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85 lines
2.4 KiB
85 lines
2.4 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 HostCapability.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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* Miscellanea required for the Host/Session classes.
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*/
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#pragma once
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#include "Peer.h"
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#include "Common.h"
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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 HostCapabilityFace
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{
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friend class Host;
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template <class T> friend class HostCapability;
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friend class Capability;
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friend class Session;
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public:
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HostCapabilityFace() {}
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virtual ~HostCapabilityFace() {}
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Host* host() const { return m_host; }
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std::vector<std::pair<std::shared_ptr<Session>, std::shared_ptr<Peer>>> peerSessions() const;
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std::vector<std::pair<std::shared_ptr<Session>, std::shared_ptr<Peer>>> peerSessions(u256 const& _version) const;
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protected:
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virtual std::string name() const = 0;
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virtual u256 version() const = 0;
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CapDesc capDesc() const { return std::make_pair(name(), version()); }
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virtual unsigned messageCount() const = 0;
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virtual Capability* newPeerCapability(std::shared_ptr<Session> _s, unsigned _idOffset, CapDesc const& _cap) = 0;
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virtual void onStarting() {}
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virtual void onStopping() {}
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private:
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Host* m_host = nullptr;
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};
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template<class PeerCap>
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class HostCapability: public HostCapabilityFace
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{
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public:
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HostCapability() {}
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virtual ~HostCapability() {}
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static std::string staticName() { return PeerCap::name(); }
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static u256 staticVersion() { return PeerCap::version(); }
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static unsigned staticMessageCount() { return PeerCap::messageCount(); }
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protected:
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virtual std::string name() const { return PeerCap::name(); }
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virtual u256 version() const { return PeerCap::version(); }
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virtual unsigned messageCount() const { return PeerCap::messageCount(); }
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virtual Capability* newPeerCapability(std::shared_ptr<Session> _s, unsigned _idOffset, CapDesc const& _cap) { return new PeerCap(_s, this, _idOffset, _cap); }
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};
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}
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}
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