tlsSocket.getPeerX509Certificate()

• 返回：<X509Certificate>

将对等证书作为 <X509Certificate> 对象返回。

【Returns the peer certificate as an <X509Certificate> object.】

如果没有对等证书，或者套接字已被销毁，将返回 undefined。

【If there is no peer certificate, or the socket has been destroyed, undefined will be returned.】