BREAKING CHANGE(core): refactor: reorganize internal module structure to use classes.pp.* modules

- Renamed port proxy and SNI handler source files to classes.pp.portproxy.js and classes.pp.snihandler.js respectively
- Updated import paths in index.ts and test files (e.g. in test.ts and test.router.ts) to reference the new file names
- This refactor improves code organization but breaks direct imports from the old paths

changelog.md

@@ -1,5 +1,17 @@
 # Changelog
 
+## 2025-03-14 - 4.0.0 - BREAKING CHANGE(core)
+refactor: reorganize internal module structure to use 'classes.pp.*' modules
+
+- Renamed port proxy and SNI handler source files to 'classes.pp.portproxy.js' and 'classes.pp.snihandler.js' respectively
+- Updated import paths in index.ts and test files (e.g. in test.ts and test.router.ts) to reference the new file names
+- This refactor improves code organization but breaks direct imports from the old paths
+
+- Renamed 'ts/classes.portproxy.ts' to 'ts/classes.pp.portproxy.ts'
+- Renamed 'ts/classes.snihandler.ts' to 'ts/classes.pp.snihandler.ts'
+- Updated exports in index.ts to export from 'classes.pp.portproxy.js' and 'classes.pp.snihandler.js'
+- Updated test files to import modules from new paths
+
 ## 2025-03-12 - 3.41.8 - fix(portproxy)
 Improve TLS handshake timeout handling and connection piping in PortProxy
 

test/test.portproxy.ts

@@ -1,6 +1,6 @@
 import { expect, tap } from '@push.rocks/tapbundle';
 import * as net from 'net';
-import { PortProxy } from '../ts/classes.portproxy.js';
+import { PortProxy } from '../ts/classes.pp.portproxy.js';
 
 let testServer: net.Server;
 let portProxy: PortProxy;
@@ -299,8 +299,8 @@ tap.test('should use round robin for multiple target IPs in domain config', asyn
   
   // Don't track this proxy as it doesn't actually start or listen
   
-  const firstTarget = (proxyInstance as any).getTargetIP(domainConfig);
+  const firstTarget = proxyInstance.domainConfigManager.getTargetIP(domainConfig);
-  const secondTarget = (proxyInstance as any).getTargetIP(domainConfig);
+  const secondTarget = proxyInstance.domainConfigManager.getTargetIP(domainConfig);
   expect(firstTarget).toEqual('hostA');
   expect(secondTarget).toEqual('hostB');
 });

test/test.ts

@@ -226,8 +226,8 @@ tap.test('should start the proxy server', async () => {
   // Awaiting the update ensures that the SNI context is added before any requests come in.
   await testProxy.updateProxyConfigs([
     {
-      destinationIp: '127.0.0.1',
+      destinationIps: ['127.0.0.1'],
-      destinationPort: '3000',
+      destinationPorts: [3000],
       hostName: 'push.rocks',
       publicKey: testCertificates.publicKey,
       privateKey: testCertificates.privateKey,
@@ -280,8 +280,8 @@ tap.test('should support WebSocket connections', async () => {
   // Reconfigure proxy with test certificates if necessary
   await testProxy.updateProxyConfigs([
     {
-      destinationIp: '127.0.0.1',
+      destinationIps: ['127.0.0.1'],
-      destinationPort: '3000',
+      destinationPorts: [3000],
       hostName: 'push.rocks',
       publicKey: testCertificates.publicKey,
       privateKey: testCertificates.privateKey,

ts/00_commitinfo_data.ts

@@ -3,6 +3,6 @@
  */
 export const commitinfo = {
   name: '@push.rocks/smartproxy',
-  version: '3.41.8',
+  version: '4.0.0',
   description: 'A powerful proxy package that effectively handles high traffic, with features such as SSL/TLS support, port proxying, WebSocket handling, dynamic routing with authentication options, and automatic ACME certificate management.'
 }

ts/classes.pp.acmemanager.ts

@@ -0,0 +1,149 @@
+import type { IPortProxySettings } from './classes.pp.interfaces.js';
+import { NetworkProxyBridge } from './classes.pp.networkproxybridge.js';
+
+/**
+ * Manages ACME certificate operations
+ */
+export class AcmeManager {
+  constructor(
+    private settings: IPortProxySettings,
+    private networkProxyBridge: NetworkProxyBridge
+  ) {}
+  
+  /**
+   * Get current ACME settings
+   */
+  public getAcmeSettings(): IPortProxySettings['acme'] {
+    return this.settings.acme;
+  }
+  
+  /**
+   * Check if ACME is enabled
+   */
+  public isAcmeEnabled(): boolean {
+    return !!this.settings.acme?.enabled;
+  }
+  
+  /**
+   * Update ACME certificate settings
+   */
+  public async updateAcmeSettings(acmeSettings: IPortProxySettings['acme']): Promise<void> {
+    console.log('Updating ACME certificate settings');
+    
+    // Check if enabled state is changing
+    const enabledChanging = this.settings.acme?.enabled !== acmeSettings.enabled;
+    
+    // Update settings
+    this.settings.acme = {
+      ...this.settings.acme,
+      ...acmeSettings,
+    };
+    
+    // Get NetworkProxy instance
+    const networkProxy = this.networkProxyBridge.getNetworkProxy();
+    
+    if (!networkProxy) {
+      console.log('Cannot update ACME settings - NetworkProxy not initialized');
+      return;
+    }
+    
+    try {
+      // If enabled state changed, we need to restart NetworkProxy
+      if (enabledChanging) {
+        console.log(`ACME enabled state changed to: ${acmeSettings.enabled}`);
+        
+        // Stop the current NetworkProxy
+        await this.networkProxyBridge.stop();
+        
+        // Reinitialize with new settings
+        await this.networkProxyBridge.initialize();
+        
+        // Start NetworkProxy with new settings
+        await this.networkProxyBridge.start();
+      } else {
+        // Just update the settings in the existing NetworkProxy
+        console.log('Updating ACME settings in NetworkProxy without restart');
+        
+        // Update settings in NetworkProxy
+        if (networkProxy.options && networkProxy.options.acme) {
+          networkProxy.options.acme = { ...this.settings.acme };
+          
+          // For certificate renewals, we might want to trigger checks with the new settings
+          if (acmeSettings.renewThresholdDays !== undefined) {
+            console.log(`Setting new renewal threshold to ${acmeSettings.renewThresholdDays} days`);
+            networkProxy.options.acme.renewThresholdDays = acmeSettings.renewThresholdDays;
+          }
+          
+          // Update other settings that might affect certificate operations
+          if (acmeSettings.useProduction !== undefined) {
+            console.log(`Setting ACME to ${acmeSettings.useProduction ? 'production' : 'staging'} mode`);
+          }
+          
+          if (acmeSettings.autoRenew !== undefined) {
+            console.log(`Setting auto-renewal to ${acmeSettings.autoRenew ? 'enabled' : 'disabled'}`);
+          }
+        }
+      }
+    } catch (err) {
+      console.log(`Error updating ACME settings: ${err}`);
+    }
+  }
+  
+  /**
+   * Request a certificate for a specific domain
+   */
+  public async requestCertificate(domain: string): Promise<boolean> {
+    // Validate domain format
+    if (!this.isValidDomain(domain)) {
+      console.log(`Invalid domain format: ${domain}`);
+      return false;
+    }
+    
+    // Delegate to NetworkProxyManager
+    return this.networkProxyBridge.requestCertificate(domain);
+  }
+  
+  /**
+   * Basic domain validation
+   */
+  private isValidDomain(domain: string): boolean {
+    // Very basic domain validation
+    if (!domain || domain.length === 0) {
+      return false;
+    }
+    
+    // Check for wildcard domains (they can't get ACME certs)
+    if (domain.includes('*')) {
+      console.log(`Wildcard domains like "${domain}" are not supported for ACME certificates`);
+      return false;
+    }
+    
+    // Check if domain has at least one dot and no invalid characters
+    const validDomainRegex = /^[a-zA-Z0-9]([a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?(\.[a-zA-Z0-9]([a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?)*$/;
+    if (!validDomainRegex.test(domain)) {
+      console.log(`Domain "${domain}" has invalid format`);
+      return false;
+    }
+    
+    return true;
+  }
+  
+  /**
+   * Get eligible domains for ACME certificates
+   */
+  public getEligibleDomains(): string[] {
+    // Collect all eligible domains from domain configs
+    const domains: string[] = [];
+    
+    for (const config of this.settings.domainConfigs) {
+      // Skip domains that can't be used with ACME
+      const eligibleDomains = config.domains.filter(domain => 
+        !domain.includes('*') && this.isValidDomain(domain)
+      );
+      
+      domains.push(...eligibleDomains);
+    }
+    
+    return domains;
+  }
+}

