Re: [syndication] Re: robots.txt and rss

["Mark Nottingham" <mnot@mnot.net>]

Would be interesting if people started using the Retry-After header with
503...


14.37 Retry-After

   The Retry-After response-header field can be used with a 503 (Service
   Unavailable) response to indicate how long the service is expected to
   be unavailable to the requesting client. This field MAY also be used
   with any 3xx (Redirection) response to indicate the minimum time the
   user-agent is asked wait before issuing the redirected request. The
   value of this field can be either an HTTP-date or an integer number
   of seconds (in decimal) after the time of the response.

       Retry-After  = "Retry-After" ":" ( HTTP-date | delta-seconds )

   Two examples of its use are

       Retry-After: Fri, 31 Dec 1999 23:59:59 GMT
       Retry-After: 120

   In the latter example, the delay is 2 minutes.




----- Original Message -----
From: "Bill Kearney" <wkearney99@hotmail.com>
To: <syndication@yahoogroups.com>
Sent: Friday, November 08, 2002 1:03 PM
Subject: Re: [syndication] Re: robots.txt and rss


> > sometimes the authors notice if you start handing them 403 responses,
> > sometimes not. from yesterday, these hosts got 403 responses from my
> > feeds:
> >
> >   48 cassium.procopia.com
> >   47 csociety.ecn.purdue.edu
> >   72 usersweb1.go-concepts.com
> >   20 wwwcache2-ext.lancs.ac.uk
> >   40 wwwcache3-ext.lancs.ac.uk
>
> Then how about setting up a sticky trap that opens a session that stays
open?
> Or sending them a godzilla-gram of megabytes of pseudo-random XML data?
Havng
> them run out of diskspace or crashing the script is certainly one way to
get
> their attention.
>
> This is precisely the sort of reason I've suggested not using HTTP
errors alone
> in handling feeds going offline or moving to a new location.  Something
that
> indicates, in the feed, that it's being moved to a new URL would be one
way for
> anything reading the feed to understand where to go instead.
>
> But yes, supporting genuine HTTP error codes IS important.
>
> -Bill Kearney
>
>
>
>
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