Exchange proxy mode via signal (#727)

Before defining if we will use direct or proxy connection we will exchange a 
message with the other peer if the modes match we keep the decision 
from the shouldUseProxy function otherwise we skip using direct connection.

Added a feature support message to the signal protocol
This commit is contained in:
Maycon Santos 2023-03-16 16:46:17 +01:00 committed by GitHub
parent 6143b819c5
commit 731d3ae464
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
9 changed files with 463 additions and 54 deletions

View File

@ -353,6 +353,10 @@ func signalCandidate(candidate ice.Candidate, myKey wgtypes.Key, remoteKey wgtyp
return nil
}
func sendSignal(message *sProto.Message, s signal.Client) error {
return s.Send(message)
}
// SignalOfferAnswer signals either an offer or an answer to remote peer
func SignalOfferAnswer(offerAnswer peer.OfferAnswer, myKey wgtypes.Key, remoteKey wgtypes.Key, s signal.Client, isAnswer bool) error {
var t sProto.Body_Type
@ -369,6 +373,10 @@ func SignalOfferAnswer(offerAnswer peer.OfferAnswer, myKey wgtypes.Key, remoteKe
if err != nil {
return err
}
// indicates message support in gRPC
msg.Body.FeaturesSupported = []uint32{signal.DirectCheck}
err = s.Send(msg)
if err != nil {
return err
@ -827,6 +835,9 @@ func (e Engine) createPeerConn(pubKey string, allowedIPs string) (*peer.Conn, er
peerConn.SetSignalCandidate(signalCandidate)
peerConn.SetSignalOffer(signalOffer)
peerConn.SetSignalAnswer(signalAnswer)
peerConn.SetSendSignalMessage(func(message *sProto.Message) error {
return sendSignal(message, e.signal)
})
return peerConn, nil
}
@ -850,6 +861,9 @@ func (e *Engine) receiveSignalEvents() {
if err != nil {
return err
}
conn.RegisterProtoSupportMeta(msg.Body.GetFeaturesSupported())
conn.OnRemoteOffer(peer.OfferAnswer{
IceCredentials: peer.IceCredentials{
UFrag: remoteCred.UFrag,
@ -863,6 +877,9 @@ func (e *Engine) receiveSignalEvents() {
if err != nil {
return err
}
conn.RegisterProtoSupportMeta(msg.Body.GetFeaturesSupported())
conn.OnRemoteAnswer(peer.OfferAnswer{
IceCredentials: peer.IceCredentials{
UFrag: remoteCred.UFrag,
@ -878,6 +895,19 @@ func (e *Engine) receiveSignalEvents() {
return err
}
conn.OnRemoteCandidate(candidate)
case sProto.Body_MODE:
protoMode := msg.GetBody().GetMode()
if protoMode == nil {
return fmt.Errorf("received an empty mode message")
}
err := conn.OnModeMessage(peer.ModeMessage{
Direct: protoMode.GetDirect(),
})
if err != nil {
log.Errorf("failed processing a mode message -> %s", err)
return err
}
}
return nil

