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Dockerfile

@@ -20,6 +20,6 @@ COPY . /app
 RUN pip install --no-cache-dir -r /app/requirements.txt
 
 # Start Anonimization
-CMD ["python", "-u", "/app/app.py"]
+CMD ["uvicorn", "app:app", "--host", "0.0.0.0", "--port", "80"]
 
 WORKDIR /app

app.py

@@ -1,148 +1,35 @@
-# main.py
 import asyncio
-from fastapi import FastAPI, Request, Response, status
+
-from fastapi.responses import JSONResponse
+from config import load_config
-import httpx
+from docker_manager import DockerManager
-import yaml
+from middleware import ProxyMiddleware
-import docker
-from starlette.middleware.base import BaseHTTPMiddleware
-from starlette.types import ASGIApp
-from threading import Thread
-from time import time, sleep
-import websockets
-from starlette.types import Receive, Scope, Send
-from starlette.websockets import WebSocket
-from starlette.requests import HTTPConnection
 
 
-# --- Configuration Loading ---
+docker_mgr = DockerManager()
-class Route:
+routes = load_config("config.yml")
-    def __init__(self, path_prefix: str, target: str, container: str | None = None):
-        self.path_prefix = path_prefix
-        self.target = target
-        self.container = container
-
-def load_config(path: str):
-    with open(path, 'r') as f:
-        data = yaml.safe_load(f)
-        return [Route(**r) for r in data.get('routes', [])]
 
 
-# --- Docker Management ---
+class _LifespanApp:
-idle_containers = {}
+    """Minimal ASGI app that only handles lifespan events."""
-idle_timeout = {}
-idle_check_interval = 5
 
-def idle_watcher():
+    async def __call__(self, scope, receive, send):
-    client = docker.from_env()
+        if scope["type"] != "lifespan":
-    while True:
+            return
-        now = time()
+        task = None
-        for container, until in list(idle_containers.items()):
+        while True:
-            if until and now > until:
+            event = await receive()
-                try:
+            if event["type"] == "lifespan.startup":
-                    c = client.containers.get(container)
+                task = asyncio.create_task(docker_mgr.idle_watcher())
-                    c.stop()
+                await send({"type": "lifespan.startup.complete"})
-                    print(f"[watcher] Stopped idle container: {container}")
+            elif event["type"] == "lifespan.shutdown":
-                except Exception as e:
+                if task:
-                    print(f"[watcher] Failed to stop {container}: {e}")
+                    task.cancel()
-                finally:
-                    idle_containers.pop(container, None)
-        sleep(idle_check_interval)
-
-Thread(target=idle_watcher, daemon=True).start()
-
-
-# --- Proxy Middleware ---
-class ReverseProxyMiddleware(BaseHTTPMiddleware):
-    def __init__(self, app: ASGIApp, routes: list[Route]):
-        super().__init__(app)
-        self.routes = routes
-        self.docker = docker.from_env()
-
-    async def dispatch(self, request: Request, call_next):
-        path = request.url.path
-        route = next((r for r in self.routes if path.startswith(r.path_prefix)), None)
-
-        if not route:
-            return JSONResponse(status_code=status.HTTP_404_NOT_FOUND, content={"detail": "Not Found"})
-
-        if route.container:
-            try:
-                container = self.docker.containers.get(route.container)
-                if container.status != 'running':
-                    container.start()
-                    print(f"Started container {route.container}")
-                timeout = idle_timeout.get(route.container)
-                if timeout:
-                    idle_containers[route.container] = time() + timeout
-                else:
-                    idle_containers[route.container] = None
-            except Exception as e:
-                print(f"[proxy] Failed to ensure container '{route.container}': {e}")
-                return JSONResponse(status_code=status.HTTP_502_BAD_GATEWAY, content={"detail": "Container Error"})
-
-        # WebSocket upgrade detection
-        if request.headers.get("upgrade", "").lower() == "websocket":
-            return await self.handle_websocket_upgrade(request, route)
-
-        new_url = route.target.rstrip('/') + path[len(route.path_prefix):]
-        async with httpx.AsyncClient() as client:
-            try:
-                proxied = await client.request(
-                    method=request.method,
-                    url=new_url,
-                    headers=request.headers.raw,
-                    content=await request.body(),
-                    timeout=30.0
-                )
-                return Response(content=proxied.content, status_code=proxied.status_code, headers=proxied.headers)
-            except Exception as e:
-                print(f"[proxy] Failed proxying to {new_url}: {e}")
-                return JSONResponse(status_code=status.HTTP_502_BAD_GATEWAY, content={"detail": "Upstream Error"})
-
-    async def handle_websocket_upgrade(self, request: Request, route: Route):
-        scope: Scope = request.scope
-        receive: Receive = request.receive
-        send: Send = request._send  # Unsafe, but needed for ASGI hijack
-        ws = WebSocket(scope, receive=receive, send=send)
-        await ws.accept()
-
-        target_ws_url = route.target.rstrip('/') + request.url.path[len(route.path_prefix):]
-        if target_ws_url.startswith("http"):
-            target_ws_url = target_ws_url.replace("http", "ws", 1)
-
-        try:
-            async with websockets.connect(target_ws_url) as backend:
-                async def to_backend():
                     try:
-                        while True:
+                        await task
-                            data = await ws.receive_text()
+                    except asyncio.CancelledError:
-                            await backend.send(data)
+                        pass
-                    except Exception:
+                await send({"type": "lifespan.shutdown.complete"})
-                        await backend.close()
+                return
-
-                async def from_backend():
-                    try:
-                        while True:
-                            data = await backend.recv()
-                            await ws.send_text(data)
-                    except Exception:
-                        await ws.close()
-
-                await asyncio.gather(to_backend(), from_backend())
-        except Exception as e:
-            print(f"[ws] Proxy error: {e}")
-            await ws.close(code=1011)
-            return Response(status_code=502, content=b"WebSocket proxy error")
 
