/// <summary>
/// Implements <see cref="SASLMechanism.ChallengeAsync"/> by calling <see cref="Challenge(ref SASLChallengeArguments, TCredentials)"/>.
/// If <see cref="SASLChallengeArguments.Credentials"/> is not of type <typeparamref name="TCredentials"/>, or if <see cref="Challenge(ref SASLChallengeArguments, TCredentials)"/> throws, then the exception is catched and error code returned by <see cref="GetExceptionErrorCode(Exception)"/> is returned.
/// </summary>
/// <param name="args">The <see cref="SASLChallengeArguments"/>.</param>
/// <returns>The result of <see cref="Challenge(ref SASLChallengeArguments, TCredentials)"/>, or error code returned by <see cref="GetExceptionErrorCode(Exception)"/>.</returns>
public TAsyncSyncChallengeResult ChallengeAsync(
SASLChallengeArguments args
)
{
try
{
return(new TAsyncSyncChallengeResult(this.Challenge(ref args, (TCredentials)args.Credentials)));
}
catch (Exception exc)
{
return(new TAsyncSyncChallengeResult(this.GetExceptionErrorCode(exc)));
}
}
/// <summary>
/// The derived classes should implement this method for their SASL challenge logic.
/// </summary>
/// <param name="args">The <see cref="SASLChallengeArguments"/>.</param>
/// <param name="credentials">The credentials.</param>
/// <returns>Result indicating how the challenge went, either tuple of how many bytes were written along with <see cref="SASLChallengeResult"/>, or a integer with error code.</returns>
protected abstract TAsyncSyncChallengeResult ChallengeAsync(
SASLChallengeArguments args,
TCredentials credentials
);
/// <summary>
/// Implements <see cref="AbstractAsyncSASLMechanism{TCredentials}.ChallengeAsync(SASLChallengeArguments, TCredentials)"/> by delegating implementation to <see cref="ChallengeAsync(SASLChallengeArguments, SASLCredentialsHolder, TCredentials)"/>.
/// </summary>
/// <param name="args">The <see cref="SASLChallengeArguments"/>.</param>
/// <param name="credentials">The <see cref="SASLCredentialsHolder"/>.</param>
/// <returns>Result of <see cref="ChallengeAsync(SASLChallengeArguments, SASLCredentialsHolder, TCredentials)"/>.</returns>
protected sealed override TAsyncSyncChallengeResult ChallengeAsync(
SASLChallengeArguments args,
SASLCredentialsHolder credentials
)
=> this.ChallengeAsync(args, credentials, (TCredentials)(credentials ?? throw new InvalidOperationException("No credential holder supplied")).Credentials);
/// <summary>
/// The derived classes should implement this method for their SASL challenge logic.
/// </summary>
/// <param name="args">The <see cref="SASLChallengeArguments"/>.</param>
/// <param name="credentials">The credentials.</param>
/// <returns>Result indicating how the challenge went, either tuple of how many bytes were written along with <see cref="SASLChallengeResult"/>, or a integer with error code.</returns>
protected abstract TSyncChallengeResult Challenge(
ref SASLChallengeArguments args,
TCredentials credentials
);