lookup> ETag

ETag

provides the current entity-tag for the selected representation, as determined at the conclusion of handling the request.

表示头RFC7232#2.3
NameETag
Type表示头
SpecificationRFC7232#2.3

provides the current entity-tag for the selected representation, as determined at the conclusion of handling the request.

ETag: "33a64df5"

RFC7232#2.3

What does the ETag header do?

provides the current entity-tag for the selected representation, as determined at the conclusion of handling the request.

Is ETag a request or response header?

It is classified as a representation header and can appear in requests or responses depending on context.

Related status codes

Related headers