Collection of Oxalis-AS4 extensions: unsigned errors support, force BC provider, multiple Oxalis on the same Tomcat, single Oxalis Server with multiple serving certificates

[dladlk]

A little collection of last year small projects - AS IS:

• oxalis-as4-unsigned-error - Oxalis extension to support unsigned SignalMessage Error responses and pass as exception with description
• oxalis-bc-preferred-provider - Tiny Guice Module to run Security.insertProviderAt(new BouncyCastleProvider(), 1) without changing source code of Oxalis (NOT NEEDED ON JAVA 21, mostly Java 8 which does not have jdk.security.provider.preferred java.security property)
• oxalis-nemhandel-tomcat-multiple-instances - Analysis of possibilities to run multiple instances of Nemhandel eDelivery Oxalis on the same Tomcat (via extracting 5 CXF interfaces to shared lib of Tomcat)
• oxalis-as4-inbound-multi-cert - A POC Module to replace As4InboundModule with multiple endpoints on different certificates on the same instance of Oxalis-AS4

Disclaimer: published mostly for inspiration, none of them is used in full production yet, although oxalis-nemhandel-tomcat-multiple-instances is passing this week production grade integration.