Fix Cascade egress verify to bind awg0 IP (v2.2.1).

Use client-subnet policy routing for curl checks instead of cascade peer Address; soft-warn when echo services fail but the route is OK.

README.md

@@ -63,7 +63,7 @@ Configuration panel for system parameters and preferences:
     *   **Classic WireGuard**: Standard, high-performance WireGuard protocol for unmatched speed and broad device compatibility with traffic monitoring support.
     *   **Xray (XTLS-Reality)**: Stealthy protocol that masks VPN traffic as standard HTTPS browsing. Pinned to **Xray-core v26.x**; transparently reads both the **panel layout** (`meta.json` + `clientsTable.json`) and the **native Amnezia client layout** (`xray_*.key` files + `clientsTable`), so a node first installed via the official mobile/desktop app can be attached to the panel without re-installation.
     *   **Hysteria 2**: QUIC/HTTP3 proxy from [apernet/hysteria](https://github.com/apernet/hysteria) via `tobyxdd/hysteria:v2` — Let's Encrypt TLS, salamander obfuscation, password auth, `hy2://` share links. Per-server SSL domain/email defaults, renew from settings; install requires free TCP **80** and **443**.
-    *   **NaiveProxy**: HTTPS/HTTP2 camouflage proxy via [klzgrad/naiveproxy](https://github.com/klzgrad/naiveproxy) (Caddy + [klzgrad/forwardproxy](https://github.com/klzgrad/forwardproxy) naïve fork). ACME TLS on the domain, per-client basic auth, `naive+https://` share links. Requires free TCP **80** and **443**.
+    *   **NaiveProxy** (stable): HTTPS/HTTP2 camouflage proxy via [klzgrad/naiveproxy](https://github.com/klzgrad/naiveproxy) (Caddy + [klzgrad/forwardproxy](https://github.com/klzgrad/forwardproxy) naïve fork). ACME TLS on the domain, per-client basic auth, `naive+https://` share links. Requires free TCP **80** and **443**. **Use Karing** as the client — do **not** use v2rayN; other clients are untested.
     *   **Telemt (Telegram MTProxy)**: High-performance Telegram MTProxy with TLS emulation and comprehensive management (quotas, IP limits, real-time session tracking). Robust install path that auto-configures Docker's official apt/yum repository when needed.
     *   **Cloudflare WARP**: Add and manage WARP-powered connectivity from the panel for routing and network flexibility.
 *   **🛠 Services**:
@@ -79,6 +79,11 @@ Configuration panel for system parameters and preferences:
     *   **Reboot** the server directly from the UI.
     *   Strictly concurrent protocol status polling — all supported protocols/services checked in parallel for immediate feedback.
     *   **Asynchronous Processing**: Resilient, non-blocking background architecture prevents the UI panel from freezing, even if remote endpoints hang.
+*   **🔁 Cascade (double VPN)**:
+    *   Route clients through an **entry** AmneziaWG/WireGuard server to an **exit** server (country-block bypass).
+    *   Approach inspired by [ryderams/amneziawg-cascade](https://github.com/ryderams/amneziawg-cascade) (AWG2 entry→exit); applied via panel SSH — **no remote curl|bash** script download.
+    *   Handshake wait + optional egress verify (curl --interface → ifconfig.me); exit return route persisted like ryderams vps2.
+    *   Users keep using the **ENTRY** client config only — do not share the exit cascade peer.
 *   **🧩 Marketplace & Templates**:
     *   Market templates provide quick presets for installing and configuring supported protocols and services (including **Hysteria 2**).
     *   Multi-protocol management lets you run and control multiple protocol instances on the same server.
@@ -222,6 +227,24 @@ GitHub Actions workflows in `.github/workflows/`:
 
 ## 📋 Fix / changelog (this fork)
 
+### v2.2.1
+*   **Cascade egress verify fix**: bind curl to ENTRY `awg0`/`wg0` IP (client-subnet policy route), not cascade peer Address.
+*   Soft-warn (no rollback) when policy route via `cascade` is OK but public-IP echo services fail.
+
+### v2.2.0
+*   **Cascade (double VPN) restored** — stable entry→exit tunnel for AmneziaWG / WireGuard.
+*   Inspired by [ryderams/amneziawg-cascade](https://github.com/ryderams/amneziawg-cascade); logic runs over panel SSH (**no remote curl|bash**).
+*   Safety: require exit **handshake** when enabled; optional **egress verify**; subnet conflict check; exit `/32` return route with start.sh markers.
+*   UI on the server page with per-step settings (pin exit route, MSS clamp, verify egress, …). Defaults prefer **awg2**.
+
+### v2.1.0
+*   **NaiveProxy — stable**: production-ready install (Caddy + klzgrad/forwardproxy), share links always include `:443`.
+*   **Client notes (important)**:
+    *   **Do not use v2rayN** with NaiveProxy (broken DNS/IPv6 behaviour → latency −1 ms even when the server is fine).
+    *   **Karing** — confirmed working.
+    *   Other clients — untested / use at your own risk.
+*   Share-link and config UI hints updated accordingly.
+
 ### v2.0.0-beta
 *   **NaiveProxy** (Beta): install [klzgrad/naiveproxy](https://github.com/klzgrad/naiveproxy) server via Caddy + naïve [forwardproxy](https://github.com/klzgrad/forwardproxy) — domain TLS (ACME), per-client basic auth, `naive+https://` share links.
 *   Marketplace / server page / users / invites / Telegram / backups include NaiveProxy.
@@ -245,7 +268,7 @@ GitHub Actions workflows in `.github/workflows/`:
 ### v1.6.0
 *   **3x-ui multi-panel**: register several 3x-ui servers in Settings; pick a panel and load VLESS inbounds over its API when creating users/invites (share link comes from 3x-ui).
 *   **Docker / CI**: refreshed `Dockerfile` + compose, `.env.example`, CI checks, GHCR image workflow.
-*   **Cascade removed** for now (pending redesign — showed active while internet often did not work).
+*   **Cascade** was temporarily removed in this release (redesigned and restored in **v2.2.0**).
 *   **WG/AWG backups**: ZIP export of client `.conf` + restore with loading feedback.
 *   **API performance**: in-memory data cache, faster server check/stats.
 *   **Share / guest**: one-tap “Copy key”.

app.py

@@ -46,6 +46,7 @@ from managers.awg_manager import AWGManager
 from managers.xray_manager import XrayManager
 from managers.wireguard_manager import WireGuardManager
 from managers.backup_manager import BackupManager
+from managers.cascade_manager import CascadeManager, normalize_settings, DEFAULT_SETTINGS as CASCADE_DEFAULT_SETTINGS
 import telegram_bot as tg_bot
 
 # Configure logging
@@ -101,7 +102,7 @@ else:
     application_path = os.path.dirname(__file__)
 
 DATA_FILE = os.path.join(application_path, 'data.json')  # legacy JSON; used only for one-shot import / export
-CURRENT_VERSION = "v2.0.0-beta"
+CURRENT_VERSION = "v2.2.1"
 RELEASES_REPO_URL = "https://git.evilfox.cc/test2/Amnezia-Web-Panel-main"
 RELEASES_API_LATEST = "https://git.evilfox.cc/api/v1/repos/test2/Amnezia-Web-Panel-main/releases/latest"
 BIN_DIR = os.environ.get('TUNNEL_BIN_DIR', os.path.join(application_path, 'bin'))
@@ -1742,6 +1743,24 @@ class HysteriaSettingsRequest(BaseModel):
     email: Optional[str] = None
     renew_ssl: bool = False
 
+class CascadeSetupRequest(BaseModel):
+    entry_protocol: str = 'awg2'
+    exit_server_id: Optional[int] = None
+    exit_protocol: str = 'awg2'
+    enabled: bool = True
+    # Per-step cascade tuning
+    pin_exit_route: Optional[bool] = True
+    remove_eth_masquerade: Optional[bool] = True
+    force_forward: Optional[bool] = True
+    mss_clamp: Optional[bool] = True
+    wait_handshake: Optional[bool] = True
+    handshake_timeout_sec: Optional[int] = 25
+    allowed_ips: Optional[str] = '0.0.0.0/0'
+    keep_exit_dns: Optional[bool] = False
+    vpn_subnet_override: Optional[str] = ''
+    table_id: Optional[int] = 200
+    rule_priority: Optional[int] = 100
+    verify_egress: Optional[bool] = True
 
 class ProtocolRequest(BaseModel):
     protocol: str = 'awg'
@@ -3231,6 +3250,244 @@ async def api_hysteria_update_settings(request: Request, server_id: int, req: Hy
         return JSONResponse({'error': str(e)}, status_code=500)
 
