public static void Main(string[] args)
{
CConsole.ColorInfo(() =>
{
#if (DEBUG)
Console.WriteLine("[{0}] webminerpool server started - DEBUG MODE", DateTime.Now);
#else
Console.WriteLine("[{0}] webminerpool server started", DateTime.Now);
#endif
Console.WriteLine();
});
try
{
PoolList = PoolList.LoadFromFile("pools.json");
}
catch (Exception ex)
{
CConsole.ColorAlert(() => Console.WriteLine("Could not load pool list from pools.json: {0}", ex.Message));
return;
}
CConsole.ColorInfo(() => Console.WriteLine("Loaded {0} pools from pools.json.", PoolList.Count));
Exception exception = null;
libHashAvailable = true;
libHashAvailable = libHashAvailable && CheckLibHash("6465206f6d6e69627573206475626974616e64756d",
"2f8e3df40bd11f9ac90c743ca8e32bb391da4fb98612aa3b6cdc639ee00b31f5",
0, 0, 0, out exception);
libHashAvailable = libHashAvailable && CheckLibHash("38274c97c45a172cfc97679870422e3a1ab0784960c60514d816271415c306ee3a3ed1a77e31f6a885c3cb",
"ed082e49dbd5bbe34a3726a0d1dad981146062b39d36d62c71eb1ed8ab49459b",
0, 1, 0, out exception);
libHashAvailable = libHashAvailable && CheckLibHash("5468697320697320612074657374205468697320697320612074657374205468697320697320612074657374",
"353fdc068fd47b03c04b9431e005e00b68c2168a3cc7335c8b9b308156591a4f",
0, 2, 0, out exception);
libHashAvailable = libHashAvailable && CheckLibHash("5468697320697320612074657374205468697320697320612074657374205468697320697320612074657374",
"f759588ad57e758467295443a9bd71490abff8e9dad1b95b6bf2f5d0d78387bc",
0, 4, 1806260, out exception);
libHashAvailable = libHashAvailable && CheckLibHash("5468697320697320612074657374205468697320697320612074657374205468697320697320612074657374",
"32f736ec1d2f3fc54c49beb8a0476cbfdd14c351b9c6d72c6f9ffcb5875be6b3",
4, 2, 0, out exception);
if (!libHashAvailable)
{
CConsole.ColorWarning(() =>
{
Console.WriteLine("libhash.so is not available. Checking user submitted hashes disabled:");
Console.WriteLine(" -> {0}", new StringReader(exception.ToString()).ReadLine());
});
}
PoolConnectionFactory.RegisterCallbacks(PoolReceiveCallback, PoolErrorCallback, PoolDisconnectCallback);
string loginsFilename = "logins.json";
if (File.Exists(loginsFilename))
{
try
{
string json = File.ReadAllText(loginsFilename);
JsonData data = json.FromJson <JsonData>();
foreach (string loginID in data.Keys)
{
JsonData jinfo = data[loginID] as JsonData;
Credentials cred = new Credentials
{
Pool = jinfo["pool"].GetString(),
Login = jinfo["login"].GetString(),
Password = jinfo["password"].GetString()
};
loginids.TryAdd(loginID, cred);
}
}
catch (Exception ex)
{
CConsole.ColorAlert(() => Console.WriteLine("Error while reading logins: {0}", ex));
}
}
X509Certificate2 cert = null;
try { cert = new X509Certificate2("certificate.pfx", "miner"); } catch (Exception e) { exception = e; cert = null; }
bool certAvailable = (cert != null);
if (!certAvailable)
{
CConsole.ColorWarning(() =>
{
Console.WriteLine("SSL certificate could not be loaded. Secure connection disabled.");
Console.WriteLine(" -> {0}", new StringReader(exception.ToString()).ReadLine());
});
}
string localAddr = (certAvailable ? "wss://" : "ws://") + "0.0.0.0:8181";
WebSocketServer server = new WebSocketServer(localAddr);
server.Certificate = cert;
FleckLog.LogAction = (level, message, ex) =>
{
switch (level)
{
case LogLevel.Debug:
#if (DEBUG)
Console.WriteLine("FLECK (Debug): " + message);
#endif
break;
case LogLevel.Error:
if (ex != null && !string.IsNullOrEmpty(ex.Message))
{
CConsole.ColorAlert(() => Console.WriteLine("FLECK: " + message + " " + ex.Message));
