From 38771270b7741919a72f53dbd8e31fdb198a43de Mon Sep 17 00:00:00 2001
From: Poonai <rbalajis25@gmail.com>
Date: Fri, 22 Mar 2024 20:07:58 +0530
Subject: [PATCH] fix un subscription deadlock (#116)

* fix unsubscription deadlock

* minor

* minor
---
 ethmonitor/ethmonitor.go | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/ethmonitor/ethmonitor.go b/ethmonitor/ethmonitor.go
index a081427b..49ec00df 100644
--- a/ethmonitor/ethmonitor.go
+++ b/ethmonitor/ethmonitor.go
@@ -986,8 +986,11 @@ func (m *Monitor) NumSubscribers() int {
 
 func (m *Monitor) UnsubscribeAll(err error) {
 	m.mu.Lock()
-	defer m.mu.Unlock()
-	for _, sub := range m.subscribers {
+	var subs []*subscriber
+	subs = append(subs, m.subscribers...)
+	m.mu.Unlock()
+
+	for _, sub := range subs {
 		sub.err = err
 		sub.Unsubscribe()
 	}