View File

@ -2,6 +2,7 @@ package peer
import (
"context"
"fmt"
"net"
"strings"
"sync"
@ -14,6 +15,8 @@ import (
"github.com/netbirdio/netbird/client/internal/proxy"
"github.com/netbirdio/netbird/iface"
"github.com/netbirdio/netbird/version"
signal "github.com/netbirdio/netbird/signal/client"
sProto "github.com/netbirdio/netbird/signal/proto"
)
// ConnConfig is a peer Connection configuration
@ -69,8 +72,9 @@ type Conn struct {
// signalCandidate is a handler function to signal remote peer about local connection candidate
signalCandidate func(candidate ice.Candidate) error
// signalOffer is a handler function to signal remote peer our connection offer (credentials)
signalOffer func(OfferAnswer) error
signalAnswer func(OfferAnswer) error
signalOffer func(OfferAnswer) error
signalAnswer func(OfferAnswer) error
sendSignalMessage func(message *sProto.Message) error
// remoteOffersCh is a channel used to wait for remote credentials to proceed with the connection
remoteOffersCh chan OfferAnswer
@ -85,7 +89,20 @@ type Conn struct {
statusRecorder *Status
proxy proxy.Proxy
proxy proxy.Proxy
remoteModeCh chan ModeMessage
meta meta
}
// meta holds meta information about a connection
type meta struct {
protoSupport signal.FeaturesSupport
}
// ModeMessage represents a connection mode chosen by the peer
type ModeMessage struct {
// Direct indicates that it decided to use a direct connection
Direct bool
}
// GetConf returns the connection config
@ -109,6 +126,7 @@ func NewConn(config ConnConfig, statusRecorder *Status) (*Conn, error) {
remoteOffersCh: make(chan OfferAnswer),
remoteAnswerCh: make(chan OfferAnswer),
statusRecorder: statusRecorder,
remoteModeCh: make(chan ModeMessage, 1),
}, nil
}
@ -366,15 +384,7 @@ func (conn *Conn) startProxy(remoteConn net.Conn, remoteWgPort int) error {
}
peerState := State{PubKey: conn.config.Key}
useProxy := shouldUseProxy(pair)
var p proxy.Proxy
if useProxy {
p = proxy.NewWireguardProxy(conn.config.ProxyConfig)
peerState.Direct = false
} else {
p = proxy.NewNoProxy(conn.config.ProxyConfig, remoteWgPort)
peerState.Direct = true
}
p := conn.getProxyWithMessageExchange(pair, remoteWgPort)
conn.proxy = p
err = p.Start(remoteConn)
if err != nil {
@ -390,6 +400,7 @@ func (conn *Conn) startProxy(remoteConn net.Conn, remoteWgPort int) error {
if pair.Local.Type() == ice.CandidateTypeRelay || pair.Remote.Type() == ice.CandidateTypeRelay {
peerState.Relayed = true
}
peerState.Direct = p.Type() == proxy.TypeNoProxy
err = conn.statusRecorder.UpdatePeerState(peerState)
if err != nil {
@ -399,6 +410,63 @@ func (conn *Conn) startProxy(remoteConn net.Conn, remoteWgPort int) error {
return nil
}
func (conn *Conn) getProxyWithMessageExchange(pair *ice.CandidatePair, remoteWgPort int) proxy.Proxy {
useProxy := shouldUseProxy(pair)
localDirectMode := !useProxy
remoteDirectMode := localDirectMode
if conn.meta.protoSupport.DirectCheck {
go conn.sendLocalDirectMode(localDirectMode)
// will block until message received or timeout
remoteDirectMode = conn.receiveRemoteDirectMode()
}
if localDirectMode && remoteDirectMode {
log.Debugf("using WireGuard direct mode with peer %s", conn.config.Key)
return proxy.NewNoProxy(conn.config.ProxyConfig, remoteWgPort)
}
log.Debugf("falling back to local proxy mode with peer %s", conn.config.Key)
return proxy.NewWireguardProxy(conn.config.ProxyConfig)
}
func (conn *Conn) sendLocalDirectMode(localMode bool) {
// todo what happens when we couldn't deliver this message?
// we could retry, etc but there is no guarantee
err := conn.sendSignalMessage(&sProto.Message{
Key: conn.config.LocalKey,
RemoteKey: conn.config.Key,
Body: &sProto.Body{
Type: sProto.Body_MODE,
Mode: &sProto.Mode{
Direct: &localMode,
},
NetBirdVersion: version.NetbirdVersion(),
},
})
if err != nil {
log.Errorf("failed to send local proxy mode to remote peer %s, error: %s", conn.config.Key, err)
}
}
func (conn *Conn) receiveRemoteDirectMode() bool {
timeout := time.Second
timer := time.NewTimer(timeout)
defer timer.Stop()
select {
case receivedMSG := <-conn.remoteModeCh:
return receivedMSG.Direct
case <-timer.C:
// we didn't receive a message from remote so we assume that it supports the direct mode to keep the old behaviour
log.Debugf("timeout after %s while waiting for remote direct mode message from remote peer %s",
timeout, conn.config.Key)
return true
}
}
// cleanup closes all open resources and sets status to StatusDisconnected
func (conn *Conn) cleanup() error {
log.Debugf("trying to cleanup %s", conn.config.Key)
@ -459,6 +527,11 @@ func (conn *Conn) SetSignalCandidate(handler func(candidate ice.Candidate) error
conn.signalCandidate = handler
}
// SetSendSignalMessage sets a handler function to be triggered by Conn when there is new message to send via signal
func (conn *Conn) SetSendSignalMessage(handler func(message *sProto.Message) error) {
conn.sendSignalMessage = handler
}
// onICECandidate is a callback attached to an ICE Agent to receive new local connection candidates
// and then signals them to the remote peer
func (conn *Conn) onICECandidate(candidate ice.Candidate) {
@ -613,3 +686,19 @@ func (conn *Conn) OnRemoteCandidate(candidate ice.Candidate) {
func (conn *Conn) GetKey() string {
return conn.config.Key
}
// OnModeMessage unmarshall the payload message and send it to the mode message channel
func (conn *Conn) OnModeMessage(message ModeMessage) error {
select {
case conn.remoteModeCh <- message:
return nil
default:
return fmt.Errorf("unable to process mode message: channel busy")
}
}
// RegisterProtoSupportMeta register supported proto message in the connection metadata
func (conn *Conn) RegisterProtoSupportMeta(support []uint32) {
protoSupport := signal.ParseFeaturesSupported(support)
conn.meta.protoSupport = protoSupport
}

