app/vppn
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases 8 Wiki Activity

wip: working

Browse Source
This commit is contained in:
jdl 2025-02-23 16:58:41 +01:00
parent 5cafd030ac
commit 3f7c42bb41
6 changed files with 115 additions and 87 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
peer/controlmessage.go
View File

@ -49,7 +49,6 @@ func parseControlMsg(srcIP byte, srcAddr netip.AddrPort, buf []byte) (any, error
// ----------------------------------------------------------------------------
type peerUpdateMsg struct {
PeerIP byte
Peer *m.Peer
}

2
peer/hubpoller.go
View File

@ -96,7 +96,7 @@ func (hp *hubPoller) applyNetworkState(state m.NetworkState) {
for i, peer := range state.Peers {
if i != int(hp.localIP) {
if peer == nil || peer.Version != hp.versions[i] {
hp.handleControlMsg(byte(i), peerUpdateMsg{PeerIP: byte(i), Peer: state.Peers[i]})
hp.handleControlMsg(byte(i), peerUpdateMsg{Peer: state.Peers[i]})
if peer != nil {
hp.versions[i] = peer.Version
}

2
peer/mcwriter.go
View File

@ -44,7 +44,7 @@ func runMCWriter(localIP byte, signingKey []byte) {
log.Fatalf("Failed to bind to multicast address: %v", err)
}
for range time.Tick(16 * time.Second) {
for range time.Tick(8 * time.Second) {
_, err := conn.WriteToUDP(discoveryPacket, multicastAddr)
if err != nil {
log.Printf("[MCWriter] Failed to write multicast: %v", err)

