fix(v2.2.0): migrate to new Miruro pipe protocol — restore streaming endpoints

The streaming endpoints (/episodes, /sources, /stream, /watch, /download)
returned 500 because the upstream Miruro pipe changed and www.miruro.tv is
now hard-blocked by Cloudflare.

Reverse-engineered the current Miruro frontend contract:
- Request is plain base64url of the JSON payload (no XOR).
- Response obfuscation is now signalled by the x-obfuscated header:
  absent = plain JSON, 1 = base64+gzip, 2 = base64+XOR(PIPE_OBF_KEY)+gzip.

pipe.js now:
- rotates across mirrors (miruro.ru > .to > .bz > .tv), one per retry;
- decodes based on the x-obfuscated header instead of always XOR+gunzip;
- sends full browser sec-fetch/sec-ch-ua headers to pass Cloudflare checks;
- raises maxRetries to 4 and rotates on 403/444.

proxy.js default referer/Origin -> https://www.miruro.to (miruro.tv is dead).

AniList-backed endpoints were already healthy and are unaffected.
Version bumped to 2.2.0 across package.json, server.js, /api/health,
/api/openapi, public/openapi.json. CHANGELOG updated.

CHANGELOG.md

@@ -1,5 +1,36 @@
 # Changelog
 
+## v2.2.0
+### Critical Fix — Miruro Pipe Protocol Migration (Streaming Endpoints Restored)
+
+#### Diagnostic Summary
+- **Full diagnostic sweep** of all live `/api/*` endpoints against `mirurotvapi.vercel.app`
+- **AniList-backed endpoints** (`/search`, `/trending`, `/info`, `/popular`, `/top`, …) — confirmed **all 200/healthy**
+- **Streaming endpoints** (`/episodes`, `/sources`, `/stream`, `/watch`, `/download`) — **all 500**
+- Deep-scanned the Miruro frontend (`miruro.to/.bz/.ru`) bundles + `env2.js` to reverse-engineer the new pipe contract
+
+#### Root Cause (streaming failure)
+1. **Dead data source** — `pipe.js` targeted `https://www.miruro.tv/api/secure/pipe`, which is now hard-blocked by Cloudflare (returns 403 "Sorry, you have been blocked" page).
+2. **Stale decode protocol** — the old `decode()` always did `base64url → XOR(PIPE_OBF_KEY) → gunzip`. Miruro's pipe now **signals the scheme via a response header**:
+   - `x-obfuscated` absent → plain JSON
+   - `x-obfuscated: 1` → `base64url(gzip(json))` (**no XOR**)
+   - `x-obfuscated: 2` → `base64url(XOR(gzip(json)))` with `PIPE_OBF_KEY`
+   - The hard-coded always-XOR decode corrupted the new `:1` payloads.
+
+#### Fixes
+- **`src/helpers/pipe.js`**
+  - New **mirror rotation** list: `miruro.ru` → `miruro.to` → `miruro.bz` → `miruro.tv`, iterating one mirror per retry.
+  - **New header-driven `decodePipeResponse(text, obfHeader)`** supporting plain / scheme-1 / scheme-2.
+  - **Browser-accurate request headers** (UA + `Accept`, `Accept-Language`, full `sec-ch-ua` / `sec-fetch-*` family) to pass Cloudflare bot fingerprinting rather than just UA+Referer.
+  - Request payload reverted to **plain base64url of the JSON** (no XOR on the request) matching the current client.
+  - Subtitle-proxy referer updated to canonical `https://www.miruro.to/`.
+  - Default `maxRetries` bumped 3 → 4 so each mirror gets an attempt; 403/444 now rotate instead of failing.
+- **`api/proxy.js`** — default CDN referer/Origin switched from the dead `miruro.tv` to the canonical `miruro.to`.
+- **Version bump** to `2.2.0` across `package.json`, `server.js` banner, `/api/health`, `/api/openapi`, and `public/openapi.json`.
+
+#### Notes
+- Streaming endpoints depend on Miruro's upstream pipe, which sits behind Cloudflare bot protection and may intermittently rate-limit datacenter egress IPs. The new rotation + browser headers + retry logic maximizes success; AniList endpoints are unaffected and remain fully healthy.
+
 ## v2.1.4
 ### Security Hardening, Bug Fixes, Code Quality Improvements
 

