2 Copyright (C) 2013-2015 Carl Hetherington <cth@carlh.net>
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 #include "signaller.h"
21 #include "server_description.h"
23 #include "exception_store.h"
24 #include <boost/signals2.hpp>
25 #include <boost/thread/condition.hpp>
29 class ServerFinder : public Signaller, public ExceptionStore
32 static ServerFinder* instance ();
39 bool disabled () const {
43 std::list<ServerDescription> servers () const;
45 /** Emitted whenever the list of servers changes */
46 boost::signals2::signal<void ()> ServersListChanged;
52 void search_thread ();
53 void listen_thread ();
55 bool server_found (std::string) const;
57 void handle_accept (boost::system::error_code ec, boost::shared_ptr<Socket> socket);
59 void config_changed (Config::Property what);
64 /** Thread to periodically issue broadcasts and requests to find encoding servers */
65 boost::thread* _search_thread;
66 /** Thread to listen to the responses from servers */
67 boost::thread* _listen_thread;
69 std::list<ServerDescription> _servers;
70 mutable boost::mutex _mutex;
72 boost::asio::io_service _listen_io_service;
73 boost::shared_ptr<boost::asio::ip::tcp::acceptor> _listen_acceptor;
76 boost::condition _search_condition;
77 boost::mutex _search_condition_mutex;
79 static ServerFinder* _instance;