Refresh cached credentials after PreAuthenticate fails #101053
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wfurt
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Apr 21, 2024
| NetEventSource.Info(pool.PreAuthCredentials, $"Pre-authentication credentials changed, removing Basic credential uri={preAuthCredentialUri}, username={preAuthCredential.UserName}"); | ||
| } | ||
| pool.PreAuthCredentials.Remove(preAuthCredentialUri!, BasicScheme); | ||
| } |
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While we lock the PreAuthCredentials the logic leading to this can run in parallel, right? Do we have concurrency problem when Remove can throw? Perhaps use TryRemove?
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The method calls Dictionary<TKey, TValue>.Remove() internally, which does not throw if the key does not exist in the first place.
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But considering parallel requests, since we drop the lock between removing the creds and adding new ones, there may be some weird behavior if a parallel request starts when in-between. So I will move the removal to the same lock scope.
wfurt
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Apr 21, 2024
src/libraries/System.Net.Http/tests/FunctionalTests/HttpClientHandlerTest.BasicAuth.cs
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Test failures are known (HTTP3 tests which were addressed since the pipeline has run). |
michaelgsharp
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May 9, 2024
* Support refreshing credentials in pre-auth cache * Fix minor bug in CredentialCache * Add unit test * Fix tests * Fix tests attempt 2 * Merge two lock statements. * Fix build
Ruihan-Yin
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May 30, 2024
* Support refreshing credentials in pre-auth cache * Fix minor bug in CredentialCache * Add unit test * Fix tests * Fix tests attempt 2 * Merge two lock statements. * Fix build
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Fixes #93340.
This PR adds logic which, after Pre-Authenticated request fails with 401, checks whether the user supplied creentials are different from the cached ones, and if so, replaces the old (stale) creds with the new ones.
An implementational obstacle was removing the old creds from the preauth cache, because of insufficient API surface of CredentialCache. Therefore: