DAX WebAppServer

DAX WebAppServer is the main entry point of the DAX (Distributed Architecture eXamples) ecosystem — a full-stack web application server that integrates an Angular SPA, a .NET Backend API, and a BFF (Backend for Frontend) secured by YARP reverse proxy.

This application interacts with other core services in the DAX architecture:

• DAX IdentityServer — Provides secure authentication and token-based authorization
• DAX User Management — Manages registered users, roles, and access control (e.g. blocking users)

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Project Structure

Component	Description
Angular SPA	Frontend user interface (served via proxy)
Backend API	RESTful API for quiz and user features
BFF (YARP Reverse Proxy)	Bridges frontend to backend + auth flows

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External DAX Services Used

Service	Role in Platform	URL
DAX IdentityServer	Authenticates users and issues access tokens	https://localhost:44300/
DAX User Management	Handles role assignments, user blocking, user metadata	https://localhost:44324/

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Local Development URLs

Component	Port/Cluster	URL
Angular SPA	angularCluster	https://localhost:44480/
Backend API	apiCluster	https://localhost:44355/
IdentityServer	identityCluster	https://localhost:44300/
WebAppServer BFF	— (Gateway entry)	https://localhost:44365/

All traffic flows securely through the DAX WebAppServer using YARP reverse proxy.

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Security & Proxying with YARP

DAX WebAppServer uses YARP (Yet Another Reverse Proxy) to:

• Centralize routing and secure access to backend and external services
• Enforce cookie- and token-based security
• Prevent XSS, CSRF, and cross-origin misconfigurations

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Getting Started

Prerequisites

• .NET 8 SDK
• Node.js & npm
• Angular CLI: npm install -g @angular/cli

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Start Services

1. Backend API

cd QuizTowerPlatform.Api
dotnet restore
dotnet run --urls=https://localhost:44355

2. BFF (WebAppServer)

cd QuizTowerPlatform.Bff
dotnet restore
dotnet run --urls=https://localhost:7184

3. Angular SPA

cd QuizTowerPlatform.ClientApp
npm install
ng serve --port 44480

4. IdentityServer (from separate repo)

cd ../DaxIdentityServer
dotnet run --urls=https://localhost:44300

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Contact

Ozkan Mengi – LinkedIn – o.mengi@timelessmedia.nl – timelessmedia.nl

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License

This project is part of the DAX sandbox and intended for educational/demo use.