Method NormalizeMechanisms

Namespace

MailFathom.Domain.Transport

Assembly

MailFathom.Domain.dll

NormalizeMechanisms(IEnumerable<MailAuthenticationMechanism>)

Removes duplicates while keeping the configured order.

public static IReadOnlyList<MailAuthenticationMechanism> NormalizeMechanisms(IEnumerable<MailAuthenticationMechanism> permittedMechanisms)

Parameters

permittedMechanisms IEnumerable<MailAuthenticationMechanism>

The configured mechanisms.

Returns

IReadOnlyList<MailAuthenticationMechanism>

A read-only view that cannot be cast back to a mutable collection.

Remarks

The result is wrapped rather than returned as an array, because a caller could otherwise cast the advertised IReadOnlyList<T> back to the array and replace a validated mechanism with a clear-text one after the policy accepted it.

Exceptions

ArgumentNullException

Thrown when permittedMechanisms is null.