BREAKING CHANGE(IRouteSecurity): Consolidate duplicated IRouteSecurity interfaces by unifying property names

ts/forwarding/handlers/http-handler.ts

@@ -38,6 +38,7 @@ export class HttpForwardingHandler extends ForwardingHandler {
     // For HTTP, we mainly handle parsed requests, but we can still set up
     // some basic connection tracking
     const remoteAddress = socket.remoteAddress || 'unknown';
+    const localPort = socket.localPort || 80;
     
     socket.on('close', (hadError) => {
       this.emit(ForwardingHandlerEvents.DISCONNECTED, {
@@ -54,7 +55,8 @@ export class HttpForwardingHandler extends ForwardingHandler {
     });
     
     this.emit(ForwardingHandlerEvents.CONNECTED, {
-      remoteAddress
+      remoteAddress,
+      localPort
     });
   }
   
@@ -64,8 +66,11 @@ export class HttpForwardingHandler extends ForwardingHandler {
    * @param res The HTTP response
    */
   public handleHttpRequest(req: plugins.http.IncomingMessage, res: plugins.http.ServerResponse): void {
-    // Get the target from configuration
-    const target = this.getTargetFromConfig();
+    // Get the local port from the request (for 'preserve' port handling)
+    const localPort = req.socket.localPort || 80;
+    
+    // Get the target from configuration, passing the incoming port
+    const target = this.getTargetFromConfig(localPort);
     
     // Create a custom headers object with variables for substitution
     const variables = {