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82 lines
2.5 KiB
82 lines
2.5 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 WhisperHost.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 <libdevcore/RLP.h>
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#include <libdevcore/Guards.h>
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#include <libdevcrypto/SHA3.h>
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#include "Common.h"
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#include "WhisperPeer.h"
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#include "Interface.h"
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namespace dev
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{
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namespace shh
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{
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class WhisperHost: public HostCapability<WhisperPeer>, public Interface
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{
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friend class WhisperPeer;
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public:
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WhisperHost();
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virtual ~WhisperHost();
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unsigned protocolVersion() const { return 0; }
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virtual void inject(Envelope const& _e, WhisperPeer* _from = nullptr) override;
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using Interface::installWatch;
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virtual unsigned installWatch(TopicFilter const& _filter) override;
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virtual unsigned installWatchOnId(h256 _filterId) override;
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virtual void uninstallWatch(unsigned _watchId) override;
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virtual h256s peekWatch(unsigned _watchId) const override { dev::Guard l(m_filterLock); try { return m_watches.at(_watchId).changes; } catch (...) { return h256s(); } }
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virtual h256s checkWatch(unsigned _watchId) override { cleanup(); dev::Guard l(m_filterLock); h256s ret; try { ret = m_watches.at(_watchId).changes; m_watches.at(_watchId).changes.clear(); } catch (...) {} return ret; }
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virtual h256s watchMessages(unsigned _watchId) override;
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virtual Envelope envelope(h256 _m) const override { try { dev::ReadGuard l(x_messages); return m_messages.at(_m); } catch (...) { return Envelope(); } }
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std::map<h256, Envelope> all() const { ReadGuard l(x_messages); return m_messages; }
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void cleanup();
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private:
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void streamMessage(h256 _m, RLPStream& _s) const;
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void noteChanged(h256 _messageHash, h256 _filter);
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mutable dev::SharedMutex x_messages;
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std::map<h256, Envelope> m_messages;
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std::map<unsigned, h256> m_expiryQueue;
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mutable dev::Mutex m_filterLock;
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std::map<h256, InstalledFilter> m_filters;
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std::map<unsigned, ClientWatch> m_watches;
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};
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}
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}
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