chore: move sing-tun's udpTimeout fix to there lib

go.mod

@@ -21,13 +21,13 @@ require (
 	github.com/mdlayher/netlink v1.7.2-0.20221213171556-9881fafed8c7
 	github.com/metacubex/quic-go v0.33.3-0.20230322045857-901b636b4594
 	github.com/metacubex/sing-shadowsocks v0.1.1-0.20230226153717-4e80da7e6947
-	github.com/metacubex/sing-tun v0.1.2
+	github.com/metacubex/sing-tun v0.1.3-0.20230323115055-7935ba0ac8b3
 	github.com/metacubex/sing-wireguard v0.0.0-20230310035749-f7595fcae5cb
 	github.com/miekg/dns v1.1.52
 	github.com/mroth/weightedrand/v2 v2.0.0
 	github.com/oschwald/geoip2-golang v1.8.0
 	github.com/sagernet/netlink v0.0.0-20220905062125-8043b4a9aa97
-	github.com/sagernet/sing v0.2.1-0.20230323055925-1c4c60c739ef
+	github.com/sagernet/sing v0.2.1-0.20230323071235-f8038854d286
 	github.com/sagernet/sing-shadowtls v0.1.0
 	github.com/sagernet/sing-vmess v0.1.3
 	github.com/sagernet/tfo-go v0.0.0-20230303015439-ffcfd8c41cf9
@@ -65,7 +65,7 @@ require (
 	github.com/klauspost/compress v1.15.15 // indirect
 	github.com/klauspost/cpuid/v2 v2.0.12 // indirect
 	github.com/mdlayher/socket v0.4.0 // indirect
-	github.com/metacubex/gvisor v0.0.0-20230315105319-c03631d706be // indirect
+	github.com/metacubex/gvisor v0.0.0-20230323114922-412956fb6a03 // indirect
 	github.com/onsi/ginkgo/v2 v2.2.0 // indirect
 	github.com/oschwald/maxminddb-golang v1.10.0 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect

go.sum

@@ -89,14 +89,14 @@ github.com/mdlayher/raw v0.0.0-20190606142536-fef19f00fc18/go.mod h1:7EpbotpCmVZ
 github.com/mdlayher/raw v0.0.0-20191009151244-50f2db8cc065/go.mod h1:7EpbotpCmVZcu+KCX4g9WaRNuu11uyhiW7+Le1dKawg=
 github.com/mdlayher/socket v0.4.0 h1:280wsy40IC9M9q1uPGcLBwXpcTQDtoGwVt+BNoITxIw=
 github.com/mdlayher/socket v0.4.0/go.mod h1:xxFqz5GRCUN3UEOm9CZqEJsAbe1C8OwSK46NlmWuVoc=
-github.com/metacubex/gvisor v0.0.0-20230315105319-c03631d706be h1:zg8lXHo8t+dCSPHQ/wCJui1V+eO9TSh9NoIjKNvUykA=
-github.com/metacubex/gvisor v0.0.0-20230315105319-c03631d706be/go.mod h1:wqEuzdImyqD2MCGE8CYRJXbB77oSEJeoSSXXdwKjnsE=
+github.com/metacubex/gvisor v0.0.0-20230323114922-412956fb6a03 h1:gREIdurac9fpyBMBRPPMF/Sk3gKfPfdNCa4GQyR9FoA=
+github.com/metacubex/gvisor v0.0.0-20230323114922-412956fb6a03/go.mod h1:wqEuzdImyqD2MCGE8CYRJXbB77oSEJeoSSXXdwKjnsE=
 github.com/metacubex/quic-go v0.33.3-0.20230322045857-901b636b4594 h1:KD96JPdTIayTGGgRl6PuVqo2Bpo6+x3LqDDyqrYDDXw=
 github.com/metacubex/quic-go v0.33.3-0.20230322045857-901b636b4594/go.mod h1:9nOiGX6kqV3+ZbkDKdTNzdFD726QQHPH6WDb36jUSpA=
 github.com/metacubex/sing-shadowsocks v0.1.1-0.20230226153717-4e80da7e6947 h1:NnjC2+aIiyzzvFlo+C2WzBOJdsp+HAtu18FZomqYhUE=
 github.com/metacubex/sing-shadowsocks v0.1.1-0.20230226153717-4e80da7e6947/go.mod h1:U2gwhxzqgbhKCgn2B4z3t0Cj0LpMWFl/02BGCoG421w=
-github.com/metacubex/sing-tun v0.1.2 h1:rQzy+11rt2ZCpCNIsFab5lWoYDTqkdaurofHo8f97yU=
-github.com/metacubex/sing-tun v0.1.2/go.mod h1:+2JxFqCjgSmeeTygZjZSsQbTQUUVXwC3mxnASTs/EhU=
+github.com/metacubex/sing-tun v0.1.3-0.20230323115055-7935ba0ac8b3 h1:LnKcLs0HI0HX4xH/2XerX+1BLXS1Uj6Xvzn20xFuCOk=
+github.com/metacubex/sing-tun v0.1.3-0.20230323115055-7935ba0ac8b3/go.mod h1:0i22nk0tgkQz/N96hrhPib1O/C5AjxSnco7Mwi2YSF0=
 github.com/metacubex/sing-wireguard v0.0.0-20230310035749-f7595fcae5cb h1:uhvzbtOvyg2c1k1H2EeVPuPvTEjDHCq4+U0AljG40P8=
 github.com/metacubex/sing-wireguard v0.0.0-20230310035749-f7595fcae5cb/go.mod h1:7mPG9qYln+CLKBcDt7Dk4c7b3S53VzEfexMVPe6T6FM=
 github.com/metacubex/uber-atomic v0.0.0-20230202125923-feb10b770370 h1:UkViS4DCESAUEYgbIEQdD02hyMacFt6Dny+1MOJtNIo=
@@ -127,8 +127,8 @@ github.com/sagernet/go-tun2socks v1.16.12-0.20220818015926-16cb67876a61/go.mod h
 github.com/sagernet/netlink v0.0.0-20220905062125-8043b4a9aa97 h1:iL5gZI3uFp0X6EslacyapiRz7LLSJyr4RajF/BhMVyE=
 github.com/sagernet/netlink v0.0.0-20220905062125-8043b4a9aa97/go.mod h1:xLnfdiJbSp8rNqYEdIW/6eDO4mVoogml14Bh2hSiFpM=
 github.com/sagernet/sing v0.0.0-20220817130738-ce854cda8522/go.mod h1:QVsS5L/ZA2Q5UhQwLrn0Trw+msNd/NPGEhBKR/ioWiY=
-github.com/sagernet/sing v0.2.1-0.20230323055925-1c4c60c739ef h1:gCIUmEaAbTZnQU6DPcnJkqnD9D0W2f3mp/mx0HKiWI8=
-github.com/sagernet/sing v0.2.1-0.20230323055925-1c4c60c739ef/go.mod h1:9uHswk2hITw8leDbiLS/xn0t9nzBcbePxzm9PJhwdlw=
+github.com/sagernet/sing v0.2.1-0.20230323071235-f8038854d286 h1:0Td2b5l1KgrdlOnbRWgFFWsyb0TLoq/tP6j9Lut4JN0=
+github.com/sagernet/sing v0.2.1-0.20230323071235-f8038854d286/go.mod h1:9uHswk2hITw8leDbiLS/xn0t9nzBcbePxzm9PJhwdlw=
 github.com/sagernet/sing-shadowtls v0.1.0 h1:05MYce8aR5xfKIn+y7xRFsdKhKt44QZTSEQW+lG5IWQ=
 github.com/sagernet/sing-shadowtls v0.1.0/go.mod h1:Kn1VUIprdkwCgkS6SXYaLmIpKzQbqBIKJBMY+RvBhYc=
 github.com/sagernet/sing-vmess v0.1.3 h1:q/+tsF46dvvapL6CpQBgPHJ6nQrDUZqEtLHCbsjO7iM=

