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/mail/delivery/classes.delivery.system.ts

@@ -221,12 +221,13 @@ export class MultiModeDeliverySystem extends EventEmitter {
         const checkInterval = setInterval(() => {
           if (this.activeDeliveries.size === 0) {
             clearInterval(checkInterval);
+            clearTimeout(forceTimeout);
             resolve();
           }
         }, 1000);
         
         // Force resolve after 30 seconds
-        setTimeout(() => {
+        const forceTimeout = setTimeout(() => {
           clearInterval(checkInterval);
           resolve();
         }, 30000);

ts/mail/delivery/smtpserver/connection-manager.ts

@@ -247,11 +247,23 @@ export class ConnectionManager implements IConnectionManager {
     
     // 2. Check for destroyed sockets in active connections
     let destroyedSocketsCount = 0;
+    const socketsToRemove: Array<plugins.net.Socket | plugins.tls.TLSSocket> = [];
+    
     for (const socket of this.activeConnections) {
       if (socket.destroyed) {
         destroyedSocketsCount++;
-        // This should not happen - remove destroyed sockets from tracking
-        this.activeConnections.delete(socket);
+        socketsToRemove.push(socket);
+      }
+    }
+    
+    // Remove destroyed sockets from tracking
+    for (const socket of socketsToRemove) {
+      this.activeConnections.delete(socket);
+      // Also ensure all listeners are removed
+      try {
+        socket.removeAllListeners();
+      } catch {
+        // Ignore errors from removeAllListeners
       }
     }
     
@@ -341,9 +353,6 @@ export class ConnectionManager implements IConnectionManager {
       SmtpLogger.debug(`Could not set socket buffer limits: ${error instanceof Error ? error.message : String(error)}`);
     }
     
-    // Track this IP connection
-    this.trackIPConnection(remoteAddress);
-    
     // Set up event handlers
     this.setupSocketEventHandlers(socket);
     
@@ -498,9 +507,6 @@ export class ConnectionManager implements IConnectionManager {
       SmtpLogger.debug(`Could not set socket buffer limits: ${error instanceof Error ? error.message : String(error)}`);
     }
     
-    // Track this IP connection
-    this.trackIPConnection(remoteAddress);
-    
     // Set up event handlers
     this.setupSocketEventHandlers(socket);
     
@@ -763,6 +769,9 @@ export class ConnectionManager implements IConnectionManager {
         clearTimeout(session.dataTimeoutId);
       }
       
+      // Remove all event listeners to prevent memory leaks
+      socket.removeAllListeners();
+      
       // Log connection close with session details if available
       adaptiveLogger.logConnection(socket, 'close', session);
       
@@ -774,6 +783,13 @@ export class ConnectionManager implements IConnectionManager {
       
       // Ensure socket is removed from active connections even if an error occurs
       this.activeConnections.delete(socket);
+      
+      // Always try to remove all listeners even on error
+      try {
+        socket.removeAllListeners();
+      } catch {
+        // Ignore errors from removeAllListeners
+      }
     }
   }
   

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