exceptionCounter++;
if ((exceptionCounter % 200) == 0)
{
Helper.WriteTextAsyncWrapper("fleck_error.txt", ex.ToString());
}
}
else
{
Console.WriteLine("FLECK: " + message);
}
break;
case LogLevel.Warn:
if (ex != null && !string.IsNullOrEmpty(ex.Message))
{
Console.WriteLine("FLECK: " + message + " " + ex.Message);
exceptionCounter++;
if ((exceptionCounter % 200) == 0)
{
Helper.WriteTextAsyncWrapper("fleck_warn.txt", ex.ToString());
}
}
else
{
Console.WriteLine("FLECK: " + message);
}
break;
default:
Console.WriteLine("FLECK: " + message);
break;
}
};
server.RestartAfterListenError = true;
server.ListenerSocket.NoDelay = false;
server.Start(socket =>
{
socket.OnOpen = () =>
{
string ipadr = string.Empty;
try { ipadr = socket.ConnectionInfo.ClientIpAddress; } catch { }
Client client = new Client();
client.WebSocket = socket;
client.Created = client.LastPoolJobTime = DateTime.Now;
Guid guid = socket.ConnectionInfo.Id;
clients.TryAdd(guid, client);
Console.WriteLine("{0}: connected with ip {1}", guid, ipadr);
};
socket.OnClose = () =>
{
Guid guid = socket.ConnectionInfo.Id;
RemoveClient(socket.ConnectionInfo.Id);
Console.WriteLine(guid + ": closed");
};
socket.OnError = error =>
{
Guid guid = socket.ConnectionInfo.Id;
RemoveClient(socket.ConnectionInfo.Id);
Console.WriteLine(guid + ": unexpected close");
};
socket.OnMessage = message =>
{
string ipadr = string.Empty;
try { ipadr = socket.ConnectionInfo.ClientIpAddress; } catch { }
Guid guid = socket.ConnectionInfo.Id;
if (message.Length > 3000)
{
RemoveClient(guid); // that can't be valid, do not even try to parse
}
JsonData msg = message.FromJson <JsonData>();
if (msg == null || !msg.ContainsKey("identifier"))
{
return;
}
Client client = null;
// in very rare occasions, we get interference with onopen()
// due to async code. wait a second and retry.
for (int tries = 0; tries < 4; tries++)
{
if (clients.TryGetValue(guid, out client))
{
break;
}
Task.Run(async delegate { await Task.Delay(TimeSpan.FromSeconds(1)); }).Wait();
}
if (client == null)
{
// famous comment: this should not happen
RemoveClient(guid);
return;
}
string identifier = (string)msg["identifier"];
if (identifier == "handshake")
{
if (client.GotHandshake)
{
// no merci for malformed data.
DisconnectClient(client, "Handshake already performed.");
return;
}
client.GotHandshake = true;
if (msg.ContainsKey("version"))
{
int.TryParse(msg["version"].GetString(), out client.Version);
}
if (client.Version < 7)
{
DisconnectClient(client, "Client version too old.");
return;
}
if (client.Version < 8)
{
CConsole.ColorWarning(() => Console.WriteLine("Warning: Outdated client connected. Make sure to update the clients"));
}
if (msg.ContainsKey("loginid"))
{
string loginid = msg["loginid"].GetString();
if (!loginids.TryGetValue(loginid, out Credentials crdts))
{
Console.WriteLine("Unregistered LoginId! {0}", loginid);
DisconnectClient(client, "Loginid not registered!");
return;
}
// prefer the password in the handshake, if it does not exist use the one in the loginid
if (msg.ContainsKey("password"))
{
client.Password = msg["password"].GetString();
}
else
{
client.Password = crdts.Password;
}
// use the values in the loginid for everything else
client.Login = crdts.Login;
client.Pool = crdts.Pool;
}
else if (msg.ContainsKey("login") && msg.ContainsKey("password") && msg.ContainsKey("pool"))
{
client.Login = msg["login"].GetString();
client.Password = msg["password"].GetString();
client.Pool = msg["pool"].GetString();
}
else
{
// no merci for malformed data.
