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WebSockets - An Introduction

WebSockets is a modern HTML5 standard which makes communication between client and server a lot more simpler than ever. We are all familiar with the technology of sockets. Sockets have been fundamental to network communication for a long time but usually the communication over the browser has been restricted. The general restrictions

The server used to have a permanent listener while the client (aka browser) was not designated any fixed listener for a more long term connection. Hence, every communication was restricted to the client demanding and the server responding.
This meant that unless the client requested for a particular resource, the server was unable to push such a resource to the client.
This was detrimental since the client is then forced to check with the server at regular intervals. This meant a lot of libraries focused on optimizing asynchronous calls and identifying the response of asynchronous calls. Notably t

Cold Storage Group Ordering

Cold Storage is a popular supermarket chain in Singapore. As part of an employee benefit, Glints employees located in Singapore are given a fixed weekly office budget to purchase groceries to fill the office pantry. Unfortunately, the Cold Storage website does not have a group ordering function, which makes collating the list of items to buy a hassle.

To solve this problem, you proposed creating a service that everyone in the

Security Advisories / Bulletins / vendors Responses linked to Log4Shell (CVE-2021-44228)

Errors, typos, something to say ?

If you want to add a link, comment or send it to me
Feel free to report any mistake directly below in the comment or in DM on Twitter @SwitHak

Other great resources

Royce Williams list sorted by vendors responses Royce List
Very detailed list NCSC-NL
The list maintained by U.S. Cybersecurity and Infrastructure Security Agency: CISA List

Mass Importing Emojis from Slack to Larksuite

Prerequisite:

Export all the emojies from Slack using this tool - https://emojibox.app/
Convert all the exported emojies to the format accepted in Lark, i.e. 96x96, <100KB, png format, using this tool - https://redketchup.io/bulk-image-resizer

Note the path where all the converted emojies are located.

	#!/usr/bin/env bash

	# Install globally using https://coderwall.com/p/jp7d5q/create-a-global-git-commit-hook
	# The checks are simple and can give false positives. Amend the hook in the specific repository.

	if git rev-parse --verify HEAD >/dev/null 2>&1
	then
	against=HEAD
	else
	# Initial commit: diff against an empty tree object