A DNS Packet, Taken Apart
A DNS answer can repeat a name without carrying its bytes twice. I built a small Elixir decoder to see exactly where those bytes go, and the interesting part...
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I Gave My App a URL
A form, a URL, a page title. I built a small Hanami importer to examine what that ordinary feature lets somebody ask of a server. The interesting part starts...
Nowhere to Put the Current User
Adding authentication meant answering a question the first post in this series had only raised: if the action is a frozen object shared across requests, wher...
Green, and Injectable
I wrote a test for the one thing I had never thought to check, and it failed. Nothing my application rendered had ever been escaped, on any page, while every...
Everything Before the Click
Every tool my agent had until now could be run twice with no consequence. Adding one that puts something in my actual Amazon cart changed what the code aroun...