Use randomized setTimeout when fallback-polling and re-add since_id (#7522)

1 files changed, 10 insertions, 5 deletions

diff --git a/app/javascript/mastodon/stream.js b/app/javascript/mastodon/stream.js
index 6c67ba275..9928d0dd7 100644
--- a/app/javascript/mastodon/stream.js
+++ b/app/javascript/mastodon/stream.js
@@ -1,21 +1,24 @@
 import WebSocketClient from 'websocket.js';
 
+const randomIntUpTo = max => Math.floor(Math.random() * Math.floor(max));
+
 export function connectStream(path, pollingRefresh = null, callbacks = () => ({ onDisconnect() {}, onReceive() {} })) {
   return (dispatch, getState) => {
     const streamingAPIBaseURL = getState().getIn(['meta', 'streaming_api_base_url']);
     const accessToken = getState().getIn(['meta', 'access_token']);
     const { onDisconnect, onReceive } = callbacks(dispatch, getState);
+
     let polling = null;
 
     const setupPolling = () => {
-      polling = setInterval(() => {
-        pollingRefresh(dispatch);
-      }, 20000);
+      pollingRefresh(dispatch, () => {
+        polling = setTimeout(() => setupPolling(), 20000 + randomIntUpTo(20000));
+      });
     };
 
     const clearPolling = () => {
       if (polling) {
-        clearInterval(polling);
+        clearTimeout(polling);
         polling = null;
       }
     };
@@ -29,8 +32,9 @@ export function connectStream(path, pollingRefresh = null, callbacks = () => ({
 
       disconnected () {
         if (pollingRefresh) {
-          setupPolling();
+          polling = setTimeout(() => setupPolling(), randomIntUpTo(40000));
         }
+
         onDisconnect();
       },
 
@@ -51,6 +55,7 @@ export function connectStream(path, pollingRefresh = null, callbacks = () => ({
       if (subscription) {
         subscription.close();
       }
+
       clearPolling();
     };