Recent entries
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What actually happens in a TLS 1.3 handshake
2026-10-18
One round trip, a key share, and why the session ticket matters more than people think.
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HTTP/2 prioritisation is mostly ignored
2026-09-27
Stream dependencies looked like a good idea. In practice almost nobody implements them.
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Black hole MTU discovery, twenty years on
2026-08-30
Why a single dropped ICMP packet can still stall a connection in 2026.
About
These are personal working notes. I write down things I had to figure out the hard way, mostly so I do not have to figure them out twice. Corrections are welcome.
See the about page for context on what this site is and is not.