ {
+ }
+ };
+
+ Socket(const Name& syncPrefix,
+ const Name& userPrefix,
+ ndn::Face& face,
+ const UpdateCallback& updateCallback);
+
+ /**
+ * @brief Publish a data packet in the session and trigger synchronization updates
+ *
+ * This method will create a data packet with the supplied content.
+ * The packet name is the local session + seqNo.
+ * The seqNo is automatically maintained by internal Logic.
+ *
+ * @param buf Pointer to the bytes in content
+ * @param len size of the bytes in content
+ * @param freshness FreshnessPeriod of the data packet.
+ */
+ void
+ publishData(const uint8_t* buf, size_t len, const ndn::time::milliseconds& freshness);
+
+ /**
+ * @brief Publish a data packet in the session and trigger synchronization updates
+ *
+ * This method will create a data packet with the supplied content.
+ * The packet name is the local session + seqNo.
+ * The seqNo is automatically maintained by internal Logic.
+ *
+ * @param content Block that will be set as the content of the data packet.
+ * @param freshness FreshnessPeriod of the data packet.
+ */
+ void
+ publishData(const Block& content, const ndn::time::milliseconds& freshness);
+
+ /**
+ * @brief Retrive a data packet with a particular seqNo from a session
+ *
+ * @param sessionName The name of the target session.
+ * @param seq The seqNo of the data packet.
+ * @param onValidated The callback when the retrieved packet has been validated.
+ * @param nRetries The number of retries.
+ */
+ void
+ fetchData(const Name& sessionName, const SeqNo& seq,
+ const ndn::OnDataValidated& onValidated,
+ int nRetries = 0);
+
+ /**
+ * @brief Retrive a data packet with a particular seqNo from a session
+ *
+ * @param sessionName The name of the target session.
+ * @param seq The seqNo of the data packet.
+ * @param onValidated The callback when the retrieved packet has been validated.
+ * @param nRetries The number of retries.
+ */
+ void
+ fetchData(const Name& sessionName, const SeqNo& seq,
+ const ndn::OnDataValidated& onValidated,
+ const ndn::OnDataValidationFailed& onValidationFailed,
+ const ndn::OnTimeout& onTimeout,
+ int nRetries = 0);
+
+ /// @brief Get the root digest of current sync tree
+ ndn::ConstBufferPtr
+ getRootDigest() const;
+
+ Logic&
+ getLogic()
+ {
+ return m_logic;
+ }
+
+private:
+ void
+ onData(const Interest& interest, Data& data,
+ const ndn::OnDataValidated& dataCallback,
+ const ndn::OnDataValidationFailed& failCallback);
+
+ void
+ onDataTimeout(const Interest& interest, int nRetries,
+ const ndn::OnDataValidated& dataCallback,
+ const ndn::OnDataValidationFailed& failCallback);
+
+ void
+ onDataValidationFailed(const shared_ptr<const Data>& data,
+ const std::string& failureInfo);
+
+private:
+
+ Name m_userPrefix;
+ ndn::Face& m_face;
+
+ Logic m_logic;
+
+ ndn::KeyChain m_keyChain;
+};
+
+} // namespace chronosync
+
+#endif // CHRONOSYNC_SOCKET_HPP