View File

@ -7,9 +7,11 @@ import (
"github.com/magiconair/properties/assert"
"github.com/pion/ice/v2"
"golang.org/x/sync/errgroup"
"github.com/netbirdio/netbird/client/internal/proxy"
"github.com/netbirdio/netbird/iface"
sproto "github.com/netbirdio/netbird/signal/proto"
)
var connConf = ConnConfig{
@ -329,3 +331,110 @@ func TestConn_ShouldUseProxy(t *testing.T) {
})
}
}
func TestGetProxyWithMessageExchange(t *testing.T) {
publicHostCandidate := &mockICECandidate{
AddressFunc: func() string {
return "8.8.8.8"
},
TypeFunc: func() ice.CandidateType {
return ice.CandidateTypeHost
},
}
relayCandidate := &mockICECandidate{
AddressFunc: func() string {
return "1.1.1.1"
},
TypeFunc: func() ice.CandidateType {
return ice.CandidateTypeRelay
},
}
testCases := []struct {
name string
candatePair *ice.CandidatePair
inputDirectModeSupport bool
inputRemoteModeMessage bool
expected proxy.Type
}{
{
name: "Should Result In Using Wireguard Proxy When Local Eval Is Use Proxy",
candatePair: &ice.CandidatePair{
Local: relayCandidate,
Remote: publicHostCandidate,
},
inputDirectModeSupport: true,
inputRemoteModeMessage: true,
expected: proxy.TypeWireguard,
},
{
name: "Should Result In Using Wireguard Proxy When Remote Eval Is Use Proxy",
candatePair: &ice.CandidatePair{
Local: publicHostCandidate,
Remote: publicHostCandidate,
},
inputDirectModeSupport: true,
inputRemoteModeMessage: false,
expected: proxy.TypeWireguard,
},
{
name: "Should Result In Using Wireguard Proxy When Remote Direct Mode Support Is False And Local Eval Is Use Proxy",
candatePair: &ice.CandidatePair{
Local: relayCandidate,
Remote: publicHostCandidate,
},
inputDirectModeSupport: false,
inputRemoteModeMessage: false,
expected: proxy.TypeWireguard,
},
{
name: "Should Result In Using Direct When Remote Direct Mode Support Is False And Local Eval Is No Use Proxy",
candatePair: &ice.CandidatePair{
Local: publicHostCandidate,
Remote: publicHostCandidate,
},
inputDirectModeSupport: false,
inputRemoteModeMessage: false,
expected: proxy.TypeNoProxy,
},
{
name: "Should Result In Using Direct When Local And Remote Eval Is No Proxy",
candatePair: &ice.CandidatePair{
Local: publicHostCandidate,
Remote: publicHostCandidate,
},
inputDirectModeSupport: true,
inputRemoteModeMessage: true,
expected: proxy.TypeNoProxy,
},
}
for _, testCase := range testCases {
t.Run(testCase.name, func(t *testing.T) {
g := errgroup.Group{}
conn, err := NewConn(connConf, nil)
if err != nil {
t.Fatal(err)
}
conn.meta.protoSupport.DirectCheck = testCase.inputDirectModeSupport
conn.SetSendSignalMessage(func(message *sproto.Message) error {
return nil
})
g.Go(func() error {
return conn.OnModeMessage(ModeMessage{
Direct: testCase.inputRemoteModeMessage,
})
})
resultProxy := conn.getProxyWithMessageExchange(testCase.candatePair, 1000)
err = g.Wait()
if err != nil {
t.Error(err)
}
if resultProxy.Type() != testCase.expected {
t.Errorf("result didn't match expected value: Expected: %s, Got: %s", testCase.expected, resultProxy.Type())
}
})
}
}

