cherry-pick #9365 to v1.83.x - #9366
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…9365) Fixes : grpc#9354 This PR updates the HTTP/2 transport layer to reject requests missing both :authority and Host headers early. Also adds a defensive check in xds server to ensure authority header is present. RELEASE NOTES: - server: Reject requests missing both `:authority` and `Host` headers with HTTP 400 and status `Internal` --------- Co-authored-by: Madan Kumar <winklemad@outlook.com>
Codecov Report✅ All modified and coverable lines are covered by tests. Additional details and impacted files@@ Coverage Diff @@
## v1.83.x #9366 +/- ##
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+ Coverage 87.53% 87.55% +0.02%
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Files 421 421
Lines 29278 29284 +6
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+ Hits 25628 25641 +13
+ Misses 3650 3643 -7
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mbissa
approved these changes
Aug 25, 2026
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Original PR : #9365
RELEASE NOTES:
:authorityandHostheaders with HTTP 400 and statusInternal