ts/classes.pp.connectionhandler.ts

@@ -0,0 +1,982 @@
+import * as plugins from './plugins.js';
+import type { IConnectionRecord, IDomainConfig, IPortProxySettings } from './classes.pp.interfaces.js';
+import { ConnectionManager } from './classes.pp.connectionmanager.js';
+import { SecurityManager } from './classes.pp.securitymanager.js';
+import { DomainConfigManager } from './classes.pp.domainconfigmanager.js';
+import { TlsManager } from './classes.pp.tlsmanager.js';
+import { NetworkProxyBridge } from './classes.pp.networkproxybridge.js';
+import { TimeoutManager } from './classes.pp.timeoutmanager.js';
+import { PortRangeManager } from './classes.pp.portrangemanager.js';
+
+/**
+ * Handles new connection processing and setup logic
+ */
+export class ConnectionHandler {
+  constructor(
+    private settings: IPortProxySettings,
+    private connectionManager: ConnectionManager,
+    private securityManager: SecurityManager,
+    private domainConfigManager: DomainConfigManager,
+    private tlsManager: TlsManager,
+    private networkProxyBridge: NetworkProxyBridge,
+    private timeoutManager: TimeoutManager,
+    private portRangeManager: PortRangeManager
+  ) {}
+
+  /**
+   * Handle a new incoming connection
+   */
+  public handleConnection(socket: plugins.net.Socket): void {
+    const remoteIP = socket.remoteAddress || '';
+    const localPort = socket.localPort || 0;
+
+    // Validate IP against rate limits and connection limits
+    const ipValidation = this.securityManager.validateIP(remoteIP);
+    if (!ipValidation.allowed) {
+      console.log(`Connection rejected from ${remoteIP}: ${ipValidation.reason}`);
+      socket.end();
+      socket.destroy();
+      return;
+    }
+
+    // Create a new connection record
+    const record = this.connectionManager.createConnection(socket);
+    const connectionId = record.id;
+
+    // Apply socket optimizations
+    socket.setNoDelay(this.settings.noDelay);
+
+    // Apply keep-alive settings if enabled
+    if (this.settings.keepAlive) {
+      socket.setKeepAlive(true, this.settings.keepAliveInitialDelay);
+      record.hasKeepAlive = true;
+
+      // Apply enhanced TCP keep-alive options if enabled
+      if (this.settings.enableKeepAliveProbes) {
+        try {
+          // These are platform-specific and may not be available
+          if ('setKeepAliveProbes' in socket) {
+            (socket as any).setKeepAliveProbes(10);
+          }
+          if ('setKeepAliveInterval' in socket) {
+            (socket as any).setKeepAliveInterval(1000);
+          }
+        } catch (err) {
+          // Ignore errors - these are optional enhancements
+          if (this.settings.enableDetailedLogging) {
+            console.log(`[${connectionId}] Enhanced TCP keep-alive settings not supported: ${err}`);
+          }
+        }
+      }
+    }
+
+    if (this.settings.enableDetailedLogging) {
+      console.log(
+        `[${connectionId}] New connection from ${remoteIP} on port ${localPort}. ` +
+        `Keep-Alive: ${record.hasKeepAlive ? 'Enabled' : 'Disabled'}. ` +
+        `Active connections: ${this.connectionManager.getConnectionCount()}`
+      );
+    } else {
+      console.log(
+        `New connection from ${remoteIP} on port ${localPort}. Active connections: ${this.connectionManager.getConnectionCount()}`
+      );
+    }
+
+    // Check if this connection should be forwarded directly to NetworkProxy
+    if (this.portRangeManager.shouldUseNetworkProxy(localPort)) {
+      this.handleNetworkProxyConnection(socket, record);
+    } else {
+      // For non-NetworkProxy ports, proceed with normal processing
+      this.handleStandardConnection(socket, record);
+    }
+  }
+
+  /**
+   * Handle a connection that should be forwarded to NetworkProxy
+   */
+  private handleNetworkProxyConnection(socket: plugins.net.Socket, record: IConnectionRecord): void {
+    const connectionId = record.id;
+    let initialDataReceived = false;
+
+    // Set an initial timeout for handshake data
+    let initialTimeout: NodeJS.Timeout | null = setTimeout(() => {
+      if (!initialDataReceived) {
+        console.log(
+          `[${connectionId}] Initial data warning (${this.settings.initialDataTimeout}ms) for connection from ${record.remoteIP}`
+        );
+        
+        // Add a grace period instead of immediate termination
+        setTimeout(() => {
+          if (!initialDataReceived) {
+            console.log(`[${connectionId}] Final initial data timeout after grace period`);
+            if (record.incomingTerminationReason === null) {
+              record.incomingTerminationReason = 'initial_timeout';
+              this.connectionManager.incrementTerminationStat('incoming', 'initial_timeout');
+            }
+            socket.end();
+            this.connectionManager.cleanupConnection(record, 'initial_timeout');
+          }
+        }, 30000); // 30 second grace period
+      }
+    }, this.settings.initialDataTimeout!);
+
+    // Make sure timeout doesn't keep the process alive
+    if (initialTimeout.unref) {
+      initialTimeout.unref();
+    }
+
+    // Set up error handler
+    socket.on('error', this.connectionManager.handleError('incoming', record));
+
+    // First data handler to capture initial TLS handshake for NetworkProxy
+    socket.once('data', (chunk: Buffer) => {
+      // Clear the initial timeout since we've received data
+      if (initialTimeout) {
+        clearTimeout(initialTimeout);
+        initialTimeout = null;
+      }
+
+      initialDataReceived = true;
+      record.hasReceivedInitialData = true;
+
+      // Block non-TLS connections on port 443
+      const localPort = record.localPort;
+      if (!this.tlsManager.isTlsHandshake(chunk) && localPort === 443) {
+        console.log(
+          `[${connectionId}] Non-TLS connection detected on port 443. ` +
+          `Terminating connection - only TLS traffic is allowed on standard HTTPS port.`
+        );
+        if (record.incomingTerminationReason === null) {
+          record.incomingTerminationReason = 'non_tls_blocked';
+          this.connectionManager.incrementTerminationStat('incoming', 'non_tls_blocked');
+        }
+        socket.end();
+        this.connectionManager.cleanupConnection(record, 'non_tls_blocked');
+        return;
+      }
+
+      // Check if this looks like a TLS handshake
+      if (this.tlsManager.isTlsHandshake(chunk)) {
+        record.isTLS = true;
+
+        // Check session tickets if they're disabled
+        if (this.settings.allowSessionTicket === false && this.tlsManager.isClientHello(chunk)) {
+          // Create connection info for SNI extraction
+          const connInfo = {
+            sourceIp: record.remoteIP,
+            sourcePort: socket.remotePort || 0,
+            destIp: socket.localAddress || '',
+            destPort: socket.localPort || 0,
+          };
+
+          // Extract SNI for domain-specific NetworkProxy handling
+          const serverName = this.tlsManager.extractSNI(chunk, connInfo);
+
+          if (serverName) {
+            // If we got an SNI, check for domain-specific NetworkProxy settings
+            const domainConfig = this.domainConfigManager.findDomainConfig(serverName);
+
+            // Save domain config and SNI in connection record
+            record.domainConfig = domainConfig;
+            record.lockedDomain = serverName;
+
+            // Use domain-specific NetworkProxy port if configured
+            if (domainConfig && this.domainConfigManager.shouldUseNetworkProxy(domainConfig)) {
+              const networkProxyPort = this.domainConfigManager.getNetworkProxyPort(domainConfig);
+
+              if (this.settings.enableDetailedLogging) {
+                console.log(
+                  `[${connectionId}] Using domain-specific NetworkProxy for ${serverName} on port ${networkProxyPort}`
+                );
+              }
+
+              // Forward to NetworkProxy with domain-specific port
+              this.networkProxyBridge.forwardToNetworkProxy(
+                connectionId,
+                socket,
+                record,
+                chunk,
+                networkProxyPort,
+                (reason) => this.connectionManager.initiateCleanupOnce(record, reason)
+              );
+              return;
+            }
+          }
+        }
+
+        // Forward directly to NetworkProxy without domain-specific settings
+        this.networkProxyBridge.forwardToNetworkProxy(
+          connectionId,
+          socket,
+          record,
+          chunk,
+          undefined,
+          (reason) => this.connectionManager.initiateCleanupOnce(record, reason)
+        );
+      } else {
+        // If not TLS, use normal direct connection
+        console.log(`[${connectionId}] Non-TLS connection on NetworkProxy port ${record.localPort}`);
+        this.setupDirectConnection(
+          socket,
+          record,
+          undefined,
+          undefined,
+          chunk
+        );
+      }
+    });
+  }
+
+  /**
+   * Handle a standard (non-NetworkProxy) connection
+   */
+  private handleStandardConnection(socket: plugins.net.Socket, record: IConnectionRecord): void {
+    const connectionId = record.id;
+    const localPort = record.localPort;
+
+    // Define helpers for rejecting connections
+    const rejectIncomingConnection = (reason: string, logMessage: string) => {
+      console.log(`[${connectionId}] ${logMessage}`);
+      socket.end();
+      if (record.incomingTerminationReason === null) {
+        record.incomingTerminationReason = reason;
+        this.connectionManager.incrementTerminationStat('incoming', reason);
+      }
+      this.connectionManager.cleanupConnection(record, reason);
+    };
+
+    let initialDataReceived = false;
+
+    // Set an initial timeout for SNI data if needed
+    let initialTimeout: NodeJS.Timeout | null = null;
+    if (this.settings.sniEnabled) {
+      initialTimeout = setTimeout(() => {
+        if (!initialDataReceived) {
+          console.log(
+            `[${connectionId}] Initial data warning (${this.settings.initialDataTimeout}ms) for connection from ${record.remoteIP}`
+          );
+          
+          // Add a grace period instead of immediate termination
+          setTimeout(() => {
+            if (!initialDataReceived) {
+              console.log(`[${connectionId}] Final initial data timeout after grace period`);
+              if (record.incomingTerminationReason === null) {
+                record.incomingTerminationReason = 'initial_timeout';
+                this.connectionManager.incrementTerminationStat('incoming', 'initial_timeout');
+              }
+              socket.end();
+              this.connectionManager.cleanupConnection(record, 'initial_timeout');
+            }
+          }, 30000); // 30 second grace period
+        }
+      }, this.settings.initialDataTimeout!);
+
+      // Make sure timeout doesn't keep the process alive
+      if (initialTimeout.unref) {
+        initialTimeout.unref();
+      }
+    } else {
+      initialDataReceived = true;
+      record.hasReceivedInitialData = true;
+    }
+
+    socket.on('error', this.connectionManager.handleError('incoming', record));
+
+    // Track data for bytes counting
+    socket.on('data', (chunk: Buffer) => {
+      record.bytesReceived += chunk.length;
+      this.timeoutManager.updateActivity(record);
+
+      // Check for TLS handshake if this is the first chunk
+      if (!record.isTLS && this.tlsManager.isTlsHandshake(chunk)) {
+        record.isTLS = true;
+
+        if (this.settings.enableTlsDebugLogging) {
+          console.log(
+            `[${connectionId}] TLS handshake detected from ${record.remoteIP}, ${chunk.length} bytes`
+          );
+        }
+      }
+    });
+
+    /**
+     * Sets up the connection to the target host.
+     */
+    const setupConnection = (
+      serverName: string,
+      initialChunk?: Buffer,
+      forcedDomain?: IDomainConfig,
+      overridePort?: number
+    ) => {
+      // Clear the initial timeout since we've received data
+      if (initialTimeout) {
+        clearTimeout(initialTimeout);
+        initialTimeout = null;
+      }
+
+      // Mark that we've received initial data
+      initialDataReceived = true;
+      record.hasReceivedInitialData = true;
+
+      // Check if this looks like a TLS handshake
+      if (initialChunk && this.tlsManager.isTlsHandshake(initialChunk)) {
+        record.isTLS = true;
+
+        if (this.settings.enableTlsDebugLogging) {
+          console.log(
+            `[${connectionId}] TLS handshake detected in setup, ${initialChunk.length} bytes`
+          );
+        }
+      }
+
+      // If a forcedDomain is provided (port-based routing), use it; otherwise, use SNI-based lookup.
+      const domainConfig = forcedDomain
+        ? forcedDomain
+        : serverName
+        ? this.domainConfigManager.findDomainConfig(serverName)
+        : undefined;
+
+      // Save domain config in connection record
+      record.domainConfig = domainConfig;
+
+      // Check if this domain should use NetworkProxy (domain-specific setting)
+      if (domainConfig && 
+          this.domainConfigManager.shouldUseNetworkProxy(domainConfig) && 
+          this.networkProxyBridge.getNetworkProxy()) {
+        
+        if (this.settings.enableDetailedLogging) {
+          console.log(
+            `[${connectionId}] Domain ${serverName} is configured to use NetworkProxy`
+          );
+        }
+
+        const networkProxyPort = this.domainConfigManager.getNetworkProxyPort(domainConfig);
+
+        if (initialChunk && record.isTLS) {
+          // For TLS connections with initial chunk, forward to NetworkProxy
+          this.networkProxyBridge.forwardToNetworkProxy(
+            connectionId,
+            socket,
+            record,
+            initialChunk,
+            networkProxyPort,
+            (reason) => this.connectionManager.initiateCleanupOnce(record, reason)
+          );
+          return; // Skip normal connection setup
+        }
+      }
+
+      // IP validation
+      if (domainConfig) {
+        const ipRules = this.domainConfigManager.getEffectiveIPRules(domainConfig);
+        
+        // Skip IP validation if allowedIPs is empty
+        if (
+          domainConfig.allowedIPs.length > 0 &&
+          !this.securityManager.isIPAuthorized(record.remoteIP, ipRules.allowedIPs, ipRules.blockedIPs)
+        ) {
+          return rejectIncomingConnection(
+            'rejected',
+            `Connection rejected: IP ${record.remoteIP} not allowed for domain ${domainConfig.domains.join(
+              ', '
+            )}`
+          );
+        }
+      } else if (
+        this.settings.defaultAllowedIPs &&
+        this.settings.defaultAllowedIPs.length > 0
+      ) {
+        if (
+          !this.securityManager.isIPAuthorized(
+            record.remoteIP,
+            this.settings.defaultAllowedIPs,
+            this.settings.defaultBlockedIPs || []
+          )
+        ) {
+          return rejectIncomingConnection(
+            'rejected',
+            `Connection rejected: IP ${record.remoteIP} not allowed by default allowed list`
+          );
+        }
+      }
+
+      // Save the initial SNI
+      if (serverName) {
+        record.lockedDomain = serverName;
+      }
+
+      // Set up the direct connection
+      this.setupDirectConnection(
+        socket,
+        record,
+        domainConfig,
+        serverName,
+        initialChunk,
+        overridePort
+      );
+    };
+
+    // --- PORT RANGE-BASED HANDLING ---
+    // Only apply port-based rules if the incoming port is within one of the global port ranges.
+    if (this.portRangeManager.isPortInGlobalRanges(localPort)) {
+      if (this.portRangeManager.shouldUseGlobalForwarding(localPort)) {
+        if (
+          this.settings.defaultAllowedIPs &&
+          this.settings.defaultAllowedIPs.length > 0 &&
+          !this.securityManager.isIPAuthorized(record.remoteIP, this.settings.defaultAllowedIPs)
+        ) {
+          console.log(
+            `[${connectionId}] Connection from ${record.remoteIP} rejected: IP ${record.remoteIP} not allowed in global default allowed list.`
+          );
+          socket.end();
+          return;
+        }
+        if (this.settings.enableDetailedLogging) {
+          console.log(
+            `[${connectionId}] Port-based connection from ${record.remoteIP} on port ${localPort} forwarded to global target IP ${this.settings.targetIP}.`
+          );
+        }
+        setupConnection(
+          '',
+          undefined,
+          {
+            domains: ['global'],
+            allowedIPs: this.settings.defaultAllowedIPs || [],
+            blockedIPs: this.settings.defaultBlockedIPs || [],
+            targetIPs: [this.settings.targetIP!],
+            portRanges: [],
+          },
+          localPort
+        );
+        return;
+      } else {
+        // Attempt to find a matching forced domain config based on the local port.
+        const forcedDomain = this.domainConfigManager.findDomainConfigForPort(localPort);
+        
+        if (forcedDomain) {
+          const ipRules = this.domainConfigManager.getEffectiveIPRules(forcedDomain);
+          
+          if (!this.securityManager.isIPAuthorized(record.remoteIP, ipRules.allowedIPs, ipRules.blockedIPs)) {
+            console.log(
+              `[${connectionId}] Connection from ${record.remoteIP} rejected: IP not allowed for domain ${forcedDomain.domains.join(
+                ', '
+              )} on port ${localPort}.`
+            );
+            socket.end();
+            return;
+          }
+          
+          if (this.settings.enableDetailedLogging) {
+            console.log(
+              `[${connectionId}] Port-based connection from ${record.remoteIP} on port ${localPort} matched domain ${forcedDomain.domains.join(
+                ', '
+              )}.`
+            );
+          }
+          
+          setupConnection('', undefined, forcedDomain, localPort);
+          return;
+        }
