version: bump snapshot

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>

Makefile

@@ -23,7 +23,7 @@ install: wireguard-go
 	@install -v -d "$(DESTDIR)$(BINDIR)" && install -v -m 0755 "$<" "$(DESTDIR)$(BINDIR)/wireguard-go"
 
 test:
-	go test -v ./...
+	go test ./...
 
 clean:
 	rm -f wireguard-go

README.md

@@ -46,7 +46,7 @@ This will run on OpenBSD. It does not yet support sticky sockets. Fwmark is mapp
 
 ## Building
 
-This requires an installation of [go](https://golang.org) ≥ 1.16.
+This requires an installation of [go](https://golang.org) ≥ 1.18.
 
 ```
 $ git clone https://git.zx2c4.com/wireguard-go

conn/bind_linux.go

@@ -8,6 +8,7 @@ package conn
 import (
 	"errors"
 	"net"
+	"net/netip"
 	"strconv"
 	"sync"
 	"syscall"
@@ -65,37 +66,37 @@ type LinuxSocketBind struct {
 func NewLinuxSocketBind() Bind { return &LinuxSocketBind{sock4: -1, sock6: -1} }
 func NewDefaultBind() Bind     { return NewLinuxSocketBind() }
 
-var _ Endpoint = (*LinuxSocketEndpoint)(nil)
+var (
-var _ Bind = (*LinuxSocketBind)(nil)
+	_ Endpoint = (*LinuxSocketEndpoint)(nil)
+	_ Bind     = (*LinuxSocketBind)(nil)
+)
 
 func (*LinuxSocketBind) ParseEndpoint(s string) (Endpoint, error) {
 	var end LinuxSocketEndpoint
-	addr, err := parseEndpoint(s)
+	e, err := netip.ParseAddrPort(s)
 	if err != nil {
 		return nil, err
 	}
 
-	ipv4 := addr.IP.To4()
+	if e.Addr().Is4() {
-	if ipv4 != nil {
 		dst := end.dst4()
 		end.isV6 = false
-		dst.Port = addr.Port
+		dst.Port = int(e.Port())
-		copy(dst.Addr[:], ipv4)
+		dst.Addr = e.Addr().As4()
 		end.ClearSrc()
 		return &end, nil
 	}
 
-	ipv6 := addr.IP.To16()
+	if e.Addr().Is6() {
-	if ipv6 != nil {
+		zone, err := zoneToUint32(e.Addr().Zone())
-		zone, err := zoneToUint32(addr.Zone)
 		if err != nil {
 			return nil, err
 		}
 		dst := end.dst6()
 		end.isV6 = true
-		dst.Port = addr.Port
+		dst.Port = int(e.Port())
 		dst.ZoneId = zone
-		copy(dst.Addr[:], ipv6[:])
+		dst.Addr = e.Addr().As16()
 		end.ClearSrc()
 		return &end, nil
 	}
@@ -172,7 +173,6 @@ func (bind *LinuxSocketBind) SetMark(value uint32) error {
 			unix.SO_MARK,
 			int(value),
 		)
-
 		if err != nil {
 			return err
 		}
@@ -185,7 +185,6 @@ func (bind *LinuxSocketBind) SetMark(value uint32) error {
 			unix.SO_MARK,
 			int(value),
 		)
-
 		if err != nil {
 			return err
 		}
@@ -266,29 +265,19 @@ func (bind *LinuxSocketBind) Send(buff []byte, end Endpoint) error {
 	}
 }
 
-func (end *LinuxSocketEndpoint) SrcIP() net.IP {
+func (end *LinuxSocketEndpoint) SrcIP() netip.Addr {
 	if !end.isV6 {
-		return net.IPv4(
+		return netip.AddrFrom4(end.src4().Src)
-			end.src4().Src[0],
-			end.src4().Src[1],
-			end.src4().Src[2],
-			end.src4().Src[3],
-		)
 	} else {
-		return end.src6().src[:]
+		return netip.AddrFrom16(end.src6().src)
 	}
 }
 
-func (end *LinuxSocketEndpoint) DstIP() net.IP {
+func (end *LinuxSocketEndpoint) DstIP() netip.Addr {
 	if !end.isV6 {
-		return net.IPv4(
+		return netip.AddrFrom4(end.dst4().Addr)
-			end.dst4().Addr[0],
-			end.dst4().Addr[1],
-			end.dst4().Addr[2],
-			end.dst4().Addr[3],
-		)
 	} else {
-		return end.dst6().Addr[:]
+		return netip.AddrFrom16(end.dst6().Addr)
 	}
 }
 
@@ -305,14 +294,13 @@ func (end *LinuxSocketEndpoint) SrcToString() string {
 }
 
 func (end *LinuxSocketEndpoint) DstToString() string {
-	var udpAddr net.UDPAddr
+	var port int
-	udpAddr.IP = end.DstIP()
 	if !end.isV6 {
-		udpAddr.Port = end.dst4().Port
+		port = end.dst4().Port
 	} else {
-		udpAddr.Port = end.dst6().Port
+		port = end.dst6().Port
 	}
-	return udpAddr.String()
+	return netip.AddrPortFrom(end.DstIP(), uint16(port)).String()
 }
 
 func (end *LinuxSocketEndpoint) ClearDst() {
@@ -339,7 +327,6 @@ func zoneToUint32(zone string) (uint32, error) {
 }
 
 func create4(port uint16) (int, uint16, error) {
-
 	// create socket
 
 	fd, err := unix.Socket(
@@ -347,7 +334,6 @@ func create4(port uint16) (int, uint16, error) {
 		unix.SOCK_DGRAM,
 		0,
 	)
-
 	if err != nil {
 		return -1, 0, err
 	}
@@ -383,7 +369,6 @@ func create4(port uint16) (int, uint16, error) {
 }
 
 func create6(port uint16) (int, uint16, error) {
-
 	// create socket
 
 	fd, err := unix.Socket(
@@ -391,7 +376,6 @@ func create6(port uint16) (int, uint16, error) {
 		unix.SOCK_DGRAM,
 		0,
 	)
-
 	if err != nil {
 		return -1, 0, err
 	}
@@ -422,7 +406,6 @@ func create6(port uint16) (int, uint16, error) {
 		}
 
 		return unix.Bind(fd, &addr)
-
 	}(); err != nil {
 		unix.Close(fd)
 		return -1, 0, err
@@ -437,7 +420,6 @@ func create6(port uint16) (int, uint16, error) {
 }
 
 func send4(sock int, end *LinuxSocketEndpoint, buff []byte) error {
-
 	// construct message header
 
 	cmsg := struct {
@@ -477,7 +459,6 @@ func send4(sock int, end *LinuxSocketEndpoint, buff []byte) error {
 }
 
 func send6(sock int, end *LinuxSocketEndpoint, buff []byte) error {
-
 	// construct message header
 
 	cmsg := struct {
@@ -521,7 +502,6 @@ func send6(sock int, end *LinuxSocketEndpoint, buff []byte) error {
 }
 
 func receive4(sock int, buff []byte, end *LinuxSocketEndpoint) (int, error) {
-
 	// construct message header
 
 	var cmsg struct {
@@ -530,7 +510,6 @@ func receive4(sock int, buff []byte, end *LinuxSocketEndpoint) (int, error) {
 	}
 
 	size, _, _, newDst, err := unix.Recvmsg(sock, buff, (*[unsafe.Sizeof(cmsg)]byte)(unsafe.Pointer(&cmsg))[:], 0)
-
 	if err != nil {
 		return 0, err
 	}
@@ -553,7 +532,6 @@ func receive4(sock int, buff []byte, end *LinuxSocketEndpoint) (int, error) {
 }
 
 func receive6(sock int, buff []byte, end *LinuxSocketEndpoint) (int, error) {
-
 	// construct message header
 
 	var cmsg struct {
@@ -562,7 +540,6 @@ func receive6(sock int, buff []byte, end *LinuxSocketEndpoint) (int, error) {
 	}
 
 	size, _, _, newDst, err := unix.Recvmsg(sock, buff, (*[unsafe.Sizeof(cmsg)]byte)(unsafe.Pointer(&cmsg))[:], 0)
-
 	if err != nil {
 		return 0, err
 	}

conn/bind_std.go

@@ -8,6 +8,7 @@ package conn
 import (
 	"errors"
 	"net"
+	"net/netip"
 	"sync"
 	"syscall"
 )
@@ -28,22 +29,29 @@ func NewStdNetBind() Bind { return &StdNetBind{} }
 
 type StdNetEndpoint net.UDPAddr
 
-var _ Bind = (*StdNetBind)(nil)
+var (
-var _ Endpoint = (*StdNetEndpoint)(nil)
+	_ Bind     = (*StdNetBind)(nil)
+	_ Endpoint = (*StdNetEndpoint)(nil)
+)
 
 func (*StdNetBind) ParseEndpoint(s string) (Endpoint, error) {
-	addr, err := parseEndpoint(s)
+	e, err := netip.ParseAddrPort(s)
-	return (*StdNetEndpoint)(addr), err
+	return (*StdNetEndpoint)(&net.UDPAddr{
+		IP:   e.Addr().AsSlice(),
+		Port: int(e.Port()),
+		Zone: e.Addr().Zone(),
+	}), err
 }
 
 func (*StdNetEndpoint) ClearSrc() {}
 
-func (e *StdNetEndpoint) DstIP() net.IP {
+func (e *StdNetEndpoint) DstIP() netip.Addr {
-	return (*net.UDPAddr)(e).IP
+	a, _ := netip.AddrFromSlice((*net.UDPAddr)(e).IP)
+	return a
 }
 
-func (e *StdNetEndpoint) SrcIP() net.IP {
+func (e *StdNetEndpoint) SrcIP() netip.Addr {
-	return nil // not supported
+	return netip.Addr{} // not supported
 }
 
 func (e *StdNetEndpoint) DstToBytes() []byte {

conn/bind_windows.go

@@ -9,6 +9,7 @@ import (
 	"encoding/binary"
 	"io"
 	"net"
+	"net/netip"
 	"strconv"
 	"sync"
 	"sync/atomic"
@@ -90,8 +91,10 @@ type WinRingEndpoint struct {
 	data   [30]byte
 }
 
-var _ Bind = (*WinRingBind)(nil)
+var (
-var _ Endpoint = (*WinRingEndpoint)(nil)
+	_ Bind     = (*WinRingBind)(nil)
+	_ Endpoint = (*WinRingEndpoint)(nil)
+)
 
 func (*WinRingBind) ParseEndpoint(s string) (Endpoint, error) {
 	host, port, err := net.SplitHostPort(s)
@@ -128,18 +131,18 @@ func (*WinRingBind) ParseEndpoint(s string) (Endpoint, error) {
 
 func (*WinRingEndpoint) ClearSrc() {}
 
-func (e *WinRingEndpoint) DstIP() net.IP {
+func (e *WinRingEndpoint) DstIP() netip.Addr {
 	switch e.family {
 	case windows.AF_INET:
-		return append([]byte{}, e.data[2:6]...)
+		return netip.AddrFrom4(*(*[4]byte)(e.data[2:6]))
 	case windows.AF_INET6:
-		return append([]byte{}, e.data[6:22]...)
+		return netip.AddrFrom16(*(*[16]byte)(e.data[6:22]))
 	}
-	return nil
+	return netip.Addr{}
 }
 
-func (e *WinRingEndpoint) SrcIP() net.IP {
+func (e *WinRingEndpoint) SrcIP() netip.Addr {
-	return nil // not supported
+	return netip.Addr{} // not supported
 }
 
 func (e *WinRingEndpoint) DstToBytes() []byte {
@@ -161,15 +164,13 @@ func (e *WinRingEndpoint) DstToBytes() []byte {
 func (e *WinRingEndpoint) DstToString() string {
 	switch e.family {
 	case windows.AF_INET:
-		addr := net.UDPAddr{IP: e.data[2:6], Port: int(binary.BigEndian.Uint16(e.data[0:2]))}
+		netip.AddrPortFrom(netip.AddrFrom4(*(*[4]byte)(e.data[2:6])), binary.BigEndian.Uint16(e.data[0:2])).String()
-		return addr.String()
 	case windows.AF_INET6:
 		var zone string
 		if scope := *(*uint32)(unsafe.Pointer(&e.data[22])); scope > 0 {
 			zone = strconv.FormatUint(uint64(scope), 10)
 		}
-		addr := net.UDPAddr{IP: e.data[6:22], Zone: zone, Port: int(binary.BigEndian.Uint16(e.data[0:2]))}
+		return netip.AddrPortFrom(netip.AddrFrom16(*(*[16]byte)(e.data[6:22])).WithZone(zone), binary.BigEndian.Uint16(e.data[0:2])).String()
-		return addr.String()
 	}
 	return ""
 }
@@ -383,7 +384,6 @@ retry:
 		count = winrio.DequeueCompletion(bind.rx.cq, results[:])
 		if count == 0 {
 			return 0, nil, io.ErrNoProgress
-
 		}
 	}
 	bind.rx.Return(1)
@@ -534,6 +534,7 @@ func (bind *StdNetBind) BindSocketToInterface6(interfaceIndex uint32, blackhole
 	bind.blackhole6 = blackhole
 	return nil
 }
+
 func (bind *WinRingBind) BindSocketToInterface4(interfaceIndex uint32, blackhole bool) error {
 	bind.mu.RLock()
 	defer bind.mu.RUnlock()

conn/bindtest/bindtest.go

@@ -9,8 +9,8 @@ import (
 	"fmt"
 	"math/rand"
 	"net"
+	"net/netip"
 	"os"
-	"strconv"
 
 	"golang.zx2c4.com/wireguard/conn"
 )
@@ -25,8 +25,10 @@ type ChannelBind struct {
 
 type ChannelEndpoint uint16
 
-var _ conn.Bind = (*ChannelBind)(nil)
+var (
-var _ conn.Endpoint = (*ChannelEndpoint)(nil)
+	_ conn.Bind     = (*ChannelBind)(nil)
+	_ conn.Endpoint = (*ChannelEndpoint)(nil)
+)
 
 func NewChannelBinds() [2]conn.Bind {
 	arx4 := make(chan []byte, 8192)
@@ -61,9 +63,9 @@ func (c ChannelEndpoint) DstToString() string { return fmt.Sprintf("127.0.0.1:%d
 
 func (c ChannelEndpoint) DstToBytes() []byte { return []byte{byte(c)} }
 
-func (c ChannelEndpoint) DstIP() net.IP { return net.IPv4(127, 0, 0, 1) }
+func (c ChannelEndpoint) DstIP() netip.Addr { return netip.AddrFrom4([4]byte{127, 0, 0, 1}) }
 
-func (c ChannelEndpoint) SrcIP() net.IP { return nil }
+func (c ChannelEndpoint) SrcIP() netip.Addr { return netip.Addr{} }
 
 func (c *ChannelBind) Open(port uint16) (fns []conn.ReceiveFunc, actualPort uint16, err error) {
 	c.closeSignal = make(chan bool)
@@ -119,13 +121,9 @@ func (c *ChannelBind) Send(b []byte, ep conn.Endpoint) error {
 }
 
 func (c *ChannelBind) ParseEndpoint(s string) (conn.Endpoint, error) {
-	_, port, err := net.SplitHostPort(s)
+	addr, err := netip.ParseAddrPort(s)
 	if err != nil {
 		return nil, err
 	}
-	i, err := strconv.ParseUint(port, 10, 16)
+	return ChannelEndpoint(addr.Port()), nil
-	if err != nil {
-		return nil, err
-	}
-	return ChannelEndpoint(i), nil
 }

conn/conn.go

@@ -9,7 +9,7 @@ package conn
 import (
 	"errors"
 	"fmt"
-	"net"
+	"net/netip"
 	"reflect"
 	"runtime"
 	"strings"
@@ -68,8 +68,8 @@ type Endpoint interface {
 	SrcToString() string // returns the local source address (ip:port)
 	DstToString() string // returns the destination address (ip:port)
 	DstToBytes() []byte  // used for mac2 cookie calculations
-	DstIP() net.IP
+	DstIP() netip.Addr
-	SrcIP() net.IP
+	SrcIP() netip.Addr
 }
 
 var (
@@ -119,33 +119,3 @@ func (fn ReceiveFunc) PrettyName() string {
 	}
 	return name
 }
-
-func parseEndpoint(s string) (*net.UDPAddr, error) {
-	// ensure that the host is an IP address
-
-	host, _, err := net.SplitHostPort(s)
-	if err != nil {
-		return nil, err
-	}
-	if i := strings.LastIndexByte(host, '%'); i > 0 && strings.IndexByte(host, ':') >= 0 {
-		// Remove the scope, if any. ResolveUDPAddr below will use it, but here we're just
-		// trying to make sure with a small sanity test that this is a real IP address and
-		// not something that's likely to incur DNS lookups.
