1import fetch from 'node-fetch'
2import { betLog } from '../sharedF/betterConsLogF.mts'
3
4export const cfCdnTraceUrl = 'https://1.1.1.1/cdn-cgi/trace'
5const cfCdnTraceDomain = 'https://cloudflare.com/cdn-cgi/trace'
6
7export const parseCfCdnTrace = (text: string) => {
8  return Object.fromEntries(
9    text.split("\n").map(s => s.trim()).filter(Boolean).map(line => line.split("="))
10  )
11}
12
13export const getMyCfExtIp = async (): Promise<string | false> => {
14  const text = await (await fetch(cfCdnTraceUrl)).text()
15  const cfTrace = parseCfCdnTrace(text)
16  const {ip} = cfTrace
17  if (!ip) {
18    betLog(cfTrace)
19    console.log('softFail getMyExtIp')
20    return false
21  }
22  return ip
23}
24
25export const getCfExtIpViaDomain = async (): Promise<string | false> => {
26  try {
27    const text = await (await globalThis.fetch(cfCdnTraceDomain, {signal: AbortSignal.timeout(5000)})).text()
28    const {ip} = parseCfCdnTrace(text)
29    return ip || false
30  } catch { return false }
31}
32
33export type ExtIpSource = () => Promise<string | false>
34
35