Add support for Goldshell AL BOX (I & II)

Add support for IceRiver ALPH AL0
Improves ALPH stratum handling of "mining.notify" & "mining.set_difficulty"

examples/alephium_pool.json

@@ -109,6 +109,18 @@
                     "variancePercent": 100,
                     "maxDelta": 512
                 }
+            },
+            "3096": {
+                "listenAddress": "0.0.0.0",
+                "difficulty": 256,
+                "varDiff": {
+                    "minDiff": 256,
+                    "maxDiff": null,
+                    "targetTime": 15,
+                    "retargetTime": 90,
+                    "variancePercent": 30,
+                    "maxDelta": 2048
+                }
             }
         },
         "daemons": [

src/Miningcore/Blockchain/Alephium/AlephiumConstants.cs

@@ -22,6 +22,9 @@ public static class AlephiumConstants
 
     public const string BlockTypeUncle = "uncle";
     public const string BlockTypeBlock = "block";
+
+    public static readonly Regex RegexUserAgentGoldShell = new("goldshell", RegexOptions.Compiled | RegexOptions.IgnoreCase);
+    public static readonly Regex RegexUserAgentIceRiverMiner = new("iceriverminer", RegexOptions.Compiled | RegexOptions.IgnoreCase);
 
     // Socket miner API
     public const int MessageHeaderSize = 4; // 4 bytes body length

src/Miningcore/Blockchain/Alephium/AlephiumJobManager.cs

@@ -7,6 +7,7 @@
 using System.Reactive.Linq;
 using System.Security.Cryptography;
 using System.Text;
+using System.Text.RegularExpressions;
 using System.IO;
 using System.Net;
 using System.Net.Sockets;
@@ -573,6 +574,26 @@ public async Task<bool> ValidateAddress(string address, CancellationToken ct)
         return validity?.Group1 >= 0;
     }
 
+    public bool ValidateIsGoldShell(string userAgent)
+    {
+        if(string.IsNullOrEmpty(userAgent))
+            return false;
+
+        // Find matches
+        MatchCollection matchesUserAgentGoldShell = AlephiumConstants.RegexUserAgentGoldShell.Matches(userAgent);
+        return (matchesUserAgentGoldShell.Count > 0);
+    }
+
+    public bool ValidateIsIceRiverMiner(string userAgent)
+    {
+        if(string.IsNullOrEmpty(userAgent))
+            return false;
+
+        // Find matches
+        MatchCollection matchesUserAgentIceRiverMiner = AlephiumConstants.RegexUserAgentIceRiverMiner.Matches(userAgent);
+        return (matchesUserAgentIceRiverMiner.Count > 0);
+    }
+
     #endregion // API-Surface
 
     #region Overrides

src/Miningcore/Blockchain/Alephium/AlephiumPool.cs

@@ -71,7 +71,7 @@ protected virtual async Task OnHelloAsync(StratumConnection connection, Timestam
         // [Respect the goddamn standards Nicehack :(]
         var response = new JsonRpcResponse<object[]>(data, request.Id);
 
-        if(context.IsNicehash)
+        if(context.IsNicehash || manager.ValidateIsGoldShell(context.UserAgent) || manager.ValidateIsIceRiverMiner(context.UserAgent))
         {
             response.Extra = new Dictionary<string, object>();
             response.Extra["error"] = null;
@@ -105,7 +105,7 @@ protected virtual async Task OnSubscribeAsync(StratumConnection connection, Time
         // [Respect the goddamn standards Nicehack :(]
         var response = new JsonRpcResponse<object>(connection.ConnectionId, request.Id);
 
-        if(context.IsNicehash)
+        if(context.IsNicehash || manager.ValidateIsGoldShell(context.UserAgent) || manager.ValidateIsIceRiverMiner(context.UserAgent))
         {
             response.Extra = new Dictionary<string, object>();
             response.Extra["error"] = null;
@@ -156,7 +156,7 @@ protected virtual async Task OnAuthorizeAsync(StratumConnection connection, Time
             // [Respect the goddamn standards Nicehack :(]
             var response = new JsonRpcResponse<object>(context.IsAuthorized, request.Id);
 
-            if(context.IsNicehash)
+            if(context.IsNicehash || manager.ValidateIsGoldShell(context.UserAgent) || manager.ValidateIsIceRiverMiner(context.UserAgent))
             {
                 response.Extra = new Dictionary<string, object>();
                 response.Extra["error"] = null;
@@ -200,7 +200,10 @@ protected virtual async Task OnAuthorizeAsync(StratumConnection connection, Time
 
                 logger.Info(() => $"[{connection.ConnectionId}] Setting static difficulty of {staticDiff.Value}");
             }
-
+
+            // send initial difficulty
+            await connection.NotifyAsync(AlephiumStratumMethods.SetDifficulty, new object[] { context.Difficulty });
+
             // send intial job
             await SendJob(connection, context, currentJobParams);
         }
@@ -259,7 +262,7 @@ protected virtual async Task OnSubmitAsync(StratumConnection connection, Timesta
             // [Respect the goddamn standards Nicehack :(]
             var response = new JsonRpcResponse<object>(true, request.Id);
 
-            if(context.IsNicehash)
+            if(context.IsNicehash || manager.ValidateIsGoldShell(context.UserAgent) || manager.ValidateIsIceRiverMiner(context.UserAgent))
             {
                 response.Extra = new Dictionary<string, object>();
                 response.Extra["error"] = null;
@@ -311,15 +314,19 @@ protected virtual async Task OnNewJobAsync(AlephiumJobParams jobParams)
         await Guard(() => ForEachMinerAsync(async (connection, ct) =>
         {
             var context = connection.ContextAs<AlephiumWorkerContext>();
-            
+
+            // varDiff: if the client has a pending difficulty change, apply it now
+            if(context.ApplyPendingDifficulty())
+                await connection.NotifyAsync(AlephiumStratumMethods.SetDifficulty, new object[] { context.Difficulty });
+
             await SendJob(connection, context, currentJobParams);
         }));
     }
 
     private async Task SendJob(StratumConnection connection, AlephiumWorkerContext context, AlephiumJobParams jobParams)
     {
         var target = EncodeTarget(context.Difficulty);
-        
+
         // clone job params
         var jobParamsActual = new AlephiumJobParams
         {
@@ -330,10 +337,7 @@ private async Task SendJob(StratumConnection connection, AlephiumWorkerContext c
             TxsBlob = jobParams.TxsBlob,
             TargetBlob = target,
         };
-
-        // send difficulty
-        await connection.NotifyAsync(AlephiumStratumMethods.SetDifficulty, new object[] { context.Difficulty });
-
+
         // send job
         await connection.NotifyAsync(AlephiumStratumMethods.MiningNotify, new object[] { jobParamsActual });
     }
@@ -480,6 +484,9 @@ protected override async Task OnVarDiffUpdateAsync(StratumConnection connection,
 
         if(context.ApplyPendingDifficulty())
         {
+            // send difficulty
+            await connection.NotifyAsync(AlephiumStratumMethods.SetDifficulty, new object[] { context.Difficulty });
+
             // send job
             await SendJob(connection, context, currentJobParams);
         }