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/*
Copyright (C) 2020-2021 Carl Hetherington <cth@carlh.net>
This file is part of DCP-o-matic.
DCP-o-matic 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.
DCP-o-matic 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 DCP-o-matic. If not, see <http://www.gnu.org/licenses/>.
*/
#include <string>
#include <list>
#include <boost/optional.hpp>
class Nanomsg
{
public:
explicit Nanomsg (bool server);
~Nanomsg ();
Nanomsg (Nanomsg const&) = delete;
Nanomsg& operator= (Nanomsg const&) = delete;
/** Try to send a message, waiting for some timeout before giving up.
* @param timeout Timeout in milliseconds, or -1 for infinite timeout.
* @return true if the send happened, false if there was a timeout.
*/
bool send (std::string s, int timeout);
/** Try to receive a message, waiting for some timeout before giving up.
* @param timeout Timeout in milliseconds, or -1 for infinite timeout.
* @return Empty if the timeout was reached, otherwise the received string.
*/
boost::optional<std::string> receive (int timeout);
private:
boost::optional<std::string> get_from_pending ();
void recv_and_parse (int flags);
int _socket;
int _endpoint;
std::list<std::string> _pending;
std::string _current;
};
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