Function encodeOptRecord

encodeOptRecord(opts?: EdnsOptions): ResourceRecord
Builds an EDNS0 OPT pseudo-record for the additional section (RFC 6891).

The OPT record repurposes the header fields: CLASS carries the UDP payload size and TTL packs the extended RCODE, version, and the DO (DNSSEC OK) bit. The owner name is always the root.
Parameters
- opts: EdnsOptions = {}
  The OPT parameters.
Returns ResourceRecord
A ResourceRecord ready to append to a message's additional section.
Since
1.0.4
Example
```
import { encodeOptRecord } from 'edgeport/dns';

const opt = encodeOptRecord({ dnssecOk: true }); // 4096-byte UDP size, DO bit set
```
- Defined in src/dns/message.ts:1405