fix: 修复NMTID保底有随机生成导致服务器永远不会下放, 致使重复进入分支浪费性能

util/request.js

@@ -69,6 +69,7 @@ const WNMCID = (function () {
 })()
 
 let NMTID = ''
+let NMTID_RETRIES_LEFT = 3
 
 // 预先定义osMap
 const osMap = {
@@ -138,7 +139,7 @@ const chooseUserAgent = (crypto, uaType = 'pc') => {
 }
 
 // cookie处理
-const processCookieObject = (cookie, uri) => {
+const processCookieObject = (cookie, crypto) => {
   const _ntes_nuid = CryptoJS.lib.WordArray.random(32).toString()
   const os = osMap[cookie.os] || osMap['pc']
 
@@ -157,10 +158,15 @@ const processCookieObject = (cookie, uri) => {
     appver: cookie.appver || os.appver,
   }
 
-  processedCookie['NMTID'] =
-    cookie.NMTID ||
-    NMTID ||
-    '00O' + CryptoJS.lib.WordArray.random(38).toString()
+  // 服务端下发条件为不带NMTID请求任意eapi加密方式接口
+  if (cookie.NMTID) {
+    processedCookie['NMTID'] = cookie.NMTID
+  } else if (NMTID) {
+    processedCookie['NMTID'] = NMTID
+  } else if (NMTID_RETRIES_LEFT <= 0 || crypto !== 'eapi') {
+    processedCookie['NMTID'] =
+      '00O' + CryptoJS.lib.WordArray.random(19).toString()
+  }
 
   if (!processedCookie.MUSIC_U) {
     processedCookie.MUSIC_A = processedCookie.MUSIC_A || anonymous_token
@@ -208,6 +214,12 @@ const createRequest = async (uri, data, options) => {
     const headers = options.headers ? { ...options.headers } : {}
     const ip = options.realIP || options.ip || ''
 
+    // 加密方式选择
+    let crypto = options.crypto
+    if (crypto === '') {
+      crypto = APP_CONF.encrypt ? 'eapi' : 'api'
+    }
+
     // IP头设置
     if (ip) {
       headers['X-Real-IP'] = ip
@@ -220,19 +232,13 @@ const createRequest = async (uri, data, options) => {
     }
 
     if (typeof cookie === 'object') {
-      cookie = processCookieObject(cookie, uri)
+      cookie = processCookieObject(cookie, crypto)
       headers['Cookie'] = cookieObjToString(cookie)
     }
     let url = ''
     let encryptData = ''
-    let crypto = options.crypto
     const csrfToken = cookie['__csrf'] || ''
 
-    // 加密方式选择
-    if (crypto === '') {
-      crypto = APP_CONF.encrypt ? 'eapi' : 'api'
-    }
-
     const answer = { status: 500, body: {}, cookie: [] }
 
     data.e_r = toBoolean(
@@ -335,9 +341,8 @@ const createRequest = async (uri, data, options) => {
 
         if (cookie.MUSIC_U) header['MUSIC_U'] = cookie.MUSIC_U
         if (cookie.MUSIC_A) header['MUSIC_A'] = cookie.MUSIC_A
-        if (options.checkToken) {
-          header['X-antiCheatToken'] = token
-        }
+        if (options.checkToken) header['X-antiCheatToken'] = token
+        if (crypto === 'eapi' && cookie.NMTID) header['NMTID'] = cookie.NMTID
 
         headers['Cookie'] = createHeaderCookie(header)
         headers['User-Agent'] =
@@ -427,11 +432,19 @@ const createRequest = async (uri, data, options) => {
 
         const cleanCookie = (x) => x.replace(/\s*Domain=[^(;|$)]+;*/, '')
 
-        if (crypto === 'eapi' && !NMTID) {
+        // 仅对真正未携带 NMTID 的探测请求采集并消耗重试次数
+        if (
+          crypto === 'eapi' &&
+          !NMTID &&
+          NMTID_RETRIES_LEFT > 0 &&
+          !cookie.NMTID
+        ) {
+          NMTID_RETRIES_LEFT--
           answer.cookie = setCookies.map((x) => {
             const cleaned = cleanCookie(x)
             const match = x.match(/(?:^|;\s*)NMTID=([^;]+)/)
             if (match) {
+              //不需要处理竞争, 官方客户端真实操作
               NMTID = match[1]
             }
             return cleaned