-		host = host[:i]
-	}
-	if ip := net.ParseIP(host); ip == nil {
-		return nil, errors.New("Failed to parse IP address: " + host)
-	}
-
-	// parse address and port
-
-	addr, err := net.ResolveUDPAddr("udp", s)
-	if err != nil {
-		return nil, err
-	}
-	ip4 := addr.IP.To4()
-	if ip4 != nil {
-		addr.IP = ip4
-	}
-	return addr, err
-}

conn/winrio/rio_windows.go

@@ -84,8 +84,10 @@ type iocpNotificationCompletion struct {
 	overlapped     *windows.Overlapped
 }
 
-var initialized sync.Once
+var (
-var available bool
+	initialized sync.Once
+	available   bool
+)
 
 func Initialize() bool {
 	initialized.Do(func() {
@@ -108,7 +110,7 @@ func Initialize() bool {
 			return
 		}
 		defer windows.CloseHandle(socket)
-		var WSAID_MULTIPLE_RIO = &windows.GUID{0x8509e081, 0x96dd, 0x4005, [8]byte{0xb1, 0x65, 0x9e, 0x2e, 0xe8, 0xc7, 0x9e, 0x3f}}
+		WSAID_MULTIPLE_RIO := &windows.GUID{0x8509e081, 0x96dd, 0x4005, [8]byte{0xb1, 0x65, 0x9e, 0x2e, 0xe8, 0xc7, 0x9e, 0x3f}}
 		const SIO_GET_MULTIPLE_EXTENSION_FUNCTION_POINTER = 0xc8000024
 		ob := uint32(0)
 		err = windows.WSAIoctl(socket, SIO_GET_MULTIPLE_EXTENSION_FUNCTION_POINTER,

device/allowedips.go

@@ -7,9 +7,11 @@ package device
 
 import (
 	"container/list"
+	"encoding/binary"
 	"errors"
 	"math/bits"
 	"net"
+	"net/netip"
 	"sync"
 	"unsafe"
 )
@@ -26,49 +28,28 @@ type trieEntry struct {
 	cidr        uint8
 	bitAtByte   uint8
 	bitAtShift  uint8
-	bits        net.IP
+	bits        []byte
 	perPeerElem *list.Element
 }
 
-func isLittleEndian() bool {
+func commonBits(ip1, ip2 []byte) uint8 {
-	one := uint32(1)
-	return *(*byte)(unsafe.Pointer(&one)) != 0
-}
-
-func swapU32(i uint32) uint32 {
-	if !isLittleEndian() {
-		return i
-	}
-
-	return bits.ReverseBytes32(i)
-}
-
-func swapU64(i uint64) uint64 {
-	if !isLittleEndian() {
-		return i
-	}
-
-	return bits.ReverseBytes64(i)
-}
-
-func commonBits(ip1 net.IP, ip2 net.IP) uint8 {
 	size := len(ip1)
 	if size == net.IPv4len {
-		a := (*uint32)(unsafe.Pointer(&ip1[0]))
+		a := binary.BigEndian.Uint32(ip1)
-		b := (*uint32)(unsafe.Pointer(&ip2[0]))
+		b := binary.BigEndian.Uint32(ip2)
-		x := *a ^ *b
+		x := a ^ b
-		return uint8(bits.LeadingZeros32(swapU32(x)))
+		return uint8(bits.LeadingZeros32(x))
 	} else if size == net.IPv6len {
-		a := (*uint64)(unsafe.Pointer(&ip1[0]))
+		a := binary.BigEndian.Uint64(ip1)
-		b := (*uint64)(unsafe.Pointer(&ip2[0]))
+		b := binary.BigEndian.Uint64(ip2)
-		x := *a ^ *b
+		x := a ^ b
 		if x != 0 {
-			return uint8(bits.LeadingZeros64(swapU64(x)))
+			return uint8(bits.LeadingZeros64(x))
 		}
-		a = (*uint64)(unsafe.Pointer(&ip1[8]))
+		a = binary.BigEndian.Uint64(ip1[8:])
-		b = (*uint64)(unsafe.Pointer(&ip2[8]))
+		b = binary.BigEndian.Uint64(ip2[8:])
-		x = *a ^ *b
+		x = a ^ b
-		return 64 + uint8(bits.LeadingZeros64(swapU64(x)))
+		return 64 + uint8(bits.LeadingZeros64(x))
 	} else {
 		panic("Wrong size bit string")
 	}
@@ -85,7 +66,7 @@ func (node *trieEntry) removeFromPeerEntries() {
 	}
 }
 
-func (node *trieEntry) choose(ip net.IP) byte {
+func (node *trieEntry) choose(ip []byte) byte {
 	return (ip[node.bitAtByte] >> node.bitAtShift) & 1
 }
 
@@ -104,7 +85,7 @@ func (node *trieEntry) zeroizePointers() {
 	node.parent.parentBit = nil
 }
 
-func (node *trieEntry) nodePlacement(ip net.IP, cidr uint8) (parent *trieEntry, exact bool) {
+func (node *trieEntry) nodePlacement(ip []byte, cidr uint8) (parent *trieEntry, exact bool) {
 	for node != nil && node.cidr <= cidr && commonBits(node.bits, ip) >= node.cidr {
 		parent = node
 		if parent.cidr == cidr {
@@ -117,7 +98,7 @@ func (node *trieEntry) nodePlacement(ip net.IP, cidr uint8) (parent *trieEntry,
 	return
 }
 
-func (trie parentIndirection) insert(ip net.IP, cidr uint8, peer *Peer) {
+func (trie parentIndirection) insert(ip []byte, cidr uint8, peer *Peer) {
 	if *trie.parentBit == nil {
 		node := &trieEntry{
 			peer:       peer,
@@ -207,7 +188,7 @@ func (trie parentIndirection) insert(ip net.IP, cidr uint8, peer *Peer) {
 	}
 }
 
-func (node *trieEntry) lookup(ip net.IP) *Peer {
+func (node *trieEntry) lookup(ip []byte) *Peer {
 	var found *Peer
 	size := uint8(len(ip))
 	for node != nil && commonBits(node.bits, ip) >= node.cidr {
@@ -229,13 +210,14 @@ type AllowedIPs struct {
 	mutex sync.RWMutex
 }
 
-func (table *AllowedIPs) EntriesForPeer(peer *Peer, cb func(ip net.IP, cidr uint8) bool) {
+func (table *AllowedIPs) EntriesForPeer(peer *Peer, cb func(prefix netip.Prefix) bool) {
 	table.mutex.RLock()
 	defer table.mutex.RUnlock()
 
 	for elem := peer.trieEntries.Front(); elem != nil; elem = elem.Next() {
 		node := elem.Value.(*trieEntry)
-		if !cb(node.bits, node.cidr) {
+		a, _ := netip.AddrFromSlice(node.bits)
+		if !cb(netip.PrefixFrom(a, int(node.cidr))) {
 			return
 		}
 	}
@@ -283,28 +265,29 @@ func (table *AllowedIPs) RemoveByPeer(peer *Peer) {
 	}
 }
 
-func (table *AllowedIPs) Insert(ip net.IP, cidr uint8, peer *Peer) {
+func (table *AllowedIPs) Insert(prefix netip.Prefix, peer *Peer) {
 	table.mutex.Lock()
 	defer table.mutex.Unlock()
 
-	switch len(ip) {
+	if prefix.Addr().Is6() {
-	case net.IPv6len:
+		ip := prefix.Addr().As16()
-		parentIndirection{&table.IPv6, 2}.insert(ip, cidr, peer)
+		parentIndirection{&table.IPv6, 2}.insert(ip[:], uint8(prefix.Bits()), peer)
-	case net.IPv4len:
+	} else if prefix.Addr().Is4() {
-		parentIndirection{&table.IPv4, 2}.insert(ip, cidr, peer)
+		ip := prefix.Addr().As4()
-	default:
+		parentIndirection{&table.IPv4, 2}.insert(ip[:], uint8(prefix.Bits()), peer)
+	} else {
 		panic(errors.New("inserting unknown address type"))
 	}
 }
 
-func (table *AllowedIPs) Lookup(address []byte) *Peer {
+func (table *AllowedIPs) Lookup(ip []byte) *Peer {
 	table.mutex.RLock()
 	defer table.mutex.RUnlock()
-	switch len(address) {
+	switch len(ip) {
 	case net.IPv6len:
-		return table.IPv6.lookup(address)
+		return table.IPv6.lookup(ip)
 	case net.IPv4len:
-		return table.IPv4.lookup(address)
+		return table.IPv4.lookup(ip)
 	default:
 		panic(errors.New("looking up unknown address type"))
 	}

device/allowedips_rand_test.go

@@ -8,6 +8,7 @@ package device
 import (
 	"math/rand"
 	"net"
+	"net/netip"
 	"sort"
 	"testing"
 )
@@ -93,14 +94,14 @@ func TestTrieRandom(t *testing.T) {
 		rand.Read(addr4[:])
 		cidr := uint8(rand.Intn(32) + 1)
 		index := rand.Intn(NumberOfPeers)
-		allowedIPs.Insert(addr4[:], cidr, peers[index])
+		allowedIPs.Insert(netip.PrefixFrom(netip.AddrFrom4(addr4), int(cidr)), peers[index])
 		slow4 = slow4.Insert(addr4[:], cidr, peers[index])
 
 		var addr6 [16]byte
 		rand.Read(addr6[:])
 		cidr = uint8(rand.Intn(128) + 1)
 		index = rand.Intn(NumberOfPeers)
-		allowedIPs.Insert(addr6[:], cidr, peers[index])
+		allowedIPs.Insert(netip.PrefixFrom(netip.AddrFrom16(addr6), int(cidr)), peers[index])
 		slow6 = slow6.Insert(addr6[:], cidr, peers[index])
 	}
 

device/allowedips_test.go

@@ -8,6 +8,7 @@ package device
 import (
 	"math/rand"
 	"net"
+	"net/netip"
 	"testing"
 )
 
@@ -18,7 +19,6 @@ type testPairCommonBits struct {
 }
 
 func TestCommonBits(t *testing.T) {
-
 	tests := []testPairCommonBits{
 		{s1: []byte{1, 4, 53, 128}, s2: []byte{0, 0, 0, 0}, match: 7},
 		{s1: []byte{0, 4, 53, 128}, s2: []byte{0, 0, 0, 0}, match: 13},
@@ -39,7 +39,7 @@ func TestCommonBits(t *testing.T) {
 	}
 }
 
-func benchmarkTrie(peerNumber int, addressNumber int, addressLength int, b *testing.B) {
+func benchmarkTrie(peerNumber, addressNumber, addressLength int, b *testing.B) {
 	var trie *trieEntry
 	var peers []*Peer
 	root := parentIndirection{&trie, 2}
@@ -98,7 +98,7 @@ func TestTrieIPv4(t *testing.T) {
 	var allowedIPs AllowedIPs
 
 	insert := func(peer *Peer, a, b, c, d byte, cidr uint8) {
-		allowedIPs.Insert([]byte{a, b, c, d}, cidr, peer)
+		allowedIPs.Insert(netip.PrefixFrom(netip.AddrFrom4([4]byte{a, b, c, d}), int(cidr)), peer)
 	}
 
 	assertEQ := func(peer *Peer, a, b, c, d byte) {
@@ -208,7 +208,7 @@ func TestTrieIPv6(t *testing.T) {
 		addr = append(addr, expand(b)...)
 		addr = append(addr, expand(c)...)
 		addr = append(addr, expand(d)...)
-		allowedIPs.Insert(addr, cidr, peer)
+		allowedIPs.Insert(netip.PrefixFrom(netip.AddrFrom16(*(*[16]byte)(addr)), int(cidr)), peer)
 	}
 
 	assertEQ := func(peer *Peer, a, b, c, d uint32) {

device/cookie.go

@@ -83,7 +83,7 @@ func (st *CookieChecker) CheckMAC1(msg []byte) bool {
 	return hmac.Equal(mac1[:], msg[smac1:smac2])
 }
 
-func (st *CookieChecker) CheckMAC2(msg []byte, src []byte) bool {
+func (st *CookieChecker) CheckMAC2(msg, src []byte) bool {
 	st.RLock()
 	defer st.RUnlock()
 
@@ -119,7 +119,6 @@ func (st *CookieChecker) CreateReply(
 	recv uint32,
 	src []byte,
 ) (*MessageCookieReply, error) {
-
 	st.RLock()
 
 	// refresh cookie secret
@@ -204,7 +203,6 @@ func (st *CookieGenerator) ConsumeReply(msg *MessageCookieReply) bool {
 
 	xchapoly, _ := chacha20poly1305.NewX(st.mac2.encryptionKey[:])
 	_, err := xchapoly.Open(cookie[:0], msg.Nonce[:], msg.Cookie[:], st.mac2.lastMAC1[:])
-
 	if err != nil {
 		return false
 	}
@@ -215,7 +213,6 @@ func (st *CookieGenerator) ConsumeReply(msg *MessageCookieReply) bool {
 }
 
 func (st *CookieGenerator) AddMacs(msg []byte) {
-
 	size := len(msg)
 
 	smac2 := size - blake2s.Size128

device/cookie_test.go

@@ -10,7 +10,6 @@ import (
 )
 
 func TestCookieMAC1(t *testing.T) {
-
 	// setup generator / checker
 
 	var (
@@ -132,12 +131,12 @@ func TestCookieMAC1(t *testing.T) {
 
 		msg[5] ^= 0x20
 
-		srcBad1 := []byte{192, 168, 13, 37, 40, 01}
+		srcBad1 := []byte{192, 168, 13, 37, 40, 1}
 		if checker.CheckMAC2(msg, srcBad1) {
 			t.Fatal("MAC2 generation/verification failed")
 		}
 
-		srcBad2 := []byte{192, 168, 13, 38, 40, 01}
+		srcBad2 := []byte{192, 168, 13, 38, 40, 1}
 		if checker.CheckMAC2(msg, srcBad2) {
 			t.Fatal("MAC2 generation/verification failed")
 		}

device/device.go

@@ -44,6 +44,7 @@ type Device struct {
 		netlinkCancel *rwcancel.RWCancel
 		port          uint16 // listening port
 		fwmark        uint32 // mark value (0 = disabled)
+		brokenRoaming bool
 	}
 
 	staticIdentity struct {
@@ -52,16 +53,17 @@ type Device struct {
 		publicKey  NoisePublicKey
 	}
 
-	rate struct {
-		underLoadUntil int64
-		limiter        ratelimiter.Ratelimiter
-	}
-
 	peers struct {
 		sync.RWMutex // protects keyMap
 		keyMap       map[NoisePublicKey]*Peer
 	}
 
+	// Keep this 8-byte aligned
+	rate struct {
+		underLoadUntil int64
+		limiter        ratelimiter.Ratelimiter
+	}
+
 	allowedips    AllowedIPs
 	indexTable    IndexTable
 	cookieChecker CookieChecker
@@ -172,6 +174,11 @@ func (device *Device) upLocked() error {
 		return err
 	}
 
+	// The IPC set operation waits for peers to be created before calling Start() on them,
+	// so if there's a concurrent IPC set request happening, we should wait for it to complete.
+	device.ipcMutex.Lock()
+	defer device.ipcMutex.Unlock()
+
 	device.peers.RLock()
 	for _, peer := range device.peers.keyMap {
 		peer.Start()

device/device_test.go

@@ -11,7 +11,7 @@ import (
 	"fmt"
 	"io"
 	"math/rand"
-	"net"
+	"net/netip"
 	"runtime"
 	"runtime/pprof"
 	"sync"
@@ -48,7 +48,7 @@ func uapiCfg(cfg ...string) string {
 
 // genConfigs generates a pair of configs that connect to each other.
 // The configs use distinct, probably-usable ports.
-func genConfigs(tb testing.TB) (cfgs [2]string, endpointCfgs [2]string) {
+func genConfigs(tb testing.TB) (cfgs, endpointCfgs [2]string) {
 	var key1, key2 NoisePrivateKey
 	_, err := rand.Read(key1[:])
 	if err != nil {
@@ -96,7 +96,7 @@ type testPair [2]testPeer
 type testPeer struct {
 	tun *tuntest.ChannelTUN
 	dev *Device
-	ip  net.IP
+	ip  netip.Addr
 }
 
 type SendDirection bool
@@ -159,7 +159,7 @@ func genTestPair(tb testing.TB, realSocket bool) (pair testPair) {
 	for i := range pair {
 		p := &pair[i]
 		p.tun = tuntest.NewChannelTUN()
-		p.ip = net.IPv4(1, 0, 0, byte(i+1))
+		p.ip = netip.AddrFrom4([4]byte{1, 0, 0, byte(i + 1)})
 		level := LogLevelVerbose
 		if _, ok := tb.(*testing.B); ok && !testing.Verbose() {
 			level = LogLevelError

device/endpoint_test.go

@@ -7,47 +7,43 @@ package device
 
 import (
 	"math/rand"
-	"net"
+	"net/netip"
 )
 
 type DummyEndpoint struct {
-	src [16]byte
+	src, dst netip.Addr
-	dst [16]byte
 }
 
 func CreateDummyEndpoint() (*DummyEndpoint, error) {
-	var end DummyEndpoint
+	var src, dst [16]byte
-	if _, err := rand.Read(end.src[:]); err != nil {
+	if _, err := rand.Read(src[:]); err != nil {
 		return nil, err
 	}
-	_, err := rand.Read(end.dst[:])
+	_, err := rand.Read(dst[:])
-	return &end, err
+	return &DummyEndpoint{netip.AddrFrom16(src), netip.AddrFrom16(dst)}, err
 }
 
 func (e *DummyEndpoint) ClearSrc() {}
 
 func (e *DummyEndpoint) SrcToString() string {
-	var addr net.UDPAddr
+	return netip.AddrPortFrom(e.SrcIP(), 1000).String()
-	addr.IP = e.SrcIP()
-	addr.Port = 1000
-	return addr.String()
 }
 
 func (e *DummyEndpoint) DstToString() string {
-	var addr net.UDPAddr
+	return netip.AddrPortFrom(e.DstIP(), 1000).String()
-	addr.IP = e.DstIP()
-	addr.Port = 1000
-	return addr.String()
 }
 
-func (e *DummyEndpoint) SrcToBytes() []byte {
+func (e *DummyEndpoint) DstToBytes() []byte {
-	return e.src[:]
+	out := e.DstIP().AsSlice()
+	out = append(out, byte(1000&0xff))
+	out = append(out, byte((1000>>8)&0xff))
+	return out
 }
 
-func (e *DummyEndpoint) DstIP() net.IP {
+func (e *DummyEndpoint) DstIP() netip.Addr {
-	return e.dst[:]
+	return e.dst
 }
 
-func (e *DummyEndpoint) SrcIP() net.IP {
+func (e *DummyEndpoint) SrcIP() netip.Addr {
-	return e.src[:]
+	return e.src
 }

device/kdf_test.go

@@ -20,7 +20,7 @@ type KDFTest struct {
 	t2    string
 }
 
-func assertEquals(t *testing.T, a string, b string) {
+func assertEquals(t *testing.T, a, b string) {
 	if a != b {
 		t.Fatal("expected", a, "=", b)
 	}

device/logger.go

@@ -16,8 +16,8 @@ import (
 // They do not require a trailing newline in the format.
 // If nil, that level of logging will be silent.
 type Logger struct {
-	Verbosef func(format string, args ...interface{})
+	Verbosef func(format string, args ...any)
-	Errorf   func(format string, args ...interface{})
+	Errorf   func(format string, args ...any)
 }
 
 // Log levels for use with NewLogger.
@@ -28,14 +28,14 @@ const (
 )
 
 // Function for use in Logger for discarding logged lines.
-func DiscardLogf(format string, args ...interface{}) {}
+func DiscardLogf(format string, args ...any) {}
 
 // NewLogger constructs a Logger that writes to stdout.
 // It logs at the specified log level and above.
 // It decorates log lines with the log level, date, time, and prepend.
 func NewLogger(level int, prepend string) *Logger {
 	logger := &Logger{DiscardLogf, DiscardLogf}
-	logf := func(prefix string) func(string, ...interface{}) {
+	logf := func(prefix string) func(string, ...any) {
 		return log.New(os.Stdout, prefix+": "+prepend, log.Ldate|log.Ltime).Printf
 	}
 	if level >= LogLevelVerbose {

device/mobilequirks.go

@@ -5,7 +5,10 @@
 
 package device
 
+// DisableSomeRoamingForBrokenMobileSemantics should ideally be called before peers are created,
+// though it will try to deal with it, and race maybe, if called after.
