Small experiments in networking, protocols and edge computing. Updated whenever I find time.
2026-10-28
Spent an evening reading RFC 6455 again. The masking rules for client-to-server frames are still the part everyone gets wrong on the first try, myself included. Wrote a tiny parser to keep the details straight; it handles fragmented messages and ping/pong interleaving the way the spec intends.
2026-09-14
Cold starts are mostly a solved problem, but connection setup is not free: every fresh TCP plus TLS handshake still costs a round trip or two. Keeping connections warm and reusing them where the platform allows makes a bigger difference than any micro-optimisation in the handler itself.
2026-08-02
A short workflow that works for me: filter early, follow one stream at a time, and annotate as you go. Wireshark display filters are worth learning properly; ten minutes with the reference saves an hour of scrolling.