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Fix MsQuicConfiguration.GetConfigurationCacheEnabled #101555

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Apr 25, 2024
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Fix MsQuicConfiguration.GetConfigurationCacheEnabled #101555

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13 changes: 7 additions & 6 deletions src/libraries/System.Net.Quic/src/System/Net/Quic/Internal/MsQuicConfiguration.Cache.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -21,22 +21,23 @@ internal static partial class MsQuicConfiguration
private const string DisableCacheCtxSwitch = "System.Net.Quic.DisableConfigurationCache";

internal static bool ConfigurationCacheEnabled { get; } = GetConfigurationCacheEnabled();

private static bool GetConfigurationCacheEnabled()
{
// AppContext switch takes precedence
if (AppContext.TryGetSwitch(DisableCacheCtxSwitch, out bool value))
{
return !value;
}
else
// check environment variable second
else if (Environment.GetEnvironmentVariable(DisableCacheEnvironmentVariable) is string envVar)
{
// check environment variable
return
Environment.GetEnvironmentVariable(DisableCacheEnvironmentVariable) is string envVar &&
!(envVar == "1" || envVar.Equals("true", StringComparison.OrdinalIgnoreCase));
return !(envVar == "1" || envVar.Equals("true", StringComparison.OrdinalIgnoreCase));
}
}

// enabled by default
return true;
}
private static readonly ConcurrentDictionary<CacheKey, MsQuicConfigurationSafeHandle> s_configurationCache = new();

private readonly struct CacheKey : IEquatable<CacheKey>
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