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108 lines
2.9 KiB
108 lines
2.9 KiB
/*
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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 Session.h
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* @author Gav Wood <i@gavwood.com>
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* @date 2014
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*/
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#pragma once
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#include <mutex>
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#include <array>
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#include <set>
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#include <memory>
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#include <utility>
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#include <libethential/RLP.h>
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#include "Common.h"
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namespace p2p
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{
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/**
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* @brief The Session class
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* @todo Document fully.
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*/
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class Session: public std::enable_shared_from_this<Session>
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{
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friend class Host;
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friend class HostCapabilityFace;
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public:
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Session(Host* _server, bi::tcp::socket _socket, bi::address _peerAddress, unsigned short _peerPort = 0);
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virtual ~Session();
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void start();
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void disconnect(int _reason);
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void ping();
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bool isOpen() const { return m_socket.is_open(); }
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h512 id() const { return m_id; }
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unsigned socketId() const { return m_socket.native_handle(); }
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bi::tcp::endpoint endpoint() const; ///< for other peers to connect to.
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template <class PeerCap>
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std::shared_ptr<PeerCap> cap() const { try { return std::static_pointer_cast<PeerCap>(m_capabilities.at(PeerCap::name())); } catch (...) { return nullptr; } }
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static RLPStream& prep(RLPStream& _s);
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void sealAndSend(RLPStream& _s);
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void sendDestroy(bytes& _msg);
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void send(bytesConstRef _msg);
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void addRating(unsigned _r) { m_rating += _r; }
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private:
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void dropped();
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void doRead();
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void doWrite(std::size_t length);
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void writeImpl(bytes& _buffer);
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void write();
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void getPeers();
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bool interpret(RLP const& _r);
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/// @returns true iff the _msg forms a valid message for sending or receiving on the network.
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static bool checkPacket(bytesConstRef _msg);
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Host* m_server;
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std::recursive_mutex m_writeLock;
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std::deque<bytes> m_writeQueue;
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mutable bi::tcp::socket m_socket; ///< Mutable to ask for native_handle().
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std::array<byte, 65536> m_data;
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PeerInfo m_info;
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h512 m_id;
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bytes m_incoming;
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unsigned m_protocolVersion;
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unsigned short m_listenPort; ///< Port that the remote client is listening on for connections. Useful for giving to peers.
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std::chrono::steady_clock::time_point m_ping;
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std::chrono::steady_clock::time_point m_connect;
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std::chrono::steady_clock::time_point m_disconnect;
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uint m_rating;
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std::map<std::string, std::shared_ptr<Capability>> m_capabilities;
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bool m_willBeDeleted = false; ///< True if we already posted a deleter on the strand.
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};
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}
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