2
go.mod
View File

@ -55,6 +55,7 @@ require (
go.opentelemetry.io/otel/metric v0.33.0
go.opentelemetry.io/otel/sdk/metric v0.33.0
golang.org/x/net v0.8.0
golang.org/x/sync v0.1.0
golang.org/x/term v0.6.0
gopkg.in/yaml.v3 v3.0.1
)
@ -128,7 +129,6 @@ require (
golang.org/x/exp v0.0.0-20220518171630-0b5c67f07fdf // indirect
golang.org/x/image v0.0.0-20200430140353-33d19683fad8 // indirect
golang.org/x/mod v0.8.0 // indirect
golang.org/x/sync v0.1.0 // indirect
golang.org/x/text v0.8.0 // indirect
golang.org/x/tools v0.6.0 // indirect
golang.zx2c4.com/go118/netip v0.0.0-20211111135330-a4a02eeacf9d // indirect

View File

@ -19,6 +19,16 @@ type Status string
const StreamConnected Status = "Connected"
const StreamDisconnected Status = "Disconnected"
const (
// DirectCheck indicates support to direct mode checks
DirectCheck uint32 = 1
)
// FeaturesSupport register protocol supported features
type FeaturesSupport struct {
DirectCheck bool
}
type Client interface {
io.Closer
StreamConnected() bool
@ -62,3 +72,15 @@ type Credential struct {
UFrag string
Pwd string
}
// ParseFeaturesSupported parses a slice of supported features into FeaturesSupport
func ParseFeaturesSupported(featuresMessage []uint32) FeaturesSupport {
var protoSupport FeaturesSupport
for _, feature := range featuresMessage {
if feature == DirectCheck {
protoSupport.DirectCheck = true
return protoSupport
}
}
return protoSupport
}

View File

@ -2,8 +2,11 @@ package client
import (
"context"
sigProto "github.com/netbirdio/netbird/signal/proto"
"github.com/netbirdio/netbird/signal/server"
"net"
"sync"
"testing"
"time"
. "github.com/onsi/ginkgo"
. "github.com/onsi/gomega"
log "github.com/sirupsen/logrus"
@ -12,9 +15,9 @@ import (
"google.golang.org/grpc/credentials/insecure"
"google.golang.org/grpc/keepalive"
"google.golang.org/grpc/metadata"
"net"
"sync"
"time"
sigProto "github.com/netbirdio/netbird/signal/proto"
"github.com/netbirdio/netbird/signal/server"
)
var _ = Describe("GrpcClient", func() {
@ -43,15 +46,18 @@ var _ = Describe("GrpcClient", func() {
var msgReceived sync.WaitGroup
msgReceived.Add(2)
var receivedOnA string
var receivedOnB string
var payloadReceivedOnA string
var payloadReceivedOnB string
var featuresSupportedReceivedOnA []uint32
var featuresSupportedReceivedOnB []uint32
// connect PeerA to Signal
keyA, _ := wgtypes.GenerateKey()
clientA := createSignalClient(addr, keyA)
go func() {
err := clientA.Receive(func(msg *sigProto.Message) error {
receivedOnA = msg.GetBody().GetPayload()
payloadReceivedOnA = msg.GetBody().GetPayload()
featuresSupportedReceivedOnA = msg.GetBody().GetFeaturesSupported()
msgReceived.Done()
return nil
})
@ -67,7 +73,8 @@ var _ = Describe("GrpcClient", func() {
go func() {
err := clientB.Receive(func(msg *sigProto.Message) error {
receivedOnB = msg.GetBody().GetPayload()
payloadReceivedOnB = msg.GetBody().GetPayload()
featuresSupportedReceivedOnB = msg.GetBody().GetFeaturesSupported()
err := clientB.Send(&sigProto.Message{
Key: keyB.PublicKey().String(),
RemoteKey: keyA.PublicKey().String(),
@ -90,7 +97,7 @@ var _ = Describe("GrpcClient", func() {
err := clientA.Send(&sigProto.Message{
Key: keyA.PublicKey().String(),
RemoteKey: keyB.PublicKey().String(),
Body: &sigProto.Body{Payload: "ping"},
Body: &sigProto.Body{Payload: "ping", FeaturesSupported: []uint32{DirectCheck}},
})
if err != nil {
Fail("failed sending a message to PeerB")
@ -100,9 +107,10 @@ var _ = Describe("GrpcClient", func() {
Fail("test timed out on waiting for peers to exchange messages")
}
Expect(receivedOnA).To(BeEquivalentTo("pong"))
Expect(receivedOnB).To(BeEquivalentTo("ping"))
Expect(payloadReceivedOnA).To(BeEquivalentTo("pong"))
Expect(payloadReceivedOnB).To(BeEquivalentTo("ping"))
Expect(featuresSupportedReceivedOnA).To(BeNil())
Expect(featuresSupportedReceivedOnB).To(ContainElements([]uint32{DirectCheck}))
})
})
})
@ -160,6 +168,41 @@ var _ = Describe("GrpcClient", func() {
})
func TestParseFeaturesSupported(t *testing.T) {
expectedOnEmptyOrUnsupported := FeaturesSupport{DirectCheck: false}
expectedWithDirectCheck := FeaturesSupport{DirectCheck: true}
testCases := []struct {
name string
input []uint32
expected FeaturesSupport
}{
{
name: "Should Return DirectCheck Supported",
input: []uint32{DirectCheck},
expected: expectedWithDirectCheck,
},
{
name: "Should Return DirectCheck Unsupported When Nil",
input: nil,
expected: expectedOnEmptyOrUnsupported,
},
{
name: "Should Return DirectCheck Unsupported When Not Known Feature",
input: []uint32{9999},
expected: expectedOnEmptyOrUnsupported,
},
}
for _, testCase := range testCases {
t.Run(testCase.name, func(t *testing.T) {
result := ParseFeaturesSupported(testCase.input)
if result.DirectCheck != testCase.expected.DirectCheck {
t.Errorf("Direct check feature should match: Expected: %t, Got: %t", testCase.expected.DirectCheck, result.DirectCheck)
}
})
}
}
func createSignalClient(addr string, key wgtypes.Key) *GrpcClient {
var sigTLSEnabled = false
client, err := NewClient(context.Background(), addr, key, sigTLSEnabled)