+        // Fall through to SNI/default handling if no forced domain config is found.
+      }
+    }
+
+    // --- FALLBACK: SNI-BASED HANDLING (or default when SNI is disabled) ---
+    if (this.settings.sniEnabled) {
+      initialDataReceived = false;
+
+      socket.once('data', (chunk: Buffer) => {
+        // Clear timeout immediately
+        if (initialTimeout) {
+          clearTimeout(initialTimeout);
+          initialTimeout = null;
+        }
+        
+        initialDataReceived = true;
+        
+        // Block non-TLS connections on port 443
+        if (!this.tlsManager.isTlsHandshake(chunk) && localPort === 443) {
+          console.log(
+            `[${connectionId}] Non-TLS connection detected on port 443 in SNI handler. ` +
+            `Terminating connection - only TLS traffic is allowed on standard HTTPS port.`
+          );
+          if (record.incomingTerminationReason === null) {
+            record.incomingTerminationReason = 'non_tls_blocked';
+            this.connectionManager.incrementTerminationStat('incoming', 'non_tls_blocked');
+          }
+          socket.end();
+          this.connectionManager.cleanupConnection(record, 'non_tls_blocked');
+          return;
+        }
+
+        // Try to extract SNI
+        let serverName = '';
+
+        if (this.tlsManager.isTlsHandshake(chunk)) {
+          record.isTLS = true;
+
+          if (this.settings.enableTlsDebugLogging) {
+            console.log(
+              `[${connectionId}] Extracting SNI from TLS handshake, ${chunk.length} bytes`
+            );
+          }
+
+          // Create connection info object for SNI extraction
+          const connInfo = {
+            sourceIp: record.remoteIP,
+            sourcePort: socket.remotePort || 0,
+            destIp: socket.localAddress || '',
+            destPort: socket.localPort || 0,
+          };
+
+          // Extract SNI
+          serverName = this.tlsManager.extractSNI(chunk, connInfo) || '';
+        }
+
+        // Lock the connection to the negotiated SNI.
+        record.lockedDomain = serverName;
+
+        if (this.settings.enableDetailedLogging) {
+          console.log(
+            `[${connectionId}] Received connection from ${record.remoteIP} with SNI: ${
+              serverName || '(empty)'
+            }`
+          );
+        }
+
+        setupConnection(serverName, chunk);
+      });
+    } else {
+      initialDataReceived = true;
+      record.hasReceivedInitialData = true;
+
+      if (
+        this.settings.defaultAllowedIPs &&
+        this.settings.defaultAllowedIPs.length > 0 &&
+        !this.securityManager.isIPAuthorized(record.remoteIP, this.settings.defaultAllowedIPs)
+      ) {
+        return rejectIncomingConnection(
+          'rejected',
+          `Connection rejected: IP ${record.remoteIP} not allowed for non-SNI connection`
+        );
+      }
+
+      setupConnection('');
+    }
+  }
+
+  /**
+   * Sets up a direct connection to the target
+   */
+  private setupDirectConnection(
+    socket: plugins.net.Socket,
+    record: IConnectionRecord,
+    domainConfig?: IDomainConfig,
+    serverName?: string,
+    initialChunk?: Buffer,
+    overridePort?: number
+  ): void {
+    const connectionId = record.id;
+    
+    // Determine target host
+    const targetHost = domainConfig 
+      ? this.domainConfigManager.getTargetIP(domainConfig) 
+      : this.settings.targetIP!;
+    
+    // Determine target port
+    const targetPort = overridePort !== undefined 
+      ? overridePort 
+      : this.settings.toPort;
+    
+    // Setup connection options
+    const connectionOptions: plugins.net.NetConnectOpts = {
+      host: targetHost,
+      port: targetPort,
+    };
+    
+    // Preserve source IP if configured
+    if (this.settings.preserveSourceIP) {
+      connectionOptions.localAddress = record.remoteIP.replace('::ffff:', '');
+    }
+
+    // Create a safe queue for incoming data
+    const dataQueue: Buffer[] = [];
+    let queueSize = 0;
+    let processingQueue = false;
+    let drainPending = false;
+    let pipingEstablished = false;
+
+    // Pause the incoming socket to prevent buffer overflows
+    socket.pause();
+
+    // Function to safely process the data queue without losing events
+    const processDataQueue = () => {
+      if (processingQueue || dataQueue.length === 0 || pipingEstablished) return;
+
+      processingQueue = true;
+
+      try {
+        // Process all queued chunks with the current active handler
+        while (dataQueue.length > 0) {
+          const chunk = dataQueue.shift()!;
+          queueSize -= chunk.length;
+
+          // Once piping is established, we shouldn't get here,
+          // but just in case, pass to the outgoing socket directly
+          if (pipingEstablished && record.outgoing) {
+            record.outgoing.write(chunk);
+            continue;
+          }
+
+          // Track bytes received
+          record.bytesReceived += chunk.length;
+
+          // Check for TLS handshake
+          if (!record.isTLS && this.tlsManager.isTlsHandshake(chunk)) {
+            record.isTLS = true;
+
+            if (this.settings.enableTlsDebugLogging) {
+              console.log(
+                `[${connectionId}] TLS handshake detected in tempDataHandler, ${chunk.length} bytes`
+              );
+            }
+          }
+
+          // Check if adding this chunk would exceed the buffer limit
+          const newSize = record.pendingDataSize + chunk.length;
+
+          if (this.settings.maxPendingDataSize && newSize > this.settings.maxPendingDataSize) {
+            console.log(
+              `[${connectionId}] Buffer limit exceeded for connection from ${record.remoteIP}: ${newSize} bytes > ${this.settings.maxPendingDataSize} bytes`
+            );
+            socket.end(); // Gracefully close the socket
+            this.connectionManager.initiateCleanupOnce(record, 'buffer_limit_exceeded');
+            return;
+          }
+
+          // Buffer the chunk and update the size counter
+          record.pendingData.push(Buffer.from(chunk));
+          record.pendingDataSize = newSize;
+          this.timeoutManager.updateActivity(record);
+        }
+      } finally {
+        processingQueue = false;
+
+        // If there's a pending drain and we've processed everything,
+        // signal we're ready for more data if we haven't established piping yet
+        if (drainPending && dataQueue.length === 0 && !pipingEstablished) {
+          drainPending = false;
+          socket.resume();
+        }
+      }
+    };
+
+    // Unified data handler that safely queues incoming data
+    const safeDataHandler = (chunk: Buffer) => {
+      // If piping is already established, just let the pipe handle it
+      if (pipingEstablished) return;
+
+      // Add to our queue for orderly processing
+      dataQueue.push(Buffer.from(chunk)); // Make a copy to be safe
+      queueSize += chunk.length;
+
+      // If queue is getting large, pause socket until we catch up
+      if (this.settings.maxPendingDataSize && queueSize > this.settings.maxPendingDataSize * 0.8) {
+        socket.pause();
+        drainPending = true;
+      }
+
+      // Process the queue
+      processDataQueue();
+    };
+
+    // Add our safe data handler
+    socket.on('data', safeDataHandler);
+
+    // Add initial chunk to pending data if present
+    if (initialChunk) {
+      record.bytesReceived += initialChunk.length;
+      record.pendingData.push(Buffer.from(initialChunk));
+      record.pendingDataSize = initialChunk.length;
+    }
+
+    // Create the target socket but don't set up piping immediately
+    const targetSocket = plugins.net.connect(connectionOptions);
+    record.outgoing = targetSocket;
+    record.outgoingStartTime = Date.now();
+
+    // Apply socket optimizations
+    targetSocket.setNoDelay(this.settings.noDelay);
+
+    // Apply keep-alive settings to the outgoing connection as well
+    if (this.settings.keepAlive) {
+      targetSocket.setKeepAlive(true, this.settings.keepAliveInitialDelay);
+
+      // Apply enhanced TCP keep-alive options if enabled
+      if (this.settings.enableKeepAliveProbes) {
+        try {
+          if ('setKeepAliveProbes' in targetSocket) {
+            (targetSocket as any).setKeepAliveProbes(10);
+          }
+          if ('setKeepAliveInterval' in targetSocket) {
+            (targetSocket as any).setKeepAliveInterval(1000);
+          }
+        } catch (err) {
+          // Ignore errors - these are optional enhancements
+          if (this.settings.enableDetailedLogging) {
+            console.log(
+              `[${connectionId}] Enhanced TCP keep-alive not supported for outgoing socket: ${err}`
+            );
+          }
+        }
+      }
+    }
+
+    // Setup specific error handler for connection phase
+    targetSocket.once('error', (err) => {
+      // This handler runs only once during the initial connection phase
+      const code = (err as any).code;
+      console.log(
+        `[${connectionId}] Connection setup error to ${targetHost}:${connectionOptions.port}: ${err.message} (${code})`
+      );
+
+      // Resume the incoming socket to prevent it from hanging
+      socket.resume();
+
+      if (code === 'ECONNREFUSED') {
+        console.log(
+          `[${connectionId}] Target ${targetHost}:${connectionOptions.port} refused connection`
+        );
+      } else if (code === 'ETIMEDOUT') {
+        console.log(
+          `[${connectionId}] Connection to ${targetHost}:${connectionOptions.port} timed out`
+        );
+      } else if (code === 'ECONNRESET') {
+        console.log(
+          `[${connectionId}] Connection to ${targetHost}:${connectionOptions.port} was reset`
+        );
+      } else if (code === 'EHOSTUNREACH') {
+        console.log(`[${connectionId}] Host ${targetHost} is unreachable`);
+      }
+
+      // Clear any existing error handler after connection phase
+      targetSocket.removeAllListeners('error');
+
+      // Re-add the normal error handler for established connections
+      targetSocket.on('error', this.connectionManager.handleError('outgoing', record));
+
+      if (record.outgoingTerminationReason === null) {
+        record.outgoingTerminationReason = 'connection_failed';
+        this.connectionManager.incrementTerminationStat('outgoing', 'connection_failed');
+      }
+
+      // Clean up the connection
+      this.connectionManager.initiateCleanupOnce(record, `connection_failed_${code}`);
+    });
+
+    // Setup close handler
+    targetSocket.on('close', this.connectionManager.handleClose('outgoing', record));
+    socket.on('close', this.connectionManager.handleClose('incoming', record));
+
+    // Handle timeouts with keep-alive awareness
+    socket.on('timeout', () => {
+      // For keep-alive connections, just log a warning instead of closing
+      if (record.hasKeepAlive) {
+        console.log(
+          `[${connectionId}] Timeout event on incoming keep-alive connection from ${
+            record.remoteIP
+          } after ${plugins.prettyMs(
+            this.settings.socketTimeout || 3600000
+          )}. Connection preserved.`
+        );
+        return;
+      }
+
+      // For non-keep-alive connections, proceed with normal cleanup
+      console.log(
+        `[${connectionId}] Timeout on incoming side from ${
+          record.remoteIP
+        } after ${plugins.prettyMs(this.settings.socketTimeout || 3600000)}`
+      );
+      if (record.incomingTerminationReason === null) {
+        record.incomingTerminationReason = 'timeout';
+        this.connectionManager.incrementTerminationStat('incoming', 'timeout');
+      }
+      this.connectionManager.initiateCleanupOnce(record, 'timeout_incoming');
+    });
+
+    targetSocket.on('timeout', () => {
+      // For keep-alive connections, just log a warning instead of closing
+      if (record.hasKeepAlive) {
+        console.log(
+          `[${connectionId}] Timeout event on outgoing keep-alive connection from ${
+            record.remoteIP
+          } after ${plugins.prettyMs(
+            this.settings.socketTimeout || 3600000
+          )}. Connection preserved.`
+        );
+        return;
+      }
+
+      // For non-keep-alive connections, proceed with normal cleanup
+      console.log(
+        `[${connectionId}] Timeout on outgoing side from ${
+          record.remoteIP
+        } after ${plugins.prettyMs(this.settings.socketTimeout || 3600000)}`
+      );
+      if (record.outgoingTerminationReason === null) {
+        record.outgoingTerminationReason = 'timeout';
+        this.connectionManager.incrementTerminationStat('outgoing', 'timeout');
+      }
+      this.connectionManager.initiateCleanupOnce(record, 'timeout_outgoing');
+    });
+
+    // Apply socket timeouts
+    this.timeoutManager.applySocketTimeouts(record);
+
+    // Track outgoing data for bytes counting
+    targetSocket.on('data', (chunk: Buffer) => {
+      record.bytesSent += chunk.length;
+      this.timeoutManager.updateActivity(record);
+    });
+
+    // Wait for the outgoing connection to be ready before setting up piping
+    targetSocket.once('connect', () => {
+      // Clear the initial connection error handler
+      targetSocket.removeAllListeners('error');
+
+      // Add the normal error handler for established connections
+      targetSocket.on('error', this.connectionManager.handleError('outgoing', record));
+
+      // Process any remaining data in the queue before switching to piping
+      processDataQueue();
+      
+      // Set up piping immediately
+      pipingEstablished = true;
+      
+      // Flush all pending data to target
+      if (record.pendingData.length > 0) {
+        const combinedData = Buffer.concat(record.pendingData);
+        
+        if (this.settings.enableDetailedLogging) {
+          console.log(`[${connectionId}] Forwarding ${combinedData.length} bytes of initial data to target`);
+        }
+        
+        // Write pending data immediately
+        targetSocket.write(combinedData, (err) => {
+          if (err) {
+            console.log(`[${connectionId}] Error writing pending data to target: ${err.message}`);
+            return this.connectionManager.initiateCleanupOnce(record, 'write_error');
+          }
+        });
+        
+        // Clear the buffer now that we've processed it
+        record.pendingData = [];
+        record.pendingDataSize = 0;
+      }
+      
+      // Setup piping in both directions without any delays
+      socket.pipe(targetSocket);
+      targetSocket.pipe(socket);
+      
+      // Resume the socket to ensure data flows
+      socket.resume();
+      
+      // Process any data that might be queued in the interim
+      if (dataQueue.length > 0) {
+        // Write any remaining queued data directly to the target socket
+        for (const chunk of dataQueue) {
+          targetSocket.write(chunk);
+        }
+        // Clear the queue
+        dataQueue.length = 0;
+        queueSize = 0;
+      }
+      
+      if (this.settings.enableDetailedLogging) {
+        console.log(
+          `[${connectionId}] Connection established: ${record.remoteIP} -> ${targetHost}:${connectionOptions.port}` +
+            `${
+              serverName
+                ? ` (SNI: ${serverName})`
+                : domainConfig
+                ? ` (Port-based for domain: ${domainConfig.domains.join(', ')})`
+                : ''
+            }` +
+            ` TLS: ${record.isTLS ? 'Yes' : 'No'}, Keep-Alive: ${
+              record.hasKeepAlive ? 'Yes' : 'No'
+            }`
+        );
+      } else {
+        console.log(
+          `Connection established: ${record.remoteIP} -> ${targetHost}:${connectionOptions.port}` +
+            `${
+              serverName
+                ? ` (SNI: ${serverName})`
+                : domainConfig
+                ? ` (Port-based for domain: ${domainConfig.domains.join(', ')})`
+                : ''
+            }`
+        );
+      }
+
+      // Add the renegotiation handler for SNI validation
+      if (serverName) {
+        // Create connection info object for the existing connection
+        const connInfo = {
+          sourceIp: record.remoteIP,
+          sourcePort: record.incoming.remotePort || 0,
+          destIp: record.incoming.localAddress || '',
+          destPort: record.incoming.localPort || 0,
+        };
+
+        // Create a renegotiation handler function
+        const renegotiationHandler = this.tlsManager.createRenegotiationHandler(
+          connectionId,
+          serverName,
+          connInfo,
+          (connectionId, reason) => this.connectionManager.initiateCleanupOnce(record, reason)
+        );
+
+        // Store the handler in the connection record so we can remove it during cleanup
+        record.renegotiationHandler = renegotiationHandler;
+
+        // Add the handler to the socket
+        socket.on('data', renegotiationHandler);
+
+        if (this.settings.enableDetailedLogging) {
+          console.log(
+            `[${connectionId}] TLS renegotiation handler installed for SNI domain: ${serverName}`
+          );
+          if (this.settings.allowSessionTicket === false) {
+            console.log(
+              `[${connectionId}] Session ticket usage is disabled. Connection will be reset on reconnection attempts.`
+            );
+          }
+        }
+      }
+
+      // Set connection timeout
+      record.cleanupTimer = this.timeoutManager.setupConnectionTimeout(
+        record,
+        (record, reason) => {
+          console.log(
+            `[${connectionId}] Connection from ${record.remoteIP} exceeded max lifetime, forcing cleanup.`
+          );
+          this.connectionManager.initiateCleanupOnce(record, reason);
+        }
+      );
+
+      // Mark TLS handshake as complete for TLS connections
+      if (record.isTLS) {
+        record.tlsHandshakeComplete = true;
+
+        if (this.settings.enableTlsDebugLogging) {
+          console.log(
+            `[${connectionId}] TLS handshake complete for connection from ${record.remoteIP}`
+          );
+        }
+      }
+    });
+  }
+}

