Close the UDPConn before returning if `setUDPSocketOptions` went wrong (#1227)

Detail: https://github.com/miekg/dns/issues/1226
2021-02-25 16:24:39 +08:00 · 2021-02-25 16:24:39 +08:00 · 2543d8bb2d
parent c08efdcc07
commit 2543d8bb2d
1 changed files with 1 additions and 0 deletions
--- a/server.go
+++ b/server.go
@ -321,6 +321,7 @@ func (srv *Server) ListenAndServe() error {
 		}
 		u := l.(*net.UDPConn)
 		if e := setUDPSocketOptions(u); e != nil {
+			u.Close()
 			return e
 		}
 		srv.PacketConn = l