v2.3.2: fix truncated download cache, update Discord link

Fix pre-release downloads failing with "unexpected EOF" by validating
cached PWR file sizes against manifest expected sizes. Previously only
checked > 1MB which accepted truncated files. Also update Discord
invite link to new server across all files.

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

.github/CODE_OF_CONDUCT.md

@@ -36,7 +36,7 @@ This Code of Conduct applies within all community spaces, and also applies when
 
 ## Enforcement
 
-Instances of abusive, harassing, or otherwise unacceptable behavior may be reported to the community leaders responsible for enforcement at [Discord Server, message Founders/Devs](https://discord.gg/hf2pdc). All complaints will be reviewed and investigated promptly and fairly.
+Instances of abusive, harassing, or otherwise unacceptable behavior may be reported to the community leaders responsible for enforcement at [Discord Server, message Founders/Devs](https://discord.gg/Fhbb9Yk5WW). All complaints will be reviewed and investigated promptly and fairly.
 
 All community leaders are obligated to respect the privacy and security of the reporter of any incident.
 

.github/ISSUE_TEMPLATE/support_request.yml

@@ -22,7 +22,7 @@ body:
       value: |
         If you need help or support with using the launcher, please fill out this support request.
         Provide as much detail as possible so we can assist you effectively.
-        **Need a quick assistance?** Please Open-A-Ticket in our [Discord Server](https://discord.gg/gME8rUy3MB)!
+        **Need a quick assistance?** Please Open-A-Ticket in our [Discord Server](https://discord.gg/Fhbb9Yk5WW)!
 
   - type: textarea
     id: question

.gitignore

@@ -17,6 +17,9 @@ dist/
 # Project Specific: Downloaded patcher (from hytale-auth-server)
 backend/patcher/
 
+# Private docs (local only)
+docs/PATCH_CDN_INFRASTRUCTURE.md
+
 # macOS Specific
 .DS_Store
 *.zst.DS_Store

GUI/js/script.js

@@ -53,7 +53,7 @@ window.closeDiscordPopup = function() {
 };
 
 window.joinDiscord = async function() {
-  await window.electronAPI?.openExternal('https://discord.gg/hf2pdc');
+  await window.electronAPI?.openExternal('https://discord.gg/Fhbb9Yk5WW');
   
   try {
     await window.electronAPI?.saveConfig({ discordPopup: true });

GUI/js/ui.js

@@ -1103,7 +1103,7 @@ function getRetryContextMessage() {
 }
 
 window.openDiscordExternal = function() {
-  window.electronAPI?.openExternal('https://discord.gg/hf2pdc');
+  window.electronAPI?.openExternal('https://discord.gg/Fhbb9Yk5WW');
 };
 
 window.toggleMaximize = toggleMaximize;

README.md

@@ -18,7 +18,7 @@
 
 ### ⚠️ **WARNING: READ [QUICK START](#-quick-start) before Downloading & Installing the Launcher!** ⚠️
 
-#### 🛑 **Found a problem? [Join the HF2P Discord](https://discord.gg/hf2pdc) and head to `#-⚠️-community-help`** 🛑
+#### 🛑 **Found a problem? [Join the HF2P Discord](https://discord.gg/Fhbb9Yk5WW) and head to `#-⚠️-community-help`** 🛑
 
 <p>
   👍 If you like the project, <b>feel free to support us via Buy Me a Coffee!</b> ☕<br>
@@ -455,7 +455,7 @@ See [BUILD.md](docs/BUILD.md) for comprehensive build instructions.
 <div align="center">
 
 **Questions? Ads? Collaboration? Endorsement? Other business-related?** 
-Message the founders at https://discord.gg/hf2pdc
+Message the founders at https://discord.gg/Fhbb9Yk5WW
 
 </div>
 

SERVER.md

@@ -2,7 +2,7 @@
 
 Play with friends online! This guide covers both easy in-game hosting and advanced dedicated server setup.
 