ts/classes.pp.connectionmanager.ts

@@ -0,0 +1,446 @@
+import * as plugins from './plugins.js';
+import type { IConnectionRecord, IPortProxySettings } from './classes.pp.interfaces.js';
+import { SecurityManager } from './classes.pp.securitymanager.js';
+import { TimeoutManager } from './classes.pp.timeoutmanager.js';
+
+/**
+ * Manages connection lifecycle, tracking, and cleanup
+ */
+export class ConnectionManager {
+  private connectionRecords: Map<string, IConnectionRecord> = new Map();
+  private terminationStats: {
+    incoming: Record<string, number>;
+    outgoing: Record<string, number>;
+  } = { incoming: {}, outgoing: {} };
+  
+  constructor(
+    private settings: IPortProxySettings,
+    private securityManager: SecurityManager,
+    private timeoutManager: TimeoutManager
+  ) {}
+  
+  /**
+   * Generate a unique connection ID
+   */
+  public generateConnectionId(): string {
+    return Math.random().toString(36).substring(2, 15) + 
+           Math.random().toString(36).substring(2, 15);
+  }
+  
+  /**
+   * Create and track a new connection
+   */
+  public createConnection(socket: plugins.net.Socket): IConnectionRecord {
+    const connectionId = this.generateConnectionId();
+    const remoteIP = socket.remoteAddress || '';
+    const localPort = socket.localPort || 0;
+
+    const record: IConnectionRecord = {
+      id: connectionId,
+      incoming: socket,
+      outgoing: null,
+      incomingStartTime: Date.now(),
+      lastActivity: Date.now(),
+      connectionClosed: false,
+      pendingData: [],
+      pendingDataSize: 0,
+      bytesReceived: 0,
+      bytesSent: 0,
+      remoteIP,
+      localPort,
+      isTLS: false,
+      tlsHandshakeComplete: false,
+      hasReceivedInitialData: false,
+      hasKeepAlive: false,
+      incomingTerminationReason: null,
+      outgoingTerminationReason: null,
+      usingNetworkProxy: false,
+      isBrowserConnection: false,
+      domainSwitches: 0
+    };
+    
+    this.trackConnection(connectionId, record);
+    return record;
+  }
+  
+  /**
+   * Track an existing connection
+   */
+  public trackConnection(connectionId: string, record: IConnectionRecord): void {
+    this.connectionRecords.set(connectionId, record);
+    this.securityManager.trackConnectionByIP(record.remoteIP, connectionId);
+  }
+  
+  /**
+   * Get a connection by ID
+   */
+  public getConnection(connectionId: string): IConnectionRecord | undefined {
+    return this.connectionRecords.get(connectionId);
+  }
+  
+  /**
+   * Get all active connections
+   */
+  public getConnections(): Map<string, IConnectionRecord> {
+    return this.connectionRecords;
+  }
+  
+  /**
+   * Get count of active connections
+   */
+  public getConnectionCount(): number {
+    return this.connectionRecords.size;
+  }
+  
+  /**
+   * Initiates cleanup once for a connection
+   */
+  public initiateCleanupOnce(record: IConnectionRecord, reason: string = 'normal'): void {
+    if (this.settings.enableDetailedLogging) {
+      console.log(`[${record.id}] Connection cleanup initiated for ${record.remoteIP} (${reason})`);
+    }
+
+    if (
+      record.incomingTerminationReason === null ||
+      record.incomingTerminationReason === undefined
+    ) {
+      record.incomingTerminationReason = reason;
+      this.incrementTerminationStat('incoming', reason);
+    }
+
+    this.cleanupConnection(record, reason);
+  }
+  
+  /**
+   * Clean up a connection record
+   */
+  public cleanupConnection(record: IConnectionRecord, reason: string = 'normal'): void {
+    if (!record.connectionClosed) {
+      record.connectionClosed = true;
+
+      // Track connection termination
+      this.securityManager.removeConnectionByIP(record.remoteIP, record.id);
+
+      if (record.cleanupTimer) {
+        clearTimeout(record.cleanupTimer);
+        record.cleanupTimer = undefined;
+      }
+
+      // Detailed logging data
+      const duration = Date.now() - record.incomingStartTime;
+      const bytesReceived = record.bytesReceived;
+      const bytesSent = record.bytesSent;
+
+      // Remove all data handlers to make sure we clean up properly
+      if (record.incoming) {
+        try {
+          // Remove our safe data handler
+          record.incoming.removeAllListeners('data');
+          // Reset the handler references
+          record.renegotiationHandler = undefined;
+        } catch (err) {
+          console.log(`[${record.id}] Error removing data handlers: ${err}`);
+        }
+      }
+
+      // Handle incoming socket
+      this.cleanupSocket(record, 'incoming', record.incoming);
+      
+      // Handle outgoing socket
+      if (record.outgoing) {
+        this.cleanupSocket(record, 'outgoing', record.outgoing);
+      }
+
+      // Clear pendingData to avoid memory leaks
+      record.pendingData = [];
+      record.pendingDataSize = 0;
+
+      // Remove the record from the tracking map
+      this.connectionRecords.delete(record.id);
+
+      // Log connection details
+      if (this.settings.enableDetailedLogging) {
+        console.log(
+          `[${record.id}] Connection from ${record.remoteIP} on port ${record.localPort} terminated (${reason}).` +
+            ` Duration: ${plugins.prettyMs(duration)}, Bytes IN: ${bytesReceived}, OUT: ${bytesSent}, ` +
+            `TLS: ${record.isTLS ? 'Yes' : 'No'}, Keep-Alive: ${record.hasKeepAlive ? 'Yes' : 'No'}` +
+            `${record.usingNetworkProxy ? ', Using NetworkProxy' : ''}` +
+            `${record.domainSwitches ? `, Domain switches: ${record.domainSwitches}` : ''}`
+        );
+      } else {
+        console.log(
+          `[${record.id}] Connection from ${record.remoteIP} terminated (${reason}). Active connections: ${this.connectionRecords.size}`
+        );
+      }
+    }
+  }
+  
+  /**
+   * Helper method to clean up a socket
+   */
+  private cleanupSocket(record: IConnectionRecord, side: 'incoming' | 'outgoing', socket: plugins.net.Socket): void {
+    try {
+      if (!socket.destroyed) {
+        // Try graceful shutdown first, then force destroy after a short timeout
+        socket.end();
+        const socketTimeout = setTimeout(() => {
+          try {
+            if (!socket.destroyed) {
+              socket.destroy();
+            }
+          } catch (err) {
+            console.log(`[${record.id}] Error destroying ${side} socket: ${err}`);
+          }
+        }, 1000);
+
+        // Ensure the timeout doesn't block Node from exiting
+        if (socketTimeout.unref) {
+          socketTimeout.unref();
+        }
+      }
+    } catch (err) {
+      console.log(`[${record.id}] Error closing ${side} socket: ${err}`);
+      try {
+        if (!socket.destroyed) {
+          socket.destroy();
+        }
+      } catch (destroyErr) {
+        console.log(`[${record.id}] Error destroying ${side} socket: ${destroyErr}`);
+      }
+    }
+  }
+  
+  /**
+   * Creates a generic error handler for incoming or outgoing sockets
+   */
+  public handleError(side: 'incoming' | 'outgoing', record: IConnectionRecord) {
+    return (err: Error) => {
+      const code = (err as any).code;
+      let reason = 'error';
+
+      const now = Date.now();
+      const connectionDuration = now - record.incomingStartTime;
+      const lastActivityAge = now - record.lastActivity;
+
+      if (code === 'ECONNRESET') {
+        reason = 'econnreset';
+        console.log(
+          `[${record.id}] ECONNRESET on ${side} side from ${record.remoteIP}: ${err.message}. ` +
+          `Duration: ${plugins.prettyMs(connectionDuration)}, Last activity: ${plugins.prettyMs(lastActivityAge)} ago`
+        );
+      } else if (code === 'ETIMEDOUT') {
+        reason = 'etimedout';
+        console.log(
+          `[${record.id}] ETIMEDOUT on ${side} side from ${record.remoteIP}: ${err.message}. ` +
+          `Duration: ${plugins.prettyMs(connectionDuration)}, Last activity: ${plugins.prettyMs(lastActivityAge)} ago`
+        );
+      } else {
+        console.log(
+          `[${record.id}] Error on ${side} side from ${record.remoteIP}: ${err.message}. ` +
+          `Duration: ${plugins.prettyMs(connectionDuration)}, Last activity: ${plugins.prettyMs(lastActivityAge)} ago`
+        );
+      }
+
+      if (side === 'incoming' && record.incomingTerminationReason === null) {
+        record.incomingTerminationReason = reason;
+        this.incrementTerminationStat('incoming', reason);
+      } else if (side === 'outgoing' && record.outgoingTerminationReason === null) {
+        record.outgoingTerminationReason = reason;
+        this.incrementTerminationStat('outgoing', reason);
+      }
+
+      this.initiateCleanupOnce(record, reason);
+    };
+  }
+  
+  /**
+   * Creates a generic close handler for incoming or outgoing sockets
+   */
+  public handleClose(side: 'incoming' | 'outgoing', record: IConnectionRecord) {
+    return () => {
+      if (this.settings.enableDetailedLogging) {
+        console.log(`[${record.id}] Connection closed on ${side} side from ${record.remoteIP}`);
+      }
+
+      if (side === 'incoming' && record.incomingTerminationReason === null) {
+        record.incomingTerminationReason = 'normal';
+        this.incrementTerminationStat('incoming', 'normal');
+      } else if (side === 'outgoing' && record.outgoingTerminationReason === null) {
+        record.outgoingTerminationReason = 'normal';
+        this.incrementTerminationStat('outgoing', 'normal');
+        // Record the time when outgoing socket closed.
+        record.outgoingClosedTime = Date.now();
+      }
+
+      this.initiateCleanupOnce(record, 'closed_' + side);
+    };
+  }
+  
+  /**
+   * Increment termination statistics
+   */
+  public incrementTerminationStat(side: 'incoming' | 'outgoing', reason: string): void {
+    this.terminationStats[side][reason] = (this.terminationStats[side][reason] || 0) + 1;
+  }
+  
+  /**
+   * Get termination statistics
+   */
+  public getTerminationStats(): { incoming: Record<string, number>; outgoing: Record<string, number> } {
+    return this.terminationStats;
+  }
+  
+  /**
+   * Check for stalled/inactive connections
+   */
+  public performInactivityCheck(): void {
+    const now = Date.now();
+    const connectionIds = [...this.connectionRecords.keys()];
+    
+    for (const id of connectionIds) {
+      const record = this.connectionRecords.get(id);
+      if (!record) continue;
+
+      // Skip inactivity check if disabled or for immortal keep-alive connections
+      if (
+        this.settings.disableInactivityCheck ||
+        (record.hasKeepAlive && this.settings.keepAliveTreatment === 'immortal')
+      ) {
+        continue;
+      }
+      
+      const inactivityTime = now - record.lastActivity;
+
+      // Use extended timeout for extended-treatment keep-alive connections
+      let effectiveTimeout = this.settings.inactivityTimeout!;
+      if (record.hasKeepAlive && this.settings.keepAliveTreatment === 'extended') {
+        const multiplier = this.settings.keepAliveInactivityMultiplier || 6;
+        effectiveTimeout = effectiveTimeout * multiplier;
+      }
+
+      if (inactivityTime > effectiveTimeout && !record.connectionClosed) {
+        // For keep-alive connections, issue a warning first
+        if (record.hasKeepAlive && !record.inactivityWarningIssued) {
+          console.log(
+            `[${id}] Warning: Keep-alive connection from ${record.remoteIP} inactive for ${
+              plugins.prettyMs(inactivityTime)
+            }. Will close in 10 minutes if no activity.`
+          );
+
+          // Set warning flag and add grace period
+          record.inactivityWarningIssued = true;
+          record.lastActivity = now - (effectiveTimeout - 600000);
+
+          // Try to stimulate activity with a probe packet
+          if (record.outgoing && !record.outgoing.destroyed) {
+            try {
+              record.outgoing.write(Buffer.alloc(0));
+
+              if (this.settings.enableDetailedLogging) {
+                console.log(`[${id}] Sent probe packet to test keep-alive connection`);
+              }
+            } catch (err) {
+              console.log(`[${id}] Error sending probe packet: ${err}`);
+            }
+          }
+        } else {
+          // For non-keep-alive or after warning, close the connection
+          console.log(
+            `[${id}] Inactivity check: No activity on connection from ${record.remoteIP} ` +
+            `for ${plugins.prettyMs(inactivityTime)}.` +
+            (record.hasKeepAlive ? ' Despite keep-alive being enabled.' : '')
+          );
+          this.cleanupConnection(record, 'inactivity');
+        }
+      } else if (inactivityTime <= effectiveTimeout && record.inactivityWarningIssued) {
+        // If activity detected after warning, clear the warning
+        if (this.settings.enableDetailedLogging) {
+          console.log(
+            `[${id}] Connection activity detected after inactivity warning, resetting warning`
+          );
+        }
+        record.inactivityWarningIssued = false;
+      }
+      
+      // Parity check: if outgoing socket closed and incoming remains active
+      if (
+        record.outgoingClosedTime &&
+        !record.incoming.destroyed &&
+        !record.connectionClosed &&
+        now - record.outgoingClosedTime > 120000
+      ) {
+        console.log(
+          `[${id}] Parity check: Incoming socket for ${record.remoteIP} still active ${
+            plugins.prettyMs(now - record.outgoingClosedTime)
+          } after outgoing closed.`
+        );
+        this.cleanupConnection(record, 'parity_check');
+      }
+    }
+  }
+  
+  /**
+   * Clear all connections (for shutdown)
+   */
+  public clearConnections(): void {
+    // Create a copy of the keys to avoid modification during iteration
+    const connectionIds = [...this.connectionRecords.keys()];
+    
+    // First pass: End all connections gracefully
+    for (const id of connectionIds) {
+      const record = this.connectionRecords.get(id);
+      if (record) {
+        try {
+          // Clear any timers
+          if (record.cleanupTimer) {
+            clearTimeout(record.cleanupTimer);
+            record.cleanupTimer = undefined;
+          }
+
+          // End sockets gracefully
+          if (record.incoming && !record.incoming.destroyed) {
+            record.incoming.end();
+          }
+
+          if (record.outgoing && !record.outgoing.destroyed) {
+            record.outgoing.end();
+          }
+        } catch (err) {
+          console.log(`Error during graceful connection end for ${id}: ${err}`);
+        }
+      }
+    }
+
+    // Short delay to allow graceful ends to process
+    setTimeout(() => {
+      // Second pass: Force destroy everything
+      for (const id of connectionIds) {
+        const record = this.connectionRecords.get(id);
+        if (record) {
+          try {
+            // Remove all listeners to prevent memory leaks
+            if (record.incoming) {
+              record.incoming.removeAllListeners();
+              if (!record.incoming.destroyed) {
+                record.incoming.destroy();
+              }
+            }
+
+            if (record.outgoing) {
+              record.outgoing.removeAllListeners();
+              if (!record.outgoing.destroyed) {
+                record.outgoing.destroy();
+              }
+            }
+          } catch (err) {
+            console.log(`Error during forced connection destruction for ${id}: ${err}`);
+          }
+        }
+      }
+      
+      // Clear all maps
+      this.connectionRecords.clear();
+      this.terminationStats = { incoming: {}, outgoing: {} };
+    }, 100);
+  }
+}

ts/classes.pp.domainconfigmanager.ts

@@ -0,0 +1,123 @@
+import * as plugins from './plugins.js';
+import type { IDomainConfig, IPortProxySettings } from './classes.pp.interfaces.js';
+
+/**
+ * Manages domain configurations and target selection
+ */
+export class DomainConfigManager {
+  // Track round-robin indices for domain configs
+  private domainTargetIndices: Map<IDomainConfig, number> = new Map();
+  
+  constructor(private settings: IPortProxySettings) {}
+  
+  /**
+   * Updates the domain configurations
+   */
+  public updateDomainConfigs(newDomainConfigs: IDomainConfig[]): void {
+    this.settings.domainConfigs = newDomainConfigs;
+    
+    // Reset target indices for removed configs
+    const currentConfigSet = new Set(newDomainConfigs);
+    for (const [config] of this.domainTargetIndices) {
+      if (!currentConfigSet.has(config)) {
+        this.domainTargetIndices.delete(config);
+      }
+    }
+  }
+  
+  /**
+   * Get all domain configurations
+   */
+  public getDomainConfigs(): IDomainConfig[] {
+    return this.settings.domainConfigs;
+  }
+  
+  /**
+   * Find domain config matching a server name
+   */
+  public findDomainConfig(serverName: string): IDomainConfig | undefined {
+    if (!serverName) return undefined;
+    
+    return this.settings.domainConfigs.find((config) =>
+      config.domains.some((d) => plugins.minimatch(serverName, d))
+    );
+  }
+  
+  /**
+   * Find domain config for a specific port
+   */
+  public findDomainConfigForPort(port: number): IDomainConfig | undefined {
+    return this.settings.domainConfigs.find(
+      (domain) =>
+        domain.portRanges &&
+        domain.portRanges.length > 0 &&
+        this.isPortInRanges(port, domain.portRanges)
+    );
+  }
+  
+  /**
+   * Check if a port is within any of the given ranges
+   */
+  public isPortInRanges(port: number, ranges: Array<{ from: number; to: number }>): boolean {
+    return ranges.some((range) => port >= range.from && port <= range.to);
+  }
+  
+  /**
+   * Get target IP with round-robin support
+   */
+  public getTargetIP(domainConfig: IDomainConfig): string {
+    if (domainConfig.targetIPs && domainConfig.targetIPs.length > 0) {
+      const currentIndex = this.domainTargetIndices.get(domainConfig) || 0;
+      const ip = domainConfig.targetIPs[currentIndex % domainConfig.targetIPs.length];
+      this.domainTargetIndices.set(domainConfig, currentIndex + 1);
+      return ip;
+    }
+    
+    return this.settings.targetIP || 'localhost';
+  }
+  
+  /**
+   * Checks if a domain should use NetworkProxy
+   */
+  public shouldUseNetworkProxy(domainConfig: IDomainConfig): boolean {
+    return !!domainConfig.useNetworkProxy;
+  }
+  
+  /**
+   * Gets the NetworkProxy port for a domain
+   */
+  public getNetworkProxyPort(domainConfig: IDomainConfig): number | undefined {
+    return domainConfig.useNetworkProxy 
+      ? (domainConfig.networkProxyPort || this.settings.networkProxyPort)
+      : undefined;
+  }
+  
+  /**
+   * Get effective allowed and blocked IPs for a domain
+   */
+  public getEffectiveIPRules(domainConfig: IDomainConfig): {
+    allowedIPs: string[],
+    blockedIPs: string[]
+  } {
+    return {
+      allowedIPs: [
+        ...domainConfig.allowedIPs,
+        ...(this.settings.defaultAllowedIPs || [])
+      ],
+      blockedIPs: [
+        ...(domainConfig.blockedIPs || []),
+        ...(this.settings.defaultBlockedIPs || [])
+      ]
+    };
+  }
+  
+  /**
+   * Get connection timeout for a domain
+   */
+  public getConnectionTimeout(domainConfig?: IDomainConfig): number {
+    if (domainConfig?.connectionTimeout) {
+      return domainConfig.connectionTimeout;
+    }
+    return this.settings.maxConnectionLifetime || 86400000; // 24 hours default
+  }
+}

