88b0385bfe
If the caller knows the difficulty of a PoW hash a given nonce yields, it can tell the callee via the X-Hash-Difficulty, which may allow the callee to skip some processing if the difficulty does not meet some criterion. In my case, a merge mining proxy can know it's pointless trying to submit the nonce to a chain with higher difficulty when the nonce only meets the difficulty for a lower difficulty chain.
151 lines
5 KiB
C++
151 lines
5 KiB
C++
/* XMRig
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* Copyright (c) 2019 Howard Chu <https://github.com/hyc>
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* Copyright (c) 2018-2021 SChernykh <https://github.com/SChernykh>
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* Copyright (c) 2016-2021 XMRig <https://github.com/xmrig>, <support@xmrig.com>
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*
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* This program 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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*
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* This program 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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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef XMRIG_DAEMONCLIENT_H
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#define XMRIG_DAEMONCLIENT_H
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#include "base/kernel/interfaces/IDnsListener.h"
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#include "base/kernel/interfaces/IHttpListener.h"
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#include "base/kernel/interfaces/ITimerListener.h"
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#include "base/net/stratum/BaseClient.h"
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#include "base/net/tools/Storage.h"
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#include "base/tools/cryptonote/BlockTemplate.h"
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#include "base/tools/cryptonote/WalletAddress.h"
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#include <memory>
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using uv_buf_t = struct uv_buf_t;
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using uv_connect_t = struct uv_connect_s;
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using uv_handle_t = struct uv_handle_s;
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using uv_stream_t = struct uv_stream_s;
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using uv_tcp_t = struct uv_tcp_s;
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#ifdef XMRIG_FEATURE_TLS
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using BIO = struct bio_st;
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using SSL = struct ssl_st;
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using SSL_CTX = struct ssl_ctx_st;
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#endif
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namespace xmrig {
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class DnsRequest;
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class DaemonClient : public BaseClient, public IDnsListener, public ITimerListener, public IHttpListener
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{
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public:
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XMRIG_DISABLE_COPY_MOVE_DEFAULT(DaemonClient)
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DaemonClient(int id, IClientListener *listener);
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~DaemonClient() override;
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protected:
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bool disconnect() override;
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bool isTLS() const override;
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int64_t submit(const JobResult &result) override;
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void connect() override;
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void connect(const Pool &pool) override;
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void setPool(const Pool &pool) override;
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void onHttpData(const HttpData &data) override;
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void onTimer(const Timer *timer) override;
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void onResolved(const DnsRecords &records, int status, const char* error) override;
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inline bool hasExtension(Extension) const noexcept override { return false; }
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inline const char *mode() const override { return "daemon"; }
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inline const char *tlsFingerprint() const override { return m_tlsFingerprint; }
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inline const char *tlsVersion() const override { return m_tlsVersion; }
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inline int64_t send(const rapidjson::Value &, Callback) override { return -1; }
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inline int64_t send(const rapidjson::Value &) override { return -1; }
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void deleteLater() override;
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inline void tick(uint64_t) override {}
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private:
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bool isOutdated(uint64_t height, const char *hash) const;
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bool parseJob(const rapidjson::Value ¶ms, int *code);
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bool parseResponse(int64_t id, const rapidjson::Value &result, const rapidjson::Value &error);
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int64_t getBlockTemplate();
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int64_t rpcSend(const rapidjson::Document &doc, const std::map<std::string, std::string> &headers = {});
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void retry();
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void send(const char *path);
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void setState(SocketState state);
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enum {
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API_CRYPTONOTE_DEFAULT,
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API_MONERO,
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} m_apiVersion = API_MONERO;
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BlockTemplate m_blocktemplate;
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Coin m_coin;
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std::shared_ptr<IHttpListener> m_httpListener;
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String m_blockhashingblob;
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String m_blocktemplateRequestHash;
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String m_blocktemplateStr;
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String m_currentJobId;
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String m_prevHash;
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uint64_t m_jobSteadyMs = 0;
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String m_tlsFingerprint;
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String m_tlsVersion;
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Timer *m_timer;
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uint64_t m_blocktemplateRequestHeight = 0;
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WalletAddress m_walletAddress;
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private:
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static inline DaemonClient* getClient(void* data) { return m_storage.get(data); }
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uintptr_t m_key = 0;
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static Storage<DaemonClient> m_storage;
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static void onZMQConnect(uv_connect_t* req, int status);
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static void onZMQRead(uv_stream_t* stream, ssize_t nread, const uv_buf_t* buf);
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static void onZMQClose(uv_handle_t* handle);
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static void onZMQShutdown(uv_handle_t* handle);
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void ZMQConnected();
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bool ZMQWrite(const char* data, size_t size);
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void ZMQRead(ssize_t nread, const uv_buf_t* buf);
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void ZMQParse();
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bool ZMQClose(bool shutdown = false);
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std::shared_ptr<DnsRequest> m_dns;
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uv_tcp_t* m_ZMQSocket = nullptr;
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enum {
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ZMQ_NOT_CONNECTED,
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ZMQ_GREETING_1,
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ZMQ_GREETING_2,
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ZMQ_HANDSHAKE,
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ZMQ_CONNECTED,
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ZMQ_DISCONNECTING,
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} m_ZMQConnectionState = ZMQ_NOT_CONNECTED;
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std::vector<char> m_ZMQSendBuf;
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std::vector<char> m_ZMQRecvBuf;
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};
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} /* namespace xmrig */
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#endif /* XMRIG_DAEMONCLIENT_H */
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