fix: not cache nil node

thinkAfCod · GrapeBaBa · commit 81477ca08b74 · 2024-10-23T11:29:29.000+08:00
diff --git a/p2p/discover/portal_protocol.go b/p2p/discover/portal_protocol.go
@@ -401,7 +401,9 @@ func (p *PortalProtocol) cacheNodeById(id enode.ID, addr *net.UDPAddr) {
 	go func() {
 		if _, ok := p.cachedIds[addr.String()]; !ok {
 			n := p.ResolveNodeId(id)
-			p.cacheNode(n)
+			if n != nil {
+				p.cacheNode(n)
+			}
 		}
 	}()
 }

Original file line number	Diff line number	Diff line change
`@@ -401,7 +401,9 @@ func (p PortalProtocol) cacheNodeById(id enode.ID, addr net.UDPAddr) {`
`401`	`401`	`go func() {`
`402`	`402`	`if _, ok := p.cachedIds[addr.String()]; !ok {`
`403`	`403`	`n := p.ResolveNodeId(id)`
`404`		`- p.cacheNode(n)`
	`404`	`+ if n != nil {`
	`405`	`+ p.cacheNode(n)`
	`406`	`+ }`
`405`	`407`	`}`
`406`	`408`	`}()`
`407`	`409`	`}`