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If-Match

Summary

Makes the request conditional on the server’s resource being a certain ETag (revision and representation).

Overview table

Direction
Request

Features
:

Syntax

If-Match = "*" / 1#entity-tag

Examples

If-Match: "xyzzy"
If-Match: "xyzzy", "r2d2xxxx", "c3piozzzz"
If-Match: *

Related specifications

RFC7232: HTTP/1.1 Conditional Requests
: