feat: allow pass user-agent for IP detection (#6272)

* feat: allow pass user-agent when lookup ip API

* Update src/services/api.ts

Co-authored-by: Sukka <isukkaw@gmail.com>

* refactor: optimize user-agent retrieval with memoization

---------

Co-authored-by: Sukka <isukkaw@gmail.com>

src/services/api.ts

@@ -1,9 +1,20 @@
+import { getName, getVersion } from "@tauri-apps/api/app";
 import { fetch } from "@tauri-apps/plugin-http";
 import { asyncRetry } from "foxts/async-retry";
 import { extractErrorMessage } from "foxts/extract-error-message";
+import { once } from "foxts/once";
 
 import { debugLog } from "@/utils/debug";
 
+const getUserAgentPromise = once(async () => {
+  try {
+    const [name, version] = await Promise.all([getName(), getVersion()]);
+    return `${name}/${version}`;
+  } catch (error) {
+    console.debug("Failed to build User-Agent, fallback to default", error);
+    return "clash-verge-rev";
+  }
+});
 // Get current IP and geolocation information （refactored IP detection with service-specific mappings）
 interface IpInfo {
   ip: string;
@@ -192,6 +203,8 @@ export const getIpInfo = async (): Promise<
 
   const shuffledServices = shuffleServices();
   let lastError: unknown | null = null;
+  const userAgent = await getUserAgentPromise();
+  console.debug("User-Agent for IP detection:", userAgent);
 
   for (const service of shuffledServices) {
     debugLog(`尝试IP检测服务: ${service.url}`);
@@ -210,6 +223,9 @@ export const getIpInfo = async (): Promise<
             method: "GET",
             signal: timeoutController.signal, // AbortSignal.timeout(service.timeout || serviceTimeout),
             connectTimeout: service.timeout || serviceTimeout,
+            headers: {
+              "User-Agent": userAgent,
+            },
           });
 
           if (!response.ok) {