 
-# --- App Setup ---
+app = ProxyMiddleware(_LifespanApp(), routes=routes, docker=docker_mgr)
-app = FastAPI()
-config = load_config("config.yml")
-app.add_middleware(ReverseProxyMiddleware, routes=config)
-
-
-# Optional: Health check
-@app.get("/health")
-async def health():
-    return {"status": "ok"}

compose.yaml

@@ -5,8 +5,52 @@ services:
       context: .
     restart: unless-stopped
     volumes:
-      - ./config.yaml:/app/config.yaml
+      - ./config.yml:/app/config.yml
       - /var/run/docker.sock:/var/run/docker.sock
     ports:
-      - 80:80
+      - "80:80"
-networks: {}
+    networks:
+      - proxy_net
+    depends_on:
+      - db
+
+  web-socket-test:
+    image: ksdn117/web-socket-test
+    container_name: web-socket-test
+    restart: unless-stopped
+    networks:
+      - proxy_net
+
+  wordpress:
+    image: wordpress:latest
+    container_name: wordpress
+    restart: unless-stopped
+    environment:
+      WORDPRESS_DB_HOST: db
+      WORDPRESS_DB_USER: wp
+      WORDPRESS_DB_PASSWORD: wp
+      WORDPRESS_DB_NAME: wordpress
+    depends_on:
+      - db
+    networks:
+      - proxy_net
+
+  db:
+    image: mariadb:11
+    container_name: db
+    restart: unless-stopped
+    environment:
+      MARIADB_DATABASE: wordpress
+      MARIADB_USER: wp
+      MARIADB_PASSWORD: wp
+      MARIADB_ROOT_PASSWORD: root
+    volumes:
+      - db_data:/var/lib/mysql
+    networks:
+      - proxy_net
+
+networks:
+  proxy_net:
+
+volumes:
+  db_data:

