SoftCreatR

Proof of Concept for Hetzner's "Heray" PoW Captcha

This is a proof of concept (PoC) for Hetzner's "Heray" Proof of Work (PoW) Captcha. Please note that this is neither functional nor the original code. It simply demonstrates how the system could work based on observed patterns and assumptions.

Overview

Hetzner's "Heray" PoW Captcha likely requires the client to solve a computational puzzle as a form of CAPTCHA, where a specific condition must be met for the challenge to be accepted. The solution involves generating a specific mainbytes value based on given uuid and hsum values.

Process

ljahier

const { mkdir, readdir, rename, stat } = require('fs/promises');

async function main() {
  try {
    await mkdir('./photos')
    console.debug('Photo directory successfully created');
  } catch (err) {
    console.debug('Photo directory already exist');
  }

aessing

#!/bin/bash
# =============================================================================
# Install Cloudlflare daemon (cloudflared) on Linux (Ubuntu) - DNS-over-HTTPS
# https://developers.cloudflare.com/1.1.1.1/dns-over-https/cloudflared-proxy/
# https://developers.cloudflare.com/argo-tunnel/downloads
# -----------------------------------------------------------------------------
# Developer.......: Andre Essing (https://www.andre-essing.de/)
#                                (https://github.com/aessing)
#                                (https://twitter.com/aessing)
#                                (https://www.linkedin.com/in/aessing/)

graninas

At the beginning of 2030, I found this essay in my archives. From what I know today, I think it was very insightful at the moment of writing. And I feel it should be published because it can teach us, Rust developers, how to prevent that sad story from happening again.

---

What killed Haskell, could kill Rust, too

What killed Haskell, could kill Rust, too. Why would I even mention Haskell in this context? Well, Haskell and Rust are deeply related. Not because Rust is Haskell without HKTs. (Some of you know what that means, and the rest of you will wonder for a very long time). Much of the style of Rust is similar in many ways to the style of Haskell. In some sense Rust is a reincarnation of Haskell, with a little bit of C-ish like syntax, a very small amount.

Is Haskell dead?

fnky

ANSI Escape Sequences

Standard escape codes are prefixed with Escape:

• Ctrl-Key: ^[
• Octal: \033
• Unicode: \u001b
• Hexadecimal: \x1B
• Decimal: 27

djspiewak

Thread Pools

Thread pools on the JVM should usually be divided into the following three categories:

1. CPU-bound
2. Blocking IO
3. Non-blocking IO polling

Each of these categories has a different optimal configuration and usage pattern.

nonbeing

Also see: https://gist.github.com/lemiorhan/8912188

Simple automated deployment using git hooks

Here are the simple steps needed to push your local git repository directly to a remote (e.g. prod) server over ssh. This is based on Digital Ocean's Tutorial.

Overview

You are developing in a working-directory on your local machine, let's say on the master branch. Usually people push code to a remote server like github.com or gitlab.com and pull or export it to a production server. Or you use GitHub's webhooks to send a POST request to a webserver to take appropriate actions such as cloning/checking out a branch on the remote (prod) server.

joepie91

Don't use VPN services.

No, seriously, don't. You're probably reading this because you've asked what VPN service to use, and this is the answer.

Note: The content in this post does not apply to using VPN for their intended purpose; that is, as a virtual private (internal) network. It only applies to using it as a glorified proxy, which is what every third-party "VPN provider" does.

• A Russian translation of this article can be found here, contributed by Timur Demin.
• A Turkish translation can be found here, contributed by agyild.
• There's also this article about VPN services, which is honestly better written (and has more cat pictures!) than my article.

def-

#include <SFML/Audio.h>
#include <SFML/Graphics.h>

int main()
{
    sfVideoMode mode = {800, 600, 32};
    sfRenderWindow* window;
    sfTexture* texture;
    sfSprite* sprite;
    sfFont* font;