increase job queue

src/models/StratumV1Client.ts

@@ -316,6 +316,10 @@ export class StratumV1Client {
             });
 
             this.backgroundWork = setInterval(async () => {
+                if (this.promiseSocket.isPromiseWritable == false) {
+                    this.destroy();
+                    return;
+                }
                 await this.checkDifficulty();
                 //await this.watchdog();
             }, 60 * 1000);

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

@@ -127,7 +127,7 @@ export class StratumV1JobsService {
                     this.jobs = [];
                 }
 
-                if (this.blocks.length >= 10) {
+                if (this.blocks.length >= 30) {
                     this.blocks.shift();
                 }