RFC 5438

Instant Message Disposition Notification (IMDN), February 2009

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E. Burger
H. Khartabil
simple (rai)

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DOI:  https://doi.org/10.17487/RFC5438

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Instant Messaging (IM) refers to the transfer of messages between users in real-time. This document provides a mechanism whereby endpoints can request Instant Message Disposition Notifications (IMDN), including delivery, processing, and display notifications, for page-mode instant messages.

The Common Presence and Instant Messaging (CPIM) data format specified in RFC 3862 is extended with new header fields that enable endpoints to request IMDNs. A new message format is also defined to convey IMDNs.

This document also describes how SIP entities behave using this extension. [STANDARDS-TRACK]

For the definition of Status, see RFC 2026.

For the definition of Stream, see RFC 8729.

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