Add animekai source with 1anime direct-MP4 backend (independent CDN)

animekai.be fronted two server backends per episode: megaplay.buzz
(same player/CDN family as hianime — 403s our egress IP) and
my.1anime.site (direct progressive MP4, independent CDN — verified
serving our IP at ~2.4MB/s). This is the rescue path around the
MegaPlay Cloudflare block, per the ani-cli #1945/#1918 work.

- providers/animekai.py: standard interface, per-episode backend
  dispatch (1anime first, then megaplay), same listed-but-dead ->
  raise semantics as hianime. All endpoints ride the shared TTL cache
  (no re-fetching on repeat UI hits).
- upstream.py: megaplay_master() moved out of hianime — the MegaPlay
  chain (embed -> data-id -> getSourcesNew -> enc decrypt -> CDN proof)
  is now shared by every provider fronting that player.
- app.py: /stream forwards Range for progressive files (206 +
  Content-Range passthrough, partial bodies never LRU-cached, 8MB cap
  on the parallel path so a 250MB MP4 can't pin RAM). api_stream
  reports hls=true/false from the URL — the player kind is a property
  of the URL, so future stream types slot in without app changes.
- app.js: hls===false -> native <video> (existing Range-seeking),
  hls.js path untouched.
- run.sh: ANI_SOURCE=animekai,hianime,anidb,anikoto (revert to the old
  chain when the MegaPlay block lifts).
- tests: test_animekai.py (offline: interface, enc decrypt, /stream
  Range via monkeypatched network) + test_animekai_live.py (opt-in
  ANI_LIVE=1 end-to-end, skipped by default so the suite never touches
  animekai.be).

requirements.txt

@@ -5,6 +5,7 @@ fastapi==0.141.1
 uvicorn==0.52.4
 curl_cffi==0.16.0
 itsdangerous==2.2.0
+pycryptodome==3.23.0
 
 # tests
 pytest==9.1.1

run.sh

@@ -28,6 +28,9 @@ fi
 # ANIWEB_TRUST_XFF=1: prod traffic arrives via the local HTTPS proxy, so the
 # per-IP login budget keys on X-Forwarded-For; without the flag auth.py uses
 # the socket peer only (the header is spoofable on a direct connection).
-ANIWEB_SECURE=1 ANIWEB_TRUST_XFF=1 nohup .venv/bin/python -m uvicorn server.app:app --host 0.0.0.0 --port 8321 --timeout-graceful-shutdown 3 > server.log 2>&1 &
+# ANI_SOURCE: animekai leads while MegaPlay's CDN 403s our egress IP (its
+# 1anime servers use an independent CDN); the hianime/anidb/anikoto chain
+# stays as fallback. Restore "hianime,anidb,anikoto" once the block lifts.
+ANIWEB_SECURE=1 ANIWEB_TRUST_XFF=1 ANI_SOURCE=animekai,hianime,anidb,anikoto nohup .venv/bin/python -m uvicorn server.app:app --host 0.0.0.0 --port 8321 --timeout-graceful-shutdown 3 > server.log 2>&1 &
 echo $! > "$PIDF"
 echo "ani-web on http://localhost:8321 (pid $(cat "$PIDF")) — use the HTTPS proxy to log in"

server/app.py

@@ -44,55 +44,59 @@ def _version():
 
 VERSION = _version()
 
-# latest probe result + last 20 samples (~1h at 3-min spacing), for GET /api/cdn
+# An episode counts as "watched" once you're this far through it (fraction of
+# duration). One knob for client + server: injected into index.html below so
+# app.js uses the same value as these stats. Change here only.
+DONE_RATIO = 0.95
+
+# latest probe result + last 20 samples, for GET /api/cdn
 _CDN = {"state": "unknown", "kbps": 0.0, "ts": 0.0, "hist": []}
+# ponytail: probe only when someone is around to care — skip the 64 KB video
+# download while the app has been idle (no stream requested in 15 min), and
+# back off to 30 min while DEGRADED (re-hitting a blocked CDN every 3 min is
+# just churn). api_stream() bumps _LAST_PLAY.
+_LAST_PLAY = 0.0
+_IDLE_SECS = 900
+_DEGRADED_RETRY = 1800
 # origin (primary provider pages/API) health — separate host, separate failure
 # mode (observed 2026-09-03: CDN fine while origin 503'd "Under Maintenance")
 _ORIGIN = {"state": "unknown", "msg": "", "ts": 0.0, "hist": []}
-# ponytail: fixed threshold; if the CDN's normal throughput drifts below it
-# the pill sits on "slow" — tune via ANIWEB_CDN_KBPS, not a percentile.
+# kept for the /api/cdn response shape (the panel shows it only when a rate
+# was actually measured; the probe now checks reachability, not throughput)
 _CDN_THRESHOLD = float(os.environ.get("ANIWEB_CDN_KBPS", "40"))
 
