demo · v132
The localhost dev-server papercut, replayed
Why this change matters: a dev runs a local TLS server on localhost:8443 sending HSTS, then tears it down and starts a plain HTTP server on localhost:8080. Pre-132 Chrome remembered the HSTS entry and refused HTTP; the dev couldn't connect. Walk both sides of the timeline below.
pre-132 timeline
132+ timeline
what the network stack sees on step 5
see also
- HSTS on localhost — feature index
- URL upgrade simulator
- ChromeStatus entry
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