TL;DR. golang.org/x/net/idna.Lookup.ToASCII runs UTS-46 NFKC mapping 0-9. A pre-IDNA net.ParseIP check rejects the NO_PROXY lists, TLS-SNI routers, and cookie-domain validators that TrimRight + ParseAddr golang.org/x/net/http/httpproxy, the canonical safe pattern, and two I ran into this one while writing a Go HTTP client for a private project. I idna.Lookup.ToASCII canonicalising the host The sha
War Story: I Ditched My CS Degree for a Bootcamp and Became a Go 1.25 Engineer I never thought I’d be writing this. Two years ago, I was three semesters into a traditional Computer Science degree, drowning in abstract calculus and outdated Java curriculum, wondering if I’d ever write code that actually mattered. Today, I’m a backend engineer working full-time with Go 1.25, building low-latency m