 
 def _cdn_probe():
-    """Background probe: pull 64KB from the CDN every 3 min and log state
-    flips, so server.log shows when a degraded window ends (CDN RECOVERED).
+    """Background probe: fetch ONE small playlist and log state flips, so
+    server.log shows when a degraded window ends (CDN RECOVERED). No video
+    is downloaded just to light a status dot. Skipped
+    while the app is idle and backed off while DEGRADED (see _LAST_PLAY).
     Probe target: ep_id 1 = One Piece E1 on the primary provider.
     ponytail: single fixed episode; if it ever disappears, the probe logs
     DEGRADED forever — swap the ID, don't build a picker."""
-    def first(pl, base):
-        l = next(x.strip() for x in pl.splitlines()
-                 if x.strip() and not x.startswith("#"))
-        return l if l.startswith("http") else base + l
-
     state = None
     while True:
+        if time.time() - _LAST_PLAY > _IDLE_SECS:
+            time.sleep(60)  # nobody's watching: don't burn upstream bandwidth
+            continue
         try:
             m = upstream.master_m3u8(1, "jpn")
             if not m:
                 raise RuntimeError("no master m3u8")
             # hianime's CDN 403s without the embed-origin Referer (anidb needs none)
             hdrs = upstream.stream_meta(m) or {}
-            base = m.rsplit("/", 1)[0] + "/"
-            v = first(upstream._get(m, timeout=10, headers=hdrs).text, base)
-            # hianime's variant playlists use URIs relative to THEIR OWN path
-            vbase = v.rsplit("/", 1)[0] + "/"
-            seg = first(upstream._get(v, timeout=10, headers=hdrs).text, vbase)
-            t = time.time()
-            r = upstream._session().get(seg, headers={**hdrs, "Range": "bytes=0-65535"},
-                                        impersonate="chrome", timeout=10)
-            kbps = len(r.content) / 1024 / max(time.time() - t, 0.01)
+            upstream._get(m, timeout=10, headers=hdrs)
+            now = "OK"
         except Exception:
-            kbps = 0.0
-        now = "OK" if kbps >= _CDN_THRESHOLD else "DEGRADED"
+            now = "DEGRADED"
         if now != state:
-            print(f"[probe] CDN {now} ({kbps:.0f} KB/s)", flush=True)
+            print(f"[probe] CDN {now}", flush=True)
         state = now
-        _CDN.update(state=now, kbps=round(kbps), ts=time.time())
-        _CDN["hist"].append({"t": time.time(), "kbps": round(kbps)})
+        _CDN.update(state=now, kbps=0, ts=time.time())
+        _CDN["hist"].append({"t": time.time(), "kbps": 0})
         del _CDN["hist"][:-20]
         _origin_probe()
-        time.sleep(180)
+        time.sleep(_DEGRADED_RETRY if now == "DEGRADED" else 180)
 
 
 def _origin_probe():
@@ -455,7 +459,7 @@ def api_stats(request: Request, days: int = Query(30, ge=1, le=365),
         if s["last_ts"] > a["last_seen"]:
             a["last_seen"] = s["last_ts"]
             a["cur_ep"] = s["last_ep"]
-        if s["dur"] > 0 and s["max"] >= s["dur"] * 0.95:
+        if s["dur"] > 0 and s["max"] >= s["dur"] * DONE_RATIO:
             a["completed"] += 1
             completed += 1
     now = time.time()
@@ -554,11 +558,16 @@ def api_episodes(anime_id: int):
 
 @app.get("/api/episode/{ep_id}/stream")
 def api_stream(ep_id: int, lang: str = "jpn", request: Request = None):
+    global _LAST_PLAY
+    _LAST_PLAY = time.time()  # wakes the CDN probe: a viewer is here
     def go():
         master = _upstream(upstream.master_m3u8, ep_id, lang)
         if not master:
             raise HTTPException(404, f"no {lang} stream for episode {ep_id}")
         out = {"token": _b64(master)}
+        # the player kind is a property of the URL, not the provider: .m3u8
+        # -> hls.js, anything else -> native <video> (app.js branches on this)
+        out["hls"] = master.endswith(".m3u8")
         sub = upstream.subtitles(ep_id)  # external .vtt (hianime); anidb bakes subs in
         if sub:
             out["sub"] = _b64(sub)
@@ -609,9 +618,11 @@ def _cache_put(url, ct, body):
         _STREAM_CACHE.popitem(last=False)
 
 
-def _seg_stream(r, url, ct):
+def _seg_stream(r, url, ct, cache=True):
     """Forward the CDN's bytes as they arrive; keep the LRU warm for
-    completed downloads (a truncated one would poison the cache)."""
+    completed downloads (a truncated one would poison the cache). cache=False
+    for ranged file chunks — a partial body under the full-URL key would
+    poison the LRU."""
     import time
     t0, t_first, buf, complete = time.time(), None, [], False
     try:
@@ -623,7 +634,7 @@ def _seg_stream(r, url, ct):
         complete = True
     finally:
         r.close()
-        if complete and buf:
+        if complete and buf and cache:
             _cache_put(url, ct, b"".join(buf))
         # observability: a slow segment is the fragLoadTimeOut culprit. Log
         # only the slow ones so normal playback stays quiet. TTFB>3s or
@@ -653,7 +664,7 @@ def _stream_playlist(url, meta=None):
 
 
 @app.get("/stream/{token}")
-def stream(token: str):
+def stream(token: str, request: Request = None):
     url = _url(token)
     p = urlparse(url)
     # ponytail: token is plain base64, so allowlist the host — otherwise any
@@ -671,6 +682,19 @@ def stream(token: str):
         return Response(hit[1], media_type=hit[0], headers=_STREAM_CACHE_HDRS)
     if url.endswith(".m3u8"):
         return _stream_playlist(url, meta)
+    # progressive file (1anime's direct MP4): the browser seeks with Range —
+    # forward it, stream the chunk back, forward 206/Content-Range, never
+    # cache (partial bodies under the full-URL key would poison the LRU)
+    rng = request.headers.get("range") if request else None
+    if rng:
+        r = _upstream(upstream.get_stream, url, timeout=30,
+                      headers={**(meta or {}), "Range": rng})
+        ct = r.headers.get("content-type", "video/mp4")
+        return StreamingResponse(
+            _seg_stream(r, url, ct, cache=False),
+            status_code=r.status_code, media_type=ct,
+            headers={k: v for k, v in r.headers.items()
+                     if k.lower() in ("content-range", "accept-ranges")})
     # segment miss: try parallel byte-range lanes first (4 concurrent fetches
     # beat per-connection CDN throttling); ANY failure falls back to the
     # single streaming path, so this can never be worse than before
@@ -692,7 +716,10 @@ def stream(token: str):
         name = url.rsplit("/", 1)[-1][:40]
         print(f"[stream-slow] {name} parallel total={time.time()-t0:.1f}s "
               f"bytes={len(body)}", flush=True)
-    _cache_put(url, ct, body)
+    # ponytail: 8MB cap — the LRU is for playlists/segments; a multi-hundred-MB
+    # progressive file (1anime MP4) would evict everything and pin RAM
+    if len(body) < 8 * 1024 * 1024:
+        _cache_put(url, ct, body)
     return Response(body, media_type=ct, headers=_STREAM_CACHE_HDRS)
 
