Working with the message header

This topic describes how to add function to a preexisting mediation handler to operate on the message header.

Before you begin

Before you start this task, you should have created the basic mediation handler in an EJB project (see Writing a mediation handler. It will be useful to have understood the elements of the task Working with the message payload, because some of those elements are used in this task

About this task

There are different types of field that you can set in message headers. Importantly, you can set the forward and return routing addresses for messages after they have been mediated at the current destination. In addition there are other fields that you can set, such as priority and reliability for the message and its reply, and the remaining time before the message (or the reply) expires.

Procedure

  1. To set routing addresses in the message header, see Setting routing addresses in a message header.
  2. To set all other fields in the message header, see Working with non-routing path fields in a message header.



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Last updated: Aug 29, 2010 5:25:00 PM CDT
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