Within Apache Axis2, Jakarta Commons HTTPClient is used to send messages with HTTP and HTTPS. HTTPClient uses JSSE (Java Secure Socket Extension) to provide the https functionality. Since JSSE is part of Java 1.4 (and in later versions) there is no special configuration required for this to work.

But in some situations the default socket factory implementation is not enough. So some users might want to provide their own socket factory implementation to work with SSL. In that case Axis2 can accept a socket factory from the user so that it will be used to send that message. Let's see how this can be done.

Apache Axis2 has excellent support for sending and receiving binary payloads with SOAP using several standard mechanisms such as Base64 encoded binary, SOAP Message Transmission Optimization Mechanism (MTOM), and SOAP with Attachments (SwA). This article by Thilina Gunarathne will walk you through the SwA support in Apache Axis2.

This article by Saminda Abeyruwan provides the concepts, semantics, and an inside view of the WSO2 Admin UI Framework. The Admin UI Framework consists of a UI Processor and a Javascript/AJAX library. The UI Processor is used to generate pages, and the Javascript/AJAX library is used to communicate with the servers using Web services standards. The WSO2 Admin UI framework is used in the WSO2 Web Services Application Server, WSO2 Enterprise Service Bus, and WSO2 Mashup Server.

This article by Samisa Abeysinghe explains the SOAP extension that can be useful in providing and consuming Web services using PHP. He details the classes of extension, two implementation models of Web services, and also lists a 'Hello World with SOAP Extension'.