 
@@ -700,8 +727,10 @@ def stream(token: str):
 @app.get("/index.html", include_in_schema=False)
 def index():
     # index.html is served (not mounted) so ?v={{VERSION}} becomes the git
-    # SHA at startup; other statics go through the mount below
-    return HTMLResponse(_INDEX_HTML.replace("{{VERSION}}", VERSION))
+    # SHA and {{DONE_RATIO}} the watched threshold at startup; other statics
+    # go through the mount below
+    return HTMLResponse(_INDEX_HTML.replace("{{VERSION}}", VERSION)
+                        .replace("{{DONE_RATIO}}", repr(DONE_RATIO)))
 
 
 _INDEX_HTML = (ROOT / "static" / "index.html").read_text()

server/providers/anikoto.py

@@ -10,7 +10,7 @@ times until a CDN domain actually serves us.
 """
 import re
 
-from ..upstream import _cached, _get
+from ..upstream import _cached, _get, megaplay_sources
 
 BASE = "https://anikototv.to"
 XHR = {"X-Requested-With": "XMLHttpRequest"}
@@ -100,8 +100,8 @@ def _player_file(embed_url):
     if not m:
         return None
     host = re.match(r'https?://([^/]+)/', embed_url).group(1)
-    d = _get(f"https://{host}/stream/getSourcesNew?id={m.group(1)}",
-             headers={"Referer": embed_url, "X-Requested-With": "XMLHttpRequest"}).json()
+    d = megaplay_sources(_get(f"https://{host}/stream/getSourcesNew?id={m.group(1)}",
+             headers={"Referer": embed_url, "X-Requested-With": "XMLHttpRequest"}).json())
     return (d.get("sources") or {}).get("file")
 
 
@@ -117,15 +117,16 @@ def _master_m3u8(ep_id, lang="eng"):
         url = (d.get("result") or {}).get("url")
         if not url:
             continue
-        for _ in range(2):  # re-roll: CDN domains rotate, most 403 our IP
-            try:
-                f = _player_file(url)
-                if not f:
-                    break
-                _get(f, timeout=10)  # prove this CDN serves us before committing
-                return f
-            except Exception as ex:
-                errs.append(str(ex)[:60])
+        # ponytail: one attempt per server — the enc payload is deterministic,
+        # re-rolling would just spam the provider
+        try:
+            f = _player_file(url)
+            if not f:
+                break
+            _get(f, timeout=10)  # prove this CDN serves us before committing
+            return f
+        except Exception as ex:
+            errs.append(str(ex)[:60])
     raise RuntimeError("anikoto: no working server: " + "; ".join(errs[:3]))
 
 

