Add support for HEAD operations #19520
Merged
+17
−3
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In support of beginning ACME support, we need to allow Vault plugins to respond to HEAD operations. See Section 6.5.1 and 7.2 for the usage in the ACME protocol.
This operation is implemented like a regular operation and it is up to the plugin to correctly handle responding with only header information without processing other details of the request. Plugins which do not support HEAD operations on a specified endpoint will return 404.