-### **DOWNLOAD SERVER FILES (JAR/RAR/SCRIPTS) HERE: https://discord.gg/hf2pdc** 
+### **DOWNLOAD SERVER FILES (JAR/RAR/SCRIPTS) HERE: https://discord.gg/Fhbb9Yk5WW** 
 
 **Table of Contents**
 

TROUBLESHOOTING.md

@@ -1,6 +1,6 @@
 # Hytale F2P Launcher - Troubleshooting Guide
 
-This guide covers common issues and their solutions. If your issue isn't listed here, please check [existing issues](https://github.com/amiayweb/Hytale-F2P/issues) or join our [Discord](https://discord.gg/gME8rUy3MB).
+This guide covers common issues and their solutions. If your issue isn't listed here, please check [existing issues](https://github.com/amiayweb/Hytale-F2P/issues) or join our [Discord](https://discord.gg/Fhbb9Yk5WW).
 
 ---
 
@@ -437,7 +437,7 @@ Game sessions have a 10-hour TTL. This is by design for security.
 If your issue isn't resolved by this guide:
 
 1. **Check existing issues:** [GitHub Issues](https://github.com/amiayweb/Hytale-F2P/issues)
-2. **Join Discord:** [discord.gg/gME8rUy3MB](https://discord.gg/gME8rUy3MB)
+2. **Join Discord:** [discord.gg/Fhbb9Yk5WW](https://discord.gg/Fhbb9Yk5WW)
 3. **Open a new issue** with:
    - Your operating system and version
    - Launcher version

backend/managers/gameManager.js

@@ -64,7 +64,7 @@ async function safeRemoveDirectory(dirPath, maxRetries = 3) {
   }
 }
 
-async function downloadPWR(branch = 'release', fileName = 'v8', progressCallback, cacheDir = CACHE_DIR, manualRetry = false, directUrl = null) {
+async function downloadPWR(branch = 'release', fileName = 'v8', progressCallback, cacheDir = CACHE_DIR, manualRetry = false, directUrl = null, expectedSize = null) {
   const osName = getOS();
   const arch = getArch();
 
@@ -91,17 +91,47 @@ async function downloadPWR(branch = 'release', fileName = 'v8', progressCallback
     }
   }
 
+  // Look up expected file size from manifest if not provided
+  if (!expectedSize) {
+    try {
+      const { fetchMirrorManifest } = require('../services/versionManager');
+      const manifest = await fetchMirrorManifest();
+      // Try to match: "0_to_11" format or "v11" format
+      const versionMatch = fileName.match(/^(\d+)_to_(\d+)$/);
+      let manifestKey;
+      if (versionMatch) {
+        manifestKey = `${osName}/${arch}/${branch}/${fileName}.pwr`;
+      } else {
+        const buildNum = extractVersionNumber(fileName);
+        manifestKey = `${osName}/${arch}/${branch}/0_to_${buildNum}.pwr`;
+      }
+      if (manifest.files[manifestKey]) {
+        expectedSize = manifest.files[manifestKey].size;
+        console.log(`[PWR] Expected size from manifest: ${(expectedSize / 1024 / 1024).toFixed(2)} MB`);
+      }
+    } catch (e) {
+      console.log(`[PWR] Could not fetch expected size from manifest: ${e.message}`);
+    }
+  }
+
   const dest = path.join(cacheDir, `${branch}_${fileName}.pwr`);
 
   // Check if file exists and validate it
   if (fs.existsSync(dest) && !manualRetry) {
     const stats = fs.statSync(dest);
     if (stats.size > 1024 * 1024) {
+      // Validate against expected size - reject if file is truncated (< 99% of expected)
+      if (expectedSize && stats.size < expectedSize * 0.99) {
+        console.log(`[PWR] Cached file truncated: ${(stats.size / 1024 / 1024).toFixed(2)} MB, expected ${(expectedSize / 1024 / 1024).toFixed(2)} MB. Deleting and re-downloading.`);
+        fs.unlinkSync(dest);
+      } else {
         console.log(`[PWR] Using cached file: ${dest} (${(stats.size / 1024 / 1024).toFixed(2)} MB)`);
         return dest;
       }
+    } else {
       console.log(`[PWR] Cached file too small (${stats.size} bytes), re-downloading`);
     }
+  }
 
   console.log(`[DownloadPWR] Downloading from: ${url}`);
   
