I talk about software and more. Sometimes in English, bazen de Türkçe.
Update (2022-12-30): This doesn't work.
Disable “AirPlay Receiver” functionality from the “AirDrop & Handoff” pane in System Settings/Preferences. This will probably fix it.
If IPv4 and IFace MTU is 1500, the highest MTU you can get is 1476. Because:
Update (2026-04-25): A while ago CZ-NIC started hosting their own package repository, visit https://pkg.labs.nic.cz/doc/ for details. This means everything else on this blog post are outdated and invalid.
It looks like CZ-NIC abandoned their OpenSUSE Open Build Service repository (its still sitting at 2.0.8 while upstream is at 2.0.10 now).
So I decided to take this into my hands™️ and made my own Open Build Service Repository because why not.
At Trendyol, we use various technologies to handle traffic and Cloudflare is one of them.
To keep a low latency between our customers and our backends, we have to monitor if Cloudflare's Istanbul PoP has been rerouted or not.
And that brings us to cloudflarestatus.com.
Inspired by Kenneth Finnegan's awesome NTP server on a Raspberry Pi blog post, I wanted to build a StratumOne NTP server for my local network as well.
I just didn't know how, though.
I started to work at Trendyol, one of the largest e-commerce companies in Turkey, at March 17th (2021) and it's...
...so bizzare to me still.
Update (2026-04-25): The API in this blog post ceased existing a long time ago. This means everything else on this blog post are outdated and invalid.
Endpoint: https://pttws.ptt.gov.tr/cepptt/mssnvrPttaceaemaa/gonderitakipvepostakod/gonderisorguYurticiveYurtDisi
Request Method: GET
Needed:
Warning: This method requires to have the paid version of Google Workspace. And you probably shouldn't have other users in your Google Workspace while using this.
tl;dr Unobfuscated Compiled Java APIs = Jackpot
Now that Ave wrote about TCKK, its time to talk about my side of things.
I was able to sniff out my TCKK certificate back in 2017 but haven't gotten much deeper ever since.