# SubjectAlternativeNames

Used to generate Subject Alternative Names Matchers.

- Source: [`aws-appmesh/lib/tls-validation.ts`](https://github.com/aws/aws-cdk/blob/v2.275.0/packages/aws-cdk-lib/aws-appmesh/lib/tls-validation.ts#L184)

## Example

```ts
declare const mesh: appmesh.Mesh;

const node1 = new appmesh.VirtualNode(this, 'node1', {
  mesh,
  serviceDiscovery: appmesh.ServiceDiscovery.dns('node'),
  listeners: [appmesh.VirtualNodeListener.grpc({
    port: 80,
    tls: {
      mode: appmesh.TlsMode.STRICT,
      certificate: appmesh.TlsCertificate.file('path/to/certChain', 'path/to/privateKey'),
      // Validate a file client certificates to enable mutual TLS authentication when a client provides a certificate.
      mutualTlsValidation: {
        trust: appmesh.TlsValidationTrust.file('path-to-certificate'),
      },
    },
  })],
});

const certificateAuthorityArn = 'arn:aws:acm-pca:us-east-1:123456789012:certificate-authority/12345678-1234-1234-1234-123456789012';
const node2 = new appmesh.VirtualNode(this, 'node2', {
  mesh,
  serviceDiscovery: appmesh.ServiceDiscovery.dns('node2'),
  backendDefaults: {
    tlsClientPolicy: {
      ports: [8080, 8081],
      validation: {
        subjectAlternativeNames: appmesh.SubjectAlternativeNames.matchingExactly('mesh-endpoint.apps.local'),
        trust: appmesh.TlsValidationTrust.acm([
          acmpca.CertificateAuthority.fromCertificateAuthorityArn(this, 'certificate', certificateAuthorityArn)]),
      },
      // Provide a SDS client certificate when a server requests it and enable mutual TLS authentication.
      mutualTlsCertificate: appmesh.TlsCertificate.sds('secret_certificate'),
    },
  },
});
```

## Initializer

```ts
new SubjectAlternativeNames()
```

## Methods

- `bind(scope: Construct): SubjectAlternativeNamesMatcherConfig` — Returns Subject Alternative Names Matcher based on method type.

- `matchingExactly(...names: string[]): SubjectAlternativeNames // chainable` (static) — The values of the SAN must match the specified values exactly.

  **Parameters**

  - `names` — The exact values to test against.