@@ -129,7 +159,7 @@ async function downloadPWR(branch = 'release', fileName = 'v8', progressCallback
         const retryStats = fs.statSync(dest);
         console.log(`PWR file downloaded (auto-retry), size: ${(retryStats.size / 1024 / 1024).toFixed(2)} MB`);
         
-        if (!validatePWRFile(dest)) {
+        if (!validatePWRFile(dest, expectedSize)) {
           console.log(`[PWR Validation] PWR file validation failed after auto-retry, deleting corrupted file: ${dest}`);
           fs.unlinkSync(dest);
           throw new Error('Downloaded PWR file is corrupted or invalid after automatic retry. Please retry manually');
@@ -180,7 +210,7 @@ async function downloadPWR(branch = 'release', fileName = 'v8', progressCallback
   const stats = fs.statSync(dest);
   console.log(`PWR file downloaded, size: ${(stats.size / 1024 / 1024).toFixed(2)} MB`);
 
-  if (!validatePWRFile(dest)) {
+  if (!validatePWRFile(dest, expectedSize)) {
     console.log(`[PWR Validation] PWR file validation failed, deleting corrupted file: ${dest}`);
     fs.unlinkSync(dest);
     throw new Error('Downloaded PWR file is corrupted or invalid. Please retry');
@@ -440,7 +470,7 @@ async function updateGameFiles(newVersion, progressCallback, gameDir = GAME_DIR,
           progressCallback(`Downloading patch ${i + 1}/${updatePlan.steps.length} (${stepName})...`, progress, null, null, null);
         }
 
-        const pwrFile = await downloadPWR(branch, stepName, progressCallback, cacheDir, false, step.url);
+        const pwrFile = await downloadPWR(branch, stepName, progressCallback, cacheDir, false, step.url, step.size);
 
         if (!pwrFile) {
           throw new Error(`Failed to download patch ${stepName}`);
@@ -891,7 +921,7 @@ function validateGameDirectory(gameDir, stagingDir) {
 
 // Enhanced PWR file validation
 // Accepts intermediate patches (50+ MB) and full installs (1.5+ GB)
-function validatePWRFile(filePath) {
+function validatePWRFile(filePath, expectedSize = null) {
   try {
     if (!fs.existsSync(filePath)) {
       return false;
@@ -906,6 +936,13 @@ function validatePWRFile(filePath) {
       return false;
     }
 
+    // Validate against expected size if known (reject if < 99% of expected)
+    if (expectedSize && stats.size < expectedSize * 0.99) {
+      const expectedMB = expectedSize / 1024 / 1024;
+      console.log(`[PWR Validation] File truncated: ${sizeInMB.toFixed(2)} MB, expected ${expectedMB.toFixed(2)} MB`);
+      return false;
+    }
+
     console.log(`[PWR Validation] File size: ${sizeInMB.toFixed(2)} MB - OK`);
     return true;
   } catch (error) {

