fix(core): add retry to IP metadata query

core/api/package.json

@@ -64,6 +64,7 @@
     "@t3-oss/env-core": "^0.7.3",
     "ajv": "^8.17.1",
     "axios": "^1.11.0",
+    "axios-retry": "^4.5.0",
     "basic-auth": "^2.0.1",
     "bignumber.js": "^9.3.1",
     "bip32": "^4.0.0",

core/api/src/services/ipfetcher/index.ts

@@ -1,4 +1,7 @@
+import https from "https"
+
 import axios from "axios"
+import axiosRetry from "axios-retry"
 
 import { UnknownIpFetcherServiceError } from "@/domain/ipfetcher"
 import { PROXY_CHECK_APIKEY } from "@/config"
@@ -15,6 +18,16 @@ type Params = {
   key?: string
 }
 
+export const client = axios.create({
+  timeout: 2000,
+  httpsAgent: new https.Agent({ keepAlive: true }),
+})
+axiosRetry(client, {
+  retries: 3,
+  retryDelay: () => 500,
+  shouldResetTimeout: true,
+})
+
 export const IpFetcher = (): IIpFetcherService => {
   const fetchIPInfo = async (ip: string): Promise<IPInfo | IpFetcherServiceError> => {
     const params: Params = {
@@ -33,10 +46,9 @@ export const IpFetcher = (): IIpFetcherService => {
     }
 
     try {
-      const { data } = await axios.request({
+      const { data } = await client.request({
         url: `https://proxycheck.io/v2/${ip}`,
         params,
-        timeout: 2000, // ms
       })
 
       const proxy = !!(data[ip] && data[ip].proxy && data[ip].proxy === "yes")

core/api/test/unit/services/ipfetcher/fetch-ip-info.spec.ts

@@ -1,14 +1,13 @@
-import axios from "axios"
 import MockAdapter from "axios-mock-adapter"
 
-import { IpFetcher } from "@/services/ipfetcher"
+import { IpFetcher, client } from "@/services/ipfetcher"
 
 /* eslint @typescript-eslint/ban-ts-comment: "off" */
 // @ts-ignore-next-line no-implicit-any error
 let mock
 
 beforeAll(() => {
-  mock = new MockAdapter(axios)
+  mock = new MockAdapter(client)
 })
 
 afterEach(() => {