listener/sing/sing.go

@@ -3,7 +3,6 @@ package sing
 import (
 	"context"
 	"errors"
-	"go.uber.org/atomic"
 	"golang.org/x/exp/slices"
 	"net"
 	"net/netip"
@@ -15,7 +14,6 @@ import (
 	"github.com/Dreamacro/clash/log"
 	"github.com/Dreamacro/clash/transport/socks5"
 
-	tun "github.com/metacubex/sing-tun"
 	vmess "github.com/sagernet/sing-vmess"
 	"github.com/sagernet/sing/common/buf"
 	E "github.com/sagernet/sing/common/exceptions"
@@ -99,36 +97,23 @@ func (h *ListenerHandler) NewPacketConnection(ctx context.Context, conn network.
 		defer mutex.Unlock()
 		conn2 = nil
 	}()
-	lastWrite := atomic.NewTime(time.Now())
-	needTimeout := tun.NeedTimeoutFromContext(ctx) // gvisor stack call NewPacketConnection() with ContextWithNeedTimeout()
-	udpTimeout := h.UDPTimeout
-	if udpTimeout == 0 {
-		udpTimeout = UDPTimeout
-	}
 	for {
 		buff := buf.NewPacket() // do not use stack buffer
-		if needTimeout {
-			_ = conn.SetReadDeadline(time.Now().Add(udpTimeout))
-		}
 		dest, err := conn.ReadPacket(buff)
 		if err != nil {
 			buff.Release()
-			if needTimeout && E.IsTimeout(err) && time.Now().Sub(lastWrite.Load()) < udpTimeout {
-				continue // someone write successful in time, so we continue read instead of return error
-			}
 			if E.IsClosed(err) {
 				break
 			}
 			return err
 		}
 		target := socks5.ParseAddr(dest.String())
 		packet := &packet{
-			conn:      &conn2,
-			mutex:     &mutex,
-			rAddr:     metadata.Source.UDPAddr(),
-			lAddr:     conn.LocalAddr(),
-			buff:      buff,
-			lastWrite: lastWrite,
+			conn:  &conn2,
+			mutex: &mutex,
+			rAddr: metadata.Source.UDPAddr(),
+			lAddr: conn.LocalAddr(),
+			buff:  buff,
 		}
 		select {
 		case h.UdpIn <- inbound.NewPacket(target, packet, h.Type, additions...):
@@ -143,12 +128,11 @@ func (h *ListenerHandler) NewError(ctx context.Context, err error) {
 }
 
 type packet struct {
-	conn      *network.PacketConn
-	mutex     *sync.Mutex
-	rAddr     net.Addr
-	lAddr     net.Addr
-	buff      *buf.Buffer
-	lastWrite *atomic.Time
+	conn  *network.PacketConn
+	mutex *sync.Mutex
+	rAddr net.Addr
+	lAddr net.Addr
+	buff  *buf.Buffer
 }
 
 func (c *packet) Data() []byte {
@@ -179,7 +163,6 @@ func (c *packet) WriteBack(b []byte, addr net.Addr) (n int, err error) {
 	if err != nil {
 		return
 	}
-	c.lastWrite.Store(time.Now())
 	return
 }