Add direct gateway forwarding when VPN is off

src/server/index.js

@@ -3,6 +3,7 @@ import http from 'node:http';
 import path from 'node:path';
 import { spawn, spawnSync } from 'node:child_process';
 import { settings } from './config.js';
+import { setGatewayInterception } from './gatewayRouting.js';
 import { tcpPing } from './ping.js';
 import { buildSharedProxyInfo } from './sharedProxy.js';
 import {
@@ -90,6 +91,9 @@ function checkSingboxConfig() {
 
 function stopSingbox() {
   return new Promise((resolve) => {
+    if (settings.appMode === 'gateway') {
+      setGatewayInterception(false, settings.tproxyChain);
+    }
     if (!singboxProcess) {
       singboxStartedAt = null;
       return resolve();
@@ -112,7 +116,12 @@ function stopSingbox() {
 }
 
 async function startSingbox() {
-  if (!fs.existsSync(settings.configPath)) return false;
+  if (!fs.existsSync(settings.configPath)) {
+    if (settings.appMode === 'gateway') {
+      setGatewayInterception(false, settings.tproxyChain);
+    }
+    return false;
+  }
   checkSingboxConfig();
   await stopSingbox();
 
@@ -121,10 +130,23 @@ async function startSingbox() {
   });
   singboxProcess = child;
   singboxStartedAt = new Date().toISOString();
+  try {
+    if (settings.appMode === 'gateway') {
+      setGatewayInterception(true, settings.tproxyChain);
+    }
+  } catch (error) {
+    child.kill('SIGTERM');
+    singboxProcess = null;
+    singboxStartedAt = null;
+    throw error;
+  }
   child.once('exit', () => {
     if (singboxProcess === child) {
       singboxProcess = null;
       singboxStartedAt = null;
+      if (settings.appMode === 'gateway') {
+        setGatewayInterception(false, settings.tproxyChain);
+      }
     }
   });
   return true;