Add Gateway connectivity diagnostics and traffic chart improvements

src/server/dataplane.js

@@ -7,6 +7,7 @@ import { buildVersionInfo } from './version.js';
 import { readNeighborSnapshot } from './adapters/neighbors.js';
 import { createDeviceTrafficService } from './services/deviceTrafficService.js';
 import { createDevicePolicyService } from './services/devicePolicyService.js';
+import { createConnectivityDiagnosticsService } from './services/connectivityDiagnosticsService.js';
 
 const socketPath = settings.dataplaneSocket;
 const runtime = createSingboxRuntime({
@@ -27,6 +28,9 @@ const devicePolicy = createDevicePolicyService({
   tproxyPort: settings.tproxyPort,
   tproxyMark: settings.tproxyMark,
 });
+const connectivityDiagnostics = createConnectivityDiagnosticsService({
+  proxyPort: settings.diagnosticsProxyPort,
+});
 let ready = false;
 let trafficTimer = null;
 const MAX_POLICY_BODY_BYTES = 256 * 1024;
@@ -86,6 +90,9 @@ const server = http.createServer(async (req, res) => {
       const body = await readJson(req);
       return sendJson(res, 200, await devicePolicy.apply(body.devices));
     }
+    if (req.method === 'POST' && req.url === '/diagnostics/connectivity') {
+      return sendJson(res, 200, await connectivityDiagnostics.run({ vpnAvailable: runtime.running }));
+    }
     if (req.method === 'POST' && req.url === '/apply') {
       return sendJson(res, 200, await runtime.apply());
     }