Technical Details

A client interacts with APS Catalog by issuing HTTP GET/POST requests, and retrieving HTTP packets with status codes and APS Catalog resources. A resource can be a binary file (for example, a package) or an XML-based message. Each XML message conforms to one of the following formats:

Atom feed [RFC 4287] with the following extensions:
- OpenSearch 1.1
- Feed paging [RFC 5005]
- Native APS Catalog extensions describing APS package metadata
XHTML format that describes APS catalog structure.
Native XML-based format that describes APS catalog structure. For details, refer to the APS Catalog Resources section further in this guide.