Update dns-fix.js

dns-fix.js

@@ -1,108 +1,63 @@
-/**
- * DNS fix preload script for HF Spaces.
- *
- * Patches Node.js dns.lookup to:
- * 1. Try system DNS first
- * 2. Fall back to DNS-over-HTTPS (Cloudflare) if system DNS fails
- *    (This is needed because HF Spaces intercepts/blocks some domains like
- *    WhatsApp web or Telegram API via standard UDP DNS).
- *
- * Loaded via: NODE_OPTIONS="--require /opt/dns-fix.js"
- */
 "use strict";
 
 const dns = require("dns");
 const https = require("https");
 
-// In-memory cache for runtime DoH resolutions
-const runtimeCache = new Map(); // hostname -> { ip, expiry }
+// 1. TELEGRAM PROXY CONFIG
+// We redirect blocked api.telegram.org to a working mirror
+const TG_PROXY_HOST = "api.telegram-proxy.org"; // You can replace this with any working TG mirror
+
+const runtimeCache = new Map();
 
-// DNS-over-HTTPS resolver
 function dohResolve(hostname, callback) {
-  // Check runtime cache
   const cached = runtimeCache.get(hostname);
   if (cached && cached.expiry > Date.now()) {
     return callback(null, cached.ip);
   }
 
-  const url = `https://1.1.1.1/dns-query?name=${encodeURIComponent(hostname)}&type=A`;
-  const req = https.get(
-    url,
-    { headers: { Accept: "application/dns-json" }, timeout: 15000 },
-    (res) => {
-      let body = "";
-      res.on("data", (c) => (body += c));
-      res.on("end", () => {
-        try {
-          const data = JSON.parse(body);
-          const aRecords = (data.Answer || []).filter((a) => a.type === 1);
-          if (aRecords.length === 0) {
-            return callback(new Error(`DoH: no A record for ${hostname}`));
-          }
-          const ip = aRecords[0].data;
-          const ttl = Math.max((aRecords[0].TTL || 300) * 1000, 60000);
-          runtimeCache.set(hostname, { ip, expiry: Date.now() + ttl });
-          callback(null, ip);
-        } catch (e) {
-          callback(new Error(`DoH parse error: ${e.message}`));
-        }
-      });
-    }
-  );
-  req.on("error", (e) => callback(new Error(`DoH request failed: ${e.message}`)));
-  req.on("timeout", () => {
-    req.destroy();
-    callback(new Error("DoH request timed out"));
+  // Using Google DNS as it's often more stable in restricted regions
+  const url = `https://dns.google/resolve?name=${encodeURIComponent(hostname)}&type=A`;
+  
+  const req = https.get(url, { timeout: 10000 }, (res) => {
+    let body = "";
+    res.on("data", (c) => (body += c));
+    res.on("end", () => {
+      try {
+        const data = JSON.parse(body);
+        if (!data.Answer) return callback(new Error("No DNS Answer"));
+        const ip = data.Answer.find(a => a.type === 1).data;
+        runtimeCache.set(hostname, { ip, expiry: Date.now() + 600000 });
+        callback(null, ip);
+      } catch (e) {
+        callback(e);
+      }
+    });
   });
+  req.on("error", callback);
 }
 
-// Monkey-patch dns.lookup
 const origLookup = dns.lookup;
 
 dns.lookup = function patchedLookup(hostname, options, callback) {
-  // Normalize arguments (options is optional, can be number or object)
-  if (typeof options === "function") {
-    callback = options;
-    options = {};
-  }
-  if (typeof options === "number") {
-    options = { family: options };
+  if (typeof options === "function") { callback = options; options = {}; }
+  
+  // FORCE REDIRECT TELEGRAM
+  if (hostname === "api.telegram.org") {
+    console.log("⚡ Redirecting Telegram API through Proxy...");
+    return origLookup.call(dns, TG_PROXY_HOST, options, callback);
   }
-  options = options || {};
 
-  // Skip patching for localhost, IPs, and internal domains
-  if (
-    !hostname ||
-    hostname === "localhost" ||
-    hostname === "0.0.0.0" ||
-    hostname === "127.0.0.1" ||
-    hostname === "::1" ||
-    /^\d+\.\d+\.\d+\.\d+$/.test(hostname) ||
-    /^::/.test(hostname)
-  ) {
-    return origLookup.call(dns, hostname, options, callback);
-  }
-
-  // 1) Try system DNS first
+  // Standard Logic for other sites
   origLookup.call(dns, hostname, options, (err, address, family) => {
-    if (!err && address) {
-      return callback(null, address, family);
-    }
-
-    // 2) System DNS failed with ENOTFOUND or EAI_AGAIN — fall back to DoH
+    if (!err && address) return callback(null, address, family);
+    
     if (err && (err.code === "ENOTFOUND" || err.code === "EAI_AGAIN")) {
       dohResolve(hostname, (dohErr, ip) => {
-        if (dohErr || !ip) {
-          return callback(err); // Return original error
-        }
-        if (options.all) {
-          return callback(null, [{ address: ip, family: 4 }]);
-        }
+        if (dohErr) return callback(err);
         callback(null, ip, 4);
       });
     } else {
-      // Other DNS errors — pass through
       callback(err, address, family);
     }
   });
-};
+};