Console.WriteLine("Malformed handshake");
DisconnectClient(client, "Login, password and pool have to be specified.");
return;
}
client.UserId = string.Empty;
if (msg.ContainsKey("userid"))
{
string uid = msg["userid"].GetString();
if (uid.Length > 200)
{
RemoveClient(socket.ConnectionInfo.Id); return;
}
client.UserId = uid;
}
Console.WriteLine("{0}: handshake - {1}, {2}", guid, client.Pool,
(client.Login.Length > 8 ? client.Login.Substring(0, 8) + "..." : client.Login));
if (!string.IsNullOrEmpty(ipadr))
{
Firewall.Update(ipadr, Firewall.UpdateEntry.Handshake);
}
PoolInfo pi;
if (!PoolList.TryGetPool(client.Pool, out pi))
{
// we dont have that pool?
DisconnectClient(client, "pool not known");
return;
}
// if pools have some default password
if (client.Password == "")
{
client.Password = pi.EmptyPassword;
}
client.PoolConnection = PoolConnectionFactory.CreatePoolConnection(
client, pi.Url, pi.Port, client.Login, client.Password);
client.PoolConnection.DefaultAlgorithm = pi.DefaultAlgorithm;
}
else if (identifier == "solved")
{
if (!client.GotHandshake)
{
RemoveClient(socket.ConnectionInfo.Id);
return;
}
Console.WriteLine("{0}: reports solved hash", guid);
new Task(() =>
{
if (!msg.ContainsKey("job_id") ||
!msg.ContainsKey("nonce") ||
!msg.ContainsKey("result"))
{
// no merci for malformed data.
RemoveClient(guid);
return;
}
string jobid = msg["job_id"].GetString();
if (!jobInfos.TryGetValue(jobid, out JobInfo ji))
{
// this job id is not known to us
Console.WriteLine("Job unknown!");
return;
}
string reportedNonce = msg["nonce"].GetString();
string reportedResult = msg["result"].GetString();
if (ji.Solved.Contains(reportedNonce.ToLower()))
{
Console.WriteLine("Nonce collision!");
return;
}
if (reportedNonce.Length != 8 || (!Regex.IsMatch(reportedNonce, RegexIsHex)))
{
DisconnectClient(client, "nonce malformed");
return;
}
if (reportedResult.Length != 64 || (!Regex.IsMatch(reportedResult, RegexIsHex)))
{
DisconnectClient(client, "result malformed");
return;
}
double prob = ((double)HexToUInt32(ji.Target)) / ((double)0xffffffff);
long howmanyhashes = ((long)(1.0 / prob));
totalHashes += howmanyhashes;
if (ji.OwnJob)
{
// that was an "own" job. could be that the target does not match
if (!CheckHashTarget(ji.Target, reportedResult))
{
Console.WriteLine("Hash does not reach our target difficulty.");
return;
}
totalOwnHashes += howmanyhashes;
}
// default chance to get hash-checked is 10%
double chanceForACheck = 0.1;
// check new clients more often, but prevent that to happen the first 30s the server is running
if (Heartbeats > 3 && client.NumChecked < 9)
{
chanceForACheck = 1.0 - 0.1 * client.NumChecked;
}
bool performFullCheck = (Random2.NextDouble() < chanceForACheck && HashesCheckedThisHeartbeat < MaxHashChecksPerHeartbeat);
if (performFullCheck)
{
client.NumChecked++;
HashesCheckedThisHeartbeat++;
}
bool validHash = CheckHash(ji, reportedResult, reportedNonce, performFullCheck);
if (!validHash)
{
CConsole.ColorWarning(() =>
Console.WriteLine("{0} got disconnected for WRONG hash.", client.WebSocket.ConnectionInfo.Id.ToString()));
if (!string.IsNullOrEmpty(ipadr))
{
Firewall.Update(ipadr, Firewall.UpdateEntry.WrongHash);
}
RemoveClient(client.WebSocket.ConnectionInfo.Id);
}
else
{
if (performFullCheck)
{
Console.WriteLine("{0}: got hash-checked", client.WebSocket.ConnectionInfo.Id.ToString());
}
if (!string.IsNullOrEmpty(ipadr))
{
Firewall.Update(ipadr, Firewall.UpdateEntry.SolvedJob);
}
ji.Solved.TryAdd(reportedNonce.ToLower());
if (!ji.OwnJob)
{
client.PoolConnection.Hashes += howmanyhashes;
}
Client jiClient = client;
if (ji.OwnJob)
{
jiClient = ourself;
}
string msg1 = "{\"id\":\"" + jiClient.PoolConnection.PoolId +
