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Guus der Kinderen

@guusdk@toot.igniterealtime.org
mastodon 4.7.2
  • Open on toot.igniterealtime.org

XMPP-based software engineer from the Netherlands. I am an active member of the Ignite Realtime community and a lead developer of its Openfire real-time communications server implementation.

270 Followers
161 Following
35 Posts
Joined November 13, 2022
Work:
Software Engineer, XMPP
Website:
https://www.goodbytes.nl
XMPP:
xmpp:guus.der.kinderen@igniterealtime.org
Github:
https://github.com/guusdk
Open post
Guus der Kinderen @guusdk@toot.igniterealtime.org
· 6mo ago

Quietly slipped in today: the XSF has published a new XEP - XEP-0512 - which I had the pleasure of authoring.

It's a small step, but one that opens up some interesting directions for #XMPP implementations. Curious to see where people take it from here.

Details: https://xmpp.org/extensions/xep-0512.html

toot.igniterealtime.org
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Open post
Guus der Kinderen @guusdk@toot.igniterealtime.org
· 8mo ago

I am experimenting with new rendering libraries for the XMPP Network Graph, which shows how servers and users connect across the XMPP network. The graph has grown so large that it does not render well on many devices.

Live demo: https://xmppnetwork.goodbytes.im/sigma.html

#XMPP #Decentralization #Fediverse #OpenSource #DataVisualization #Networking

XMPP Network Graph
xmppnetwork.goodbytes.im

XMPP Network Graph

A visualization of interconnected XMPP domains

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Open post
Guus der Kinderen @guusdk@toot.igniterealtime.org
· 4mo ago

I was discussing SASL channel binding protocol details with @dwd@toot.igniterealtime.org and somehow, we're now talking about Dutch proverbs including bicycles.

toot.igniterealtime.org

Dave Cridland (@dwd@toot.igniterealtime.org) - IgniteRealtime's Mastodon

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Open post
Guus der Kinderen @guusdk@toot.igniterealtime.org
· 5mo ago

Once in a while, I check my email spam folder. Today, I found a 'business opportunity' in there, that ended like this:

> That’s crucial for quality.”} ```json``` {

This is how you know it's legit.

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Open post
Guus der Kinderen @guusdk@toot.igniterealtime.org
· 7mo ago

Our IgniteRealtime Mastodon instance needs a new home! After years of generous sponsorship, we're now looking for hosting options. I'm new to Mastodon hosting. Any advice, recommendations, or offers to help would be greatly appreciated! Let's keep the community alive. #Mastodon #Fediverse #HostingHelp

toot.igniterealtime.org

IgniteRealtime's Mastodon

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Open post
Guus der Kinderen @guusdk@toot.igniterealtime.org
· 6mo ago

My day in a nutshell:

> Created February 26, 2012 at 8:06 PM
> Resolved March 13, 2026 at 7:55 PM

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Open post
Guus der Kinderen @guusdk@toot.igniterealtime.org
· 6mo ago

Elke keer hetzelfde: Ter Apel te vol, #COA krijgt een boete. En weer betaalt de ene overheid de andere. Het COA kan de instroom niet stoppen - nieuwe opvanglocaties zijn politieke keuzes. En dus herhalen we het ritueel opnieuw en opnieuw en opnieuw. Symboolpolitiek met belastinggeld.

https://www.rd.nl/artikel/1141978-maximale-dwangsom-voor-coa-om-ter-apel-mogelijk-vandaag-bereikt

toot.igniterealtime.org
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Open post
Guus der Kinderen @guusdk@toot.igniterealtime.org
· 6mo ago

Ooof. @eff@mastodon.social is leaving X, primarily because the platform simply doesn't deliver anymore.

"We posted to Twitter (now known as X) five to ten times a day in 2018. Those tweets garnered somewhere between 50 and 100 million impressions per month. [...] Last year, our 1,500 posts earned roughly 13 million impressions for the entire year. To put it bluntly, an X post today receives less than 3% of the views a single tweet delivered seven years ago."

That's a brutal decline!

https://www.eff.org/deeplinks/2026/04/eff-leaving-x

EFF is Leaving X
Electronic Frontier Foundation

EFF is Leaving X

After almost twenty years on the platform, EFF is logging off of X. This isn’t a decision we made lightly, but it might be overdue.

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Open post
Guus der Kinderen @guusdk@toot.igniterealtime.org
· 6mo ago

I'm currently reviewing a PR that apparently was started in 2017 (that's the date on the first commit in the PR, anyways).

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Open post
Guus der Kinderen @guusdk@toot.igniterealtime.org
· 6mo ago

@deheems@mas.to @nicojanstijne@mastodon.nl Ik zou hiermee door de stad gaan lopen, en mensen verward vragen waar Hoog Catharijne is.

