import com.github.ajalt.clikt.parameters.options.multiple
import com.github.ajalt.clikt.parameters.options.option
import com.github.ajalt.clikt.parameters.types.int
import java.security.cert.X509Certificate
import java.util.Properties
import java.util.concurrent.TimeUnit.SECONDS
import javax.net.ssl.HostnameVerifier
import javax.net.ssl.SSLSocketFactory
import javax.net.ssl.TrustManager

import java.net.Socket
import java.net.URI
import java.net.URL
import java.nio.charset.Charset
import java.security.KeyPair
import java.security.Principal
import java.security.cert.Certificate
import java.security.cert.X509Certificate
import javax.net.ServerSocketFactory
import javax.net.SocketFactory
import javax.net.ssl.HostnameVerifier
import javax.net.ssl.SSLSocket
import javax.net.ssl.SSLSocketFactory

	if !w.Enable {
		return nil
	}
	if w.Endpoint.IsEmpty() {
		return errors.New("endpoint empty")
	}
	if w.ClientCert != "" && w.ClientKey == "" || w.ClientCert == "" && w.ClientKey != "" {
		return errors.New("cert and key must be specified as a pair")
	}
	return nil
}

// WebhookTarget - Webhook target.
type WebhookTarget struct {
	activeRequests int64
	totalRequests  int64
	failedRequests int64

import java.net.HttpURLConnection.HTTP_UNAUTHORIZED
import java.net.HttpURLConnection.HTTP_UNAVAILABLE
import java.net.ProtocolException
import java.net.Proxy
import java.net.SocketTimeoutException
import java.security.cert.CertificateException
import javax.net.ssl.SSLHandshakeException
import javax.net.ssl.SSLPeerUnverifiedException
import okhttp3.Interceptor
import okhttp3.OkHttpClient
import okhttp3.Request
import okhttp3.Response

 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package okhttp3

import java.security.cert.Certificate
import java.security.cert.X509Certificate
import javax.net.ssl.SSLPeerUnverifiedException
import okhttp3.internal.filterList
import okhttp3.internal.tls.CertificateChainCleaner
import okhttp3.internal.toCanonicalHost

cert_authority                    (string)    path to certificate chain of the target NATS server
client_cert                       (string)    client cert for NATS mTLS auth
client_key                        (string)    client cert key for NATS mTLS auth
queue_dir                         (path)      staging dir for undelivered messages e.g. '/home/events'

    }

  // https://tools.ietf.org/html/rfc6066#page-6 specifies a FQDN is required.
  val hostname = "local.host"
  private val handshakeCertificates =
    run {
      // Generate a self-signed cert for the server to serve and the client to trust.
      val heldCertificate =
        HeldCertificate.Builder()
          .commonName(hostname)
          .addSubjectAlternativeName(hostname)
          .build()

a client certificate.

The following curl example shows how to authenticate to a MinIO server with client certificate and obtain STS access credentials.

```curl
curl -X POST --key private.key --cert public.crt "https://minio:9000?Action=AssumeRoleWithCertificate&Version=2011-06-15&DurationSeconds=3600"
```

```xml
<?xml version="1.0" encoding="UTF-8"?>

                </mxCell>
                <mxCell id="55" value="&lt;font face=&quot;Roboto&quot; data-font-src=&quot;https://fonts.googleapis.com/css?family=Roboto&quot; style=&quot;font-size: 24px ; font-weight: normal&quot;&gt;Cert Renovation Program&lt;/font&gt;" style="rounded=0;whiteSpace=wrap;html=1;fontStyle=1;strokeWidth=4;fillColor=#dae8fc;strokeColor=#6c8ebf;" vertex="1" parent="1">

		return errors.New("public key authority validation requested but no ca public key specified.")
	}

	cert, ok := clientKey.(*ssh.Certificate)
	if !ok {
		return errSftpPublicKeyWithoutCert
	}

	// ssh.CheckCert called by ssh.Authenticate accepts certificates
	// with empty principles list so we block those in here.
	if len(cert.ValidPrincipals) == 0 {
		return errSftpCertWithoutPrincipals
	}