ts/classes.pp.interfaces.ts

@@ -0,0 +1,136 @@
+import * as plugins from './plugins.js';
+
+/** Domain configuration with per-domain allowed port ranges */
+export interface IDomainConfig {
+  domains: string[]; // Glob patterns for domain(s)
+  allowedIPs: string[]; // Glob patterns for allowed IPs
+  blockedIPs?: string[]; // Glob patterns for blocked IPs
+  targetIPs?: string[]; // If multiple targetIPs are given, use round robin.
+  portRanges?: Array<{ from: number; to: number }>; // Optional port ranges
+  // Allow domain-specific timeout override
+  connectionTimeout?: number; // Connection timeout override (ms)
+
+  // NetworkProxy integration options for this specific domain
+  useNetworkProxy?: boolean; // Whether to use NetworkProxy for this domain
+  networkProxyPort?: number; // Override default NetworkProxy port for this domain
+}
+
+/** Port proxy settings including global allowed port ranges */
+export interface IPortProxySettings {
+  fromPort: number;
+  toPort: number;
+  targetIP?: string; // Global target host to proxy to, defaults to 'localhost'
+  domainConfigs: IDomainConfig[];
+  sniEnabled?: boolean;
+  defaultAllowedIPs?: string[];
+  defaultBlockedIPs?: string[];
+  preserveSourceIP?: boolean;
+
+  // TLS options
+  pfx?: Buffer;
+  key?: string | Buffer | Array<Buffer | string>;
+  passphrase?: string;
+  cert?: string | Buffer | Array<string | Buffer>;
+  ca?: string | Buffer | Array<string | Buffer>;
+  ciphers?: string;
+  honorCipherOrder?: boolean;
+  rejectUnauthorized?: boolean;
+  secureProtocol?: string;
+  servername?: string;
+  minVersion?: string;
+  maxVersion?: string;
+
+  // Timeout settings
+  initialDataTimeout?: number; // Timeout for initial data/SNI (ms), default: 60000 (60s)
+  socketTimeout?: number; // Socket inactivity timeout (ms), default: 3600000 (1h)
+  inactivityCheckInterval?: number; // How often to check for inactive connections (ms), default: 60000 (60s)
+  maxConnectionLifetime?: number; // Default max connection lifetime (ms), default: 86400000 (24h)
+  inactivityTimeout?: number; // Inactivity timeout (ms), default: 14400000 (4h)
+
+  gracefulShutdownTimeout?: number; // (ms) maximum time to wait for connections to close during shutdown
+  globalPortRanges: Array<{ from: number; to: number }>; // Global allowed port ranges
+  forwardAllGlobalRanges?: boolean; // When true, forwards all connections on global port ranges to the global targetIP
+
+  // Socket optimization settings
+  noDelay?: boolean; // Disable Nagle's algorithm (default: true)
+  keepAlive?: boolean; // Enable TCP keepalive (default: true)
+  keepAliveInitialDelay?: number; // Initial delay before sending keepalive probes (ms)
+  maxPendingDataSize?: number; // Maximum bytes to buffer during connection setup
+
+  // Enhanced features
+  disableInactivityCheck?: boolean; // Disable inactivity checking entirely
+  enableKeepAliveProbes?: boolean; // Enable TCP keep-alive probes
+  enableDetailedLogging?: boolean; // Enable detailed connection logging
+  enableTlsDebugLogging?: boolean; // Enable TLS handshake debug logging
+  enableRandomizedTimeouts?: boolean; // Randomize timeouts slightly to prevent thundering herd
+  allowSessionTicket?: boolean; // Allow TLS session ticket for reconnection (default: true)
+
+  // Rate limiting and security
+  maxConnectionsPerIP?: number; // Maximum simultaneous connections from a single IP
+  connectionRateLimitPerMinute?: number; // Max new connections per minute from a single IP
+
+  // Enhanced keep-alive settings
+  keepAliveTreatment?: 'standard' | 'extended' | 'immortal'; // How to treat keep-alive connections
+  keepAliveInactivityMultiplier?: number; // Multiplier for inactivity timeout for keep-alive connections
+  extendedKeepAliveLifetime?: number; // Extended lifetime for keep-alive connections (ms)
+
+  // NetworkProxy integration
+  useNetworkProxy?: number[]; // Array of ports to forward to NetworkProxy
+  networkProxyPort?: number; // Port where NetworkProxy is listening (default: 8443)
+
+  // ACME certificate management options
+  acme?: {
+    enabled?: boolean; // Whether to enable automatic certificate management
+    port?: number; // Port to listen on for ACME challenges (default: 80)
+    contactEmail?: string; // Email for Let's Encrypt account
+    useProduction?: boolean; // Whether to use Let's Encrypt production (default: false for staging)
+    renewThresholdDays?: number; // Days before expiry to renew certificates (default: 30)
+    autoRenew?: boolean; // Whether to automatically renew certificates (default: true)
+    certificateStore?: string; // Directory to store certificates (default: ./certs)
+    skipConfiguredCerts?: boolean; // Skip domains that already have certificates configured
+  };
+}
+
+/**
+ * Enhanced connection record
+ */
+export interface IConnectionRecord {
+  id: string; // Unique connection identifier
+  incoming: plugins.net.Socket;
+  outgoing: plugins.net.Socket | null;
+  incomingStartTime: number;
+  outgoingStartTime?: number;
+  outgoingClosedTime?: number;
+  lockedDomain?: string; // Used to lock this connection to the initial SNI
+  connectionClosed: boolean; // Flag to prevent multiple cleanup attempts
+  cleanupTimer?: NodeJS.Timeout; // Timer for max lifetime/inactivity
+  lastActivity: number; // Last activity timestamp for inactivity detection
+  pendingData: Buffer[]; // Buffer to hold data during connection setup
+  pendingDataSize: number; // Track total size of pending data
+
+  // Enhanced tracking fields
+  bytesReceived: number; // Total bytes received
+  bytesSent: number; // Total bytes sent
+  remoteIP: string; // Remote IP (cached for logging after socket close)
+  localPort: number; // Local port (cached for logging)
+  isTLS: boolean; // Whether this connection is a TLS connection
+  tlsHandshakeComplete: boolean; // Whether the TLS handshake is complete
+  hasReceivedInitialData: boolean; // Whether initial data has been received
+  domainConfig?: IDomainConfig; // Associated domain config for this connection
+
+  // Keep-alive tracking
+  hasKeepAlive: boolean; // Whether keep-alive is enabled for this connection
+  inactivityWarningIssued?: boolean; // Whether an inactivity warning has been issued
+  incomingTerminationReason?: string | null; // Reason for incoming termination
+  outgoingTerminationReason?: string | null; // Reason for outgoing termination
+
+  // NetworkProxy tracking
+  usingNetworkProxy?: boolean; // Whether this connection is using a NetworkProxy
+
+  // Renegotiation handler
+  renegotiationHandler?: (chunk: Buffer) => void; // Handler for renegotiation detection
+
+  // Browser connection tracking
+  isBrowserConnection?: boolean; // Whether this connection appears to be from a browser
+  domainSwitches?: number; // Number of times the domain has been switched on this connection
+}

ts/classes.pp.networkproxybridge.ts

@@ -0,0 +1,258 @@
+import * as plugins from './plugins.js';
+import { NetworkProxy } from './classes.networkproxy.js';
+import type { IConnectionRecord, IPortProxySettings, IDomainConfig } from './classes.pp.interfaces.js';
+
+/**
+ * Manages NetworkProxy integration for TLS termination
+ */
+export class NetworkProxyBridge {
+  private networkProxy: NetworkProxy | null = null;
+  
+  constructor(private settings: IPortProxySettings) {}
+  
+  /**
+   * Initialize NetworkProxy instance
+   */
+  public async initialize(): Promise<void> {
+    if (!this.networkProxy && this.settings.useNetworkProxy && this.settings.useNetworkProxy.length > 0) {
+      // Configure NetworkProxy options based on PortProxy settings
+      const networkProxyOptions: any = {
+        port: this.settings.networkProxyPort!,
+        portProxyIntegration: true,
+        logLevel: this.settings.enableDetailedLogging ? 'debug' : 'info',
+      };
+
+      // Add ACME settings if configured
+      if (this.settings.acme) {
+        networkProxyOptions.acme = { ...this.settings.acme };
+      }
+
+      this.networkProxy = new NetworkProxy(networkProxyOptions);
+
+      console.log(`Initialized NetworkProxy on port ${this.settings.networkProxyPort}`);
+
+      // Convert and apply domain configurations to NetworkProxy
+      await this.syncDomainConfigsToNetworkProxy();
+    }
+  }
+  
+  /**
+   * Get the NetworkProxy instance
+   */
+  public getNetworkProxy(): NetworkProxy | null {
+    return this.networkProxy;
+  }
+  
+  /**
+   * Get the NetworkProxy port
+   */
+  public getNetworkProxyPort(): number {
+    return this.networkProxy ? this.networkProxy.getListeningPort() : this.settings.networkProxyPort || 8443;
+  }
+  
+  /**
+   * Start NetworkProxy
+   */
+  public async start(): Promise<void> {
+    if (this.networkProxy) {
+      await this.networkProxy.start();
+      console.log(`NetworkProxy started on port ${this.settings.networkProxyPort}`);
+
+      // Log ACME status
+      if (this.settings.acme?.enabled) {
+        console.log(
+          `ACME certificate management is enabled (${
+            this.settings.acme.useProduction ? 'Production' : 'Staging'
+          } mode)`
+        );
+        console.log(`ACME HTTP challenge server on port ${this.settings.acme.port}`);
+
+        // Register domains for ACME certificates if enabled
+        if (this.networkProxy.options.acme?.enabled) {
+          console.log('Registering domains with ACME certificate manager...');
+          // The NetworkProxy will handle this internally via registerDomainsWithAcmeManager()
+        }
+      }
+    }
+  }
+  
+  /**
+   * Stop NetworkProxy
+   */
+  public async stop(): Promise<void> {
+    if (this.networkProxy) {
+      try {
+        console.log('Stopping NetworkProxy...');
+        await this.networkProxy.stop();
+        console.log('NetworkProxy stopped successfully');
+
+        // Log ACME shutdown if it was enabled
+        if (this.settings.acme?.enabled) {
+          console.log('ACME certificate manager stopped');
+        }
+      } catch (err) {
+        console.log(`Error stopping NetworkProxy: ${err}`);
+      }
+    }
+  }
+  
+  /**
+   * Forwards a TLS connection to a NetworkProxy for handling
+   */
+  public forwardToNetworkProxy(
+    connectionId: string,
+    socket: plugins.net.Socket,
+    record: IConnectionRecord,
+    initialData: Buffer,
+    customProxyPort?: number,
+    onError?: (reason: string) => void
+  ): void {
+    // Ensure NetworkProxy is initialized
+    if (!this.networkProxy) {
+      console.log(
+        `[${connectionId}] NetworkProxy not initialized. Cannot forward connection.`
+      );
+      if (onError) {
+        onError('network_proxy_not_initialized');
+      }
+      return;
+    }
+
+    // Use the custom port if provided, otherwise use the default NetworkProxy port
+    const proxyPort = customProxyPort || this.networkProxy.getListeningPort();
+    const proxyHost = 'localhost'; // Assuming NetworkProxy runs locally
+
+    if (this.settings.enableDetailedLogging) {
+      console.log(
+        `[${connectionId}] Forwarding TLS connection to NetworkProxy at ${proxyHost}:${proxyPort}`
+      );
+    }
+
+    // Create a connection to the NetworkProxy
+    const proxySocket = plugins.net.connect({
+      host: proxyHost,
+      port: proxyPort,
+    });
+
+    // Store the outgoing socket in the record
+    record.outgoing = proxySocket;
+    record.outgoingStartTime = Date.now();
+    record.usingNetworkProxy = true;
+
+    // Set up error handlers
+    proxySocket.on('error', (err) => {
+      console.log(`[${connectionId}] Error connecting to NetworkProxy: ${err.message}`);
+      if (onError) {
+        onError('network_proxy_connect_error');
+      }
+    });
+
+    // Handle connection to NetworkProxy
+    proxySocket.on('connect', () => {
+      if (this.settings.enableDetailedLogging) {
+        console.log(`[${connectionId}] Connected to NetworkProxy at ${proxyHost}:${proxyPort}`);
+      }
+
+      // First send the initial data that contains the TLS ClientHello
+      proxySocket.write(initialData);
+
+      // Now set up bidirectional piping between client and NetworkProxy
+      socket.pipe(proxySocket);
+      proxySocket.pipe(socket);
+
+      // Update activity on data transfer (caller should handle this)
+      if (this.settings.enableDetailedLogging) {
+        console.log(`[${connectionId}] TLS connection successfully forwarded to NetworkProxy`);
+      }
+    });
+  }
+  
+  /**
+   * Synchronizes domain configurations to NetworkProxy
+   */
+  public async syncDomainConfigsToNetworkProxy(): Promise<void> {
+    if (!this.networkProxy) {
+      console.log('Cannot sync configurations - NetworkProxy not initialized');
+      return;
+    }
+
+    try {
+      // Get SSL certificates from assets
+      // Import fs directly since it's not in plugins
+      const fs = await import('fs');
+
+      let certPair;
+      try {
+        certPair = {
+          key: fs.readFileSync('assets/certs/key.pem', 'utf8'),
+          cert: fs.readFileSync('assets/certs/cert.pem', 'utf8'),
+        };
+      } catch (certError) {
+        console.log(`Warning: Could not read default certificates: ${certError}`);
+        console.log(
+          'Using empty certificate placeholders - ACME will generate proper certificates if enabled'
+        );
+
+        // Use empty placeholders - NetworkProxy will use its internal defaults
+        // or ACME will generate proper ones if enabled
+        certPair = {
+          key: '',
+          cert: '',
+        };
+      }
+
+      // Convert domain configs to NetworkProxy configs
+      const proxyConfigs = this.networkProxy.convertPortProxyConfigs(
+        this.settings.domainConfigs,
+        certPair
+      );
+
+      // Log ACME-eligible domains if ACME is enabled
+      if (this.settings.acme?.enabled) {
+        const acmeEligibleDomains = proxyConfigs
+          .filter((config) => !config.hostName.includes('*')) // Exclude wildcards
+          .map((config) => config.hostName);
+
+        if (acmeEligibleDomains.length > 0) {
+          console.log(`Domains eligible for ACME certificates: ${acmeEligibleDomains.join(', ')}`);
+        } else {
+          console.log('No domains eligible for ACME certificates found in configuration');
+        }
+      }
+
+      // Update NetworkProxy with the converted configs
+      await this.networkProxy.updateProxyConfigs(proxyConfigs);
+      console.log(`Successfully synchronized ${proxyConfigs.length} domain configurations to NetworkProxy`);
+    } catch (err) {
+      console.log(`Failed to sync configurations: ${err}`);
+    }
+  }
+  
+  /**
+   * Request a certificate for a specific domain
+   */
+  public async requestCertificate(domain: string): Promise<boolean> {
+    if (!this.networkProxy) {
+      console.log('Cannot request certificate - NetworkProxy not initialized');
+      return false;
+    }
+
+    if (!this.settings.acme?.enabled) {
+      console.log('Cannot request certificate - ACME is not enabled');
+      return false;
+    }
+
+    try {
+      const result = await this.networkProxy.requestCertificate(domain);
+      if (result) {
+        console.log(`Certificate request for ${domain} submitted successfully`);
+      } else {
+        console.log(`Certificate request for ${domain} failed`);
+      }
+      return result;
+    } catch (err) {
+      console.log(`Error requesting certificate: ${err}`);
+      return false;
+    }
+  }
+}

