fix: rand.Intn(0) panics

9f3ffaf6 · Steven Allen · 480b3f75 · 9f3ffaf6
Commit 9f3ffaf6 authored Jun 14, 2019 by Steven Allen
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session/session.go session/session.go +3 -0

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--- a/session/session.go
+++ b/session/session.go
@@ -347,6 +347,9 @@ func (s *Session) handlePeriodicSearch(ctx context.Context) {
 }

 func (s *Session) randomLiveWant() cid.Cid {
+	if len(s.liveWants) == 0 {
+		return cid.Cid{}
+	}
 	i := rand.Intn(len(s.liveWants))
 	// picking a random live want
 	for k := range s.liveWants {