You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
 
 
 
 
 

85 lines
2.2 KiB

/*
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 HostCapability.h
* @author Gav Wood <i@gavwood.com>
* @date 2014
*
* Miscellanea required for the Host/Session classes.
*/
#pragma once
#include "Common.h"
namespace dev
{
namespace p2p
{
class HostCapabilityFace
{
friend class Host;
template <class T> friend class HostCapability;
friend class Capability;
friend class Session;
public:
HostCapabilityFace() {}
virtual ~HostCapabilityFace() {}
Host* host() const { return m_host; }
std::vector<std::shared_ptr<Session> > peers() const;
protected:
virtual std::string name() const = 0;
virtual u256 version() const = 0;
CapDesc capDesc() const { return std::make_pair(name(), version()); }
virtual unsigned messageCount() const = 0;
virtual Capability* newPeerCapability(Session* _s, unsigned _idOffset) = 0;
virtual void onStarting() {}
virtual void onStopping() {}
void seal(bytes& _b);
private:
Host* m_host = nullptr;
};
template<class PeerCap>
class HostCapability: public HostCapabilityFace
{
public:
HostCapability() {}
virtual ~HostCapability() {}
static std::string staticName() { return PeerCap::name(); }
static u256 staticVersion() { return PeerCap::version(); }
static unsigned staticMessageCount() { return PeerCap::messageCount(); }
protected:
virtual std::string name() const { return PeerCap::name(); }
virtual u256 version() const { return PeerCap::version(); }
virtual unsigned messageCount() const { return PeerCap::messageCount(); }
virtual Capability* newPeerCapability(Session* _s, unsigned _idOffset) { return new PeerCap(_s, this, _idOffset); }
};
}
}