fix(loop): local loopback

gold/link/listen.go

@@ -2,11 +2,9 @@ package link
 
 import (
 	"bytes"
-	"errors"
 	"io"
 	"net"
 	"net/netip"
-	"os"
 	"runtime"
 	"strconv"
 	"sync"
@@ -50,19 +48,11 @@ func (m *Me) listenudp() (conn *net.UDPConn, err error) {
 			}
 			logrus.Debugln("[listen] lock index", i)
 			lbf := listenbuff[i*65536 : (i+1)*65536]
-			err = conn.SetDeadline(time.Now().Add(time.Second))
-			if err != nil {
-				logrus.Warnln("[listen] set ddl err:", err)
-			}
-		READ:
 			n, addr, err := conn.ReadFromUDP(lbf)
 			if m.loop == nil {
 				logrus.Warnln("[listen] quit listening")
 				return
 			}
-			if errors.Is(err, os.ErrDeadlineExceeded) {
-				goto READ
-			}
 			if err != nil {
 				logrus.Warnln("[listen] read from udp err, reconnect:", err)
 				conn, err = net.ListenUDP("udp", net.UDPAddrFromAddrPort(netip.MustParseAddrPort(m.udpep.String())))

gold/link/me.go

@@ -86,9 +86,13 @@ func NewMe(cfg *MyConfig) (m Me) {
 		cache: ttl.NewCache[string, *Link](time.Minute),
 	}
 	m.router.SetDefault(nil)
+	_, localp, err := net.SplitHostPort(m.EndPoint().String())
+	if err != nil {
+		panic(err)
+	}
 	m.loop = m.AddPeer(&PeerConfig{
 		PeerIP:     m.me.String(),
-		EndPoint:   "127.0.0.1:56789",
+		EndPoint:   "127.0.0.1:" + localp,
 		AllowedIPs: []string{cfg.MyIPwithMask},
 		NoPipe:     cfg.NIC != nil,
 		MTU:        cfg.MTU,