sv1-sv2 routing

src/services/stratum-v1.service.spec.ts

@@ -157,6 +157,15 @@ describe('StratumV1Service', () => {
         expect((service as any).detectProtocol(firstChunk)).toBe('v1');
     });
 
+    it('should detect JSON-RPC as Stratum V1 even with non-printable trailing bytes', () => {
+        const firstChunk = Buffer.concat([
+            Buffer.from('{"id": 1, "method": "mining.subscribe", "params": []}\n'),
+            Buffer.from([0x00, 0xff])
+        ]);
+
+        expect((service as any).detectProtocol(firstChunk)).toBe('v1');
+    });
+
     it('should detect binary Noise traffic as Stratum V2', () => {
         const firstChunk = Buffer.concat([
             Buffer.from([0x01, 0x02, 0x03, 0x04]),

src/services/stratum-v1.service.ts

@@ -453,6 +453,13 @@ export class StratumV1Service implements OnModuleInit {
             return false;
         }
 
+        const jsonPrefix = firstChunk
+            .subarray(firstNonWhitespace, Math.min(firstChunk.length, firstNonWhitespace + 256))
+            .toString('utf8');
+        if (jsonPrefix.includes('"method"') || jsonPrefix.includes('"id"')) {
+            return true;
+        }
+
         for (const byte of firstChunk) {
             const isWhitespace = byte === 0x09 || byte === 0x0a || byte === 0x0d;
             const isPrintableAscii = byte >= 0x20 && byte <= 0x7e;