 
+@app.post('/api/servers/{server_id}/cascade', tags=["Protocols"])
+async def api_cascade_get(request: Request, server_id: int):
+    """Return saved cascade settings and live tunnel status for this (entry) server."""
+    if not _check_admin(request):
+        return JSONResponse({'error': 'Forbidden'}, status_code=403)
+    try:
+        data = await asyncio.to_thread(load_data)
+        if server_id >= len(data['servers']):
+            return JSONResponse({'error': 'Server not found'}, status_code=404)
+        server = data['servers'][server_id]
+        cascade = dict(server.get('cascade') or {})
+        live = {'enabled': False, 'up': False}
+        entry_proto = cascade.get('entry_protocol') or ''
+        if cascade.get('enabled') and entry_proto and CascadeManager.is_wg_family(entry_proto):
+            def _status():
+                ssh = get_ssh(server)
+                ssh.connect()
+                try:
+                    return CascadeManager(ssh).status(entry_proto)
+                finally:
+                    ssh.disconnect()
+            live = await asyncio.to_thread(_status)
+        return {
+            'cascade': cascade,
+            'live': live,
+            'defaults': CASCADE_DEFAULT_SETTINGS,
+            'servers': [
+                {
+                    'id': i,
+                    'name': s.get('name') or s.get('host'),
+                    'host': s.get('host'),
+                    'protocols': list((s.get('protocols') or {}).keys()),
+                }
+                for i, s in enumerate(data['servers']) if i != server_id
+            ],
+        }
+    except Exception as e:
+        logger.exception("Error reading cascade status")
+        return JSONResponse({'error': str(e)}, status_code=500)
+
+
+@app.post('/api/servers/{server_id}/cascade/setup', tags=["Protocols"])
+async def api_cascade_setup(request: Request, server_id: int, req: CascadeSetupRequest):
+    """Enable or disable double-VPN cascade: clients → this entry → exit server."""
+    if not _check_admin(request):
+        return JSONResponse({'error': 'Forbidden'}, status_code=403)
+    if not CascadeManager.is_wg_family(req.entry_protocol):
+        return JSONResponse({'error': 'Cascade supports WireGuard / AmneziaWG only'}, status_code=400)
+    if req.enabled and not CascadeManager.is_wg_family(req.exit_protocol):
+        return JSONResponse({'error': 'Cascade supports WireGuard / AmneziaWG only'}, status_code=400)
+
+    try:
+        data = await asyncio.to_thread(load_data)
+        if server_id >= len(data['servers']):
+            return JSONResponse({'error': 'Server not found'}, status_code=404)
+        entry = data['servers'][server_id]
+        settings = normalize_settings({
+            'pin_exit_route': req.pin_exit_route,
+            'remove_eth_masquerade': req.remove_eth_masquerade,
+            'force_forward': req.force_forward,
+            'mss_clamp': req.mss_clamp,
+            'wait_handshake': req.wait_handshake,
+            'handshake_timeout_sec': req.handshake_timeout_sec,
+            'allowed_ips': req.allowed_ips,
+            'keep_exit_dns': req.keep_exit_dns,
+            'vpn_subnet_override': req.vpn_subnet_override,
+            'table_id': req.table_id,
+            'rule_priority': req.rule_priority,
+            'verify_egress': req.verify_egress,
+        })
+        if not req.enabled:
+            def _disable():
+                ssh = get_ssh(entry)
+                ssh.connect()
+                try:
+                    return CascadeManager(ssh).disable(
+                        req.entry_protocol,
+                        settings=dict((entry.get('cascade') or {}).get('settings') or settings),
+                    )
+                finally:
+                    ssh.disconnect()
+
+            result = await asyncio.to_thread(_disable)
+            if result.get('status') == 'error':
+                return JSONResponse({'error': result.get('message', 'Failed to disable cascade')}, status_code=500)
+            prev = dict(entry.get('cascade') or {})
+            entry['cascade'] = {
+                'enabled': False,
+                'entry_protocol': req.entry_protocol or prev.get('entry_protocol'),
+                'exit_server_id': prev.get('exit_server_id'),
+                'exit_protocol': prev.get('exit_protocol') or req.exit_protocol,
+                'settings': settings,
+                'updated_at': datetime.now().isoformat(timespec='seconds'),
+            }
+            async with DATA_LOCK:
+                await asyncio.to_thread(save_data, data)
+            return {'status': 'success', 'cascade': entry['cascade']}
+
+        if req.exit_server_id is None:
+            return JSONResponse({'error': 'exit_server_id is required'}, status_code=400)
+        if req.exit_server_id < 0 or req.exit_server_id >= len(data['servers']):
+            return JSONResponse({'error': 'Exit server not found'}, status_code=404)
+        if req.exit_server_id == server_id:
+            return JSONResponse({'error': 'Entry and exit servers must be different'}, status_code=400)
+
+        exit_srv = data['servers'][req.exit_server_id]
+
+        def _enable():
+            exit_ssh = get_ssh(exit_srv)
+            exit_ssh.connect()
+            try:
+                exit_mgr = get_protocol_manager(exit_ssh, req.exit_protocol)
+                clients = _manager_call(exit_mgr, 'get_clients', req.exit_protocol) or []
+                cascade_name = f"cascade-from-{(entry.get('name') or entry.get('host') or 'entry')[:40]}"
+                cascade_name = re.sub(r'[^\w.\-]+', '_', cascade_name).strip('._') or 'cascade-entry'
+                existing = None
+                for c in clients:
+                    ud = c.get('userData') or {}
+                    if ud.get('clientName') == cascade_name or ud.get('cascade_entry_server_id') == server_id:
+                        existing = c
+                        break
+
+                if existing:
+                    client_id = existing.get('clientId')
+                    conf = _manager_call(
+                        exit_mgr, 'get_client_config', req.exit_protocol,
+                        client_id, exit_srv['host'],
+                        (exit_srv.get('protocols') or {}).get(req.exit_protocol, {}).get('port', '55424'),
+                    )
+                else:
+                    add_res = _manager_call(
+                        exit_mgr, 'add_client', req.exit_protocol, cascade_name,
+                        exit_srv['host'],
+                        (exit_srv.get('protocols') or {}).get(req.exit_protocol, {}).get('port', '55424'),
+                    )
+                    if not add_res.get('client_id'):
+                        raise RuntimeError(add_res.get('message') or 'Failed to create cascade peer on exit')
+                    client_id = add_res['client_id']
+                    conf = add_res.get('config')
+                    if not conf:
+                        conf = _manager_call(
+                            exit_mgr, 'get_client_config', req.exit_protocol,
+                            client_id, exit_srv['host'],
+                            (exit_srv.get('protocols') or {}).get(req.exit_protocol, {}).get('port', '55424'),
+                        )
+                    try:
+                        table = exit_mgr._get_clients_table(req.exit_protocol) if hasattr(exit_mgr, '_get_clients_table') else []
+                        for row in table:
+                            if row.get('clientId') == client_id:
+                                row.setdefault('userData', {})['cascade_entry_server_id'] = server_id
+                                if hasattr(exit_mgr, '_save_clients_table'):
+                                    exit_mgr._save_clients_table(req.exit_protocol, table)
+                                break
+                    except Exception:
+                        pass
+            finally:
+                exit_ssh.disconnect()
+
+            entry_ssh = get_ssh(entry)
+            entry_ssh.connect()
+            try:
+                applied = CascadeManager(entry_ssh).apply(
+                    req.entry_protocol,
+                    conf,
+                    exit_srv.get('host') or '',
+                    settings=settings,
+                )
+            finally:
+                entry_ssh.disconnect()
+
+            if applied.get('status') != 'success':
+                raise RuntimeError(applied.get('message') or 'Failed to apply cascade on entry')
+
+            if settings.get('wait_handshake') and not applied.get('handshake'):
+                try:
+                    entry_ssh2 = get_ssh(entry)
+                    entry_ssh2.connect()
+                    try:
+                        CascadeManager(entry_ssh2).disable(req.entry_protocol, settings=settings)
+                    finally:
+                        entry_ssh2.disconnect()
+                except Exception:
+                    pass
+                raise RuntimeError(
+                    applied.get('message')
+                    or 'Cascade apply reported success but exit handshake is missing'
+                )
+
+            peer_ip = applied.get('cascade_peer_ip') or ''
+            if not peer_ip and conf:
+                peer_ip = CascadeManager._extract_address_ip(conf)
+            if peer_ip and hasattr(CascadeManager, 'ensure_exit_return_route'):
+                exit_ssh2 = get_ssh(exit_srv)
+                exit_ssh2.connect()
+                try:
+                    route_res = CascadeManager(exit_ssh2).ensure_exit_return_route(
+                        req.exit_protocol, peer_ip
+                    )
+                    applied['exit_return_route'] = route_res
+                finally:
+                    exit_ssh2.disconnect()
+
+            return {
+                'client_id': client_id,
+                'client_name': cascade_name,
+                'applied': applied,
+            }
+
+        info = await asyncio.to_thread(_enable)
+        applied = info.get('applied') or {}
+        entry['cascade'] = {
+            'enabled': True,
+            'entry_protocol': req.entry_protocol,
+            'exit_server_id': req.exit_server_id,
+            'exit_protocol': req.exit_protocol,
+            'exit_client_id': info['client_id'],
+            'exit_client_name': info['client_name'],
+            'settings': settings,
+            'up': bool(applied.get('up')),
+            'handshake': bool(applied.get('handshake')),
+            'updated_at': datetime.now().isoformat(timespec='seconds'),
+            'last_error': None,
+            'diagnostics': applied.get('diagnostics') or '',
+        }
+        async with DATA_LOCK:
+            await asyncio.to_thread(save_data, data)
+        return {
+            'status': 'success',
+            'cascade': entry['cascade'],
+            'applied': applied,
+            'warning': applied.get('warning'),
+        }
+    except Exception as e:
+        logger.exception("Error setting up cascade")
+        return JSONResponse({'error': str(e)}, status_code=500)
+
+
+
 @app.post('/api/servers/{server_id}/uninstall', tags=["Protocols"])
 async def api_uninstall_protocol(request: Request, server_id: int, req: ProtocolRequest):
     if not _check_admin(request):

