Callback-url-file-3a-2f-2f-2fproc-2fself-2fenviron - //free\\

Here's a story:

The URL is: callback-url-file:///proc/self/environ callback-url-file-3A-2F-2F-2Fproc-2Fself-2Fenviron

What a delightfully encoded URL! Let's decode it and create a full story around it. callback-url-file-3A-2F-2F-2Fproc-2Fself-2Fenviron