api/proxy.js

@@ -209,7 +209,7 @@ module.exports = async function handler(req, res) {
     const decoded = decodePruUrl(url);
     const isPru = !!decoded;
     const targetUrl = decoded ? decoded.url : url;
-    const targetReferer = decoded ? decoded.referer : referer || "https://www.miruro.tv/";
+    const targetReferer = decoded ? decoded.referer : referer || "https://www.miruro.to/";
 
     let fetchUrl;
     let fetchHeaders;
@@ -219,8 +219,8 @@ module.exports = async function handler(req, res) {
       fetchUrl = encodeForPru(targetUrl, targetReferer);
       fetchHeaders = {
         "User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/137.0.0.0 Safari/537.36",
-        Referer: "https://www.miruro.tv/",
-        Origin: "https://www.miruro.tv",
+        Referer: "https://www.miruro.to/",
+        Origin: "https://www.miruro.to",
       };
     } else {
       fetchUrl = targetUrl;

package.json

@@ -1,7 +1,7 @@
 {
   "name": "miruro-api",
-  "version": "2.1.4",
-  "description": "RESTful API for miruro.tv - Anime streaming data powered by AniList GraphQL and Miruro streaming providers",
+  "version": "2.2.0",
+  "description": "RESTful API for Miruro - Anime streaming data powered by AniList GraphQL and Miruro streaming providers",
   "main": "server.js",
   "scripts": {
     "start": "node server.js",

public/openapi.json

@@ -3,7 +3,7 @@
   "info": {
     "title": "MiruroAPI",
     "description": "Free RESTful API for anime streaming data. Powered by AniList GraphQL and Miruro streaming providers.",
-    "version": "2.1.4",
+    "version": "2.2.0",
     "contact": {
       "name": "Shineii86",
       "url": "https://github.com/Shineii86/MiruroAPI"

server.js

@@ -301,7 +301,7 @@ app.use((req, res) => {
 
 if (!process.env.VERCEL) {
   app.listen(PORT, () => {
-    console.log(`[${new Date().toISOString()}] MiruroAPI v2.1.4 listening at ${PORT}`);
+    console.log(`[${new Date().toISOString()}] MiruroAPI v2.2.0 listening at ${PORT}`);
   });
 }
 

src/helpers/pipe.js

@@ -27,23 +27,57 @@ const { getCached, setCache } = require("./cache");
 // ══════════════════════════════════════════════════════════════
 
 /**
- * Miruro's secure pipe endpoint URL.
- * All streaming requests go through this base64+gzip encoded tunnel.
+ * Miruro's secure pipe endpoint path (same-origin relative on every mirror).
+ * The pipe tunnel uses base64+gzip (and optionally XOR) encoded request/response.
  *
  * @type {string}
  */
-const MIRURO_PIPE_URL = "https://www.miruro.tv/api/secure/pipe";
+const PIPE_PATH = "/api/secure/pipe";
 
 /**
- * Request headers mimicking a browser.
- * Referer is required for the pipe endpoint to accept requests.
+ * Ordered list of Miruro mirror origins that host the secure pipe endpoint.
+ * Miruro rotates domains frequently and sits behind Cloudflare bot protection,
+ * so we try them in order and rotate to the next on any block/reset.
+ * `.ru` currently serves the pipe with the lightest Cloudflare friction;
+ * `.to` is the canonical origin referenced in CORS headers.
+ *
+ * @type {string[]}
+ */
+const MIRURO_ORIGINS = [
+  "https://www.miruro.ru",
+  "https://www.miruro.to",
+  "https://www.miruro.bz",
+  "https://www.miruro.tv",
+];
+
+/**
+ * Canonical origin used for the Referer/Origin headers (matches the
+ * `access-control-allow-origin` the pipe returns).
+ *
+ * @type {string}
+ */
+const CANONICAL_ORIGIN = "https://www.miruro.to";
+
+/**
+ * Request headers mimicking a real browser. The pipe endpoint sits behind
+ * Cloudflare, which inspects UA + sec-fetch + Accept headers, so these must
+ * look like a genuine same-origin browser request.
  *
  * @type {object}
  */
 const HEADERS = {
-  "User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/137.0.0.0 Safari/537.36",
-  Referer: "https://www.miruro.tv/",
-  Origin: "https://www.miruro.tv",
+  "User-Agent":
+    "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/137.0.0.0 Safari/537.36",
+  Accept: "*/*",
+  "Accept-Language": "en-US,en;q=0.9",
+  "sec-ch-ua": '"Chromium";v="137", "Not?A_Brand";v="24"',
+  "sec-ch-ua-mobile": "?0",
+  "sec-ch-ua-platform": '"Windows"',
+  "sec-fetch-dest": "empty",
+  "sec-fetch-mode": "cors",
+  "sec-fetch-site": "same-origin",
+  Referer: CANONICAL_ORIGIN + "/",
+  Origin: CANONICAL_ORIGIN,
 };
 
