Open Proxy Extended Services Architecture BOF (opes) Tuesday, December 12 at 1415-1515 ================================= CHAIRS: Hilarie Orman Michael Condry DESCRIPTION: The Open Proxy Extended Services Architecture (OPES) enables construction of services "inside the network"; these can be used by content providers for efficient caching, content administration, communication, and network control functions. Other users of the services include third-party content-related services such as transcoders, regional affiliates, etc. The open proxy extensible services architecture focuses on situations with intermediate network elements providing the locus of control and execution of the service function. The proxy services are content directed: thus, the proxy understands at least some of the content semantics and provides a service platform that operates within the content flow. For example, it provides an opportunity to instruct the cache that certain types of data are cacheable. The OPES WG will work with WEBI/WREC group to define or follow specifications for communication between the web cache sub-system and proxies to take advantage of this information in creating a strategy for caching and proxying that is more efficient than being "content ignorant". The OPES WG will develop protocols for the proxy server to provide "callout" services (e.g. iCAP, the content adaptation protocol) and provide a forum for iCAP to submit and discuss its specifications. The callout server may create copies of web pages, possibly in a different form, e.g. a different natural language. Open Proxy protocols will have the ability to communicate cache and proxy specific information with surrogates and/or origin servers, for example, in order to inform the origin that it has two representa- tions of the same content. There are points of interoperation required with Content Distribution Networks, for example, in exchanging accounting related information. Content Distribution Networks are the primary subject of the CDNP group. After the initial protocols have been specified, the open proxy extensible services group also will develop protocols to facilitate routing traffic within cache system (specified by WEBI/WREC) along alternate paths to minimize time or cost. Goals and Milestones: Feb 01: Requirements and roadmap documents for WG Feb 01: First draft callout protocol; first draft information model Mar 01: Meet at Minneapolis IETF Mar 01: Update of OPES architecture document, draft-tomlinson-epsfw-00.txt. Jun 01: Submission of security and authentication architecture Aug 01: Meet at London IETF Aug 01: Final submission of callout protocol; final submission of information model Oct 01: Submission of data model for service description, invocation, results Dec 01: Salt Lake City IETF, final submission of architecture document AGENDA: Introduction: Hilarie Orman 5 min Charter Bashing: Michael Condry and Hilarie Orman 10 min Use Cases: Marcus Hofmann 10 min ICAP Progress: Don Gillies and Mark Nottingham 10 min Relationship to CDN Peering: Mark Day 5 min Workshop Summary: Michael Condry 5 min Rule Systems: Andre Beck 5 mins Document Roadmap: Hilarie Orman 7 min If time allows: Discussion of other documents Assignments and Administrivia 2 min