method TLSSocket.prototype.getSession
Usage in Deno
```typescript import { TLSSocket } from "node:node__tls.d.ts"; ```
TLSSocket.prototype.getSession(): Buffer | undefined
Returns the TLS session data or `undefined` if no session was
negotiated. On the client, the data can be provided to the `session` option of [connect](../.././node__tls.d.ts/~/connect) to resume the connection. On the server, it may be useful
for debugging.
See `Session Resumption` for more information.
Note: `getSession()` works only for TLSv1.2 and below. For TLSv1.3, applications
must use the `'session'` event (it also works for TLSv1.2 and below).
Buffer | undefined