 func (device *Device) DisableSomeRoamingForBrokenMobileSemantics() {
+	device.net.brokenRoaming = true
 	device.peers.RLock()
 	for _, peer := range device.peers.keyMap {
 		peer.Lock()

device/noise-protocol.go

@@ -138,11 +138,11 @@ var (
 	ZeroNonce       [chacha20poly1305.NonceSize]byte
 )
 
-func mixKey(dst *[blake2s.Size]byte, c *[blake2s.Size]byte, data []byte) {
+func mixKey(dst, c *[blake2s.Size]byte, data []byte) {
 	KDF1(dst, c[:], data)
 }
 
-func mixHash(dst *[blake2s.Size]byte, h *[blake2s.Size]byte, data []byte) {
+func mixHash(dst, h *[blake2s.Size]byte, data []byte) {
 	hash, _ := blake2s.New256(nil)
 	hash.Write(h[:])
 	hash.Write(data)
@@ -175,7 +175,7 @@ func init() {
 }
 
 func (device *Device) CreateMessageInitiation(peer *Peer) (*MessageInitiation, error) {
-	var errZeroECDHResult = errors.New("ECDH returned all zeros")
+	errZeroECDHResult := errors.New("ECDH returned all zeros")
 
 	device.staticIdentity.RLock()
 	defer device.staticIdentity.RUnlock()
@@ -282,7 +282,7 @@ func (device *Device) ConsumeMessageInitiation(msg *MessageInitiation) *Peer {
 	// lookup peer
 
 	peer := device.LookupPeer(peerPK)
-	if peer == nil {
+	if peer == nil || !peer.isRunning.Get() {
 		return nil
 	}
 
@@ -436,7 +436,6 @@ func (device *Device) ConsumeMessageResponse(msg *MessageResponse) *Peer {
 	)
 
 	ok := func() bool {
-
 		// lock handshake state
 
 		handshake.mutex.RLock()

device/noise_test.go

@@ -71,6 +71,8 @@ func TestNoiseHandshake(t *testing.T) {
 	if err != nil {
 		t.Fatal(err)
 	}
+	peer1.Start()
+	peer2.Start()
 
 	assertEqual(
 		t,

device/peer.go

@@ -107,15 +107,12 @@ func (device *Device) NewPeer(pk NoisePublicKey) (*Peer, error) {
 	// reset endpoint
 	peer.endpoint = nil
 
+	// init timers
+	peer.timersInit()
+
 	// add
 	device.peers.keyMap[pk] = peer
 
-	// start peer
-	peer.timersInit()
-	if peer.device.isUp() {
-		peer.Start()
-	}
-
 	return peer, nil
 }
 

device/pools.go

@@ -18,13 +18,13 @@ type WaitPool struct {
 	max   uint32
 }
 
-func NewWaitPool(max uint32, new func() interface{}) *WaitPool {
+func NewWaitPool(max uint32, new func() any) *WaitPool {
 	p := &WaitPool{pool: sync.Pool{New: new}, max: max}
 	p.cond = sync.Cond{L: &p.lock}
 	return p
 }
 
-func (p *WaitPool) Get() interface{} {
+func (p *WaitPool) Get() any {
 	if p.max != 0 {
 		p.lock.Lock()
 		for atomic.LoadUint32(&p.count) >= p.max {
@@ -36,7 +36,7 @@ func (p *WaitPool) Get() interface{} {
 	return p.pool.Get()
 }
 
-func (p *WaitPool) Put(x interface{}) {
+func (p *WaitPool) Put(x any) {
 	p.pool.Put(x)
 	if p.max == 0 {
 		return
@@ -46,13 +46,13 @@ func (p *WaitPool) Put(x interface{}) {
 }
 
 func (device *Device) PopulatePools() {
-	device.pool.messageBuffers = NewWaitPool(PreallocatedBuffersPerPool, func() interface{} {
+	device.pool.messageBuffers = NewWaitPool(PreallocatedBuffersPerPool, func() any {
 		return new([MaxMessageSize]byte)
 	})
-	device.pool.inboundElements = NewWaitPool(PreallocatedBuffersPerPool, func() interface{} {
+	device.pool.inboundElements = NewWaitPool(PreallocatedBuffersPerPool, func() any {
 		return new(QueueInboundElement)
 	})
-	device.pool.outboundElements = NewWaitPool(PreallocatedBuffersPerPool, func() interface{} {
+	device.pool.outboundElements = NewWaitPool(PreallocatedBuffersPerPool, func() any {
 		return new(QueueOutboundElement)
 	})
 }

device/pools_test.go

@@ -26,7 +26,7 @@ func TestWaitPool(t *testing.T) {
 	if workers-4 <= 0 {
 		t.Skip("Not enough cores")
 	}
-	p := NewWaitPool(uint32(workers-4), func() interface{} { return make([]byte, 16) })
+	p := NewWaitPool(uint32(workers-4), func() any { return make([]byte, 16) })
 	wg.Add(workers)
 	max := uint32(0)
 	updateMax := func() {
@@ -71,7 +71,7 @@ func BenchmarkWaitPool(b *testing.B) {
 	if workers-4 <= 0 {
 		b.Skip("Not enough cores")
 	}
-	p := NewWaitPool(uint32(workers-4), func() interface{} { return make([]byte, 16) })
+	p := NewWaitPool(uint32(workers-4), func() any { return make([]byte, 16) })
 	wg.Add(workers)
 	b.ResetTimer()
 	for i := 0; i < workers; i++ {

device/receive.go

@@ -17,7 +17,6 @@ import (
 	"golang.org/x/crypto/chacha20poly1305"
 	"golang.org/x/net/ipv4"
 	"golang.org/x/net/ipv6"
-
 	"golang.zx2c4.com/wireguard/conn"
 )
 

device/send.go

@@ -226,7 +226,6 @@ func (device *Device) RoutineReadFromTUN() {
 
 		offset := MessageTransportHeaderSize
 		size, err := device.tun.device.Read(elem.buffer[:], offset)
-
 		if err != nil {
 			if !device.isClosed() {
 				if !errors.Is(err, os.ErrClosed) {

device/timers.go

@@ -8,12 +8,15 @@
 package device
 
 import (
-	"math/rand"
 	"sync"
 	"sync/atomic"
 	"time"
+	_ "unsafe"
 )
 
+//go:linkname fastrandn runtime.fastrandn
+func fastrandn(n uint32) uint32
+
 // A Timer manages time-based aspects of the WireGuard protocol.
 // Timer roughly copies the interface of the Linux kernel's struct timer_list.
 type Timer struct {
@@ -127,7 +130,6 @@ func expiredNewHandshake(peer *Peer) {
 	}
 	peer.Unlock()
 	peer.SendHandshakeInitiation(false)
-
 }
 
 func expiredZeroKeyMaterial(peer *Peer) {
@@ -144,7 +146,7 @@ func expiredPersistentKeepalive(peer *Peer) {
 /* Should be called after an authenticated data packet is sent. */
 func (peer *Peer) timersDataSent() {
 	if peer.timersActive() && !peer.timers.newHandshake.IsPending() {
-		peer.timers.newHandshake.Mod(KeepaliveTimeout + RekeyTimeout + time.Millisecond*time.Duration(rand.Int31n(RekeyTimeoutJitterMaxMs)))
+		peer.timers.newHandshake.Mod(KeepaliveTimeout + RekeyTimeout + time.Millisecond*time.Duration(fastrandn(RekeyTimeoutJitterMaxMs)))
 	}
 }
 
@@ -176,7 +178,7 @@ func (peer *Peer) timersAnyAuthenticatedPacketReceived() {
 /* Should be called after a handshake initiation message is sent. */
 func (peer *Peer) timersHandshakeInitiated() {
 	if peer.timersActive() {
-		peer.timers.retransmitHandshake.Mod(RekeyTimeout + time.Millisecond*time.Duration(rand.Int31n(RekeyTimeoutJitterMaxMs)))
+		peer.timers.retransmitHandshake.Mod(RekeyTimeout + time.Millisecond*time.Duration(fastrandn(RekeyTimeoutJitterMaxMs)))
 	}
 }
 

device/uapi.go

@@ -12,6 +12,7 @@ import (
 	"fmt"
 	"io"
 	"net"
+	"net/netip"
 	"strconv"
 	"strings"
 	"sync"
@@ -38,12 +39,12 @@ func (s IPCError) ErrorCode() int64 {
 	return s.code
 }
 
-func ipcErrorf(code int64, msg string, args ...interface{}) *IPCError {
+func ipcErrorf(code int64, msg string, args ...any) *IPCError {
 	return &IPCError{code: code, err: fmt.Errorf(msg, args...)}
 }
 
 var byteBufferPool = &sync.Pool{
-	New: func() interface{} { return new(bytes.Buffer) },
+	New: func() any { return new(bytes.Buffer) },
 }
 
 // IpcGetOperation implements the WireGuard configuration protocol "get" operation.
@@ -55,7 +56,7 @@ func (device *Device) IpcGetOperation(w io.Writer) error {
 	buf := byteBufferPool.Get().(*bytes.Buffer)
 	buf.Reset()
 	defer byteBufferPool.Put(buf)
-	sendf := func(format string, args ...interface{}) {
+	sendf := func(format string, args ...any) {
 		fmt.Fprintf(buf, format, args...)
 		buf.WriteByte('\n')
 	}
@@ -72,7 +73,6 @@ func (device *Device) IpcGetOperation(w io.Writer) error {
 	}
 
 	func() {
-
 		// lock required resources
 
 		device.net.RLock()
@@ -98,33 +98,35 @@ func (device *Device) IpcGetOperation(w io.Writer) error {
 			sendf("fwmark=%d", device.net.fwmark)
 		}
 
-		// serialize each peer state
-
 		for _, peer := range device.peers.keyMap {
-			peer.RLock()
+			// Serialize peer state.
-			defer peer.RUnlock()
+			// Do the work in an anonymous function so that we can use defer.
+			func() {
+				peer.RLock()
+				defer peer.RUnlock()
 
-			keyf("public_key", (*[32]byte)(&peer.handshake.remoteStatic))
+				keyf("public_key", (*[32]byte)(&peer.handshake.remoteStatic))
-			keyf("preshared_key", (*[32]byte)(&peer.handshake.presharedKey))
+				keyf("preshared_key", (*[32]byte)(&peer.handshake.presharedKey))
-			sendf("protocol_version=1")
+				sendf("protocol_version=1")
-			if peer.endpoint != nil {
+				if peer.endpoint != nil {
-				sendf("endpoint=%s", peer.endpoint.DstToString())
+					sendf("endpoint=%s", peer.endpoint.DstToString())
-			}
+				}
 
-			nano := atomic.LoadInt64(&peer.stats.lastHandshakeNano)
+				nano := atomic.LoadInt64(&peer.stats.lastHandshakeNano)
-			secs := nano / time.Second.Nanoseconds()
+				secs := nano / time.Second.Nanoseconds()
-			nano %= time.Second.Nanoseconds()
+				nano %= time.Second.Nanoseconds()
 
-			sendf("last_handshake_time_sec=%d", secs)
+				sendf("last_handshake_time_sec=%d", secs)
-			sendf("last_handshake_time_nsec=%d", nano)
+				sendf("last_handshake_time_nsec=%d", nano)
-			sendf("tx_bytes=%d", atomic.LoadUint64(&peer.stats.txBytes))
+				sendf("tx_bytes=%d", atomic.LoadUint64(&peer.stats.txBytes))
-			sendf("rx_bytes=%d", atomic.LoadUint64(&peer.stats.rxBytes))
+				sendf("rx_bytes=%d", atomic.LoadUint64(&peer.stats.rxBytes))
-			sendf("persistent_keepalive_interval=%d", atomic.LoadUint32(&peer.persistentKeepaliveInterval))
+				sendf("persistent_keepalive_interval=%d", atomic.LoadUint32(&peer.persistentKeepaliveInterval))
 
-			device.allowedips.EntriesForPeer(peer, func(ip net.IP, cidr uint8) bool {
+				device.allowedips.EntriesForPeer(peer, func(prefix netip.Prefix) bool {
-				sendf("allowed_ip=%s/%d", ip.String(), cidr)
+					sendf("allowed_ip=%s", prefix.String())
-				return true
+					return true
-			})
+				})
+			}()
 		}
 	}()
 
@@ -156,14 +158,13 @@ func (device *Device) IpcSetOperation(r io.Reader) (err error) {
 		line := scanner.Text()
 		if line == "" {
 			// Blank line means terminate operation.
+			peer.handlePostConfig()
 			return nil
 		}
-		parts := strings.Split(line, "=")
+		key, value, ok := strings.Cut(line, "=")
-		if len(parts) != 2 {
+		if !ok {
-			return ipcErrorf(ipc.IpcErrorProtocol, "failed to parse line %q, found %d =-separated parts, want 2", line, len(parts))
+			return ipcErrorf(ipc.IpcErrorProtocol, "failed to parse line %q", line)
 		}
-		key := parts[0]
-		value := parts[1]
 
 		if key == "public_key" {
 			if deviceConfig {
@@ -254,10 +255,21 @@ type ipcSetPeer struct {
 	*Peer        // Peer is the current peer being operated on
 	dummy   bool // dummy reports whether this peer is a temporary, placeholder peer
 	created bool // new reports whether this is a newly created peer
+	pkaOn   bool // pkaOn reports whether the peer had the persistent keepalive turn on
 }
 
 func (peer *ipcSetPeer) handlePostConfig() {
-	if peer.Peer != nil && !peer.dummy && peer.Peer.device.isUp() {
+	if peer.Peer == nil || peer.dummy {
+		return
+	}
+	if peer.created {
+		peer.disableRoaming = peer.device.net.brokenRoaming && peer.endpoint != nil
+	}
+	if peer.device.isUp() {
+		peer.Start()
+		if peer.pkaOn {
+			peer.SendKeepalive()
+		}
 		peer.SendStagedPackets()
 	}
 }
@@ -349,14 +361,7 @@ func (device *Device) handlePeerLine(peer *ipcSetPeer, key, value string) error
 		old := atomic.SwapUint32(&peer.persistentKeepaliveInterval, uint32(secs))
 
 		// Send immediate keepalive if we're turning it on and before it wasn't on.
-		if old == 0 && secs != 0 {
+		peer.pkaOn = old == 0 && secs != 0
-			if err != nil {
-				return ipcErrorf(ipc.IpcErrorIO, "failed to get tun device status: %w", err)
-			}
-			if device.isUp() && !peer.dummy {
-				peer.SendKeepalive()
-			}
-		}
 
 	case "replace_allowed_ips":
 		device.log.Verbosef("%v - UAPI: Removing all allowedips", peer.Peer)
@@ -370,16 +375,14 @@ func (device *Device) handlePeerLine(peer *ipcSetPeer, key, value string) error
 
 	case "allowed_ip":
 		device.log.Verbosef("%v - UAPI: Adding allowedip", peer.Peer)
-
+		prefix, err := netip.ParsePrefix(value)
-		_, network, err := net.ParseCIDR(value)
 		if err != nil {
 			return ipcErrorf(ipc.IpcErrorInvalid, "failed to set allowed ip: %w", err)
 		}
 		if peer.dummy {
 			return nil
 		}
-		ones, _ := network.Mask.Size()
+		device.allowedips.Insert(prefix, peer.Peer)
-		device.allowedips.Insert(network.IP, uint8(ones), peer.Peer)
 
 	case "protocol_version":
 		if value != "1" {

go.mod

@@ -1,9 +1,10 @@
 module golang.zx2c4.com/wireguard
 
-go 1.17
+go 1.18
 
 require (
-	golang.org/x/crypto v0.0.0-20210921155107-089bfa567519
+	golang.org/x/crypto v0.0.0-20220315160706-3147a52a75dd
-	golang.org/x/net v0.0.0-20210927181540-4e4d966f7476
+	golang.org/x/net v0.0.0-20220225172249-27dd8689420f
-	golang.org/x/sys v0.0.0-20210927094055-39ccf1dd6fa6
+	golang.org/x/sys v0.0.0-20220315194320-039c03cc5b86
+	golang.zx2c4.com/wintun v0.0.0-20211104114900-415007cec224
 )

go.sum

@@ -1,14 +1,8 @@
-golang.org/x/crypto v0.0.0-20210921155107-089bfa567519 h1:7I4JAnoQBe7ZtJcBaYHi5UtiO8tQHbUSXxL+pnGRANg=
+golang.org/x/crypto v0.0.0-20220315160706-3147a52a75dd h1:XcWmESyNjXJMLahc3mqVQJcgSTDxFxhETVlfk9uGc38=
-golang.org/x/crypto v0.0.0-20210921155107-089bfa567519/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
+golang.org/x/crypto v0.0.0-20220315160706-3147a52a75dd/go.mod h1:IxCIyHEi3zRg3s0A5j5BB6A9Jmi73HwBIUl50j+osU4=
-golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
+golang.org/x/net v0.0.0-20220225172249-27dd8689420f h1:oA4XRj0qtSt8Yo1Zms0CUlsT3KG69V2UGQWPBxujDmc=
-golang.org/x/net v0.0.0-20210927181540-4e4d966f7476 h1:s5hu7bTnLKswvidgtqc4GwsW83m9LZu8UAqzmWOZtI4=
+golang.org/x/net v0.0.0-20220225172249-27dd8689420f/go.mod h1:CfG3xpIq0wQ8r1q4Su4UZFWDARRcnwPjda9FqA0JpMk=
-golang.org/x/net v0.0.0-20210927181540-4e4d966f7476/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
+golang.org/x/sys v0.0.0-20220315194320-039c03cc5b86 h1:A9i04dxx7Cribqbs8jf3FQLogkL/CV2YN7hj9KWJCkc=
-golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20220315194320-039c03cc5b86/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.0.0-20210423082822-04245dca01da/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.zx2c4.com/wintun v0.0.0-20211104114900-415007cec224 h1:Ug9qvr1myri/zFN6xL17LSCBGFDnphBBhzmILHsM5TY=
-golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.zx2c4.com/wintun v0.0.0-20211104114900-415007cec224/go.mod h1:deeaetjYA+DHMHg+sMSMI58GrEteJUUzzw7en6TJQcI=
-golang.org/x/sys v0.0.0-20210927094055-39ccf1dd6fa6 h1:foEbQz/B0Oz6YIqu/69kfXPYeFQAuuMYFkjaqXzl5Wo=
-golang.org/x/sys v0.0.0-20210927094055-39ccf1dd6fa6/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
-golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
-golang.org/x/text v0.3.6/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
-golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=

ipc/namedpipe/file.go

@@ -1,12 +1,12 @@
+// Copyright 2021 The Go Authors. All rights reserved.
+// Copyright 2015 Microsoft
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
 //go:build windows
+// +build windows
 
-/* SPDX-License-Identifier: MIT
+package namedpipe
- *
- * Copyright (C) 2005 Microsoft
- * Copyright (C) 2017-2021 WireGuard LLC. All Rights Reserved.
- */
-
-package winpipe
 
 import (
 	"io"
@@ -22,8 +22,10 @@ import (
 
 type timeoutChan chan struct{}
 
-var ioInitOnce sync.Once
+var (
-var ioCompletionPort windows.Handle
+	ioInitOnce       sync.Once
+	ioCompletionPort windows.Handle
+)
 
 // ioResult contains the result of an asynchronous IO operation
 type ioResult struct {

ipc/namedpipe/namedpipe.go

@@ -1,13 +1,13 @@
+// Copyright 2021 The Go Authors. All rights reserved.
+// Copyright 2015 Microsoft
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
 //go:build windows
+// +build windows
 
-/* SPDX-License-Identifier: MIT
+// Package namedpipe implements a net.Conn and net.Listener around Windows named pipes.
- *
+package namedpipe
- * Copyright (C) 2005 Microsoft
- * Copyright (C) 2017-2021 WireGuard LLC. All Rights Reserved.
- */
-
-// Package winpipe implements a net.Conn and net.Listener around Windows named pipes.
-package winpipe
 
 import (
 	"context"
@@ -15,6 +15,7 @@ import (
 	"net"
 	"os"
 	"runtime"
+	"sync/atomic"
 	"time"
 	"unsafe"
 
@@ -28,7 +29,7 @@ type pipe struct {
 
 type messageBytePipe struct {
 	pipe
-	writeClosed bool
+	writeClosed int32
 	readEOF     bool
 }
 
@@ -50,25 +51,26 @@ func (f *pipe) SetDeadline(t time.Time) error {
 
 // CloseWrite closes the write side of a message pipe in byte mode.
 func (f *messageBytePipe) CloseWrite() error {
-	if f.writeClosed {
+	if !atomic.CompareAndSwapInt32(&f.writeClosed, 0, 1) {
 		return io.ErrClosedPipe
 	}
 	err := f.file.Flush()
 	if err != nil {
+		atomic.StoreInt32(&f.writeClosed, 0)
 		return err
 	}
 	_, err = f.file.Write(nil)
 	if err != nil {
+		atomic.StoreInt32(&f.writeClosed, 0)
 		return err
 	}
-	f.writeClosed = true
 	return nil
 }
 
 // Write writes bytes to a message pipe in byte mode. Zero-byte writes are ignored, since
 // they are used to implement CloseWrite.
 func (f *messageBytePipe) Write(b []byte) (int, error) {
-	if f.writeClosed {
+	if atomic.LoadInt32(&f.writeClosed) != 0 {
 		return 0, io.ErrClosedPipe
 	}
 	if len(b) == 0 {
@@ -142,30 +144,24 @@ type DialConfig struct {
 	ExpectedOwner *windows.SID // If non-nil, the pipe is verified to be owned by this SID.
 }
 
-// Dial connects to the specified named pipe by path, timing out if the connection
+// DialTimeout connects to the specified named pipe by path, timing out if the
-// takes longer than the specified duration. If timeout is nil, then we use
+// connection  takes longer than the specified duration. If timeout is zero, then
-// a default timeout of 2 seconds.
+// we use a default timeout of 2 seconds.
-func Dial(path string, timeout *time.Duration, config *DialConfig) (net.Conn, error) {
+func (config *DialConfig) DialTimeout(path string, timeout time.Duration) (net.Conn, error) {
-	var absTimeout time.Time
+	if timeout == 0 {
-	if timeout != nil {
+		timeout = time.Second * 2
-		absTimeout = time.Now().Add(*timeout)
-	} else {
-		absTimeout = time.Now().Add(2 * time.Second)
 	}
+	absTimeout := time.Now().Add(timeout)
 	ctx, _ := context.WithDeadline(context.Background(), absTimeout)
-	conn, err := DialContext(ctx, path, config)
+	conn, err := config.DialContext(ctx, path)
 	if err == context.DeadlineExceeded {
 		return nil, os.ErrDeadlineExceeded
 	}
 	return conn, err
 }
 
-// DialContext attempts to connect to the specified named pipe by path
+// DialContext attempts to connect to the specified named pipe by path.
-// cancellation or timeout.
