Critical amendment to GetWorkClient

CHANGELOG.md

@@ -12,6 +12,7 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/).
 - Stratum nicehash. Avoid recalculating target with every job [#1156](https://github.com/ethereum-mining/ethminer/pull/1156).
 - Drop duplicate stratum jobs (pool bug workaround) [#1161](https://github.com/ethereum-mining/ethminer/pull/1161).
 - CLI11 command line parsing support added [#1160](https://github.com/ethereum-mining/ethminer/pull/1160).
+- Farm mode (get_work): fixed loss of valid shares and increment in stales [#1215](https://github.com/ethereum-mining/ethminer/pull/1215).
 - Build fixes & improvements [#1214](https://github.com/ethereum-mining/ethminer/pull/1214).
 ### Removed
 - Disabled Debug configuration for Visual Studio [#69](https://github.com/ethereum-mining/ethminer/issues/69) [#1131](https://github.com/ethereum-mining/ethminer/pull/1131).

ethminer/main.cpp

@@ -171,7 +171,7 @@ class MinerCLI
 			->group(CommonGroup)
 			->check(CLI::Range(2, 999));
 
-		app.add_flag("-R,--report-hashrate", m_report_stratum_hashrate,
+		app.add_flag("-R,--report-hashrate", m_report_hashrate,
 			"Report current hashrate to pool")
 			->group(CommonGroup);
 
@@ -670,10 +670,10 @@ class MinerCLI
 		PoolClient *client = nullptr;
 
 		if (m_mode == OperationMode::Stratum) {
-			client = new EthStratumClient(m_io_service, m_worktimeout, m_responsetimeout, m_email, m_report_stratum_hashrate);
+			client = new EthStratumClient(m_io_service, m_worktimeout, m_responsetimeout, m_email, m_report_hashrate);
 		}
 		else if (m_mode == OperationMode::Farm) {
-			client = new EthGetworkClient(m_farmRecheckPeriod);
+			client = new EthGetworkClient(m_farmRecheckPeriod, m_report_hashrate);
 		}
 		else if (m_mode == OperationMode::Simulation) {
 			client = new SimulateClient(20, m_benchmarkBlock);
@@ -808,7 +808,7 @@ class MinerCLI
 	unsigned m_http_port = 0;
 #endif
 
-	bool m_report_stratum_hashrate = false;
+	bool m_report_hashrate = false;
 	string m_email;
 
 #if ETH_DBUS

libpoolprotocols/getwork/EthGetworkClient.cpp

@@ -8,12 +8,13 @@ using namespace std;
 using namespace dev;
 using namespace eth;
 
-EthGetworkClient::EthGetworkClient(unsigned const & farmRecheckPeriod) : PoolClient(), Worker("getwork")
+EthGetworkClient::EthGetworkClient(unsigned farmRecheckPeriod, bool submitHashrate) : PoolClient(), Worker("getwork"), m_submit_hashrate(submitHashrate)
 {
 	m_farmRecheckPeriod = farmRecheckPeriod;
 	m_authorized = true;
 	m_connection_changed = true;
-	m_solutionToSubmit.nonce = 0;
+	if (m_submit_hashrate)
+		m_client_id = h256::random();
 	startWorking();
 }
 
@@ -32,9 +33,6 @@ void EthGetworkClient::connect()
 		p_client = new ::JsonrpcGetwork(new jsonrpc::HttpClient(ss.str()));
 	}
 
-//	cnote << "connect to " << m_host;
-
-	m_client_id = h256::random();
 	m_connection_changed = false;
 	m_justConnected = true; // We set a fake flag, that we can check with workhandler if connection works
 }
@@ -53,13 +51,35 @@ void EthGetworkClient::disconnect()
 void EthGetworkClient::submitHashrate(string const & rate)
 {
 	// Store the rate in temp var. Will be handled in workLoop
+	// Hashrate submission does not need to be as quick as possible
 	m_currentHashrateToSubmit = rate;
+
 }
 
 void EthGetworkClient::submitSolution(Solution solution)
 {
-	// Store the solution in temp var. Will be handled in workLoop
-	m_solutionToSubmit = solution;
+	// Immediately send found solution without wait for loop
+	if (m_connected || m_justConnected) {
+		try
+		{
+			bool accepted = p_client->eth_submitWork("0x" + toHex(solution.nonce), "0x" + toString(solution.work.header), "0x" + toString(solution.mixHash));
+			if (accepted) {
+				if (m_onSolutionAccepted) {
+					m_onSolutionAccepted(false);
+				}
+			}
+			else {
+				if (m_onSolutionRejected) {
+					m_onSolutionRejected(false);
+				}
+			}
+		}
+		catch (jsonrpc::JsonRpcException const& _e)
+		{
+			cwarn << "Failed to submit solution.";
+			cwarn << boost::diagnostic_information(_e);
+		}
+	}
 }
 
 // Handles all getwork communication.
@@ -69,31 +89,6 @@ void EthGetworkClient::workLoop()
 	{
 		if (m_connected || m_justConnected) {
 
-			// Submit solution
-			if (m_solutionToSubmit.nonce) {
-				try
-				{
-					bool accepted = p_client->eth_submitWork("0x" + toHex(m_solutionToSubmit.nonce), "0x" + toString(m_solutionToSubmit.work.header), "0x" + toString(m_solutionToSubmit.mixHash));
-					if (accepted) {
-						if (m_onSolutionAccepted) {
-							m_onSolutionAccepted(false);
-						}
-					}
-					else {
-						if (m_onSolutionRejected) {
-							m_onSolutionRejected(false);
-						}
-					}
-
-					m_solutionToSubmit.nonce = 0;
-				}
-				catch (jsonrpc::JsonRpcException const& _e)
-				{
-					cwarn << "Failed to submit solution.";
-					cwarn << boost::diagnostic_information(_e);
-				}
-			}
-
 			// Get Work
 			try
 			{
@@ -129,7 +124,7 @@ void EthGetworkClient::workLoop()
 			}
 
 			// Submit current hashrate if needed
-			if (!m_currentHashrateToSubmit.empty()) {
+			if (m_submit_hashrate && !m_currentHashrateToSubmit.empty()) {
 				try
 				{
 					p_client->eth_submitHashrate(m_currentHashrateToSubmit, "0x" + m_client_id.hex());
@@ -139,7 +134,7 @@ void EthGetworkClient::workLoop()
 					//cwarn << "Failed to submit hashrate.";
 					//cwarn << boost::diagnostic_information(_e);
 				}
-				m_currentHashrateToSubmit = "";
+				m_currentHashrateToSubmit.clear();
 			}
 		}
 

libpoolprotocols/getwork/EthGetworkClient.h

@@ -13,7 +13,7 @@ using namespace eth;
 class EthGetworkClient : public PoolClient, Worker
 {
 public:
-	EthGetworkClient(unsigned const & farmRecheckPeriod);
+	EthGetworkClient(unsigned farmRecheckPeriod, bool submitHashrate);
 	~EthGetworkClient();
 
 	void connect() override;
@@ -32,9 +32,12 @@ class EthGetworkClient : public PoolClient, Worker
 	unsigned m_farmRecheckPeriod = 500;
 
 	string m_currentHashrateToSubmit = "";
-	Solution m_solutionToSubmit;
+
 	bool m_justConnected = false;
 	h256 m_client_id;
 	JsonrpcGetwork *p_client;
 	WorkPackage m_prevWorkPackage;
+
+	// Hashrate submission is optional
+	bool m_submit_hashrate;
 };