config.py

@@ -0,0 +1,31 @@
+from dataclasses import dataclass, field
+import yaml
+
+
+@dataclass
+class ProxyRoute:
+    domain: str
+    target_host: str
+    target_port: int
+    containers: list[str] = field(default_factory=list)
+    timeout_seconds: int = 0  # idle timeout before stopping container (0 = never)
+    load_seconds: int = 0     # seconds to wait after starting container
+
+
+def load_config(path: str) -> dict[str, ProxyRoute]:
+    """Parse config.yml and return dict of domain -> ProxyRoute."""
+    with open(path) as f:
+        data = yaml.safe_load(f)
+    routes: dict[str, ProxyRoute] = {}
+    for h in data.get('proxy_hosts', []):
+        containers = [c['container_name'] for c in h.get('containers', [])]
+        route = ProxyRoute(
+            domain=h['domain'],
+            target_host=h['proxy_host'],
+            target_port=h['proxy_port'],
+            containers=containers,
+            timeout_seconds=h.get('proxy_timeout_seconds', 0),
+            load_seconds=h.get('proxy_load_seconds', 0),
+        )
+        routes[route.domain] = route
+    return routes

config.yml

@@ -3,15 +3,16 @@ proxy_hosts:
   - domain: ws.local
     containers:
       - container_name: web-socket-test
-    proxy_host: 10.201.0.128
+    proxy_host: web-socket-test
     proxy_port: 8010
-    proxy_timeout_seconds: 10
+    proxy_timeout_seconds: 60
-    proxy_load_seconds: 5
+    proxy_load_seconds: 3
 
   - domain: wp.local
     containers:
+      - container_name: wordpress
       - container_name: db
-    proxy_host: 10.201.0.128
+    proxy_host: wordpress
-    proxy_port: 8888
+    proxy_port: 80
-    proxy_timeout_seconds: 10
+    proxy_timeout_seconds: 60
-    proxy_load_seconds: 5
+    proxy_load_seconds: 10

docker_manager.py

@@ -0,0 +1,58 @@
+from __future__ import annotations
+
+import asyncio
+import docker
+from time import time
+
+
+class DockerManager:
+    def __init__(self):
+        self._client = docker.from_env()
+        self._locks: dict[str, asyncio.Lock] = {}
+        self._idle_until: dict[str, float | None] = {}
+
+    def _lock(self, name: str) -> asyncio.Lock:
+        if name not in self._locks:
+            self._locks[name] = asyncio.Lock()
+        return self._locks[name]
+
+    async def is_running(self, name: str) -> bool:
+        """Return True if the container exists and is currently running."""
+        loop = asyncio.get_running_loop()
+        try:
+            c = await loop.run_in_executor(None, self._client.containers.get, name)
+            return c.status == "running"
+        except Exception:
+            return False
+
+    async def ensure_running(self, name: str, load_seconds: int = 0):
+        """Start container if not running, then wait load_seconds."""
+        async with self._lock(name):
+            loop = asyncio.get_running_loop()
+            c = await loop.run_in_executor(None, self._client.containers.get, name)
+            if c.status != 'running':
+                await loop.run_in_executor(None, c.start)
+                print(f"[docker] Started: {name}")
+                if load_seconds > 0:
+                    await asyncio.sleep(load_seconds)
+
+    def reset_idle(self, name: str, timeout_seconds: int):
+        """Reset idle countdown for a container."""
+        self._idle_until[name] = (time() + timeout_seconds) if timeout_seconds > 0 else None
+
+    async def idle_watcher(self, interval: int = 5):
+        """Background async task that stops idle containers."""
+        loop = asyncio.get_running_loop()
+        while True:
+            await asyncio.sleep(interval)
+            now = time()
+            for name, until in list(self._idle_until.items()):
+                if until and now > until:
+                    try:
+                        c = await loop.run_in_executor(None, self._client.containers.get, name)
+                        await loop.run_in_executor(None, c.stop)
+                        print(f"[docker] Stopped idle: {name}")
+                    except Exception as e:
+                        print(f"[docker] Failed to stop {name}: {e}")
+                    finally:
+                        self._idle_until.pop(name, None)