managers/cascade_manager.py

@@ -0,0 +1,733 @@
+"""Cascade (double-VPN) between two panel-managed WireGuard/AWG servers.
+
+Traffic path:
+  Clients → Entry server (accessible) → Exit server (blocked / target) → Internet
+
+Implemented inside the entry Docker container as a second AWG/WG interface
+(`cascade.conf`) with source-based routing for the VPN client subnet.
+
+Inspired by ryderams/amneziawg-cascade (AWG2 entry→exit), but executed via the
+panel SSH session — no remote curl|bash script download.
+"""
+
+from __future__ import annotations
+
+import ipaddress
+import re
+import shlex
+from datetime import datetime
+from typing import Optional
+
+
+WG_FAMILY = {'awg', 'awg2', 'awg_legacy', 'wireguard'}
+CASCADE_MARKER = '# amnezia-web-panel-cascade'
+EXIT_ROUTE_BEGIN = '# BEGIN awg-cascade-vps2'
+EXIT_ROUTE_END = '# END awg-cascade-vps2'
+
+DEFAULT_SETTINGS = {
+    'pin_exit_route': True,
+    'remove_eth_masquerade': True,
+    'force_forward': True,
+    'mss_clamp': True,
+    'wait_handshake': True,
+    'handshake_timeout_sec': 25,
+    'allowed_ips': '0.0.0.0/0',
+    'keep_exit_dns': False,
+    'vpn_subnet_override': '',
+    'table_id': 200,
+    'rule_priority': 100,
+    'verify_egress': True,
+}
+
+
+def normalize_settings(raw: Optional[dict]) -> dict:
+    settings = dict(DEFAULT_SETTINGS)
+    if isinstance(raw, dict):
+        for key, default in DEFAULT_SETTINGS.items():
+            if key not in raw or raw[key] is None:
+                continue
+            if isinstance(default, bool):
+                settings[key] = bool(raw[key])
+            elif isinstance(default, int):
+                try:
+                    settings[key] = int(raw[key])
+                except (TypeError, ValueError):
+                    settings[key] = default
+            else:
+                settings[key] = str(raw[key]).strip()
+    settings['handshake_timeout_sec'] = max(5, min(120, int(settings['handshake_timeout_sec'])))
+    settings['table_id'] = max(1, min(252, int(settings['table_id'])))
+    settings['rule_priority'] = max(1, min(32765, int(settings['rule_priority'])))
+    if not settings.get('allowed_ips'):
+        settings['allowed_ips'] = DEFAULT_SETTINGS['allowed_ips']
+    return settings
+
+
+class CascadeManager:
+    def __init__(self, ssh_manager):
+        self.ssh = ssh_manager
+
+    @staticmethod
+    def proto_base(protocol: str) -> str:
+        return str(protocol or '').split('__', 1)[0]
+
+    @staticmethod
+    def is_wg_family(protocol: str) -> bool:
+        return CascadeManager.proto_base(protocol) in WG_FAMILY
+
+    @staticmethod
+    def _container_name(protocol: str) -> str:
+        base = CascadeManager.proto_base(protocol)
+        match = re.search(r'__(\d+)$', str(protocol or ''))
+        idx = int(match.group(1)) if match else 1
+        names = {
+            'awg': 'amnezia-awg',
+            'awg2': 'amnezia-awg2',
+            'awg_legacy': 'amnezia-awg-legacy',
+            'wireguard': 'amnezia-wireguard',
+        }
+        name = names.get(base)
+        if not name:
+            return ''
+        return name if idx <= 1 else f'{name}-{idx}'
+
+    @staticmethod
+    def _wg_binary(protocol: str) -> str:
+        return 'wg' if CascadeManager.proto_base(protocol) in ('awg_legacy', 'wireguard') else 'awg'
+
+    @staticmethod
+    def _quick_binary(protocol: str) -> str:
+        return 'wg-quick' if CascadeManager.proto_base(protocol) in ('awg_legacy', 'wireguard') else 'awg-quick'
+
+    @staticmethod
+    def _conf_dir(protocol: str) -> str:
+        return '/opt/amnezia/wireguard' if CascadeManager.proto_base(protocol) == 'wireguard' else '/opt/amnezia/awg'
+
+    @classmethod
+    def _cascade_conf(cls, protocol: str) -> str:
+        return f'{cls._conf_dir(protocol)}/cascade.conf'
+
+    @classmethod
+    def _cascade_up(cls, protocol: str) -> str:
+        return f'{cls._conf_dir(protocol)}/cascade-up.sh'
+
+    @staticmethod
+    def _server_conf(protocol: str) -> str:
+        base = CascadeManager.proto_base(protocol)
+        if base == 'wireguard':
+            return '/opt/amnezia/wireguard/wg0.conf'
+        if base == 'awg_legacy':
+            return '/opt/amnezia/awg/wg0.conf'
+        return '/opt/amnezia/awg/awg0.conf'
+
+    @staticmethod
+    def _server_iface(protocol: str) -> str:
+        base = CascadeManager.proto_base(protocol)
+        if base in ('wireguard', 'awg_legacy'):
+            return 'wg0'
+        return 'awg0'
+
+    @staticmethod
+    def _extract_endpoint_host(config_text: str) -> str:
+        for line in (config_text or '').splitlines():
+            if line.strip().lower().startswith('endpoint'):
+                rhs = line.split('=', 1)[-1].strip()
+                return rhs.rsplit(':', 1)[0].strip().strip('[]')
+        return ''
+
+    @staticmethod
+    def _extract_address_cidr(config_text: str) -> str:
+        for line in (config_text or '').splitlines():
+            stripped = line.strip()
+            if stripped.lower().startswith('address'):
+                rhs = stripped.split('=', 1)[-1].strip()
+                return rhs.split(',')[0].strip()
+        return ''
+
+    @staticmethod
+    def _extract_address_ip(config_text: str) -> str:
+        cidr = CascadeManager._extract_address_cidr(config_text)
+        if not cidr:
+            return ''
+        return cidr.split('/', 1)[0].strip()
+
+    @staticmethod
+    def prepare_exit_client_config(
+        raw_config: str,
+        endpoint_host: str,
+        *,
+        keep_dns: bool = False,
+        allowed_ips: str = '0.0.0.0/0',
+    ) -> str:
+        """Adapt a normal client config for use as an entry→exit cascade tunnel."""
+        effective_allowed = (allowed_ips or '').strip() or '0.0.0.0/0'
+        if effective_allowed in ('0.0.0.0/0, ::/0', '::/0, 0.0.0.0/0'):
+            effective_allowed = '0.0.0.0/0'
+
+        lines = []
+        in_interface = False
+        in_peer = False
+        has_table = False
+        has_mtu = False
+        for raw in (raw_config or '').splitlines():
+            stripped = raw.strip()
+            lower = stripped.lower()
+            if stripped.startswith('[') and stripped.endswith(']'):
+                in_interface = stripped.lower() == '[interface]'
+                in_peer = stripped.lower() == '[peer]'
+                lines.append(stripped)
+                continue
+            if in_interface and lower.startswith('dns') and not keep_dns:
+                continue
+            if in_interface and lower.startswith('table'):
+                has_table = True
+                lines.append('Table = off')
+                continue
+            if in_interface and lower.startswith('mtu'):
+                has_mtu = True
+                lines.append(stripped)
+                continue
+            if lower.startswith('endpoint'):
+                port = '51820'
+                if '=' in stripped:
+                    rhs = stripped.split('=', 1)[1].strip()
+                    if ':' in rhs:
+                        port = rhs.rsplit(':', 1)[-1]
+                host = (endpoint_host or '').strip()
+                if host:
+                    lines.append(f'Endpoint = {host}:{port}')
+                else:
+                    lines.append(stripped)
+                continue
+            if in_peer and lower.startswith('allowedips'):
+                lines.append(f'AllowedIPs = {effective_allowed}')
+                continue
+            lines.append(stripped)
+
+        out = []
+        inserted_iface = False
+        for line in lines:
+            out.append(line)
+            if not inserted_iface and line.strip().lower() == '[interface]':
+                if not has_table:
+                    out.append('Table = off')
+                if not has_mtu:
+                    out.append('MTU = 1280')
+                inserted_iface = True
+        return '\n'.join(out).strip() + '\n'
+
+    @staticmethod
+    def _subnet_contains_ip(subnet: str, ip: str) -> bool:
+        try:
+            net = ipaddress.ip_network(subnet, strict=False)
+            return ipaddress.ip_address(ip) in net
+        except ValueError:
+            return False
+
+    def status(self, entry_protocol: str) -> dict:
+        container = self._container_name(entry_protocol)
+        if not container:
+            return {'enabled': False, 'up': False, 'handshake': False, 'error': 'Unsupported protocol'}
+        conf = self._cascade_conf(entry_protocol)
+        wg_bin = self._wg_binary(entry_protocol)
+        out, _, _ = self.ssh.run_sudo_command(
+            f"docker exec {shlex.quote(container)} bash -lc "
+            f"'echo HAS=$(test -f {shlex.quote(conf)} && echo 1 || echo 0); "
+            f"echo IFACES=$({wg_bin} show interfaces 2>/dev/null); "
+            f"echo HANDSHAKE=$({wg_bin} show cascade latest-handshakes 2>/dev/null | awk \"{{print \\$2}}\" | head -1); "
+            f"echo TRANSFER=$({wg_bin} show cascade transfer 2>/dev/null | head -1); "
+            f"ip rule show 2>/dev/null | head -20; "
+            f"ip route show table 200 2>/dev/null | head -10'"
+        )
+        text = out or ''
+        has_conf = 'HAS=1' in text
+        ifaces_line = ''
+        handshake_ts = 0
+        for line in text.splitlines():
+            if line.startswith('IFACES='):
+                ifaces_line = line.split('=', 1)[1].strip()
+            if line.startswith('HANDSHAKE='):
+                try:
+                    handshake_ts = int(line.split('=', 1)[1].strip() or '0')
+                except ValueError:
+                    handshake_ts = 0
+        up = 'cascade' in ifaces_line.split()
+        handshake_ok = handshake_ts > 0
+        return {
+            'enabled': has_conf,
+            'up': up,
+            'handshake': handshake_ok,
+            'handshake_ts': handshake_ts,
+            'raw': text.strip()[:3000],
+        }
+
