perf: 优化sse连接

src/components/ShowFile/ShowFile.vue

@@ -1351,7 +1351,6 @@ export default {
     keydown(event) {
       const { keyCode } = event
       const isCmd = this.checkCmdKey(event)
-      console.log('keydown', 'keyCode', keyCode, 'isCmd', isCmd)
 
       const checkPreviewVisible = this.checkPreviewVisible()
       // space

src/sse/SSEClient.js

@@ -5,6 +5,7 @@ import { generateUUID } from "ant-design-vue/lib/vc-select/util";
 
 let eventSource = null;
 let timer = null;
+let lastHeartbeat = new Date().getTime();
 const uuid = generateUUID();
 
 const throttledConnectSSE = _.throttle((username) => {
@@ -31,11 +32,16 @@ function connectToSSE(username) {
 
   eventSource.addEventListener('message', handleMessage);
   eventSource.addEventListener('error', handleError.bind(null, username));
+  startHeartbeatCheck(username);
 }
 
 function handleMessage(event) {
-  const msg = JSON.parse(event.data);
+  if (event.data === 'h') {
-  onMessage(msg);
+    lastHeartbeat = new Date().getTime();
+  } else {
+    const msg = JSON.parse(event.data);
+    onMessage(msg);
+  }
 }
 
 function handleError(username) {
@@ -49,6 +55,18 @@ function clearExistingTimer() {
   }
 }
 
+function startHeartbeatCheck(username) {
+  clearExistingTimer();
+  timer = setInterval(() => {
+    if (eventSource.readyState === 1 && new Date().getTime() - lastHeartbeat > 5000) {
+      eventSource.close();
+    }
+    if (eventSource.readyState === 2) {
+      throttledConnectSSE(username);
+    }
+  }, 3000);
+}
+
 function onMessage(msg) {
   const { url, body } = msg;
   const eventMapping = {

src/store/modules/user.js

@@ -209,7 +209,6 @@ const actions = {
   // update token
   setToken({ commit }, jmalToken) {
     commit('SET_TOKEN', jmalToken)
-    console.log('jmalToken', jmalToken)
   },
 
   // remove share token