field Registered
Verified 2026-09-18 · registry updated
2026-08-28Priority
Hints at the urgency and incremental delivery preference of a request.
Priority is a scheduling hint. It can improve resource delivery but must not be used for correctness or access control.
httpheaderperformancehttp2http3
Reference (http)
Priority: u=1, i
Priority is a scheduling hint. It can improve resource delivery but must not be used for correctness or access control.
Common mistakes
- Assuming priority guarantees network order or overrides server resource limits.
IANA registry: http-fields/field-names · structured type: Dictionary
Registry reference: RFC 9218: Extensible Prioritization Scheme for HTTP