add basic http server (using boost.asio example)

Change-Id: I02bbc161ec7f89ade999b92ed99ef71fec83af32
diff --git a/server/server.hpp b/server/server.hpp
new file mode 100644
index 0000000..0cb3476
--- /dev/null
+++ b/server/server.hpp
@@ -0,0 +1,69 @@
+//
+// server.hpp
+// ~~~~~~~~~~
+//
+// Copyright (c) 2003-2012 Christopher M. Kohlhoff (chris at kohlhoff dot com)
+//
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+//
+
+#ifndef HTTP_SERVER_HPP
+#define HTTP_SERVER_HPP
+
+#include <boost/asio.hpp>
+#include <string>
+#include <boost/noncopyable.hpp>
+#include "connection.hpp"
+#include "connection_manager.hpp"
+#include "request_handler.hpp"
+
+namespace http {
+namespace server {
+
+/// The top-level class of the HTTP server.
+class server
+  : private boost::noncopyable
+{
+public:
+  /// Construct the server to listen on the specified TCP address and port, and
+  /// serve up files from the given directory.
+  explicit server(const std::string& address, const std::string& port,
+      const std::string& doc_root);
+
+  /// Run the server's io_service loop.
+  void run();
+
+private:
+  /// Initiate an asynchronous accept operation.
+  void start_accept();
+
+  /// Handle completion of an asynchronous accept operation.
+  void handle_accept(const boost::system::error_code& e);
+
+  /// Handle a request to stop the server.
+  void handle_stop();
+
+  /// The io_service used to perform asynchronous operations.
+  boost::asio::io_service io_service_;
+
+  /// The signal_set is used to register for process termination notifications.
+  boost::asio::signal_set signals_;
+
+  /// Acceptor used to listen for incoming connections.
+  boost::asio::ip::tcp::acceptor acceptor_;
+
+  /// The connection manager which owns all live connections.
+  connection_manager connection_manager_;
+
+  /// The next connection to be accepted.
+  connection_ptr new_connection_;
+
+  /// The handler for all incoming requests.
+  request_handler request_handler_;
+};
+
+} // namespace server
+} // namespace http
+
+#endif // HTTP_SERVER_HPP