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/*
This file is part of cpp-ethereum.
cpp-ethereum 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 3 of the License, or
(at your option) any later version.
cpp-ethereum 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 cpp-ethereum. If not, see <http://www.gnu.org/licenses/>.
*/
/** @file RLPXFrameReader.h
* @author Alex Leverington <nessence@gmail.com>
* @date 2015
*/
#pragma once
#include <libdevcore/Guards.h>
#include "RLPXFrameCoder.h"
#include "RLPXPacket.h"
namespace ba = boost::asio;
namespace bi = boost::asio::ip;
namespace dev
{
namespace p2p
{
/**
* RLPFrameReader
* Reads and assembles RLPX frame byte buffers into RLPX packets. Additionally
* buffers incomplete packets which are pieced into multiple frames (has sequence).
*/
class RLPXFrameReader
{
public:
RLPXFrameReader(uint16_t _protocolType): m_protocolType(_protocolType) {}
/// Processes a single frame returning complete packets.
std::vector<RLPXPacket> demux(RLPXFrameCoder& _coder, RLPXFrameInfo const& _info, bytesRef _frame);
protected:
uint16_t m_protocolType;
std::map<uint16_t, std::pair<RLPXPacket, uint32_t>> m_incomplete; ///< Sequence: Incomplete packet and bytes remaining.
};
}
}