+func (config *DialConfig) DialContext(ctx context.Context, path string) (net.Conn, error) {
-func DialContext(ctx context.Context, path string, config *DialConfig) (net.Conn, error) {
-	if config == nil {
-		config = &DialConfig{}
-	}
 	var err error
 	var h windows.Handle
 	h, err = tryDialPipe(ctx, &path)
@@ -213,6 +209,18 @@ func DialContext(ctx context.Context, path string, config *DialConfig) (net.Conn
 	return &pipe{file: f, path: path}, nil
 }
 
+var defaultDialer DialConfig
+
+// DialTimeout calls DialConfig.DialTimeout using an empty configuration.
+func DialTimeout(path string, timeout time.Duration) (net.Conn, error) {
+	return defaultDialer.DialTimeout(path, timeout)
+}
+
+// DialContext calls DialConfig.DialContext using an empty configuration.
+func DialContext(ctx context.Context, path string) (net.Conn, error) {
+	return defaultDialer.DialContext(ctx, path)
+}
+
 type acceptResponse struct {
 	f   *file
 	err error
@@ -222,12 +230,12 @@ type pipeListener struct {
 	firstHandle windows.Handle
 	path        string
 	config      ListenConfig
-	acceptCh    chan (chan acceptResponse)
+	acceptCh    chan chan acceptResponse
 	closeCh     chan int
 	doneCh      chan int
 }
 
-func makeServerPipeHandle(path string, sd *windows.SECURITY_DESCRIPTOR, c *ListenConfig, first bool) (windows.Handle, error) {
+func makeServerPipeHandle(path string, sd *windows.SECURITY_DESCRIPTOR, c *ListenConfig, isFirstPipe bool) (windows.Handle, error) {
 	path16, err := windows.UTF16PtrFromString(path)
 	if err != nil {
 		return 0, &os.PathError{Op: "open", Path: path, Err: err}
@@ -247,7 +255,7 @@ func makeServerPipeHandle(path string, sd *windows.SECURITY_DESCRIPTOR, c *Liste
 	oa.ObjectName = &ntPath
 
 	// The security descriptor is only needed for the first pipe.
-	if first {
+	if isFirstPipe {
 		if sd != nil {
 			oa.SecurityDescriptor = sd
 		} else {
@@ -257,7 +265,7 @@ func makeServerPipeHandle(path string, sd *windows.SECURITY_DESCRIPTOR, c *Liste
 				return 0, err
 			}
 			defer windows.LocalFree(windows.Handle(unsafe.Pointer(acl)))
-			sd, err := windows.NewSecurityDescriptor()
+			sd, err = windows.NewSecurityDescriptor()
 			if err != nil {
 				return 0, err
 			}
@@ -275,11 +283,11 @@ func makeServerPipeHandle(path string, sd *windows.SECURITY_DESCRIPTOR, c *Liste
 
 	disposition := uint32(windows.FILE_OPEN)
 	access := uint32(windows.GENERIC_READ | windows.GENERIC_WRITE | windows.SYNCHRONIZE)
-	if first {
+	if isFirstPipe {
 		disposition = windows.FILE_CREATE
 		// By not asking for read or write access, the named pipe file system
 		// will put this pipe into an initially disconnected state, blocking
-		// client connections until the next call with first == false.
+		// client connections until the next call with isFirstPipe == false.
 		access = windows.SYNCHRONIZE
 	}
 
@@ -395,10 +403,7 @@ type ListenConfig struct {
 
 // Listen creates a listener on a Windows named pipe path,such as \\.\pipe\mypipe.
 // The pipe must not already exist.
-func Listen(path string, c *ListenConfig) (net.Listener, error) {
+func (c *ListenConfig) Listen(path string) (net.Listener, error) {
-	if c == nil {
-		c = &ListenConfig{}
-	}
 	h, err := makeServerPipeHandle(path, c.SecurityDescriptor, c, true)
 	if err != nil {
 		return nil, err
@@ -407,12 +412,12 @@ func Listen(path string, c *ListenConfig) (net.Listener, error) {
 		firstHandle: h,
 		path:        path,
 		config:      *c,
-		acceptCh:    make(chan (chan acceptResponse)),
+		acceptCh:    make(chan chan acceptResponse),
 		closeCh:     make(chan int),
 		doneCh:      make(chan int),
 	}
 	// The first connection is swallowed on Windows 7 & 8, so synthesize it.
-	if maj, _, _ := windows.RtlGetNtVersionNumbers(); maj <= 8 {
+	if maj, min, _ := windows.RtlGetNtVersionNumbers(); maj < 6 || (maj == 6 && min < 4) {
 		path16, err := windows.UTF16PtrFromString(path)
 		if err == nil {
 			h, err = windows.CreateFile(path16, 0, 0, nil, windows.OPEN_EXISTING, windows.SECURITY_SQOS_PRESENT|windows.SECURITY_ANONYMOUS, 0)
@@ -425,6 +430,13 @@ func Listen(path string, c *ListenConfig) (net.Listener, error) {
 	return l, nil
 }
 
+var defaultListener ListenConfig
+
+// Listen calls ListenConfig.Listen using an empty configuration.
+func Listen(path string) (net.Listener, error) {
+	return defaultListener.Listen(path)
+}
+
 func connectPipe(p *file) error {
 	c, err := p.prepareIo()
 	if err != nil {

ipc/namedpipe/namedpipe_test.go

@@ -1,12 +1,12 @@
+// Copyright 2021 The Go Authors. All rights reserved.
+// Copyright 2015 Microsoft
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
 //go:build windows
+// +build windows
 
-/* SPDX-License-Identifier: MIT
+package namedpipe_test
- *
- * Copyright (C) 2005 Microsoft
- * Copyright (C) 2017-2021 WireGuard LLC. All Rights Reserved.
- */
-
-package winpipe_test
 
 import (
 	"bufio"
@@ -22,7 +22,7 @@ import (
 	"time"
 
 	"golang.org/x/sys/windows"
-	"golang.zx2c4.com/wireguard/ipc/winpipe"
+	"golang.zx2c4.com/wireguard/ipc/namedpipe"
 )
 
 func randomPipePath() string {
@@ -30,7 +30,7 @@ func randomPipePath() string {
 	if err != nil {
 		panic(err)
 	}
-	return `\\.\PIPE\go-winpipe-test-` + guid.String()
+	return `\\.\PIPE\go-namedpipe-test-` + guid.String()
 }
 
 func TestPingPong(t *testing.T) {
@@ -39,7 +39,7 @@ func TestPingPong(t *testing.T) {
 		pong = 24
 	)
 	pipePath := randomPipePath()
-	listener, err := winpipe.Listen(pipePath, nil)
+	listener, err := namedpipe.Listen(pipePath)
 	if err != nil {
 		t.Fatalf("unable to listen on pipe: %v", err)
 	}
@@ -64,11 +64,12 @@ func TestPingPong(t *testing.T) {
 			t.Fatalf("unable to write pong to pipe: %v", err)
 		}
 	}()
-	client, err := winpipe.Dial(pipePath, nil, nil)
+	client, err := namedpipe.DialTimeout(pipePath, time.Duration(0))
 	if err != nil {
 		t.Fatalf("unable to dial pipe: %v", err)
 	}
 	defer client.Close()
+	client.SetDeadline(time.Now().Add(time.Second * 5))
 	var data [1]byte
 	data[0] = ping
 	_, err = client.Write(data[:])
@@ -85,7 +86,7 @@ func TestPingPong(t *testing.T) {
 }
 
 func TestDialUnknownFailsImmediately(t *testing.T) {
-	_, err := winpipe.Dial(randomPipePath(), nil, nil)
+	_, err := namedpipe.DialTimeout(randomPipePath(), time.Duration(0))
 	if !errors.Is(err, syscall.ENOENT) {
 		t.Fatalf("expected ENOENT got %v", err)
 	}
@@ -93,13 +94,15 @@ func TestDialUnknownFailsImmediately(t *testing.T) {
 
 func TestDialListenerTimesOut(t *testing.T) {
 	pipePath := randomPipePath()
-	l, err := winpipe.Listen(pipePath, nil)
+	l, err := namedpipe.Listen(pipePath)
 	if err != nil {
 		t.Fatal(err)
 	}
 	defer l.Close()
-	d := 10 * time.Millisecond
+	pipe, err := namedpipe.DialTimeout(pipePath, 10*time.Millisecond)
-	_, err = winpipe.Dial(pipePath, &d, nil)
+	if err == nil {
+		pipe.Close()
+	}
 	if err != os.ErrDeadlineExceeded {
 		t.Fatalf("expected os.ErrDeadlineExceeded, got %v", err)
 	}
@@ -107,14 +110,17 @@ func TestDialListenerTimesOut(t *testing.T) {
 
 func TestDialContextListenerTimesOut(t *testing.T) {
 	pipePath := randomPipePath()
-	l, err := winpipe.Listen(pipePath, nil)
+	l, err := namedpipe.Listen(pipePath)
 	if err != nil {
 		t.Fatal(err)
 	}
 	defer l.Close()
 	d := 10 * time.Millisecond
 	ctx, _ := context.WithTimeout(context.Background(), d)
-	_, err = winpipe.DialContext(ctx, pipePath, nil)
+	pipe, err := namedpipe.DialContext(ctx, pipePath)
+	if err == nil {
+		pipe.Close()
+	}
 	if err != context.DeadlineExceeded {
 		t.Fatalf("expected context.DeadlineExceeded, got %v", err)
 	}
@@ -123,14 +129,14 @@ func TestDialContextListenerTimesOut(t *testing.T) {
 func TestDialListenerGetsCancelled(t *testing.T) {
 	pipePath := randomPipePath()
 	ctx, cancel := context.WithCancel(context.Background())
-	l, err := winpipe.Listen(pipePath, nil)
+	l, err := namedpipe.Listen(pipePath)
 	if err != nil {
 		t.Fatal(err)
 	}
-	ch := make(chan error)
 	defer l.Close()
+	ch := make(chan error)
 	go func(ctx context.Context, ch chan error) {
-		_, err := winpipe.DialContext(ctx, pipePath, nil)
+		_, err := namedpipe.DialContext(ctx, pipePath)
 		ch <- err
 	}(ctx, ch)
 	time.Sleep(time.Millisecond * 30)
@@ -147,23 +153,28 @@ func TestDialAccessDeniedWithRestrictedSD(t *testing.T) {
 	}
 	pipePath := randomPipePath()
 	sd, _ := windows.SecurityDescriptorFromString("D:")
-	c := winpipe.ListenConfig{
+	l, err := (&namedpipe.ListenConfig{
 		SecurityDescriptor: sd,
-	}
+	}).Listen(pipePath)
-	l, err := winpipe.Listen(pipePath, &c)
 	if err != nil {
 		t.Fatal(err)
 	}
 	defer l.Close()
-	_, err = winpipe.Dial(pipePath, nil, nil)
+	pipe, err := namedpipe.DialTimeout(pipePath, time.Duration(0))
+	if err == nil {
+		pipe.Close()
+	}
 	if !errors.Is(err, windows.ERROR_ACCESS_DENIED) {
 		t.Fatalf("expected ERROR_ACCESS_DENIED, got %v", err)
 	}
 }
 
-func getConnection(cfg *winpipe.ListenConfig) (client net.Conn, server net.Conn, err error) {
+func getConnection(cfg *namedpipe.ListenConfig) (client, server net.Conn, err error) {
 	pipePath := randomPipePath()
-	l, err := winpipe.Listen(pipePath, cfg)
+	if cfg == nil {
+		cfg = &namedpipe.ListenConfig{}
+	}
+	l, err := cfg.Listen(pipePath)
 	if err != nil {
 		return
 	}
@@ -179,7 +190,7 @@ func getConnection(cfg *winpipe.ListenConfig) (client net.Conn, server net.Conn,
 		ch <- response{c, err}
 	}()
 
-	c, err := winpipe.Dial(pipePath, nil, nil)
+	c, err := namedpipe.DialTimeout(pipePath, time.Duration(0))
 	if err != nil {
 		return
 	}
@@ -236,7 +247,7 @@ func server(l net.Listener, ch chan int) {
 
 func TestFullListenDialReadWrite(t *testing.T) {
 	pipePath := randomPipePath()
-	l, err := winpipe.Listen(pipePath, nil)
+	l, err := namedpipe.Listen(pipePath)
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -245,7 +256,7 @@ func TestFullListenDialReadWrite(t *testing.T) {
 	ch := make(chan int)
 	go server(l, ch)
 
-	c, err := winpipe.Dial(pipePath, nil, nil)
+	c, err := namedpipe.DialTimeout(pipePath, time.Duration(0))
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -275,7 +286,7 @@ func TestFullListenDialReadWrite(t *testing.T) {
 
 func TestCloseAbortsListen(t *testing.T) {
 	pipePath := randomPipePath()
-	l, err := winpipe.Listen(pipePath, nil)
+	l, err := namedpipe.Listen(pipePath)
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -328,7 +339,7 @@ func TestCloseServerEOFClient(t *testing.T) {
 }
 
 func TestCloseWriteEOF(t *testing.T) {
-	cfg := &winpipe.ListenConfig{
+	cfg := &namedpipe.ListenConfig{
 		MessageMode: true,
 	}
 	c, s, err := getConnection(cfg)
@@ -356,7 +367,7 @@ func TestCloseWriteEOF(t *testing.T) {
 
 func TestAcceptAfterCloseFails(t *testing.T) {
 	pipePath := randomPipePath()
-	l, err := winpipe.Listen(pipePath, nil)
+	l, err := namedpipe.Listen(pipePath)
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -369,12 +380,15 @@ func TestAcceptAfterCloseFails(t *testing.T) {
 
 func TestDialTimesOutByDefault(t *testing.T) {
 	pipePath := randomPipePath()
-	l, err := winpipe.Listen(pipePath, nil)
+	l, err := namedpipe.Listen(pipePath)
 	if err != nil {
 		t.Fatal(err)
 	}
 	defer l.Close()
-	_, err = winpipe.Dial(pipePath, nil, nil)
+	pipe, err := namedpipe.DialTimeout(pipePath, time.Duration(0)) // Should timeout after 2 seconds.
+	if err == nil {
+		pipe.Close()
+	}
 	if err != os.ErrDeadlineExceeded {
 		t.Fatalf("expected os.ErrDeadlineExceeded, got %v", err)
 	}
@@ -382,7 +396,7 @@ func TestDialTimesOutByDefault(t *testing.T) {
 
 func TestTimeoutPendingRead(t *testing.T) {
 	pipePath := randomPipePath()
-	l, err := winpipe.Listen(pipePath, nil)
+	l, err := namedpipe.Listen(pipePath)
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -400,7 +414,7 @@ func TestTimeoutPendingRead(t *testing.T) {
 		close(serverDone)
 	}()
 
-	client, err := winpipe.Dial(pipePath, nil, nil)
+	client, err := namedpipe.DialTimeout(pipePath, time.Duration(0))
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -430,7 +444,7 @@ func TestTimeoutPendingRead(t *testing.T) {
 
 func TestTimeoutPendingWrite(t *testing.T) {
 	pipePath := randomPipePath()
-	l, err := winpipe.Listen(pipePath, nil)
+	l, err := namedpipe.Listen(pipePath)
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -448,7 +462,7 @@ func TestTimeoutPendingWrite(t *testing.T) {
 		close(serverDone)
 	}()
 
-	client, err := winpipe.Dial(pipePath, nil, nil)
+	client, err := namedpipe.DialTimeout(pipePath, time.Duration(0))
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -480,13 +494,12 @@ type CloseWriter interface {
 }
 
 func TestEchoWithMessaging(t *testing.T) {
-	c := winpipe.ListenConfig{
+	pipePath := randomPipePath()
+	l, err := (&namedpipe.ListenConfig{
 		MessageMode:      true,  // Use message mode so that CloseWrite() is supported
 		InputBufferSize:  65536, // Use 64KB buffers to improve performance
 		OutputBufferSize: 65536,
-	}
+	}).Listen(pipePath)
-	pipePath := randomPipePath()
-	l, err := winpipe.Listen(pipePath, &c)
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -496,19 +509,21 @@ func TestEchoWithMessaging(t *testing.T) {
 	clientDone := make(chan bool)
 	go func() {
 		// server echo
-		conn, e := l.Accept()
+		conn, err := l.Accept()
-		if e != nil {
+		if err != nil {
-			t.Fatal(e)
+			t.Fatal(err)
 		}
 		defer conn.Close()
 
 		time.Sleep(500 * time.Millisecond) // make *sure* we don't begin to read before eof signal is sent
-		io.Copy(conn, conn)
+		_, err = io.Copy(conn, conn)
+		if err != nil {
+			t.Fatal(err)
+		}
 		conn.(CloseWriter).CloseWrite()
 		close(listenerDone)
 	}()
-	timeout := 1 * time.Second
+	client, err := namedpipe.DialTimeout(pipePath, time.Second)
-	client, err := winpipe.Dial(pipePath, &timeout, nil)
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -521,7 +536,7 @@ func TestEchoWithMessaging(t *testing.T) {
 		if e != nil {
 			t.Fatal(e)
 		}
-		if n != 2 {
+		if n != 2 || bytes[0] != 0 || bytes[1] != 1 {
 			t.Fatalf("expected 2 bytes, got %v", n)
 		}
 		close(clientDone)
@@ -545,7 +560,7 @@ func TestEchoWithMessaging(t *testing.T) {
 
 func TestConnectRace(t *testing.T) {
 	pipePath := randomPipePath()
-	l, err := winpipe.Listen(pipePath, nil)
+	l, err := namedpipe.Listen(pipePath)
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -565,7 +580,7 @@ func TestConnectRace(t *testing.T) {
 	}()
 
 	for i := 0; i < 1000; i++ {
-		c, err := winpipe.Dial(pipePath, nil, nil)
+		c, err := namedpipe.DialTimeout(pipePath, time.Duration(0))
 		if err != nil {
 			t.Fatal(err)
 		}
@@ -580,7 +595,7 @@ func TestMessageReadMode(t *testing.T) {
 	var wg sync.WaitGroup
 	defer wg.Wait()
 	pipePath := randomPipePath()
-	l, err := winpipe.Listen(pipePath, &winpipe.ListenConfig{MessageMode: true})
+	l, err := (&namedpipe.ListenConfig{MessageMode: true}).Listen(pipePath)
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -602,7 +617,7 @@ func TestMessageReadMode(t *testing.T) {
 		s.Close()
 	}()
 
-	c, err := winpipe.Dial(pipePath, nil, nil)
+	c, err := namedpipe.DialTimeout(pipePath, time.Duration(0))
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -643,13 +658,13 @@ func TestListenConnectRace(t *testing.T) {
 		var wg sync.WaitGroup
 		wg.Add(1)
 		go func() {
-			c, err := winpipe.Dial(pipePath, nil, nil)
+			c, err := namedpipe.DialTimeout(pipePath, time.Duration(0))
 			if err == nil {
 				c.Close()
 			}
 			wg.Done()
 		}()
-		s, err := winpipe.Listen(pipePath, nil)
+		s, err := namedpipe.Listen(pipePath)
 		if err != nil {
 			t.Error(i, err)
 		} else {

ipc/uapi_bsd.go

@@ -54,7 +54,6 @@ func (l *UAPIListener) Addr() net.Addr {
 }
 
 func UAPIListen(name string, file *os.File) (net.Listener, error) {
-
 	// wrap file in listener
 
 	listener, err := net.FileListener(file)
@@ -104,7 +103,7 @@ func UAPIListen(name string, file *os.File) (net.Listener, error) {
 				l.connErr <- err
 				return
 			}
-			if kerr != nil || n != 1 {
+			if (kerr != nil || n != 1) && kerr != unix.EINTR {
 				if kerr != nil {
 					l.connErr <- kerr
 				} else {

ipc/uapi_js.go

@@ -0,0 +1,15 @@
+/* SPDX-License-Identifier: MIT
+ *
+ * Copyright (C) 2021 WireGuard LLC. All Rights Reserved.
+ */
+
+package ipc
+
+// Made up sentinel error codes for the js/wasm platform.
