Add optional outbound connectivity probe with three-state status dot

README.md

@@ -7,9 +7,14 @@ GNOME, используя встроенный **Clash API**.
 
 **В панели (компактно):**
 
-- монохромный индикатор-кружок — залит, когда API доступен и прокси жив; полый
+- монохромный индикатор-кружок с тремя состояниями (цвет берётся из цвета текста
-  (тускнее), когда API недоступен. Цвет берётся из цвета текста панели, поэтому
+  панели, поэтому индикатор одинаково читается на тёмной и светлой теме):
-  индикатор одинаково читается на тёмной и светлой теме;
+  - **залитый круг** — сервис работает и через активный outbound есть связь;
+  - **сплошное кольцо** — сервис работает, но связи через outbound нет;
+  - **пунктирное кольцо (тусклое)** — сервис (Clash API) недоступен.
+
+  Различие «есть связь / нет связи» доступно только при включённой опции
+  «Connectivity check» (см. ниже) — иначе кружок просто залит, когда API отвечает;
 - имя активного outbound (текущий узел Selector-группы);
 - текущую скорость, например `↓2.4M ↑120k`.
 
@@ -71,6 +76,14 @@ gnome-extensions enable "$UUID"
 показываются только те, что sing-box измерил сам. Ручной замер (пункт **Test latency**)
 выполняется через `GET /proxies/{name}/delay` только по нажатию.
 
+**Проверка связности (опция).** Если включить `check-connectivity` в настройках,
+расширение раз в `connectivity-interval` секунд (по умолчанию 30) делает
+`GET /proxies/{активный-узел}/delay` по адресу `connectivity-url`
+(по умолчанию `https://www.gstatic.com/generate_204`). Успех → кружок залит и в меню
+показывается задержка (`Active · N ms`); ошибка/таймаут → сплошное кольцо и
+`No connectivity`. Это единственный режим, когда расширение шлёт трафик в фоне; по
+умолчанию он выключен.
+
 Сетевой слой (авторизация, разбор ответов, переключение outbound) проверен на живом
 API sing-box 1.13.13.
 

lib/indicator.js

@@ -14,12 +14,6 @@ import { gettext as _ } from 'resource:///org/gnome/shell/extensions/extension.j
 import { ClashApi } from './clashApi.js';
 import { formatSpeed, formatSpeedShort } from './format.js';
 
-const STATE = {
-    CONNECTING: 'connecting',
-    ONLINE: 'online',
-    OFFLINE: 'offline',
-};
-
 export const SingBoxIndicator = GObject.registerClass(
 class SingBoxIndicator extends PanelMenu.Button {
     _init(extension) {
@@ -29,7 +23,11 @@ class SingBoxIndicator extends PanelMenu.Button {
         this._settings = extension.getSettings();
         this._api = new ClashApi();
 
-        this._state = STATE.CONNECTING;
+        this._apiUp = null;          // null = connecting, true/false = reachable
+        this._connectivity = 'unknown'; // 'unknown' | 'ok' | 'down'
+        this._connectivityDelay = null; // ms of last successful outbound ping
+        this._activeOutbound = null; // node to probe for connectivity
+        this._dotState = 'connecting'; // 'connecting'|'down'|'nocon'|'ok'
         this._prevSample = null;     // { down, up, t } for speed diffing
         this._selectorSignature = null;
         this._selectorItems = new Map();
@@ -47,6 +45,7 @@ class SingBoxIndicator extends PanelMenu.Button {
         this._applySettings();
 
         this._startPolling();
+        this._startConnectivityCheck();
     }
 
     // ---- Panel widget -------------------------------------------------
@@ -57,9 +56,10 @@ class SingBoxIndicator extends PanelMenu.Button {
             y_align: Clutter.ActorAlign.CENTER,
         });
 
-        // Monochrome status dot: a ring in the panel's text color, filled when
+        // Monochrome status dot in the panel's text color (adapts to theme):
-        // the proxy is alive, hollow when it is not. Adapts to light/dark theme.
+        //   filled disc   — service up and outbound has connectivity;
-        this._dotFilled = false;
+        //   solid ring    — service up but no connectivity through the outbound;
+        //   dashed ring   — service (Clash API) unreachable.
         this._dot = new St.DrawingArea({
             style_class: 'sbx-dot',
             y_align: Clutter.ActorAlign.CENTER,
@@ -138,7 +138,13 @@ class SingBoxIndicator extends PanelMenu.Button {
             this._delays.clear();
         this._applySettings();
         this._restartPolling();
+        this._restartConnectivityCheck();
+        if (!this._checkConnectivity) {
+            this._connectivity = 'unknown';
+            this._connectivityDelay = null;
+        }
         this._poll();
+        this._updateStatus();
     }
 
