fix: App 端 websocket 支持 arraybuffer，支持创建多个连接

src/platforms/app-plus/service/api/network/socket.js

 import {
   unpack,
   publish,
-  requireNativePlugin
+  requireNativePlugin,
+  base64ToArrayBuffer,
+  arrayBufferToBase64
 } from '../../bridge'
 
-let socketTaskId = 0
 const socketTasks = {}
 
 const publishStateChange = (res) => {
   publish('onSocketTaskStateChange', res)
 }
 
-const createSocketTaskById = function (socketTaskId, {
-  url,
-  data,
-  header,
-  method,
-  protocols
-} = {}) {
-  // fixed by hxy 需要测试是否支持 arraybuffer
-  const socket = requireNativePlugin('webSocket')
-  socket.WebSocket(url, Array.isArray(protocols) ? protocols.join(',') : protocols)
-  // socket.binaryType = 'arraybuffer'
-  socketTasks[socketTaskId] = socket
-
+let socket
+function getSocket () {
+  if (socket) {
+    return socket
+  }
+  socket = requireNativePlugin('uni-webSocket')
   socket.onopen(function (e) {
     publishStateChange({
-      socketTaskId,
+      socketTaskId: e.id,
       state: 'open'
     })
   })
   socket.onmessage(function (e) {
+    const data = e.data
     publishStateChange({
-      socketTaskId,
+      socketTaskId: e.id,
       state: 'message',
-      data: e.data
+      data: typeof data === 'object' ? base64ToArrayBuffer(data.base64) : data
     })
   })
   socket.onerror(function (e) {
     publishStateChange({
-      socketTaskId,
+      socketTaskId: e.id,
       state: 'error',
-      errMsg: e.message
+      errMsg: e.data
     })
   })
   socket.onclose(function (e) {
+    const socketTaskId = e.id
     delete socketTasks[socketTaskId]
     publishStateChange({
       socketTaskId,
       state: 'close'
     })
   })
+  return socket
+}
+
+const createSocketTaskById = function (socketTaskId, {
+  url,
+  data,
+  header,
+  method,
+  protocols
+} = {}) {
+  const socket = getSocket()
+  socket.WebSocket({
+    id: socketTaskId,
+    url,
+    protocol: Array.isArray(protocols) ? protocols.join(',') : protocols
+  })
+  socketTasks[socketTaskId] = socket
   return {
     socketTaskId,
     errMsg: 'createSocketTask:ok'
@@ -58,13 +71,14 @@ const createSocketTaskById = function (socketTaskId, {
 }
 
 export function createSocketTask (args) {
-  return createSocketTaskById(++socketTaskId, args)
+  return createSocketTaskById(String(Date.now()), args)
 }
 
 export function operateSocketTask (args) {
   const {
     operationType,
     code,
+    reason,
     data,
     socketTaskId
   } = unpack(args)
@@ -77,13 +91,23 @@ export function operateSocketTask (args) {
   switch (operationType) {
     case 'send':
       if (data) {
-        socket.send(data)
+        socket.send({
+          id: socketTaskId,
+          data: typeof data === 'object' ? {
+            '@type': 'binary',
+            base64: arrayBufferToBase64(data)
+          } : data
+        })
       }
       return {
         errMsg: 'operateSocketTask:ok'
       }
     case 'close':
-      socket.close(code)
+      socket.close({
+        id: socketTaskId,
+        code,
+        reason
+      })
       delete socketTasks[socketTaskId]
       return {
         errMsg: 'operateSocketTask:ok'
@@ -92,4 +116,4 @@ export function operateSocketTask (args) {
   return {
     errMsg: 'operateSocketTask:fail'
   }
-}
+}

src/platforms/app-plus/service/bridge.js

 import {
-  decode
+  decode,
+  encode
 } from 'base64-arraybuffer'
 
 export {
@@ -56,7 +57,7 @@ export function isTabBarPage (path = '') {
         return false
       }
       return page.$page.meta.isTabBar
-    }
+    }
     const route = __uniRoutes.find(route => route.path.slice(1) === path)
     return route && route.meta.isTabBar
   } catch (e) {
@@ -70,3 +71,7 @@ export function isTabBarPage (path = '') {
 export function base64ToArrayBuffer (data) {
   return decode(data)
 }
+
+export function arrayBufferToBase64 (data) {
+  return encode(data)
+}