+const (
+	IpcErrorIO        = 1
+	IpcErrorInvalid   = 2
+	IpcErrorPortInUse = 3
+	IpcErrorUnknown   = 4
+	IpcErrorProtocol  = 5
+)

ipc/uapi_linux.go

@@ -51,7 +51,6 @@ func (l *UAPIListener) Addr() net.Addr {
 }
 
 func UAPIListen(name string, file *os.File) (net.Listener, error) {
-
 	// wrap file in listener
 
 	listener, err := net.FileListener(file)

ipc/uapi_unix.go

@@ -33,7 +33,7 @@ func sockPath(iface string) string {
 }
 
 func UAPIOpen(name string) (*os.File, error) {
-	if err := os.MkdirAll(socketDirectory, 0755); err != nil {
+	if err := os.MkdirAll(socketDirectory, 0o755); err != nil {
 		return nil, err
 	}
 
@@ -43,7 +43,7 @@ func UAPIOpen(name string) (*os.File, error) {
 		return nil, err
 	}
 
-	oldUmask := unix.Umask(0077)
+	oldUmask := unix.Umask(0o077)
 	defer unix.Umask(oldUmask)
 
 	listener, err := net.ListenUnix("unix", addr)

ipc/uapi_windows.go

@@ -9,8 +9,7 @@ import (
 	"net"
 
 	"golang.org/x/sys/windows"
-
+	"golang.zx2c4.com/wireguard/ipc/namedpipe"
-	"golang.zx2c4.com/wireguard/ipc/winpipe"
 )
 
 // TODO: replace these with actual standard windows error numbers from the win package
@@ -61,10 +60,9 @@ func init() {
 }
 
 func UAPIListen(name string) (net.Listener, error) {
-	config := winpipe.ListenConfig{
+	listener, err := (&namedpipe.ListenConfig{
 		SecurityDescriptor: UAPISecurityDescriptor,
-	}
+	}).Listen(`\\.\pipe\ProtectedPrefix\Administrators\WireGuard\` + name)
-	listener, err := winpipe.Listen(`\\.\pipe\ProtectedPrefix\Administrators\WireGuard\`+name, &config)
 	if err != nil {
 		return nil, err
 	}

main.go

@@ -169,7 +169,6 @@ func main() {
 
 		return os.NewFile(uintptr(fd), ""), nil
 	}()
-
 	if err != nil {
 		logger.Errorf("UAPI listen error: %v", err)
 		os.Exit(ExitSetupFailed)

ratelimiter/ratelimiter.go

@@ -6,7 +6,7 @@
 package ratelimiter
 
 import (
-	"net"
+	"net/netip"
 	"sync"
 	"time"
 )
@@ -30,8 +30,7 @@ type Ratelimiter struct {
 	timeNow func() time.Time
 
 	stopReset chan struct{} // send to reset, close to stop
-	tableIPv4 map[[net.IPv4len]byte]*RatelimiterEntry
+	table     map[netip.Addr]*RatelimiterEntry
-	tableIPv6 map[[net.IPv6len]byte]*RatelimiterEntry
 }
 
 func (rate *Ratelimiter) Close() {
@@ -57,8 +56,7 @@ func (rate *Ratelimiter) Init() {
 	}
 
 	rate.stopReset = make(chan struct{})
-	rate.tableIPv4 = make(map[[net.IPv4len]byte]*RatelimiterEntry)
+	rate.table = make(map[netip.Addr]*RatelimiterEntry)
-	rate.tableIPv6 = make(map[[net.IPv6len]byte]*RatelimiterEntry)
 
 	stopReset := rate.stopReset // store in case Init is called again.
 
@@ -87,71 +85,39 @@ func (rate *Ratelimiter) cleanup() (empty bool) {
 	rate.mu.Lock()
 	defer rate.mu.Unlock()
 
-	for key, entry := range rate.tableIPv4 {
+	for key, entry := range rate.table {
 		entry.mu.Lock()
 		if rate.timeNow().Sub(entry.lastTime) > garbageCollectTime {
-			delete(rate.tableIPv4, key)
+			delete(rate.table, key)
 		}
 		entry.mu.Unlock()
 	}
 
-	for key, entry := range rate.tableIPv6 {
+	return len(rate.table) == 0
-		entry.mu.Lock()
-		if rate.timeNow().Sub(entry.lastTime) > garbageCollectTime {
-			delete(rate.tableIPv6, key)
-		}
-		entry.mu.Unlock()
-	}
-
-	return len(rate.tableIPv4) == 0 && len(rate.tableIPv6) == 0
 }
 
-func (rate *Ratelimiter) Allow(ip net.IP) bool {
+func (rate *Ratelimiter) Allow(ip netip.Addr) bool {
 	var entry *RatelimiterEntry
-	var keyIPv4 [net.IPv4len]byte
-	var keyIPv6 [net.IPv6len]byte
-
 	// lookup entry
-
-	IPv4 := ip.To4()
-	IPv6 := ip.To16()
-
 	rate.mu.RLock()
-
+	entry = rate.table[ip]
-	if IPv4 != nil {
-		copy(keyIPv4[:], IPv4)
-		entry = rate.tableIPv4[keyIPv4]
-	} else {
-		copy(keyIPv6[:], IPv6)
-		entry = rate.tableIPv6[keyIPv6]
-	}
-
 	rate.mu.RUnlock()
 
 	// make new entry if not found
-
 	if entry == nil {
 		entry = new(RatelimiterEntry)
 		entry.tokens = maxTokens - packetCost
 		entry.lastTime = rate.timeNow()
 		rate.mu.Lock()
-		if IPv4 != nil {
+		rate.table[ip] = entry
-			rate.tableIPv4[keyIPv4] = entry
+		if len(rate.table) == 1 {
-			if len(rate.tableIPv4) == 1 && len(rate.tableIPv6) == 0 {
+			rate.stopReset <- struct{}{}
-				rate.stopReset <- struct{}{}
-			}
-		} else {
-			rate.tableIPv6[keyIPv6] = entry
-			if len(rate.tableIPv6) == 1 && len(rate.tableIPv4) == 0 {
-				rate.stopReset <- struct{}{}
-			}
 		}
 		rate.mu.Unlock()
 		return true
 	}
 
 	// add tokens to entry
-
 	entry.mu.Lock()
 	now := rate.timeNow()
 	entry.tokens += now.Sub(entry.lastTime).Nanoseconds()
@@ -161,7 +127,6 @@ func (rate *Ratelimiter) Allow(ip net.IP) bool {
 	}
 
 	// subtract cost of packet
-
 	if entry.tokens > packetCost {
 		entry.tokens -= packetCost
 		entry.mu.Unlock()

ratelimiter/ratelimiter_test.go

@@ -6,7 +6,7 @@
 package ratelimiter
 
 import (
-	"net"
+	"net/netip"
 	"testing"
 	"time"
 )
@@ -71,21 +71,21 @@ func TestRatelimiter(t *testing.T) {
 		text:    "packet following 2 packet burst",
 	})
 
-	ips := []net.IP{
+	ips := []netip.Addr{
-		net.ParseIP("127.0.0.1"),
+		netip.MustParseAddr("127.0.0.1"),
-		net.ParseIP("192.168.1.1"),
+		netip.MustParseAddr("192.168.1.1"),
-		net.ParseIP("172.167.2.3"),
+		netip.MustParseAddr("172.167.2.3"),
-		net.ParseIP("97.231.252.215"),
+		netip.MustParseAddr("97.231.252.215"),
-		net.ParseIP("248.97.91.167"),
+		netip.MustParseAddr("248.97.91.167"),
-		net.ParseIP("188.208.233.47"),
+		netip.MustParseAddr("188.208.233.47"),
-		net.ParseIP("104.2.183.179"),
+		netip.MustParseAddr("104.2.183.179"),
-		net.ParseIP("72.129.46.120"),
+		netip.MustParseAddr("72.129.46.120"),
-		net.ParseIP("2001:0db8:0a0b:12f0:0000:0000:0000:0001"),
+		netip.MustParseAddr("2001:0db8:0a0b:12f0:0000:0000:0000:0001"),
-		net.ParseIP("f5c2:818f:c052:655a:9860:b136:6894:25f0"),
+		netip.MustParseAddr("f5c2:818f:c052:655a:9860:b136:6894:25f0"),
-		net.ParseIP("b2d7:15ab:48a7:b07c:a541:f144:a9fe:54fc"),
+		netip.MustParseAddr("b2d7:15ab:48a7:b07c:a541:f144:a9fe:54fc"),
-		net.ParseIP("a47b:786e:1671:a22b:d6f9:4ab0:abc7:c918"),
+		netip.MustParseAddr("a47b:786e:1671:a22b:d6f9:4ab0:abc7:c918"),
-		net.ParseIP("ea1e:d155:7f7a:98fb:2bf5:9483:80f6:5445"),
+		netip.MustParseAddr("ea1e:d155:7f7a:98fb:2bf5:9483:80f6:5445"),
-		net.ParseIP("3f0e:54a2:f5b4:cd19:a21d:58e1:3746:84c4"),
+		netip.MustParseAddr("3f0e:54a2:f5b4:cd19:a21d:58e1:3746:84c4"),
 	}
 
 	now := time.Now()

replay/replay.go

@@ -34,7 +34,7 @@ func (f *Filter) Reset() {
 
 // ValidateCounter checks if the counter should be accepted.
 // Overlimit counters (>= limit) are always rejected.
-func (f *Filter) ValidateCounter(counter uint64, limit uint64) bool {
+func (f *Filter) ValidateCounter(counter, limit uint64) bool {
 	if counter >= limit {
 		return false
 	}

rwcancel/rwcancel.go

@@ -1,4 +1,4 @@
-//go:build !windows
+//go:build !windows && !js
 
 /* SPDX-License-Identifier: MIT
  *

rwcancel/rwcancel_stub.go

@@ -1,8 +1,9 @@
+//go:build windows || js
+
 // SPDX-License-Identifier: MIT
 
 package rwcancel
 
-type RWCancel struct {
+type RWCancel struct{}
-}
 
 func (*RWCancel) Cancel() {}

tai64n/tai64n.go

@@ -11,9 +11,11 @@ import (
 	"time"
 )
 
-const TimestampSize = 12
+const (
-const base = uint64(0x400000000000000a)
+	TimestampSize = 12
-const whitenerMask = uint32(0x1000000 - 1)
+	base          = uint64(0x400000000000000a)
+	whitenerMask  = uint32(0x1000000 - 1)
+)
 
 type Timestamp [TimestampSize]byte
 

tun/netstack/examples/http_client.go

@@ -1,4 +1,5 @@
 //go:build ignore
+// +build ignore
 
 /* SPDX-License-Identifier: MIT
  *
@@ -10,8 +11,8 @@ package main
 import (
 	"io"
 	"log"
-	"net"
 	"net/http"
+	"net/netip"
 
 	"golang.zx2c4.com/wireguard/conn"
 	"golang.zx2c4.com/wireguard/device"
@@ -20,8 +21,8 @@ import (
 
 func main() {
 	tun, tnet, err := netstack.CreateNetTUN(
-		[]net.IP{net.ParseIP("192.168.4.29")},
+		[]netip.Addr{netip.MustParseAddr("192.168.4.29")},
-		[]net.IP{net.ParseIP("8.8.8.8")},
+		[]netip.Addr{netip.MustParseAddr("8.8.8.8")},
 		1420)
 	if err != nil {
 		log.Panic(err)

tun/netstack/examples/http_server.go

@@ -1,4 +1,5 @@
 //go:build ignore
+// +build ignore
 
 /* SPDX-License-Identifier: MIT
  *
@@ -12,6 +13,7 @@ import (
 	"log"
 	"net"
 	"net/http"
+	"net/netip"
 
 	"golang.zx2c4.com/wireguard/conn"
 	"golang.zx2c4.com/wireguard/device"
@@ -20,8 +22,8 @@ import (
 
 func main() {
 	tun, tnet, err := netstack.CreateNetTUN(
-		[]net.IP{net.ParseIP("192.168.4.29")},
+		[]netip.Addr{netip.MustParseAddr("192.168.4.29")},
-		[]net.IP{net.ParseIP("8.8.8.8"), net.ParseIP("8.8.4.4")},
+		[]netip.Addr{netip.MustParseAddr("8.8.8.8"), netip.MustParseAddr("8.8.4.4")},
 		1420,
 	)
 	if err != nil {

tun/netstack/examples/ping_client.go

@@ -0,0 +1,76 @@
+//go:build ignore
+// +build ignore
+
+/* SPDX-License-Identifier: MIT
+ *
+ * Copyright (C) 2019-2021 WireGuard LLC. All Rights Reserved.
+ */
+
+package main
+
+import (
+	"bytes"
+	"log"
+	"math/rand"
+	"net/netip"
+	"time"
+
+	"golang.org/x/net/icmp"
+	"golang.org/x/net/ipv4"
+
+	"golang.zx2c4.com/wireguard/conn"
+	"golang.zx2c4.com/wireguard/device"
+	"golang.zx2c4.com/wireguard/tun/netstack"
+)
+
+func main() {
+	tun, tnet, err := netstack.CreateNetTUN(
+		[]netip.Addr{netip.MustParseAddr("192.168.4.29")},
+		[]netip.Addr{netip.MustParseAddr("8.8.8.8")},
+		1420)
+	if err != nil {
+		log.Panic(err)
+	}
+	dev := device.NewDevice(tun, conn.NewDefaultBind(), device.NewLogger(device.LogLevelVerbose, ""))
+	dev.IpcSet(`private_key=a8dac1d8a70a751f0f699fb14ba1cff7b79cf4fbd8f09f44c6e6a90d0369604f
+public_key=25123c5dcd3328ff645e4f2a3fce0d754400d3887a0cb7c56f0267e20fbf3c5b
+endpoint=163.172.161.0:12912
+allowed_ip=0.0.0.0/0
+`)
+	err = dev.Up()
+	if err != nil {
+		log.Panic(err)
+	}
+
+	socket, err := tnet.Dial("ping4", "zx2c4.com")
+	if err != nil {
+		log.Panic(err)
+	}
+	requestPing := icmp.Echo{
+		Seq:  rand.Intn(1 << 16),
+		Data: []byte("gopher burrow"),
+	}
+	icmpBytes, _ := (&icmp.Message{Type: ipv4.ICMPTypeEcho, Code: 0, Body: &requestPing}).Marshal(nil)
+	socket.SetReadDeadline(time.Now().Add(time.Second * 10))
+	start := time.Now()
+	_, err = socket.Write(icmpBytes)
+	if err != nil {
+		log.Panic(err)
+	}
+	n, err := socket.Read(icmpBytes[:])
+	if err != nil {
+		log.Panic(err)
+	}
+	replyPacket, err := icmp.ParseMessage(1, icmpBytes[:n])
+	if err != nil {
+		log.Panic(err)
+	}
+	replyPing, ok := replyPacket.Body.(*icmp.Echo)
+	if !ok {
+		log.Panicf("invalid reply type: %v", replyPacket)
+	}
+	if !bytes.Equal(replyPing.Data, requestPing.Data) || replyPing.Seq != requestPing.Seq {
+		log.Panicf("invalid ping reply: %v", replyPing)
+	}
+	log.Printf("Ping latency: %v", time.Since(start))
+}

tun/netstack/go.mod

@@ -1,11 +1,17 @@
 module golang.zx2c4.com/wireguard/tun/netstack
 
-go 1.16
+go 1.18
 
 require (
-	golang.org/x/net v0.0.0-20210423184538-5f58ad60dda6
+	golang.org/x/net v0.0.0-20220225172249-27dd8689420f
-	golang.org/x/sys v0.0.0-20210423185535-09eb48e85fd7 // indirect
+	golang.zx2c4.com/wireguard v0.0.0-20220316235147-5aff28b14c24
-	golang.org/x/time v0.0.0-20210220033141-f8bda1e9f3ba // indirect
+	gvisor.dev/gvisor v0.0.0-20211020211948-f76a604701b6
-	golang.zx2c4.com/wireguard v0.0.0-20210424170727-c9db4b7aaa22
+)
-	gvisor.dev/gvisor v0.0.0-20210506004418-fbfeba3024f0
+
+require (
+	github.com/google/btree v1.0.1 // indirect
+	golang.org/x/crypto v0.0.0-20220315160706-3147a52a75dd // indirect
+	golang.org/x/sys v0.0.0-20220315194320-039c03cc5b86 // indirect
+	golang.org/x/time v0.0.0-20191024005414-555d28b269f0 // indirect
+	golang.zx2c4.com/wintun v0.0.0-20211104114900-415007cec224 // indirect
 )

tun/netstack/go.sum

@@ -15,7 +15,9 @@ cloud.google.com/go v0.57.0/go.mod h1:oXiQ6Rzq3RAkkY7N6t3TcE6jE+CIBBbA36lwQ1JyzZ
 cloud.google.com/go v0.62.0/go.mod h1:jmCYTdRCQuc1PHIIJ/maLInMho30T/Y0M4hTdTShOYc=
 cloud.google.com/go v0.65.0/go.mod h1:O5N8zS7uWy9vkA9vayVHs65eM1ubvY4h553ofrNHObY=
 cloud.google.com/go v0.72.0/go.mod h1:M+5Vjvlc2wnp6tjzE102Dw08nGShTscUx2nZMufOKPI=
-cloud.google.com/go v0.75.0/go.mod h1:VGuuCn7PG0dwsd5XPVm2Mm3wlh3EL55/79EKB6hlPTY=
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@@ -128,6 +252,7 @@ github.com/golang/mock v1.4.0/go.mod h1:UOMv5ysSaYNkG+OFQykRIcU/QvvxJf3p21QfJ2Bt
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@@ -143,9 +268,11 @@ github.com/golang/protobuf v1.4.0/go.mod h1:jodUvKwWbYaEsadDk5Fwe5c77LiNKVO9IDvq
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@@ -154,11 +281,14 @@ github.com/google/go-cmp v0.4.1/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/
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@@ -312,20 +594,30 @@ golang.org/x/mod v0.1.1-0.20191107180719-034126e5016b/go.mod h1:QqPTAvyqsEbceGzB
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@@ -343,10 +635,12 @@ golang.org/x/net v0.0.0-20200707034311-ab3426394381/go.mod h1:/O7V0waA8r7cgGh81R
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@@ -355,6 +649,10 @@ golang.org/x/oauth2 v0.0.0-20200107190931-bf48bf16ab8d/go.mod h1:gOpvHmFTYa4Iltr
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@@ -364,10 +662,14 @@ golang.org/x/sync v0.0.0-20190911185100-cd5d95a43a6e/go.mod h1:RxMgew5VJxzue5/jJ
 golang.org/x/sync v0.0.0-20200317015054-43a5402ce75a/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
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@@ -376,17 +678,25 @@ golang.org/x/sys v0.0.0-20190422165155-953cdadca894/go.mod h1:h1NjWce9XRLGQEsW7w
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@@ -402,17 +712,24 @@ golang.org/x/sys v0.0.0-20200501052902-10377860bb8e/go.mod h1:h1NjWce9XRLGQEsW7w
