default listen on 127.0.0.1, listen on demand (#304)

src/main/resolve/server.ts

@@ -41,21 +41,32 @@ export function findAvailablePort(startPort: number): Promise<number> {
   })
 }
 
+let pacServer: http.Server
+
 export async function startPacServer(): Promise<void> {
-  pacPort = await findAvailablePort(10000)
-  const server = http
-    .createServer(async (_req, res) => {
-      const {
-        sysProxy: { pacScript }
-      } = await getAppConfig()
-      const { 'mixed-port': port = 7890 } = await getControledMihomoConfig()
+  await stopPacServer()
+  const { sysProxy } = await getAppConfig()
+  const { mode = 'manual', host: cHost, pacScript } = sysProxy
+  if (mode !== 'auto') {
+    return
+  }
+  const host = cHost || '127.0.0.1'
   let script = pacScript || defaultPacScript
+  const { 'mixed-port': port = 7890 } = await getControledMihomoConfig()
   script = script.replaceAll('%mixed-port%', port.toString())
+  pacPort = await findAvailablePort(10000)
+  pacServer = http
+    .createServer(async (_req, res) => {
       res.writeHead(200, { 'Content-Type': 'application/x-ns-proxy-autoconfig' })
       res.end(script)
     })
-    .listen(pacPort)
-  server.unref()
+    .listen(pacPort, host)
+}
+
+export async function stopPacServer(): Promise<void> {
+  if (pacServer) {
+    pacServer.close()
+  }
 }
 
 export async function startSubStoreFrontendServer(): Promise<void> {

src/main/sys/sysproxy.ts

@@ -1,6 +1,6 @@
 import { triggerAutoProxy, triggerManualProxy } from '@mihomo-party/sysproxy'
 import { getAppConfig, getControledMihomoConfig } from '../config'
-import { pacPort } from '../resolve/server'
+import { pacPort, startPacServer, stopPacServer } from '../resolve/server'
 import { promisify } from 'util'
 import { execFile } from 'child_process'
 import path from 'path'
@@ -63,6 +63,7 @@ export async function triggerSysProxy(enable: boolean): Promise<void> {
 }
 
 async function enableSysProxy(): Promise<void> {
+  await startPacServer()
   const { sysProxy } = await getAppConfig()
   const { mode, host, bypass = defaultBypass } = sysProxy
   const { 'mixed-port': port = 7890 } = await getControledMihomoConfig()
@@ -105,6 +106,7 @@ async function enableSysProxy(): Promise<void> {
 }
 
 async function disableSysProxy(): Promise<void> {
+  await stopPacServer()
   const execFilePromise = promisify(execFile)
   if (process.platform === 'win32') {
     try {

src/main/utils/init.ts

@@ -239,11 +239,13 @@ export async function init(): Promise<void> {
   await migration()
   await initFiles()
   await cleanup()
-  await startPacServer()
   await startSubStoreFrontendServer()
   await startSubStoreBackendServer()
   const { sysProxy } = await getAppConfig()
   try {
+    if (sysProxy.enable) {
+      await startPacServer()
+    }
     await triggerSysProxy(sysProxy.enable)
   } catch {
     // ignore

src/renderer/src/pages/syspeoxy.tsx

@@ -1,4 +1,4 @@
-import { Button, Input, Tab, Tabs } from '@nextui-org/react'
+import { Button, Input, Tab, Tabs, Tooltip } from '@nextui-org/react'
 import BasePage from '@renderer/components/base/base-page'
 import SettingCard from '@renderer/components/base/base-setting-card'
 import SettingItem from '@renderer/components/base/base-setting-item'
@@ -9,6 +9,7 @@ import { openUWPTool, triggerSysProxy } from '@renderer/utils/ipc'
 import { Key, useState } from 'react'
 import React from 'react'
 import { MdDeleteForever } from 'react-icons/md'
+import { IoIosHelpCircle } from 'react-icons/io'
 
 const defaultBypass: string[] =
   platform === 'linux'
@@ -135,7 +136,17 @@ const Sysproxy: React.FC = () => {
             }}
           />
         </SettingItem>
-        <SettingItem title="代理模式" divider>
+        <SettingItem
+          actions={
+            <Tooltip content="PAC监听 代理主机:端口(10000开始的可用)">
+              <Button isIconOnly size="sm" variant="light">
+                <IoIosHelpCircle className="text-lg" />
+              </Button>
+            </Tooltip>
+          }
+          title="代理模式"
+          divider
+        >
           <Tabs
             size="sm"
             color="primary"