mirror of
https://github.com/XTLS/Xray-core.git
synced 2024-11-04 12:09:19 +02:00
Optimize TPROXY Inbound UDP write back
Enhanced stability.
This commit is contained in:
parent
ae98dc75cf
commit
b60cf02603
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@ -277,17 +277,17 @@ func (w *PacketWriter) WriteMultiBuffer(mb buf.MultiBuffer) error {
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w.mark,
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)
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if err != nil {
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newError(err).WriteToLog()
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b.Release()
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buf.ReleaseMulti(mb)
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return err
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continue
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}
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w.conns[*b.UDP] = conn
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}
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_, err = conn.WriteTo(b.Bytes(), w.back)
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if err != nil {
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conn.Close()
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w.conns[*b.UDP] = nil
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newError(err).WriteToLog()
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w.conns[*b.UDP] = nil
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conn.Close()
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}
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b.Release()
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} else {
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@ -12,68 +12,55 @@ import (
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)
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func FakeUDP(addr *net.UDPAddr, mark int) (net.PacketConn, error) {
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var af int
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var sockaddr syscall.Sockaddr
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localSocketAddress, af, err := udpAddrToSocketAddr(addr)
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if err != nil {
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return nil, &net.OpError{Op: "fake", Err: fmt.Errorf("build local socket address: %s", err)}
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if len(addr.IP) == 4 {
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af = syscall.AF_INET
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sockaddr = &syscall.SockaddrInet4{Port: addr.Port}
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copy(sockaddr.(*syscall.SockaddrInet4).Addr[:], addr.IP)
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} else {
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af = syscall.AF_INET6
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sockaddr = &syscall.SockaddrInet6{Port: addr.Port}
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copy(sockaddr.(*syscall.SockaddrInet6).Addr[:], addr.IP)
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}
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fileDescriptor, err := syscall.Socket(af, syscall.SOCK_DGRAM, 0)
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if err != nil {
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var fd int
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var err error
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if fd, err = syscall.Socket(af, syscall.SOCK_DGRAM, 0); err != nil {
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return nil, &net.OpError{Op: "fake", Err: fmt.Errorf("socket open: %s", err)}
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}
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if mark != 0 {
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if err = syscall.SetsockoptInt(fileDescriptor, syscall.SOL_SOCKET, syscall.SO_MARK, mark); err != nil {
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syscall.Close(fileDescriptor)
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if err = syscall.SetsockoptInt(fd, syscall.SOL_SOCKET, syscall.SO_MARK, mark); err != nil {
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syscall.Close(fd)
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return nil, &net.OpError{Op: "fake", Err: fmt.Errorf("set socket option: SO_MARK: %s", err)}
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}
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}
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if err = syscall.SetsockoptInt(fileDescriptor, syscall.SOL_SOCKET, syscall.SO_REUSEADDR, 1); err != nil {
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syscall.Close(fileDescriptor)
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return nil, &net.OpError{Op: "fake", Err: fmt.Errorf("set socket option: SO_REUSEADDR: %s", err)}
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}
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if err = syscall.SetsockoptInt(fileDescriptor, syscall.SOL_SOCKET, unix.SO_REUSEPORT, 1); err != nil {
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syscall.Close(fileDescriptor)
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return nil, &net.OpError{Op: "fake", Err: fmt.Errorf("set socket option: SO_REUSEPORT: %s", err)}
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}
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if err = syscall.SetsockoptInt(fileDescriptor, syscall.SOL_IP, syscall.IP_TRANSPARENT, 1); err != nil {
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syscall.Close(fileDescriptor)
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if err = syscall.SetsockoptInt(fd, syscall.SOL_IP, syscall.IP_TRANSPARENT, 1); err != nil {
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syscall.Close(fd)
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return nil, &net.OpError{Op: "fake", Err: fmt.Errorf("set socket option: IP_TRANSPARENT: %s", err)}
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}
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if err = syscall.Bind(fileDescriptor, localSocketAddress); err != nil {
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syscall.Close(fileDescriptor)
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syscall.SetsockoptInt(fd, syscall.SOL_SOCKET, syscall.SO_REUSEADDR, 1)
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syscall.SetsockoptInt(fd, syscall.SOL_SOCKET, unix.SO_REUSEPORT, 1)
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if err = syscall.Bind(fd, sockaddr); err != nil {
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syscall.Close(fd)
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return nil, &net.OpError{Op: "fake", Err: fmt.Errorf("socket bind: %s", err)}
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}
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fdFile := os.NewFile(uintptr(fileDescriptor), fmt.Sprintf("net-udp-fake-%s", addr.String()))
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fdFile := os.NewFile(uintptr(fd), fmt.Sprintf("net-udp-fake-%s", addr.String()))
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defer fdFile.Close()
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packetConn, err := net.FilePacketConn(fdFile)
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if err != nil {
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syscall.Close(fileDescriptor)
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syscall.Close(fd)
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return nil, &net.OpError{Op: "fake", Err: fmt.Errorf("convert file descriptor to connection: %s", err)}
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}
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return packetConn, nil
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}
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func udpAddrToSocketAddr(addr *net.UDPAddr) (syscall.Sockaddr, int, error) {
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switch {
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case addr.IP.To4() != nil:
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ip := [4]byte{}
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copy(ip[:], addr.IP.To4())
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return &syscall.SockaddrInet4{Addr: ip, Port: addr.Port}, syscall.AF_INET, nil
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default:
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ip := [16]byte{}
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copy(ip[:], addr.IP.To16())
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return &syscall.SockaddrInet6{Addr: ip, Port: addr.Port, ZoneId: 0}, syscall.AF_INET6, nil
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}
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}
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