+    def _vpn_server_iface(self, entry_protocol: str) -> str:
+        base = self.proto_base(entry_protocol)
+        if base in ('awg_legacy', 'wireguard'):
+            return 'wg0'
+        return 'awg0'
+
+    def _vpn_server_ip(self, entry_protocol: str, container: str) -> str:
+        """IPv4 on awg0/wg0 — traffic from this IP is policy-routed through cascade."""
+        iface = self._vpn_server_iface(entry_protocol)
+        out, _, _ = self.ssh.run_sudo_command(
+            f"docker exec {shlex.quote(container)} sh -c "
+            f"{shlex.quote(f'ip -o -4 addr show dev {iface} 2>/dev/null')}",
+            timeout=15,
+        )
+        for line in (out or '').splitlines():
+            m = re.search(r'\binet\s+(\d+\.\d+\.\d+\.\d+)/\d+', line)
+            if m:
+                return m.group(1)
+        return ''
+
+    @staticmethod
+    def _parse_public_ipv4(text: str) -> str:
+        raw = (text or '').strip()
+        if not raw:
+            return ''
+        for line in reversed(raw.splitlines()):
+            line = line.strip()
+            if re.fullmatch(r'\d+\.\d+\.\d+\.\d+', line):
+                return line
+        m = re.search(r'\b(\d{1,3}(?:\.\d{1,3}){3})\b', raw)
+        return m.group(1) if m else ''
+
+    def _verify_egress(self, container: str, entry_protocol: str, subnet: str) -> dict:
+        """Confirm client-subnet traffic exits via cascade (ryderams-style).
+
+        Bind curl to the VPN server IP on awg0/wg0 (NOT the cascade peer Address).
+        Policy routing only applies to the client subnet — cascade Address must
+        not be used as --interface.
+        """
+        server_ip = self._vpn_server_ip(entry_protocol, container)
+        iface = self._vpn_server_iface(entry_protocol)
+        if not server_ip:
+            return {
+                'ok': False,
+                'skipped': False,
+                'detail': f'Could not read IPv4 on {iface} for egress verify',
+                'bind': '',
+            }
+
+        route_out, _, _ = self.ssh.run_sudo_command(
+            f"docker exec {shlex.quote(container)} sh -c "
+            f"{shlex.quote(f'ip route get 1.1.1.1 from {server_ip} 2>/dev/null | head -1')}",
+            timeout=15,
+        )
+        route_line = (route_out or '').strip()
+        route_via_cascade = bool(re.search(r'\bdev\s+cascade\b', route_line))
+
+        if not route_via_cascade:
+            return {
+                'ok': False,
+                'skipped': False,
+                'detail': (
+                    f'Policy route from {server_ip} does not use cascade iface. '
+                    f'Got: {route_line or "empty"}'
+                ),
+                'bind': server_ip,
+                'route': route_line,
+                'subnet': subnet,
+            }
+
+        has_curl, _, _ = self.ssh.run_sudo_command(
+            f"docker exec {shlex.quote(container)} sh -c "
+            f"{shlex.quote('command -v curl >/dev/null 2>&1 && echo YES')}",
+            timeout=15,
+        )
+        if 'YES' not in (has_curl or ''):
+            return {
+                'ok': True,
+                'skipped': True,
+                'warning': True,
+                'detail': 'curl not installed in container — egress IP check skipped (policy route OK)',
+                'bind': server_ip,
+                'route': route_line,
+            }
+
+        urls = (
+            'https://api.ipify.org',
+            'https://icanhazip.com',
+            'https://ifconfig.me/ip',
+            'http://api.ipify.org',
+            'http://icanhazip.com',
+        )
+        binds = [server_ip, 'cascade']
+        last_detail = 'empty response'
+        for bind in binds:
+            for url in urls:
+                inner = (
+                    f'curl --interface {shlex.quote(bind)} -4 -sS --max-time 12 '
+                    f'{shlex.quote(url)} 2>&1 || true'
+                )
+                egress_out, _, _ = self.ssh.run_sudo_command(
+                    f"docker exec {shlex.quote(container)} sh -c {shlex.quote(inner)}",
+                    timeout=25,
+                )
+                egress_ip = self._parse_public_ipv4(egress_out or '')
+                if egress_ip:
+                    return {
+                        'ok': True,
+                        'skipped': False,
+                        'egress_ip': egress_ip,
+                        'bind': bind,
+                        'url': url,
+                        'route': route_line,
+                        'detail': f'{egress_ip} via {bind}',
+                    }
+                last_detail = ((egress_out or '') or 'empty response').strip()[:300]
+
+        # Handshake + policy route OK; echo services often fail from VPS — keep cascade up.
+        return {
+            'ok': True,
+            'skipped': False,
+            'warning': True,
+            'detail': (
+                f'Policy route OK via cascade, but public-IP curl failed '
+                f'(bind {server_ip}). Last: {last_detail or "empty response"}'
+            ),
+            'bind': server_ip,
+            'route': route_line,
+            'subnet': subnet,
+        }
+
+    def _vpn_subnet(self, entry_protocol: str, container: str, override: str = '') -> str:
+        if override and re.match(r'^\d+\.\d+\.\d+\.\d+/\d+$', override.strip()):
+            return override.strip()
+        conf = self._server_conf(entry_protocol)
+        out, _, _ = self.ssh.run_sudo_command(
+            f"docker exec {shlex.quote(container)} bash -lc "
+            f"\"grep -E '^Address' {shlex.quote(conf)} | head -1 | cut -d= -f2 | tr -d ' '\""
+        )
+        addr = (out or '').strip()
+        if not addr:
+            return '10.8.1.0/24'
+        if '/' in addr:
+            ip, cidr = addr.split('/', 1)
+            parts = ip.split('.')
+            if len(parts) == 4 and cidr.isdigit() and int(cidr) >= 24:
+                return f"{parts[0]}.{parts[1]}.{parts[2]}.0/{cidr}"
+            return addr
+        parts = addr.split('.')
+        if len(parts) == 4:
+            return f"{parts[0]}.{parts[1]}.{parts[2]}.0/24"
+        return '10.8.1.0/24'
+
+    def ensure_exit_return_route(self, protocol: str, peer_ip: str) -> dict:
+        """Add /32 return route for the cascade peer on the exit container (ryderams vps2)."""
+        peer_ip = (peer_ip or '').strip().split('/', 1)[0]
+        if not re.match(r'^\d+\.\d+\.\d+\.\d+$', peer_ip):
+            return {'status': 'error', 'message': 'Invalid cascade peer IP'}
+        container = self._container_name(protocol)
+        if not container:
+            return {'status': 'error', 'message': 'Unsupported exit protocol'}
+        iface = self._server_iface(protocol)
+        route_cmd = f'ip route replace {peer_ip}/32 dev {iface}'
+        script = f"""#!/bin/bash
+set -e
+START=/opt/amnezia/start.sh
+{route_cmd} 2>/dev/null || true
+[ -f "$START" ] || {{ echo CASCADE_EXIT_ROUTE_OK; exit 0; }}
+if grep -q '{EXIT_ROUTE_BEGIN}' "$START" 2>/dev/null; then
+  tmp=$(mktemp)
+  awk -v b='{EXIT_ROUTE_BEGIN}' -v e='{EXIT_ROUTE_END}' '
+    $0==b {{skip=1; next}}
+    $0==e {{skip=0; next}}
+    !skip {{print}}
+  ' "$START" > "$tmp" && mv "$tmp" "$START"
+fi
+printf '\\n%s\\n%s\\n%s\\n' '{EXIT_ROUTE_BEGIN}' '{route_cmd} || true' '{EXIT_ROUTE_END}' >> "$START"
+echo CASCADE_EXIT_ROUTE_OK
+"""
+        self.ssh.upload_file(script, '/tmp/_amnz_cascade_exit_route.sh')
+        out, err, code = self.ssh.run_sudo_command(
+            f"docker cp /tmp/_amnz_cascade_exit_route.sh {shlex.quote(container)}:/tmp/_exit_route.sh && "
+            f"docker exec {shlex.quote(container)} bash /tmp/_exit_route.sh && "
+            f"docker exec {shlex.quote(container)} rm -f /tmp/_exit_route.sh",
+            timeout=60,
+        )
+        self.ssh.run_command('rm -f /tmp/_amnz_cascade_exit_route.sh')
+        if code != 0 or 'CASCADE_EXIT_ROUTE_OK' not in (out or ''):
+            return {
+                'status': 'error',
+                'message': ((err or out) or 'Failed to set exit return route').strip()[:400],
+            }
+        return {'status': 'success', 'peer_ip': peer_ip, 'iface': iface}
+
+    def apply(
+        self,
+        entry_protocol: str,
+        exit_client_config: str,
+        exit_host: str,
+        settings: Optional[dict] = None,
+    ) -> dict:
+        opts = normalize_settings(settings)
+        container = self._container_name(entry_protocol)
+        if not container:
+            return {'status': 'error', 'message': 'Unsupported entry protocol'}
+
+        exists, _, code = self.ssh.run_sudo_command(
+            f"docker inspect -f '{{{{.State.Running}}}}' {shlex.quote(container)} 2>/dev/null"
+        )
+        if code != 0 or exists.strip().lower() != 'true':
+            return {'status': 'error', 'message': f'Entry container {container} is not running'}
+
+        cascade_conf_path = self._cascade_conf(entry_protocol)
+        cascade_up_path = self._cascade_up(entry_protocol)
+        cascade_conf = self.prepare_exit_client_config(
+            exit_client_config,
+            exit_host,
+            keep_dns=bool(opts['keep_exit_dns']),
+            allowed_ips=str(opts['allowed_ips']),
+        )
+        endpoint_host = self._extract_endpoint_host(cascade_conf) or exit_host
+        cascade_addr_cidr = self._extract_address_cidr(cascade_conf)
+        cascade_peer_ip = self._extract_address_ip(cascade_conf)
+        subnet = self._vpn_subnet(entry_protocol, container, opts.get('vpn_subnet_override') or '')
+
+        if cascade_peer_ip and self._subnet_contains_ip(subnet, cascade_peer_ip):
+            return {
+                'status': 'error',
+                'message': (
+                    f'Cascade tunnel Address {cascade_addr_cidr or cascade_peer_ip} is inside '
+                    f'entry client subnet {subnet}. Use a different VPN subnet on the exit server '
