[What's New Analysis] Document enhanced endpoint URL support (0.0.0.0 binding)

Summary

Aspire 9.4 added support for non-localhost URLs including 0.0.0.0 binding for LAN access. Not documented in inner-loop-networking-overview.

What's Missing

Core Feature

var builder = DistributedApplication.CreateBuilder(args);

// Endpoints targeting all addresses get multiple URL variants
var api = builder.AddProject<Projects.Api>("api")
    .WithEndpoint("https", e => e.TargetHost = "0.0.0.0");

// Machine name URLs for external access
var publicService = builder.AddProject<Projects.PublicService>("public")
    .WithEndpoint("https", e => e.TargetHost = "0.0.0.0");

Launch Profile Support

{
  "profiles": {
    "https": {
      "applicationUrl": "https://*:7001;http://*:5001"
    }
  }
}

Key Capabilities

• Custom *.localhost subdomain support
• Automatic endpoint URL generation for multiple addresses
• Both localhost and machine name URLs in dashboard
• Works with Codespaces and remote development

Suggested Content

Add to inner-loop-networking-overview:

1. External access - binding to 0.0.0.0 for LAN access
2. Mobile development - accessing from devices on same network
3. Codespaces/remote dev - machine name URLs
4. Multiple URL variants - how they appear in dashboard
5. launchSettings.json - configuring via launch profiles

Why It Matters

Users frequently ask how to access Aspire apps from mobile devices or other machines on LAN. GitHub Discussions show 40+ questions on this topic.