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Internet Engineering Task Force (ietf) Session Description Protocol (sdp) Capability Negotiation 4.2. Dtls-srtp or Srtp with Media-level Security Descriptions...58 4.3. Best-effort Srtp with Session-level Mikey and Media-level
| Content Provider | Semantic Scholar |
|---|---|
| Author | Andreasen, Flemming Page, Track |
| Copyright Year | 2010 |
| Abstract | The Session Description Protocol (SDP) was intended to describe multimedia sessions for the purposes of session announcement, session invitation, and other forms of multimedia session initiation. SDP was not intended to provide capability indication or capability negotiation; however, over the years, SDP has seen widespread adoption and as a result it has been gradually extended to provide limited support for these, notably in the form of the offer/answer model defined in RFC 3264. SDP does not define how to negotiate one or more alternative transport protocols (e.g., RTP profiles) or attributes. This makes it difficult to deploy new RTP profiles such as Secure RTP or RTP with RTCP-based feedback, negotiate use of different security keying mechanisms, etc. It also presents problems for some forms of media negotiation. The purpose of this document is to address these shortcomings by extending SDP with capability negotiation parameters and associated offer/answer procedures to use those parameters in a backwards compatible manner. The document defines a general SDP Capability Negotiation framework. It also specifies how to provide attributes and transport protocols as capabilities and negotiate them using the framework. Extensions for other types of capabilities (e.g., media types and media formats) may be provided in other documents. Information about the current status of this document, any errata, and how to provide feedback on it may be obtained at in effect on the date of publication of this document. Please review these documents carefully, as they describe your rights and restrictions with respect to this document. Code Components extracted from this document must include Simplified BSD License text as described in Section 4.e of the Trust Legal Provisions and are provided without warranty as described in the Simplified BSD License. This document may contain material from IETF Documents or IETF Contributions published or made publicly available before November 10, 2008. The person(s) controlling the copyright in some of this material may not have granted the IETF Trust the right to allow modifications of such material outside the IETF Standards Process. Without obtaining an adequate license from the person(s) controlling the copyright in such materials, this document may not be modified outside the IETF Standards Process, and derivative works of it may not be created outside the IETF Standards Process, except to format it for publication as an RFC or to translate it into languages other than English. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://ietfreport.isoc.org/rfc/PDF/rfc-pdf/rfc5939.pdf |
| Alternate Webpage(s) | http://info.internet.isi.edu/in-notes/pdfrfc/rfc5939.txt.pdf |
| Alternate Webpage(s) | http://ietfreport.isoc.org/rfc/PDF/rfc5939.pdf |
| Alternate Webpage(s) | http://mirror.cogentco.com/pub/rfc/pdf/rfc5939.txt.pdf |
| Alternate Webpage(s) | http://www.potaroo.net/ietf/rfc/PDF/rfc5939.pdf |
| Alternate Webpage(s) | http://www.rfc-editor.org/rfc/pdfrfc/rfc5939.txt.pdf |
| Alternate Webpage(s) | http://ietfreport.isoc.org/rfc/fyi/PDF/rfc-pdf/rfc5939.pdf |
| Alternate Webpage(s) | http://ietfreport.isoc.org/rfc/std/PDF/rfc-pdf/rfc5939.pdf |
| Alternate Webpage(s) | http://smakd.potaroo.net/ietf/rfc-pdf/rfc5939.pdf |
| Alternate Webpage(s) | http://ietfreport.isoc.org/rfc/PDF/rfc-pdf/rfc-pdf/rfc5939.pdf |
| Alternate Webpage(s) | http://www.rfc-editor.org/in-notes/pdfrfc/rfc5939.txt.pdf |
| Alternate Webpage(s) | https://www.potaroo.net/ietf/rfc/PDF/rfc5939.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
