Use #letsencrypt to generate a wildcard domain certificate

By | June 26, 2019
2 Comments

I am an old user of letsencrypt that just found out that my old way of renewing my set of certificated is no longer supported. When running the usual “certbot renew” command, that was manually renewing my certificates, resulted in the error: 2019-04-06 17:38:19,072:WARNING:certbot.renewal:Attempting to renew cert (blog.voina.org) from /etc/letsencrypt/renewal/blog.voina.org.conf produced an unexpected error: Client… Read More »

Convert text label files to UTF-8 encoding

By | March 28, 2019
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In a lot of multi-language enterprise applications where you have to support labels in different languages the text files with the different labels for each language are scattered across your source code. In my case I all the labels are kept in Java property files with “.properties” file extension. Then for each language I have… Read More »

Migrate from #Wildfly 10 + external #ActiveMQ to #Wildfly 13 + embedded #Artemis

By | March 27, 2019
4 Comments

As I mentioned in a previous post I am a long time user of WildFly 10 and now in the process of upgrading to WildFly 13. Yes, not the latest version because I have some legacy source code constraints that forces me to not consider yet WildFly 14 and up. WildFly 13 includes an Artemis… Read More »

#PSD2 #Fintech State of #APIs of banks and financial service entities active in #Romania

By | March 23, 2019
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Being someone that writes software used by banks around the world as a living, the PSD2 directive is something that was very exciting to me. The idea of being able to access banking data through open APIs not only through sometimes clunky and annoying web pages developed by some banks is something that is very… Read More »

Allow the use of a transacted session in a #Servlet with #JMS broker #Artemis

By | March 21, 2019
1 Comment

The open-source application server WildFly from which the RedHat owned JBoss application server is derived is one of the most used Java application server lately. This is caused by the strong market consolidation that is happening that caused the Java application server environment to become very restricted. Basically the only open-source enterprise grade Java application… Read More »

Fix #Firefox issues when load-balancing by disabling #DNS prefetching

By | March 17, 2019
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There is an annoying feature from Firefox I just found out is causing me huge problems. DNS Prefetching: This feature allows firefox to try to prefetch and cache DNS entries related to the sites you visit. Firefox attempts to speed up loading new websites by using DNS Prefetching, which can cause page load errors with… Read More »

What happens when #opensource #truecrypt #programmer got cheated by big business

By | March 16, 2019
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The first time I heard of this guy I was fascinated by him: Paul Le Roux . He is the suspected creator of TrueCrypt the open source software to encrypt your disk. If you never used TrueCrypt maybe you know and use its latest fork VeraCrypt. So, this guy started as an open source idealist… Read More »

#EasyRSA Certificate based authentication of #SoapUI client to a secure WebService running on #JBoss or #WildFly application server

By | May 12, 2019
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The following is a very quick guide on how to set up a EasyRSA certificate based authentication of SoapUI API client to connect to a WebService based API that runs on JBoss or WildFly. Generate a local CA with EasyRSA Download and install easy-rsa – https://github.com/OpenVPN/easy-rsa Go to the installation folder and change the following… Read More »

Migrate legacy application using Oracle 10g to Oracle 12c

By | March 16, 2019
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After upgrading my developement Oracle database to 12c I discovered that an old legacy application still under support was no longer working throwing the following Oracle error: After some digging I found the following reported bug: Bug 14575666 In 12.1, the default value for the SQLNET.ALLOWED_LOGON_VERSION parameter has been updated to 11. This means that… Read More »

Create local users in #Oracle 12c

By | March 16, 2019
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One of the most annoying things is when some vendor decides that it is a good idea to change some very basic and long time existing basic behaviour. In the new Oracle 12c you are no longer able to create local users the old way as sys: If you try to execute the above the… Read More »