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boundif: introduce API for socket binding

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This commit is contained in:
Jason A. Donenfeld
2019-03-03 05:01:06 +01:00
parent 69f0fe67b6
commit b8e85267cf
8 changed files with 155 additions and 21 deletions
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20
device/conn_linux.go
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@@ -63,7 +63,7 @@ func (endpoint *NativeEndpoint) dst6() *unix.SockaddrInet6 {
return (*unix.SockaddrInet6)(unsafe.Pointer(&endpoint.dst[0]))
}
type NativeBind struct {
type nativeBind struct {
sock4 int
sock6 int
netlinkSock int
@@ -72,7 +72,7 @@ type NativeBind struct {
}
var _ Endpoint = (*NativeEndpoint)(nil)
var _ Bind = (*NativeBind)(nil)
var _ Bind = (*nativeBind)(nil)
func CreateEndpoint(s string) (Endpoint, error) {
var end NativeEndpoint
@@ -127,9 +127,9 @@ func createNetlinkRouteSocket() (int, error) {
}
func CreateBind(port uint16, device *Device) (*NativeBind, uint16, error) {
func CreateBind(port uint16, device *Device) (*nativeBind, uint16, error) {
var err error
var bind NativeBind
var bind nativeBind
var newPort uint16
bind.netlinkSock, err = createNetlinkRouteSocket()
@@ -176,7 +176,7 @@ func CreateBind(port uint16, device *Device) (*NativeBind, uint16, error) {
return &bind, port, nil
}
func (bind *NativeBind) SetMark(value uint32) error {
func (bind *nativeBind) SetMark(value uint32) error {
if bind.sock6 != -1 {
err := unix.SetsockoptInt(
bind.sock6,
@@ -213,7 +213,7 @@ func closeUnblock(fd int) error {
return unix.Close(fd)
}
func (bind *NativeBind) Close() error {
func (bind *nativeBind) Close() error {
var err1, err2, err3 error
if bind.sock6 != -1 {
err1 = closeUnblock(bind.sock6)
@@ -232,7 +232,7 @@ func (bind *NativeBind) Close() error {
return err3
}
func (bind *NativeBind) ReceiveIPv6(buff []byte) (int, Endpoint, error) {
func (bind *nativeBind) ReceiveIPv6(buff []byte) (int, Endpoint, error) {
var end NativeEndpoint
if bind.sock6 == -1 {
return 0, nil, syscall.EAFNOSUPPORT
@@ -245,7 +245,7 @@ func (bind *NativeBind) ReceiveIPv6(buff []byte) (int, Endpoint, error) {
return n, &end, err
}
func (bind *NativeBind) ReceiveIPv4(buff []byte) (int, Endpoint, error) {
func (bind *nativeBind) ReceiveIPv4(buff []byte) (int, Endpoint, error) {
var end NativeEndpoint
if bind.sock4 == -1 {
return 0, nil, syscall.EAFNOSUPPORT
@@ -258,7 +258,7 @@ func (bind *NativeBind) ReceiveIPv4(buff []byte) (int, Endpoint, error) {
return n, &end, err
}
func (bind *NativeBind) Send(buff []byte, end Endpoint) error {
func (bind *nativeBind) Send(buff []byte, end Endpoint) error {
nend := end.(*NativeEndpoint)
if !nend.isV6 {
if bind.sock4 == -1 {
@@ -592,7 +592,7 @@ func receive6(sock int, buff []byte, end *NativeEndpoint) (int, error) {
return size, nil
}
func (bind *NativeBind) routineRouteListener(device *Device) {
func (bind *nativeBind) routineRouteListener(device *Device) {
type peerEndpointPtr struct {
peer *Peer
endpoint *Endpoint