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+//
+// server.hpp
+// ~~~~~~~~~~
+//
+// Copyright (c) 2003-2021 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_SERVER2_SERVER_HPP
+#define HTTP_SERVER2_SERVER_HPP
+
+#include <asio.hpp>
+#include <string>
+#include <vector>
+#include <boost/noncopyable.hpp>
+#include <boost/shared_ptr.hpp>
+#include "connection.hpp"
+#include "io_context_pool.hpp"
+#include "request_handler.hpp"
+
+namespace http {
+namespace server2 {
+
+/// 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, std::size_t io_context_pool_size);
+
+ /// Run the server's io_context loop.
+ void run();
+
+private:
+ /// Initiate an asynchronous accept operation.
+ void start_accept();
+
+ /// Handle completion of an asynchronous accept operation.
+ void handle_accept(const asio::error_code& e);
+
+ /// Handle a request to stop the server.
+ void handle_stop();
+
+ /// The pool of io_context objects used to perform asynchronous operations.
+ io_context_pool io_context_pool_;
+
+ /// The signal_set is used to register for process termination notifications.
+ asio::signal_set signals_;
+
+ /// Acceptor used to listen for incoming connections.
+ asio::ip::tcp::acceptor acceptor_;
+
+ /// The next connection to be accepted.
+ connection_ptr new_connection_;
+
+ /// The handler for all incoming requests.
+ request_handler request_handler_;
+};
+
+} // namespace server2
+} // namespace http
+
+#endif // HTTP_SERVER2_SERVER_HPP