ts/classes.pp.portproxy.ts

@@ -0,0 +1,344 @@
+import * as plugins from './plugins.js';
+import type { IPortProxySettings, IDomainConfig } from './classes.pp.interfaces.js';
+import { ConnectionManager } from './classes.pp.connectionmanager.js';
+import { SecurityManager } from './classes.pp.securitymanager.js';
+import { DomainConfigManager } from './classes.pp.domainconfigmanager.js';
+import { TlsManager } from './classes.pp.tlsmanager.js';
+import { NetworkProxyBridge } from './classes.pp.networkproxybridge.js';
+import { TimeoutManager } from './classes.pp.timeoutmanager.js';
+import { AcmeManager } from './classes.pp.acmemanager.js';
+import { PortRangeManager } from './classes.pp.portrangemanager.js';
+import { ConnectionHandler } from './classes.pp.connectionhandler.js';
+
+/**
+ * PortProxy - Main class that coordinates all components
+ */
+export class PortProxy {
+  private netServers: plugins.net.Server[] = [];
+  private connectionLogger: NodeJS.Timeout | null = null;
+  private isShuttingDown: boolean = false;
+  
+  // Component managers
+  private connectionManager: ConnectionManager;
+  private securityManager: SecurityManager;
+  public domainConfigManager: DomainConfigManager;
+  private tlsManager: TlsManager;
+  private networkProxyBridge: NetworkProxyBridge;
+  private timeoutManager: TimeoutManager;
+  private acmeManager: AcmeManager;
+  private portRangeManager: PortRangeManager;
+  private connectionHandler: ConnectionHandler;
+  
+  constructor(settingsArg: IPortProxySettings) {
+    // Set reasonable defaults for all settings
+    this.settings = {
+      ...settingsArg,
+      targetIP: settingsArg.targetIP || 'localhost',
+      initialDataTimeout: settingsArg.initialDataTimeout || 120000,
+      socketTimeout: settingsArg.socketTimeout || 3600000,
+      inactivityCheckInterval: settingsArg.inactivityCheckInterval || 60000,
+      maxConnectionLifetime: settingsArg.maxConnectionLifetime || 86400000,
+      inactivityTimeout: settingsArg.inactivityTimeout || 14400000,
+      gracefulShutdownTimeout: settingsArg.gracefulShutdownTimeout || 30000,
+      noDelay: settingsArg.noDelay !== undefined ? settingsArg.noDelay : true,
+      keepAlive: settingsArg.keepAlive !== undefined ? settingsArg.keepAlive : true,
+      keepAliveInitialDelay: settingsArg.keepAliveInitialDelay || 10000,
+      maxPendingDataSize: settingsArg.maxPendingDataSize || 10 * 1024 * 1024,
+      disableInactivityCheck: settingsArg.disableInactivityCheck || false,
+      enableKeepAliveProbes: 
+        settingsArg.enableKeepAliveProbes !== undefined ? settingsArg.enableKeepAliveProbes : true,
+      enableDetailedLogging: settingsArg.enableDetailedLogging || false,
+      enableTlsDebugLogging: settingsArg.enableTlsDebugLogging || false,
+      enableRandomizedTimeouts: settingsArg.enableRandomizedTimeouts || false,
+      allowSessionTicket: 
+        settingsArg.allowSessionTicket !== undefined ? settingsArg.allowSessionTicket : true,
+      maxConnectionsPerIP: settingsArg.maxConnectionsPerIP || 100,
+      connectionRateLimitPerMinute: settingsArg.connectionRateLimitPerMinute || 300,
+      keepAliveTreatment: settingsArg.keepAliveTreatment || 'extended',
+      keepAliveInactivityMultiplier: settingsArg.keepAliveInactivityMultiplier || 6,
+      extendedKeepAliveLifetime: settingsArg.extendedKeepAliveLifetime || 7 * 24 * 60 * 60 * 1000,
+      networkProxyPort: settingsArg.networkProxyPort || 8443,
+      acme: settingsArg.acme || {
+        enabled: false,
+        port: 80,
+        contactEmail: 'admin@example.com',
+        useProduction: false,
+        renewThresholdDays: 30,
+        autoRenew: true,
+        certificateStore: './certs',
+        skipConfiguredCerts: false,
+      },
+    };
+    
+    // Initialize component managers
+    this.timeoutManager = new TimeoutManager(this.settings);
+    this.securityManager = new SecurityManager(this.settings);
+    this.connectionManager = new ConnectionManager(
+      this.settings, 
+      this.securityManager, 
+      this.timeoutManager
+    );
+    this.domainConfigManager = new DomainConfigManager(this.settings);
+    this.tlsManager = new TlsManager(this.settings);
+    this.networkProxyBridge = new NetworkProxyBridge(this.settings);
+    this.portRangeManager = new PortRangeManager(this.settings);
+    this.acmeManager = new AcmeManager(this.settings, this.networkProxyBridge);
+    
+    // Initialize connection handler
+    this.connectionHandler = new ConnectionHandler(
+      this.settings,
+      this.connectionManager,
+      this.securityManager,
+      this.domainConfigManager,
+      this.tlsManager,
+      this.networkProxyBridge,
+      this.timeoutManager,
+      this.portRangeManager
+    );
+  }
+  
+  /**
+   * The settings for the port proxy
+   */
+  public settings: IPortProxySettings;
+  
+  /**
+   * Start the proxy server
+   */
+  public async start() {
+    // Don't start if already shutting down
+    if (this.isShuttingDown) {
+      console.log("Cannot start PortProxy while it's shutting down");
+      return;
+    }
+
+    // Initialize and start NetworkProxy if needed
+    if (
+      this.settings.useNetworkProxy &&
+      this.settings.useNetworkProxy.length > 0
+    ) {
+      await this.networkProxyBridge.initialize();
+      await this.networkProxyBridge.start();
+    }
+
+    // Validate port configuration
+    const configWarnings = this.portRangeManager.validateConfiguration();
+    if (configWarnings.length > 0) {
+      console.log("Port configuration warnings:");
+      for (const warning of configWarnings) {
+        console.log(` - ${warning}`);
+      }
+    }
+
+    // Get listening ports from PortRangeManager
+    const listeningPorts = this.portRangeManager.getListeningPorts();
+
+    // Create servers for each port
+    for (const port of listeningPorts) {
+      const server = plugins.net.createServer((socket) => {
+        // Check if shutting down
+        if (this.isShuttingDown) {
+          socket.end();
+          socket.destroy();
+          return;
+        }
+        
+        // Delegate to connection handler
+        this.connectionHandler.handleConnection(socket);
+      }).on('error', (err: Error) => {
+        console.log(`Server Error on port ${port}: ${err.message}`);
+      });
+      
+      server.listen(port, () => {
+        const isNetworkProxyPort = this.settings.useNetworkProxy?.includes(port);
+        console.log(
+          `PortProxy -> OK: Now listening on port ${port}${
+            this.settings.sniEnabled && !isNetworkProxyPort ? ' (SNI passthrough enabled)' : ''
+          }${isNetworkProxyPort ? ' (NetworkProxy forwarding enabled)' : ''}`
+        );
+      });
+      
+      this.netServers.push(server);
+    }
+
+    // Set up periodic connection logging and inactivity checks
+    this.connectionLogger = setInterval(() => {
+      // Immediately return if shutting down
+      if (this.isShuttingDown) return;
+
+      // Perform inactivity check
+      this.connectionManager.performInactivityCheck();
+
+      // Log connection statistics
+      const now = Date.now();
+      let maxIncoming = 0;
+      let maxOutgoing = 0;
+      let tlsConnections = 0;
+      let nonTlsConnections = 0;
+      let completedTlsHandshakes = 0;
+      let pendingTlsHandshakes = 0;
+      let keepAliveConnections = 0;
+      let networkProxyConnections = 0;
+      
+      // Get connection records for analysis
+      const connectionRecords = this.connectionManager.getConnections();
+      
+      // Analyze active connections
+      for (const record of connectionRecords.values()) {
+        // Track connection stats
+        if (record.isTLS) {
+          tlsConnections++;
+          if (record.tlsHandshakeComplete) {
+            completedTlsHandshakes++;
+          } else {
+            pendingTlsHandshakes++;
+          }
+        } else {
+          nonTlsConnections++;
+        }
+
+        if (record.hasKeepAlive) {
+          keepAliveConnections++;
+        }
+
+        if (record.usingNetworkProxy) {
+          networkProxyConnections++;
+        }
+
+        maxIncoming = Math.max(maxIncoming, now - record.incomingStartTime);
+        if (record.outgoingStartTime) {
+          maxOutgoing = Math.max(maxOutgoing, now - record.outgoingStartTime);
+        }
+      }
+
+      // Get termination stats
+      const terminationStats = this.connectionManager.getTerminationStats();
+
+      // Log detailed stats
+      console.log(
+        `Active connections: ${connectionRecords.size}. ` +
+        `Types: TLS=${tlsConnections} (Completed=${completedTlsHandshakes}, Pending=${pendingTlsHandshakes}), ` +
+        `Non-TLS=${nonTlsConnections}, KeepAlive=${keepAliveConnections}, NetworkProxy=${networkProxyConnections}. ` +
+        `Longest running: IN=${plugins.prettyMs(maxIncoming)}, OUT=${plugins.prettyMs(maxOutgoing)}. ` +
+        `Termination stats: ${JSON.stringify({
+          IN: terminationStats.incoming,
+          OUT: terminationStats.outgoing,
+        })}`
+      );
+    }, this.settings.inactivityCheckInterval || 60000);
+
+    // Make sure the interval doesn't keep the process alive
+    if (this.connectionLogger.unref) {
+      this.connectionLogger.unref();
+    }
+  }
+  
+  /**
+   * Stop the proxy server
+   */
+  public async stop() {
+    console.log('PortProxy shutting down...');
+    this.isShuttingDown = true;
+
+    // Stop accepting new connections
+    const closeServerPromises: Promise<void>[] = this.netServers.map(
+      (server) =>
+        new Promise<void>((resolve) => {
+          if (!server.listening) {
+            resolve();
+            return;
+          }
+          server.close((err) => {
+            if (err) {
+              console.log(`Error closing server: ${err.message}`);
+            }
+            resolve();
+          });
+        })
+    );
+
+    // Stop the connection logger
+    if (this.connectionLogger) {
+      clearInterval(this.connectionLogger);
+      this.connectionLogger = null;
+    }
+
+    // Wait for servers to close
+    await Promise.all(closeServerPromises);
+    console.log('All servers closed. Cleaning up active connections...');
+
+    // Clean up all active connections
+    this.connectionManager.clearConnections();
+
+    // Stop NetworkProxy
+    await this.networkProxyBridge.stop();
+
+    // Clear all servers
+    this.netServers = [];
+
+    console.log('PortProxy shutdown complete.');
+  }
+  
+  /**
+   * Updates the domain configurations for the proxy
+   */
+  public async updateDomainConfigs(newDomainConfigs: IDomainConfig[]): Promise<void> {
+    console.log(`Updating domain configurations (${newDomainConfigs.length} configs)`);
+    
+    // Update domain configs in DomainConfigManager
+    this.domainConfigManager.updateDomainConfigs(newDomainConfigs);
+    
+    // If NetworkProxy is initialized, resync the configurations
+    if (this.networkProxyBridge.getNetworkProxy()) {
+      await this.networkProxyBridge.syncDomainConfigsToNetworkProxy();
+    }
+  }
+  
+  /**
+   * Updates the ACME certificate settings
+   */
+  public async updateAcmeSettings(acmeSettings: IPortProxySettings['acme']): Promise<void> {
+    console.log('Updating ACME certificate settings');
+    
+    // Delegate to AcmeManager
+    await this.acmeManager.updateAcmeSettings(acmeSettings);
+  }
+  
+  /**
+   * Requests a certificate for a specific domain
+   */
+  public async requestCertificate(domain: string): Promise<boolean> {
+    // Delegate to AcmeManager
+    return this.acmeManager.requestCertificate(domain);
+  }
+  
+  /**
+   * Get statistics about current connections
+   */
+  public getStatistics(): any {
+    const connectionRecords = this.connectionManager.getConnections();
+    const terminationStats = this.connectionManager.getTerminationStats();
+    
+    let tlsConnections = 0;
+    let nonTlsConnections = 0;
+    let keepAliveConnections = 0;
+    let networkProxyConnections = 0;
+    
+    // Analyze active connections
+    for (const record of connectionRecords.values()) {
+      if (record.isTLS) tlsConnections++;
+      else nonTlsConnections++;
+      if (record.hasKeepAlive) keepAliveConnections++;
+      if (record.usingNetworkProxy) networkProxyConnections++;
+    }
+    
+    return {
+      activeConnections: connectionRecords.size,
+      tlsConnections,
+      nonTlsConnections,
+      keepAliveConnections,
+      networkProxyConnections,
+      terminationStats
+    };
+  }
+}

