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The MalformedPacketsDuringHandshake_ThrowsAuthenticationException test (added by the MSRC 115387 fix) intermittently failed during the initial handshake with 'The remote certificate is invalid because of errors in the certificate chain: PartialChain'. Port the test fix from dotnet#130756: - Force TLS 1.2 so the test exercises renegotiation rather than TLS 1.3 post-handshake auth, and rename it to MalformedPacketsDuringRenegotiation_ThrowsAuthenticationException. - Set CertificateRevocationCheckMode = NoCheck on both endpoints to avoid the chain-building/revocation lookups that cause PartialChain in the offline CI environment. Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com> Copilot-Session: cc3902e4-17a5-438d-b7b5-c513f6c0fb07
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Tagging subscribers to this area: @dotnet/ncl, @bartonjs, @vcsjones |
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test-only change => tell-mode |
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Pull request overview
This PR backports a test-only fix to reduce flakiness in System.Net.Security by ensuring the malformed-packet scenario is exercised via TLS 1.2 renegotiation (instead of TLS 1.3 post-handshake auth) and by disabling revocation checks that can fail in offline CI environments.
Changes:
- Rename the flaky test to reflect it targets renegotiation (
MalformedPacketsDuringRenegotiation_ThrowsAuthenticationException). - Force
SslProtocols.Tls12on both client and server endpoints for deterministic renegotiation behavior. - Set
CertificateRevocationCheckMode = X509RevocationMode.NoCheckon both endpoints to avoid offline chain/revocation-related failures.
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/ba-g Test failures are unrelated |
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Test-only change, approved |
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Fixes Issue #130887
main PR #130756
Description
Test-only change.
The test
MalformedPacketsDuringHandshake_ThrowsAuthenticationExceptionwas added torelease/9.0-stagingas part of an internal fix. It intermittently fails during the initial handshake withSystem.Security.Authentication.AuthenticationException : The remote certificate is invalid because of errors in the certificate chain: PartialChain.This backports the test fix already merged to
mainin #130756:SslProtocols.Tls12on both endpoints so the test exercises TLS renegotiation rather than TLS 1.3 post-handshake authentication, and rename the test toMalformedPacketsDuringRenegotiation_ThrowsAuthenticationExceptionto match.CertificateRevocationCheckMode = X509RevocationMode.NoCheckon both endpoints to avoid the certificate chain-building / revocation lookups that cause thePartialChainfailure in the offline CI environment.Customer Impact
None. This is a test-only change that fixes a flaky/unreliable test in the CI.
Regression
No. This fixes flakiness in a newly added test; it is not a regression in shipping product behavior.
Testing
The identical change was merged and validated in CI on
main(#130756). Relying on this PR's CI to confirm the test passes reliably in the renegotiation (TLS 1.2) configuration.Risk
Low. Test-only change (
SslStreamStreamToStreamTest.cs), no product code affected. It mirrors a fix already merged and CI-validated onmain.Package authoring signed off?
N/A - test-only change, no shipping package is affected.
Note
This content was generated with the assistance of GitHub Copilot.