"\",\"job_id\":\"" + ji.InnerId +
"\",\"nonce\":\"" + msg["nonce"].GetString() +
"\",\"result\":\"" + msg["result"].GetString() +
"\"}";
string msg0 = "{\"method\":\"" + "submit" +
"\",\"params\":" + msg1 +
",\"id\":\"" + "1" + "\"}\n"; // TODO: check the "1"
jiClient.PoolConnection.Send(jiClient, msg0);
}
}).Start();
} // identified == solved
};
});
bool running = true;
double totalSpeed = 0, totalOwnSpeed = 0;
while (running)
{
Firewall.Heartbeat(Heartbeats++);
try
{
Task.Run(async delegate { await Task.Delay(TimeSpan.FromSeconds(HeartbeatRate)); }).Wait();
if (Heartbeats % SpeedAverageOverXHeartbeats == 0)
{
totalSpeed = (double)totalHashes / (double)(HeartbeatRate * SpeedAverageOverXHeartbeats);
totalOwnSpeed = (double)totalOwnHashes / (double)(HeartbeatRate * SpeedAverageOverXHeartbeats);
totalHashes = 0;
totalOwnHashes = 0;
}
CConsole.ColorInfo(() =>
Console.WriteLine("[{0}] heartbeat; connections client/pool: {1}/{2}; jobqueue: {3}k; speed: {4}kH/s",
DateTime.Now.ToString(),
clients.Count,
PoolConnectionFactory.Connections.Count,
((double)jobQueue.Count / 1000.0d).ToString("F1"),
((double)totalSpeed / 1000.0d).ToString("F1")));
while (jobQueue.Count > JobCacheSize)
{
if (jobQueue.TryDequeue(out string deq))
{
jobInfos.TryRemove(deq);
}
}
DateTime now = DateTime.Now;
List <PoolConnection> pcc = new List <PoolConnection>(PoolConnectionFactory.Connections.Values);
foreach (PoolConnection pc in pcc)
{
PoolConnectionFactory.CheckPoolConnection(pc);
}
List <Client> cc = new List <Client>(clients.Values);
foreach (Client c in cc)
{
try
{
if ((now - c.Created).TotalSeconds > GraceConnectionTime)
{
if (c.PoolConnection == null || c.PoolConnection.TcpClient == null)
{
DisconnectClient(c, "timeout.");
}
else if (!c.PoolConnection.TcpClient.Connected)
{
DisconnectClient(c, "lost pool connection.");
}
else if ((now - c.LastPoolJobTime).TotalSeconds > PoolTimeout)
{
DisconnectClient(c, "pool is not sending new jobs.");
}
}
}
catch { RemoveClient(c.WebSocket.ConnectionInfo.Id); }
}
if (clients.ContainsKey(Guid.Empty))
{
if (clients.Count == 1)
{
RemoveClient(Guid.Empty);
}
}
else
{
if (clients.Count > 4 && Donation.DonationLevel > double.Epsilon)
{
CConsole.ColorWarning(() =>
Console.WriteLine("disconnected from own pool. trying to reconnect."));
ownJob = new Job();
CreateOurself();
}
}
HashesCheckedThisHeartbeat = 0;
if (Heartbeats % ForceGCEveryXHeartbeat == 0)
{
CConsole.ColorInfo(() =>
{
Console.WriteLine("Currently using {1} MB ({0} clients).", clients.Count,
Math.Round(((double)(GC.GetTotalMemory(false)) / 1024 / 1024)));
});
}
}
catch (Exception ex)
{
CConsole.ColorAlert(() =>
Console.WriteLine("Exception caught in the main loop ! {0}", ex));
}
}
}
private static void ReceiveCallback(IAsyncResult result)
{
PoolConnection mypc = result.AsyncState as PoolConnection;
TcpClient client = mypc.TcpClient;
if (!client.Connected)
{
return;
}
NetworkStream networkStream;
try { networkStream = client.GetStream(); } catch { return; }
int bytesread = 0;
try { bytesread = networkStream.EndRead(result); } catch { return; }
string json = string.Empty;
try {
if (bytesread == 0) // disconnected
{
// slow that down a bit to avoid negative feedback loop
Task.Run(async delegate {
await Task.Delay(TimeSpan.FromSeconds(4));
List <Client> cllist = new List <Client> (mypc.WebClients.Values);
foreach (Client ev in cllist)
{
Disconnect(ev, "lost pool connection.");
}
});
return;
}
json = ASCIIEncoding.ASCII.GetString(mypc.ReceiveBuffer, 0, bytesread);
networkStream.BeginRead(mypc.ReceiveBuffer, 0, mypc.ReceiveBuffer.Length, new AsyncCallback(ReceiveCallback), mypc);
} catch { return; }
if (bytesread == 0 || string.IsNullOrEmpty(json))
{
return; //?!
