feat(p2p/server): add UDP port mapping goroutine to wait group ethereum#20846 (#2408)

gzliudan · ucwong · web-flow · commit 24ee5c1a2aab · 2026-06-29T15:15:11.000+08:00
Co-authored-by: ucwong &lt;ucwong@126.com&gt;
diff --git a/p2p/server.go b/p2p/server.go
@@ -545,7 +545,9 @@ func (srv *Server) setupDiscovery() error {
 	srv.log.Debug("UDP listener up", "addr", realaddr)
 	if srv.NAT != nil {
 		if !realaddr.IP.IsLoopback() {
-			go nat.Map(srv.NAT, srv.quit, "udp", realaddr.Port, realaddr.Port, "ethereum discovery")
+			srv.loopWG.Go(func() {
+				nat.Map(srv.NAT, srv.quit, "udp", realaddr.Port, realaddr.Port, "ethereum discovery")
+			})
 		}
 	}
 	srv.localnode.SetFallbackUDP(realaddr.Port)

Original file line number	Diff line number	Diff line change
`@@ -545,7 +545,9 @@ func (srv *Server) setupDiscovery() error {`
`545`	`545`	`srv.log.Debug("UDP listener up", "addr", realaddr)`
`546`	`546`	`if srv.NAT != nil {`
`547`	`547`	`if !realaddr.IP.IsLoopback() {`
`548`		`- go nat.Map(srv.NAT, srv.quit, "udp", realaddr.Port, realaddr.Port, "ethereum discovery")`
	`548`	`+ srv.loopWG.Go(func() {`
	`549`	`+ nat.Map(srv.NAT, srv.quit, "udp", realaddr.Port, realaddr.Port, "ethereum discovery")`
	`550`	`+ })`
`549`	`551`	`}`
`550`	`552`	`}`
`551`	`553`	`srv.localnode.SetFallbackUDP(realaddr.Port)`