Reliable Messaging
A typical business process is composed of several diverse web services. These services are provided by several coordinating partners. During the execution of the business process, several documents are exchanged between the partners. The means of exchange used for these documents must be reliable. This section discusses the standards for achieving reliable messaging between the partners.
In any communication, delivering a message reliably is of utmost importance to ensure the proper integrity of the system. Delivery of messages is subject to several error conditions arising due to:
Network failures
Component failures
System failures
Under such unforeseen conditions, messages should still be reliably delivered. XML-based messages are usually exchanged between partners over HTTP. HTTP is a stateless protocol and is not reliable. While using HTTP, a message in split into several small packets during delivery. Such packets are numbered. The order in which these packets are received...
