NegotiateStream.AuthenticateAsServerAsync Method ()

.NET Framework (current version)
 

Called by servers to authenticate the client, and optionally the server, in a client-server connection as an asynchronous operation.

Namespace:   System.Net.Security
Assembly:  System (in System.dll)

[HostProtectionAttribute(SecurityAction.LinkDemand, ExternalThreading = true)]
public virtual Task AuthenticateAsServerAsync()

Return Value

Type: System.Threading.Tasks.Task

Returns Task

The task object representing the asynchronous operation.

Exception Condition
AuthenticationException

The authentication failed. You can use this object to retry the authentication.

InvalidCredentialException

The authentication failed. You can use this object to retry the authentication.

ObjectDisposedException

This object has been closed.

NotSupportedException

Windows 95 and Windows 98 are not supported.

The authentication uses the server's DefaultCredentials. No Service Principal Name (SPN) is specified for the server. The impersonation level is Identification, and the security level is EncryptAndSign.

When authentication succeeds, you must check the IsEncrypted and IsSigned properties to determine what security services are used by the NegotiateStream. Check the IsMutuallyAuthenticated property to determine whether mutual authentication occurred.

If the authentication fails, you receive an AuthenticationException or an InvalidCredentialException. In this case, you can retry the authentication with a different credential.

.NET Framework
Available since 4.5
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