加入随机 userAgent 机制

package.json

 {
   "name": "NeteaseCloudMusicApi",
-  "version": "2.6.2",
+  "version": "2.6.3",
   "description": "网易云音乐 NodeJS 版 API",
   "scripts": {
     "start": "node app.js",

util/util.js

 const Encrypt = require('./crypto.js')
 const http = require('http')
-function createWebAPIRequest(host, path, method, data, cookie, callback, errorcallback) {
+function randomUserAgent() {
+  const userAgentList = [
+    'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/59.0.3071.115 Safari/537.36',
+    'Mozilla/5.0 (iPhone; CPU iPhone OS 9_1 like Mac OS X) AppleWebKit/601.1.46 (KHTML, like Gecko) Version/9.0 Mobile/13B143 Safari/601.1',
+    'Mozilla/5.0 (iPhone; CPU iPhone OS 9_1 like Mac OS X) AppleWebKit/601.1.46 (KHTML, like Gecko) Version/9.0 Mobile/13B143 Safari/601.1',
+    'Mozilla/5.0 (Linux; Android 5.0; SM-G900P Build/LRX21T) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/59.0.3071.115 Mobile Safari/537.36',
+    'Mozilla/5.0 (Linux; Android 6.0; Nexus 5 Build/MRA58N) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/59.0.3071.115 Mobile Safari/537.36',
+    'Mozilla/5.0 (Linux; Android 5.1.1; Nexus 6 Build/LYZ28E) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/59.0.3071.115 Mobile Safari/537.36',
+    'Mozilla/5.0 (iPhone; CPU iPhone OS 10_3_2 like Mac OS X) AppleWebKit/603.2.4 (KHTML, like Gecko) Mobile/14F89;GameHelper',
+    'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_5) AppleWebKit/603.2.4 (KHTML, like Gecko) Version/10.1.1 Safari/603.2.4',
+    'Mozilla/5.0 (iPhone; CPU iPhone OS 10_0 like Mac OS X) AppleWebKit/602.1.38 (KHTML, like Gecko) Version/10.0 Mobile/14A300 Safari/602.1',
+    'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/51.0.2704.103 Safari/537.36',
+    'Mozilla/5.0 (Macintosh; Intel Mac OS X 10.12; rv:46.0) Gecko/20100101 Firefox/46.0',
+    'Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:46.0) Gecko/20100101 Firefox/46.0',
+    'Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.0)',
+    'Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.0; Trident/4.0)',
+    'Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Trident/5.0)',
+    'Mozilla/5.0 (compatible; MSIE 10.0; Windows NT 6.2; Win64; x64; Trident/6.0)',
+    'Mozilla/5.0 (Windows NT 6.3; Win64, x64; Trident/7.0; rv:11.0) like Gecko',
+    'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/42.0.2311.135 Safari/537.36 Edge/13.10586',
+    'Mozilla/5.0 (iPad; CPU OS 10_0 like Mac OS X) AppleWebKit/602.1.38 (KHTML, like Gecko) Version/10.0 Mobile/14A300 Safari/602.1'
+  ]
+  const num = Math.floor(Math.random() * userAgentList.length)
+  return userAgentList[num]
+}
+function createWebAPIRequest(
+  host,
+  path,
+  method,
+  data,
+  cookie,
+  callback,
+  errorcallback
+) {
   let music_req = ''
   const cryptoreq = Encrypt(data)
-  const http_client = http.request({
-    hostname: host,
-    method: method,
-    path: path,
-    headers: {
-      'Accept': '*/*',
-      'Accept-Language': 'zh-CN,zh;q=0.8,gl;q=0.6,zh-TW;q=0.4',
-      'Connection': 'keep-alive',
-      'Content-Type': 'application/x-www-form-urlencoded',
-      'Referer': 'http://music.163.com',
-      'Host': 'music.163.com',
-      'Cookie': cookie,
-      'User-Agent': 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_9_2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/33.0.1750.152 Safari/537.36',
-
+  const http_client = http.request(
+    {
+      hostname: host,
+      method: method,
+      path: path,
+      headers: {
+        Accept: '*/*',
+        'Accept-Language': 'zh-CN,zh;q=0.8,gl;q=0.6,zh-TW;q=0.4',
+        Connection: 'keep-alive',
+        'Content-Type': 'application/x-www-form-urlencoded',
+        Referer: 'http://music.163.com',
+        Host: 'music.163.com',
+        Cookie: cookie,
+        'User-Agent': randomUserAgent()
+      }
     },
-  }, function (res) {
-    res.on('error', function (err) {
-      errorcallback(err)
-    })
-    res.setEncoding('utf8')
-    if (res.statusCode != 200) {
-      createWebAPIRequest(host, path, method, data, cookie, callback)
-      return
-    } else {
-      res.on('data', function (chunk) {
-        music_req += chunk
-      })
-      res.on('end', function () {
-        if (music_req == '') {
-          createWebAPIRequest(host, path, method, data, cookie, callback)
-          return
-        }
-        if (res.headers['set-cookie']) {
-          callback(music_req, res.headers['set-cookie'])
-        } else {
-          callback(music_req)
-        }
+    function(res) {
+      res.on('error', function(err) {
+        errorcallback(err)
       })
+      res.setEncoding('utf8')
+      if (res.statusCode != 200) {
+        createWebAPIRequest(host, path, method, data, cookie, callback)
+        return
+      } else {
+        res.on('data', function(chunk) {
+          music_req += chunk
+        })
+        res.on('end', function() {
+          if (music_req == '') {
+            createWebAPIRequest(host, path, method, data, cookie, callback)
+            return
+          }
+          if (res.headers['set-cookie']) {
+            callback(music_req, res.headers['set-cookie'])
+          } else {
+            callback(music_req)
+          }
+        })
+      }
     }
-  })
-  http_client.write('params=' + cryptoreq.params + '&encSecKey=' + cryptoreq.encSecKey)
+  )
+  http_client.write(
+    'params=' + cryptoreq.params + '&encSecKey=' + cryptoreq.encSecKey
+  )
   http_client.end()
 }
 
 function createRequest(path, method, data, callback, errorcallback) {
   return new Promise((resolve, reject) => {
     let ne_req = ''
-    const http_client = http.request({
-      hostname: 'music.163.com',
-      method: method,
-      path: path,
-      headers: {
-        'Referer': 'http://music.163.com',
-        'Cookie': 'appver=1.5.2',
-        'Content-Type': 'application/x-www-form-urlencoded',
+    const http_client = http.request(
+      {
+        hostname: 'music.163.com',
+        method: method,
+        path: path,
+        headers: {
+          Referer: 'http://music.163.com',
+          Cookie: 'appver=1.5.2',
+          'Content-Type': 'application/x-www-form-urlencoded',
+          'User-Agent': randomUserAgent()
+        }
       },
-    }, res => {
-      res.setEncoding('utf8')
-      res.on('error', err => {
-        reject(err)
-      })
-      res.on('data', chunk => {
-        ne_req += chunk
-      })
-      res.on('end', () => {
-        resolve(ne_req)
-      })
-    })
+      res => {
+        res.setEncoding('utf8')
+        res.on('error', err => {
+          reject(err)
+        })
+        res.on('data', chunk => {
+          ne_req += chunk
+        })
+        res.on('end', () => {
+          resolve(ne_req)
+        })
+      }
+    )
     if (method == 'POST') {
       http_client.write(data)
     }