Re: htcp & icp

On Thu, 16 Sep 1999, Dancer wrote:

> "R. Harsiandy I" wrote:
> >
> > But, what is exactly htcp port?
>
> ICP over TCP rather than ICP over UDP.

I hope no HTCP fan have heard you! AFAIK, HTCP operates on top of UDP
and is simply ICP with more information stuffed into the packet:

http://www.vix.com/ietf/htcp.txt

   1.2. ICP (see [RFC2186]) permits caches to be queried as to their
   content, usually by other caches who are hoping to avoid an expensive
   fetch from a distant origin server. ICP was designed with HTTP/0.9 in
   mind, such that only the URI (without any headers) is used when
   describing cached content, and the possibility of multiple compatible
   bodies for the same URI had not yet been imagined.

   1.3. This document specifies a Hyper Text Caching Protocol (HTCP or
   simply HoT CraP) which permits full request and response headers to be
   used in cache management, and expands the domain of cache management to
   include monitoring a remote cache's additions and deletions, requesting
   immediate deletions, and sending hints about web objects such as the
   third party locations of cacheable objects or the measured
   uncacheability or unavailability of web objects.

HTH,

Alex.
Received on Wed Sep 15 1999 - 18:33:51 MDT