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DaemonClient: new X-Hash-Difficulty HTTP header optimization

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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.
This commit is contained in:
moneromooo-monero 2023-03-25 09:42:49 +00:00
parent 9508332258
commit 88b0385bfe
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GPG Key ID: 686F07454D6CEFC3
2 changed files with 7 additions and 3 deletions
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8
src/base/net/stratum/DaemonClient.cpp
View File

@ -178,7 +178,9 @@ int64_t xmrig::DaemonClient::submit(const JobResult &result)
m_results[m_sequence] = SubmitResult(m_sequence, result.diff, result.actualDiff(), 0, result.backend);
# endif
return rpcSend(doc);
std::map<std::string, std::string> headers;
headers.insert({"X-Hash-Difficulty", std::to_string(result.actualDiff())});
return rpcSend(doc, headers);
}
@ -553,9 +555,11 @@ int64_t xmrig::DaemonClient::getBlockTemplate()
}
int64_t xmrig::DaemonClient::rpcSend(const rapidjson::Document &doc)
int64_t xmrig::DaemonClient::rpcSend(const rapidjson::Document &doc, const std::map<std::string, std::string> &headers)
{
FetchRequest req(HTTP_POST, m_pool.host(), m_pool.port(), kJsonRPC, doc, m_pool.isTLS(), isQuiet());
for (const auto &header: headers)
req.headers.insert(header);
fetch(tag(), std::move(req), m_httpListener);
return m_sequence++;

2
src/base/net/stratum/DaemonClient.h
View File

@ -86,7 +86,7 @@ private:
bool parseJob(const rapidjson::Value &params, int *code);
bool parseResponse(int64_t id, const rapidjson::Value &result, const rapidjson::Value &error);
int64_t getBlockTemplate();
int64_t rpcSend(const rapidjson::Document &doc);
int64_t rpcSend(const rapidjson::Document &doc, const std::map<std::string, std::string> &headers = {});
void retry();
void send(const char *path);
void setState(SocketState state);