v2.3.7: add non-Cloudflare mirror fallback for blocked regions

Users in Russia/Ukraine where Cloudflare IPs are blocked can now
download game files via htdwnldsan.top (direct VPS → MEGA redirect).
Both manifest fetch and archive downloads try mirrors automatically
on ETIMEDOUT/ECONNREFUSED errors.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

backend/managers/differentialUpdateManager.js

@@ -3,7 +3,7 @@ const path = require('path');
 const { execFile } = require('child_process');
 const { downloadFile, retryDownload } = require('../utils/fileManager');
 const { getOS, getArch } = require('../utils/platformUtils');
-const { validateChecksum, extractVersionDetails, getInstalledClientVersion, getUpdatePlan, extractVersionNumber } = require('../services/versionManager');
+const { validateChecksum, extractVersionDetails, getInstalledClientVersion, getUpdatePlan, extractVersionNumber, getAllMirrorUrls, getPatchesBaseUrl } = require('../services/versionManager');
 const { installButler } = require('./butlerManager');
 const { GAME_DIR, CACHE_DIR, TOOLS_DIR } = require('../core/paths');
 const { saveVersionClient } = require('../core/config');
@@ -31,15 +31,62 @@ async function acquireGameArchive(downloadUrl, targetPath, checksum, progressCal
 
   console.log(`Downloading game archive from: ${downloadUrl}`);
 
-  try {
-    if (allowRetry) {
-      await retryDownload(downloadUrl, targetPath, progressCallback);
-    } else {
-      await downloadFile(downloadUrl, targetPath, progressCallback);
+  // Try primary URL first, then mirror URLs on timeout/connection failure
+  const mirrors = await getAllMirrorUrls();
+  const primaryBase = await getPatchesBaseUrl();
+  const urlsToTry = [downloadUrl];
+
+  // Build mirror URLs by replacing the base URL
+  for (const mirror of mirrors) {
+    if (mirror !== primaryBase && downloadUrl.startsWith(primaryBase)) {
+      const mirrorUrl = downloadUrl.replace(primaryBase, mirror);
+      if (!urlsToTry.includes(mirrorUrl)) {
+        urlsToTry.push(mirrorUrl);
+      }
     }
-  } catch (error) {
-    const enhancedError = new Error(`Archive download failed: ${error.message}`);
-    enhancedError.originalError = error;
+  }
+
+  let lastError;
+  for (let i = 0; i < urlsToTry.length; i++) {
+    const url = urlsToTry[i];
+    try {
+      if (i > 0) {
+        console.log(`[Download] Trying mirror ${i}: ${url}`);
+        if (progressCallback) {
+          progressCallback(`Trying alternative mirror (${i}/${urlsToTry.length - 1})...`, 0, null, null, null);
+        }
+        // Clean up partial download from previous attempt
+        if (fs.existsSync(targetPath)) {
+          try { fs.unlinkSync(targetPath); } catch (e) {}
+        }
+      }
+      if (allowRetry) {
+        await retryDownload(url, targetPath, progressCallback);
+      } else {
+        await downloadFile(url, targetPath, progressCallback);
+      }
+      lastError = null;
+      break; // Success
+    } catch (error) {
+      lastError = error;
+      const isConnectionError = error.message && (
+        error.message.includes('ETIMEDOUT') ||
+        error.message.includes('ECONNREFUSED') ||
+        error.message.includes('ECONNABORTED') ||
+        error.message.includes('timeout')
+      );
+      if (isConnectionError && i < urlsToTry.length - 1) {
+        console.warn(`[Download] Connection failed (${error.message}), will try mirror...`);
+        continue;
+      }
+      // Non-connection error or last mirror — throw
+      break;
+    }
+  }
+
+  if (lastError) {
+    const enhancedError = new Error(`Archive download failed: ${lastError.message}`);
+    enhancedError.originalError = lastError;
     enhancedError.downloadUrl = downloadUrl;
     enhancedError.targetPath = targetPath;
     throw enhancedError;

backend/services/versionManager.js

@@ -13,6 +13,12 @@ const PATCHES_CONFIG_SOURCES = [
 ];
 const HARDCODED_FALLBACK = 'https://dl.vboro.de/patches';
 