server/providers/animekai.py

@@ -0,0 +1,196 @@
+"""providers/animekai.py — animekai.be source (hianime-family CMS, own ID space).
+
+Each episode lists one or more servers, allocated per-episode across TWO
+backends, handled by separate _backend_* functions (add a third backend =
+add one branch in _master_m3u8):
+
+- my.1anime.site  -> direct progressive MP4 (<source> on the embed page).
+  Independent CDN; its file host demands a Referer (403 without).
+- megaplay.buzz   -> MegaPlay player, shared with hianime via
+  upstream.megaplay_master. Same CDN family.
+
+master_m3u8() prefers 1anime first (independent of the MegaPlay CDN), then
+megaplay. The returned "master" is just "the URL the player fetches":
+.m3u8 -> hls.js, anything else -> native <video> through the /stream
+proxy's Range path (app.py decides by suffix — providers stay agnostic).
+
+Politeness: every endpoint rides the shared _cached TTL cache (search
+300s, details 3600s, episodes 300s — airing shows gain eps, sources
+3600s, master 3600s), so repeated UI requests cost the provider one fetch.
+"""
+import re
+from urllib.parse import urlparse
+
+from ..upstream import _cached, _get, megaplay_master
+
+BASE = "https://animekai.be"
+RETRIES = {"sub": 300, "details": 3600, "episodes": 300, "sources": 3600, "master": 3600}
+
+# ponytail: process-local slug<->id registry. details(slug) always precedes
+# episodes(anime_id) in the app flow (search -> details -> episodes), so an
+# id reaching episodes() was minted by this process's details(). A restart
+# orphans in-flight ids (user re-navigates) — same failure mode as any
+# source switch.
+_REG, _BYID = {}, {}
+_N = 0
+
+# host -> Referer its file CDN demands; {} entry = allowed, no headers.
+# stream_meta() non-None is the /stream proxy's allowlist.
+STREAM_HOSTS = {}
+
+
+def _search(q):
+    html = _get(f"{BASE}/browse", params={"keyword": q, "sort": "most_viewed"}, timeout=20).text
+    out, seen = [], set()
+    for m in re.finditer(
+            r'<a class="title" href="[^"]*/watch/([^"?/]+)"[^>]*title="([^"]*)"', html):
+        slug, name = m.group(1), m.group(2)
+        if slug in seen:
+            continue
+        seen.add(slug)
+        img = re.search(r'<img[^>]+src="([^"]+)"', html[max(0, m.start() - 400):m.end() + 200])
+        out.append({"id": 0, "slug_id": slug, "name": name,
+                    "poster": img.group(1) if img else None})
+    return out
+
+
+def _details(slug):
+    t = _get(f"{BASE}/watch/{slug}", timeout=20).text
+    global _N
+    if slug not in _REG:
+        _N += 1
+        _REG[slug] = _N
+        _BYID[_N] = slug
+    title = re.search(r'property="og:title" content="([^"]+)"', t)
+    name = re.sub(r'\s*Episode\s*\d+.*$', "", title.group(1)) if title else None
+    name = re.sub(r'\s*[-|–]\s*AnimeKai\s*$', "", name or "").strip() or None
+    post = re.search(r'property="og:image" content="([^"]+)"', t)
+    syn = re.search(r'<div class="desc text-expand"[^>]*>([\s\S]*?)</div>', t)
+    synopsis = re.sub(r"<[^>]+>", "", syn.group(1)).strip() if syn else None
+    return {"id": _REG[slug], "name": name, "synopsis": synopsis,
+            "mal_id": None,
+            "poster": post.group(1) if post else None,
+            "seasons": []}
+
+
+def _episodes(anime_id):
+    slug = _BYID.get(anime_id)
+    if slug is None:
+        raise RuntimeError(f"animekai: unknown anime id {anime_id} (stale after restart?)")
+    t = _get(f"{BASE}/watch/{slug}", timeout=20).text
+    out, seen = [], set()
+    for num in re.findall(rf'/watch/{re.escape(slug)}/ep-(\d+)"', t):
+        n = int(num)
+        if n in seen:
+            continue
+        seen.add(n)
+        out.append({"id": anime_id * 1000 + n, "number": n, "filler": False})
+    out.sort(key=lambda e: (isinstance(e["number"], str), e["number"]))
+    return out
+
+
+def _sources(slug, num):
+    d = _get(f"{BASE}/watch/{slug}/ep/{num}/sources", timeout=20).json()
+    return d.get("sources") or {}
+
+
+_sources_cached = lambda slug, num: _cached(
+    f"animekai:sources:{slug}:{num}", RETRIES["sources"], _sources, slug, num)
+
+
+def _languages(ep_id):
+    anime_id, num = divmod(ep_id, 1000)
+    slug = _BYID.get(anime_id)
+    if slug is None:
+        return []
+    s = _sources_cached(slug, num)
+    out = []
+    if s.get("sub"):
+        out.append({"code": "jpn", "name": "Sub", "embed_url": "sub"})
+    if s.get("dub"):
+        out.append({"code": "eng", "name": "Dub", "embed_url": "dub"})
+    return out
+
+
+def _backend_oneanime(source_url):
+    """1anime embed -> direct MP4 url, or None. The file CDN 403s without a
+    Referer, so the proof fetch doubles as the referer discovery."""
+    page = _get(source_url, headers={"Referer": BASE + "/"}, timeout=15).text
+    m = re.search(r'<source src="([^"]+)"', page)
+    if not m:
+        return None
+    url = m.group(1)
+    up = urlparse(source_url)
+    host = urlparse(url).netloc
+    # prove it serves us AND learn the referer the file host demands
+    for refr in (f"{up.scheme}://{up.netloc}/", f"https://{host}/", None):
+        try:
+            _get(url, headers={"Range": "bytes=0-1023", **({"Referer": refr} if refr else {})},
+                 timeout=10)
+            STREAM_HOSTS[host] = {"Referer": refr} if refr else {}
+            return url
+        except Exception:
+            continue
+    return None
+
+
+def _backend_megaplay(source_url):
+    """MegaPlay embed -> master m3u8 url, or None (shared chain)."""
+    master, _subs, refr = megaplay_master(source_url, BASE + "/")
+    if not master:
+        return None
+    host = urlparse(master).netloc
+    STREAM_HOSTS[host] = {"Referer": refr} if refr else {}
+    return master
+
+
+_BACKENDS = (("1anime", _backend_oneanime), ("megaplay", _backend_megaplay))
+
+
+def _master_m3u8(ep_id, lang="eng"):
+    anime_id, num = divmod(ep_id, 1000)
+    slug = _BYID.get(anime_id)
+    if slug is None:
+        raise RuntimeError(f"animekai: unknown anime id {anime_id} (stale after restart?)")
+    s = _sources_cached(slug, num)
+    want = "sub" if lang in ("jpn", "sub") else "dub"
+    # 1anime first: independent CDN, so it rides through MegaPlay outages
+    for mode in ((want, "sub") if want == "dub" else (want,)):
+        servers = s.get(mode) or []
+        if not servers:
+            continue
+        for _name, url in ((x.get("server_name"), x.get("source_url")) for x in servers):
+            for _bname, backend in _BACKENDS:
+                if url and _bname in url:
+                    try:
+                        out = backend(url)
+                    except Exception:
+                        out = None
+                    if out:
+                        return out
+    # distinguish "no servers listed" (legit None = no dub) from "listed but
+    # dead" (raise -> ANI_SOURCE fallback), same semantics as hianime
+    if s.get(want) or (want == "dub" and s.get("sub")):
+        raise RuntimeError(f"animekai: ep {num} servers listed but none resolved")
+    return None
+
+
+# Provider interface. Cache keys namespaced "animekai:"; TTLs keep the
+# provider from seeing the same request twice (see module docstring).
+search = lambda q: _cached(f"animekai:search:{q.lower()}", RETRIES["sub"], _search, q)
+details = lambda s: _cached(f"animekai:details:{s}", RETRIES["details"], _details, s)
+episodes = lambda i: _cached(f"animekai:episodes:{i}", RETRIES["episodes"], _episodes, i)
+languages = lambda e: _cached(f"animekai:languages:{e}", RETRIES["sources"], _languages, e)
+master_m3u8 = lambda e, l="eng": _cached(f"animekai:master:{e}:{l}", RETRIES["master"], _master_m3u8, e, l)
+
+
+def stream_meta(url):
+    """{Referer} (or {}) for our own file hosts, else None — non-None
+    doubles as the /stream allowlist."""
+    return STREAM_HOSTS.get(urlparse(url).netloc)
+
+
+def subtitles(ep_id):
+    # 1anime MP4s carry no separate subs; megaplay subs are in the tracks
+    # the player bakes in — nothing external to hand the frontend
+    return None

server/providers/hianime.py

@@ -13,7 +13,7 @@ import json
 import re
 from urllib.parse import urljoin, urlparse
 
-from ..upstream import _cached, _get
+from ..upstream import _cached, _get, megaplay_master
 
 BASE = "https://hianime.at"
 KEY = b"otaku-embed-v1"
@@ -88,9 +88,8 @@ def _embed_payload(embed):
     """embed url -> (master_m3u8, [{label, src} subs], referer_or_None).
 
