A library to send and receive AS4 messages. Licensed under the Apache 2 License!

It consists of the following sub-projects:

• ph-as4-lib - basic data structures for AS4 handling
• ph-as4-esens - AS4 profile for eSENS as well as the PMode and the respective validation
• ph-as4-servlet - AS4 servlet for integration into existing (since 0.6.0)
• ph-as4-server-webapp-demo - AS4 servlet based server component to be integrated into an existing server

• v0.7.0 - work in progress
  • Added HTTP retry for client
  • Added server duplicate message detection for incoming messages
  • MessageInfo/Timestamp uses UTC - thanks Sander
  • Started two-way handling
  • Fixed bug that Receipt is not signed (if desired)
  • To be on the safe side, delete all previously created as4-*.xml files as there were incompatible changes.
• v0.6.0 - 2017-01-26
  • Extracted subproject ph-as4-servlet with only the AS4Servlet
  • Unified the namespaces across the subprojects
  • Requires ph-web 8.7.2 or higher
  • Renamed ph-as4-server to ph-as4-server-webapp-demo
• v0.5.0 - 2017-01-18
  • Initial release
  • Has everything needs for sending and receiving using the eSENS P-Mode profiles
  • Basic compatibility with Holodeck 2.1.2 is provided
  • Supports signed messages
  • Supports encrypted messages
  • Supports compressed messages
  • Targets to be easily integrateable into existing solutions
  • Requires Java 8 for building and execution

The configuration of ph-as4 is based on 2 different files:

• crypto.properties - the WSS4J configuration file - https://ws.apache.org/wss4j/config.html
• as4.properties - ph-as4-server specific configuration file

Use the following file as a template and fill in your key structure:

org.apache.wss4j.crypto.provider=org.apache.wss4j.common.crypto.Merlin
org.apache.wss4j.crypto.merlin.keystore.file=keys/dummy-pw-test.jks
org.apache.wss4j.crypto.merlin.keystore.password=test
org.apache.wss4j.crypto.merlin.keystore.type=jks
org.apache.wss4j.crypto.merlin.keystore.alias=ph-as4
org.apache.wss4j.crypto.merlin.keystore.private.password=test

The file is a classpath relative path like keys/dummy-pw-test.jks.

PEPPOL users: the key store must contain the AccessPoint private key and the truststore must contain the PEPPOL truststore.

This AS4 server specific file contains the following properties:

server.debug=true
server.production=false
server.nostartupinfo=true
server.datapath=/var/www/as4/data

server.proxy.enabled=false
server.proxy.address=10.0.0.1
server.proxy.port=8080

Per now the following known limitations exist:

• Only one-way communication is supported - of course ErrorMessages and Receipts are sent.
• Multi-hop does not work (and is imho not relevant for a usage in PEPPOL)
• Pull requests are currently not supported (not relevant in E-SENS profile)

• This is a library and not a product
• ph-as4 is licensed under the business friendly Apache 2 license and not under GPL/LGPL
• This library only takes care about the effective receiving of documents, but does not provide a storage for them. You need to implement your own incoming document handler!
• ph-as4 does not use an existing WS-Stack like Axis or Apache CXF but instead operates directly on a Servlet layer for retrieval and using Apache HttpClient for sending

Any voluntary help on this project is welcome. If you want to write documentation or test the solution - I'm glad for every help. Just write me an email - see pom.xml for my email address - or tweet me @philiphelger

My personal Coding Styleguide | On Twitter: @philiphelger