middleware.py

@@ -0,0 +1,214 @@
+from __future__ import annotations
+
+import asyncio
+from pathlib import Path
+
+import httpx
+import websockets
+
+from config import ProxyRoute
+from docker_manager import DockerManager
+
+# Headers that must not be forwarded between proxy and backend
+HOP_BY_HOP = {
+    "connection", "keep-alive", "proxy-authenticate", "proxy-authorization",
+    "te", "trailers", "transfer-encoding", "upgrade",
+}
+
+TEMPLATES = Path(__file__).parent / "templates"
+
+
+def _load_template(name: str, **replacements: str) -> bytes:
+    text = (TEMPLATES / name).read_text(encoding="utf-8")
+    for key, value in replacements.items():
+        text = text.replace("{{" + key + "}}", value)
+    return text.encode()
+
+
+class ProxyMiddleware:
+    def __init__(self, app, routes: dict[str, ProxyRoute], docker: DockerManager):
+        self.app = app
+        self.routes = routes
+        self.docker = docker
+
+    async def __call__(self, scope, receive, send):
+        if scope["type"] == "http":
+            await self._http(scope, receive, send)
+        elif scope["type"] == "websocket":
+            await self._websocket(scope, receive, send)
+        else:
+            # Pass lifespan and other event types to the inner app
+            await self.app(scope, receive, send)
+
+    # ------------------------------------------------------------------
+    # Helpers
+    # ------------------------------------------------------------------
+
+    def _find_route(self, scope) -> ProxyRoute | None:
+        headers = dict(scope.get("headers", []))
+        host = headers.get(b"host", b"").decode().split(":")[0]
+        return self.routes.get(host)
+
+    async def _ensure_containers(self, route: ProxyRoute):
+        for name in route.containers:
+            await self.docker.ensure_running(name, route.load_seconds)
+            self.docker.reset_idle(name, route.timeout_seconds)
+
+    # ------------------------------------------------------------------
+    # HTTP proxy
+    # ------------------------------------------------------------------
+
+    async def _http(self, scope, receive, send):
+        # Health check handled directly so it works regardless of Host header
+        if scope["path"] == "/health":
+            await send({"type": "http.response.start", "status": 200,
+                        "headers": [(b"content-type", b"application/json")]})
+            await send({"type": "http.response.body", "body": b'{"status":"ok"}'})
+            return
+
+        route = self._find_route(scope)
+        if not route:
+            headers = dict(scope.get("headers", []))
+            host = headers.get(b"host", b"").decode().split(":")[0]
+            body = _load_template("404.html", SERVICE=host)
+            await send({"type": "http.response.start", "status": 404,
+                        "headers": [(b"content-type", b"text/html; charset=utf-8")]})
+            await send({"type": "http.response.body", "body": body})
+            return
+
+        # If any container is not yet running, show wait page and start it
+        # in the background. The browser will auto-refresh via the Refresh header.
+        for name in route.containers:
+            if not await self.docker.is_running(name):
+                asyncio.create_task(self._ensure_containers(route))
+                body = _load_template("wait.html")
+                await send({"type": "http.response.start", "status": 503,
+                            "headers": [
+                                (b"content-type", b"text/html; charset=utf-8"),
+                                (b"refresh", b"3"),
+                                (b"content-length", str(len(body)).encode()),
+                            ]})
+                await send({"type": "http.response.body", "body": body})
+                return
+
+        # All containers running – reset idle timers and proxy the request.
+        for name in route.containers:
+            self.docker.reset_idle(name, route.timeout_seconds)
+
+        path = scope["path"]
+        query = scope.get("query_string", b"").decode()
+        url = f"http://{route.target_host}:{route.target_port}{path}"
+        if query:
+            url += f"?{query}"
+
+        req_headers = [
+            (k, v) for k, v in scope["headers"]
+            if k.lower().decode() not in HOP_BY_HOP
+        ]
+
+        body = b""
+        while True:
+            msg = await receive()