docs/PATCH_CDN_INFRASTRUCTURE.md

@@ -1,217 +0,0 @@
-# Patch CDN Infrastructure & Game Update System
-
-## Overview
-
-The F2P launcher downloads game patches through a CDN redirect gateway hosted on the auth server. This allows instant CDN switching (e.g., for DMCA takedowns) without releasing a new launcher version.
-
-## Architecture
-
-```
-Launcher --> GET auth.sanasol.ws/patches/manifest.json
-          --> 302 --> mega.io/.../manifest.json
-
-Launcher --> GET auth.sanasol.ws/patches/windows/amd64/release/0_to_11.pwr
-          --> 302 --> mega.io/.../windows/amd64/release/0_to_11.pwr
-```
-
-The auth server acts as a pure redirect gateway (302). No bandwidth is consumed on the auth server - all actual file transfers happen directly between the launcher and the CDN.
-
-## URLs
-
-| URL | Purpose |
-|-----|---------|
-| `https://auth.sanasol.ws/patches/*` | Redirect gateway (302 -> CDN) |
-| `https://auth.sanasol.ws/patches/manifest.json` | Patch manifest (redirects to CDN) |
-| `https://auth.sanasol.ws/admin/page/settings` | Admin panel to change CDN URL |
-| `https://auth.sanasol.ws/admin/api/settings/patches-cdn` | API to GET/POST CDN base URL |
-
-### Default CDN (MEGA S4)
-
-```
-Base URL: https://s3.g.s4.mega.io/kcvismkrtfcalgwxzsazbq46l72dwsypqaham/hytale/patches
-```
-
-### Changing CDN (DMCA response)
-
-1. Go to `https://auth.sanasol.ws/admin/page/settings`
-2. Find "Patches CDN Base URL" section
-3. Change URL to new CDN (e.g., `https://new-cdn.example.com/patches`)
-4. Click "Save" - all launcher requests instantly redirect to new CDN
-5. No launcher update needed
-
-## Manifest Format
-
-The manifest is a JSON file listing all available patch files:
-
-```json
-{
-  "updated": "2026-02-20T13:20:09.776Z",
-  "files": {
-    "windows/amd64/release/0_to_11.pwr": { "size": 1618804736 },
-    "windows/amd64/release/10_to_11.pwr": { "size": 62914560 },
-    "darwin/arm64/release/0_to_11.pwr": { "size": 1617100800 },
-    "server/release": { "version": "2026.02.19-1a311a592", "size": 1509949440, "sha256": "..." },
-    ...
-  }
-}
-```
-
-### Key Structure
-
-File keys follow the pattern: `{os}/{arch}/{branch}/{from}_to_{to}.pwr`
-
-- **OS**: `windows`, `linux`, `darwin`
-- **Arch**: `amd64`, `arm64`
-- **Branch**: `release`, `pre-release`
-- **Patch**: `{from}_to_{to}.pwr` (e.g., `0_to_11.pwr` for full install, `10_to_11.pwr` for differential)
-
-Server builds use: `server/{branch}` with `version`, `size`, `sha256` fields.
-
-## Game Update Process
-
-### 1. Version Check
-
-```
-Launcher calls: getLatestClientVersion(branch)
-  -> Fetches manifest from auth.sanasol.ws/patches/manifest.json
-  -> Finds highest build number for current platform/branch
-  -> Returns "v{buildNumber}" (e.g., "v11")
-```
-
-### 2. Update Plan (Optimal Patch Routing)
-
-```
-Launcher calls: getUpdatePlan(currentBuild, targetBuild, branch)
-  -> Fetches manifest
-  -> Finds available patches for platform
-  -> Uses BFS to find optimal path (minimizes total download size)
-  -> Example: build 5 -> 11 might use: 5->10 (148MB) + 10->11 (60MB)
-    instead of: 0->11 (1.5GB)
-```
-
-### 3. Download & Apply
-
-```
-For each step in the update plan:
-  1. Download .pwr file from auth.sanasol.ws/patches/{key}
-     (redirects to CDN, supports resume via Range headers)
-  2. Apply patch using butler tool:
-     butler apply --staging-dir <staging> <pwr_file> <game_dir>
-  3. Save version after each step
-```
-
-### 4. Fresh Install
-
-For first-time installs (currentBuild = 0):
-- Downloads `0_to_{target}.pwr` (full install, ~1.5GB)
-- Applies with butler to create the full game directory
-
-### 5. Differential Update
-
-For existing installations:
-- Finds optimal patch chain (e.g., `10_to_11.pwr` at ~60MB)
-- Applies incrementally, saving progress after each step
-- Falls back to full install if no patch path found
-
-## Mirror Sync Script
-
-The mirror script (`scripts/hytale-mirror.js`) downloads patches from the official Hytale API and uploads to MEGA S4.
-
-### Usage