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@@ -422,12 +739,13 @@ golang.org/x/text v0.3.1-0.20180807135948-17ff2d5776d2/go.mod h1:NqM8EUOU14njkJ3
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@@ -436,11 +754,13 @@ golang.org/x/tools v0.0.0-20190226205152-f727befe758c/go.mod h1:9Yl7xja0Znq3iFh3
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@@ -467,20 +787,25 @@ golang.org/x/tools v0.0.0-20200501065659-ab2804fb9c9d/go.mod h1:EkVYQZoAsY45+roY
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@@ -499,6 +824,9 @@ google.golang.org/api v0.29.0/go.mod h1:Lcubydp8VUV7KeIHD9z2Bys/sm/vGKnG1UHuDBSr
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 google.golang.org/api v0.36.0/go.mod h1:+z5ficQTmoYpPn8LCUNVpK5I7hwkpjbcgqA7I34qYtE=
+google.golang.org/api v0.40.0/go.mod h1:fYKFpnQN0DsDSKRVRcQSDQNtqWPfM9i+zNPxepjRCQ8=
+google.golang.org/api v0.41.0/go.mod h1:RkxM5lITDfTzmyKFPt+wGrCJbVfniCr2ool8kTBzRTU=
+google.golang.org/api v0.42.0/go.mod h1:+Oj4s6ch2SEGtPjGqfUfZonBH0GjQH89gTeKKAEGZKI=
 google.golang.org/appengine v1.1.0/go.mod h1:EbEs0AVv82hx2wNQdGPgUI5lhzA/G0D9YwlJXL52JkM=
 google.golang.org/appengine v1.4.0/go.mod h1:xpcJRLb0r/rnEns0DIKYYv+WjYCduHsrkT7/EB5XEv4=
 google.golang.org/appengine v1.5.0/go.mod h1:xpcJRLb0r/rnEns0DIKYYv+WjYCduHsrkT7/EB5XEv4=
@@ -506,6 +834,7 @@ google.golang.org/appengine v1.6.1/go.mod h1:i06prIuMbXzDqacNJfV5OdTW448YApPu5ww
 google.golang.org/appengine v1.6.5/go.mod h1:8WjMMxjGQR8xUklV/ARdw2HLXBOI7O7uCIDZVag1xfc=
 google.golang.org/appengine v1.6.6/go.mod h1:8WjMMxjGQR8xUklV/ARdw2HLXBOI7O7uCIDZVag1xfc=
 google.golang.org/appengine v1.6.7/go.mod h1:8WjMMxjGQR8xUklV/ARdw2HLXBOI7O7uCIDZVag1xfc=
+google.golang.org/cloud v0.0.0-20151119220103-975617b05ea8/go.mod h1:0H1ncTHf11KCFhTc/+EFRbzSCOZx+VUbRMk55Yv5MYk=
 google.golang.org/genproto v0.0.0-20180817151627-c66870c02cf8/go.mod h1:JiN7NxoALGmiZfu7CAH4rXhgtRTLTxftemlI0sWmxmc=
 google.golang.org/genproto v0.0.0-20190307195333-5fe7a883aa19/go.mod h1:VzzqZJRnGkLBvHegQrXjBqPurQTc5/KpmUdxsrq26oE=
 google.golang.org/genproto v0.0.0-20190418145605-e7d98fc518a7/go.mod h1:VzzqZJRnGkLBvHegQrXjBqPurQTc5/KpmUdxsrq26oE=
@@ -530,6 +859,7 @@ google.golang.org/genproto v0.0.0-20200312145019-da6875a35672/go.mod h1:55QSHmfG
 google.golang.org/genproto v0.0.0-20200331122359-1ee6d9798940/go.mod h1:55QSHmfGQM9UVYDPBsyGGes0y52j32PQ3BqQfXhyH3c=
 google.golang.org/genproto v0.0.0-20200430143042-b979b6f78d84/go.mod h1:55QSHmfGQM9UVYDPBsyGGes0y52j32PQ3BqQfXhyH3c=
 google.golang.org/genproto v0.0.0-20200511104702-f5ebc3bea380/go.mod h1:55QSHmfGQM9UVYDPBsyGGes0y52j32PQ3BqQfXhyH3c=
+google.golang.org/genproto v0.0.0-20200513103714-09dca8ec2884/go.mod h1:55QSHmfGQM9UVYDPBsyGGes0y52j32PQ3BqQfXhyH3c=
 google.golang.org/genproto v0.0.0-20200515170657-fc4c6c6a6587/go.mod h1:YsZOwe1myG/8QRHRsmBRE1LrgQY60beZKjly0O1fX9U=
 google.golang.org/genproto v0.0.0-20200526211855-cb27e3aa2013/go.mod h1:NbSheEEYHJ7i3ixzK3sjbqSGDJWnxyFXZblF3eUsNvo=
 google.golang.org/genproto v0.0.0-20200618031413-b414f8b61790/go.mod h1:jDfRM7FcilCzHH/e9qn6dsT145K34l5v+OpcnNgKAAA=
@@ -538,13 +868,21 @@ google.golang.org/genproto v0.0.0-20200804131852-c06518451d9c/go.mod h1:FWY/as6D
 google.golang.org/genproto v0.0.0-20200825200019-8632dd797987/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
 google.golang.org/genproto v0.0.0-20200904004341-0bd0a958aa1d/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
 google.golang.org/genproto v0.0.0-20201109203340-2640f1f9cdfb/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
+google.golang.org/genproto v0.0.0-20201110150050-8816d57aaa9a/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
 google.golang.org/genproto v0.0.0-20201201144952-b05cb90ed32e/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
-google.golang.org/genproto v0.0.0-20210108203827-ffc7fda8c3d7/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
+google.golang.org/genproto v0.0.0-20201210142538-e3217bee35cc/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
+google.golang.org/genproto v0.0.0-20201214200347-8c77b98c765d/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
+google.golang.org/genproto v0.0.0-20210222152913-aa3ee6e6a81c/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
+google.golang.org/genproto v0.0.0-20210303154014-9728d6b83eeb/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
+google.golang.org/genproto v0.0.0-20210310155132-4ce2db91004e/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
+google.golang.org/genproto v0.0.0-20210312152112-fc591d9ea70f/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
 google.golang.org/grpc v1.19.0/go.mod h1:mqu4LbDTu4XGKhr4mRzUsmM4RtVoemTSY81AxZiDr8c=
 google.golang.org/grpc v1.20.1/go.mod h1:10oTOabMzJvdu6/UiuZezV6QK5dSlG84ov/aaiqXj38=
+google.golang.org/grpc v1.21.0/go.mod h1:oYelfM1adQP15Ek0mdvEgi9Df8B9CZIaU1084ijfRaM=
 google.golang.org/grpc v1.21.1/go.mod h1:oYelfM1adQP15Ek0mdvEgi9Df8B9CZIaU1084ijfRaM=
 google.golang.org/grpc v1.23.0/go.mod h1:Y5yQAOtifL1yxbo5wqy6BxZv8vAUGQwXBOALyacEbxg=
 google.golang.org/grpc v1.23.1/go.mod h1:Y5yQAOtifL1yxbo5wqy6BxZv8vAUGQwXBOALyacEbxg=
+google.golang.org/grpc v1.24.0/go.mod h1:XDChyiUovWa60DnaeDeZmSW86xtLtjtZbwvSiRnRtcA=
 google.golang.org/grpc v1.25.1/go.mod h1:c3i+UQWmh7LiEpx4sFZnkU36qjEYZ0imhYfXVyQciAY=
 google.golang.org/grpc v1.26.0/go.mod h1:qbnxyOmOxrQa7FizSgH+ReBfzJrCY1pSN7KXBS8abTk=
 google.golang.org/grpc v1.27.0/go.mod h1:qbnxyOmOxrQa7FizSgH+ReBfzJrCY1pSN7KXBS8abTk=
@@ -554,9 +892,12 @@ google.golang.org/grpc v1.29.1/go.mod h1:itym6AZVZYACWQqET3MqgPpjcuV5QH3BxFS3Iji
 google.golang.org/grpc v1.30.0/go.mod h1:N36X2cJ7JwdamYAgDz+s+rVMFjt3numwzf/HckM8pak=
 google.golang.org/grpc v1.31.0/go.mod h1:N36X2cJ7JwdamYAgDz+s+rVMFjt3numwzf/HckM8pak=
 google.golang.org/grpc v1.31.1/go.mod h1:N36X2cJ7JwdamYAgDz+s+rVMFjt3numwzf/HckM8pak=
+google.golang.org/grpc v1.33.1/go.mod h1:fr5YgcSWrqhRRxogOsw7RzIpsmvOZ6IcH4kBYTpR3n0=
 google.golang.org/grpc v1.33.2/go.mod h1:JMHMWHQWaTccqQQlmk3MJZS+GWXOdAesneDmEnv2fbc=
 google.golang.org/grpc v1.34.0/go.mod h1:WotjhfgOW/POjDeRt8vscBtXq+2VjORFy659qA51WJ8=
-google.golang.org/grpc v1.36.0-dev.0.20210208035533-9280052d3665/go.mod h1:qjiiYl8FncCW8feJPdyg3v6XW24KsRHe+dy9BAGRRjU=
+google.golang.org/grpc v1.35.0/go.mod h1:qjiiYl8FncCW8feJPdyg3v6XW24KsRHe+dy9BAGRRjU=
+google.golang.org/grpc v1.36.0/go.mod h1:qjiiYl8FncCW8feJPdyg3v6XW24KsRHe+dy9BAGRRjU=
+google.golang.org/grpc v1.39.0-dev.0.20210518002758-2713b77e8526/go.mod h1:PImNr+rS9TWYb2O4/emRugxiyHZ5JyHW5F+RPnDzfrE=
 google.golang.org/protobuf v0.0.0-20200109180630-ec00e32a8dfd/go.mod h1:DFci5gLYBciE7Vtevhsrf46CRTquxDuWsQurQQe4oz8=
 google.golang.org/protobuf v0.0.0-20200221191635-4d8936d0db64/go.mod h1:kwYJMbMJ01Woi6D6+Kah6886xMZcty6N08ah7+eCXa0=
 google.golang.org/protobuf v0.0.0-20200228230310-ab0ca4ff8a60/go.mod h1:cfTl7dwQJ+fmap5saPgwCLgHXTUD7jkjRqWcaiX5VyM=
@@ -567,19 +908,36 @@ google.golang.org/protobuf v1.23.0/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2
 google.golang.org/protobuf v1.23.1-0.20200526195155-81db48ad09cc/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU=
 google.golang.org/protobuf v1.24.0/go.mod h1:r/3tXBNzIEhYS9I1OUVjXDlt8tc493IdKGjtUeSXeh4=
 google.golang.org/protobuf v1.25.0/go.mod h1:9JNX74DMeImyA3h4bdi1ymwjUzf21/xIlbajtzgsN7c=
-google.golang.org/protobuf v1.25.1-0.20201020201750-d3470999428b/go.mod h1:hFxJC2f0epmp1elRCiEGJTKAWbwxZ2nvqZdHl3FQXCY=
+google.golang.org/protobuf v1.26.0-rc.1/go.mod h1:jlhhOSvTdKEhbULTjvd4ARK9grFBp09yW+WbY/TyQbw=
+google.golang.org/protobuf v1.26.0/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc=
+gopkg.in/airbrake/gobrake.v2 v2.0.9/go.mod h1:/h5ZAUhDkGaJfjzjKLSjv6zCL6O0LLBxU4K+aSYdM/U=
+gopkg.in/alecthomas/kingpin.v2 v2.2.6/go.mod h1:FMv+mEhP44yOT+4EoQTLFTRgOQ1FBLkstjWtayDeSgw=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/cheggaaa/pb.v1 v1.0.25/go.mod h1:V/YB90LKu/1FcN3WVnfiiE5oMCibMjukxqG/qStrOgw=
 gopkg.in/errgo.v2 v2.1.0/go.mod h1:hNsd1EY+bozCKY1Ytp96fpM3vjJbqLJn88ws8XvfDNI=
 gopkg.in/fsnotify.v1 v1.4.7/go.mod h1:Tz8NjZHkW78fSQdbUxIjBTcgA1z1m8ZHf0WmKUhAMys=
+gopkg.in/gemnasium/logrus-airbrake-hook.v2 v2.1.2/go.mod h1:Xk6kEKp8OKb+X14hQBKWaSkCsqBpgog8nAV2xsGOxlo=
 gopkg.in/inf.v0 v0.9.1/go.mod h1:cWUDdTG/fYaXco+Dcufb5Vnc6Gp2YChqWtbxRZE0mXw=
+gopkg.in/natefinch/lumberjack.v2 v2.0.0/go.mod h1:l0ndWWf7gzL7RNwBG7wST/UCcT4T24xpD6X8LsfU/+k=
+gopkg.in/resty.v1 v1.12.0/go.mod h1:mDo4pnntr5jdWRML875a/NmxYqAlA73dVijT2AXvQQo=
+gopkg.in/square/go-jose.v2 v2.3.1/go.mod h1:M9dMgbHiYLoDGQrXy7OpJDJWiKiU//h+vD76mk0e1AI=
+gopkg.in/square/go-jose.v2 v2.5.1/go.mod h1:M9dMgbHiYLoDGQrXy7OpJDJWiKiU//h+vD76mk0e1AI=
 gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7/go.mod h1:dt/ZhP58zS4L8KSrWDmTeBkI65Dw0HsyUHuEVlX15mw=
+gopkg.in/yaml.v2 v2.0.0-20170812160011-eb3733d160e7/go.mod h1:JAlM8MvJe8wmxCU4Bli9HhUf9+ttbYbLASfIpnQbh74=
 gopkg.in/yaml.v2 v2.2.1/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v2 v2.2.3/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v2 v2.2.4/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v2 v2.2.5/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.8/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 gotest.tools v2.2.0+incompatible/go.mod h1:DsYFclhRJ6vuDpmuTbkuFWG+y2sxOXAzmJt81HFBacw=
-gvisor.dev/gvisor v0.0.0-20210506004418-fbfeba3024f0 h1:Ny53d6x76f7EgvYe7pi8SQcIzdRM69y1ckQ8rRtT6ww=
+gotest.tools/v3 v3.0.2/go.mod h1:3SzNCllyD9/Y+b5r9JIKQ474KzkZyqLqEfYqMsX94Bk=
-gvisor.dev/gvisor v0.0.0-20210506004418-fbfeba3024f0/go.mod h1:ucHEMlckp+S/YzKEpwwAyGBhAh807Wxq/8Erc6gFxCE=
+gotest.tools/v3 v3.0.3/go.mod h1:Z7Lb0S5l+klDB31fvDQX8ss/FlKDxtlFlw3Oa8Ymbl8=
+gvisor.dev/gvisor v0.0.0-20211020211948-f76a604701b6 h1:lgV5mAyX6S2EZAkZcvFkAs18WZ7yJbRzEv/PCH8iSlw=
+gvisor.dev/gvisor v0.0.0-20211020211948-f76a604701b6/go.mod h1:m1RK/gef4nU1CWOFscQWVk7iUgGH2Hz9Ee+lgeCzOBo=
 honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
 honnef.co/go/tools v0.0.0-20190106161140-3f1c8253044a/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
 honnef.co/go/tools v0.0.0-20190418001031-e561f6794a2a/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
@@ -592,14 +950,24 @@ k8s.io/api v0.16.13/go.mod h1:QWu8UWSTiuQZMMeYjwLs6ILu5O74qKSJ0c+4vrchDxs=
 k8s.io/apimachinery v0.16.13/go.mod h1:4HMHS3mDHtVttspuuhrJ1GGr/0S9B6iWYWZ57KnnZqQ=
 k8s.io/apimachinery v0.16.14-rc.0/go.mod h1:4HMHS3mDHtVttspuuhrJ1GGr/0S9B6iWYWZ57KnnZqQ=
 k8s.io/client-go v0.16.13/go.mod h1:UKvVT4cajC2iN7DCjLgT0KVY/cbY6DGdUCyRiIfws5M=
+k8s.io/component-base v0.16.13/go.mod h1:cNe9ZU2A6tqBG0gPQ4/T/KolI9Cv2NA1+7uvmkA7Cyc=
+k8s.io/cri-api v0.20.6/go.mod h1:ew44AjNXwyn1s0U4xCKGodU7J1HzBeZ1MpGrpa5r8Yc=
 k8s.io/gengo v0.0.0-20190128074634-0689ccc1d7d6/go.mod h1:ezvh/TsK7cY6rbqRK0oQQ8IAqLxYwwyPxAX1Pzy0ii0=
+k8s.io/gengo v0.0.0-20200413195148-3a45101e95ac/go.mod h1:ezvh/TsK7cY6rbqRK0oQQ8IAqLxYwwyPxAX1Pzy0ii0=
 k8s.io/klog v0.0.0-20181102134211-b9b56d5dfc92/go.mod h1:Gq+BEi5rUBO/HRz0bTSXDUcqjScdoY3a9IHpCEIOOfk=
 k8s.io/klog v0.3.0/go.mod h1:Gq+BEi5rUBO/HRz0bTSXDUcqjScdoY3a9IHpCEIOOfk=
 k8s.io/klog v1.0.0/go.mod h1:4Bi6QPql/J/LkTDqv7R/cd3hPo4k2DG6Ptcz060Ez5I=
+k8s.io/klog/v2 v2.0.0/go.mod h1:PBfzABfn139FHAV07az/IF9Wp1bkk3vpT2XSJ76fSDE=
+k8s.io/klog/v2 v2.4.0/go.mod h1:Od+F08eJP+W3HUb4pSrPpgp9DGU4GzlpG/TmITuYh/Y=
 k8s.io/kube-openapi v0.0.0-20200410163147-594e756bea31/go.mod h1:1TqjTSzOxsLGIKfj0lK8EeCP7K1iUG65v09OM0/WG5E=
+k8s.io/kubernetes v1.13.0/go.mod h1:ocZa8+6APFNC2tX1DZASIbocyYT5jHzqFVsY5aoB7Jk=
 k8s.io/utils v0.0.0-20190801114015-581e00157fb1/go.mod h1:sZAwmy6armz5eXlNoLmJcl4F1QuKu7sr+mFQ0byX7Ew=
+k8s.io/utils v0.0.0-20201110183641-67b214c5f920/go.mod h1:jPW/WVKK9YHAvNhRxK0md/EJ228hCsBRufyofKtW8HA=
 rsc.io/binaryregexp v0.2.0/go.mod h1:qTv7/COck+e2FymRvadv62gMdZztPaShugOCi3I+8D8=
 rsc.io/quote/v3 v3.1.0/go.mod h1:yEA65RcK8LyAZtP9Kv3t0HmxON59tX3rD+tICJqUlj0=
 rsc.io/sampler v1.3.0/go.mod h1:T1hPZKmBbMNahiBKFy5HrXp6adAjACjK9JXDnKaTXpA=
+sigs.k8s.io/apiserver-network-proxy/konnectivity-client v0.0.15/go.mod h1:LEScyzhFmoF5pso/YSeBstl57mOzx9xlU9n85RGrDQg=
 sigs.k8s.io/structured-merge-diff v0.0.0-20190525122527-15d366b2352e/go.mod h1:wWxsB5ozmmv/SG7nM11ayaAW51xMvak/t1r0CSlcokI=
+sigs.k8s.io/structured-merge-diff/v4 v4.0.3/go.mod h1:bJZC9H9iH24zzfZ/41RGcq60oK1F7G282QMXDPYydCw=
 sigs.k8s.io/yaml v1.1.0/go.mod h1:UJmg0vDUVViEyp3mgSv9WPwZCDxu4rQW1olrI1uml+o=
+sigs.k8s.io/yaml v1.2.0/go.mod h1:yfXDCHCao9+ENCvLSE62v9VSji2MKu5jeNfTrofGhJc=

tun/netstack/tun.go

@@ -13,7 +13,9 @@ import (
 	"fmt"
 	"io"
 	"net"
+	"net/netip"
 	"os"
+	"regexp"
 	"strconv"
 	"strings"
 	"time"
@@ -28,8 +30,10 @@ import (
 	"gvisor.dev/gvisor/pkg/tcpip/network/ipv4"
 	"gvisor.dev/gvisor/pkg/tcpip/network/ipv6"
 	"gvisor.dev/gvisor/pkg/tcpip/stack"
+	"gvisor.dev/gvisor/pkg/tcpip/transport/icmp"
 	"gvisor.dev/gvisor/pkg/tcpip/transport/tcp"
 	"gvisor.dev/gvisor/pkg/tcpip/transport/udp"
+	"gvisor.dev/gvisor/pkg/waiter"
 )
 
 type netTun struct {
@@ -38,11 +42,14 @@ type netTun struct {
 	events         chan tun.Event
 	incomingPacket chan buffer.VectorisedView
 	mtu            int
-	dnsServers     []net.IP
+	dnsServers     []netip.Addr
 	hasV4, hasV6   bool
 }
-type endpoint netTun
+
-type Net netTun
+type (
+	endpoint netTun
+	Net      netTun
+)
 
 func (e *endpoint) Attach(dispatcher stack.NetworkDispatcher) {
 	e.dispatcher = dispatcher
@@ -83,6 +90,10 @@ func (e *endpoint) WritePackets(stack.RouteInfo, stack.PacketBufferList, tcpip.N
 	panic("not implemented")
 }
 
+func (e *endpoint) WriteRawPacket(*stack.PacketBuffer) tcpip.Error {
+	panic("not implemented")
+}
+
 func (*endpoint) ARPHardwareType() header.ARPHardwareType {