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Open post
Guus der Kinderen @guusdk@toot.igniterealtime.org
· 6mo ago

100.0% this. X-Com: Enemy Unknown has held a solid position in my top 1 of best computer games, ever. #nostalgia #retrogaming https://youtu.be/h58NzkGFgxk?is=z1RRmfzRfipLewBV

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Open post
Guus der Kinderen @guusdk@toot.igniterealtime.org
· 6mo ago

Realized that by carrying my phone around the house while watching the latest Technology Connextras video, I've essentially summoned a tiny, portable, extremely opinionated Alec (@TechConnectify@mas.to) who follows me room to room yelling that all I need is more cables.

Honestly? Glorious.

https://youtu.be/5NG4hycq8n0?si=uNzTzSg_xBosqvbZ

Don't overthink electric car charging (we should be doing it differently)

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Open post
Guus der Kinderen @guusdk@toot.igniterealtime.org
· 7mo ago

Overheard:

"If you believe a meteorologist, it is your own fault"

- a meteorologist.

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Open post
Guus der Kinderen @guusdk@toot.igniterealtime.org
· 7mo ago

@jon@gruene.social You're doing a real-life https://uglybelgianhouses.tumblr.com/ ?

uglybelgianhouses.tumblr.com

UGLY BELGIAN HOUSES

Better to be ugly than to be boring. By @hannescoudenys We run a creative agency in Brussels: @hurae.be

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Open post
Guus der Kinderen @guusdk@toot.igniterealtime.org
· 7mo ago

In the wake of a significant security breach at #Odido information tied to millions of subscribers was leaked. Odido is one of the Netherlands’ largest telecom providers, offering mobile, internet, and TV services to consumers and businesses nationwide.

Rather than pay off ShinyHunters, Odido declined. Refusing to negotiate with extortionists is the right stance, even if this breach should never have happened in the first place.

toot.igniterealtime.org

IgniteRealtime's Mastodon

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Open post
Guus der Kinderen @guusdk@toot.igniterealtime.org
· 5mo ago

Thank you XMPP Standards Foundation (@xmpp@fosstodon.org) for supporting Keep Android Open at https://keepandroidopen.org/open-letter/#signatories @keepandroidopen@techhub.social #KeepAndroidOpen

keepandroidopen.org

An Open Letter to Google regarding Mandatory Developer Registration for Android App Distribution

Open Letter to Google Regarding Mandatory Developer Registration for Third-Party App Distribution

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Open post
Guus der Kinderen @guusdk@toot.igniterealtime.org
· 5mo ago

What a horrible, horrible experience Microsoft Teams continues to be. I I'm getting "We need you to sign in again. This could be a request from your IT department or Teams, or the result of a password update" messages four times in three minutes - which sometimes prevents me from doing things (like chat) - but sometimes its ... fine? Video conferences are on-and-off again success. Random failures while switching from one Teams account to another. I can't fathom people using this voluntarily.

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Open post
Guus der Kinderen @guusdk@toot.igniterealtime.org
· 6mo ago
Replying to
@news@toot.igniterealtime.org cc @mrotteveel@mstdn.social
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Open post
Guus der Kinderen @guusdk@toot.igniterealtime.org
· 6mo ago

@andrzej@hi-low.social heh, someone tried. It seemed... annoyed? It wrote:

Happy April Fools' Day! ?

XEP-0512 "XMPP as Interpretive Dance" is a Humorous XEP published today (April 1st, 2026) by Guus der Kinderen — who is himself from the igniterealtime.org organization. It's an April Fools' joke specification that proposes implementing XMPP through human movement rather than code

"This document expires when all participants are too exhausted to continue."

No code changes are needed or appropriate here. ??

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Open post
Guus der Kinderen @guusdk@toot.igniterealtime.org
· 6mo ago

@mrotteveel@mstdn.social @ionica@mathstodon.xyz daar moet je mee oppassen. Misschien zit er wel wat breekbaars in.

mstdn.social

Mark Rotteveel (@mrotteveel@mstdn.social) - Mastodon 🐘

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Open post
Guus der Kinderen @guusdk@toot.igniterealtime.org
· 7mo ago

@Marloezovic@mastodon.nl Met dít weer, van de straat gehouden worden?! 😄

Fijn dat decentrale oplossingen aandacht krijgen! Eurosky is niet de enige: #XMPP is een open protocol voor instant messaging dat al tientallen apps en diensten mogelijk maakt die gewoon met elkaar samenwerken. Denk WhatsApp, maar dan decentraal en federerend.

Als bestuurslid van de XMPP Standards Foundation en ontwikkelaar van meerdere XMPP-apps vertel ik er graag over. Uren, als je me laat. Nieuwsgierig?

mastodon.nl

Marloes de Koning (@Marloezovic@mastodon.nl) - Mastodon.nl door Stichting Activityclub

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Open post
Guus der Kinderen @guusdk@toot.igniterealtime.org
· 7mo ago

@kevinrns@mstdn.social @xmppjobboard@toot.igniterealtime.org Oh, good idea! I'll see if I can get that added to the automation. Thanks!

