METHOD AND SYSTEM FOR EXTERNALIZING HTTP SECURITY MESSAGE HANDLING WITH MACRO SUPPORT

A method for externalizing message handling within a data processing system is presented. A request (412) to access a resource (406) is received at a first server (404) from a client (402). In response to determining at the first server that processing of the request requires a message to be sent to the client, a redirect message (416) is generated that contains an operation code that corresponds to message handling functionality at a second server (418) for the message to be sent to the client. A configurable macro is evaluated to determine an evaluated macro, and the evaluated macro is inserted into the redirect message. The redirect message is then sent from the first server to the second server via the client. The second server extracts the operation code from the redirect message and invokes the message handling functionality that corresponds to the extracted operation code. The second server extracts the evaluated macro from the redirect message and employs the evaluated macro at the second server as an input parameter for the message handling functionality.