Tai Kedzierski taikedz

Converterd to an articla: https://dev.to/taikedz/considering-syncthing-at-work-3pin

An interim solution for passing around large files using decentralised means

Syncthing uses end-to-end encryption to send files directly to other devices. If two devices are on the same network, the instances communicate directly with eachother. If not, they send traffic, encrypted, via a relay server (akin to a router).

This solution can be useful for sending large files between workstations, when other means are unavailable.

Security considerations

UDP test

(Note: taken further in a proper repo: https://github.com/taikedz/udp_test)

This is a quick thing I put together for testing UDP packet sending behaviours.

Interestingly, if a message is delayed by the server and sent after the client times out, the message is still received client side. An actual client would need to proactively manage response validity.

I did try randomly generating multiple identical repsonses from the server, that only caused confusion for this simple client.

VS Code Settings Adjustments

Plugins to install

pylance
git lens

Switch between the terminal and editor

Open the preferences via Ctrl Shift P

Generic setup.py

Specifically aimed at re-use

	#!/usr/bin/env bash

	QUOTED_ARRAY="-Djava=\"one 'and' two\" -Djavax=\"three four\""
	while IFS= read -r -d '' item; do echo "$item"; done < <(xargs printf '%s\0' <<< "$QUOTED_ARRAY")

	# Output:

	# -Djava=one 'and' two
	# -Djavax=three four

	# (C) Tai Kedzierski
	# LGPLv3

	from collections import OrderedDict
	from typing import Any, Union, List


	class DataTable(list):
	def __init__(self, data:List[List[Any]]):
	""" Builds a table, after popping the first line which provides headers

	#!/usr/bin/env bbrun

	# Steps obtained from:
	# https://ubuntuhandbook.org/index.php/2021/10/anbox-run-android-apps-ubuntu/

	#%include std/out.sh
	#%include std/askuser.sh

	set -euo pipefail

	<!DOCTYPE html>
	<html><head>
	<style>
	python { display: none; }
	</style>
	<script src="https://cdn.jsdelivr.net/pyodide/v0.20.0/full/pyodide.js"></script>
	<script>
	// https://pyodide.org/en/stable/usage/quickstart.html
	pyscripts = document.getElementsByTagName("python");
	let pyodide = null

	# ... add this to your bashrc to turn off those pesky warnings when running Groovy
	# From https://github.com/apache/groovy/commit/a7f7cdd352a40dd7acd2def999eb560c2b76904e
	# Via https://dev.to/erichelgeson/removing-illegal-reflective-access-warnings-in-grails-4-393o

	_java_opens=(
	--add-opens=java.base/java.io=ALL-UNNAMED
	--add-opens=java.base/java.lang=ALL-UNNAMED
	--add-opens=java.base/java.lang.annotation=ALL-UNNAMED
	--add-opens=java.base/java.lang.invoke=ALL-UNNAMED
	--add-opens=java.base/java.lang.module=ALL-UNNAMED

	sudo sed -i "s\|Exec=\|Exec=env MOZ_USE_XINPUT2=1 \|g" /usr/share/applications/firefox.desktop
	xdg-desktop-menu forceupdate