-
-```bash
-cd scripts
-node hytale-mirror.js download   # Download patches locally
-node hytale-mirror.js upload     # Upload to MEGA S4 via rclone
-node hytale-mirror.js sync       # Download + Upload in one step
-```
-
-### What It Does
-
-1. **Discovery**: Calls Hytale API to find available patches for all platforms
-2. **Download**: Downloads .pwr files to `scripts/mirror/` directory
-3. **Manifest Generation**: Creates `manifest.json` with file sizes (no local paths)
-4. **Upload**: Uses `rclone` to sync to MEGA S4
-
-### SOCKS5 Proxy
-
-- API discovery calls use SOCKS5 proxy rotation (for rate limiting)
-- File downloads do NOT use proxy (too slow for large files)
-- Proxy list in `proxies.json` (auto-refreshed from proxy service)
-
-### Prerequisites
-
-- `rclone` configured with `megas4` remote pointing to MEGA S4
-- Node.js 20+
-- Network access to Hytale API endpoints
-
-## Launcher Configuration
-
-### Environment Variables
-
-| Variable | Default | Description |
-|----------|---------|-------------|
-| `HYTALE_AUTH_DOMAIN` | `auth.sanasol.ws` | Auth domain (used for patch redirects) |
-
-### Key Files
-
-| File | Description |
-|------|-------------|
-| `backend/services/versionManager.js` | Manifest fetching, version checking, update planning |
-| `backend/managers/differentialUpdateManager.js` | Download orchestration, butler integration |
-| `backend/utils/fileManager.js` | File download with retry, resume, stall detection |
-| `backend/managers/gameLauncher.js` | Game launch with token fetch, patching, signing |
-
-### Constants (versionManager.js)
-
-```javascript
-const AUTH_DOMAIN = process.env.HYTALE_AUTH_DOMAIN || 'auth.sanasol.ws';
-const MIRROR_BASE_URL = `https://${AUTH_DOMAIN}/patches`;
-const MIRROR_MANIFEST_URL = `${MIRROR_BASE_URL}/manifest.json`;
-const MANIFEST_CACHE_DURATION = 60000; // 1 minute cache
-const FALLBACK_LATEST_BUILD = 11; // If manifest unreachable
-```
-
-## Auth Server Implementation
-
-### Routes
-
-```
-GET /patches/*  -> handlePatchRedirect()
-  - Extracts path after /patches/
-  - Reads CDN base URL from Redis settings
-  - Returns 302 redirect to {baseUrl}/{path}
-  - Tracks download metrics
-
-GET /admin/api/settings/patches-cdn -> getPatchesCdnBaseUrl()
-POST /admin/api/settings/patches-cdn -> setPatchesCdnBaseUrl()
-```
-
-### Redis Storage
-
-```
-settings:global -> { patchesCdnBaseUrl: "https://s3.g.s4.mega.io/..." }
-metrics:downloads -> { "patch:manifest.json": count, ... }
-```
-
-## Troubleshooting
-
-### "Invalid manifest structure" error
-- Check manifest.json is valid JSON with `files` object
-- Verify CDN is accessible: `curl -sL https://auth.sanasol.ws/patches/manifest.json | python3 -m json.tool`
-- Check admin settings for correct CDN URL
-
-### 0-byte downloads
-- Verify redirect works: `curl -sI https://auth.sanasol.ws/patches/darwin/arm64/release/0_to_11.pwr`
-- Should show `302` with `Location` header
-- Test actual download: `curl -sL -o /dev/null -w "%{size_download}" -r 0-1023 <url>`
-
-### Manifest has local paths
-- Regenerate manifest: `node scripts/hytale-mirror.js download` (re-scans files)
-- Re-upload: `node scripts/hytale-mirror.js upload`
-- Verify: entries should only have `{ size: <bytes> }`, no `path` field
-
-### CDN switch not taking effect
-- Check Redis: CDN URL stored in `settings:global`
-- Verify via API: `curl https://auth.sanasol.ws/admin/api/settings/patches-cdn`
-- Manifest is cached for 1 minute in launcher - wait or restart

main.js

@@ -89,7 +89,7 @@ function setDiscordActivity() {
         },
         {
           label: 'Discord',
-          url: 'https://discord.gg/hf2pdc'
+          url: 'https://discord.gg/Fhbb9Yk5WW'
         }
       ]
     });

package.json

@@ -1,6 +1,6 @@
 {
   "name": "hytale-f2p-launcher",
-  "version": "2.3.1",
+  "version": "2.3.2",
   "description": "A modern, cross-platform launcher for Hytale with automatic updates and multi-client support",
   "homepage": "https://github.com/amiayweb/Hytale-F2P",
   "main": "main.js",