D2D API-Based Deployment Summary

✅ What Was Implemented

Instead of exposing the entire D2D web application via public IP (Option 3), we've implemented a secure API-based approach where:

D2D API endpoints are protected with API key authentication
VRG Hub builds its own UI and calls D2D's API
D2D can stay on private network (10.200.1.8) - more secure
No iframe/mixed content issues - clean HTTPS throughout

🏗️ Architecture

Previous Approach (iframe - not recommended)

User Browser (HTTPS)
    ↓
VRG Hub (HTTPS) → iframe embedding → D2D UI (HTTP) ❌ Mixed content warning
    ↓
D2D Backend (Public IP required)

Problems:

❌ Mixed content warnings (HTTPS → HTTP)
❌ Entire D2D UI exposed to internet
❌ No authentication
❌ Security risks with PHI

New Approach (API-based - recommended ✅)

User Browser (HTTPS)
    ↓
VRG Hub Frontend (React UI - HTTPS)
    ↓
VRG Hub Backend Proxy (adds API key)
    ↓ HTTP + X-API-Key header
D2D API (Private: 10.200.1.8:8000)
    ↓
PACS/Worklist

Benefits:

✅ No mixed content warnings
✅ D2D stays on private network
✅ API authentication (X-API-Key)
✅ VRG Hub controls UX
✅ Better security posture

🔐 Security Implementation

API Key Authentication

All D2D API endpoints now require:

X-API-Key: your-api-key-here

Configured via environment variable:

D2D_API_KEYS=key1,key2,key3

Default for testing:

vrg-api-key-2026-secure-change-me

Production: Generate secure keys and set in environment

What's Protected

Protected (require API key):

✅ POST /api/upload - File upload
✅ POST /api/convert - DICOM conversion
✅ POST /api/send - Send to PACS
✅ POST /api/worklist/query - Worklist query
✅ POST /api/worklist/test - Test worklist connection
✅ GET /api/destinations - Get destinations
✅ POST /api/destinations - Add destination
✅ DELETE /api/destinations/{name} - Delete destination
✅ POST /api/destinations/verify - Verify PACS connection
✅ GET /api/archives - List archives
✅ GET /api/archives/{filename} - Download archive
✅ GET /api/worklist/config - Get worklist config

Public (no authentication):

/ - HTML UI (for direct access if needed)
/worklist - Worklist HTML UI
/diagnostics - Diagnostics page
/static/* - Static files (CSS, JS)

📚 Documentation Created

1. API Documentation

File: /home/claudeagent/d2d/API-DOCUMENTATION.md

Contains:

Complete API reference for all endpoints
Request/response examples
Authentication details
Error handling
Usage workflows

2. VRG Hub Integration Guide

File: /home/claudeagent/vrg-hub/D2D-API-INTEGRATION-GUIDE.md

Contains:

Step-by-step integration guide
Backend proxy configuration (Vite, Next.js, Express)
Frontend React component examples
Complete workflow implementation
Security best practices
Deployment checklist

🚀 How to Use

For D2D Administrators

1. Set API Key (Production):

# On d2d-vm
ssh azureuser@10.200.1.8
cd /opt/d2d

# Generate secure API key
export D2D_API_KEYS="$(openssl rand -hex 32)"

# Add to docker-compose.yml or .env
echo "D2D_API_KEYS=${D2D_API_KEYS}" >> .env

# Restart D2D
sudo docker-compose down
sudo docker-compose up -d

# Share API key securely with VRG Hub team
echo $D2D_API_KEYS

2. Keep D2D on Private Network:

# Remove public IP if previously added
az network nic ip-config update \
  --resource-group VRG-PAX8 \
  --nic-name d2d-vmVMNic \
  --name ipconfigd2d-vm \
  --remove publicIPAddress

3. Monitor API Usage:

# Check logs for API calls
ssh azureuser@10.200.1.8
cd /opt/d2d
sudo docker-compose logs -f | grep "X-API-Key"

For VRG Hub Developers

1. Add D2D API proxy to VRG Hub backend

See: /home/claudeagent/vrg-hub/D2D-API-INTEGRATION-GUIDE.md

Quick Start (Vite):

// vite.config.ts
export default defineConfig({
  server: {
    proxy: {
      '/api/d2d': {
        target: 'http://10.200.1.8:8000',
        changeOrigin: true,
        rewrite: (path) => path.replace(/^\/api\/d2d/, '/api'),
        configure: (proxy) => {
          proxy.on('proxyReq', (proxyReq) => {
            proxyReq.setHeader('X-API-Key', process.env.D2D_API_KEY || 'vrg-api-key-2026-secure-change-me');
          });
        },
      },
    },
  },
});

2. Build D2D UI in VRG Hub

See example component in integration guide.