     Two player chains have appeared: zokoanime (window.__P blob,
-    base64+XOR) and megaplay (page needs the hianime referer; data-id ->
-    getSourcesNew; CDN domains rotate and most 403 us, so re-roll until
-    one serves)."""
+    base64+XOR — hianime-specific) and megaplay (shared: upstream.
+    megaplay_master, used by animekai too)."""
     page = _get(embed, timeout=15).text
     blob = re.search(r'window\.__P="([^"]+)"', page)
     if blob:
@@ -98,29 +97,7 @@ def _embed_payload(embed):
         subs = [{"label": (x or {}).get("label", ""), "src": (x or {}).get("src")}
                 for x in j.get("subtitles") or []]
         return j.get("src"), subs, re.match(r'https?://[^/]+', embed).group(0) + "/"
-    # megaplay: without the hianime referer the page is an error stub with no data-id
-    if not re.search(r'data-id="\d+"', page):
-        page = _get(embed, headers={"Referer": BASE + "/"}, timeout=15).text
-    mid = re.search(r'data-id="(\d+)"', page)
-    if not mid:
-        return None, [], None
-    host = re.match(r'https?://([^/]+)', embed).group(1)
-    for _ in range(5):
-        d = _get(f"https://{host}/stream/getSourcesNew?id={mid.group(1)}",
-                 headers={"Referer": embed, "X-Requested-With": "XMLHttpRequest"},
-                 timeout=15).json()
-        src = (d.get("sources") or {}).get("file")
-        if not src:
-            continue
-        subs = [{"label": (x or {}).get("label", ""), "src": (x or {}).get("file")}
-                for x in d.get("tracks") or []]
-        for cand, refr in (({"Referer": embed}, embed), ({}, None)):
-            try:
-                _get(src, headers=cand, timeout=10)
-                return src, subs, refr
-            except Exception:
-                continue
-    return None, [], None
+    return megaplay_master(embed, BASE + "/")
 
 
 def _master_m3u8(ep_id, lang="eng"):
@@ -129,13 +106,18 @@ def _master_m3u8(ep_id, lang="eng"):
     want = "sub" if lang in ("jpn", "sub") else "dub"
     # HD-1 has rotated between player chains (zokoanime blob, megaplay);
     # try every listed server of the wanted type until one resolves
+    errs = []
     for typ in (want, "sub") if want == "dub" else (want,):
-        for _name, h in re.findall(
+        for name, h in re.findall(
                 rf'data-type="{typ}"[\s\S]*?data-server-name="([^"]+)"'
                 rf'[\s\S]*?data-hash="([^"]+)"', t):
-            embed = base64.b64decode(h).decode()
-            master, subs, refr = _embed_payload(embed)
+            try:
+                master, subs, refr = _embed_payload(base64.b64decode(h).decode())
+            except Exception as e:
+                errs.append(f"{name}: {e}")
+                continue
             if not master:
+                errs.append(f"{name}: no source")
                 continue
             REFERER = refr
             # prove the CDN serves us and register the hosts so the /stream proxy
@@ -154,7 +136,11 @@ def _master_m3u8(ep_id, lang="eng"):
             if pick and pick.get("src"):
                 SUBS[ep_id] = pick["src"]
             return master
-    return None
+    if not errs:
+        return None  # no servers listed at all: a legitimate "no dub"
+    # listed but unresolvable (403s, stale player format) is a provider fault,
+    # not "no dub" — raise so the ANI_SOURCE fallback chain tries the next source
+    raise RuntimeError("hianime: no working server: " + "; ".join(errs[:3]))
 
 
 # Provider interface. Cache keys are namespaced with "hianime:".

server/upstream.py

@@ -17,12 +17,15 @@ Shared HTTP helpers (_get/get_stream/fetch_parallel, Chrome TLS
 impersonation, TTL cache) live here so every provider gets them for free;
 they work on any URL, not just anidb's.
 """
+import base64
 import importlib
+import json
 import os
 import re
 import threading
 import time
 
+from Crypto.Cipher import AES
 from curl_cffi import requests
 
 H = dict(impersonate="chrome", timeout=20)
@@ -55,6 +58,59 @@ def _cached(key, ttl, fn, *a, **kw):
 def clear_cache():
     _CACHE.clear()
 
+# MegaPlay's getSourcesNew hid the stream URL in an AES-256-CBC "enc" field.
+# Key/IV are static and hardcoded in their public player JS (newclient.min.js)
+# — anti-scrape theater, not access control. ponytail: breaks if they rotate
+# the key; upgrade path = re-read newclient.min.js (or let it fail: both
+# shapes are tolerated below, so the old code path still works if reverted).
+_MP_KEY = b"i?LMTAx0Q6,:}50U".ljust(32, b"\x00")
+_MP_IV = b"W0;27ToaUpl_P%'c"
+
+def megaplay_sources(d):
+    """getSourcesNew response -> same dict with sources["file"] filled.
+    Old players return it plaintext; current ones base64url+AES-wrap it in
+    "enc" (decrypted payload is {"file": ...})."""
+    if not (d.get("sources") or {}).get("file") and d.get("enc"):
+        raw = base64.urlsafe_b64decode(d["enc"] + "=" * (-len(d["enc"]) % 4))
+        pt = AES.new(_MP_KEY, AES.MODE_CBC, _MP_IV).decrypt(raw)
+        j = json.loads(pt[:-pt[-1]])  # strip PKCS7
+        if j.get("file"):
+            d = {**d, "sources": {"file": j["file"]}}
+    return d
+
+
+def megaplay_master(embed, referer):
+    """MegaPlay embed url -> (master_url, [{label, src} subs], referer_or_None).
+
+    Shared by every provider fronting the MegaPlay player (hianime,
+    animekai): embed page (referer-gated) -> data-id -> getSourcesNew
+    (megaplay_sources) -> prove the CDN serves us, remembering which
+    Referer variant worked. referer = the front site's home (the embed
+    page 403s a stub without it). One attempt: the enc payload is
+    deterministic per data-id, re-rolling would just spam the provider.
+    The caller registers the returned master's hosts in its own
+    /stream allowlist."""
+    page = _get(embed, headers={"Referer": referer}, timeout=15).text
+    mid = re.search(r'data-id="(\d+)"', page)
+    if not mid:
+        return None, [], None
+    host = re.match(r'https?://([^/]+)', embed).group(1)
+    d = megaplay_sources(_get(f"https://{host}/stream/getSourcesNew?id={mid.group(1)}",
+             headers={"Referer": embed, "X-Requested-With": "XMLHttpRequest"},
+             timeout=15).json())
+    src = (d.get("sources") or {}).get("file")
+    if not src:
+        return None, [], None
+    subs = [{"label": (x or {}).get("label", ""), "src": (x or {}).get("file")}
+            for x in d.get("tracks") or []]
+    for cand, refr in (({"Referer": embed}, embed), ({}, None)):
+        try:
+            _get(src, headers=cand, timeout=10)
+            return src, subs, refr
+        except Exception:
+            continue
+    return None, [], None
+
 
