From 7e3e54f55ecf644698502037bd413f5c0117ad6d Mon Sep 17 00:00:00 2001
From: Piotr Piotrowski <piotr@synadia.com>
Date: Tue, 12 Sep 2023 16:24:25 +0200
Subject: [PATCH] [FIXED] Nil pointer when sub is nil in service API err
 handler (#1371)

Signed-off-by: Piotr Piotrowski <piotr@synadia.com>
---
 micro/service.go | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/micro/service.go b/micro/service.go
index cee4ef3af..5d2dd3656 100644
--- a/micro/service.go
+++ b/micro/service.go
@@ -474,6 +474,10 @@ func (s *service) wrapConnectionEventCallbacks() {
 	s.natsHandlers.asyncErr = s.nc.ErrorHandler()
 	if s.natsHandlers.asyncErr != nil {
 		s.nc.SetErrorHandler(func(c *nats.Conn, sub *nats.Subscription, err error) {
+			if sub == nil {
+				s.natsHandlers.asyncErr(c, sub, err)
+				return
+			}
 			endpoint, match := s.matchSubscriptionSubject(sub.Subject)
 			if !match {
 				s.natsHandlers.asyncErr(c, sub, err)
@@ -496,6 +500,9 @@ func (s *service) wrapConnectionEventCallbacks() {
 		})
 	} else {
 		s.nc.SetErrorHandler(func(c *nats.Conn, sub *nats.Subscription, err error) {
+			if sub == nil {
+				return
+			}
 			endpoint, match := s.matchSubscriptionSubject(sub.Subject)
 			if !match {
 				return