     _applySettings() {
@@ -151,6 +157,9 @@ class SingBoxIndicator extends PanelMenu.Button {
         this._showOutbound = this._settings.get_boolean('show-outbound');
         this._showSpeed = this._settings.get_boolean('show-speed');
         this._selectorPref = this._settings.get_string('selector-group');
+        this._checkConnectivity = this._settings.get_boolean('check-connectivity');
+        this._connectivityInterval = this._settings.get_int('connectivity-interval');
+        this._connectivityUrl = this._settings.get_string('connectivity-url');
         this._outboundLabel.visible = this._showOutbound;
         this._speedLabel.visible = this._showSpeed;
     }
@@ -197,14 +206,82 @@ class SingBoxIndicator extends PanelMenu.Button {
             if (c.is_cancelled())
                 return;
             this._updateFromData(conn, proxies);
-            this._setState(STATE.ONLINE);
+            this._apiUp = true;
         } catch (e) {
             if (c.is_cancelled())
                 return;
-            this._setState(STATE.OFFLINE, e);
+            // Service (Clash API) unreachable: connectivity is moot.
+            this._apiUp = false;
+            this._connectivity = 'unknown';
+            this._connectivityDelay = null;
+            this._prevSample = null;
+            this._clearMenuData();
         } finally {
             this._polling = false;
         }
+        if (!c.is_cancelled())
+            this._updateStatus();
+    }
+
+    // ---- Connectivity check (optional active probe) -------------------
+
+    _startConnectivityCheck() {
+        if (!this._checkConnectivity)
+            return;
+        this._connectivityTimeoutId = GLib.timeout_add_seconds(
+            GLib.PRIORITY_DEFAULT,
+            Math.max(5, this._connectivityInterval),
+            () => {
+                this._pingConnectivity();
+                return GLib.SOURCE_CONTINUE;
+            }
+        );
+        this._pingConnectivity();
+    }
+
+    _stopConnectivityCheck() {
+        if (this._connectivityTimeoutId) {
+            GLib.Source.remove(this._connectivityTimeoutId);
+            this._connectivityTimeoutId = 0;
+        }
+    }
+
+    _restartConnectivityCheck() {
+        this._stopConnectivityCheck();
+        this._startConnectivityCheck();
+    }
+
+    // Probe the active outbound to tell "up but no internet" from "up and OK".
+    async _pingConnectivity() {
+        if (!this._checkConnectivity || this._apiUp === false)
+            return;
+        const node = this._activeOutbound;
+        if (!node)
+            return;
+        const c = this._cancellable;
+        try {
+            const res = await this._api.getDelay(
+                node, { url: this._connectivityUrl, timeout: 5000 }, c);
+            if (c.is_cancelled())
+                return;
+            const d = Number(res?.delay);
+            if (Number.isFinite(d) && d > 0) {
+                this._connectivity = 'ok';
+                this._connectivityDelay = d;
+                this._delays.set(node, d);
+            } else {
+                this._connectivity = 'down';
+                this._connectivityDelay = null;
+                this._delays.set(node, 'timeout');
+            }
+        } catch (e) {
+            if (c.is_cancelled())
+                return;
+            this._connectivity = 'down';
+            this._connectivityDelay = null;
+            this._delays.set(node, 'timeout');
+        }
+        this._updateStatus();
     }
 
     // ---- Data → UI ----------------------------------------------------
@@ -286,6 +363,7 @@ class SingBoxIndicator extends PanelMenu.Button {
         // Panel outbound label: chosen group's current node.
         const panelGroup = this._pickPanelGroup(selectors);
         this._outboundLabel.text = panelGroup ? panelGroup.now ?? '' : '';
+        this._activeOutbound = panelGroup ? panelGroup.now ?? null : null;
 
         // Rebuild the selector section only when the structure changes.
         const signature = JSON.stringify(selectors.map(s => [s.name, s.all]));
@@ -438,30 +516,33 @@ class SingBoxIndicator extends PanelMenu.Button {
 
     // ---- State / visuals ---------------------------------------------
 
-    _setState(state, error) {
+    // Derive the dot state and status text from API + connectivity state.
-        this._state = state;
+    _updateStatus() {
-
+        let dot;
-        switch (state) {
+        if (this._apiUp === null) {
-        case STATE.ONLINE:
+            dot = 'connecting';
-            this._dotFilled = true;
+            this._statusItem.label.text = _('sing-box  ·  Connecting…');
-            this._statusItem.label.text = _('sing-box  ·  Active');
+        } else if (!this._apiUp) {
-            break;
+            dot = 'down';
-        case STATE.OFFLINE:
-            this._dotFilled = false;
             this._statusItem.label.text = _('sing-box  ·  Unreachable');
             this._outboundLabel.text = '';
             this._speedLabel.text = '';
             this._speedItem.label.text = _('API unreachable — check URL and secret in Settings');
-            this._prevSample = null;
+        } else if (this._checkConnectivity && this._connectivity === 'down') {
-            this._clearMenuData();
+            dot = 'nocon';
-            break;
+            this._statusItem.label.text = _('sing-box  ·  No connectivity');
-        default:
+        } else {
-            this._dotFilled = false;
+            dot = 'ok';
-            this._statusItem.label.text = _('sing-box  ·  Connecting…');
+            const ms = this._checkConnectivity && this._connectivityDelay
-            break;
+                ? `  ·  ${this._connectivityDelay} ms` : '';
+            this._statusItem.label.text = `${_('sing-box  ·  Active')}${ms}`;
         }
+
+        if (dot !== this._dotState) {
+            this._dotState = dot;
             this._dot.queue_repaint();
         }
+    }
 
