Viewing Origin Response on Adobe Commerce Cloud
Published: November 14, 2024
Recently I was working through an issue on an Adobe Commerce Cloud project where I was interested to see the raw response headers issued by the Magento backend. With Adobe Commerce Cloud, requests are typically routed through Fastly which removes and modifies the origin response headers. My searching and testing wasn’t turning up a solution for my needs. Adobe provides documentation on how to “bypass” Fastly. While this is useful in some cases, such as preventing specific pages from being cached, it still doesn’t allow visibility into the raw response.
I opened a support ticket with Adobe and they provided the below answer. Since I couldn’t find it documented anywhere publicly, I figured I’d share it here.
The Solution
This is possible by SSH-ing to the backend server and issuing the following curl command directly to localhost:8080 (replace www.example.com with the domain of the website you are trying to access).
$ curl -D - -o /dev/null -s http://localhost:8080/ -H "X-Forwarded-Proto: https" -H "Host: www.example.com"
I had tried something similar (using curl --resolve) prior to contacting Adobe, but hadn’t been able to get it to work.
The example above would load the home page of example.com. The localhost URL path can also be changed to load a specific page. For example, in my case I was interested to see the response headers of the 404 page, which I achieved as follows.
$ curl -D - -o /dev/null -s http://localhost:8080/404 -H "X-Forwarded-Proto: https" -H "Host: www.example.com"
Hi, I'm Max!