Case insensitive path lookup

[nikcio (Nikolaj Brask-Nielsen)]

1. Caddy version (caddy version):

2.4.3

2. How I run Caddy:

I run caddy in a docker container with a connection to a Umbraco instance.

a. System environment:

Docker

b. Command:

docker-compose up -d

c. Service/unit/compose file:

version: "3.8"

services:
    umbraco-db:
      image: mcr.microsoft.com/mssql/server:latest
      user: root
      env_file: ./configs/ms.sql.env
      volumes:
        - umbraco.db:/var/opt/mssql/data
      restart: always
      ports:
        - '3930:1433'
        - '3931:1434'
    
    umbraco:
      restart: always
      depends_on:
        - umbraco-db
      build:
        context: .
        dockerfile: Dockerfile
      entrypoint: ["./wait-for-it.sh", "host.docker.internal:3930", "-t", "120", "--", "dotnet", "Web.Umbraco.dll"]
      volumes: 
        - umbraco.media:/app/wwwroot/media
        - ./src/Web.Umbraco/Views:/app/Views
        - ./src/Web.Umbraco/uSync:/app/uSync
  
    caddy:
      image: caddy:latest
      restart: unless-stopped
      ports: 
        - "81:81"
        - "433:433"
      volumes: 
        - ./Caddyfile:/etc/caddy/Caddyfile
        - ./site:/server
        - caddy_data:/data
        - caddy_config:/config

volumes:
    umbraco.db:
    umbraco.media:
    caddy_data:
    caddy_config:

d. My complete Caddyfile or JSON config:

localhost:81 {
    reverse_proxy umbraco:80
}

3. The problem I’m having:

I’m having problems with URLs with uppercase letters when the URL is referring to a file. For example https://localhost:81/umbraco/views/propertyEditors/grid/dialogs/layoutconfig.html will send a 404 not found error when https://localhost:81/umbraco/views/propertyeditors/grid/dialogs/layoutconfig.html will find the file, therefore, I’m wondering if it’s possible to make a case-insensitive lookup so I don’t have to manually rewrite each problematic URL.

[francislavoie]

I don’t think anything built into Caddy can do this, but this sort of thing would be trivial to implement as a plugin for yourself:

Extending Caddy - Caddy Documentation

[nikcio (Nikolaj Brask-Nielsen)]

Sadly I don’t know any go and therefore have a hard time with understanding what to do. I also figured out that force lowercasing the path wouldn’t solve my problem because not all my files are located in lowercase directories. So I would actually need a case-insensitive lookup.

[francislavoie]

You’ll need to solve that at your application level, really.

[matt (Matt Holt)]

Some file systems are case insensitive, you could try that.

But the best solution imo is to have properly cased URIs (e.g. don’t href to the wrong cases).