MCP Cloudflare DNS Server

'use strict'; const {isIP} = require('net'); const assert = require('assert'); const getHost = host => { if (host[0] === '[') { const idx = host.indexOf(']'); assert(idx !== -1); return host.slice(1, idx); } const idx = host.indexOf(':'); if (idx === -1) { return host; } return host.slice(0, idx); }; module.exports = host => { const servername = getHost(host); if (isIP(servername)) { return ''; } return servername; };