feat(core): Add backendProtocol option to support HTTP/2 client sessions alongside HTTP/1. This update enhances NetworkProxy's core functionality by integrating HTTP/2 support in server creation and request handling, while updating plugin exports and documentation accordingly.

ts/networkproxy/classes.np.networkproxy.ts

@@ -16,8 +16,8 @@ export class NetworkProxy implements IMetricsTracker {
   public options: INetworkProxyOptions;
   public proxyConfigs: IReverseProxyConfig[] = [];
   
-  // Server instances
-  public httpsServer: plugins.https.Server;
+  // Server instances (HTTP/2 with HTTP/1 fallback)
+  public httpsServer: any;
   
   // Core components
   private certificateManager: CertificateManager;
@@ -66,6 +66,8 @@ export class NetworkProxy implements IMetricsTracker {
       connectionPoolSize: optionsArg.connectionPoolSize || 50,
       portProxyIntegration: optionsArg.portProxyIntegration || false,
       useExternalPort80Handler: optionsArg.useExternalPort80Handler || false,
+      // Backend protocol (http1 or http2)
+      backendProtocol: optionsArg.backendProtocol || 'http1',
       // Default ACME options
       acme: {
         enabled: optionsArg.acme?.enabled || false,
@@ -185,33 +187,35 @@ export class NetworkProxy implements IMetricsTracker {
       await this.certificateManager.initializePort80Handler();
     }
     
-    // Create the HTTPS server
-    this.httpsServer = plugins.https.createServer(
+    // Create HTTP/2 server with HTTP/1 fallback
+    this.httpsServer = plugins.http2.createSecureServer(
       {
         key: this.certificateManager.getDefaultCertificates().key,
         cert: this.certificateManager.getDefaultCertificates().cert,
-        SNICallback: (domain, cb) => this.certificateManager.handleSNI(domain, cb)
-      },
-      (req, res) => this.requestHandler.handleRequest(req, res)
+        allowHTTP1: true,
+        ALPNProtocols: ['h2', 'http/1.1']
+      }
     );
 
-    // Configure server timeouts
-    this.httpsServer.keepAliveTimeout = this.options.keepAliveTimeout;
-    this.httpsServer.headersTimeout = this.options.headersTimeout;
-    
-    // Setup connection tracking
+    // Track raw TCP connections for metrics and limits
     this.setupConnectionTracking();
-    
-    // Share HTTPS server with certificate manager
+
+    // Handle incoming HTTP/2 streams
+    this.httpsServer.on('stream', (stream: any, headers: any) => {
+      this.requestHandler.handleHttp2(stream, headers);
+    });
+    // Handle HTTP/1.x fallback requests
+    this.httpsServer.on('request', (req: any, res: any) => {
+      this.requestHandler.handleRequest(req, res);
+    });
+
+    // Share server with certificate manager for dynamic contexts
     this.certificateManager.setHttpsServer(this.httpsServer);
-    
-    // Setup WebSocket support
+    // Setup WebSocket support on HTTP/1 fallback
     this.webSocketHandler.initialize(this.httpsServer);
-    
-    // Start metrics collection
+    // Start metrics logging
     this.setupMetricsCollection();
-    
-    // Setup connection pool cleanup interval
+    // Start periodic connection pool cleanup
     this.connectionPoolCleanupInterval = this.connectionPool.setupPeriodicCleanup();
 
     // Start the server