90
peer/peerstates.go
View File

@ -12,12 +12,7 @@ import (
)
type peerState interface {
OnPeerUpdate(*m.Peer) peerState
OnSyn(controlMsg[packetSyn]) peerState
OnAck(controlMsg[packetAck])
OnProbe(controlMsg[packetProbe]) peerState
OnLocalDiscovery(controlMsg[packetLocalDiscovery])
OnPingTimer() peerState
OnMsg(raw any) peerState
}
// ----------------------------------------------------------------------------
@ -26,6 +21,7 @@ type pState struct {
// Output.
publish func(remotePeer)
sendControlPacket func(remotePeer, marshaller)
pingTimer *time.Ticker
// Immutable data.
localIP byte
@ -147,9 +143,20 @@ func (s *pState) Send(peer remotePeer, pkt marshaller) {
type stateDisconnected struct{ *pState }
func enterStateDisconnected(s *pState) peerState {
s.pingTimer.Stop()
return &stateDisconnected{pState: s}
}
func (s *stateDisconnected) OnMsg(raw any) peerState {
switch msg := raw.(type) {
case peerUpdateMsg:
return s.OnPeerUpdate(msg.Peer)
default:
// TODO: Log.
return s
}
}
func (s *stateDisconnected) OnSyn(controlMsg[packetSyn]) peerState { return s }
func (s *stateDisconnected) OnAck(controlMsg[packetAck]) {}
func (s *stateDisconnected) OnProbe(controlMsg[packetProbe]) peerState { return s }
@ -166,9 +173,26 @@ type stateServer struct {
func enterStateServer(s *pState) peerState {
s.logf("==> Server")
s.pingTimer.Reset(pingInterval)
return &stateServer{stateDisconnected: &stateDisconnected{pState: s}}
}
func (s *stateServer) OnMsg(rawMsg any) peerState {
switch msg := rawMsg.(type) {
case peerUpdateMsg:
return s.OnPeerUpdate(msg.Peer)
case controlMsg[packetSyn]:
return s.OnSyn(msg)
case controlMsg[packetProbe]:
return s.OnProbe(msg)
case pingTimerMsg:
return s.OnPingTimer()
default:
// TODO: Log
return s
}
}
func (s *stateServer) OnSyn(msg controlMsg[packetSyn]) peerState {
s.lastSeen = time.Now()
p := msg.Packet
@ -236,6 +260,7 @@ type stateClientDirect struct {
func enterStateClientDirect(s *pState) peerState {
s.logf("==> ClientDirect")
s.pingTimer.Reset(pingInterval)
return newStateClientDirect(s)
}
@ -255,6 +280,24 @@ func newStateClientDirect(s *pState) *stateClientDirect {
return state
}
func (s *stateClientDirect) OnMsg(raw any) peerState {
switch msg := raw.(type) {
case peerUpdateMsg:
return s.OnPeerUpdate(msg.Peer)
case controlMsg[packetAck]:
s.OnAck(msg)
return s
case pingTimerMsg:
if next := s.onPingTimer(); next != nil {
return next
}
return s
default:
// TODO: Log
return s
}
}
func (s *stateClientDirect) OnAck(msg controlMsg[packetAck]) {
if msg.Packet.TraceID != s.syn.TraceID {
return
@ -271,13 +314,6 @@ func (s *stateClientDirect) OnAck(msg controlMsg[packetAck]) {
s.pubAddrs.Store(msg.Packet.ToAddr)
}
func (s *stateClientDirect) OnPingTimer() peerState {
if next := s.onPingTimer(); next != nil {
return next
}
return s
}
func (s *stateClientDirect) onPingTimer() peerState {
if time.Since(s.lastSeen) > timeoutInterval {
if s.staged.Up {
@ -297,21 +333,44 @@ func (s *stateClientDirect) onPingTimer() peerState {
type stateClientRelayed struct {
*stateClientDirect
ack packetAck
probes map[uint64]netip.AddrPort
localDiscoveryAddr netip.AddrPort
probes map[uint64]netip.AddrPort // TODO: something better
localDiscoveryAddr netip.AddrPort // TODO: Remove
}
func enterStateClientRelayed(s *pState) peerState {
s.logf("==> ClientRelayed")
s.pingTimer.Reset(pingInterval)
return &stateClientRelayed{
stateClientDirect: newStateClientDirect(s),
probes: map[uint64]netip.AddrPort{},
}
}
func (s *stateClientRelayed) OnMsg(raw any) peerState {
switch msg := raw.(type) {
case peerUpdateMsg:
return s.OnPeerUpdate(msg.Peer)
case controlMsg[packetAck]:
s.OnAck(msg)
return s
case controlMsg[packetProbe]:
return s.OnProbe(msg)
case controlMsg[packetLocalDiscovery]:
s.OnLocalDiscovery(msg)
return s
case pingTimerMsg:
return s.OnPingTimer()
default:
// TODO: Log
return s
}
}
func (s *stateClientRelayed) OnAck(msg controlMsg[packetAck]) {
s.ack = msg.Packet
s.stateClientDirect.OnAck(msg)
// TODO: Send probes now.
}
func (s *stateClientRelayed) OnProbe(msg controlMsg[packetProbe]) peerState {
@ -330,6 +389,7 @@ func (s *stateClientRelayed) OnLocalDiscovery(msg controlMsg[packetLocalDiscover
// The source port will be the multicast port, so we'll have to
// construct the correct address using the peer's listed port.
s.localDiscoveryAddr = netip.AddrPortFrom(msg.SrcAddr.Addr(), s.peer.Port)
// TODO: s.sendProbeTo(s.localDiscoveryAddr)
}
func (s *stateClientRelayed) OnPingTimer() peerState {

