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registry: remove const for 'Docker-Distribution-Api-Version' header

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This header was used for fallbacks to v1 registries, but it's no longer
used, and marked optional / legacy in the OCI distribution-spec:

https://github.com/opencontainers/distribution-spec/blob/v1.0.0/spec.md#legacy-docker-support-http-headers

> Because of the origins this specification, the client MAY encounter
> Docker-specific headers, such as `Docker-Content-Digest`, or
> `Docker-Distribution-API-Version`. These headers are OPTIONAL and
> clients SHOULD NOT depend on them.

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
This commit is contained in:
Sebastiaan van Stijn 2021-06-24 22:08:28 +02:00
parent 7d471d88a0
commit b5835646eb
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1 changed files with 0 additions and 4 deletions
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4
registry/config.go
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@ -29,10 +29,6 @@ type serviceConfig struct {
const (
// DefaultNamespace is the default namespace
DefaultNamespace = "docker.io"
// DefaultRegistryVersionHeader is the name of the default HTTP header
// that carries Registry version info
DefaultRegistryVersionHeader = "Docker-Distribution-Api-Version"
// IndexHostname is the index hostname
IndexHostname = "index.docker.io"
// IndexServer is used for user auth and image search