LAN access: bind 0.0.0.0 + expose LAN URL (capabilities.lan, UI badge)

desktop_engine.py

@@ -22,14 +22,37 @@ def _pick_port():
             # (2 engine cung 8000 -> request roi vao engine ngau nhien -> UI loi).
             # Listen socket khong can SO_REUSEADDR (TIME_WAIT chi ap dung cho
             # connection socket, khong phai listen socket).
+            # Bind 0.0.0.0 (GIONG uvicorn) — kiem tra dung port ma server se
+            # dung, truong hop port bi chiem tren interface khac khong sot.
             try:
-                s.bind(("127.0.0.1", port))
+                s.bind(("0.0.0.0", port))
                 return port
             except OSError:
                 continue
     return PORT_RANGE[0]
 
 
+def _lan_ips():
+    """IPv4 cua may tren LAN (bo loopback) — client browser o may khac mo app."""
+    ips = []
+    try:
+        with socket.socket(socket.AF_INET, socket.SOCK_DGRAM) as s:
+            s.connect(("8.8.8.8", 80))
+            ip = s.getsockname()[0]
+        if ip and not ip.startswith("127.") and ip not in ips:
+            ips.append(ip)
+    except OSError:
+        pass
+    try:
+        for info in socket.getaddrinfo(socket.gethostname(), None, socket.AF_INET):
+            ip = info[4][0]
+            if ip and not ip.startswith("127.") and ip not in ips:
+                ips.append(ip)
+    except OSError:
+        pass
+    return ips
+
+
 def _parent_alive(pid):
     # Windows: os.kill(pid, 0) KHONG kiem tra ton tai — no goi
     # TerminateProcess (giai thich: moi sig khac CTRL_C/BREAK deu terminate).
@@ -100,7 +123,10 @@ def main():
     import uvicorn
     import app.main  # noqa: F401 — import tuong minh de PyInstaller bundle du package app
 
-    config = uvicorn.Config(app.main.app, host="127.0.0.1", port=port,
+    # Bind 0.0.0.0: client browser o may khac tren LAN mo app qua dia chi IP
+    # (http://<LAN-IP>:port) — lam viec realtime voi may chay standalone.
+    # Cua so Tauri (shell) van mo http://127.0.0.1:port nhu cu.
+    config = uvicorn.Config(app.main.app, host="0.0.0.0", port=port,
                             log_level="info", access_log=False)
     server = uvicorn.Server(config)
 
@@ -117,8 +143,14 @@ def main():
                     return
         threading.Thread(target=_watchdog, daemon=True).start()
 
-    logging.getLogger("desktop_engine").info(
-        "SonicForge engine listening on 127.0.0.1:%d", port)
+    logger = logging.getLogger("desktop_engine")
+    logger.info("SonicForge engine listening on 0.0.0.0:%d", port)
+    lan_ips = _lan_ips()
+    if lan_ips:
+        logger.info("LAN access — mo browser o may khac: %s",
+                    "  |  ".join("http://%s:%d" % (ip, port) for ip in lan_ips))
+    else:
+        logger.warning("Khong phat hien dia chi LAN — client may khac khong truy cap duoc")
     server.run()