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This commit is contained in:
JackDoan 2025-11-06 09:18:33 -06:00
parent befba57366
commit e7423d39f9
9 changed files with 223 additions and 16 deletions
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24
wgstack/conn/bind_std.go
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@ -46,6 +46,7 @@ type StdNetBind struct {
blackhole4 bool
blackhole6 bool
q int
}
// NewStdNetBind creates a bind that listens on all interfaces.
@ -56,8 +57,9 @@ func NewStdNetBind() *StdNetBind {
// NewStdNetBindForAddr creates a bind that listens on a specific address.
// If addr is IPv4, only the IPv4 socket will be created. For IPv6, only the
// IPv6 socket will be created.
func NewStdNetBindForAddr(addr netip.Addr, reusePort bool) *StdNetBind {
func NewStdNetBindForAddr(addr netip.Addr, reusePort bool, q int) *StdNetBind {
b := NewStdNetBind()
b.q = q
//if addr.IsValid() {
// if addr.IsUnspecified() {
// // keep dual-stack defaults with empty listen addresses
@ -147,12 +149,24 @@ func (e *StdNetEndpoint) DstToString() string {
return e.AddrPort.String()
}
func listenNet(network string, port int) (*net.UDPConn, int, error) {
conn, err := listenConfig().ListenPacket(context.Background(), network, ":"+strconv.Itoa(port))
func listenNet(network string, port int, q int) (*net.UDPConn, int, error) {
lc := listenConfig(q)
conn, err := lc.ListenPacket(context.Background(), network, ":"+strconv.Itoa(port))
if err != nil {
return nil, 0, err
}
if q == 0 {
if EvilFdZero == 0 {
panic("fuck")
}
err = reusePortHax(EvilFdZero)
if err != nil {
return nil, 0, fmt.Errorf("reuse port hax: %v", err)
}
}
// Retrieve port.
laddr := conn.LocalAddr()
uaddr, err := net.ResolveUDPAddr(
@ -185,13 +199,13 @@ again:
var v4pc *ipv4.PacketConn
var v6pc *ipv6.PacketConn
v4conn, port, err = listenNet("udp4", port)
v4conn, port, err = listenNet("udp4", port, s.q)
if err != nil && !errors.Is(err, syscall.EAFNOSUPPORT) {
return nil, 0, err
}
// Listen on the same port as we're using for ipv4.
v6conn, port, err = listenNet("udp6", port)
v6conn, port, err = listenNet("udp6", port, s.q)
if uport == 0 && errors.Is(err, syscall.EADDRINUSE) && tries < 100 {
v4conn.Close()
tries++