Hacker News: justinfrankel

New comment by justinfrankel in "A macOS bug that causes TCP networking to stop working after 49.7 days"

justinfrankel — Tue, 07 Apr 2026 00:01:22 +0000

yep that makes sense

New comment by justinfrankel in "A macOS bug that causes TCP networking to stop working after 49.7 days"

justinfrankel — Mon, 06 Apr 2026 21:30:36 +0000

ah reading their analysis, there are errors that explain this. Particularly this:

  tcp_now   = 4,294,960,000  (frozen at pre-overflow value)
  timer     = 4,294,960,000 + 30,000 = 4,294,990,000
              (exceeds uint32 max → wraps to a small number)

timer wraps to a small number, they say

  TSTMP_GEQ(4294960000, 4294990000)

they forgot to wrap it there, it should be TSTMP_GEQ(4294960000, small_number)

  = (int)(4294960000 - 4294990000)
  = (int)(-30000)
  = -30000 >= 0 ?  → false!

wrong!

There may be a short time period where this bug occurs, and if you get enough TCP connections to TIME_WAIT in that period, they could stick around, maybe. But I think the original post is completely overreacting and was probably written by a LLM, lol.

New comment by justinfrankel in "A macOS bug that causes TCP networking to stop working after 49.7 days"

justinfrankel — Mon, 06 Apr 2026 21:19:02 +0000

have multiple macOS machines with 600-1000+ day uptimes, which do TCP connections every minute or so at a minimum, they are still expiring their TIME_WAIT connections as normal.

these kernel versions:

Darwin Kernel Version 20.6.0: Thu Jul 6 22:12:47 PDT 2023; root:xnu-7195.141.49.702.12~1/RELEASE_ARM64_T8101 arm64

Darwin Kernel Version 17.7.0: Wed Apr 24 21:17:24 PDT 2019; root:xnu-4570.71.45~1/RELEASE_X86_64 x86_64

so... wonder what that's about?

New comment by justinfrankel in "Honeycrisp apples went from marvel to mediocre"

justinfrankel — Sun, 01 Dec 2024 02:04:23 +0000

+1 here -- Mutsu are fantastic, readily available at NYC greenmarkets in the fall and into the winter, though there are pretty large differences in flavor and texture between various orchards too. Samascot is my fav.

New comment by justinfrankel in "Arm64EC – Build and port apps for native performance on Arm"

justinfrankel — Mon, 24 Jun 2024 11:32:18 +0000

If you have an Apple Silicon mac you can install Win11 in UTM and it works great for dev purposes. Can get the free builds via Windows Insider, too.

New comment by justinfrankel in "We've Been Treating Concussions All Wrong"

justinfrankel — Tue, 19 Mar 2024 03:31:13 +0000

except: 1) avoid the possibility of head injuries, and 2) if you suffer more than slight symptoms from daily routine, dial it back

New comment by justinfrankel in "Git log is not a changelog"

justinfrankel — Sun, 17 Jul 2022 02:58:58 +0000

or you might have an alternate prefix for "things that go in development build changelogs but not final changelogs", e.g. "-"

New comment by justinfrankel in "Winamp source code leak"

justinfrankel — Mon, 29 Nov 2021 23:05:23 +0000

you can also install reaper and this plug-in and get something highly winampish with its own special authenticity:

https://landoleet.org/reaplay.zip

New comment by justinfrankel in "Winamp source code leak"

justinfrankel — Mon, 29 Nov 2021 22:55:39 +0000

fwiw dro’s been around a long time and i would be inclined to trust them :)

New comment by justinfrankel in "Exciting Days for ARM Processors"

justinfrankel — Tue, 07 Jul 2020 03:01:34 +0000

Is plain win32 API supported on arm64/Windows? Is there a version of MSVC? Or does one use mingw?

