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Retry jitter #1036

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Merged
hiroshihorie merged 2 commits into from
Mar 24, 2026
Merged

Retry jitter #1036

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9d6ad5b
impl 1
hiroshihorie Mar 23, 2026
15d2e7f
Create reconnect-jitter
hiroshihorie Mar 23, 2026
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1 change: 1 addition & 0 deletions .changes/reconnect-jitter
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Original file line number Diff line number Diff line change
@@ -0,0 +1 @@
patch type="fixed" "Add jitter to reconnect retry delays"
7 changes: 6 additions & 1 deletion lib/src/core/engine.dart
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Expand Up @@ -15,6 +15,7 @@
// ignore_for_file: deprecated_member_use_from_same_package

import 'dart:async';
import 'dart:math' as math;
import 'dart:typed_data' show Uint8List;

import 'package:flutter/foundation.dart' show kDebugMode, kIsWeb;
Expand Down Expand Up @@ -1013,7 +1014,11 @@ class Engine extends Disposable with EventsEmittable<EngineEvent> {
return;
}

final delay = defaultRetryDelaysInMs[reconnectAttempts!];
var delay = defaultRetryDelaysInMs[reconnectAttempts!];
// Add random jitter to prevent thundering herd on reconnect
if (reconnectAttempts! > 1) {
delay += math.Random().nextInt(1000);
}

events.emit(EngineAttemptReconnectEvent(
attempt: reconnectAttempts! + 1,
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