 	return header.ARPHardwareNone
 }
@@ -90,10 +101,10 @@ func (*endpoint) ARPHardwareType() header.ARPHardwareType {
 func (e *endpoint) AddHeader(tcpip.LinkAddress, tcpip.LinkAddress, tcpip.NetworkProtocolNumber, *stack.PacketBuffer) {
 }
 
-func CreateNetTUN(localAddresses, dnsServers []net.IP, mtu int) (tun.Device, *Net, error) {
+func CreateNetTUN(localAddresses, dnsServers []netip.Addr, mtu int) (tun.Device, *Net, error) {
 	opts := stack.Options{
 		NetworkProtocols:   []stack.NetworkProtocolFactory{ipv4.NewProtocol, ipv6.NewProtocol},
-		TransportProtocols: []stack.TransportProtocolFactory{tcp.NewProtocol, udp.NewProtocol},
+		TransportProtocols: []stack.TransportProtocolFactory{tcp.NewProtocol, udp.NewProtocol, icmp.NewProtocol6, icmp.NewProtocol4},
 		HandleLocal:        true,
 	}
 	dev := &netTun{
@@ -108,17 +119,23 @@ func CreateNetTUN(localAddresses, dnsServers []net.IP, mtu int) (tun.Device, *Ne
 		return nil, nil, fmt.Errorf("CreateNIC: %v", tcpipErr)
 	}
 	for _, ip := range localAddresses {
-		if ip4 := ip.To4(); ip4 != nil {
+		var protoNumber tcpip.NetworkProtocolNumber
-			tcpipErr = dev.stack.AddAddress(1, ipv4.ProtocolNumber, tcpip.Address(ip4))
+		if ip.Is4() {
-			if tcpipErr != nil {
+			protoNumber = ipv4.ProtocolNumber
-				return nil, nil, fmt.Errorf("AddAddress(%v): %v", ip4, tcpipErr)
+		} else if ip.Is6() {
-			}
+			protoNumber = ipv6.ProtocolNumber
+		}
+		protoAddr := tcpip.ProtocolAddress{
+			Protocol:          protoNumber,
+			AddressWithPrefix: tcpip.Address(ip.AsSlice()).WithPrefix(),
+		}
+		tcpipErr := dev.stack.AddProtocolAddress(1, protoAddr, stack.AddressProperties{})
+		if tcpipErr != nil {
+			return nil, nil, fmt.Errorf("AddProtocolAddress(%v): %v", ip, tcpipErr)
+		}
+		if ip.Is4() {
 			dev.hasV4 = true
-		} else {
+		} else if ip.Is6() {
-			tcpipErr = dev.stack.AddAddress(1, ipv6.ProtocolNumber, tcpip.Address(ip))
-			if tcpipErr != nil {
-				return nil, nil, fmt.Errorf("AddAddress(%v): %v", ip4, tcpipErr)
-			}
 			dev.hasV6 = true
 		}
 	}
@@ -190,62 +207,291 @@ func (tun *netTun) MTU() (int, error) {
 	return tun.mtu, nil
 }
 
-func convertToFullAddr(ip net.IP, port int) (tcpip.FullAddress, tcpip.NetworkProtocolNumber) {
+func convertToFullAddr(endpoint netip.AddrPort) (tcpip.FullAddress, tcpip.NetworkProtocolNumber) {
-	if ip4 := ip.To4(); ip4 != nil {
+	var protoNumber tcpip.NetworkProtocolNumber
-		return tcpip.FullAddress{
+	if endpoint.Addr().Is4() {
-			NIC:  1,
+		protoNumber = ipv4.ProtocolNumber
-			Addr: tcpip.Address(ip4),
-			Port: uint16(port),
-		}, ipv4.ProtocolNumber
 	} else {
-		return tcpip.FullAddress{
+		protoNumber = ipv6.ProtocolNumber
-			NIC:  1,
-			Addr: tcpip.Address(ip),
-			Port: uint16(port),
-		}, ipv6.ProtocolNumber
 	}
+	return tcpip.FullAddress{
+		NIC:  1,
+		Addr: tcpip.Address(endpoint.Addr().AsSlice()),
+		Port: endpoint.Port(),
+	}, protoNumber
+}
+
+func (net *Net) DialContextTCPAddrPort(ctx context.Context, addr netip.AddrPort) (*gonet.TCPConn, error) {
+	fa, pn := convertToFullAddr(addr)
+	return gonet.DialContextTCP(ctx, net.stack, fa, pn)
 }
 
 func (net *Net) DialContextTCP(ctx context.Context, addr *net.TCPAddr) (*gonet.TCPConn, error) {
 	if addr == nil {
-		panic("todo: deal with auto addr semantics for nil addr")
+		return net.DialContextTCPAddrPort(ctx, netip.AddrPort{})
 	}
-	fa, pn := convertToFullAddr(addr.IP, addr.Port)
+	ip, _ := netip.AddrFromSlice(addr.IP)
-	return gonet.DialContextTCP(ctx, net.stack, fa, pn)
+	return net.DialContextTCPAddrPort(ctx, netip.AddrPortFrom(ip, uint16(addr.Port)))
+}
+
+func (net *Net) DialTCPAddrPort(addr netip.AddrPort) (*gonet.TCPConn, error) {
+	fa, pn := convertToFullAddr(addr)
+	return gonet.DialTCP(net.stack, fa, pn)
 }
 
 func (net *Net) DialTCP(addr *net.TCPAddr) (*gonet.TCPConn, error) {
 	if addr == nil {
-		panic("todo: deal with auto addr semantics for nil addr")
+		return net.DialTCPAddrPort(netip.AddrPort{})
 	}
-	fa, pn := convertToFullAddr(addr.IP, addr.Port)
+	ip, _ := netip.AddrFromSlice(addr.IP)
-	return gonet.DialTCP(net.stack, fa, pn)
+	return net.DialTCPAddrPort(netip.AddrPortFrom(ip, uint16(addr.Port)))
+}
+
+func (net *Net) ListenTCPAddrPort(addr netip.AddrPort) (*gonet.TCPListener, error) {
+	fa, pn := convertToFullAddr(addr)
+	return gonet.ListenTCP(net.stack, fa, pn)
 }
 
 func (net *Net) ListenTCP(addr *net.TCPAddr) (*gonet.TCPListener, error) {
 	if addr == nil {
-		panic("todo: deal with auto addr semantics for nil addr")
+		return net.ListenTCPAddrPort(netip.AddrPort{})
 	}
-	fa, pn := convertToFullAddr(addr.IP, addr.Port)
+	ip, _ := netip.AddrFromSlice(addr.IP)
-	return gonet.ListenTCP(net.stack, fa, pn)
+	return net.ListenTCPAddrPort(netip.AddrPortFrom(ip, uint16(addr.Port)))
 }
 
-func (net *Net) DialUDP(laddr, raddr *net.UDPAddr) (*gonet.UDPConn, error) {
+func (net *Net) DialUDPAddrPort(laddr, raddr netip.AddrPort) (*gonet.UDPConn, error) {
 	var lfa, rfa *tcpip.FullAddress
 	var pn tcpip.NetworkProtocolNumber
-	if laddr != nil {
+	if laddr.IsValid() || laddr.Port() > 0 {
 		var addr tcpip.FullAddress
-		addr, pn = convertToFullAddr(laddr.IP, laddr.Port)
+		addr, pn = convertToFullAddr(laddr)
 		lfa = &addr
 	}
-	if raddr != nil {
+	if raddr.IsValid() || raddr.Port() > 0 {
 		var addr tcpip.FullAddress
-		addr, pn = convertToFullAddr(raddr.IP, raddr.Port)
+		addr, pn = convertToFullAddr(raddr)
 		rfa = &addr
 	}
 	return gonet.DialUDP(net.stack, lfa, rfa, pn)
 }
 
+func (net *Net) ListenUDPAddrPort(laddr netip.AddrPort) (*gonet.UDPConn, error) {
+	return net.DialUDPAddrPort(laddr, netip.AddrPort{})
+}
+
+func (net *Net) DialUDP(laddr, raddr *net.UDPAddr) (*gonet.UDPConn, error) {
+	var la, ra netip.AddrPort
+	if laddr != nil {
+		ip, _ := netip.AddrFromSlice(laddr.IP)
+		la = netip.AddrPortFrom(ip, uint16(laddr.Port))
+	}
+	if raddr != nil {
+		ip, _ := netip.AddrFromSlice(raddr.IP)
+		ra = netip.AddrPortFrom(ip, uint16(raddr.Port))
+	}
+	return net.DialUDPAddrPort(la, ra)
+}
+
+func (net *Net) ListenUDP(laddr *net.UDPAddr) (*gonet.UDPConn, error) {
+	return net.DialUDP(laddr, nil)
+}
+
+type PingConn struct {
+	laddr    PingAddr
+	raddr    PingAddr
+	wq       waiter.Queue
+	ep       tcpip.Endpoint
+	deadline *time.Timer
+}
+
+type PingAddr struct{ addr netip.Addr }
+
+func (ia PingAddr) String() string {
+	return ia.addr.String()
+}
+
+func (ia PingAddr) Network() string {
+	if ia.addr.Is4() {
+		return "ping4"
+	} else if ia.addr.Is6() {
+		return "ping6"
+	}
+	return "ping"
+}
+
+func (ia PingAddr) Addr() netip.Addr {
+	return ia.addr
+}
+
+func PingAddrFromAddr(addr netip.Addr) *PingAddr {
+	return &PingAddr{addr}
+}
+
+func (net *Net) DialPingAddr(laddr, raddr netip.Addr) (*PingConn, error) {
+	if !laddr.IsValid() && !raddr.IsValid() {
+		return nil, errors.New("ping dial: invalid address")
+	}
+	v6 := laddr.Is6() || raddr.Is6()
+	bind := laddr.IsValid()
+	if !bind {
+		if v6 {
+			laddr = netip.IPv6Unspecified()
+		} else {
+			laddr = netip.IPv4Unspecified()
+		}
+	}
+
+	tn := icmp.ProtocolNumber4
+	pn := ipv4.ProtocolNumber
+	if v6 {
+		tn = icmp.ProtocolNumber6
+		pn = ipv6.ProtocolNumber
+	}
+
+	pc := &PingConn{
+		laddr:    PingAddr{laddr},
+		deadline: time.NewTimer(time.Hour << 10),
+	}
+	pc.deadline.Stop()
+
+	ep, tcpipErr := net.stack.NewEndpoint(tn, pn, &pc.wq)
+	if tcpipErr != nil {
+		return nil, fmt.Errorf("ping socket: endpoint: %s", tcpipErr)
+	}
+	pc.ep = ep
+
+	if bind {
+		fa, _ := convertToFullAddr(netip.AddrPortFrom(laddr, 0))
+		if tcpipErr = pc.ep.Bind(fa); tcpipErr != nil {
+			return nil, fmt.Errorf("ping bind: %s", tcpipErr)
+		}
+	}
+
+	if raddr.IsValid() {
+		pc.raddr = PingAddr{raddr}
+		fa, _ := convertToFullAddr(netip.AddrPortFrom(raddr, 0))
+		if tcpipErr = pc.ep.Connect(fa); tcpipErr != nil {
+			return nil, fmt.Errorf("ping connect: %s", tcpipErr)
+		}
+	}
+
+	return pc, nil
+}
+
+func (net *Net) ListenPingAddr(laddr netip.Addr) (*PingConn, error) {
+	return net.DialPingAddr(laddr, netip.Addr{})
+}
+
+func (net *Net) DialPing(laddr, raddr *PingAddr) (*PingConn, error) {
+	var la, ra netip.Addr
+	if laddr != nil {
+		la = laddr.addr
+	}
+	if raddr != nil {
+		ra = raddr.addr
+	}
+	return net.DialPingAddr(la, ra)
+}
+
+func (net *Net) ListenPing(laddr *PingAddr) (*PingConn, error) {
+	var la netip.Addr
+	if laddr != nil {
+		la = laddr.addr
+	}
+	return net.ListenPingAddr(la)
+}
+
+func (pc *PingConn) LocalAddr() net.Addr {
+	return pc.laddr
+}
+
+func (pc *PingConn) RemoteAddr() net.Addr {
+	return pc.raddr
+}
+
+func (pc *PingConn) Close() error {
+	pc.deadline.Reset(0)
+	pc.ep.Close()
+	return nil
+}
+
+func (pc *PingConn) SetWriteDeadline(t time.Time) error {
+	return errors.New("not implemented")
+}
+
+func (pc *PingConn) WriteTo(p []byte, addr net.Addr) (n int, err error) {
+	var na netip.Addr
+	switch v := addr.(type) {
+	case *PingAddr:
+		na = v.addr
+	case *net.IPAddr:
+		na, _ = netip.AddrFromSlice(v.IP)
+	default:
+		return 0, fmt.Errorf("ping write: wrong net.Addr type")
+	}
+	if !((na.Is4() && pc.laddr.addr.Is4()) || (na.Is6() && pc.laddr.addr.Is6())) {
+		return 0, fmt.Errorf("ping write: mismatched protocols")
+	}
+
+	buf := buffer.NewViewFromBytes(p)
+	rdr := buf.Reader()
+	rfa, _ := convertToFullAddr(netip.AddrPortFrom(na, 0))
+	// won't block, no deadlines
+	n64, tcpipErr := pc.ep.Write(&rdr, tcpip.WriteOptions{
+		To: &rfa,
+	})
+	if tcpipErr != nil {
+		return int(n64), fmt.Errorf("ping write: %s", tcpipErr)
+	}
+
+	return int(n64), nil
+}
+
+func (pc *PingConn) Write(p []byte) (n int, err error) {
+	return pc.WriteTo(p, &pc.raddr)
+}
+
+func (pc *PingConn) ReadFrom(p []byte) (n int, addr net.Addr, err error) {
+	e, notifyCh := waiter.NewChannelEntry(nil)
+	pc.wq.EventRegister(&e, waiter.EventIn)
+	defer pc.wq.EventUnregister(&e)
+
+	select {
+	case <-pc.deadline.C:
+		return 0, nil, os.ErrDeadlineExceeded
+	case <-notifyCh:
+	}
+
+	w := tcpip.SliceWriter(p)
+
+	res, tcpipErr := pc.ep.Read(&w, tcpip.ReadOptions{
+		NeedRemoteAddr: true,
+	})
+	if tcpipErr != nil {
+		return 0, nil, fmt.Errorf("ping read: %s", tcpipErr)
+	}
+
+	remoteAddr, _ := netip.AddrFromSlice([]byte(res.RemoteAddr.Addr))
+	return res.Count, &PingAddr{remoteAddr}, nil
+}
+
+func (pc *PingConn) Read(p []byte) (n int, err error) {
+	n, _, err = pc.ReadFrom(p)
+	return
+}
+
+func (pc *PingConn) SetDeadline(t time.Time) error {
+	// pc.SetWriteDeadline is unimplemented
+
+	return pc.SetReadDeadline(t)
+}
+
+func (pc *PingConn) SetReadDeadline(t time.Time) error {
+	pc.deadline.Reset(t.Sub(time.Now()))
+	return nil
+}
+
 var (
 	errNoSuchHost                   = errors.New("no such host")
 	errLameReferral                 = errors.New("lame referral")
@@ -421,7 +667,7 @@ func dnsStreamRoundTrip(c net.Conn, id uint16, query dnsmessage.Question, b []by
 	return p, h, nil
 }
 
-func (tnet *Net) exchange(ctx context.Context, server net.IP, q dnsmessage.Question, timeout time.Duration) (dnsmessage.Parser, dnsmessage.Header, error) {
+func (tnet *Net) exchange(ctx context.Context, server netip.Addr, q dnsmessage.Question, timeout time.Duration) (dnsmessage.Parser, dnsmessage.Header, error) {
 	q.Class = dnsmessage.ClassINET
 	id, udpReq, tcpReq, err := newRequest(q)
 	if err != nil {
@@ -435,16 +681,19 @@ func (tnet *Net) exchange(ctx context.Context, server net.IP, q dnsmessage.Quest
 		var c net.Conn
 		var err error
 		if useUDP {
-			c, err = tnet.DialUDP(nil, &net.UDPAddr{IP: server, Port: 53})
+			c, err = tnet.DialUDPAddrPort(netip.AddrPort{}, netip.AddrPortFrom(server, 53))
 		} else {
-			c, err = tnet.DialContextTCP(ctx, &net.TCPAddr{IP: server, Port: 53})
+			c, err = tnet.DialContextTCPAddrPort(ctx, netip.AddrPortFrom(server, 53))
 		}
 
 		if err != nil {
 			return dnsmessage.Parser{}, dnsmessage.Header{}, err
 		}
 		if d, ok := ctx.Deadline(); ok && !d.IsZero() {
-			c.SetDeadline(d)
+			err := c.SetDeadline(d)
+			if err != nil {
+				return dnsmessage.Parser{}, dnsmessage.Header{}, err
+			}
 		}
 		var p dnsmessage.Parser
 		var h dnsmessage.Header
@@ -588,8 +837,8 @@ func (tnet *Net) LookupContextHost(ctx context.Context, host string) ([]string,
 			zlen = zidx
 		}
 	}
-	if ip := net.ParseIP(host[:zlen]); ip != nil {
+	if ip, err := netip.ParseAddr(host[:zlen]); err == nil {
-		return []string{host[:zlen]}, nil
+		return []string{ip.String()}, nil
 	}
 
 	if !isDomainName(host) {
@@ -600,7 +849,7 @@ func (tnet *Net) LookupContextHost(ctx context.Context, host string) ([]string,
 		server string
 		error
 	}
-	var addrsV4, addrsV6 []net.IP
+	var addrsV4, addrsV6 []netip.Addr
 	lanes := 0
 	if tnet.hasV4 {
 		lanes++
@@ -655,7 +904,7 @@ func (tnet *Net) LookupContextHost(ctx context.Context, host string) ([]string,
 					}
 					break loop
 				}
-				addrsV4 = append(addrsV4, net.IP(a.A[:]))
+				addrsV4 = append(addrsV4, netip.AddrFrom4(a.A))
 
 			case dnsmessage.TypeAAAA:
 				aaaa, err := result.p.AAAAResource()
@@ -667,7 +916,7 @@ func (tnet *Net) LookupContextHost(ctx context.Context, host string) ([]string,
 					}
 					break loop
 				}
-				addrsV6 = append(addrsV6, net.IP(aaaa.AAAA[:]))
+				addrsV6 = append(addrsV6, netip.AddrFrom16(aaaa.AAAA))
 
 			default:
 				if err := result.p.SkipAnswer(); err != nil {
@@ -683,7 +932,7 @@ func (tnet *Net) LookupContextHost(ctx context.Context, host string) ([]string,
 		}
 	}
 	// We don't do RFC6724. Instead just put V6 addresess first if an IPv6 address is enabled
-	var addrs []net.IP
+	var addrs []netip.Addr
 	if tnet.hasV6 {
 		addrs = append(addrsV6, addrsV4...)
