On Fri, Nov 21, 2008 at 3:53 PM, Adam Roach <[EMAIL PROTECTED]> wrote:
> I understand the difficulty in putting new HTTP headers into responses under > such circumstances... but I also don't understand how you'll provide > notification of changes under such circumstances either. Do you envision > that people publishing via a CDN or a blog will turn around and manually > kick a SIP server to cause it to send notifications? probably not manually (i.e by clicking a button), but through an event triggered causing a HTTP POST by the application or some other event to the SIP monitoring server, which then does it's thing and notify everyone monitoring it. > The issue I'm having is that it seems a bit contrived that anyone publishing > under the relatively constrained circumstances you describe will nonetheless > have access to a SIP events server that provides notification for such > changes -- but that could just be a lack of imagination on my part. Can you > expand your use-case to tell a story about where these people are getting > their SIP event servers (are they hosted?) and how the SIP event server > finds out about changes to the HTTP server. sure - a SIP service provider who provide a scalable monitoring service. for a user to use it, they embed a <link rel="monitor"/> tag with the correct SIP URI for this document into the HTML (similar to how you include google's urchin for analytics), then push the document into a CDN. The SIP monitoring server can then either be informed via a simple API call (HTTP POST, perhaps) provided by whatever application is pushing the document into the CDN, or the service provider monitor the document regularly (using ETag semantics), and when it finds a change notify all the watchers. a domain specific app - for example windows live writer - could add support for allowing monitoring without whoever is hosting the resources itself supporting custom headers and having a co-hosted SIP server. ~ Theo -- Theo Zourzouvillys Chief Technical Officer VoIP.co.uk - Commerce House, Telford Road, Bicester, OX26 4LD Tel: +44 1908 764 196 _______________________________________________ BLISS mailing list [email protected] https://www.ietf.org/mailman/listinfo/bliss
