I-D ACTION:draft-wessels-icp-v2-03.txt

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       Title     : Internet Cache Protocol (ICP), version 2                
       Author(s) : D. Wessels, K. Claffy
       Filename  : draft-wessels-icp-v2-03.txt
       Pages     : 9
       Date      : 05/28/1997

This draft document describes version 2 of the Internet Cache Protocol 
(ICPv2) as currently implemented in two World-Wide Web proxy cache 
packages[3,5].  ICP is a lightweight message format used for communicating 
among Web caches.  ICP is used to exchange hints about the existence of 
URLs in neighbor caches.  Caches exchange ICP queries and replies to gather
information to use in selecting the most appropriate location from which to
retrieve an object.                                               

This document describes only the format and fields of ICP messages.  
A companion document (RFCXXXX, <draft-wessels-icp-v2-appl-01.txt>) 
describes the application of ICP to Web caches.  Several independent 
caching implementations now use ICP, and we consider it important to 
codify the existing practical uses of ICP for those trying to implement, 
deploy, and extend its use for their own purposes.                                     

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