 // ══════════════════════════════════════════════════════════════
@@ -66,10 +100,11 @@ const encodePipeRequest = (payload) => {
   return Buffer.from(json).toString("base64url");
 };
 
-// ---- FEATURE: Decode base64+gzip pipe response ----
+// ---- FEATURE: XOR obfuscation key for pipe responses (x-obfuscated: 2) ----
 /**
- * Decodes a pipe response from base64url + XOR obfuscation + gzip format.
- * The Miruro pipe returns all responses XORed with PIPE_OBF_KEY then gzipped.
+ * XOR key applied to pipe responses when the server returns the
+ * `x-obfuscated: 2` header. Loaded from PIPE_OBF_KEY with hardcoded fallback.
+ * Key length: 16 bytes (32 hex chars).
  *
  * @type {Buffer}
  */
@@ -78,32 +113,54 @@ const PIPE_OBF_KEY = Buffer.from(
   "hex"
 );
 
+// ---- FEATURE: Decode pipe response (header-driven obfuscation scheme) ----
 /**
- * @param {string} encodedStr - The base64url-encoded response
+ * Decodes a pipe response based on the `x-obfuscated` response header.
+ *
+ * Obfuscation schemes (matches the Miruro frontend's secure client):
+ *   - no header / falsy  → body is plain JSON text
+ *   - "1"                → body is base64url( gzip( json ) )   (no XOR)
+ *   - "2"                → body is base64url( XOR( gzip( json ) ) ) with PIPE_OBF_KEY
+ *
+ * @param {string} encodedStr - The raw response body text
+ * @param {string|null} [obfHeader] - Value of the `x-obfuscated` response header
  * @returns {object} Decoded JSON object
  * @throws {Error} If decoding or decompression fails
  */
-const decodePipeResponse = (encodedStr) => {
+const decodePipeResponse = (encodedStr, obfHeader = null) => {
   try {
-    const padded = encodedStr + "=".repeat((4 - (encodedStr.length % 4)) % 4);
+    // NOTE: No obfuscation header → the body is plain JSON
+    if (!obfHeader) return JSON.parse(encodedStr);
+
+    const padded =
+      encodedStr + "=".repeat((4 - (encodedStr.length % 4)) % 4);
     const raw = Buffer.from(padded, "base64url");
-    // NOTE: XOR decode with obfuscation key before gzip decompression
+
+    // NOTE: Scheme "2" XORs the base64-decoded bytes with PIPE_OBF_KEY before gunzip
+    let bytes = raw;
+    if (String(obfHeader) === "2") {
       const xored = Buffer.alloc(raw.length);
       for (let i = 0; i < raw.length; i++) {
         xored[i] = raw[i] ^ PIPE_OBF_KEY[i % PIPE_OBF_KEY.length];
       }
-    const decompressed = zlib.gunzipSync(xored);
+      bytes = xored;
+    }
+
+    const decompressed = zlib.gunzipSync(bytes);
     return JSON.parse(decompressed.toString("utf-8"));
   } catch (e) {
     throw new Error("Failed to decode pipe response: " + e.message);
   }
 };
 
