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/*
Copyright (C) 2013-2015 Carl Hetherington <cth@carlh.net>
This program 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 2 of the License, or
(at your option) any later version.
This program 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 this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "server.h"
#include "signaller.h"
#include <boost/signals2.hpp>
class ServerFinder : public Signaller, public ExceptionStore
{
public:
boost::signals2::connection connect (boost::function<void (ServerDescription)>);
static ServerFinder* instance ();
static void drop ();
void disable () {
_disabled = true;
}
bool disabled () const {
return _disabled;
}
private:
ServerFinder ();
~ServerFinder ();
void broadcast_thread ();
void listen_thread ();
bool server_found (std::string) const;
void start_accept ();
void handle_accept (boost::system::error_code ec, boost::shared_ptr<Socket> socket);
boost::signals2::signal<void (ServerDescription)> ServerFound;
bool _disabled;
/** Thread to periodically issue broadcasts to find encoding servers */
boost::thread* _broadcast_thread;
/** Thread to listen to the responses from servers */
boost::thread* _listen_thread;
std::list<ServerDescription> _servers;
mutable boost::mutex _mutex;
boost::asio::io_service _listen_io_service;
boost::shared_ptr<boost::asio::ip::tcp::acceptor> _listen_acceptor;
bool _stop;
static ServerFinder* _instance;
};
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