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[JRE] How to extend the list of trusted CAs in the Java Runtime Environment

or: How to resolve 'SunCertPathBuilderException: unable to find valid certification path to requested target'

Above exception is thrown when you try to open a HTTPS connection to a website whose certificate is not signed by a trusted certificate authority (CA).

What you should do:

Download/Export the CA certificate for the desired website (not the certificate of the website itself).
Open up an administrator shell.
Type the following:

There is also an Ansible playbook that uses docker-compose: https://github.com/cfra/jitsi-playbook

Installation

Steps to get Jitsi up and running.

Install jitsi

(taken from https://jitsi.org/downloads/)

You can use our Ubuntu/Debian repository:

	// ==UserScript==
	// @name Google Play QR Code
	// @namespace Google Play
	// @description Show a QR code in order to easily open up the same page on your mobile device.
	// @include https://play.google.com/store/apps/details?id=*
	// ==/UserScript==
	(function() {
	findxpath = function(root, xpath) {
	return document.evaluate(xpath, root, null, XPathResult.UNORDERED_NODE_SNAPSHOT_TYPE, null);
	}

	from lxml import etree
	from time import *
	import base64

	TIME_FORMAT = '%d.%m.%y %H:%M'

	FILENAME = 'XMLCard.xml'

	f = open(FILENAME)
	a = etree.parse(f)

	import sys
	import os
	import string

	PREFIX = '.tex'

	def main(args):
	try:
	main_document = args[1] # [1] might be machine-specific
	print main_document, '\n'

	# Load libraries
	import re
	import time
	import operator

	import numpy as np
	from sklearn.feature_extraction.text import TfidfVectorizer, CountVectorizer
	from scipy.sparse import csr_matrix
	import pandas as pd