89 lines
2.6 KiB
C++
89 lines
2.6 KiB
C++
/*
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sdt/session.h
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Copyright (c) 2021 Kevin Matz (kevin.matz@gmail.com)
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.
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*/
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#pragma once
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#include "channel.h"
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#include "sdt.h"
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#include <memory>
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#include <unordered_map>
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namespace ACN::SDT {
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/**
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* @brief 3.1 Session Identity
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*/
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struct SessionId {
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UUID::uuid cid; //!< the component ID (CID) of the session leader
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uint16_t number; //!< the session number the leader has assigned
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uint32_t protocol; //!< the ID of the protocol carried by the session
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bool operator== (const SessionId &) const;
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};
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/**
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* @brief The Session class
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* A session has a single leader and zero or more session members. The leader
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* communicates to members using the downstream address. Members respond to
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* the leader on the upstream address. A unique session identifier identifies
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* a session.
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*/
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class Session {
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public:
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Session();
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~Session();
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SessionId id();
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// 4.4 SDT Base Layer Messages (non ad-hoc)
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void join_accept();
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void join_refuse();
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void leaving();
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void nak();
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void reliable_wrapper();
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void unreliable_wrapper();
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// 4.5 SDT Wrapped Messages
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void ack();
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void channel_params();
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void leave();
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void connect();
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void connect_accept();
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void connect_refuse();
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void disconnect();
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void disconnecting();
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protected:
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std::shared_ptr<ACN::Component> leader; //!< session leader
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std::shared_ptr<Channel> downstream; //!< downstram channel
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std::unordered_map<MID, std::shared_ptr<Channel>> upstream; //!< upstream channel
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private:
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uint16_t number_;
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uint32_t protocol_;
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MID next_id_ = 1;
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};
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} // namespace ACN::SDT
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