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Use an interface for udp conns (#901)

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This commit is contained in:
Nate Brown
2023-06-14 10:48:52 -05:00
committed by GitHub
parent 928731acfe
commit 3bbf5f4e67
17 changed files with 95 additions and 68 deletions
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22
udp/udp_tester.go
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@@ -36,7 +36,7 @@ func (u *Packet) Copy() *Packet {
return n
}
type Conn struct {
type TesterConn struct {
Addr *Addr
RxPackets chan *Packet // Packets to receive into nebula
@@ -45,8 +45,8 @@ type Conn struct {
l *logrus.Logger
}
func NewListener(l *logrus.Logger, ip net.IP, port int, _ bool, _ int) (*Conn, error) {
return &Conn{
func NewListener(l *logrus.Logger, ip net.IP, port int, _ bool, _ int) (Conn, error) {
return &TesterConn{
Addr: &Addr{ip, uint16(port)},
RxPackets: make(chan *Packet, 10),
TxPackets: make(chan *Packet, 10),
@@ -57,7 +57,7 @@ func NewListener(l *logrus.Logger, ip net.IP, port int, _ bool, _ int) (*Conn, e
// Send will place a UdpPacket onto the receive queue for nebula to consume
// this is an encrypted packet or a handshake message in most cases
// packets were transmitted from another nebula node, you can send them with Tun.Send
func (u *Conn) Send(packet *Packet) {
func (u *TesterConn) Send(packet *Packet) {
h := &header.H{}
if err := h.Parse(packet.Data); err != nil {
panic(err)
@@ -74,7 +74,7 @@ func (u *Conn) Send(packet *Packet) {
// Get will pull a UdpPacket from the transmit queue
// nebula meant to send this message on the network, it will be encrypted
// packets were ingested from the tun side (in most cases), you can send them with Tun.Send
func (u *Conn) Get(block bool) *Packet {
func (u *TesterConn) Get(block bool) *Packet {
if block {
return <-u.TxPackets
}
@@ -91,7 +91,7 @@ func (u *Conn) Get(block bool) *Packet {
// Below this is boilerplate implementation to make nebula actually work
//********************************************************************************************************************//
func (u *Conn) WriteTo(b []byte, addr *Addr) error {
func (u *TesterConn) WriteTo(b []byte, addr *Addr) error {
p := &Packet{
Data: make([]byte, len(b), len(b)),
FromIp: make([]byte, 16),
@@ -108,7 +108,7 @@ func (u *Conn) WriteTo(b []byte, addr *Addr) error {
return nil
}
func (u *Conn) ListenOut(r EncReader, lhf LightHouseHandlerFunc, cache *firewall.ConntrackCacheTicker, q int) {
func (u *TesterConn) ListenOut(r EncReader, lhf LightHouseHandlerFunc, cache *firewall.ConntrackCacheTicker, q int) {
plaintext := make([]byte, MTU)
h := &header.H{}
fwPacket := &firewall.Packet{}
@@ -126,17 +126,17 @@ func (u *Conn) ListenOut(r EncReader, lhf LightHouseHandlerFunc, cache *firewall
}
}
func (u *Conn) ReloadConfig(*config.C) {}
func (u *TesterConn) ReloadConfig(*config.C) {}
func NewUDPStatsEmitter(_ []*Conn) func() {
func NewUDPStatsEmitter(_ []Conn) func() {
// No UDP stats for non-linux
return func() {}
}
func (u *Conn) LocalAddr() (*Addr, error) {
func (u *TesterConn) LocalAddr() (*Addr, error) {
return u.Addr, nil
}
func (u *Conn) Rebind() error {
func (u *TesterConn) Rebind() error {
return nil
}