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Feat: add more way to fetch Telegram Backup IP

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This commit is contained in:
SukkaW 2025-08-09 00:02:48 +08:00
parent c4aa6afad3
commit b0b2026564
1 changed files with 26 additions and 10 deletions
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22
Build/build-telegram-cidr.ts
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@ -15,8 +15,7 @@ export const getTelegramCIDRPromise = once(async () => {
const date = lastModified ? new Date(lastModified) : new Date();
const ipcidr: string[] = [
// Telegram secret backup CIDR, announced by AS62041
// see also https://github.com/Telegram-FOSS-Team/Telegram-FOSS/blob/10da5406ed92d30c6add3b25d40b2b3b6995d873/TMessagesProj/src/main/java/org/telegram/tgnet/ConnectionsManager.java#L1157
// Unused secret Telegram backup CIDR, announced by AS62041
'95.161.64.0/20'
];
const ipcidr6: string[] = [];
@ -32,6 +31,8 @@ export const getTelegramCIDRPromise = once(async () => {
const backupIPs = new Set<string>();
// https://github.com/tdlib/td/blob/master/td/telegram/ConfigManager.cpp
// Backup IP Source 1 (DoH)
await Promise.all([
DNS2.DOHClient({
@ -43,6 +44,7 @@ export const getTelegramCIDRPromise = once(async () => {
http: false
})
].map(async (client) => {
try {
// tapv3.stel.com was for testing server
const resp = await client('apv3.stel.com', 'TXT');
const strings = resp.answers.map(i => i.data);
@ -53,9 +55,10 @@ export const getTelegramCIDRPromise = once(async () => {
const ips = getTelegramBackupIPFromBase64(str);
ips.forEach(i => i && backupIPs.add(i.ip));
} catch {}
}));
// Backup IP Source 2: Firebase Storage
// Backup IP Source 2: Firebase Realtime Database
try {
const text = await (await $$fetch('https://reserve-5a846.firebaseio.com/ipconfigv3.json')).json();
if (typeof text === 'string' && text.length === 344) {
@ -80,6 +83,19 @@ export const getTelegramCIDRPromise = once(async () => {
}
} catch {}
// Backup IP Source 4: Google App Engine: https://dns-telegram.appspot.com https://dns-telegram.appspot.com/test
try {
const text = await (await $$fetch('https://dns-telegram.appspot.com')).text();
if (text.length === 344) {
const ips = getTelegramBackupIPFromBase64(text);
ips.forEach(i => i && backupIPs.add(i.ip));
}
} catch {}
// tcdnb.azureedge.net no longer works
console.log(`Found ${backupIPs.size} backup IPs:`, backupIPs);
ipcidr.push(...Array.from(backupIPs).map(i => i + '/32'));
return { date, ipcidr, ipcidr6 };