+                    f'(e.g. 10.99.0.0/24) as in ryderams/amneziawg-cascade.'
+                ),
+            }
+
+        wg_bin = self._wg_binary(entry_protocol)
+        quick_bin = self._quick_binary(entry_protocol)
+        conf_dir = self._conf_dir(entry_protocol)
+        table_id = int(opts['table_id'])
+        prio = int(opts['rule_priority'])
+        hs_timeout = int(opts['handshake_timeout_sec'])
+
+        pin_block = ''
+        if opts['pin_exit_route']:
+            pin_block = f"""
+EXIT_IP="$EXIT_HOST"
+if ! printf '%s' "$EXIT_IP" | grep -Eq '^[0-9]+\\.[0-9]+\\.[0-9]+\\.[0-9]+$'; then
+  EXIT_IP=$(getent ahostsv4 "$EXIT_HOST" 2>/dev/null | awk '{{print $1; exit}}')
+  if [ -z "$EXIT_IP" ]; then
+    EXIT_IP=$(python3 - <<'PY' 2>/dev/null || true
+import socket
+print(socket.gethostbyname("{endpoint_host}"))
+PY
+)
+  fi
+fi
+GW=$(ip route | awk '/default/ {{print $3; exit}}')
+DEV=$(ip route | awk '/default/ {{print $5; exit}}')
+if [ -n "$EXIT_IP" ] && [ -n "$GW" ] && [ -n "$DEV" ]; then
+  ip route replace "$EXIT_IP/32" via "$GW" dev "$DEV" 2>/dev/null || true
+fi
+"""
+
+        remove_masq = ''
+        if opts['remove_eth_masquerade']:
+            remove_masq = f"""
+for ETH in eth0 eth1 eth2 ens3 ens5 enp0s3 enp1s0; do
+  while iptables -t nat -D POSTROUTING -s "$SUBNET" -o "$ETH" -j MASQUERADE 2>/dev/null; do :; done
+done
+"""
+
+        forward_block = ''
+        if opts['force_forward']:
+            forward_block = f"""
+sysctl -w net.ipv4.ip_forward=1 >/dev/null 2>&1 || true
+for SRC_IF in awg0 wg0; do
+  iptables -C FORWARD -i "$SRC_IF" -o "$IFACE" -j ACCEPT 2>/dev/null \\
+    || iptables -I FORWARD 1 -i "$SRC_IF" -o "$IFACE" -j ACCEPT 2>/dev/null || true
+  iptables -C FORWARD -i "$IFACE" -o "$SRC_IF" -j ACCEPT 2>/dev/null \\
+    || iptables -I FORWARD 1 -i "$IFACE" -o "$SRC_IF" -j ACCEPT 2>/dev/null || true
+done
+iptables -C FORWARD -i "$IFACE" -m state --state RELATED,ESTABLISHED -j ACCEPT 2>/dev/null \\
+  || iptables -I FORWARD 1 -i "$IFACE" -m state --state RELATED,ESTABLISHED -j ACCEPT
+"""
+
+        mss_block = ''
+        if opts['mss_clamp']:
+            mss_block = """
+iptables -t mangle -C FORWARD -p tcp --tcp-flags SYN,RST SYN -j TCPMSS --clamp-mss-to-pmtu 2>/dev/null \\
+  || iptables -t mangle -A FORWARD -p tcp --tcp-flags SYN,RST SYN -j TCPMSS --clamp-mss-to-pmtu
+"""
+
+        handshake_block = ''
+        if opts['wait_handshake']:
+            handshake_block = f"""
+OK=0
+for i in $(seq 1 {hs_timeout}); do
+  HS=$({shlex.quote(wg_bin)} show "$IFACE" latest-handshakes 2>/dev/null | awk '{{print $2}}' | head -1)
+  if [ -n "$HS" ] && [ "$HS" != "0" ]; then OK=1; break; fi
+  sleep 1
+done
+if [ "$OK" != "1" ]; then
+  echo "CASCADE_NO_HANDSHAKE" >&2
+  echo "Tunnel interface is up but exit peer did not handshake. Check exit server / UDP port / keys." >&2
+  exit 42
+fi
+"""
+
+        up_script = f"""#!/bin/bash
+{CASCADE_MARKER}
+set -e
+CONF={shlex.quote(cascade_conf_path)}
+QUICK={shlex.quote(quick_bin)}
+SUBNET={shlex.quote(subnet)}
+EXIT_HOST={shlex.quote(endpoint_host)}
+IFACE=cascade
+TABLE={table_id}
+PRIO={prio}
+
+"$QUICK" down "$CONF" 2>/dev/null || true
+ip link delete "$IFACE" 2>/dev/null || true
+ip rule del from "$SUBNET" table "$TABLE" 2>/dev/null || true
+ip route flush table "$TABLE" 2>/dev/null || true
+
+{pin_block}
+
+"$QUICK" up "$CONF"
+
+ip route replace default dev "$IFACE" table "$TABLE" 2>/dev/null || ip route add default dev "$IFACE" table "$TABLE"
+ip rule del from "$SUBNET" table "$TABLE" 2>/dev/null || true
+ip rule add from "$SUBNET" table "$TABLE" priority "$PRIO"
+
+{remove_masq}
+{forward_block}
+iptables -t nat -C POSTROUTING -s "$SUBNET" -o "$IFACE" -j MASQUERADE 2>/dev/null \\
+  || iptables -t nat -A POSTROUTING -s "$SUBNET" -o "$IFACE" -j MASQUERADE
+{mss_block}
+{handshake_block}
+
+echo CASCADE_UP_OK
+"""
+
+        self.ssh.run_sudo_command(f"docker exec {shlex.quote(container)} mkdir -p {shlex.quote(conf_dir)}")
+        self.ssh.upload_file(cascade_conf, '/tmp/_amnz_cascade.conf')
+        self.ssh.upload_file(up_script, '/tmp/_amnz_cascade_up.sh')
+        self.ssh.run_sudo_command(
+            f"docker cp /tmp/_amnz_cascade.conf {shlex.quote(container)}:{shlex.quote(cascade_conf_path)} && "
+            f"docker cp /tmp/_amnz_cascade_up.sh {shlex.quote(container)}:{shlex.quote(cascade_up_path)} && "
+            f"docker exec {shlex.quote(container)} chmod 644 {shlex.quote(cascade_conf_path)} && "
+            f"docker exec {shlex.quote(container)} chmod +x {shlex.quote(cascade_up_path)}"
+        )
+        self.ssh.run_command('rm -f /tmp/_amnz_cascade.conf /tmp/_amnz_cascade_up.sh')
+
+        self._ensure_start_hook(container, cascade_up_path)
+
+        out, err, code = self.ssh.run_sudo_command(
+            f"docker exec {shlex.quote(container)} bash {shlex.quote(cascade_up_path)}",
+            timeout=max(90, hs_timeout + 40),
+        )
+        combined = ((out or '') + '\n' + (err or '')).strip()
+        if code != 0 or 'CASCADE_UP_OK' not in (out or ''):
+            msg = combined
+            if 'CASCADE_NO_HANDSHAKE' in combined:
+                msg = (
+                    'Туннель к серверу выхода поднят, но handshake не прошёл. '
+                    'Проверьте, что на выходе открыт UDP-порт, протокол совпадает, '
+                    'и входной сервер может достучаться до IP выхода.'
+                )
+            return {
+                'status': 'error',
+                'message': (msg or 'Failed to bring cascade interface up').strip()[:900],
+                'log': combined[:2000],
+            }
+
+        st = self.status(entry_protocol)
+        handshake_ok = bool(st.get('handshake'))
+
+        egress_info = {}
+        if opts.get('verify_egress', True) and handshake_ok:
+            egress_info = self._verify_egress(container, entry_protocol, subnet)
+            if not egress_info.get('ok'):
+                try:
+                    self.disable(entry_protocol, settings=opts)
+                except Exception:
+                    pass
+                bind = egress_info.get('bind') or 'awg0'
+                detail = egress_info.get('detail') or 'empty response'
+                route = egress_info.get('route') or ''
+                return {
+                    'status': 'error',
+                    'message': (
+                        'Cascade handshake OK but egress verify failed '
+                        f'(curl --interface {bind} via client subnet {subnet}). '
+                        f'Detail: {detail}'
+                        + (f' Route: {route}' if route else '')
+                    ),
+                    'handshake': True,
+                    'up': bool(st.get('up')),
+                    'egress': egress_info,
+                    'log': combined[:1500],
+                }
+
+        return {
+            'status': 'success',
+            'subnet': subnet,
+            'endpoint': endpoint_host,
+            'container': container,
+            'cascade_peer_ip': cascade_peer_ip,
+            'cascade_address': cascade_addr_cidr,
+            'up': bool(st.get('up')),
+            'handshake': handshake_ok,
+            'egress': egress_info or None,
+            'warning': (egress_info or {}).get('detail') if (egress_info or {}).get('warning') else None,
+            'settings': opts,
+            'applied_at': datetime.now().isoformat(timespec='seconds'),
+            'diagnostics': st.get('raw', '')[:1500],
+        }
+
+    def _ensure_start_hook(self, container: str, cascade_up_path: str) -> None:
+        marker = CASCADE_MARKER
+        installer = f"""#!/bin/bash
+set -e
+START=/opt/amnezia/start.sh
+[ -f "$START" ] || exit 0
+grep -q '{marker}' "$START" 2>/dev/null && exit 0
+printf '\\n%s\\n' '{marker}' >> "$START"
+printf '%s\\n' 'if [ -x {cascade_up_path} ]; then bash {cascade_up_path} || true; fi' >> "$START"
+"""
+        self.ssh.upload_file(installer, '/tmp/_amnz_cascade_hook.sh')
+        self.ssh.run_sudo_command(
+            f"docker cp /tmp/_amnz_cascade_hook.sh {shlex.quote(container)}:/tmp/_hook.sh && "
+            f"docker exec {shlex.quote(container)} bash /tmp/_hook.sh && "
+            f"docker exec {shlex.quote(container)} rm -f /tmp/_hook.sh"
+        )
+        self.ssh.run_command('rm -f /tmp/_amnz_cascade_hook.sh')
+
+    def disable(self, entry_protocol: str, settings: Optional[dict] = None) -> dict:
+        opts = normalize_settings(settings)
+        container = self._container_name(entry_protocol)
+        if not container:
+            return {'status': 'error', 'message': 'Unsupported entry protocol'}
+        conf = self._cascade_conf(entry_protocol)
+        up = self._cascade_up(entry_protocol)
+        quick_bin = self._quick_binary(entry_protocol)
+        table_id = int(opts['table_id'])
+        script = f"""#!/bin/bash
+set +e
+QUICK={shlex.quote(quick_bin)}
+CONF={shlex.quote(conf)}
+UP={shlex.quote(up)}
+TABLE={table_id}
+"$QUICK" down "$CONF" 2>/dev/null
+ip link delete cascade 2>/dev/null
+ip rule del table "$TABLE" 2>/dev/null
+ip rule del table "$TABLE" 2>/dev/null
+ip route flush table "$TABLE" 2>/dev/null
+rm -f "$CONF" "$UP"
+echo CASCADE_DOWN_OK
+"""
+        self.ssh.upload_file(script, '/tmp/_amnz_cascade_down.sh')
+        out, err, code = self.ssh.run_sudo_command(
+            f"docker cp /tmp/_amnz_cascade_down.sh {shlex.quote(container)}:/tmp/_cascade_down.sh && "
+            f"docker exec {shlex.quote(container)} bash /tmp/_cascade_down.sh && "
+            f"docker exec {shlex.quote(container)} rm -f /tmp/_cascade_down.sh",
+            timeout=60,
+        )
+        self.ssh.run_command('rm -f /tmp/_amnz_cascade_down.sh')
+        if code != 0 and 'CASCADE_DOWN_OK' not in (out or ''):
+            return {'status': 'success', 'message': (err or out or 'Cascade cleared (best effort)').strip()[:400]}
+        return {'status': 'success'}

