SslStream.AuthenticateAsServer Method (X509Certificate)

Called by servers to authenticate the server and optionally the client in a client-server connection using the specified certificate.

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

public virtual void AuthenticateAsServer(
	X509Certificate serverCertificate
)

Parameters

serverCertificate
Type: System.Security.Cryptography.X509Certificates.X509Certificate
The certificate used to authenticate the server.

ExceptionCondition
ArgumentNullException

serverCertificate is null.

AuthenticationException

The authentication failed and left this object in an unusable state.

InvalidOperationException

Authentication has already occurred.

-or-

Client authentication using this SslStream was tried previously.

-or-

Authentication is already in progress.

ObjectDisposedException

This object has been closed.

PlatformNotSupportedException

The AuthenticateAsServer method is not supported on Windows 95, Windows 98, or Windows Millennium.

This method authenticates using the SslProtocols value set to Default. This value specifies that either Secure Sockets Layer (SSL) 3.0 or Transport Layer Security (TLS) 1.0 are acceptable for secure communications. TLS 1.1 or TLS 1.2 will not be used even if those protocols are enabled on local computer. The certificate revocation list is not checked during authentication. The client is not required to provide a certificate for authentication.

This method blocks until the operation completes. To prevent blocking until the operation completes, use one of the BeginAuthenticateAsServer method overloads.

If the authentication fails, you receive a AuthenticationException, and this SslStream is no longer useable. You should close this object and remove all references to it so that it can be collected by the garbage collector.

Windows 95, Windows 98, Windows 98 Second Edition, Windows Millennium Edition Platform Note: The AuthenticateAsServer method is not supported.

.NET Framework

Supported in: 4, 3.5, 3.0, 2.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
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