A Session Description Protocol Offer/Answer Mechanism to Enable File Transfer
RFC 5547, “A Session Description Protocol Offer/Answer Mechanism to Enable File Transfer”, is a Proposed Standard document published in May 2009 by M. Garcia-Martin, M. Isomaki, G. Camarillo, S. Loreto, P. Kyzivat. The canonical text is published by the RFC Editor.
Abstract
This document provides a mechanism to negotiate the transfer of one or more files between two endpoints by using the Session Description Protocol (SDP) offer/answer model specified in RFC 3264. SDP is extended to describe the attributes of the files to be transferred. The offerer can describe either the files it wants to send or the files it would like to receive. The answerer can either accept or reject the offer separately for each individual file. The transfer of one or more files is initiated after a successful negotiation. The Message Session Relay Protocol (MSRP) is defined as the default mechanism to actually carry the files between the endpoints. The conventions on how to use MSRP for file transfer are also provided in this document. [STANDARDS-TRACK]
What “Proposed Standard” means
An entry-level standards-track specification: stable, peer-reviewed and a solid basis for implementation, though it may still evolve before becoming an Internet Standard.
The canonical text of RFC 5547 is hosted at rfc-editor.org. Available in TXT,HTML.
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