IANA Registry for Interactive Connectivity Establishment (ICE) Options
obsoleted by
- rfc-8839 — Session Description Protocol (SDP) Offer/Answer Procedures for Interactive Connectivity Establishment (ICE)
updates
- rfc-5245 — Interactive Connectivity Establishment (ICE): A Protocol for Network Address Translator (NAT) Traversal for Offer/Answer Protocols
Extracted elements (6)
RFC 5245 defined ICE options for extensibility but omitted an IANA registry. This document creates the missing registry, triggered by a new ICE option being developed for ECN for RTP, which required a registration mechanism to ensure non-conflicting identifiers.
A registration request for an ICE option MUST include: the ICE option identifier, contact person name/email/address, organization or individuals with change control, short description of the ICE extension, and references to the specification.
An ICE option identifier MUST fulfill the ABNF syntax for 'ice-option-tag' as specified in RFC 5245: 'ice-option-tag = 1*ice-char' where 'ice-char = ALPHA / DIGIT / "+" / "/"'.
ICE options are RECOMMENDED to be no longer than 20 characters to reduce message sizes and allow for efficient parsing, even though the syntax permits unlimited length.
Creates the 'Interactive Connectivity Establishment (ICE) Options' IANA registry for ICE option tokens used in SDP 'ice-options' attribute or other signalling parameters. Registration policy is Specification Required as defined in RFC 5226.
As this document solely defines an IANA registry for an already existing concept in RFC 5245, there are no new security considerations introduced.