BE: DEEP_SLEEP #1555

Signed-off-by: jokob-sk <jokob.sk@gmail.com>

server/__main__.py

@@ -27,7 +27,7 @@ from logger import mylog
 from helper import filePermissions
 from utils.datetime_utils import timeNowUTC
 from app_state import updateState
-from api import update_api
+from api import update_api, check_activity
 from scan.session_events import process_scan
 from initialise import importConfigs, renameSettings
 from database import DB
@@ -262,7 +262,25 @@ def main():
             update_api(db, all_plugins, True, ["devices"], userUpdatedDevices)
 
         # loop
-        time.sleep(5)  # wait for N seconds
+        # ------------------------------------------------------------------
+        # Dynamic sleep (energy saving)
+        # ------------------------------------------------------------------
+        if conf.DEEP_SLEEP:
+            is_active = check_activity()
+
+            if is_active:
+                mylog("debug", ["[DEEP_SLEEP] Active Cycle"])
+                time.sleep(5)
+            else:
+                mylog("debug", ["[DEEP_SLEEP] Passive Cycle"])
+                for _ in range(3):
+                    if check_activity():
+                        break
+                    time.sleep(20)
+        else:
+            time.sleep(5)
+
+
 
 
 # ===============================================================================

server/api.py

@@ -251,3 +251,31 @@ def stop_periodic_write():
             periodic_write_thread.join()
             periodic_write_running = False
             mylog("trace", ["[API] periodic_write thread stopped."])
+
+
+def check_activity():
+    """
+    Check for active TCP connections on the host.
+
+    Reads `/proc/net/tcp` and looks for entries in the ESTABLISHED state
+    (state code `01`). If any are found, the system is considered "active",
+    typically indicating interaction via the web UI or API.
+
+    Returns:
+        bool: True if at least one established TCP connection exists,
+              False otherwise or if the check fails.
+
+    Notes:
+        - Linux-only: relies on `/proc/net/tcp`.
+        - Lightweight heuristic; does not distinguish connection origin
+          (e.g., UI vs other services).
+        - Fail-safe: returns False on any read/parse error.
+    """
+    try:
+        with open("/proc/net/tcp", "r") as f:
+            for line in f:
+                if " 01 " in line:  # ESTABLISHED
+                    return True
+    except:
+        pass
+    return False

server/initialise.py

@@ -246,6 +246,15 @@ def importConfigs(pm, db, all_plugins):
         "[]",
         "General",
     )
+    conf.DEEP_SLEEP = ccd(
+        "DEEP_SLEEP",
+        False,
+        c_d,
+        "Deep Sleep",
+        """{"dataType": "boolean","elements": [{"elementType": "input","elementOptions": [{ "type": "checkbox" }],"transformers": []}]}""",
+        "[]",
+        "General",
+    )
     conf.DISCOVER_PLUGINS = ccd(
         "DISCOVER_PLUGINS",
         True,