HTTP/1.1 200 OK Date: Tue, 24 Nov 2009 03:49:00 GMT Server: Apache/2.2.6 (Fedora) Last-Modified: Thu, 06 Apr 1995 04:26:32 GMT ETag: "73cb8-40e-2d1c4e00" Accept-Ranges: bytes Content-Length: 1038 Connection: close Content-Type: text/html; charset=UTF-8

Server-to-client callbacks

Reasons PRO

More efficient than sessions for coarse-grained symmetric interaction.

Reasons CON

Requires stateful server.

Applications

Stock quote alarms.
MUDs.

Proposed Solutions

MOLTIP UIDs and R-HTTP - Chin Chee-Kai

Updated: Wed Apr 5 1995
Up to Enhanced communication model.
Home to Interactive Standards Home Page.

HyperNews Responses

1. Server Callbacks - to support Notification (Nigel Hutchison)