Environment Variables

Coding
1

Hi. How do I add environment variables in the code. For example I want to get data from .env?

2

Not sure what you mean by “code”, but if you’re asking about Caddyfile:

1 Like
3

Do I need to modify from bash? As when I do it according to the documentation it throws error

4

No idea what you’re doing. Could you share your configuration and the exact error you’re getting?

5

For example I have this .env variable DOMAIN_NAME = *.test *.smth . In CADDYFILE now I have hardcoded values path *.test *.smth which works now but I need to make it path {$DOMAIN_NAME} which doesn’t work for now.

6

It’s really hard to help without seeing the actual configuration you’re running. At this point, it’s all guesswork, and honestly, it’s getting a bit tiring trying to figure out what you’re actually doing.

If you can share a concrete example or config, I’ll be happy to take another look. Otherwise, this might be my last reply on this one.

Here’s an example Caddyfile:

{
	http_port 8080
}

{$DOMAIN_NAME:localhost:8080} {
	respond "{host} is alive!"
}

http:// {
	respond "default is alive!"
}

Running it with:

$ DOMAIN_NAME="*.test:8080, *.smth:8080" caddy run --config Caddyfile

Produces this autosave.json:

$ cat autosave.json | jq .
{
  "apps": {
    "http": {
      "http_port": 8080,
      "servers": {
        "srv0": {
          "listen": [
            ":8080"
          ],
          "routes": [
            {
              "handle": [
                {
                  "handler": "subroute",
                  "routes": [
                    {
                      "handle": [
                        {
                          "body": "{http.request.host} is alive!",
                          "handler": "static_response"
                        }
                      ]
                    }
                  ]
                }
              ],
              "match": [
                {
                  "host": [
                    "*.test",
                    "*.smth"
                  ]
                }
              ],
              "terminal": true
            },
            {
              "handle": [
                {
                  "handler": "subroute",
                  "routes": [
                    {
                      "handle": [
                        {
                          "body": "default is alive!",
                          "handler": "static_response"
                        }
                      ]
                    }
                  ]
                }
              ],
              "terminal": true
            }
          ]
        }
      }
    }
  }
}

And the test results:

$ curl http://127.0.0.1:8080 -H 'Host: foo.test'
foo.test is alive!

$ curl http://127.0.0.1:8080 -H 'Host: bar.smth'
bar.smth is alive!

curl http://127.0.0.1:8080 -H 'Host: example.com'
default is alive!

So yep, the environment variable gets picked up by Caddy just fine.