Function writeDomainName

test/common/dns.js:184–192

(domain)

}

function writeDomainName(domain) {
  return Buffer.concat(domain.split('.').map((label) => {
    assert(label.length < 64);
    return Buffer.concat([
      Buffer.from([label.length]),
      Buffer.from(label, 'ascii'),
    ]);
  }).concat([Buffer.alloc(1)]));
}

function writeDNSPacket(parsed) {
  const buffers = [];