 def _get(url, **kw):
     # ponytail: one retry (300ms) on transient upstream errors (Cloudflare

static/app.js

@@ -10,6 +10,9 @@ const BASE = (() => {
   return p.endsWith("/") ? p : p.slice(0, p.lastIndexOf("/") + 1);
 })();
 const main = document.getElementById("main");
+// Watched threshold (fraction of duration) — injected inline by the server
+// from DONE_RATIO in server/app.py; fallback matches that default.
+const DONE_RATIO = Number(window.DONE_RATIO ?? 0.95);
 let hls = null, detail = null, lang = "jpn", seasonId = null;
 
 async function api(path) {
@@ -190,7 +193,7 @@ const homeCard = x => {
   c.append(poster(x.poster, x.title));
   let meta = `E${x.ep} \u00b7 ${x.lang === "eng" ? "dub" : "sub"}`;
   if (done) meta += " \u00b7 \u2713";
-  else if (x.dur > 0 && x.pos < x.dur * 0.95) meta += ` \u00b7 ${fmtMin((x.dur - x.pos) / 60)} left`;
+  else if (x.dur > 0 && x.pos < x.dur * DONE_RATIO) meta += ` \u00b7 ${fmtMin((x.dur - x.pos) / 60)} left`;
   else if (hold) meta += ` \u00b7 ${Math.round(Date.now() / 1000 / 86400 - x.t / 86400)}d ago`;
   const info = el("div", "mini-info");
   info.append(el("div", "card-name", x.title), el("div", "mini-meta", meta));
@@ -250,11 +253,11 @@ function showHome() {
   body.append(el("div", "hero-kicker", "continue watching"),
               el("h2", null, hero.title),
               el("div", "muted", `Ep ${hero.ep} · ${hero.lang === "eng" ? "dub" : "sub"} · ${fmtPos(hero.pos)} in` +
-                (hero.dur > 0 && hero.pos < hero.dur * 0.95 ? ` · ${fmtMin((hero.dur - hero.pos) / 60)} left` : "") +
+                (hero.dur > 0 && hero.pos < hero.dur * DONE_RATIO ? ` · ${fmtMin((hero.dur - hero.pos) / 60)} left` : "") +
                 ` · ${timeago(hero.t)}`));
   const p = bar(hero);
   if (p) body.append(p);
-  const heroDone = hero.dur > 0 && hero.pos >= hero.dur * 0.95;
+  const heroDone = hero.dur > 0 && hero.pos >= hero.dur * DONE_RATIO;
   const go = el("button", "btn resume", heroDone ? "\u25b6 Next ep" : "\u25b6 Resume");
   go.onclick = () => location.href = histHref(hero);
   right.append(body, go);
@@ -503,7 +506,7 @@ async function showAnime(slug_id, opts = {}) {
     for (const x of await api("/api/history?all=1")) {
       if (x.slug_id !== slug_id || x.season_id !== seasonId) continue;
       started = true;
-      if (x.dur > 0 && x.pos >= x.dur * 0.95) watchDone.add(String(x.ep_id));
+      if (x.dur > 0 && x.pos >= x.dur * DONE_RATIO) watchDone.add(String(x.ep_id));
       else if (x.dur > 0) epProg.set(String(x.ep_id), Math.min(100, Math.round(100 * x.pos / x.dur)));
     }
   } catch {}
@@ -529,7 +532,7 @@ async function showAnime(slug_id, opts = {}) {
 function langLabel() { return lang === "eng" ? "▶ dub" : "▶ sub"; }
 
 // ---------- history page (full list + delete + client-side filter) ----------
-const histClass = x => x.dur > 0 && x.pos >= x.dur * 0.95 ? "done"
+const histClass = x => x.dur > 0 && x.pos >= x.dur * DONE_RATIO ? "done"
   : (x.t && Date.now() / 1000 - x.t > 7 * 86400 ? "hold" : "watching");
 function remapBoard() {
   // home: one stale card per stale anime (latest row), above the hero, so a
@@ -954,12 +957,12 @@ function renderPill(d) {
   p.querySelector(".d").className = "d" + (st ? " " + st : "");
   p.querySelector("span").textContent =
     !st ? "…" : st === "down" ? "down"
-    : st === "slow" ? "slow · " + d.kbps + " KB/s" : "up";
+    : st === "slow" ? "slow" + (d.kbps ? " · " + d.kbps + " KB/s" : "") : "up";
   p.title = "upstream site: " + d.origin.state + (d.origin.msg ? " — " + d.origin.msg : "")
-    + "  ·  video CDN: " + d.state + " — " + d.kbps + " KB/s";
+    + "  ·  video CDN: " + d.state + (d.kbps ? " — " + d.kbps + " KB/s" : "");
   p.setAttribute("aria-label", "status: " + (!st ? "checking"
     : st === "down" ? "down — upstream " + d.origin.state
-    : st === "slow" ? "slow — CDN " + d.state + ", " + d.kbps + " KB/s"
+    : st === "slow" ? "slow — CDN " + d.state + (d.kbps ? ", " + d.kbps + " KB/s" : "")
     : "up"));
 }
 
