fix: update @push.rocks/smartproxy to version 19.6.1 and improve socket management in ConnectionManager

feat: enhance MetricsManager with reset interval and top domains tracking

ts/monitoring/classes.metricsmanager.ts

@@ -5,6 +5,10 @@ export class MetricsManager {
   private logger: plugins.smartlog.Smartlog;
   private smartMetrics: plugins.smartmetrics.SmartMetrics;
   private dcRouter: DcRouter;
+  private resetInterval?: NodeJS.Timeout;
+  
+  // Constants
+  private readonly MAX_TOP_DOMAINS = 1000; // Limit topDomains Map size
   
   // Track email-specific metrics
   private emailMetrics = {
@@ -54,7 +58,7 @@ export class MetricsManager {
     this.smartMetrics.start();
     
     // Reset daily counters at midnight
-    setInterval(() => {
+    this.resetInterval = setInterval(() => {
       const currentDate = new Date().toDateString();
       
       if (currentDate !== this.emailMetrics.lastResetDate) {
@@ -88,6 +92,12 @@ export class MetricsManager {
   }
   
   public async stop(): Promise<void> {
+    // Clear the reset interval
+    if (this.resetInterval) {
+      clearInterval(this.resetInterval);
+      this.resetInterval = undefined;
+    }
+    
     this.smartMetrics.stop();
     this.logger.log('info', 'MetricsManager stopped');
   }
@@ -232,9 +242,23 @@ export class MetricsManager {
     // Track query types
     this.dnsMetrics.queryTypes[queryType] = (this.dnsMetrics.queryTypes[queryType] || 0) + 1;
     
-    // Track top domains
+    // Track top domains with size limit
     const currentCount = this.dnsMetrics.topDomains.get(domain) || 0;
     this.dnsMetrics.topDomains.set(domain, currentCount + 1);
+    
+    // If we've exceeded the limit, remove the least accessed domains
+    if (this.dnsMetrics.topDomains.size > this.MAX_TOP_DOMAINS) {
+      // Convert to array, sort by count, and keep only top domains
+      const sortedDomains = Array.from(this.dnsMetrics.topDomains.entries())
+        .sort((a, b) => b[1] - a[1])
+        .slice(0, Math.floor(this.MAX_TOP_DOMAINS * 0.8)); // Keep 80% to avoid frequent cleanup
+      
+      // Clear and repopulate with top domains
+      this.dnsMetrics.topDomains.clear();
+      sortedDomains.forEach(([domain, count]) => {
+        this.dnsMetrics.topDomains.set(domain, count);
+      });
+    }
   }
   
   // Security event tracking methods