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new description for appProtocol docs to reflect KEP-3726 (#40881) 

* add docs to reflect KEP-3726

* trigger tests

* replace "either" with "one of"

Co-authored-by: Qiming Teng <tengqm@outlook.com>

---------

Co-authored-by: Qiming Teng <tengqm@outlook.com>
pull/41088/head
Lior Lieberman 2023-05-11 15:29:02 +01:00 committed by GitHub
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content/en/docs/concepts/services-networking/service.md
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@ -348,12 +348,23 @@ The same API limit means that you cannot manually update an Endpoints to have mo
{{< feature-state for_k8s_version="v1.20" state="stable" >}}
The `appProtocol` field provides a way to specify an application protocol for
each Service port. The value of this field is mirrored by the corresponding
each Service port. This is used as a hint for implementations to offer richer behavior for protocols that they understand.
The value of this field is mirrored by the corresponding
Endpoints and EndpointSlice objects.
This field follows standard Kubernetes label syntax. Values should either be
[IANA standard service names](https://www.iana.org/assignments/service-names) or
domain prefixed names such as `mycompany.com/my-custom-protocol`.
This field follows standard Kubernetes label syntax. Valid values are one of:
* [IANA standard service names](https://www.iana.org/assignments/service-names).
* Implementation-defined prefixed names such as `mycompany.com/my-custom-protocol`.
* Kubernetes-defined prefixed names:
| Protocol | Description |
|----------|-------------|
| `kubernetes.io/h2c` | HTTP/2 over cleartext as described in [RFC 7540](https://www.rfc-editor.org/rfc/rfc7540) |
### Multi-port Services