41
peer/peerstates_test.go
View File

@ -34,6 +34,7 @@ func NewPeerStateTestHarness() *PeerStateTestHarness {
sendControlPacket: func(rp remotePeer, pkt marshaller) {
h.Sent = append(h.Sent, PeerStateControlMsg{rp, pkt})
},
pingTimer: time.NewTicker(pingInterval),
localIP: 2,
remoteIP: 3,
privKey: keys.PrivKey,
@ -49,27 +50,19 @@ func NewPeerStateTestHarness() *PeerStateTestHarness {
}
func (h *PeerStateTestHarness) PeerUpdate(p *m.Peer) {
if s := h.State.OnPeerUpdate(p); s != nil {
h.State = s
}
h.State = h.State.OnMsg(peerUpdateMsg{p})
}
func (h *PeerStateTestHarness) OnSyn(msg controlMsg[packetSyn]) {
if s := h.State.OnSyn(msg); s != nil {
h.State = s
}
h.State = h.State.OnMsg(msg)
}
func (h *PeerStateTestHarness) OnProbe(msg controlMsg[packetProbe]) {
if s := h.State.OnProbe(msg); s != nil {
h.State = s
}
h.State = h.State.OnMsg(msg)
}
func (h *PeerStateTestHarness) OnPingTimer() {
if s := h.State.OnPingTimer(); s != nil {
h.State = s
}
h.State = h.State.OnMsg(pingTimerMsg{})
}
func (h *PeerStateTestHarness) ConfigServer_Public(t *testing.T) *stateServer {
@ -202,7 +195,7 @@ func TestStateServer_directSyn(t *testing.T) {
},
}
h.State.OnSyn(synMsg)
h.State = h.State.OnMsg(synMsg)
assertEqual(t, len(h.Sent), 1)
ack := assertType[packetAck](t, h.Sent[0].Packet)
@ -233,7 +226,7 @@ func TestStateServer_relayedSyn(t *testing.T) {
synMsg.Packet.PossibleAddrs[0] = addrPort4(1, 1, 1, 3, 300)
synMsg.Packet.PossibleAddrs[1] = addrPort4(2, 2, 2, 3, 300)
h.State.OnSyn(synMsg)
h.State = h.State.OnMsg(synMsg)
assertEqual(t, len(h.Sent), 3)
@ -261,7 +254,7 @@ func TestStateServer_onProbe(t *testing.T) {
Packet: packetProbe{TraceID: newTraceID()},
}
h.State.OnProbe(probeMsg)
h.State = h.State.OnMsg(probeMsg)
assertEqual(t, len(h.Sent), 1)
@ -285,7 +278,7 @@ func TestStateServer_OnPingTimer_timeout(t *testing.T) {
},
}
h.State.OnSyn(synMsg)
h.State = h.State.OnMsg(synMsg)
assertEqual(t, len(h.Sent), 1)
assertEqual(t, h.Published.Up, true)
@ -314,7 +307,7 @@ func TestStateClientDirect_OnAck(t *testing.T) {
ack := controlMsg[packetAck]{
Packet: packetAck{TraceID: syn.TraceID},
}
h.State.OnAck(ack)
h.State = h.State.OnMsg(ack)
assertEqual(t, h.Published.Up, true)
}
@ -331,7 +324,7 @@ func TestStateClientDirect_OnAck_incorrectTraceID(t *testing.T) {
ack := controlMsg[packetAck]{
Packet: packetAck{TraceID: syn.TraceID + 1},
}
h.State.OnAck(ack)
h.State = h.State.OnMsg(ack)
assertEqual(t, h.Published.Up, false)
}
@ -366,7 +359,7 @@ func TestStateClientDirect_OnPingTimer_timeout(t *testing.T) {
ack := controlMsg[packetAck]{
Packet: packetAck{TraceID: syn.TraceID},
}
h.State.OnAck(ack)
h.State = h.State.OnMsg(ack)
assertEqual(t, h.Published.Up, true)
state := assertType[*stateClientDirect](t, h.State)
@ -395,7 +388,7 @@ func TestStateClientRelayed_OnAck(t *testing.T) {
ack := controlMsg[packetAck]{
Packet: packetAck{TraceID: syn.TraceID},
}
h.State.OnAck(ack)
h.State = h.State.OnMsg(ack)
assertEqual(t, h.Published.Up, true)
}
@ -429,11 +422,11 @@ func TestStateClientRelayed_OnPingTimer_withAddrs(t *testing.T) {
ack.Packet.PossibleAddrs[0] = addrPort4(1, 1, 1, 1, 300)
ack.Packet.PossibleAddrs[1] = addrPort4(1, 1, 1, 2, 300)
h.State.OnAck(ack)
h.State = h.State.OnMsg(ack)
// Add a local discovery address. Note that the port will be configured port
// and no the one provided here.
h.State.OnLocalDiscovery(controlMsg[packetLocalDiscovery]{
h.State = h.State.OnMsg(controlMsg[packetLocalDiscovery]{
SrcIP: 3,
SrcAddr: addrPort4(2, 2, 2, 3, 300),
})
@ -462,7 +455,7 @@ func TestStateClientRelayed_OnPingTimer_timeout(t *testing.T) {
ack := controlMsg[packetAck]{
Packet: packetAck{TraceID: syn.TraceID},
}
h.State.OnAck(ack)
h.State = h.State.OnMsg(ack)
assertEqual(t, h.Published.Up, true)
state := assertType[*stateClientRelayed](t, h.State)
@ -499,7 +492,7 @@ func TestStateClientRelayed_OnProbe_upgradeDirect(t *testing.T) {
ack.Packet.PossibleAddrs[0] = addrPort4(1, 1, 1, 1, 300)
ack.Packet.PossibleAddrs[1] = addrPort4(1, 1, 1, 2, 300)
h.State.OnAck(ack)
h.State = h.State.OnMsg(ack)
h.OnPingTimer()
probe := assertType[packetProbe](t, h.Sent[2].Packet)