managers/naiveproxy_manager.py

@@ -232,9 +232,13 @@ class NaiveProxyManager:
             # Keep a non-shared bootstrap user so the proxy is never open
             auth_lines = [f'    basic_auth bootstrap {_rand_token(24)}']
         auth_block = '\n'.join(auth_lines)
+        # probe_resistance looks like a fake domain to browsers
         probe = (probe_path or _rand_token(12)).strip('/')
+        if '.' not in probe:
+            probe = f'{probe}.com'
         return f"""{{
   order forward_proxy before file_server
+  admin off
   log {{
     exclude http.log.error
   }}
@@ -242,16 +246,14 @@ class NaiveProxyManager:
 :443, {domain} {{
   tls {email}
   encode
-  route {{
-    forward_proxy {{
+  forward_proxy {{
 {auth_block}
-      hide_ip
-      hide_via
-      probe_resistance {probe}
-    }}
-    file_server {{
-      root /var/www/html
-    }}
+    hide_ip
+    hide_via
+    probe_resistance {probe}
+  }}
+  file_server {{
+    root /var/www/html
   }}
 }}
 """
@@ -398,13 +400,21 @@ CMD ["caddy", "run", "--config", "/etc/caddy/Caddyfile", "--adapter", "caddyfile
             self._start_container()
 
     def _build_share_uri(self, domain, username, password, name, port=443):
+        """v2rayN / NekoRay / sing-box compatible share link.
+
+        Always include an explicit port — without `:443` v2rayN often treats
+        the port as empty/80 and shows «Свойство Порт недопустимо» / SSL errors.
+        """
+        # Keep credentials unescaped when alphanumeric (our generator); quote otherwise.
         user = quote(username or '', safe='')
         pw = quote(password or '', safe='')
-        host = domain or ''
+        host = (domain or '').strip().lower()
         port = int(port or 443)
-        authority = f'{user}:{pw}@{host}' if port == 443 else f'{user}:{pw}@{host}:{port}'
-        fragment = quote(name or 'naiveproxy', safe='')
-        return f'naive+https://{authority}#{fragment}'
+        if port < 1 or port > 65535:
+            port = 443
+        # Remark: ASCII-safe, no spaces that break some importers
+        remark = re.sub(r'[^\w.\-]+', '-', (name or 'naiveproxy').strip())[:48] or 'naiveproxy'
+        return f'naive+https://{user}:{pw}@{host}:{port}#{remark}'
 
     # ===================== INSTALL / REMOVE =====================
 

templates/server.html

@@ -1,4 +1,4 @@
-{% extends "base.html" %}
+{% extends "base.html" %}
 {% from "macros/icons.html" import icon %}
 
 {% block title_extra %} — {{ server.name }}{% endblock %}
@@ -157,6 +157,153 @@
     </div>
 </div>
 