ts/classes.pp.portrangemanager.ts

@@ -0,0 +1,214 @@
+import type{ IPortProxySettings } from './classes.pp.interfaces.js';
+
+/**
+ * Manages port ranges and port-based configuration
+ */
+export class PortRangeManager {
+  constructor(private settings: IPortProxySettings) {}
+  
+  /**
+   * Get all ports that should be listened on
+   */
+  public getListeningPorts(): Set<number> {
+    const listeningPorts = new Set<number>();
+    
+    // Always include the main fromPort
+    listeningPorts.add(this.settings.fromPort);
+    
+    // Add ports from global port ranges if defined
+    if (this.settings.globalPortRanges && this.settings.globalPortRanges.length > 0) {
+      for (const range of this.settings.globalPortRanges) {
+        for (let port = range.from; port <= range.to; port++) {
+          listeningPorts.add(port);
+        }
+      }
+    }
+    
+    return listeningPorts;
+  }
+  
+  /**
+   * Check if a port should use NetworkProxy for forwarding
+   */
+  public shouldUseNetworkProxy(port: number): boolean {
+    return !!this.settings.useNetworkProxy && this.settings.useNetworkProxy.includes(port);
+  }
+  
+  /**
+   * Check if port should use global forwarding
+   */
+  public shouldUseGlobalForwarding(port: number): boolean {
+    return (
+      !!this.settings.forwardAllGlobalRanges &&
+      this.isPortInGlobalRanges(port)
+    );
+  }
+  
+  /**
+   * Check if a port is in global ranges
+   */
+  public isPortInGlobalRanges(port: number): boolean {
+    return (
+      this.settings.globalPortRanges &&
+      this.isPortInRanges(port, this.settings.globalPortRanges)
+    );
+  }
+  
+  /**
+   * Check if a port falls within the specified ranges
+   */
+  public isPortInRanges(port: number, ranges: Array<{ from: number; to: number }>): boolean {
+    return ranges.some((range) => port >= range.from && port <= range.to);
+  }
+  
+  /**
+   * Get forwarding port for a specific listening port
+   * This determines what port to connect to on the target
+   */
+  public getForwardingPort(listeningPort: number): number {
+    // If using global forwarding, forward to the original port
+    if (this.settings.forwardAllGlobalRanges && this.isPortInGlobalRanges(listeningPort)) {
+      return listeningPort;
+    }
+    
+    // Otherwise use the configured toPort
+    return this.settings.toPort;
+  }
+  
+  /**
+   * Find domain-specific port ranges that include a given port
+   */
+  public findDomainPortRange(port: number): { 
+    domainIndex: number, 
+    range: { from: number, to: number } 
+  } | undefined {
+    for (let i = 0; i < this.settings.domainConfigs.length; i++) {
+      const domain = this.settings.domainConfigs[i];
+      if (domain.portRanges) {
+        for (const range of domain.portRanges) {
+          if (port >= range.from && port <= range.to) {
+            return { domainIndex: i, range };
+          }
+        }
+      }
+    }
+    return undefined;
+  }
+  
+  /**
+   * Get a list of all configured ports
+   * This includes the fromPort, NetworkProxy ports, and ports from all ranges
+   */
+  public getAllConfiguredPorts(): number[] {
+    const ports = new Set<number>();
+    
+    // Add main listening port
+    ports.add(this.settings.fromPort);
+    
+    // Add NetworkProxy port if configured
+    if (this.settings.networkProxyPort) {
+      ports.add(this.settings.networkProxyPort);
+    }
+    
+    // Add NetworkProxy ports
+    if (this.settings.useNetworkProxy) {
+      for (const port of this.settings.useNetworkProxy) {
+        ports.add(port);
+      }
+    }
+    
+    // Add ACME HTTP challenge port if enabled
+    if (this.settings.acme?.enabled && this.settings.acme.port) {
+      ports.add(this.settings.acme.port);
+    }
+    
+    // Add global port ranges
+    if (this.settings.globalPortRanges) {
+      for (const range of this.settings.globalPortRanges) {
+        for (let port = range.from; port <= range.to; port++) {
+          ports.add(port);
+        }
+      }
+    }
+    
+    // Add domain-specific port ranges
+    for (const domain of this.settings.domainConfigs) {
+      if (domain.portRanges) {
+        for (const range of domain.portRanges) {
+          for (let port = range.from; port <= range.to; port++) {
+            ports.add(port);
+          }
+        }
+      }
+      
+      // Add domain-specific NetworkProxy port if configured
+      if (domain.useNetworkProxy && domain.networkProxyPort) {
+        ports.add(domain.networkProxyPort);
+      }
+    }
+    
+    return Array.from(ports);
+  }
+  
+  /**
+   * Validate port configuration
+   * Returns array of warning messages
+   */
+  public validateConfiguration(): string[] {
+    const warnings: string[] = [];
+    
+    // Check for overlapping port ranges
+    const portMappings = new Map<number, string[]>();
+    
+    // Track global port ranges
+    if (this.settings.globalPortRanges) {
+      for (const range of this.settings.globalPortRanges) {
+        for (let port = range.from; port <= range.to; port++) {
+          if (!portMappings.has(port)) {
+            portMappings.set(port, []);
+          }
+          portMappings.get(port)!.push('Global Port Range');
+        }
+      }
+    }
+    
+    // Track domain-specific port ranges
+    for (const domain of this.settings.domainConfigs) {
+      if (domain.portRanges) {
+        for (const range of domain.portRanges) {
+          for (let port = range.from; port <= range.to; port++) {
+            if (!portMappings.has(port)) {
+              portMappings.set(port, []);
+            }
+            portMappings.get(port)!.push(`Domain: ${domain.domains.join(', ')}`);
+          }
+        }
+      }
+    }
+    
+    // Check for ports with multiple mappings
+    for (const [port, mappings] of portMappings.entries()) {
+      if (mappings.length > 1) {
+        warnings.push(`Port ${port} has multiple mappings: ${mappings.join(', ')}`);
+      }
+    }
+    
+    // Check if main ports are used elsewhere
+    if (portMappings.has(this.settings.fromPort) && portMappings.get(this.settings.fromPort)!.length > 0) {
+      warnings.push(`Main listening port ${this.settings.fromPort} is also used in port ranges`);
+    }
+    
+    if (this.settings.networkProxyPort && portMappings.has(this.settings.networkProxyPort)) {
+      warnings.push(`NetworkProxy port ${this.settings.networkProxyPort} is also used in port ranges`);
+    }
+    
+    // Check ACME port
+    if (this.settings.acme?.enabled && this.settings.acme.port) {
+      if (portMappings.has(this.settings.acme.port)) {
+        warnings.push(`ACME HTTP challenge port ${this.settings.acme.port} is also used in port ranges`);
+      }
+    }
+    
+    return warnings;
+  }
+}

ts/classes.pp.securitymanager.ts

@@ -0,0 +1,147 @@
+import * as plugins from './plugins.js';
+import type { IPortProxySettings } from './classes.pp.interfaces.js';
+
+/**
+ * Handles security aspects like IP tracking, rate limiting, and authorization
+ */
+export class SecurityManager {
+  private connectionsByIP: Map<string, Set<string>> = new Map();
+  private connectionRateByIP: Map<string, number[]> = new Map();
+  
+  constructor(private settings: IPortProxySettings) {}
+  
+  /**
+   * Get connections count by IP
+   */
+  public getConnectionCountByIP(ip: string): number {
+    return this.connectionsByIP.get(ip)?.size || 0;
+  }
+  
+  /**
+   * Check and update connection rate for an IP
+   * @returns true if within rate limit, false if exceeding limit
+   */
+  public checkConnectionRate(ip: string): boolean {
+    const now = Date.now();
+    const minute = 60 * 1000;
+
+    if (!this.connectionRateByIP.has(ip)) {
+      this.connectionRateByIP.set(ip, [now]);
+      return true;
+    }
+
+    // Get timestamps and filter out entries older than 1 minute
+    const timestamps = this.connectionRateByIP.get(ip)!.filter((time) => now - time < minute);
+    timestamps.push(now);
+    this.connectionRateByIP.set(ip, timestamps);
+
+    // Check if rate exceeds limit
+    return timestamps.length <= this.settings.connectionRateLimitPerMinute!;
+  }
+  
+  /**
+   * Track connection by IP
+   */
+  public trackConnectionByIP(ip: string, connectionId: string): void {
+    if (!this.connectionsByIP.has(ip)) {
+      this.connectionsByIP.set(ip, new Set());
+    }
+    this.connectionsByIP.get(ip)!.add(connectionId);
+  }
+  
+  /**
+   * Remove connection tracking for an IP
+   */
+  public removeConnectionByIP(ip: string, connectionId: string): void {
+    if (this.connectionsByIP.has(ip)) {
+      const connections = this.connectionsByIP.get(ip)!;
+      connections.delete(connectionId);
+      if (connections.size === 0) {
+        this.connectionsByIP.delete(ip);
+      }
+    }
+  }
+  
+  /**
+   * Check if an IP is allowed using glob patterns
+   */
+  public isIPAuthorized(ip: string, allowedIPs: string[], blockedIPs: string[] = []): boolean {
+    // Skip IP validation if allowedIPs is empty
+    if (!ip || (allowedIPs.length === 0 && blockedIPs.length === 0)) {
+      return true;
+    }
+    
+    // First check if IP is blocked
+    if (blockedIPs.length > 0 && this.isGlobIPMatch(ip, blockedIPs)) {
+      return false;
+    }
+    
+    // Then check if IP is allowed
+    return this.isGlobIPMatch(ip, allowedIPs);
+  }
+  
+  /**
+   * Check if the IP matches any of the glob patterns
+   */
+  private isGlobIPMatch(ip: string, patterns: string[]): boolean {
+    if (!ip || !patterns || patterns.length === 0) return false;
+
+    const normalizeIP = (ip: string): string[] => {
+      if (!ip) return [];
+      if (ip.startsWith('::ffff:')) {
+        const ipv4 = ip.slice(7);
+        return [ip, ipv4];
+      }
+      if (/^\d{1,3}(\.\d{1,3}){3}$/.test(ip)) {
+        return [ip, `::ffff:${ip}`];
+      }
+      return [ip];
+    };
+
+    const normalizedIPVariants = normalizeIP(ip);
+    if (normalizedIPVariants.length === 0) return false;
+
+    const expandedPatterns = patterns.flatMap(normalizeIP);
+    return normalizedIPVariants.some((ipVariant) =>
+      expandedPatterns.some((pattern) => plugins.minimatch(ipVariant, pattern))
+    );
+  }
+  
+  /**
+   * Check if IP should be allowed considering connection rate and max connections
+   * @returns Object with result and reason
+   */
+  public validateIP(ip: string): { allowed: boolean; reason?: string } {
+    // Check connection count limit
+    if (
+      this.settings.maxConnectionsPerIP &&
+      this.getConnectionCountByIP(ip) >= this.settings.maxConnectionsPerIP
+    ) {
+      return {
+        allowed: false,
+        reason: `Maximum connections per IP (${this.settings.maxConnectionsPerIP}) exceeded`
+      };
+    }
+
+    // Check connection rate limit
+    if (
+      this.settings.connectionRateLimitPerMinute && 
+      !this.checkConnectionRate(ip)
+    ) {
+      return {
+        allowed: false,
+        reason: `Connection rate limit (${this.settings.connectionRateLimitPerMinute}/min) exceeded`
+      };
+    }
+    
+    return { allowed: true };
+  }
+  
+  /**
+   * Clears all IP tracking data (for shutdown)
+   */
+  public clearIPTracking(): void {
+    this.connectionsByIP.clear();
+    this.connectionRateByIP.clear();
+  }
+}

ts/classes.pp.snihandler.ts

@@ -22,114 +22,6 @@ export class SniHandler {
   private static fragmentedBuffers: Map<string, Buffer> = new Map();
   private static fragmentTimeout: number = 1000; // ms to wait for fragments before cleanup
 
-  // Session tracking for tab reactivation scenarios
-  private static sessionCache: Map<
-    string,
-    {
-      sni: string;
-      timestamp: number;
-      clientRandom?: Buffer;
-    }
-  > = new Map();
-
-  // Longer timeout for session cache (24 hours by default)
-  private static sessionCacheTimeout: number = 24 * 60 * 60 * 1000; // 24 hours in milliseconds
-
-  // Cleanup interval for session cache (run every hour)
-  private static sessionCleanupInterval: NodeJS.Timeout | null = null;
-
-  /**
-   * Initialize the session cache cleanup mechanism.
-   * This should be called during application startup.
-   */
-  public static initSessionCacheCleanup(): void {
-    if (this.sessionCleanupInterval === null) {
-      this.sessionCleanupInterval = setInterval(() => {
-        this.cleanupSessionCache();
-      }, 60 * 60 * 1000); // Run every hour
-    }
-  }
-
-  /**
-   * Clean up expired entries from the session cache
-   */
-  private static cleanupSessionCache(): void {
-    const now = Date.now();
-    const expiredKeys: string[] = [];
-
-    this.sessionCache.forEach((session, key) => {
-      if (now - session.timestamp > this.sessionCacheTimeout) {
-        expiredKeys.push(key);
-      }
-    });
-
-    expiredKeys.forEach((key) => {
-      this.sessionCache.delete(key);
-    });
-  }
-
-  /**
-   * Create a client identity key for session tracking
-   * Uses source IP and optional client random for uniqueness
-   *
-   * @param sourceIp - Client IP address
-   * @param clientRandom - Optional TLS client random value
-   * @returns A string key for the session cache
-   */
-  private static createClientKey(sourceIp: string, clientRandom?: Buffer): string {
-    if (clientRandom) {
-      // If we have the client random, use it for more precise tracking
-      return `${sourceIp}:${clientRandom.toString('hex')}`;
-    }
-    // Fall back to just IP-based tracking
-    return sourceIp;
-  }
-
-  /**
-   * Store SNI information in the session cache
-   *
-   * @param sourceIp - Client IP address
-   * @param sni - The extracted SNI value
-   * @param clientRandom - Optional TLS client random value
-   */
-  private static cacheSession(sourceIp: string, sni: string, clientRandom?: Buffer): void {
-    const key = this.createClientKey(sourceIp, clientRandom);
-    this.sessionCache.set(key, {
-      sni,
-      timestamp: Date.now(),
-      clientRandom,
-    });
-  }
-
-  /**
-   * Retrieve SNI information from the session cache
-   *
-   * @param sourceIp - Client IP address
-   * @param clientRandom - Optional TLS client random value
-   * @returns The cached SNI or undefined if not found
-   */
-  private static getCachedSession(sourceIp: string, clientRandom?: Buffer): string | undefined {
-    // Try with client random first for precision
-    if (clientRandom) {
-      const preciseKey = this.createClientKey(sourceIp, clientRandom);
-      const preciseSession = this.sessionCache.get(preciseKey);
-      if (preciseSession) {
-        return preciseSession.sni;
-      }
-    }
-
-    // Fall back to IP-only lookup
-    const ipKey = this.createClientKey(sourceIp);
-    const session = this.sessionCache.get(ipKey);
-    if (session) {
-      // Update the timestamp to keep the session alive
-      session.timestamp = Date.now();
-      return session.sni;
-    }
-
-    return undefined;
-  }
-
   /**
    * Extract the client random value from a ClientHello message
    *
@@ -1172,7 +1064,6 @@ export class SniHandler {
    * 4. Fragmented ClientHello messages
    * 5. TLS 1.3 Early Data (0-RTT)
    * 6. Chrome's connection racing behaviors
-   * 7. Tab reactivation patterns with session cache
    *
    * @param buffer - The buffer containing the TLS ClientHello message
    * @param connectionInfo - Optional connection information for fragment handling
@@ -1235,19 +1126,10 @@ export class SniHandler {
     const standardSni = this.extractSNI(processBuffer, enableLogging);
     if (standardSni) {
       log(`Found standard SNI: ${standardSni}`);
-
-      // If we extracted a standard SNI, cache it for future use
-      if (connectionInfo?.sourceIp) {
-        const clientRandom = this.extractClientRandom(processBuffer);
-        this.cacheSession(connectionInfo.sourceIp, standardSni, clientRandom);
-        log(`Cached SNI for future reference: ${standardSni}`);
-      }
-
       return standardSni;
     }
 
     // Check for session resumption when standard SNI extraction fails
-    // This may help in chained proxy scenarios
     if (this.isClientHello(processBuffer)) {
       const resumptionInfo = this.hasSessionResumption(processBuffer, enableLogging);
 
@@ -1258,30 +1140,10 @@ export class SniHandler {
         const pskSni = this.extractSNIFromPSKExtension(processBuffer, enableLogging);
         if (pskSni) {
           log(`Extracted SNI from PSK extension: ${pskSni}`);
-
-          // Cache this SNI
-          if (connectionInfo?.sourceIp) {
-            const clientRandom = this.extractClientRandom(processBuffer);
-            this.cacheSession(connectionInfo.sourceIp, pskSni, clientRandom);
-          }
-
           return pskSni;
         }
-
-        // If session resumption has SNI in a non-standard location,
-        // we need to apply heuristics
-        if (connectionInfo?.sourceIp) {
-          const cachedSni = this.getCachedSession(connectionInfo.sourceIp);
-          if (cachedSni) {
-            log(`Using cached SNI for session resumption: ${cachedSni}`);
-            return cachedSni;
       }
     }
-      }
-    }
-
-    // Try tab reactivation and other recovery methods...
-    // (existing code remains unchanged)
 
     // Log detailed info about the ClientHello when SNI extraction fails
     if (this.isClientHello(processBuffer) && enableLogging) {
@@ -1303,7 +1165,6 @@ export class SniHandler {
       }
     }
 
-    // Existing code for fallback methods continues...
     return undefined;
   }
 
@@ -1313,7 +1174,7 @@ export class SniHandler {
    *
    * The method uses connection tracking to handle fragmented ClientHello
    * messages and various TLS 1.3 behaviors, including Chrome's connection
-   * racing patterns and tab reactivation behaviors.
+   * racing patterns.
    *
    * @param buffer - The buffer containing TLS data
    * @param connectionInfo - Connection metadata (IPs and ports)
@@ -1321,7 +1182,6 @@ export class SniHandler {
    * @param cachedSni - Optional cached SNI from previous connections (for racing detection)
    * @returns The extracted server name or undefined if not found or more data needed
    */
-
   public static processTlsPacket(
     buffer: Buffer,
     connectionInfo: {
@@ -1363,13 +1223,6 @@ export class SniHandler {
         return cachedSni;
       }
 
