X-Git-Url: https://main.carlh.net/gitweb/?a=blobdiff_plain;f=src%2Flib%2Fserver_finder.cc;h=3eec6597b55df1d92125b1785ad2998a104adb33;hb=ddef0fb991ee50275e801c0cd813b7d74ead6ddf;hp=de90e0d5c1380ee85d6429bf8c591f94c9f95dc6;hpb=2af7c2d9d839fb43d96e1373deff2c68721e425f;p=dcpomatic.git diff --git a/src/lib/server_finder.cc b/src/lib/server_finder.cc index de90e0d5c..3eec6597b 100644 --- a/src/lib/server_finder.cc +++ b/src/lib/server_finder.cc @@ -1,5 +1,5 @@ /* - Copyright (C) 2013 Carl Hetherington + Copyright (C) 2013-2015 Carl Hetherington 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 @@ -17,36 +17,53 @@ */ -#include #include "server_finder.h" #include "exceptions.h" #include "util.h" #include "config.h" #include "cross.h" -#include "ui_signaller.h" +#include "dcpomatic_socket.h" +#include "raw_convert.h" +#include +#include + +#include "i18n.h" using std::string; -using std::stringstream; using std::list; using std::vector; using std::cout; using boost::shared_ptr; using boost::scoped_array; -using boost::lexical_cast; +using boost::weak_ptr; ServerFinder* ServerFinder::_instance = 0; ServerFinder::ServerFinder () : _disabled (false) - , _broadcast_thread (0) + , _search_thread (0) , _listen_thread (0) + , _stop (false) { - _broadcast_thread = new boost::thread (boost::bind (&ServerFinder::broadcast_thread, this)); + _search_thread = new boost::thread (boost::bind (&ServerFinder::search_thread, this)); _listen_thread = new boost::thread (boost::bind (&ServerFinder::listen_thread, this)); + Config::instance()->Changed.connect (boost::bind (&ServerFinder::config_changed, this, _1)); +} + +ServerFinder::~ServerFinder () +{ + _stop = true; + + _search_condition.notify_all (); + _search_thread->join (); + + _listen_io_service.stop (); + _listen_thread->join (); } void -ServerFinder::broadcast_thread () +ServerFinder::search_thread () +try { boost::system::error_code error; boost::asio::io_service io_service; @@ -60,12 +77,16 @@ ServerFinder::broadcast_thread () socket.set_option (boost::asio::socket_base::broadcast (true)); string const data = DCPOMATIC_HELLO; - - while (1) { + + while (!_stop) { if (Config::instance()->use_any_servers ()) { /* Broadcast to look for servers */ - boost::asio::ip::udp::endpoint end_point (boost::asio::ip::address_v4::broadcast(), Config::instance()->server_port_base() + 1); - socket.send_to (boost::asio::buffer (data.c_str(), data.size() + 1), end_point); + try { + boost::asio::ip::udp::endpoint end_point (boost::asio::ip::address_v4::broadcast(), Config::instance()->server_port_base() + 1); + socket.send_to (boost::asio::buffer (data.c_str(), data.size() + 1), end_point); + } catch (...) { + + } } /* Query our `definite' servers (if there are any) */ @@ -77,45 +98,82 @@ ServerFinder::broadcast_thread () } try { boost::asio::ip::udp::resolver resolver (io_service); - boost::asio::ip::udp::resolver::query query (*i, lexical_cast (Config::instance()->server_port_base() + 1)); + boost::asio::ip::udp::resolver::query query (*i, raw_convert (Config::instance()->server_port_base() + 1)); boost::asio::ip::udp::endpoint end_point (*resolver.resolve (query)); socket.send_to (boost::asio::buffer (data.c_str(), data.size() + 1), end_point); } catch (...) { } } - - dcpomatic_sleep (10); + + boost::mutex::scoped_lock lm (_search_condition_mutex); + _search_condition.timed_wait (lm, boost::get_system_time() + boost::posix_time::seconds (10)); } } +catch (...) +{ + store_current (); +} void ServerFinder::listen_thread () +try { + using namespace boost::asio::ip; + + try { + _listen_acceptor.reset (new tcp::acceptor (_listen_io_service, tcp::endpoint (tcp::v4(), Config::instance()->server_port_base() + 1))); + } catch (...) { + boost::throw_exception (NetworkError (_("Could not listen for remote encode servers. Perhaps another instance of DCP-o-matic is running."))); + } + + start_accept (); + _listen_io_service.run (); +} +catch (...) { - while (1) { - shared_ptr sock (new Socket (10)); + store_current (); +} - try { - sock->accept (Config::instance()->server_port_base() + 1); - } catch (std::exception& e) { - continue; - } +void +ServerFinder::start_accept () +{ + shared_ptr socket (new Socket ()); + _listen_acceptor->async_accept ( + socket->socket(), + boost::bind (&ServerFinder::handle_accept, this, boost::asio::placeholders::error, socket) + ); +} + +void +ServerFinder::handle_accept (boost::system::error_code ec, shared_ptr socket) +{ + if (ec) { + start_accept (); + return; + } - uint32_t length = sock->read_uint32 (); - scoped_array buffer (new char[length]); - sock->read (reinterpret_cast (buffer.get()), length); - - stringstream s (buffer.get()); - shared_ptr xml (new cxml::Document ("ServerAvailable")); - xml->read_stream (s); - - string const ip = sock->socket().remote_endpoint().address().to_string (); - if (!server_found (ip)) { - ServerDescription sd (ip, xml->number_child ("Threads")); + uint32_t length; + socket->read (reinterpret_cast (&length), sizeof (uint32_t)); + length = ntohl (length); + + scoped_array buffer (new char[length]); + socket->read (reinterpret_cast (buffer.get()), length); + + string s (buffer.get()); + shared_ptr xml (new cxml::Document ("ServerAvailable")); + xml->read_string (s); + + string const ip = socket->socket().remote_endpoint().address().to_string (); + if (!server_found (ip) && xml->optional_number_child("Version").get_value_or (0) == SERVER_LINK_VERSION) { + ServerDescription sd (ip, xml->number_child ("Threads")); + { + boost::mutex::scoped_lock lm (_mutex); _servers.push_back (sd); - ui_signaller->emit (boost::bind (boost::ref (ServerFound), sd)); } + emit (boost::bind (boost::ref (ServersListChanged))); } + + start_accept (); } bool @@ -130,23 +188,6 @@ ServerFinder::server_found (string ip) const return i != _servers.end (); } -void -ServerFinder::connect (boost::function fn) -{ - if (_disabled) { - return; - } - - boost::mutex::scoped_lock lm (_mutex); - - /* Emit the current list of servers */ - for (list::iterator i = _servers.begin(); i != _servers.end(); ++i) { - fn (*i); - } - - ServerFound.connect (fn); -} - ServerFinder* ServerFinder::instance () { @@ -157,5 +198,35 @@ ServerFinder::instance () return _instance; } - - +void +ServerFinder::drop () +{ + delete _instance; + _instance = 0; +} + +list +ServerFinder::servers () const +{ + boost::mutex::scoped_lock lm (_mutex); + return _servers; +} + +void +ServerFinder::config_changed (Config::Property what) +{ + if (what == Config::USE_ANY_SERVERS || what == Config::SERVERS) { + { + boost::mutex::scoped_lock lm (_mutex); + _servers.clear (); + } + ServersListChanged (); + search_now (); + } +} + +void +ServerFinder::search_now () +{ + _search_condition.notify_all (); +}