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fix ipv6 for udp tproxy

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This commit is contained in:
ginuerzh 2024-07-11 22:27:02 +08:00
parent 4a4c64cc66
commit 2a75be91b0
1 changed files with 23 additions and 21 deletions
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14
listener/redirect/udp/listener_linux.go
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@ -21,29 +21,28 @@ import (
// https://github.com/KatelynHaworth/go-tproxy
func (l *redirectListener) listenUDP(addr string) (*net.UDPConn, error) {
/*
laddr, err := net.ResolveUDPAddr("udp", addr)
if err != nil {
return nil, err
}
*/
lc := net.ListenConfig{
Control: func(network, address string, c syscall.RawConn) error {
return c.Control(func(fd uintptr) {
if laddr.IP.To4() != nil {
if err := unix.SetsockoptInt(int(fd), unix.SOL_IP, unix.IP_TRANSPARENT, 1); err != nil {
l.logger.Errorf("SetsockoptInt(SOL_IP, IP_TRANSPARENT, 1): %v", err)
}
if err := unix.SetsockoptInt(int(fd), unix.SOL_IP, unix.IP_RECVORIGDSTADDR, 1); err != nil {
l.logger.Errorf("SetsockoptInt(SOL_IP, IP_RECVORIGDSTADDR, 1): %v", err)
}
} else {
if err := unix.SetsockoptInt(int(fd), unix.SOL_IPV6, unix.IPV6_TRANSPARENT, 1); err != nil {
l.logger.Errorf("SetsockoptInt(SOL_IPV6, IPV6_TRANSPARENT, 1): %v", err)
}
if err := unix.SetsockoptInt(int(fd), unix.SOL_IPV6, unix.IPV6_RECVORIGDSTADDR, 1); err != nil {
l.logger.Errorf("SetsockoptInt(SOL_IPV6, IPV6_RECVORIGDSTADDR, 1): %v", err)
}
}
})
},
}
@ -244,11 +243,14 @@ func udpAddrToSocketAddr(addr *net.UDPAddr) (unix.Sockaddr, error) {
ip := [16]byte{}
copy(ip[:], addr.IP.To16())
var err error
var zoneID uint64
if addr.Zone != "" {
zoneID, _ = strconv.ParseUint(addr.Zone, 10, 32)
if zoneID == 0 {
zoneID = 2
zoneID, err = strconv.ParseUint(addr.Zone, 10, 32)
if err != nil {
if itf, _ := net.InterfaceByName(addr.Zone); itf != nil {
zoneID = uint64(itf.Index)
}
}
}