Source note · SRTP and media encryption negotiation
RFC 8842 defines the media-level a=tls-id attribute. The offerer's and answerer's values together identify a DTLS association, and a new value is required for each new association.
Checked 2026-09-23
The pair of SDP "tls-id" attribute values (the attribute values of the offerer and the answerer) uniquely identifies the DTLS association or TLS connection. Every time an endpoint requests to establish a new DTLS association, the endpoint MUST generate a new local "tls-id" attribute value.
- Vendor
- IETF
- Product
- DTLS-SRTP with SDP
- Subsystem
- SDP attributes
- Deployment
- any
- Region
- not restricted
- Release range
- RFC 8842
- Checked
- 2026-09-23
Sources
- RFC 8842: Session Description Protocol (SDP) Offer/Answer Considerations for Datagram Transport Layer Security (DTLS) and Transport Layer Security (TLS) — IETF / RFC Editor · tier 1 standards and regulators · Section defining the 'tls-id' attribute, unverified section number
Cite this note
APA
WarmTransfer. (2026, September 23). SRTP and media encryption negotiation: source note srtp-media-security-rfc8842-tls-id. WarmTransfer. https://warmtransfer.net/knowledge/claims/srtp-media-security-rfc8842-tls-id
BibTeX
@misc{warmtransfer-claim-srtp-media-security-rfc8842-tls-id,
title = {SRTP and media encryption negotiation: source note srtp-media-security-rfc8842-tls-id},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/srtp-media-security-rfc8842-tls-id},
note = {Source note srtp-media-security-rfc8842-tls-id, checked 2026-09-23}
}