48
peer/peersuper.go
View File

@ -1,8 +1,6 @@
package peer
import (
"log"
"math/rand"
"net/netip"
"sync"
"sync/atomic"
@ -44,6 +42,7 @@ func newSupervisor(
state := &pState{
publish: s.publish,
sendControlPacket: s.send,
pingTimer: time.NewTicker(timeoutInterval),
localIP: routes.LocalIP,
remoteIP: byte(i),
privKey: privKey,
@ -55,7 +54,7 @@ func newSupervisor(
MaxWaitCount: 1,
}),
}
s.peers[i] = newPeerSuper(state)
s.peers[i] = newPeerSuper(state, state.pingTimer)
}
return s
@ -105,7 +104,7 @@ func (s *supervisor) ensureRelay() {
return
}
// TODO: Random selection?
// TODO: Random selection? Something else?
for _, peer := range s.staged.Peers {
if peer.Up && peer.Direct && peer.Relay {
s.staged.RelayIP = peer.IP
@ -119,12 +118,14 @@ func (s *supervisor) ensureRelay() {
type peerSuper struct {
messages chan any
state peerState
pingTimer *time.Ticker
}
func newPeerSuper(state *pState) *peerSuper {
func newPeerSuper(state *pState, pingTimer *time.Ticker) *peerSuper {
return &peerSuper{
messages: make(chan any, 8),
state: state.OnPeerUpdate(nil),
pingTimer: pingTimer,
}
}
@ -136,37 +137,12 @@ func (s *peerSuper) HandleControlMsg(msg any) {
}
func (s *peerSuper) Run() {
go func() {
// Randomize ping timers.
time.Sleep(time.Duration(rand.Intn(4000)) * time.Millisecond)
for range time.Tick(pingInterval) {
s.messages <- pingTimerMsg{}
}
}()
for rawMsg := range s.messages {
switch msg := rawMsg.(type) {
case peerUpdateMsg:
s.state = s.state.OnPeerUpdate(msg.Peer)
case controlMsg[packetSyn]:
s.state = s.state.OnSyn(msg)
case controlMsg[packetAck]:
s.state.OnAck(msg)
case controlMsg[packetProbe]:
s.state = s.state.OnProbe(msg)
case controlMsg[packetLocalDiscovery]:
s.state.OnLocalDiscovery(msg)
case pingTimerMsg:
s.state = s.state.OnPingTimer()
default:
log.Printf("WARNING: unknown message type: %+v", msg)
for {
select {
case <-s.pingTimer.C:
s.state = s.state.OnMsg(pingTimerMsg{})
case raw := <-s.messages:
s.state = s.state.OnMsg(raw)
}
}
}