Book Image

Apache Axis2 Web Services, 2nd Edition

By : Deepal Jayasinghe, Afkham Azeez
Book Image

Apache Axis2 Web Services, 2nd Edition

By: Deepal Jayasinghe, Afkham Azeez

Overview of this book

<p>Web services are gaining popularity and have become one of the major techniques for application integration. Due to the flexibility and advantages of using web services, you want to enable Web service support to your applications. This book is your gateway to learning all you need to know about the Apache Axis2 web service framework and its hands on implementation. <br /><br />Apache Axis2 Web Services, 2nd Edition is your comprehensive guide to implementing this incredibly powerful framework in practice. It gives you precisely what you need to know to develop a detailed practical understanding of this popular, modular and reliable web service framework.<br /><br />This book starts with a short and relevant introduction about the Axis2 1.5 framework and then plunges you straight into its architectural model.</p> <p>Learn to use and develop your own modules. Write a services.xml file so efficiently that you'll be creating more complex applications (rather than just POJOs) in no time.</p> <p>Learn how straightforward it really is to turn a Java class into a web service in Axis2. Experiment with different types of sessions in Axis2. Learn different patterns of Enterprise deployment. Ensure reliability in your web service - a major concern in most enterprise applications - with minimum impact on performance.<br /><br />This book will journey you through all this and more, giving you exactly what you need to learn Axis2 1.5 in the easiest way possible and create secure, reliable, and easy-to-use web services efficiently and systematically.</p>
Table of Contents (22 chapters)
Apache Axis2 Web Services
Credits
About the Authors
About the Reviewers
www.PacktPub.com
Preface
15
Building a Secure Reliable Web Service
Index

Protocol bridging


Protocol bridging refers to the request coming on one transport protocol, and being sent in for processing on a different protocol. For example, the corporate policy may dictate that all incoming traffic should be on HTTPS. Some web services may exist that are exposed only via a transport such as JMX. In such a case, there should be a way of bridging from HTTPS to JMX. Furthermore, the backend web services, which may be deployed on Axis2, may be highly secured within a High Security Zone (HSZ ), and the policies may dictate that only certain calls from the Demilitarized Zone (DMZ) can be made to those web services. We may also implement message validation and request throttling outside the highly secured LAN. This scenario is shown in the following figure. External web service clients talk to the endpoints on the ESB in the DMZ. This ESB will run validations and other Qualities of Service (QoS) functionality on these incoming messages, and if those messages meet the requirements...