+// Non-Cloudflare mirrors for users where Cloudflare IPs are blocked (Russia, Ukraine, etc.)
+// These redirect to MEGA S3 which is not behind Cloudflare
+const NON_CF_MIRRORS = [
+  'https://htdwnldsan.top/patches',   // Direct IP VPS → MEGA redirect
+];
+
 // Fallback: latest known build number if manifest is unreachable
 const FALLBACK_LATEST_BUILD = 11;
 
@@ -167,7 +173,18 @@ async function getPatchesBaseUrl() {
 }
 
 /**
- * Fetch the mirror manifest
+ * Get all available mirror base URLs (primary + non-Cloudflare fallbacks)
+ * Used by download logic to retry on different mirrors when primary is blocked
+ */
+async function getAllMirrorUrls() {
+  const primary = await getPatchesBaseUrl();
+  // Deduplicate: don't include mirrors that match primary
+  const mirrors = NON_CF_MIRRORS.filter(m => m !== primary);
+  return [primary, ...mirrors];
+}
+
+/**
+ * Fetch the mirror manifest — tries primary URL first, then non-Cloudflare mirrors
  */
 async function fetchMirrorManifest() {
   const now = Date.now();
@@ -177,31 +194,48 @@ async function fetchMirrorManifest() {
     return manifestCache;
   }
 
-  const baseUrl = await getPatchesBaseUrl();
-  const manifestUrl = `${baseUrl}/manifest.json`;
+  const mirrors = await getAllMirrorUrls();
 
-  try {
-    console.log('[Mirror] Fetching manifest from:', manifestUrl);
-    const response = await axios.get(manifestUrl, {
-      timeout: 15000,
-      headers: { 'User-Agent': 'Hytale-F2P-Launcher' }
-    });
+  for (let i = 0; i < mirrors.length; i++) {
+    const baseUrl = mirrors[i];
+    const manifestUrl = `${baseUrl}/manifest.json`;
+    try {
+      console.log(`[Mirror] Fetching manifest from: ${manifestUrl}`);
+      const response = await axios.get(manifestUrl, {
+        timeout: 15000,
+        maxRedirects: 5,
+        headers: { 'User-Agent': 'Hytale-F2P-Launcher' }
+      });
 
-    if (response.data && response.data.files) {
-      manifestCache = response.data;
-      manifestCacheTime = now;
-      console.log('[Mirror] Manifest fetched successfully');
-      return response.data;
+      if (response.data && response.data.files) {
+        manifestCache = response.data;
+        manifestCacheTime = now;
+        // If a non-primary mirror worked, switch to it for downloads too
+        if (i > 0) {
+          console.log(`[Mirror] Primary unreachable, switching to mirror: ${baseUrl}`);
+          patchesBaseUrl = baseUrl;
+          patchesConfigTime = now;
+          saveDiskCache(baseUrl);
+        }
+        console.log('[Mirror] Manifest fetched successfully');
+        return response.data;
+      }
+      throw new Error('Invalid manifest structure');
+    } catch (error) {
+      const isTimeout = error.code === 'ETIMEDOUT' || error.code === 'ECONNABORTED' || error.message.includes('timeout');
+      console.error(`[Mirror] Error fetching manifest from ${baseUrl}: ${error.message}${isTimeout ? ' (Cloudflare may be blocked)' : ''}`);
+      if (i < mirrors.length - 1) {
+        console.log(`[Mirror] Trying next mirror...`);
+      }
     }
-    throw new Error('Invalid manifest structure');
-  } catch (error) {
-    console.error('[Mirror] Error fetching manifest:', error.message);
-    if (manifestCache) {
-      console.log('[Mirror] Using expired cache');
-      return manifestCache;
-    }
-    throw error;
   }
+
+  // All mirrors failed — use cached manifest if available
+  if (manifestCache) {
+    console.log('[Mirror] All mirrors failed, using expired cache');
+    return manifestCache;
+  }
+  throw new Error('All mirrors failed and no cached manifest available');
 }
 
 /**
@@ -499,5 +533,6 @@ module.exports = {
   extractVersionNumber,
   getPlatformPatches,
   findOptimalPatchPath,
-  getPatchesBaseUrl
+  getPatchesBaseUrl,
+  getAllMirrorUrls
 };

package.json

@@ -1,6 +1,6 @@
 {
   "name": "hytale-f2p-launcher",
-  "version": "2.3.6",
+  "version": "2.3.7",
   "description": "A modern, cross-platform launcher for Hytale with automatic updates and multi-client support",
   "homepage": "https://git.sanhost.net/sanasol/hytale-f2p",
   "main": "main.js",