Function createPinnedLookup

apps/sim/lib/core/security/input-validation.server.ts:403–414

(resolvedIP: string)

 * user-controlled hostnames via non-HTTP protocols (SMTP, SSH, IMAP, etc.).
 */
export function createPinnedLookup(resolvedIP: string): LookupFunction {
  const isIPv6 = resolvedIP.includes(':')
  const family = isIPv6 ? 6 : 4

  return (_hostname, options, callback) => {
    if (options.all) {
      callback(null, [{ address: resolvedIP, family }])
    } else {
      callback(null, resolvedIP, family)
    }
  }
}

/**
 * Builds a standard `fetch`-compatible function that pins every outbound