}
var msg = json.FromJson <JsonData> ();
if (msg == null)
{
return;
}
if (string.IsNullOrEmpty(mypc.PoolId))
{
// this "protocol" is strange
if (!msg.ContainsKey("result"))
{
string additionalInfo = "none";
// try to get the error
if (msg.ContainsKey("error"))
{
msg = msg["error"] as JsonData;
if (msg != null && msg.ContainsKey("message"))
{
additionalInfo = msg["message"].GetString();
}
}
List <Client> cllist = new List <Client> (mypc.WebClients.Values);
foreach (Client ev in cllist)
{
Disconnect(ev, "can not connect. additional information: " + additionalInfo);
}
return;
}
msg = msg["result"] as JsonData;
if (msg == null)
{
return;
}
if (!msg.ContainsKey("id"))
{
return;
}
if (!msg.ContainsKey("job"))
{
return;
}
mypc.PoolId = msg["id"].GetString();
var lastjob = msg["job"] as JsonData;
if (!VerifyJob(lastjob))
{
CConsole.ColorWarning(() =>
Console.WriteLine("Failed to verify job: {0}", json));
return;
}
// extended stratum
if (!lastjob.ContainsKey("variant"))
{
lastjob.Add("variant", mypc.DefaultVariant);
}
if (!lastjob.ContainsKey("algo"))
{
lastjob.Add("algo", mypc.DefaultAlgorithm);
}
string normalized;
if (!AlgorithmHelper.Normalize(lastjob["algo"].GetString(), out normalized))
{
CConsole.ColorAlert(() => {
Console.WriteLine("Pool " + mypc.Url + " requests unknown algorithm: " + lastjob["algo"].GetString());
Console.WriteLine("Job ignored!");
});
return;
}
lastjob["algo"] = normalized;
mypc.LastJob = lastjob;
mypc.LastInteraction = DateTime.Now;
mypc.LastSolved = new CcHashset <string> ();
List <Client> cllist2 = new List <Client> (mypc.WebClients.Values);
foreach (Client ev in cllist2)
{
ReceiveJob(ev, mypc.LastJob, mypc.LastSolved);
}
}
else if (msg.ContainsKey("method") && msg["method"].GetString() == "job")
{
if (!msg.ContainsKey("params"))
{
return;
}
var lastjob = msg["params"] as JsonData;
if (!VerifyJob(lastjob))
{
CConsole.ColorWarning(() =>
Console.WriteLine("Failed to verify job: {0}", json));
return;
}
// extended stratum
if (!lastjob.ContainsKey("variant"))
{
lastjob.Add("variant", mypc.DefaultVariant);
}
if (!lastjob.ContainsKey("algo"))
{
lastjob.Add("algo", mypc.DefaultAlgorithm);
}
string normalized;
if (!AlgorithmHelper.Normalize(lastjob["algo"].GetString(), out normalized))
{
CConsole.ColorAlert(() => {
Console.WriteLine("Pool " + mypc.Url + " requests unknown algorithm: " + lastjob["algo"].GetString());
Console.WriteLine("Job ignored!");
});
return;
}
lastjob["algo"] = normalized;
mypc.LastJob = lastjob;
mypc.LastInteraction = DateTime.Now;
mypc.LastSolved = new CcHashset <string> ();
List <Client> cllist2 = new List <Client> (mypc.WebClients.Values);
Console.WriteLine("Sending job to {0} client(s)!", cllist2.Count);
foreach (Client ev in cllist2)
{
ReceiveJob(ev, mypc.LastJob, mypc.LastSolved);
}
}
else
{
if (msg.ContainsKey("error"))
{
// who knows?
ReceiveError(mypc.LastSender, msg);
}
else
{
CConsole.ColorWarning(() =>
Console.WriteLine("Pool is sending nonsense."));
}
}
}