[release/9.0-staging] Deny unmasked frame receive for WebSocket Server#123661
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wfurt merged 3 commits intorelease/9.0-stagingfrom Mar 13, 2026
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[release/9.0-staging] Deny unmasked frame receive for WebSocket Server#123661wfurt merged 3 commits intorelease/9.0-stagingfrom
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Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
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dotnet#123661) Backport of dotnet#123485 to release/9.0-staging /cc @liveans Increasing RFC compliance for WebSocket ## Customer Impact RFC compliance ## Regression No ## Testing Manual verification + automated tests ## Risk Low, the change only affects non‑compliant WebSocket clients sending unmasked frames, which is explicitly disallowed by RFC 6455. No behavior change is expected for compliant clients. --------- Co-authored-by: Ahmet İbrahim Aksoy <aaksoy@microsoft.com> Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
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Backport of #123485 to release/9.0-staging
/cc @liveans
Increasing RFC compliance for WebSocket
Customer Impact
RFC compliance
Regression
No
Testing
Manual verification + automated tests
Risk
Low, the change only affects non‑compliant WebSocket clients sending unmasked frames, which is explicitly disallowed by RFC 6455. No behavior change is expected for compliant clients.