Fix RandRouterPort function

fd0f3d7c · suyanlong · a00052d2 · fd0f3d7c
Commit fd0f3d7c authored Jan 05, 2022 by suyanlong
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map.go internal/port/map.go +2 -0

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--- a/internal/port/map.go
+++ b/internal/port/map.go
@@ -133,6 +133,7 @@ func (p *PortMap) RandRouterPort() Port {
 	p.rw.RLock()
 	defer p.rw.RUnlock()
 	l := len(p.peerPort)
+	if l > 0 {
 		i := rand.Intn(l)
 		j := 0
 		for _, pt := range p.peerPort {
@@ -141,6 +142,7 @@ func (p *PortMap) RandRouterPort() Port {
 			}
 			j++
 		}
+	}
 	return nil
 }