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Open post
Guus der Kinderen @guusdk@toot.igniterealtime.org
· 7mo ago

@hmblank@mastodon.social You called it: @nrc_nl@mastodon.nl

mastodon.nl

NRC: "Mona Keijzer stapt uit BBB om ‘vertrouwenscrisis’…" - Mastodon.nl door Stichting Activityclub

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Open post
Guus der Kinderen @guusdk@toot.igniterealtime.org
· 7mo ago

@zeank@mastodon.social I am bombarded with messages like these lately, that weirdly all have to do with integration of voice-based AI integrations.

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Open post
Guus der Kinderen @guusdk@toot.igniterealtime.org
· 7mo ago
Replying to
@opensource *kuch*één-s*kuch*
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Open post
Guus der Kinderen @guusdk@toot.igniterealtime.org
· 12mo ago
Replying to
@DannyMekic Goeie zaak, Danny - niet alleen voor jou persoonlijk, maar ook voor de precedentwerking. Ik stel me zo maar voor dat dit een uitputtingsslag kan zijn. Goed dat je 't toch aangaat!
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Open post
Guus der Kinderen @guusdk@toot.igniterealtime.org
· 13mo ago
Replying to on xoxo.zone
@davidcelis@xoxo.zone I'm not a big fan of Musk, but I can see how a text like that gets you banned anywhere. Unlike what you wrote in that comment, the text _is_ objectively disrespectful.
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Open post
Guus der Kinderen @guusdk@toot.igniterealtime.org
· 13mo ago

@daniel@gultsch.social @matrix@mastodon.matrix.org @delta@chaos.social IgniteRealtime is working on adding this feature to Openfire right now.

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Open post
Guus der Kinderen @guusdk@toot.igniterealtime.org
· 15mo ago

"Publieke sector verliest regie door digitale afhankelijkheid" kopt het NRC vandaag.

Zonde om te zien, wetende dat oplossingen voor het grijpen liggen! Gisteren nog blogde ik via @news@toot.igniterealtime.org over de mogelijkheden die Openfire en aanpalende producten bieden tot een onafhankelijke oplossing voor instant messaging, voice & video en file sharing, juist gericht op die sector!

#digitaleAutonomie #openStandaard #privacy #onafhankelijk

https://discourse.igniterealtime.org/t/empowering-digital-sovereignty-with-openfire-a-secure-and-customizable-communication-platform/95723

https://www.nrc.nl/nieuws/2025/07/06/economieblog-maandag-7-juli-t-m-zondag-13-juli-2025-a4899509

toot.igniterealtime.org
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Open post
Guus der Kinderen @guusdk@toot.igniterealtime.org
· 31mo ago
Replying to
@LordCaramac@discordian.social @queue@todon.eu @FediPact@cyberpunk.lol @vantablack@cyberpunk.lol A few nerds, you say? Have a look at this network graph that includes only a tiny portion of all XMPP server instances. Every circle in that graph is a domain, that each serves multiple nerds (or regular people). Interactive variants of this graph are available on https://xmppnetwork.goodbytes.im
XMPP Network Graph
xmppnetwork.goodbytes.im

XMPP Network Graph

A visualization of interconnected XMPP domains

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Open post
Guus der Kinderen @guusdk@toot.igniterealtime.org
· 7mo ago

@franco@infosec.exchange @xmppjobboard@toot.igniterealtime.org Please not that this is an automated listing. Many listings on this site are sourced from other job boards. For more information on a specific listing, you should reach out to the company that is offering the opening (click on the "Apply for Job" button to get in contact with them)!

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Open post
Guus der Kinderen @guusdk@toot.igniterealtime.org
· 6mo ago

@beyondmachines1@infosec.exchange Whenever I watch videos from Midlife Stockman or Al Bladez (showing my guilty pleasures here), I notice that it is apparently the property owners that are responsible for maintenance of the sidewalks. Where I live, that's done by the city/municipality instead.

I wonder if this has anything to do with a negative sentiment around sidewalks. If you're not planning to use a sidewalk, but suddenly are required to maintain it, I can imagine you'd not be very happy.

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Open post
Guus der Kinderen @guusdk@toot.igniterealtime.org
· 7mo ago

@JeanMarcvanTol@mastodon.nl meh.

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Open post
Guus der Kinderen @guusdk@toot.igniterealtime.org
· 7mo ago

@botteaap@androiddev.social I'll start working on the eulogy.

"Let us gather today to remember a brave soul, gone too soon. Not by fate, but by skipping the 'Read Before Ride' section. He lived fast, scrolled past instructions, and now serves as a cautionary tale. May his memory be laminated and posted near the warning sign."

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Open post
Guus der Kinderen @guusdk@toot.igniterealtime.org
· 7mo ago

@Marloezovic@mastodon.nl Op naar de ijssalon! Aanbod blijft staan als je ooit toch nieuwsgierig bent.

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