+<!-- Cascade (double VPN) -->
+<section class="card" id="cascadeSection" style="margin-bottom: var(--space-xl);">
+    <div class="card-header" style="align-items:flex-start; flex-wrap:wrap; gap:var(--space-sm);">
+        <div>
+            <h2 class="card-title" style="margin:0;">{{ _('cascade_title') }}</h2>
+            <p class="form-hint" style="margin:var(--space-xs) 0 0;">{{ _('cascade_desc') }}</p>
+        </div>
+        <span class="badge badge-warn" id="cascadeStatusBadge">{{ _('cascade_off') }}</span>
+    </div>
+    <div style="padding: 0 var(--space-md) var(--space-md);">
+        <div class="grid" style="display:grid; grid-template-columns:1fr 1fr; gap:var(--space-md);">
+            <div class="form-group">
+                <label class="form-label">{{ _('cascade_entry_protocol') }}</label>
+                <select class="form-select" id="cascadeEntryProtocol">
+                    <option value="awg2" selected>AmneziaWG 2.0</option>
+                    <option value="awg">AmneziaWG</option>
+                    <option value="awg_legacy">AWG Legacy</option>
+                    <option value="wireguard">WireGuard</option>
+                </select>
+            </div>
+            <div class="form-group">
+                <label class="form-label">{{ _('cascade_exit_server') }}</label>
+                <select class="form-select" id="cascadeExitServer" onchange="fillCascadeExitProtocols()">
+                    <option value="">{{ _('cascade_exit_server_none') }}</option>
+                    {% for s in all_servers %}
+                    {% if loop.index0 != server_id %}
+                    <option value="{{ loop.index0 }}"
+                        data-protocols="{% for k in (s.protocols or {}).keys() %}{{ k }}{% if not loop.last %},{% endif %}{% endfor %}">
+                        {{ s.name or s.host }} ({{ s.host }})
+                    </option>
+                    {% endif %}
+                    {% endfor %}
+                </select>
+            </div>
+            <div class="form-group">
+                <label class="form-label">{{ _('cascade_exit_protocol') }}</label>
+                <select class="form-select" id="cascadeExitProtocol">
+                    <option value="awg2" selected>AmneziaWG 2.0</option>
+                    <option value="awg">AmneziaWG</option>
+                    <option value="awg_legacy">AWG Legacy</option>
+                    <option value="wireguard">WireGuard</option>
+                </select>
+            </div>
+        </div>
+        <div class="form-hint" style="margin-bottom:var(--space-sm);">{{ _('cascade_hint') }}</div>
+        <div class="form-hint" style="margin-bottom:var(--space-sm);">{{ _('cascade_client_note') }}</div>
+        <div class="form-hint" style="margin-bottom:var(--space-md);">{{ _('cascade_security_note') }}</div>
+
+        <details id="cascadeSettingsPanel" open style="margin-bottom:var(--space-md); border:1px solid var(--border); border-radius:var(--radius-md); padding:var(--space-sm) var(--space-md);">
+            <summary style="cursor:pointer; font-weight:600; margin-bottom:var(--space-sm);">{{ _('cascade_settings_title') }}</summary>
+            <p class="form-hint" style="margin:0 0 var(--space-md);">{{ _('cascade_settings_desc') }}</p>
+            <div class="grid" style="display:grid; grid-template-columns:1fr 1fr; gap:var(--space-sm) var(--space-md);">
+                <label class="form-check" style="display:flex; gap:var(--space-sm); align-items:flex-start;">
+                    <input type="checkbox" id="cascadePinExitRoute" checked>
+                    <span>
+                        <strong>{{ _('cascade_opt_pin_exit') }}</strong>
+                        <span class="form-hint" style="display:block;">{{ _('cascade_opt_pin_exit_hint') }}</span>
+                    </span>
+                </label>
+                <label class="form-check" style="display:flex; gap:var(--space-sm); align-items:flex-start;">
+                    <input type="checkbox" id="cascadeRemoveEthMasq" checked>
+                    <span>
+                        <strong>{{ _('cascade_opt_remove_eth_masq') }}</strong>
+                        <span class="form-hint" style="display:block;">{{ _('cascade_opt_remove_eth_masq_hint') }}</span>
+                    </span>
+                </label>
+                <label class="form-check" style="display:flex; gap:var(--space-sm); align-items:flex-start;">
+                    <input type="checkbox" id="cascadeForceForward" checked>
+                    <span>
+                        <strong>{{ _('cascade_opt_force_forward') }}</strong>
+                        <span class="form-hint" style="display:block;">{{ _('cascade_opt_force_forward_hint') }}</span>
+                    </span>
+                </label>
+                <label class="form-check" style="display:flex; gap:var(--space-sm); align-items:flex-start;">
+                    <input type="checkbox" id="cascadeMssClamp" checked>
+                    <span>
+                        <strong>{{ _('cascade_opt_mss_clamp') }}</strong>
+                        <span class="form-hint" style="display:block;">{{ _('cascade_opt_mss_clamp_hint') }}</span>
+                    </span>
+                </label>
+                <label class="form-check" style="display:flex; gap:var(--space-sm); align-items:flex-start;">
+                    <input type="checkbox" id="cascadeWaitHandshake" checked>
+                    <span>
+                        <strong>{{ _('cascade_opt_wait_handshake') }}</strong>
+                        <span class="form-hint" style="display:block;">{{ _('cascade_opt_wait_handshake_hint') }}</span>
+                    </span>
+                </label>
+                <label class="form-check" style="display:flex; gap:var(--space-sm); align-items:flex-start;">
+                    <input type="checkbox" id="cascadeVerifyEgress" checked>
+                    <span>
+                        <strong>{{ _('cascade_verify_egress') }}</strong>
+                        <span class="form-hint" style="display:block;">{{ _('cascade_verify_egress_hint') }}</span>
+                    </span>
+                </label>
+                <label class="form-check" style="display:flex; gap:var(--space-sm); align-items:flex-start;">
+                    <input type="checkbox" id="cascadeKeepExitDns">
+                    <span>
+                        <strong>{{ _('cascade_opt_keep_dns') }}</strong>
+                        <span class="form-hint" style="display:block;">{{ _('cascade_opt_keep_dns_hint') }}</span>
+                    </span>
+                </label>
+            </div>
+            <div class="grid" style="display:grid; grid-template-columns:1fr 1fr 1fr; gap:var(--space-md); margin-top:var(--space-md);">
+                <div class="form-group" style="margin:0;">
+                    <label class="form-label" for="cascadeHandshakeTimeout">{{ _('cascade_opt_handshake_timeout') }}</label>
+                    <input type="number" class="form-input" id="cascadeHandshakeTimeout" min="5" max="120" value="25">
+                </div>
+                <div class="form-group" style="margin:0;">
+                    <label class="form-label" for="cascadeTableId">{{ _('cascade_opt_table_id') }}</label>
+                    <input type="number" class="form-input" id="cascadeTableId" min="1" max="252" value="200">
+                </div>
+                <div class="form-group" style="margin:0;">
+                    <label class="form-label" for="cascadeRulePriority">{{ _('cascade_opt_rule_priority') }}</label>
+                    <input type="number" class="form-input" id="cascadeRulePriority" min="1" max="32765" value="100">
+                </div>
+            </div>
+            <div class="grid" style="display:grid; grid-template-columns:1fr 1fr; gap:var(--space-md); margin-top:var(--space-md);">
+                <div class="form-group" style="margin:0;">
+                    <label class="form-label" for="cascadeAllowedIps">{{ _('cascade_opt_allowed_ips') }}</label>
+                    <input type="text" class="form-input" id="cascadeAllowedIps" value="0.0.0.0/0">
+                    <span class="form-hint">{{ _('cascade_opt_allowed_ips_hint') }}</span>
+                </div>
+                <div class="form-group" style="margin:0;">
+                    <label class="form-label" for="cascadeVpnSubnet">{{ _('cascade_opt_vpn_subnet') }}</label>
+                    <input type="text" class="form-input" id="cascadeVpnSubnet" placeholder="10.8.1.0/24" value="">
+                    <span class="form-hint">{{ _('cascade_opt_vpn_subnet_hint') }}</span>
+                </div>
+            </div>
+        </details>
+
+        <div id="cascadeDiagBox" class="hidden" style="margin-bottom:var(--space-md); padding:var(--space-sm) var(--space-md); background:var(--bg-muted, rgba(0,0,0,.04)); border-radius:var(--radius-md); font-family:ui-monospace,monospace; font-size:12px; white-space:pre-wrap; max-height:160px; overflow:auto;"></div>
+
+        <div class="flex gap-sm" style="flex-wrap:wrap;">
+            <button type="button" class="btn btn-primary" id="cascadeEnableBtn" onclick="enableCascade()">
+                {{ _('cascade_enable') }}
+            </button>
+            <button type="button" class="btn btn-secondary" id="cascadeDisableBtn" onclick="disableCascade()">
+                {{ _('cascade_disable') }}
+            </button>
+            <button type="button" class="btn btn-secondary" onclick="loadCascade()">{{ _('refresh') }}</button>
+        </div>
+        <div id="cascadeBusy" class="hidden" style="display:none; align-items:center; gap:var(--space-sm); margin-top:var(--space-md);">
+            <div class="spinner" style="width:18px;height:18px;border-width:2px;"></div>
+            <span id="cascadeBusyText">{{ _('cascade_working') }}</span>
+        </div>
+    </div>
+</section>
 <!-- Installed Applications Section -->
 
 <div class="apps-loading" id="installedAppsLoading">
@@ -325,10 +472,11 @@
             <div class="protocol-icon">{{ icon('link') }}</div>
             <div class="flex gap-sm" id="naiveproxy-ctrl" style="display:none!important;"></div>
         </div>
-        <div class="protocol-name">NaiveProxy</div>
-        <div class="protocol-desc">
-            {{ _('naiveproxy_desc') }}
-        </div>
+            <div class="protocol-name">NaiveProxy <span
+                style="font-size:0.65rem; background:var(--success, #16a34a); color:#fff; padding:2px 6px; border-radius:8px; vertical-align:middle;">STABLE</span></div>
+            <div class="protocol-desc">
+                {{ _('naiveproxy_desc') }}
+            </div>
         <div class="protocol-status" id="naiveproxy-status">
             <span class="badge badge-warn"><span class="badge-dot"></span> {{ _('not_checked') }}</span>
         </div>
@@ -743,6 +891,7 @@
                 </div>
                 <div class="form-hint">{{ _('naiveproxy_install_hint') }}</div>
                 <div class="form-hint" style="margin-top: var(--space-sm);">{{ _('naiveproxy_port_hint') }}</div>
+                <div class="form-hint" style="margin-top: var(--space-sm); padding: var(--space-sm) var(--space-md); border-radius: var(--radius-sm); background: rgba(234,179,8,0.12); border: 1px solid rgba(234,179,8,0.35);">{{ _('naiveproxy_client_hint') }}</div>
             </div>
 
             <div class="modal-footer">
@@ -986,6 +1135,7 @@
         <div class="config-panel active" id="panel-conf">
             <div class="config-display">
                 <div class="config-text" id="configText"></div>
+                <div class="form-hint hidden" id="configClientHint" style="margin-top: var(--space-sm);"></div>
                 <div class="config-actions">
                     <button class="btn btn-secondary btn-sm" onclick="copyToClipboard(currentConfig)" style="flex:1">
                         {{ _('copy') }}
@@ -1097,7 +1247,7 @@
         { proto: 'xray', category: 'protocols', icon: 'zap', title: 'Xray (VLESS-Reality)', descKey: 'xray_desc' },
         { proto: 'telemt', category: 'protocols', icon: 'plane', title: 'Telemt (Telegram Proxy)', descKey: 'telemt_desc' },
         { proto: 'hysteria', category: 'protocols', icon: 'refresh', title: 'Hysteria 2', descKey: 'hysteria_desc' },
-        { proto: 'naiveproxy', category: 'protocols', icon: 'link', title: 'NaiveProxy', descKey: 'naiveproxy_desc' },
+        { proto: 'naiveproxy', category: 'protocols', icon: 'link', title: 'NaiveProxy', descKey: 'naiveproxy_desc', badge: 'STABLE' },
         { proto: 'wireguard', category: 'protocols', icon: 'lock', title: 'WireGuard', descKey: 'wireguard_desc' },
         { proto: 'dns', category: 'services', icon: 'search', title: 'AmneziaDNS', descKey: 'dns_desc' },
         { proto: 'adguard', category: 'services', icon: 'shield-check', title: 'AdGuard Home', descKey: 'adguard_desc' },
@@ -1426,6 +1576,7 @@
             }
             updateStatusCounts(data.protocols || {});
             showToast(_('server_check_complete'), 'success');
+            loadCascade();
         } catch (err) {
             showToast(_('error') + ': ' + err.message, 'error');
             const statusDiv = document.getElementById('serverStatus');
@@ -2840,6 +2991,16 @@
                 document.getElementById('configModalTitle').textContent = `${_('config')} — ${connName}`;
                 document.getElementById('configText').textContent = result.config;
                 document.getElementById('vpnLinkText').textContent = currentVpnLink;
+                const hintEl = document.getElementById('configClientHint');
+                if (hintEl) {
+                    if (protoBase(proto) === 'naiveproxy') {
+                        hintEl.textContent = _('naiveproxy_client_hint');
+                        hintEl.classList.remove('hidden');
+                    } else {
+                        hintEl.textContent = '';
+                        hintEl.classList.add('hidden');
+                    }
+                }
                 switchConfigTab('conf');
                 openModal('configModal');
                 generateQR(result.config);
@@ -2952,8 +3113,185 @@
     }
 
