Chapter 3: Theory Of Operation; Xml Operations - HP P4518A - Traffic Management Server Sa7150 User Manual

Theory of Operation
This chapter discusses the general operating principles for the HP e-
Commerce/XML Server Accelerator SA7150. For details about the
SA7150 command set, please see Chapter 5. For information about
completing typical, specific tasks, please see Chapter 4.

XML Operations

The HP e-Commerce/XML Server Accelerator SA7150 provides a
powerful means of using XML technology to facilitate Business-to-
Business transactions. In addition to its XML capability, the SA7150
provides SSL acceleration (discussed later in this chapter).
The SA7150 employs user-created rules to evaluate the content
transmitted in XML documents and to distribute this information
among the appropriate data center resources. XML functionality is
enabled or disabled for each user-specified "map" (i.e., a triad
consisting of an IP address, network port, and server port.)
XML functionality is controlled by way of the Command Line
Interface (CLI—detailed in Chapter 5). The SA7150 manages XML
traffic using "XML patterns," pairs of "URI expressions" and "XML
expressions." URI expressions serve as "coarse" filters, allowing the
system to determine whether a HTTP POST request is targeted at an
XML-enabled server—if no URI match is found, the SA7150 doesn't