From 2f849ade8204a4b417202d90c66e2f5bef4e965d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Felf=C3=B6ldi=20Zsolt?= <zsfelfoldi@gmail.com>
Date: Sat, 10 Feb 2018 13:33:52 +0100
Subject: [PATCH] les: fix server panic when discovery disabled (#16055)
---
les/server.go | 20 +++++++++++---------
1 file changed, 11 insertions(+), 9 deletions(-)
diff --git a/les/server.go b/les/server.go
index 85ebbf898..65b8c357d 100644
--- a/les/server.go
+++ b/les/server.go
@@ -111,15 +111,17 @@ func (s *LesServer) Protocols() []p2p.Protocol {
// Start starts the LES server
func (s *LesServer) Start(srvr *p2p.Server) {
s.protocolManager.Start(s.config.LightPeers)
- for _, topic := range s.lesTopics {
- topic := topic
- go func() {
- logger := log.New("topic", topic)
- logger.Info("Starting topic registration")
- defer logger.Info("Terminated topic registration")
-
- srvr.DiscV5.RegisterTopic(topic, s.quitSync)
- }()
+ if srvr.DiscV5 != nil {
+ for _, topic := range s.lesTopics {
+ topic := topic
+ go func() {
+ logger := log.New("topic", topic)
+ logger.Info("Starting topic registration")
+ defer logger.Info("Terminated topic registration")
+
+ srvr.DiscV5.RegisterTopic(topic, s.quitSync)
+ }()
+ }
}
s.privateKey = srvr.PrivateKey
s.protocolManager.blockLoop()
--
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