修复dns查询问题

src/renderer/utils/music/utils.js

@@ -25,9 +25,9 @@ export const toMD5 = str => crypto.createHash('md5').update(str).digest('hex')
 
 const ipMap = new Map()
 export const getHostIp = hostname => {
-  const ip = ipMap.get(hostname)
-  if (typeof ip === 'string') return ip
-  if (ip === true) return
+  const result = ipMap.get(hostname)
+  if (typeof result === 'object') return result
+  if (result === true) return
   ipMap.set(hostname, true)
   // console.log(hostname)
   dns.lookup(hostname, {
@@ -36,6 +36,13 @@ export const getHostIp = hostname => {
   }, (err, address, family) => {
     if (err) return console.log(err)
     // console.log(address, family)
-    ipMap.set(hostname, address)
+    ipMap.set(hostname, { address, family })
   })
 }
+
+export const dnsLookup = (hostname, options, callback) => {
+  const result = getHostIp(hostname)
+  if (result) return callback(null, result.address, result.family)
+
+  dns.lookup(hostname, options, callback)
+}