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69 lines
2.0 KiB
69 lines
2.0 KiB
10 years ago
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/*
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This file is part of cpp-ethereum.
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cpp-ethereum is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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cpp-ethereum is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with cpp-ethereum. If not, see <http://www.gnu.org/licenses/>.
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*/
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/** @file RLPXperimental.h
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* @author Alex Leverington <nessence@gmail.com>
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* @date 2015
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*/
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#pragma once
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#include <libdevcore/Guards.h>
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#include "RLPXFrameCoder.h"
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#include "RLPXPacket.h"
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namespace ba = boost::asio;
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namespace bi = boost::asio::ip;
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namespace dev
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{
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namespace p2p
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{
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class RLPXFrameWriter
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{
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struct QueueState
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{
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std::deque<RLPXPacket> q;
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RLPXPacket* writing = nullptr;
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size_t remaining = 0;
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bool sequenced = false;
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uint16_t sequence;
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mutable Mutex x;
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};
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public:
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enum PacketPriority { PriorityLow = 0, PriorityHigh };
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RLPXFrameWriter(uint16_t _protocolType): m_protocolType(_protocolType) {}
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RLPXFrameWriter(RLPXFrameWriter const& _s): m_protocolType(_s.m_protocolType) {}
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size_t size() const { size_t l; size_t h; DEV_GUARDED(m_q.first.x) h = m_q.first.q.size(); DEV_GUARDED(m_q.second.x) l = m_q.second.q.size(); return l + h; }
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/// Thread-safe.
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void enque(unsigned _packetType, RLPStream& _payload, PacketPriority _priority = PriorityLow);
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/// Returns number of packets framed and outputs frames to o_bytes. Not thread-safe.
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size_t drain(RLPXFrameCoder& _coder, unsigned _size, std::vector<bytes>& o_toWrite);
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private:
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uint16_t const m_protocolType; // Protocol Type
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std::pair<QueueState, QueueState> m_q; // High, Low frame queues
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uint16_t m_sequenceId = 0; // Sequence ID
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};
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}
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}
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