 	} else {
@@ -720,44 +969,48 @@ func partialDeadline(now, deadline time.Time, addrsRemaining int) (time.Time, er
 	return now.Add(timeout), nil
 }
 
+var protoSplitter = regexp.MustCompile(`^(tcp|udp|ping)(4|6)?$`)
+
 func (tnet *Net) DialContext(ctx context.Context, network, address string) (net.Conn, error) {
 	if ctx == nil {
 		panic("nil context")
 	}
-	var acceptV4, acceptV6, useUDP bool
+	var acceptV4, acceptV6 bool
-	if len(network) == 3 {
+	matches := protoSplitter.FindStringSubmatch(network)
+	if matches == nil {
+		return nil, &net.OpError{Op: "dial", Err: net.UnknownNetworkError(network)}
+	} else if len(matches[2]) == 0 {
 		acceptV4 = true
 		acceptV6 = true
-	} else if len(network) == 4 {
+	} else {
-		acceptV4 = network[3] == '4'
+		acceptV4 = matches[2][0] == '4'
-		acceptV6 = network[3] == '6'
+		acceptV6 = !acceptV4
 	}
-	if !acceptV4 && !acceptV6 {
+	var host string
-		return nil, &net.OpError{Op: "dial", Err: net.UnknownNetworkError(network)}
+	var port int
-	}
+	if matches[1] == "ping" {
-	if network[:3] == "udp" {
+		host = address
-		useUDP = true
+	} else {
-	} else if network[:3] != "tcp" {
+		var sport string
-		return nil, &net.OpError{Op: "dial", Err: net.UnknownNetworkError(network)}
+		var err error
-	}
+		host, sport, err = net.SplitHostPort(address)
-	host, sport, err := net.SplitHostPort(address)
+		if err != nil {
-	if err != nil {
+			return nil, &net.OpError{Op: "dial", Err: err}
-		return nil, &net.OpError{Op: "dial", Err: err}
+		}
-	}
+		port, err = strconv.Atoi(sport)
-	port, err := strconv.Atoi(sport)
+		if err != nil || port < 0 || port > 65535 {
-	if err != nil || port < 0 || port > 65535 {
+			return nil, &net.OpError{Op: "dial", Err: errNumericPort}
-		return nil, &net.OpError{Op: "dial", Err: errNumericPort}
+		}
 	}
 	allAddr, err := tnet.LookupContextHost(ctx, host)
 	if err != nil {
 		return nil, &net.OpError{Op: "dial", Err: err}
 	}
-	var addrs []net.IP
+	var addrs []netip.AddrPort
 	for _, addr := range allAddr {
-		if strings.IndexByte(addr, ':') != -1 && acceptV6 {
+		ip, err := netip.ParseAddr(addr)
-			addrs = append(addrs, net.ParseIP(addr))
+		if err == nil && ((ip.Is4() && acceptV4) || (ip.Is6() && acceptV6)) {
-		} else if strings.IndexByte(addr, '.') != -1 && acceptV4 {
+			addrs = append(addrs, netip.AddrPortFrom(ip, uint16(port)))
-			addrs = append(addrs, net.ParseIP(addr))
 		}
 	}
 	if len(addrs) == 0 && len(allAddr) != 0 {
@@ -795,10 +1048,13 @@ func (tnet *Net) DialContext(ctx context.Context, network, address string) (net.
 		}
 
 		var c net.Conn
-		if useUDP {
+		switch matches[1] {
-			c, err = tnet.DialUDP(nil, &net.UDPAddr{IP: addr, Port: port})
+		case "tcp":
-		} else {
+			c, err = tnet.DialContextTCPAddrPort(dialCtx, addr)
-			c, err = tnet.DialContextTCP(dialCtx, &net.TCPAddr{IP: addr, Port: port})
+		case "udp":
+			c, err = tnet.DialUDPAddrPort(netip.AddrPort{}, addr)
+		case "ping":
+			c, err = tnet.DialPingAddr(netip.Addr{}, addr.Addr())
 		}
 		if err == nil {
 			return c, nil

tun/tun_darwin.go

@@ -141,7 +141,7 @@ func CreateTUN(name string, mtu int) (Device, error) {
 	if err == nil && name == "utun" {
 		fname := os.Getenv("WG_TUN_NAME_FILE")
 		if fname != "" {
-			os.WriteFile(fname, []byte(tun.(*NativeTun).name+"\n"), 0400)
+			os.WriteFile(fname, []byte(tun.(*NativeTun).name+"\n"), 0o400)
 		}
 	}
 
@@ -232,7 +232,6 @@ func (tun *NativeTun) Read(buff []byte, offset int) (int, error) {
 }
 
 func (tun *NativeTun) Write(buff []byte, offset int) (int, error) {
-
 	// reserve space for header
 
 	buff = buff[offset-4:]
@@ -282,7 +281,6 @@ func (tun *NativeTun) setMTU(n int) error {
 		unix.SOCK_DGRAM,
 		0,
 	)
-
 	if err != nil {
 		return err
 	}
@@ -306,7 +304,6 @@ func (tun *NativeTun) MTU() (int, error) {
 		unix.SOCK_DGRAM,
 		0,
 	)
-
 	if err != nil {
 		return 0, err
 	}

tun/tun_linux.go

@@ -232,7 +232,6 @@ func (tun *NativeTun) setMTU(n int) error {
 		unix.SOCK_DGRAM,
 		0,
 	)
-
 	if err != nil {
 		return err
 	}
@@ -269,7 +268,6 @@ func (tun *NativeTun) MTU() (int, error) {
 		unix.SOCK_DGRAM,
 		0,
 	)
-
 	if err != nil {
 		return 0, err
 	}

tun/tun_openbsd.go

@@ -133,7 +133,7 @@ func CreateTUN(name string, mtu int) (Device, error) {
 	if err == nil && name == "tun" {
 		fname := os.Getenv("WG_TUN_NAME_FILE")
 		if fname != "" {
-			os.WriteFile(fname, []byte(tun.(*NativeTun).name+"\n"), 0400)
+			os.WriteFile(fname, []byte(tun.(*NativeTun).name+"\n"), 0o400)
 		}
 	}
 
@@ -219,7 +219,6 @@ func (tun *NativeTun) Read(buff []byte, offset int) (int, error) {
 }
 
 func (tun *NativeTun) Write(buff []byte, offset int) (int, error) {
-
 	// reserve space for header
 
 	buff = buff[offset-4:]
@@ -274,7 +273,6 @@ func (tun *NativeTun) setMTU(n int) error {
 		unix.SOCK_DGRAM,
 		0,
 	)
-
 	if err != nil {
 		return err
 	}
@@ -309,7 +307,6 @@ func (tun *NativeTun) MTU() (int, error) {
 		unix.SOCK_DGRAM,
 		0,
 	)
-
 	if err != nil {
 		return 0, err
 	}

tun/tun_windows.go

@@ -16,7 +16,7 @@ import (
 
 	"golang.org/x/sys/windows"
 
-	"golang.zx2c4.com/wireguard/tun/wintun"
+	"golang.zx2c4.com/wintun"
 )
 
 const (
@@ -46,8 +46,10 @@ type NativeTun struct {
 	forcedMTU int
 }
 
-var WintunTunnelType = "WireGuard"
+var (
-var WintunStaticRequestedGUID *windows.GUID
+	WintunTunnelType          = "WireGuard"
+	WintunStaticRequestedGUID *windows.GUID
+)
 
 //go:linkname procyield runtime.procyield
 func procyield(cycles uint32)

tun/tuntest/tuntest.go

@@ -8,13 +8,13 @@ package tuntest
 import (
 	"encoding/binary"
 	"io"
-	"net"
+	"net/netip"
 	"os"
 
 	"golang.zx2c4.com/wireguard/tun"
 )
 
-func Ping(dst, src net.IP) []byte {
+func Ping(dst, src netip.Addr) []byte {
 	localPort := uint16(1337)
 	seq := uint16(0)
 
@@ -40,7 +40,7 @@ func checksum(buf []byte, initial uint16) uint16 {
 	return ^uint16(v)
 }
 
-func genICMPv4(payload []byte, dst, src net.IP) []byte {
+func genICMPv4(payload []byte, dst, src netip.Addr) []byte {
 	const (
 		icmpv4ProtocolNumber = 1
 		icmpv4Echo           = 8
@@ -70,8 +70,8 @@ func genICMPv4(payload []byte, dst, src net.IP) []byte {
 	binary.BigEndian.PutUint16(ip[ipv4TotalLenOffset:], length)
 	ip[8] = ttl
 	ip[9] = icmpv4ProtocolNumber
-	copy(ip[12:], src.To4())
+	copy(ip[12:], src.AsSlice())
-	copy(ip[16:], dst.To4())
+	copy(ip[16:], dst.AsSlice())
 	chksum = ^checksum(ip[:], 0)
 	binary.BigEndian.PutUint16(ip[ipv4ChecksumOffset:], chksum)
 

tun/wintun/dll_windows.go

@@ -1,98 +0,0 @@
-/* SPDX-License-Identifier: MIT
- *
- * Copyright (C) 2017-2021 WireGuard LLC. All Rights Reserved.
- */
-
-package wintun
-
-import (
-	"fmt"
-	"sync"
-	"sync/atomic"
-	"unsafe"
-
-	"golang.org/x/sys/windows"
-)
-
-func newLazyDLL(name string, onLoad func(d *lazyDLL)) *lazyDLL {
-	return &lazyDLL{Name: name, onLoad: onLoad}
-}
-
-func (d *lazyDLL) NewProc(name string) *lazyProc {
-	return &lazyProc{dll: d, Name: name}
-}
-
-type lazyProc struct {
-	Name string
-	mu   sync.Mutex
-	dll  *lazyDLL
-	addr uintptr
-}
-
-func (p *lazyProc) Find() error {
-	if atomic.LoadPointer((*unsafe.Pointer)(unsafe.Pointer(&p.addr))) != nil {
-		return nil
-	}
-	p.mu.Lock()
-	defer p.mu.Unlock()
-	if p.addr != 0 {
-		return nil
-	}
-
-	err := p.dll.Load()
-	if err != nil {
-		return fmt.Errorf("Error loading %v DLL: %w", p.dll.Name, err)
-	}
-	addr, err := p.nameToAddr()
-	if err != nil {
-		return fmt.Errorf("Error getting %v address: %w", p.Name, err)
-	}
-
-	atomic.StorePointer((*unsafe.Pointer)(unsafe.Pointer(&p.addr)), unsafe.Pointer(addr))
-	return nil
-}
-
-func (p *lazyProc) Addr() uintptr {
-	err := p.Find()
-	if err != nil {
-		panic(err)
-	}
-	return p.addr
-}
-
-type lazyDLL struct {
-	Name   string
-	mu     sync.Mutex
-	module windows.Handle
-	onLoad func(d *lazyDLL)
-}
-
-func (d *lazyDLL) Load() error {
-	if atomic.LoadPointer((*unsafe.Pointer)(unsafe.Pointer(&d.module))) != nil {
-		return nil
-	}
-	d.mu.Lock()
-	defer d.mu.Unlock()
-	if d.module != 0 {
-		return nil
-	}
-
-	const (
-		LOAD_LIBRARY_SEARCH_APPLICATION_DIR = 0x00000200
-		LOAD_LIBRARY_SEARCH_SYSTEM32        = 0x00000800
-	)
-	module, err := windows.LoadLibraryEx(d.Name, 0, LOAD_LIBRARY_SEARCH_APPLICATION_DIR|LOAD_LIBRARY_SEARCH_SYSTEM32)
-	if err != nil {
-		return fmt.Errorf("Unable to load library: %w", err)
-	}
-
-	atomic.StorePointer((*unsafe.Pointer)(unsafe.Pointer(&d.module)), unsafe.Pointer(module))
-	if d.onLoad != nil {
-		d.onLoad(d)
-	}
-	return nil
-}
-
-func (p *lazyProc) nameToAddr() (uintptr, error) {
-	return windows.GetProcAddress(p.dll.module, p.Name)
-}

tun/wintun/session_windows.go

@@ -1,90 +0,0 @@
-/* SPDX-License-Identifier: MIT
- *
- * Copyright (C) 2017-2021 WireGuard LLC. All Rights Reserved.
- */
-
-package wintun
-
-import (
-	"syscall"
-	"unsafe"
-
-	"golang.org/x/sys/windows"
-)
-
-type Session struct {
-	handle uintptr
-}
-
-const (
-	PacketSizeMax   = 0xffff    // Maximum packet size
-	RingCapacityMin = 0x20000   // Minimum ring capacity (128 kiB)
-	RingCapacityMax = 0x4000000 // Maximum ring capacity (64 MiB)
-)
-
-// Packet with data
-type Packet struct {
-	Next *Packet              // Pointer to next packet in queue
-	Size uint32               // Size of packet (max WINTUN_MAX_IP_PACKET_SIZE)
-	Data *[PacketSizeMax]byte // Pointer to layer 3 IPv4 or IPv6 packet
-}
-
-var (
-	procWintunAllocateSendPacket   = modwintun.NewProc("WintunAllocateSendPacket")
-	procWintunEndSession           = modwintun.NewProc("WintunEndSession")
-	procWintunGetReadWaitEvent     = modwintun.NewProc("WintunGetReadWaitEvent")
-	procWintunReceivePacket        = modwintun.NewProc("WintunReceivePacket")
-	procWintunReleaseReceivePacket = modwintun.NewProc("WintunReleaseReceivePacket")
-	procWintunSendPacket           = modwintun.NewProc("WintunSendPacket")
-	procWintunStartSession         = modwintun.NewProc("WintunStartSession")
-)
-
-func (wintun *Adapter) StartSession(capacity uint32) (session Session, err error) {
-	r0, _, e1 := syscall.Syscall(procWintunStartSession.Addr(), 2, uintptr(wintun.handle), uintptr(capacity), 0)
-	if r0 == 0 {
-		err = e1
-	} else {
-		session = Session{r0}
-	}
-	return
-}
-
-func (session Session) End() {
-	syscall.Syscall(procWintunEndSession.Addr(), 1, session.handle, 0, 0)
-	session.handle = 0
-}
-
-func (session Session) ReadWaitEvent() (handle windows.Handle) {
-	r0, _, _ := syscall.Syscall(procWintunGetReadWaitEvent.Addr(), 1, session.handle, 0, 0)
-	handle = windows.Handle(r0)
-	return
-}
-
-func (session Session) ReceivePacket() (packet []byte, err error) {
-	var packetSize uint32
-	r0, _, e1 := syscall.Syscall(procWintunReceivePacket.Addr(), 2, session.handle, uintptr(unsafe.Pointer(&packetSize)), 0)
-	if r0 == 0 {
-		err = e1
-		return
-	}
-	packet = unsafe.Slice((*byte)(unsafe.Pointer(r0)), packetSize)
-	return
-}
-
-func (session Session) ReleaseReceivePacket(packet []byte) {
-	syscall.Syscall(procWintunReleaseReceivePacket.Addr(), 2, session.handle, uintptr(unsafe.Pointer(&packet[0])), 0)
-}
-
-func (session Session) AllocateSendPacket(packetSize int) (packet []byte, err error) {
-	r0, _, e1 := syscall.Syscall(procWintunAllocateSendPacket.Addr(), 2, session.handle, uintptr(packetSize), 0)
-	if r0 == 0 {
-		err = e1
-		return
-	}
-	packet = unsafe.Slice((*byte)(unsafe.Pointer(r0)), packetSize)
-	return
-}
-
-func (session Session) SendPacket(packet []byte) {
-	syscall.Syscall(procWintunSendPacket.Addr(), 2, session.handle, uintptr(unsafe.Pointer(&packet[0])), 0)
-}

tun/wintun/wintun_windows.go

@@ -1,146 +0,0 @@
-/* SPDX-License-Identifier: MIT
- *
- * Copyright (C) 2017-2021 WireGuard LLC. All Rights Reserved.
- */
-
-package wintun
-
-import (
-	"log"
-	"runtime"
-	"syscall"
-	"unsafe"
-
-	"golang.org/x/sys/windows"
-)
-
-type loggerLevel int
-
-const (
-	logInfo loggerLevel = iota
-	logWarn
-	logErr
-)
-
-const AdapterNameMax = 128
-
-type Adapter struct {
-	handle uintptr
-}
-
-var (
-	modwintun                         = newLazyDLL("wintun.dll", setupLogger)
-	procWintunCreateAdapter           = modwintun.NewProc("WintunCreateAdapter")
-	procWintunOpenAdapter             = modwintun.NewProc("WintunOpenAdapter")
-	procWintunCloseAdapter            = modwintun.NewProc("WintunCloseAdapter")
-	procWintunDeleteDriver            = modwintun.NewProc("WintunDeleteDriver")
-	procWintunGetAdapterLUID          = modwintun.NewProc("WintunGetAdapterLUID")
-	procWintunGetRunningDriverVersion = modwintun.NewProc("WintunGetRunningDriverVersion")
-)
-
-type TimestampedWriter interface {
-	WriteWithTimestamp(p []byte, ts int64) (n int, err error)
-}
-
-func logMessage(level loggerLevel, timestamp uint64, msg *uint16) int {
-	if tw, ok := log.Default().Writer().(TimestampedWriter); ok {
-		tw.WriteWithTimestamp([]byte(log.Default().Prefix()+windows.UTF16PtrToString(msg)), (int64(timestamp)-116444736000000000)*100)
-	} else {
-		log.Println(windows.UTF16PtrToString(msg))
-	}
-	return 0
-}
-
-func setupLogger(dll *lazyDLL) {
-	var callback uintptr
-	if runtime.GOARCH == "386" || runtime.GOARCH == "arm" {
-		callback = windows.NewCallback(func(level loggerLevel, timestampLow, timestampHigh uint32, msg *uint16) int {
-			return logMessage(level, uint64(timestampHigh)<<32|uint64(timestampLow), msg)
-		})
-	} else if runtime.GOARCH == "amd64" || runtime.GOARCH == "arm64" {
-		callback = windows.NewCallback(logMessage)
-	}
-	syscall.Syscall(dll.NewProc("WintunSetLogger").Addr(), 1, callback, 0, 0)
-}
-
-func closeAdapter(wintun *Adapter) {
-	syscall.Syscall(procWintunCloseAdapter.Addr(), 1, wintun.handle, 0, 0)
-}
-
-// CreateAdapter creates a Wintun adapter. name is the cosmetic name of the adapter.
-// tunnelType represents the type of adapter and should be "Wintun". requestedGUID is
-// the GUID of the created network adapter, which then influences NLA generation
-// deterministically. If it is set to nil, the GUID is chosen by the system at random,
-// and hence a new NLA entry is created for each new adapter.
-func CreateAdapter(name string, tunnelType string, requestedGUID *windows.GUID) (wintun *Adapter, err error) {
-	var name16 *uint16
-	name16, err = windows.UTF16PtrFromString(name)
-	if err != nil {
-		return
-	}
-	var tunnelType16 *uint16
-	tunnelType16, err = windows.UTF16PtrFromString(tunnelType)
-	if err != nil {
-		return
-	}
-	r0, _, e1 := syscall.Syscall(procWintunCreateAdapter.Addr(), 3, uintptr(unsafe.Pointer(name16)), uintptr(unsafe.Pointer(tunnelType16)), uintptr(unsafe.Pointer(requestedGUID)))
-	if r0 == 0 {
-		err = e1
-		return
-	}
-	wintun = &Adapter{handle: r0}
-	runtime.SetFinalizer(wintun, closeAdapter)
-	return
-}
-
-// OpenAdapter opens an existing Wintun adapter by name.
-func OpenAdapter(name string) (wintun *Adapter, err error) {
-	var name16 *uint16
-	name16, err = windows.UTF16PtrFromString(name)
-	if err != nil {
-		return
-	}
-	r0, _, e1 := syscall.Syscall(procWintunOpenAdapter.Addr(), 1, uintptr(unsafe.Pointer(name16)), 0, 0)
-	if r0 == 0 {
-		err = e1
-		return
-	}
-	wintun = &Adapter{handle: r0}
-	runtime.SetFinalizer(wintun, closeAdapter)
-	return
-}
-
-// Close closes a Wintun adapter.
-func (wintun *Adapter) Close() (err error) {
-	runtime.SetFinalizer(wintun, nil)
-	r1, _, e1 := syscall.Syscall(procWintunCloseAdapter.Addr(), 1, wintun.handle, 0, 0)
-	if r1 == 0 {
-		err = e1
-	}
-	return
-}
-
-// Uninstall removes the driver from the system if no drivers are currently in use.
-func Uninstall() (err error) {
-	r1, _, e1 := syscall.Syscall(procWintunDeleteDriver.Addr(), 0, 0, 0, 0)
-	if r1 == 0 {
-		err = e1
-	}
-	return
-}
-
-// RunningVersion returns the version of the running Wintun driver.
-func RunningVersion() (version uint32, err error) {
-	r0, _, e1 := syscall.Syscall(procWintunGetRunningDriverVersion.Addr(), 0, 0, 0, 0)
-	version = uint32(r0)
-	if version == 0 {
-		err = e1
-	}
-	return
-}
-
-// LUID returns the LUID of the adapter.
-func (wintun *Adapter) LUID() (luid uint64) {
-	syscall.Syscall(procWintunGetAdapterLUID.Addr(), 2, uintptr(wintun.handle), uintptr(unsafe.Pointer(&luid)), 0)
-	return
-}

version.go

@@ -1,3 +1,3 @@
 package main
 
-const Version = "0.0.20211016"
+const Version = "0.0.20220316"