-      // Otherwise check our session cache
-      const sessionCachedSni = this.getCachedSession(connectionInfo.sourceIp);
-      if (sessionCachedSni) {
-        log(`Using session-cached SNI for application data: ${sessionCachedSni}`);
-        return sessionCachedSni;
-      }
-
       log('Application data packet without cached SNI, cannot determine hostname');
       return undefined;
     }
@@ -1385,9 +1238,6 @@ export class SniHandler {
         const standardSni = this.extractSNI(buffer, enableLogging);
         if (standardSni) {
           log(`Found standard SNI in session resumption: ${standardSni}`);
-
-          // Cache this SNI
-          this.cacheSession(connectionInfo.sourceIp, standardSni);
           return standardSni;
         }
 
@@ -1396,7 +1246,6 @@ export class SniHandler {
         const pskSni = this.extractSNIFromPSKExtension(buffer, enableLogging);
         if (pskSni) {
           log(`Extracted SNI from PSK extension: ${pskSni}`);
-          this.cacheSession(connectionInfo.sourceIp, pskSni);
           return pskSni;
         }
 
@@ -1430,13 +1279,6 @@ export class SniHandler {
           }
         }
 
-        // If we still don't have SNI, check for cached sessions
-        const cachedSni = this.getCachedSession(connectionInfo.sourceIp);
-        if (cachedSni) {
-          log(`Using cached SNI for session resumption: ${cachedSni}`);
-          return cachedSni;
-        }
-
         log(`Session resumption without extractable SNI`);
         // If allowSessionTicket=false, should be rejected by caller
       }
@@ -1451,16 +1293,7 @@ export class SniHandler {
     }
 
     // If we couldn't extract an SNI, check if this is a valid ClientHello
-    // If it is, but we couldn't get an SNI, it might be a fragment or
-    // a connection race situation
     if (this.isClientHello(buffer)) {
-      // Check if we have a cached session for this IP
-      const sessionCachedSni = this.getCachedSession(connectionInfo.sourceIp);
-      if (sessionCachedSni) {
-        log(`Using session cache for ClientHello without SNI: ${sessionCachedSni}`);
-        return sessionCachedSni;
-      }
-
       log('Valid ClientHello detected, but no SNI extracted - might need more data');
     }
 

ts/classes.pp.timeoutmanager.ts

@@ -0,0 +1,190 @@
+import type { IConnectionRecord, IPortProxySettings } from './classes.pp.interfaces.js';
+
+/**
+ * Manages timeouts and inactivity tracking for connections
+ */
+export class TimeoutManager {
+  constructor(private settings: IPortProxySettings) {}
+  
+  /**
+   * Ensure timeout values don't exceed Node.js max safe integer
+   */
+  public ensureSafeTimeout(timeout: number): number {
+    const MAX_SAFE_TIMEOUT = 2147483647; // Maximum safe value (2^31 - 1)
+    return Math.min(Math.floor(timeout), MAX_SAFE_TIMEOUT);
+  }
+  
+  /**
+   * Generate a slightly randomized timeout to prevent thundering herd
+   */
+  public randomizeTimeout(baseTimeout: number, variationPercent: number = 5): number {
+    const safeBaseTimeout = this.ensureSafeTimeout(baseTimeout);
+    const variation = safeBaseTimeout * (variationPercent / 100);
+    return this.ensureSafeTimeout(
+      safeBaseTimeout + Math.floor(Math.random() * variation * 2) - variation
+    );
+  }
+  
+  /**
+   * Update connection activity timestamp
+   */
+  public updateActivity(record: IConnectionRecord): void {
+    record.lastActivity = Date.now();
+
+    // Clear any inactivity warning
+    if (record.inactivityWarningIssued) {
+      record.inactivityWarningIssued = false;
+    }
+  }
+  
+  /**
+   * Calculate effective inactivity timeout based on connection type
+   */
+  public getEffectiveInactivityTimeout(record: IConnectionRecord): number {
+    let effectiveTimeout = this.settings.inactivityTimeout || 14400000; // 4 hours default
+    
+    // For immortal keep-alive connections, use an extremely long timeout
+    if (record.hasKeepAlive && this.settings.keepAliveTreatment === 'immortal') {
+      return Number.MAX_SAFE_INTEGER;
+    }
+    
+    // For extended keep-alive connections, apply multiplier
+    if (record.hasKeepAlive && this.settings.keepAliveTreatment === 'extended') {
+      const multiplier = this.settings.keepAliveInactivityMultiplier || 6;
+      effectiveTimeout = effectiveTimeout * multiplier;
+    }
+    
+    return this.ensureSafeTimeout(effectiveTimeout);
+  }
+  
+  /**
+   * Calculate effective max lifetime based on connection type
+   */
+  public getEffectiveMaxLifetime(record: IConnectionRecord): number {
+    // Use domain-specific timeout if available
+    const baseTimeout = record.domainConfig?.connectionTimeout || 
+                        this.settings.maxConnectionLifetime || 
+                        86400000; // 24 hours default
+    
+    // For immortal keep-alive connections, use an extremely long lifetime
+    if (record.hasKeepAlive && this.settings.keepAliveTreatment === 'immortal') {
+      return Number.MAX_SAFE_INTEGER;
+    }
+    
+    // For extended keep-alive connections, use the extended lifetime setting
+    if (record.hasKeepAlive && this.settings.keepAliveTreatment === 'extended') {
+      return this.ensureSafeTimeout(
+        this.settings.extendedKeepAliveLifetime || 7 * 24 * 60 * 60 * 1000 // 7 days default
+      );
+    }
+    
+    // Apply randomization if enabled
+    if (this.settings.enableRandomizedTimeouts) {
+      return this.randomizeTimeout(baseTimeout);
+    }
+    
+    return this.ensureSafeTimeout(baseTimeout);
+  }
+  
+  /**
+   * Setup connection timeout
+   * @returns The cleanup timer
+   */
+  public setupConnectionTimeout(
+    record: IConnectionRecord, 
+    onTimeout: (record: IConnectionRecord, reason: string) => void
+  ): NodeJS.Timeout {
+    // Clear any existing timer
+    if (record.cleanupTimer) {
+      clearTimeout(record.cleanupTimer);
+    }
+    
+    // Calculate effective timeout
+    const effectiveLifetime = this.getEffectiveMaxLifetime(record);
+    
+    // Set up the timeout
+    const timer = setTimeout(() => {
+      // Call the provided callback
+      onTimeout(record, 'connection_timeout');
+    }, effectiveLifetime);
+    
+    // Make sure timeout doesn't keep the process alive
+    if (timer.unref) {
+      timer.unref();
+    }
+    
+    return timer;
+  }
+  
+  /**
+   * Check for inactivity on a connection
+   * @returns Object with check results
+   */
+  public checkInactivity(record: IConnectionRecord): {
+    isInactive: boolean;
+    shouldWarn: boolean;
+    inactivityTime: number;
+    effectiveTimeout: number;
+  } {
+    // Skip for connections with inactivity check disabled
+    if (this.settings.disableInactivityCheck) {
+      return {
+        isInactive: false,
+        shouldWarn: false,
+        inactivityTime: 0,
+        effectiveTimeout: 0
+      };
+    }
+    
+    // Skip for immortal keep-alive connections
+    if (record.hasKeepAlive && this.settings.keepAliveTreatment === 'immortal') {
+      return {
+        isInactive: false,
+        shouldWarn: false,
+        inactivityTime: 0,
+        effectiveTimeout: 0
+      };
+    }
+    
+    const now = Date.now();
+    const inactivityTime = now - record.lastActivity;
+    const effectiveTimeout = this.getEffectiveInactivityTimeout(record);
+    
+    // Check if inactive
+    const isInactive = inactivityTime > effectiveTimeout;
+    
+    // For keep-alive connections, we should warn first
+    const shouldWarn = record.hasKeepAlive && 
+                       isInactive && 
+                       !record.inactivityWarningIssued;
+    
+    return {
+      isInactive,
+      shouldWarn,
+      inactivityTime,
+      effectiveTimeout
+    };
+  }
+  
+  /**
+   * Apply socket timeout settings
+   */
+  public applySocketTimeouts(record: IConnectionRecord): void {
+    // Skip for immortal keep-alive connections
+    if (record.hasKeepAlive && this.settings.keepAliveTreatment === 'immortal') {
+      // Disable timeouts completely for immortal connections
+      record.incoming.setTimeout(0);
+      if (record.outgoing) {
+        record.outgoing.setTimeout(0);
+      }
+      return;
+    }
+    
+    // Apply normal timeouts
+    const timeout = this.ensureSafeTimeout(this.settings.socketTimeout || 3600000); // 1 hour default
+    record.incoming.setTimeout(timeout);
+    if (record.outgoing) {
+      record.outgoing.setTimeout(timeout);
+    }
+  }
+}

ts/classes.pp.tlsmanager.ts

@@ -0,0 +1,206 @@
+import * as plugins from './plugins.js';
+import type { IPortProxySettings } from './classes.pp.interfaces.js';
+import { SniHandler } from './classes.pp.snihandler.js';
+
+/**
+ * Interface for connection information used for SNI extraction
+ */
+interface IConnectionInfo {
+  sourceIp: string;
+  sourcePort: number;
+  destIp: string;
+  destPort: number;
+}
+
+/**
+ * Manages TLS-related operations including SNI extraction and validation
+ */
+export class TlsManager {
+  constructor(private settings: IPortProxySettings) {}
+  
+  /**
+   * Check if a data chunk appears to be a TLS handshake
+   */
+  public isTlsHandshake(chunk: Buffer): boolean {
+    return SniHandler.isTlsHandshake(chunk);
+  }
+  
+  /**
+   * Check if a data chunk appears to be a TLS ClientHello
+   */
+  public isClientHello(chunk: Buffer): boolean {
+    return SniHandler.isClientHello(chunk);
+  }
+  
+  /**
+   * Extract Server Name Indication (SNI) from TLS handshake
+   */
+  public extractSNI(
+    chunk: Buffer, 
+    connInfo: IConnectionInfo, 
+    previousDomain?: string
+  ): string | undefined {
+    // Use the SniHandler to process the TLS packet
+    return SniHandler.processTlsPacket(
+      chunk,
+      connInfo,
+      this.settings.enableTlsDebugLogging || false,
+      previousDomain
+    );
+  }
+  
+  /**
+   * Handle session resumption attempts
+   */
+  public handleSessionResumption(
+    chunk: Buffer, 
+    connectionId: string,
+    hasSNI: boolean
+  ): { shouldBlock: boolean; reason?: string } {
+    // Skip if session tickets are allowed
+    if (this.settings.allowSessionTicket !== false) {
+      return { shouldBlock: false };
+    }
+    
+    // Check for session resumption attempt
+    const resumptionInfo = SniHandler.hasSessionResumption(
+      chunk,
+      this.settings.enableTlsDebugLogging || false
+    );
+    
+    // If this is a resumption attempt without SNI, block it
+    if (resumptionInfo.isResumption && !hasSNI && !resumptionInfo.hasSNI) {
+      if (this.settings.enableTlsDebugLogging) {
+        console.log(
+          `[${connectionId}] Session resumption detected without SNI and allowSessionTicket=false. ` +
+          `Terminating connection to force new TLS handshake.`
+        );
+      }
+      return { 
+        shouldBlock: true, 
+        reason: 'session_ticket_blocked' 
+      };
+    }
+    
+    return { shouldBlock: false };
+  }
+  
+  /**
+   * Check for SNI mismatch during renegotiation
+   */
+  public checkRenegotiationSNI(
+    chunk: Buffer,
+    connInfo: IConnectionInfo,
+    expectedDomain: string,
+    connectionId: string
+  ): { hasMismatch: boolean; extractedSNI?: string } {
+    // Only process if this looks like a TLS ClientHello
+    if (!this.isClientHello(chunk)) {
+      return { hasMismatch: false };
+    }
+    
+    try {
+      // Extract SNI with renegotiation support
+      const newSNI = SniHandler.extractSNIWithResumptionSupport(
+        chunk,
+        connInfo,
+        this.settings.enableTlsDebugLogging || false
+      );
+
+      // Skip if no SNI was found
+      if (!newSNI) return { hasMismatch: false };
+
+      // Check for SNI mismatch
+      if (newSNI !== expectedDomain) {
+        if (this.settings.enableTlsDebugLogging) {
+          console.log(
+            `[${connectionId}] Renegotiation with different SNI: ${expectedDomain} -> ${newSNI}. ` +
+            `Terminating connection - SNI domain switching is not allowed.`
+          );
+        }
+        return { hasMismatch: true, extractedSNI: newSNI };
+      } else if (this.settings.enableTlsDebugLogging) {
+        console.log(
+          `[${connectionId}] Renegotiation detected with same SNI: ${newSNI}. Allowing.`
+        );
+      }
+    } catch (err) {
+      console.log(
+        `[${connectionId}] Error processing ClientHello: ${err}. Allowing connection to continue.`
+      );
+    }
+    
+    return { hasMismatch: false };
+  }
+  
+  /**
+   * Create a renegotiation handler function for a connection
+   */
+  public createRenegotiationHandler(
+    connectionId: string,
+    lockedDomain: string,
+    connInfo: IConnectionInfo,
+    onMismatch: (connectionId: string, reason: string) => void
+  ): (chunk: Buffer) => void {
+    return (chunk: Buffer) => {
+      const result = this.checkRenegotiationSNI(chunk, connInfo, lockedDomain, connectionId);
+      if (result.hasMismatch) {
+        onMismatch(connectionId, 'sni_mismatch');
+      }
+    };
+  }
+  
+  /**
+   * Analyze TLS connection for browser fingerprinting
+   * This helps identify browser vs non-browser connections
+   */
+  public analyzeClientHello(chunk: Buffer): { 
+    isBrowserConnection: boolean; 
+    isRenewal: boolean;
+    hasSNI: boolean;
+  } {
+    // Default result
+    const result = { 
+      isBrowserConnection: false, 
+      isRenewal: false,
+      hasSNI: false
+    };
+    
+    try {
+      // Check if it's a ClientHello
+      if (!this.isClientHello(chunk)) {
+        return result;
+      }
+      
+      // Check for session resumption
+      const resumptionInfo = SniHandler.hasSessionResumption(
+        chunk,
+        this.settings.enableTlsDebugLogging || false
+      );
+      
+      // Extract SNI
+      const sni = SniHandler.extractSNI(
+        chunk,
+        this.settings.enableTlsDebugLogging || false
+      );
+      
+      // Update result
+      result.isRenewal = resumptionInfo.isResumption;
+      result.hasSNI = !!sni;
+      
+      // Browsers typically:
+      // 1. Send SNI extension
+      // 2. Have a variety of extensions (ALPN, etc.)
+      // 3. Use standard cipher suites
+      // ...more complex heuristics could be implemented here
+      
+      // Simple heuristic: presence of SNI suggests browser
+      result.isBrowserConnection = !!sni; 
+      
+      return result;
+    } catch (err) {
+      console.log(`Error analyzing ClientHello: ${err}`);
+      return result;
+    }
+  }
+}

ts/index.ts

@@ -1,6 +1,6 @@
 export * from './classes.iptablesproxy.js';
 export * from './classes.networkproxy.js';
-export * from './classes.portproxy.js';
+export * from './classes.pp.portproxy.js';
 export * from './classes.port80handler.js';
 export * from './classes.sslredirect.js';
-export * from './classes.snihandler.js';
+export * from './classes.pp.snihandler.js';