+            body += msg.get("body", b"")
+            if not msg.get("more_body", False):
+                break
+
+        async with httpx.AsyncClient() as client:
+            try:
+                resp = await client.request(
+                    method=scope["method"],
+                    url=url,
+                    headers=req_headers,
+                    content=body,
+                    timeout=30.0,
+                )
+                # Strip hop-by-hop headers + content-encoding/length (httpx
+                # decompresses automatically, so the original values are wrong).
+                skip = HOP_BY_HOP | {"content-encoding", "content-length"}
+                resp_headers = [
+                    (k.lower(), v) for k, v in resp.headers.raw
+                    if k.lower().decode() not in skip
+                ]
+                resp_headers.append(
+                    (b"content-length", str(len(resp.content)).encode())
+                )
+                await send({"type": "http.response.start",
+                            "status": resp.status_code, "headers": resp_headers})
+                await send({"type": "http.response.body", "body": resp.content})
+            except Exception as e:
+                print(f"[http] Upstream error for {url}: {e}")
+                await send({"type": "http.response.start", "status": 502,
+                            "headers": [(b"content-type", b"text/plain")]})
+                await send({"type": "http.response.body", "body": b"Bad Gateway"})
+
+    # ------------------------------------------------------------------
+    # WebSocket proxy
+    # ------------------------------------------------------------------
+
+    async def _websocket(self, scope, receive, send):
+        route = self._find_route(scope)
+        if not route:
+            # Reject before accept
+            await send({"type": "websocket.close", "code": 4004})
+            return
+
+        try:
+            await self._ensure_containers(route)
+        except Exception as e:
+            print(f"[ws] Container error: {e}")
+            await send({"type": "websocket.close", "code": 1011})
+            return
+
+        path = scope["path"]
+        query = scope.get("query_string", b"").decode()
+        url = f"ws://{route.target_host}:{route.target_port}{path}"
+        if query:
+            url += f"?{query}"
+
+        # Accept the client WebSocket connection
+        await send({"type": "websocket.accept"})
+
+        async def client_to_backend(backend_ws):
+            try:
+                while True:
+                    msg = await receive()
+                    if msg["type"] == "websocket.receive":
+                        if msg.get("text") is not None:
+                            await backend_ws.send(msg["text"])
+                        elif msg.get("bytes") is not None:
+                            await backend_ws.send(msg["bytes"])
+                    elif msg["type"] == "websocket.disconnect":
+                        break
+            except Exception as e:
+                print(f"[ws] client→backend error: {e}")
+
+        async def backend_to_client(backend_ws):
+            try:
+                async for msg in backend_ws:
+                    if isinstance(msg, str):
+                        await send({"type": "websocket.send", "text": msg})
+                    else:
+                        await send({"type": "websocket.send", "bytes": msg})
+            except Exception as e:
+                print(f"[ws] backend→client error: {e}")
+
+        try:
+            async with websockets.connect(url) as backend_ws:
+                t1 = asyncio.ensure_future(client_to_backend(backend_ws))
+                t2 = asyncio.ensure_future(backend_to_client(backend_ws))
+                _done, pending = await asyncio.wait(
+                    [t1, t2], return_when=asyncio.FIRST_COMPLETED
+                )
+                for task in pending:
+                    task.cancel()
+                    try:
+                        await task
+                    except asyncio.CancelledError:
+                        pass
+        except Exception as e:
+            print(f"[ws] Connection error to {url}: {e}")
+        finally:
+            try:
+                await send({"type": "websocket.close", "code": 1000})
+            except Exception:
+                pass

requirements.txt

@@ -1,6 +1,5 @@
 docker
 PyYAML
 websockets
-fastapi
 uvicorn[standard]
 httpx