     _drawDot(area) {
         const cr = area.get_context();
@@ -477,15 +558,35 @@ class SingBoxIndicator extends PanelMenu.Button {
         const radius = Math.min(w, h) / 2 - 2;
 
         cr.setLineWidth(1.5);
+
+        switch (this._dotState) {
+        case 'ok':
+            // Filled disc: service up and outbound reachable.
             cr.arc(cx, cy, radius, 0, 2 * Math.PI);
-        if (this._dotFilled) {
             cr.setSourceRGBA(r, g, b, a);
             cr.fillPreserve();
             cr.stroke();
-        } else {
+            break;
-            // Hollow ring, slightly dimmed so "off" reads as inactive.
+        case 'nocon':
-            cr.setSourceRGBA(r, g, b, a * 0.6);
+            // Solid hollow ring: service up but no connectivity.
+            cr.arc(cx, cy, radius, 0, 2 * Math.PI);
+            cr.setSourceRGBA(r, g, b, a);
             cr.stroke();
+            break;
+        case 'down':
+            // Dashed dim ring: service (Clash API) unreachable.
+            cr.setDash([2, 2], 0);
+            cr.arc(cx, cy, radius, 0, 2 * Math.PI);
+            cr.setSourceRGBA(r, g, b, a * 0.5);
+            cr.stroke();
+            cr.setDash([], 0);
+            break;
+        default:
+            // Connecting: dim solid ring.
+            cr.arc(cx, cy, radius, 0, 2 * Math.PI);
+            cr.setSourceRGBA(r, g, b, a * 0.5);
+            cr.stroke();
+            break;
         }
         cr.$dispose();
     }
@@ -504,6 +605,7 @@ class SingBoxIndicator extends PanelMenu.Button {
             GLib.Source.remove(this._timeoutId);
             this._timeoutId = 0;
         }
+        this._stopConnectivityCheck();
         if (this._settingsChangedId) {
             this._settings.disconnect(this._settingsChangedId);
             this._settingsChangedId = 0;

prefs.js

@@ -46,6 +46,32 @@ export default class SingBoxStatusPreferences extends ExtensionPreferences {
         });
         settings.bind('refresh-interval', intervalRow, 'value', Gio.SettingsBindFlags.DEFAULT);
         dispGroup.add(intervalRow);
+
+        // --- Connectivity ---------------------------------------------
+        const connCheckGroup = new Adw.PreferencesGroup({
+            title: _('Connectivity check'),
+            description: _('Actively probe the active outbound to tell “up but no internet” from “up and reachable”. Adds a third status-dot state.'),
+        });
+        page.add(connCheckGroup);
+
+        const checkRow = this._switchRow(settings, 'check-connectivity',
+            _('Probe active outbound'),
+            _('Periodically measure latency through the current outbound.'));
+        connCheckGroup.add(checkRow);
+
+        const connIntervalRow = new Adw.SpinRow({
+            title: _('Probe interval'),
+            subtitle: _('Seconds between outbound probes.'),
+            adjustment: new Gtk.Adjustment({ lower: 5, upper: 600, step_increment: 5 }),
+        });
+        settings.bind('connectivity-interval', connIntervalRow, 'value', Gio.SettingsBindFlags.DEFAULT);
+        settings.bind('check-connectivity', connIntervalRow, 'sensitive', Gio.SettingsBindFlags.GET);
+        connCheckGroup.add(connIntervalRow);
+
+        const connUrlRow = this._entryRow(settings, 'connectivity-url', _('Probe URL'),
+            _('Target URL for the latency probe (a 204/no-content endpoint is ideal).'));
+        settings.bind('check-connectivity', connUrlRow, 'sensitive', Gio.SettingsBindFlags.GET);
+        connCheckGroup.add(connUrlRow);
     }
 
     _entryRow(settings, key, title, subtitle) {

schemas/org.gnome.shell.extensions.sing-box-status.gschema.xml

@@ -38,5 +38,21 @@
       <summary>Show speed in the panel</summary>
       <description>Show upload/download speed in the top bar.</description>
     </key>
+    <key name="check-connectivity" type="b">
+      <default>false</default>
+      <summary>Periodically probe the active outbound</summary>
+      <description>When enabled, the extension periodically measures latency through the active outbound to distinguish "service up but no connectivity" from "service up and reachable".</description>
+    </key>
+    <key name="connectivity-interval" type="i">
+      <default>30</default>
+      <range min="5" max="600"/>
+      <summary>Connectivity probe interval (seconds)</summary>
+      <description>How often to probe the active outbound when connectivity checking is enabled.</description>
+    </key>
+    <key name="connectivity-url" type="s">
+      <default>'https://www.gstatic.com/generate_204'</default>
+      <summary>Connectivity probe URL</summary>
+      <description>Target URL used by the active-outbound latency probe.</description>
+    </key>
   </schema>
 </schemalist>