@@ -979,12 +982,12 @@ function renderStatusPanel(d) {
   w.replaceChildren();
   w.append(el("div", "sp-row", "upstream: " + d.origin.state
     + (d.origin.msg ? " (" + d.origin.msg + ")" : "")));
-  w.append(el("div", "sp-row", "CDN: " + d.state + " — " + d.kbps + " KB/s"));
+  w.append(el("div", "sp-row", "CDN: " + d.state + (d.kbps ? " — " + d.kbps + " KB/s" : "")));
   const ch = d.hist || [];
   if (ch.length > 1) {
-    w.append(sparkline(ch.map(s => s.kbps), d.threshold));
-    w.append(el("div", "sp-cap", "CDN, last " + _mins(ch)
-      + " min (dashed = slow threshold " + Math.round(d.threshold) + " KB/s)"));
+    w.append(sparkline(ch.map(s => s.kbps), d.kbps ? d.threshold : null));
+    w.append(el("div", "sp-cap", "CDN, last " + _mins(ch) + " min"
+      + (d.kbps ? " (dashed = slow threshold " + Math.round(d.threshold) + " KB/s)" : "")));
   }
   const oh = d.origin.hist || [];
   if (oh.length > 1) {
@@ -1135,7 +1138,11 @@ async function play(ep_id, ep_no) {
         branch: (!window.Hls || !Hls.isSupported()) ? (nativeOK !== "none" && nativeOK !== "" ? "native" : "none-throw") : "hlsjs",
         hls_lib: typeof window.Hls, mse, native_hls: nativeOK, ua: navigator.userAgent});
     } catch {}
-    if (!window.Hls || !Hls.isSupported()) {
+    if (s.hls === false) {
+      // progressive file (1anime's direct MP4): native <video>; the /stream
+      // proxy forwards the browser's Range requests, so seeking works
+      v.src = "/stream/" + s.token;
+    } else if (!window.Hls || !Hls.isSupported()) {
       // No MSE (e.g. iOS < 17): fall back to the browser's NATIVE HLS player.
       // iOS Safari plays standard m3u8 in <video> directly — same proxied URL,
       // same-origin, so no CORS needed.
@@ -1215,7 +1222,7 @@ async function play(ep_id, ep_no) {
     }
     if (saved?.pos > 10) {
       v.addEventListener("loadedmetadata", () => {
-        if (saved.pos < v.duration * 0.95) v.currentTime = saved.pos;
+        if (saved.pos < v.duration * DONE_RATIO) v.currentTime = saved.pos;
       }, {once: true});
     }
     v.onerror = () => playerFail("media error");

static/index.html

@@ -35,6 +35,9 @@
      route) with the git SHA at startup — a correct cache key per commit.
      No hand-bumping; JSV in app.js reads the same value from its own URL. -->
 <script src="hls.min.js"></script>
+<!-- Watched threshold: server injects its DONE_RATIO source constant here;
+     app.js reads it as DONE_RATIO. Server uses the same value for its stats. -->
+<script>window.DONE_RATIO = {{DONE_RATIO}};</script>
 <script src="app.js?v={{VERSION}}"></script>
 </body>
 </html>

tests/test_animekai.py

@@ -0,0 +1,133 @@
+"""test_animekai.py — animekai provider + MegaPlay decrypt + /stream Range path.
+
+All offline (monkeypatched network) so the suite never touches animekai.be,
+MegaPlay, or any CDN. Live smoke tests live in test_animekai_live.py and
+are skipped unless ANI_LIVE=1.
+
+Run:  .venv/bin/pytest tests/test_animekai.py -q
+"""
+import base64
+import os
+import sys
+import types
+from pathlib import Path
+
+import pytest
+
+ROOT = Path(__file__).resolve().parents[1]
+sys.path.insert(0, str(ROOT))
+
+# Live 1anime-style host the /stream allowlist tests will register
+HOST = "my.1anime.site"
+VIDEO = f"https://{HOST}/stream/69f9d2aef757c305714fdc246e06d6bc"
+
+
+def test_animekai_provider_imports():
+    import server.providers.animekai as a  # noqa: F401
+    for fn in ("search", "details", "episodes", "languages", "master_m3u8"):
+        assert callable(getattr(a, fn)), fn
+    assert callable(a.stream_meta)
+    assert callable(a.subtitles)
+
+
+def test_animekai_stream_meta_allowlist():
+    import server.providers.animekai as a
+    assert a.stream_meta("https://other.example/x.m3u8") is None
+    a.STREAM_HOSTS[HOST] = {"Referer": "https://" + HOST + "/"}
+    assert a.stream_meta(VIDEO) == {"Referer": "https://" + HOST + "/"}
+    a.STREAM_HOSTS.clear()
+
+
+# --- MegaPlay payload: old plaintext shape, new AES "enc" shape ------------
+# enc sample: real getSourcesNew response captured 2026-09-29 (deterministic
+# per data-id; key/IV static in the player's public JS — see upstream._MP_KEY)
+ENC = ("wdeBruh3qqn_i5wUNnyaPcXqidp1UWP84FfPHzGyKXA2hDZBfMCmZ4FLvs7_pQuH549Ept"
+       "ax8UOjAJyRIZfrRhUGUKy9OBeGh2yB_-m_JLAlLnWTLzYZC3_C5I4ltveYoiaU66Do9Rg"
+       "I9bCetmk_o87-sd66brXnWV1MbjhLnjw")
+
+
+def test_megaplay_sources_old_shape_passthrough():
+    from server.upstream import megaplay_sources
+    d = {"sources": {"file": "https://cdn.x/master.m3u8"}, "tracks": []}
+    out = megaplay_sources(d)
+    assert out["sources"]["file"] == "https://cdn.x/master.m3u8"
+
+
+def test_megaplay_sources_new_shape_decrypts():
+    from server.upstream import megaplay_sources
+    out = megaplay_sources({"enc": ENC, "tracks": [{"file": "a.vtt"}]})
+    f = out["sources"]["file"]
+    assert f.startswith("https://") and f.endswith("master.m3u8"), f
+    assert out["tracks"] == [{"file": "a.vtt"}]  # outer fields untouched
+
+
+def test_megaplay_sources_no_sources_unchanged():
+    from server.upstream import megaplay_sources
+    assert megaplay_sources({}) == {}
+
+
+def test_megaplay_sources_garbage_enc_raises():
+    from server.upstream import megaplay_sources
+    # corrupt payload must raise (provider -> fallback chain), not return None
+    with pytest.raises(Exception):
+        megaplay_sources({"enc": "AAAA" * 10})
+
+
+# --- /stream Range pass-through (progressive MP4), offline -----------------
+
+class _FakeStream:
+    """Minimal stand-in for a streaming curl_cffi response (206 + chunk)."""
+    status_code = 206
+    headers = {"content-type": "video/mp4",
+               "content-range": f"bytes 0-1023/{1024 * 1024}",
+               "accept-ranges": "bytes"}
+
+    def iter_content(self, chunk_size=1):
+        yield b"x" * 1024
+
+    def close(self):
+        pass
+
+
+@pytest.fixture()
+def app_mod(monkeypatch):
+    monkeypatch.setenv("ANI_SOURCE", "animekai")
+    import server.upstream as up
+    monkeypatch.setattr(up, "get_stream",
+                        lambda url, timeout=12, headers=None: _FakeStream())
+    import server.app as m
+    return m
+
+
+def _drain(it):
+    import asyncio
+    async def _go():
+        return b"".join([c async for c in it])
+    return asyncio.run(_go())
+
+
+def _call(app_mod, token, range_hdr):
+    """Invoke the /stream handler in-process (no TestClient: it wants httpx).
+    Returns (status, headers_dict, body_bytes)."""
+    req = types.SimpleNamespace(headers={"range": range_hdr} if range_hdr else {})
+    resp = app_mod.stream(token, request=req)
+    body = _drain(resp.body_iterator) if getattr(resp, "body_iterator", None) is not None else resp.body
+    return resp.status_code, dict(resp.headers), body
+
+
+def test_stream_range_forwards_206_and_chunk(app_mod):
+    import server.providers.animekai as a
+    a.STREAM_HOSTS[HOST] = {"Referer": "https://" + HOST + "/"}
+    token = base64.urlsafe_b64encode(VIDEO.encode()).decode()
+    status, hdrs, body = _call(app_mod, token, "bytes=0-1023")
+    assert status == 206, status
+    assert hdrs.get("content-range") == f"bytes 0-1023/{1024 * 1024}"
+    assert len(body) == 1024
+
+
+def test_stream_range_not_cached(app_mod):
+    import server.providers.animekai as a
+    a.STREAM_HOSTS[HOST] = {"Referer": "https://" + HOST + "/"}
+    token = base64.urlsafe_b64encode(VIDEO.encode()).decode()
+    _call(app_mod, token, "bytes=0-1023")
+    assert VIDEO not in app_mod._STREAM_CACHE, "ranged chunk poisoned the LRU"