3. Test the integration

// Test upload
const formData = new FormData();
formData.append('file', file);

const response = await fetch('/api/d2d/upload', {
  method: 'POST',
  body: formData
});

console.log(await response.json());
// Expected: { file_id: "...", filename: "...", size: ... }

📊 Current Status

D2D Backend

✅ API key authentication implemented
✅ All endpoints protected
✅ Documentation complete
✅ Committed to GitHub
⏳ Pending: Deploy to d2d-vm (auto-deployment will handle)

D2D Network

Current: Public IP (4.198.108.152:8000) - can be removed
Recommended: Keep on private IP (10.200.1.8:8000)
API still works with authentication

VRG Hub

✅ Integration guide complete
⏳ Pending: Implement backend proxy
⏳ Pending: Build D2D UI component
⏳ Pending: Deploy and test

🔄 Migration Path

From iframe Approach

If you previously implemented the iframe approach:

1. Remove public IP exposure (optional but recommended):

# If you want to keep D2D fully private
az network nic ip-config update \
  --resource-group VRG-PAX8 \
  --nic-name d2d-vmVMNic \
  --name ipconfigd2d-vm \
  --remove publicIPAddress

2. Update VRG Hub:

Remove iframe-based D2dConverter component
Implement API proxy in backend
Build new UI component using D2D API
Test workflow: upload → convert → send

3. Deploy:

Set D2D_API_KEY environment variable
Deploy VRG Hub with new implementation
Test from production URL

🔧 Deployment

D2D VM

Auto-deployment is active!

Changes will auto-deploy within 15 minutes via the GitHub auto-deploy script.

Manual deployment:

ssh azureuser@10.200.1.8
cd /opt/d2d
git pull origin master
sudo docker-compose down
sudo docker-compose build
sudo docker-compose up -d

Verify deployment:

# Test API without key (should fail with 401)
curl http://10.200.1.8:8000/api/destinations

# Test with API key (should succeed)
curl -H "X-API-Key: vrg-api-key-2026-secure-change-me" \
  http://10.200.1.8:8000/api/destinations

VRG Hub

Follow the integration guide to implement the API proxy and UI components.

🎯 Next Steps

Immediate

Test API authentication on D2D:
- Wait for auto-deployment (~15 min)
- Test with curl
- Verify all endpoints require API key
Generate production API key:
- Use strong random key
- Store securely in D2D environment
- Share with VRG Hub team securely

Short Term (This Week)

VRG Hub implementation:
- Add backend proxy
- Build D2D UI component
- Test upload/convert/send workflow
- Test worklist query integration
Security review:
- Ensure API key in environment only
- Verify D2D on private network
- Test authentication enforcement
- Review access logs

Medium Term (This Month)

Enhanced security:
- Rate limiting on API
- Enhanced logging and monitoring
- API key rotation procedure
- Alert on failed auth attempts
Documentation:
- VRG Hub user guide
- Admin procedures
- Troubleshooting guide
- API changelog

📖 Reference Documentation

Document	Location	Purpose
API Documentation	`/home/claudeagent/d2d/API-DOCUMENTATION.md`	Complete API reference
VRG Hub Integration Guide	`/home/claudeagent/vrg-hub/D2D-API-INTEGRATION-GUIDE.md`	Integration instructions
Public IP Deployment	`/home/claudeagent/d2d/PUBLIC-IP-DEPLOYMENT.md`	Public IP approach (not recommended)
Worklist Feature	`/home/claudeagent/d2d/WORKLIST-FEATURE.md`	Worklist functionality
VM Deployment	`/home/claudeagent/d2d/VM-DEPLOYMENT-INFO.md`	D2D VM details

🆚 Comparison: iframe vs API

Aspect	iframe Approach	API Approach
Security	❌ UI exposed	✅ API only, with auth
Network	❌ Needs public IP	✅ Private network OK
HTTPS	❌ Mixed content warning	✅ HTTPS throughout
UX Control	❌ Limited (iframe constraints)	✅ Full control
Authentication	❌ None or HTTP Basic	✅ API key
Performance	⚠️ iframe overhead	✅ Direct API calls
Maintenance	⚠️ Two UIs to maintain	✅ Single UI in VRG Hub
Mobile	⚠️ iframe sizing issues	✅ Responsive design

Winner: API Approach ✅

✅ Summary

What we did:

Added API key authentication to D2D
Created comprehensive API documentation
Created VRG Hub integration guide
Committed everything to GitHub

What you get:

Secure D2D API with authentication
D2D can stay on private network
VRG Hub can build custom UI
No mixed content warnings
Better security posture

What's next:

Auto-deployment will update D2D (within 15 min)
VRG Hub team implements API integration
Test and deploy

Document Created: 2026-01-23 Last Updated: 2026-01-23 Status: ✅ Implementation Complete - Ready for VRG Hub Integration

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D2D API-Based Deployment Summary

✅ What Was Implemented

🏗️ Architecture

Previous Approach (iframe - not recommended)

New Approach (API-based - recommended ✅)

🔐 Security Implementation

API Key Authentication

What's Protected

📚 Documentation Created

1. API Documentation

2. VRG Hub Integration Guide

🚀 How to Use

For D2D Administrators

For VRG Hub Developers

📊 Current Status

D2D Backend

D2D Network

VRG Hub

🔄 Migration Path

From iframe Approach

🔧 Deployment

D2D VM

VRG Hub

🎯 Next Steps

Immediate

Short Term (This Week)

Medium Term (This Month)

📖 Reference Documentation

🆚 Comparison: iframe vs API

✅ Summary