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apis/v1beta1: Host header must not be modified #2092

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sunjayBhatia
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What type of PR is this?
/kind cleanup

What this PR does / why we need it:
Adds clarification to the spec to go along with existing conformance test from #1980.

Which issue(s) this PR fixes:
Fixes #2091

Does this PR introduce a user-facing change?:

Clarify that implementations must not modify HTTP Host header. Adds specificity alongside spec that port in Host header must be ignored when matching on host.

Adds clarification to the spec to go along with existing conformance
test from kubernetes-sigs#1980.

Signed-off-by: Sunjay Bhatia <sunjayb@vmware.com>
@k8s-ci-robot k8s-ci-robot added release-note Denotes a PR that will be considered when it comes time to generate release notes. kind/cleanup Categorizes issue or PR as related to cleaning up code, process, or technical debt. cncf-cla: yes Indicates the PR's author has signed the CNCF CLA. labels Jun 5, 2023
@k8s-ci-robot k8s-ci-robot added the size/XS Denotes a PR that changes 0-9 lines, ignoring generated files. label Jun 5, 2023
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@shaneutt shaneutt left a comment

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/approve

/cc @robscott @youngnick

@k8s-ci-robot k8s-ci-robot added the approved Indicates a PR has been approved by an approver from all required OWNERS files. label Jun 5, 2023
@@ -59,7 +59,8 @@ type HTTPRouteSpec struct {
// Hostnames defines a set of hostname that should match against the HTTP Host
// header to select a HTTPRoute used to process the request. Implementations
// MUST ignore any port value specified in the HTTP Host header while
// performing a match.
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suggest

// MUST ignore any port value specified in the HTTP Host header while
// performing a match, without modifying it.

@youngnick
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Thanks @sunjayBhatia, great clarification. I think with the added text, @arkodg's comment is handled as well. I'll lgtm and hold to see if anyone has anything else.

/lgtm
/hold

@k8s-ci-robot k8s-ci-robot added the do-not-merge/hold Indicates that a PR should not merge because someone has issued a /hold command. label Jun 6, 2023
@k8s-ci-robot k8s-ci-robot added the lgtm "Looks good to me", indicates that a PR is ready to be merged. label Jun 6, 2023
@robscott
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robscott commented Jun 6, 2023

Thanks @sunjayBhatia!

/approve
/hold cancel

@k8s-ci-robot k8s-ci-robot removed the do-not-merge/hold Indicates that a PR should not merge because someone has issued a /hold command. label Jun 6, 2023
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[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: howardjohn, robscott, shaneutt, sunjayBhatia

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@k8s-ci-robot k8s-ci-robot merged commit 260e5ff into kubernetes-sigs:main Jun 6, 2023
@sunjayBhatia sunjayBhatia deleted the hostname-ignore-port branch June 6, 2023 18:08
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approved Indicates a PR has been approved by an approver from all required OWNERS files. cncf-cla: yes Indicates the PR's author has signed the CNCF CLA. kind/cleanup Categorizes issue or PR as related to cleaning up code, process, or technical debt. lgtm "Looks good to me", indicates that a PR is ready to be merged. release-note Denotes a PR that will be considered when it comes time to generate release notes. size/XS Denotes a PR that changes 0-9 lines, ignoring generated files.
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Successfully merging this pull request may close these issues.

Further clarification on hostname matching and forwarding when Host header includes a port
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