ImapClientAuthenticateAsync Method (Encoding, ICredentials, CancellationToken)
public override Task AuthenticateAsync( Encoding encoding, ICredentials credentials, CancellationToken cancellationToken = null )
encoding is null.
credentials is null.
|ObjectDisposedException||The ImapClient has been disposed.|
|ServiceNotConnectedException||The ImapClient is not connected.|
|InvalidOperationException||The ImapClient is already authenticated.|
|OperationCanceledException||The operation was canceled via the cancellation token.|
|AuthenticationException||Authentication using the supplied credentials has failed.|
|SaslException||A SASL authentication error occurred.|
|IOException||An I/O error occurred.|
|ImapCommandException||An IMAP command failed.|
|ImapProtocolException||An IMAP protocol error occurred.|
If the IMAP server supports one or more SASL authentication mechanisms, then the SASL mechanisms that both the client and server support are tried in order of greatest security to weakest security. Once a SASL authentication mechanism is found that both client and server support, the credentials are used to authenticate.
If the server does not support SASL or if no common SASL mechanisms can be found, then LOGIN command is used as a fallback.
|To prevent the usage of certain authentication mechanisms, simply remove them from the AuthenticationMechanisms hash set before calling this method.|