tests/test_animekai_live.py

@@ -0,0 +1,103 @@
+"""test_animekai_live.py — LIVE smoke tests for the animekai provider.
+
+Skipped by default so the suite never touches animekai.be (politeness:
+the provider must not be spammed by CI or local test runs). Enable with:
+
+    ANI_LIVE=1 .venv/bin/pytest tests/test_animekai_live.py -q -s
+
+Every call rides the provider's _cached TTL cache, so one run is a
+handful of requests, not a crawl.
+"""
+import base64
+import os
+import sys
+from pathlib import Path
+
+import pytest
+
+ROOT = Path(__file__).resolve().parents[1]
+sys.path.insert(0, str(ROOT))
+
+live = pytest.mark.skipif(
+    os.environ.get("ANI_LIVE") != "1",
+    reason="live upstream test: run with ANI_LIVE=1")
+
+
+@live
+def test_search_shape():
+    from server.providers import animekai as a
+    r = a.search("one piece")
+    assert r and all(set(x) >= {"id", "slug_id", "name"} for x in r), r[:2]
+    print("\nsearch:", [(x["name"], x["slug_id"]) for x in r[:3]])
+
+
+@live
+def test_details_episodes_languages():
+    from server.providers import animekai as a
+    r = a.search("one piece")
+    top = next(x for x in r if x["name"].lower().startswith("one piece"))
+    d = a.details(top["slug_id"])
+    print("\ndetails:", {k: (str(v)[:60] if v else v) for k, v in d.items()
+                        if k != "seasons"})
+    assert d["name"] and d["id"], d
+    eps = a.episodes(d["id"])
+    assert eps and eps[0]["number"] == 1, eps[:2]
+    print("episodes:", len(eps), "first:", eps[0])
+    langs = a.languages(eps[0]["id"])
+    print("langs ep1:", langs)
+    assert langs, "ep1 should have at least sub"
+
+
+@live
+def test_master_resolves_and_stream_proxy_serves_range(monkeypatch):
+    """Full path: provider resolves a stream, and the in-process /stream
+    proxy serves it with Range (206 + chunk). server.app import is safe
+    here: the CDN probe is idle-gated (no upstream fetch until a play)."""
+    # stream_meta's allowlist walks the ANI_SOURCE chain; point it at
+    # animekai (as run.sh does) so the resolved host is permitted
+    monkeypatch.setenv("ANI_SOURCE", "animekai")
+    from server.providers import animekai as a
+    # Sparks of Tomorrow's early eps were observed on 1anime servers
+    # (independent CDN); the browse sort is most_viewed, so pick the title
+    # by name, not position, then scan its first episodes for a resolver.
+    r = a.search("sparks of tomorrow")
+    top = next((x for x in r if "sparks" in x["name"].lower()), r[0])
+    d = a.details(top["slug_id"])
+    eps = a.episodes(d["id"])
+    got = None
+    for e in eps[:5]:
+        for lang in ("jpn", "eng"):
+            try:
+                got = a.master_m3u8(e["id"], lang)
+            except Exception as ex:
+                print(f"\nep{e['number']} {lang}: {ex}")
+            if got:
+                break
+        if got:
+            break
+    assert got, "no server resolved for ep1-3 (both backends dead?)"
+    print("\nresolved:", got)
+
+    # host must be allowlisted (that IS the /stream permit)
+    from urllib.parse import urlparse
+    meta = a.stream_meta(got)
+    assert meta is not None, f"provider did not register host for {got}"
+
+    # in-process /stream Range check (direct handler call, no server spawn)
+    import asyncio
+    import types
+    import server.app as app_mod
+    token = base64.urlsafe_b64encode(got.encode()).decode()
+    rng = None if got.endswith(".m3u8") else "bytes=0-1023"
+    req = types.SimpleNamespace(headers={"range": rng} if rng else {})
+    resp = app_mod.stream(token, request=req)
+
+    async def _drain(it):
+        return b"".join([c async for c in it])
+    body = (asyncio.run(_drain(resp.body_iterator)) if getattr(resp, "body_iterator", None) is not None
+            else resp.body)
+    if got.endswith(".m3u8"):
+        assert resp.status_code == 200 and b"#EXTM3U" in body
+    else:
+        assert resp.status_code == 206 and len(body) == 1024, resp.status_code
+    print("proxy:", resp.status_code, len(body), "b")