New comment by justinfrankel in "Apple announces it will switch to its own processors for future Macs"

justinfrankel — Mon, 22 Jun 2020 20:01:16 +0000

> I’m not highly conversant with ARM linux, but in my mind I imagine it’s still largely a second class citizen

IMO ARM linux is great, the real thing lacking is good hardware to run it.

New comment by justinfrankel in "A new project: multi-track audio editing (2005)"

justinfrankel — Mon, 08 Jun 2020 02:58:33 +0000

"Interesting to see that it took 15 years to get where he is today."

If I had started it in 2000 it would've taken 20 years to get to where it is (OK fine, would be) today...

New comment by justinfrankel in "UTF-8 Everywhere"

justinfrankel — Tue, 14 Apr 2020 23:43:10 +0000

I would leave this on their facebook page, but fuck facebook so I'm posting it here hoping that someone will find it useful.

We have a zlib-licensed wrapper header for some commonly-used win32 APIs to make them take UTF-8, see:

https://github.com/justinfrankel/WDL/blob/master/WDL/win32_u...

(This is used in REAPER so it's relatively well tested!)

New comment by justinfrankel in "Coronavirus has caused a bicycling boom in New York City"

justinfrankel — Sat, 14 Mar 2020 19:18:05 +0000

I have short-reach dual pivot brake calipers on a bike which sees >2000 miles year-round each year in NYC, and my rims are still fine after 7 years.

From my experience, stopping distance is usually dictated by road conditions more than the brakes. This is with 34mm wide tires, and properly adjusted brakes (a lot of times when people complain about rim brakes, the issue is that they are not working properly).

Side note: fenders are a must!

New comment by justinfrankel in "Reaper: Digital Audio Workstation"

justinfrankel — Sun, 22 Dec 2019 02:50:12 +0000

I'm not sure why, either... but since we're here: REAPER is very programmable which might appeal to readers of this site. Specifically:

ReaScript: can program high level UIs/project manipulation/etc in Lua or EEL2

JSFX: can write realtime signal processors in EEL2

Video: can write/edit video FX in EEL2 (a ton of included presets are there which can be tweaked on the fly)

New comment by justinfrankel in "New York City to 'break car culture' and build more than 250 new bike lanes"

justinfrankel — Sat, 02 Nov 2019 01:26:21 +0000

This bill is an offensive joke -- more than 2 years until the first plan is due? The first plan is due after the next city council and mayoral election.

The new city government could completely cancel the bill if they felt like it.

How many people will be killed by cars in the meantime?

IMO if you're a city responsible for the safety of your citizens, and you agree what the right thing is to do, adding unnecessary delay for no real reason is reprehensible.

A quote from the NYT article https://www.nytimes.com/2019/10/28/nyregion/nyc-biking-death...

"To gain Mr. de Blasio’s support, Mr. Johnson’s office agreed to push back the start date for the first streets plan, from this month to December 2021, around the time the next mayor takes office."

New comment by justinfrankel in "Practice Sight-Reading Music"

justinfrankel — Mon, 21 Oct 2019 02:39:04 +0000

Very cool but Bb doesn't seem to work right here: https://1014.org/_/sightread_bb.png

New comment by justinfrankel in "Deciphering the postcard-sized raytracer"

justinfrankel — Tue, 25 Dec 2018 21:36:48 +0000

This is awesome!

There’s a bug in the deobfuscated version — sizeof(letters) should be 60 or sizeof(letters)-1 (that version reads past the end of the buffer otherwise).

New comment by justinfrankel in "Removing a recursion in Python, part 1"

justinfrankel — Sat, 15 Dec 2018 21:21:49 +0000

Am I the only one who read this and thought: hmm, for any number 32 or higher, the minimum cost would always be 5? Who cares about recursion when it's such a constrained problem? :)

New comment by justinfrankel in "1/0 = 0"

justinfrankel — Fri, 10 Aug 2018 22:37:15 +0000

FWIW the EEL2 language (part of https://www.cockos.com/wdl/ and what powers REAPER's JSFX audio, video processors, etc) also makes this design decision...