Linux Today: Linux News On Internet Time.

ISP-Planet: Pending Protocol Promises ISP Revenue Opportunities

Mar 29, 2000, 19:59 (1 Talkback[s])
(Other stories by Lisa Phifer)

"On-board content filtering services can be added to most caches today. Wireless network proxies transform both protocol and web content, converting HTML into WML for small-screen display and HTTP into WDP for wireless delivery. Some proxy firewalls use a content vector protocol to forward HTML to a scan server which detects and strips viruses."

"But these point solutions lack a unifying architecture and single, simple protocol that enables efficient distributed processing for any web service needing content adaptation. Complex, narrowly-defined, or proprietary vector protocols don't facilitate rapid deployment of new services. Monolithic servers that host embedded services don't scale well — in most cases, it makes good sense to offload adaptation. According to Taylor, "Edge delivery devices have traditionally been best-of-breed appliances designed to move bits quickly, not to make application decisions. With iCAP, edge devices can interface with gateways that are designed to make application decisions.""

"iCAP is an HTTP-based "remote procedure call" protocol that allows an edge device like a cache to forward HTTP messages to an application server for transformation or other processing. There are three ways in which iCAP can work. Request Modification... Request Satisfaction... Response Modification..."

Complete Story