RE: Asynchronous updates/notifications

> From: kugler@us.ibm.com

> For some long-running operations, it would be nice if a server
> could send asynchronous notifications to a client, so the client
> doesn't have to poll (or refresh periodically) to get progress
> updates.  I'm wondering if something similar to the 100-Continue
> mechanism could be used for this.

You can do this now by sending a single response with a multipart/replace
body.  All it costs is keeping a connection open.  The more general need is
for notifications that do not require an open connection, but that is a
different story.