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Is your TLS resuming?

There are two main ways that a TLS handshake can go: Full handshake, or resume.There are two benefits to resumption:it can save a round trip between the client and server.it saves CPU cost of a public...

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An AX.25 implementation in Rust

After having written a user space AX.25 stack in C++, I got bitten by the Rust bug. So this is the third time I’ve written an AX.25 stack, and I’ve become exceedingly efficient at it.Here it...

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Connection coalescing breaks the Internet

Connection coalescing is the dumbest idea to ever reach RFC status. I can’t believe nobody stopped it before it got this far.It breaks everything.Thus starts my latest opinion post.What is connection...

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Pike is wrong on bloat

This is my response to Rob Pike’s words On Bloat.I’m not surprised to see this from Pike. He’s a NIH extremist. And yes, in this aspect he’s my spirit animal when coding for fun. I’ll avoid using a...

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Rebuilding FRR with pim6d

Short post today.Turns out that Debian, in its infinite wisdom, disables pim6d in frr. Here’s a short howto on how to build it fixed.$ sudo apt build-dep frr […] $ apt source frr […] $ cd frr-8* $...

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Exploring RISC-V vector instructions

It finally happened! A raspberry pi like device, with a RISC-V CPU supporting the v extension. Aka RVV. Aka vector instructions.I bought one, and explored it a bit.SIMD backgroundFirst some background...

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io_uring, kTLS and Rust for zero syscall HTTPS server

Around the turn of the century we started to get a bigger need for high capacity web servers. For example there was the C10k problem paper.At the time, the kinds of things done to reduce work done per...

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QO100 early success

I have heard and been heard via QO-100! As a licensed radio amateur have sent signals via satellite as far away as Brazil.What it isQO-100 is the first geostationary satellite with an amateur radio...

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Software defined KISS modem

I’ve kept working on my SDR framework in Rust called RustRadio, that I’ve blogged about twicebefore. I’ve been adding a little bit here, a little bit there, with one of my goals being to control a...

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Setting clock source with GNU Radio

I bought a GPS Disciplined Oscillator (GPSDO), because I thought it’d be fun for various projects. Specifically I bought this one.I started by calibrating my ICOM IC-9700. I made sure it got a GPS...

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