Golang : Getting Echo framework StartAutoTLS to work

Problem:

You want to try out the Echo framework for Golang and somehow cannot get the AutoTLS recipe to work. What's going on and how to get it to work?

Solution:

In order to get the recipe to work. You need an actual domain name. Yes, you will need to buy one or setup a sub-domain.

localhost or IP address pointing to your web server will not work.

Hence in the documentation:

This recipe demonstrates how to obtain TLS certificates for a domain automatically from Let’s Encrypt. Echo#StartAutoTLS accepts an address which should listen on port 443.

Browse to https://<DOMAIN>. If everything goes fine, you should see a welcome message with TLS enabled on the website.

Yup. Focus on the <DOMAIN> keyword.

Hope this helps!

References:

https://echo.labstack.com/cookbook/auto-tls