topic Registered
Verified 2026-09-19 · registry updated
2022-06-09HTTP registry: u
The urgency of an HTTP response.
Priority values are scheduling hints that do not change HTTP correctness. u is registered in HTTP Priority. Defining reference: RFC9218, Section 4.1.
httpregistryhttp-priorityhttp-priority-names
Identifier (http)
u
The urgency of an HTTP response.
Treat priority as advisory, cap resource use, and never use it for authorization or guaranteed ordering.
This registry value is currently marked active by IANA. Follow the defining specification before sending, accepting, or proxying it.
IANA registry: http-priority/http-priority-names
Registry reference: RFC9218, Section 4.1