 
+
+    // ========== Cascade (double VPN) ==========
+    const CASCADE_PROTOS = ['awg2', 'awg', 'awg_legacy', 'wireguard'];
+
+    function fillCascadeExitProtocols() {
+        const sel = document.getElementById('cascadeExitServer');
+        const opt = sel.options[sel.selectedIndex];
+        const protoSel = document.getElementById('cascadeExitProtocol');
+        const raw = (opt && opt.dataset.protocols) ? opt.dataset.protocols.split(',').filter(Boolean) : [];
+        const available = raw.filter(p => CASCADE_PROTOS.includes(protoBase(p)));
+        const prev = protoSel.value;
+        protoSel.innerHTML = '';
+        const list = available.length ? available : CASCADE_PROTOS;
+        list.forEach(p => {
+            const o = document.createElement('option');
+            o.value = p;
+            o.textContent = getProtoTitle(p);
+            protoSel.appendChild(o);
+        });
+        if (list.includes(prev)) protoSel.value = prev;
+        else if (list.includes('awg2')) protoSel.value = 'awg2';
+    }
+
+    function setCascadeBusy(on, text) {
+        const busy = document.getElementById('cascadeBusy');
+        const busyText = document.getElementById('cascadeBusyText');
+        const en = document.getElementById('cascadeEnableBtn');
+        const dis = document.getElementById('cascadeDisableBtn');
+        if (busyText && text) busyText.textContent = text;
+        if (busy) {
+            busy.classList.toggle('hidden', !on);
+            busy.style.display = on ? 'flex' : 'none';
+        }
+        if (en) en.disabled = !!on;
+        if (dis) dis.disabled = !!on;
+    }
+
+    function cascadeBool(id, fallback) {
+        const el = document.getElementById(id);
+        return el ? !!el.checked : !!fallback;
+    }
+
+    function cascadeNum(id, fallback) {
+        const el = document.getElementById(id);
+        const n = el ? parseInt(el.value, 10) : NaN;
+        return Number.isFinite(n) ? n : fallback;
+    }
+
+    function collectCascadeSettings() {
+        return {
+            pin_exit_route: cascadeBool('cascadePinExitRoute', true),
+            remove_eth_masquerade: cascadeBool('cascadeRemoveEthMasq', true),
+            force_forward: cascadeBool('cascadeForceForward', true),
+            mss_clamp: cascadeBool('cascadeMssClamp', true),
+            wait_handshake: cascadeBool('cascadeWaitHandshake', true),
+            verify_egress: cascadeBool('cascadeVerifyEgress', true),
+            keep_exit_dns: cascadeBool('cascadeKeepExitDns', false),
+            handshake_timeout_sec: cascadeNum('cascadeHandshakeTimeout', 25),
+            table_id: cascadeNum('cascadeTableId', 200),
+            rule_priority: cascadeNum('cascadeRulePriority', 100),
+            allowed_ips: (document.getElementById('cascadeAllowedIps') || {}).value || '0.0.0.0/0',
+            vpn_subnet_override: (document.getElementById('cascadeVpnSubnet') || {}).value || '',
+        };
+    }
+
+    function applyCascadeSettingsToForm(settings, defaults) {
+        const s = Object.assign({}, defaults || {}, settings || {});
+        const setCheck = (id, val) => { const el = document.getElementById(id); if (el) el.checked = !!val; };
+        const setVal = (id, val) => { const el = document.getElementById(id); if (el && val !== undefined && val !== null) el.value = val; };
+        setCheck('cascadePinExitRoute', s.pin_exit_route !== false);
+        setCheck('cascadeRemoveEthMasq', s.remove_eth_masquerade !== false);
+        setCheck('cascadeForceForward', s.force_forward !== false);
+        setCheck('cascadeMssClamp', s.mss_clamp !== false);
+        setCheck('cascadeWaitHandshake', s.wait_handshake !== false);
+        setCheck('cascadeVerifyEgress', s.verify_egress !== false);
+        setCheck('cascadeKeepExitDns', !!s.keep_exit_dns);
+        setVal('cascadeHandshakeTimeout', s.handshake_timeout_sec ?? 25);
+        setVal('cascadeTableId', s.table_id ?? 200);
+        setVal('cascadeRulePriority', s.rule_priority ?? 100);
+        setVal('cascadeAllowedIps', s.allowed_ips || '0.0.0.0/0');
+        setVal('cascadeVpnSubnet', s.vpn_subnet_override || '');
+    }
+
+    function updateCascadeDiag(cascade, live) {
+        const box = document.getElementById('cascadeDiagBox');
+        if (!box) return;
+        const parts = [];
+        if (cascade && cascade.enabled) {
+            parts.push('handshake: ' + ((live && live.handshake) || cascade.handshake ? 'ok' : 'NONE'));
+            if (cascade.diagnostics) parts.push(String(cascade.diagnostics).trim());
+            else if (live && live.raw) parts.push(String(live.raw).trim());
+            if (cascade.last_error) parts.push('error: ' + cascade.last_error);
+        }
+        const text = parts.filter(Boolean).join('\n\n');
+        box.textContent = text;
+        box.classList.toggle('hidden', !text);
+    }
+
+    function updateCascadeBadge(cascade, live) {
+        const badge = document.getElementById('cascadeStatusBadge');
+        if (!badge) return;
+        const enabled = !!(cascade && cascade.enabled);
+        const up = !!(live && live.up);
+        const hs = !!(live && live.handshake) || !!(cascade && cascade.handshake);
+        badge.className = 'badge ' + (enabled && up && hs ? 'badge-success' : (enabled ? 'badge-warn' : 'badge-warn'));
+        if (!enabled) badge.textContent = _('cascade_off');
+        else if (up && hs) badge.textContent = _('cascade_on');
+        else if (up && !hs) badge.textContent = _('cascade_no_handshake');
+        else badge.textContent = _('cascade_configured_down');
+        updateCascadeDiag(cascade, live);
+    }
+
+    async function loadCascade() {
+        try {
+            const res = await apiCall(`/api/servers/${SERVER_ID}/cascade`, 'POST', {});
+            const c = res.cascade || {};
+            if (c.entry_protocol) document.getElementById('cascadeEntryProtocol').value = c.entry_protocol;
+            if (c.exit_server_id !== undefined && c.exit_server_id !== null && c.exit_server_id !== '') {
+                document.getElementById('cascadeExitServer').value = String(c.exit_server_id);
+                fillCascadeExitProtocols();
+            }
+            if (c.exit_protocol) {
+                const exitProto = document.getElementById('cascadeExitProtocol');
+                if ([...exitProto.options].some(o => o.value === c.exit_protocol)) {
+                    exitProto.value = c.exit_protocol;
+                }
+            }
+            applyCascadeSettingsToForm(c.settings || {}, res.defaults || {});
+            updateCascadeBadge(c, res.live || {});
+        } catch (err) {
+            console.error(err);
+        }
+    }
+
+    async function setupCascade(enable) {
+        const entryProtocol = document.getElementById('cascadeEntryProtocol').value;
+        const exitServerId = document.getElementById('cascadeExitServer').value;
+        const exitProtocol = document.getElementById('cascadeExitProtocol').value;
+        if (enable && exitServerId === '') {
+            showToast(_('cascade_exit_required'), 'error');
+            return;
+        }
+        if (enable && !confirm(_('cascade_enable_confirm'))) return;
+        if (!enable && !confirm(_('cascade_disable_confirm'))) return;
+
+        setCascadeBusy(true, enable ? _('cascade_working') : _('cascade_disabling'));
+        showToast(enable ? _('cascade_working') : _('cascade_disabling'), 'info');
+        try {
+            const settings = collectCascadeSettings();
+            const res = await apiCall(`/api/servers/${SERVER_ID}/cascade/setup`, 'POST', {
+                enabled: !!enable,
+                entry_protocol: entryProtocol,
+                exit_server_id: parseInt(exitServerId || '0', 10),
+                exit_protocol: exitProtocol,
+                ...settings,
+            });
+            updateCascadeBadge(res.cascade || {}, {
+                up: !!(res.cascade && res.cascade.up),
+                handshake: !!(res.cascade && res.cascade.handshake),
+            });
+            showToast(enable ? _('cascade_enabled') : _('cascade_disabled'), 'success');
+            if (enable && res.warning) {
+                showToast(res.warning, 'info');
+            }
+            await loadCascade();
+        } catch (err) {
+            showToast(_('error') + ': ' + err.message, 'error');
+        } finally {
+            setCascadeBusy(false);
+        }
+    }
+
+    function enableCascade() { return setupCascade(true); }
+    function disableCascade() { return setupCascade(false); }
+
     // ========== Init ==========
     applyInstalledAppsVisibility();
+    fillCascadeExitProtocols();
+    loadCascade();
     checkServer();
     loadServerStats();
 </script>