daniel.haxx.se
daniel.haxx.se
Daniel Stenberg
I’m Daniel Stenberg, an internet protocol geek and developer of network related open source projects. I live and work in Sweden. daniel.haxx.se is my site and I post what I feel like.
Latest Posts
One of the established power features of the curl command line tool is its support for “globbing”. It is a built-in way to specify ranges and sets in different ways and have curl iterate over them to simplify repeated transfers. For...
yes, as in singular one. Back in April 2026 Anthropic caused a lot of media noise when they concluded that their new AI model Mythos is dangerously good at finding security flaws in source code. Apparently Mythos was so good at this that...
In this era of powerful tools to find software bugs, we now see tools find a lot of problems at a high speed. This causes problems for developers, as dealing with the growing list of issues is hard. It may take a longer time to address...
The picture was taken by mr Nasser and shared on social media In appendix A of the book Root cause: Stories and lessons from two decades of Backend Engineering Bugs, author Hussein Nasser has these wonderful words to say about me: Daniel...
You always find the new curl releases on the curl site! Release presentation At 10:00 CEST (08:00 UTC) I will do my transitional live-streamed video presentation of curl 8.20.0 on my twitch channel. Numbers the 274th release8 changes49...
As I have been preparing slides for my coming talk at foss-north on April 28, 2026 I figured I could take the opportunity and share a glimpse of the current reality here on my blog. The high quality chaos era, as I call it. No more AI...
Software and digital security should rely on verification, rather than trust. I want to strongly encourage more users and consumers of software to verify curl. And ideally require that you could do at least this level of verification of...
My email address is spelled out in the curl license The curl license appears in many products Some people have problems with their products and need someone to email A few of these discover my email in their product Occasionally, the...
The NTLM authentication method was always a beast. It is a proprietary protocol designed by Microsoft which was reverse engineered a long time ago. That effort resulted in the online documentation that I based the curl implementation on...
In May 2010 we merged support for the RTMP protocol suite into curl, in our desire to support the world’s internet transfer protocols. RTMP The protocol is an example of the spirit of an earlier web: back when we still thought we would...
In the spring of 2020 I decided to finally do something about the lack of visualizations for how the curl project is performing, development wise. How does the line of code growth look like? How many command line options have we had over...
Background: nuget.org is a Microsoft owned and run service that allows users to package software and upload it to nuget so that other users can download it. It is targeted for .Net developers but there is really no filter in what you can...
Release presentation Numbers the 273rd release8 changes63 days (total: 10,712)264 bugfixes (total: 13,640)538 commits (total: 38,024)0 new public libcurl function (total: 100)0 new curl_easy_setopt() option (total: 308)0 new curl command...
curl and libcurl are written in C. Rather low level components present in many software systems. They are typically not part of any ecosystem at all. They’re just a tool and a library. In lots of places on the web when you mention an...
The Linux Foundation, the organization that we want to love but that so often makes that a hard bargain, has created something they call “Insights” where they gather lots of metrics on Open Source projects. I held back so I never blogged...