1 /* Copyright 2016, Ableton AG, Berlin. All rights reserved. 2 * 3 * This program is free software: you can redistribute it and/or modify 4 * it under the terms of the GNU General Public License as published by 5 * the Free Software Foundation, either version 2 of the License, or 6 * (at your option) any later version. 7 * 8 * This program is distributed in the hope that it will be useful, 9 * but WITHOUT ANY WARRANTY; without even the implied warranty of 10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 11 * GNU General Public License for more details. 12 * 13 * You should have received a copy of the GNU General Public License 14 * along with this program. If not, see <http://www.gnu.org/licenses/>. 15 * 16 * If you would like to incorporate Link into a proprietary software application, 17 * please contact <link-devs@ableton.com>. 18 */ 19 20 #pragma once 21 22 namespace ableton 23 { 24 namespace discovery 25 { 26 27 // Message types used in the Ableton service discovery protocol. There 28 // are two logical messages: a state dump and a bye bye. 29 // 30 // A state dump provides all relevant information about the peer's 31 // current state as well as a Time To Live (TTL) value that indicates 32 // how many seconds this state should be considered valid. 33 // 34 // The bye bye indicates that the sender is leaving the session. 35 36 template <typename NodeState> 37 struct PeerState 38 { 39 NodeState peerState; 40 int ttl; 41 }; 42 43 template <typename NodeId> 44 struct ByeBye 45 { 46 NodeId peerId; 47 }; 48 49 } // namespace discovery 50 } // namespace ableton 51