-// ---- FEATURE: Pipe request with retry and exponential backoff ----
+// ---- FEATURE: Pipe request with mirror rotation + exponential backoff ----
 /**
- * Makes a pipe API request with retry logic and exponential backoff.
- * The pipe endpoint intermittently rate-limits (444/connection reset) from datacenter IPs.
- * Retries up to 3 times with increasing delays (1s, 2s, 4s).
+ * Makes a pipe API request, rotating across Miruro mirrors on block/reset
+ * and retrying with exponential backoff.
+ *
+ * Miruro's pipe sits behind Cloudflare bot protection which intermittently
+ * returns 403/444 or resets connections from datacenter IPs, so each retry
+ * targets the next mirror origin and honors a short backoff.
  *
  * @param {string} path - Pipe path ("episodes" or "sources")
  * @param {object} query - Query parameters for the pipe
@@ -111,28 +168,39 @@ const decodePipeResponse = (encodedStr) => {
  * @returns {Promise<object>} Decoded pipe response
  * @throws {Error} If all retries fail
  */
-const pipeRequest = async (path, query, maxRetries = 3) => {
-  const payload = { path, method: "GET", query, body: null, version: "0.2.0" };
+const pipeRequest = async (path, query, maxRetries = 4) => {
+  const payload = { path, method: "GET", query, body: null };
   const encodedReq = encodePipeRequest(payload);
 
   let lastError;
   for (let attempt = 0; attempt < maxRetries; attempt++) {
+    // NOTE: Rotate mirror on every attempt to spread Cloudflare pressure
+    const origin = MIRURO_ORIGINS[attempt % MIRURO_ORIGINS.length];
+
     try {
-      const res = await axios.get(`${MIRURO_PIPE_URL}?e=${encodedReq}`, {
+      const res = await axios.get(`${origin}${PIPE_PATH}?e=${encodedReq}`, {
         headers: HEADERS,
         timeout: 20000,
         maxRedirects: 5,
       });
 
       if (res.status !== 200) throw new Error(`Pipe request failed: ${res.status}`);
-      return decodePipeResponse(res.text || res.data);
+
+      // NOTE: Decode using the server's x-obfuscated scheme header
+      const obf = res.headers["x-obfuscated"];
+      return decodePipeResponse(res.data, obf);
     } catch (e) {
       lastError = e;
       const status = e.response?.status;
-      // NOTE: Don't retry on non-retryable errors (4xx except 444)
-      if (status && status >= 400 && status < 500 && status !== 444) {
+
+      // NOTE: Rotate mirror on Cloudflare blocks / resets (403, 444, conn reset).
+      // 4xx (except 444) are not retryable on the same mirror, but rotating
+      // to another mirror may still succeed, so we only hard-fail on 4xx
+      // when we've exhausted all mirrors.
+      if (status && status >= 400 && status < 500 && status !== 444 && status !== 403) {
         throw new Error(`Pipe request failed with status ${status}`);
       }
+
       // NOTE: Exponential backoff: 1s, 2s, 4s
       if (attempt < maxRetries - 1) {
         const delay = Math.pow(2, attempt) * 1000;
@@ -195,7 +263,7 @@ const proxySubtitles = (sources) => {
   sources.subtitles = sources.subtitles.map((s) => {
     const raw = s.url || s.file;
     if (!raw || !raw.startsWith("http")) return s;
-    const proxied = proxyUrl(raw, "https://www.miruro.tv/");
+    const proxied = proxyUrl(raw, "https://www.miruro.to/");
     return { ...s, url: proxied, file: proxied };
   });
   return sources;

src/routes/apiRoutes.js

@@ -1123,7 +1123,7 @@ const createApiRoutes = (jsonResponse, jsonError, startTime) => {
       success: true,
       results: {
         status: "healthy",
-        version: "2.1.4",
+        version: "2.2.0",
         uptime: `${hours}h ${minutes}m ${seconds}s`,
         uptimeSeconds: uptime,
         timestamp: new Date().toISOString(),
@@ -1178,7 +1178,7 @@ const createApiRoutes = (jsonResponse, jsonError, startTime) => {
       info: {
         title: "MiruroAPI",
         description: "Free REST API for anime streaming data — AniList GraphQL + Miruro streaming providers",
-        version: "2.1.4",
+        version: "2.2.0",
         contact: { name: "Shineii86", url: "https://github.com/Shineii86/MiruroAPI" },
       },
       servers: [