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Fix disable UDP fragment

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世界 2024-12-12 20:40:01 +08:00
parent 3374a45475
commit 442cceb9fa
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GPG key ID: CD109927C34A63C4
3 changed files with 30 additions and 19 deletions
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17
common/control/frag_darwin.go
View file

@ -4,19 +4,26 @@ import (
"os" "os"
"syscall" "syscall"
N "github.com/sagernet/sing/common/network"
"golang.org/x/sys/unix" "golang.org/x/sys/unix"
) )
func DisableUDPFragment() Func { func DisableUDPFragment() Func {
return func(network, address string, conn syscall.RawConn) error { return func(network, address string, conn syscall.RawConn) error {
if N.NetworkName(network) != N.NetworkUDP {
return nil
}
return Raw(conn, func(fd uintptr) error { return Raw(conn, func(fd uintptr) error {
switch network { if network == "udp" || network == "udp4" {
case "udp4": err := unix.SetsockoptInt(int(fd), unix.IPPROTO_IP, unix.IP_DONTFRAG, 1)
if err := unix.SetsockoptInt(int(fd), unix.IPPROTO_IP, unix.IP_DONTFRAG, 1); err != nil { if err != nil {
return os.NewSyscallError("SETSOCKOPT IP_DONTFRAG", err) return os.NewSyscallError("SETSOCKOPT IP_DONTFRAG", err)
} }
case "udp6": }
if err := unix.SetsockoptInt(int(fd), unix.IPPROTO_IPV6, unix.IPV6_DONTFRAG, 1); err != nil { if network == "udp" || network == "udp6" {
err := unix.SetsockoptInt(int(fd), unix.IPPROTO_IPV6, unix.IPV6_DONTFRAG, 1)
if err != nil {
return os.NewSyscallError("SETSOCKOPT IPV6_DONTFRAG", err) return os.NewSyscallError("SETSOCKOPT IPV6_DONTFRAG", err)
} }
} }

14
common/control/frag_linux.go
View file

@ -11,17 +11,19 @@ import (
func DisableUDPFragment() Func { func DisableUDPFragment() Func {
return func(network, address string, conn syscall.RawConn) error { return func(network, address string, conn syscall.RawConn) error {
switch N.NetworkName(network) { if N.NetworkName(network) != N.NetworkUDP {
case N.NetworkUDP:
default:
return nil return nil
} }
return Raw(conn, func(fd uintptr) error { return Raw(conn, func(fd uintptr) error {
if err := unix.SetsockoptInt(int(fd), unix.IPPROTO_IP, unix.IP_MTU_DISCOVER, unix.IP_PMTUDISC_DO); err != nil { if network == "udp" || network == "udp4" {
err := unix.SetsockoptInt(int(fd), unix.IPPROTO_IP, unix.IP_MTU_DISCOVER, unix.IP_PMTUDISC_DO)
if err != nil {
return os.NewSyscallError("SETSOCKOPT IP_MTU_DISCOVER IP_PMTUDISC_DO", err) return os.NewSyscallError("SETSOCKOPT IP_MTU_DISCOVER IP_PMTUDISC_DO", err)
} }
if network == "udp6" { }
if err := unix.SetsockoptInt(int(fd), unix.IPPROTO_IPV6, unix.IPV6_MTU_DISCOVER, unix.IP_PMTUDISC_DO); err != nil { if network == "udp" || network == "udp6" {
err := unix.SetsockoptInt(int(fd), unix.IPPROTO_IPV6, unix.IPV6_MTU_DISCOVER, unix.IP_PMTUDISC_DO)
if err != nil {
return os.NewSyscallError("SETSOCKOPT IPV6_MTU_DISCOVER IP_PMTUDISC_DO", err) return os.NewSyscallError("SETSOCKOPT IPV6_MTU_DISCOVER IP_PMTUDISC_DO", err)
} }
} }

14
common/control/frag_windows.go
View file

@ -25,17 +25,19 @@ const (
func DisableUDPFragment() Func { func DisableUDPFragment() Func {
return func(network, address string, conn syscall.RawConn) error { return func(network, address string, conn syscall.RawConn) error {
switch N.NetworkName(network) { if N.NetworkName(network) != N.NetworkUDP {
case N.NetworkUDP:
default:
return nil return nil
} }
return Raw(conn, func(fd uintptr) error { return Raw(conn, func(fd uintptr) error {
if err := windows.SetsockoptInt(windows.Handle(fd), windows.IPPROTO_IP, IP_MTU_DISCOVER, IP_PMTUDISC_DO); err != nil { if network == "udp" || network == "udp4" {
err := windows.SetsockoptInt(windows.Handle(fd), windows.IPPROTO_IP, IP_MTU_DISCOVER, IP_PMTUDISC_DO)
if err != nil {
return os.NewSyscallError("SETSOCKOPT IP_MTU_DISCOVER IP_PMTUDISC_DO", err) return os.NewSyscallError("SETSOCKOPT IP_MTU_DISCOVER IP_PMTUDISC_DO", err)
} }
if network == "udp6" { }
if err := windows.SetsockoptInt(windows.Handle(fd), windows.IPPROTO_IPV6, IPV6_MTU_DISCOVER, IP_PMTUDISC_DO); err != nil { if network == "udp" || network == "udp6" {
err := windows.SetsockoptInt(windows.Handle(fd), windows.IPPROTO_IPV6, IPV6_MTU_DISCOVER, IP_PMTUDISC_DO)
if err != nil {
return os.NewSyscallError("SETSOCKOPT IPV6_MTU_DISCOVER IP_PMTUDISC_DO", err) return os.NewSyscallError("SETSOCKOPT IPV6_MTU_DISCOVER IP_PMTUDISC_DO", err)
} }
} }