Posts

Code One - Day Three

Last updated

Third day on Code One already! Highlights for today: the Community Keynote, a trip to GitHub and a session called “Sarcasm as a Service”.

Read more... →

Code One - Day Two

Last updated

On this second day at Code One I have again visited interesting sessions. One on security by Jim Manicode and one on cash (or the lack thereof) in Sweden.

Read more... →

Code One - Day One

Last updated

This year I’m returning to Oracle Code One (formerly JavaOne) for the third time. I’m planning to write some notes on interesting sessions or other content.

Read more... →

How did I get that library?!

Last updated

When you’re writing Java applications, chances are you’re using Maven for dependency management. It lets you declare the artifacts you need to build your application. Those artifacts also depend on other artifacts. This means you have transitive dependencies - dependencies you didn’t declare yourself but you need them anyway.

Read more... →

Reports from Devoxx PL

Last updated
From yesterday until tomorrow I’m attending Devoxx Poland (or Devoxx PL for short). It’s the second largest conference in the Devoxx family with around 2700 people attending. The conference is held in the ICE Kraków Congress Centre, a large venue with an amazing primary room. Entrance of the ICE The main reason I’m here is to give a talk about GraalVM on Wednesday morning. Apart from that, it’s a nice opportunity to network, meet old friends and make new ones. — Read more... →

Securing Apache HTTPD with Microsoft Active Directory

Last updated

Recently, I was building a website with documentation for one of the projects I’m involved with. I wanted to protect access to that website to a specific set of people inside my company. Here’s how I did it.

Read more... →

Troubleshooting SOAP and MTOM using the command line

Last updated
When you want to transmit binary files over SOAP-based webservices, you have two choices: Base64 or Message Transmission Optimization Mechanism (MTOM). The latter is much more efficient, but also harder to troubleshoot if it doesn’t work at once. Both options have their own typical scenario Serialise the file content using Base64 and include the result right into the XML structure. This is relatevely easy to implement and troubleshoot. It usually works well for small binary files, but as files grow larger, you may run into performance issues. — Read more... →

How does BEAST work?

Last updated
Last month, I did a talk at GOTO Berlin where I explained the basics of Transport Layer Security. During the talk, the audience asked a few questions through the app. One of them was: “How does Beast work?” and I wasn’t able to answer that one on stage, unfortunately. Since it’s an interesting question, I’ll answer it here. Unfortunately, understanding BEAST is a bit harder than the talk itself… BEAST stands for Browser Exploit Against SSL/TLS. — Read more... →

A first look at MVC 1.0

Last updated
Recently, Twitter brought the renaming of Ozark to Krazo to my attention. It pulled my attention: I had never heard of either projects, and I wondered what they would be about. Ozark (or Krazo) will be the Reference Implementation of the new Model-View-Controller Specification. This MVC specification, also known as JSR 371, was planned for inclusion in Java EE 8, but eventually dropped. Apparently, this didn’t kill the effort. I was curious to see where the specification (and it’s implementation) would be now. — Read more... →

Custom SOAP Faults using Spring WS

Last updated
There are many situations when you need to write a SOAP-based webservice. Maybe you are writing a test dummy, or maybe you got the interface from some kind of architect. (Yes, there are other reasons, too.) And chances are you’ll be using Spring-WS to do this. Recently I was doing that, and I found the following inside the interface definition (WSDL): <element name="faultMessage" type="common:FaultMessage"/> <message name="faultMessage"> <part name="faultMessage" element="tns:faultMessage"/> </message> <portType name="someName"> <operation name="searchOrder"> <input message="tns:searchOrderRequest"/> <output message="tns:searchOrderResponse"/> <fault name="faultMessage" message="tns:faultMessage"/> </operation> </portType> That was a rather challenging thing! — Read more... →