View File

@ -1,4 +1,17 @@
#!/bin/bash
set -e
if ! which realpath > /dev/null 2>&1
then
echo realpath is not installed
echo run: brew install coreutils
exit 1
fi
old_pwd=$(pwd)
script_path=$(dirname $(realpath "$0"))
cd "$script_path"
go install google.golang.org/protobuf/cmd/protoc-gen-go@v1.26
go install google.golang.org/grpc/cmd/protoc-gen-go-grpc@v1.1
protoc -I proto/ proto/signalexchange.proto --go_out=. --go-grpc_out=.
protoc -I ./ ./signalexchange.proto --go_out=../ --go-grpc_out=../
cd "$old_pwd"

View File

@ -1,15 +1,15 @@
// Code generated by protoc-gen-go. DO NOT EDIT.
// versions:
// protoc-gen-go v1.26.0
// protoc v3.12.4
// protoc v3.21.9
// source: signalexchange.proto
package proto
import (
_ "github.com/golang/protobuf/protoc-gen-go/descriptor"
protoreflect "google.golang.org/protobuf/reflect/protoreflect"
protoimpl "google.golang.org/protobuf/runtime/protoimpl"
_ "google.golang.org/protobuf/types/descriptorpb"
reflect "reflect"
sync "sync"
)
@ -28,6 +28,7 @@ const (
Body_OFFER Body_Type = 0
Body_ANSWER Body_Type = 1
Body_CANDIDATE Body_Type = 2
Body_MODE Body_Type = 4
)
// Enum value maps for Body_Type.
@ -36,11 +37,13 @@ var (
0: "OFFER",
1: "ANSWER",
2: "CANDIDATE",
4: "MODE",
}
Body_Type_value = map[string]int32{
"OFFER": 0,
"ANSWER": 1,
"CANDIDATE": 2,
"MODE": 4,
}
)
@ -217,6 +220,9 @@ type Body struct {
// wgListenPort is an actual WireGuard listen port
WgListenPort uint32 `protobuf:"varint,3,opt,name=wgListenPort,proto3" json:"wgListenPort,omitempty"`
NetBirdVersion string `protobuf:"bytes,4,opt,name=netBirdVersion,proto3" json:"netBirdVersion,omitempty"`
Mode *Mode `protobuf:"bytes,5,opt,name=mode,proto3" json:"mode,omitempty"`
// featuresSupported list of supported features by the client of this protocol
FeaturesSupported []uint32 `protobuf:"varint,6,rep,packed,name=featuresSupported,proto3" json:"featuresSupported,omitempty"`
}
func (x *Body) Reset() {
@ -279,6 +285,68 @@ func (x *Body) GetNetBirdVersion() string {
return ""
}
func (x *Body) GetMode() *Mode {
if x != nil {
return x.Mode
}
return nil
}
func (x *Body) GetFeaturesSupported() []uint32 {
if x != nil {
return x.FeaturesSupported
}
return nil
}
// Mode indicates a connection mode
type Mode struct {
state protoimpl.MessageState
sizeCache protoimpl.SizeCache
unknownFields protoimpl.UnknownFields
Direct *bool `protobuf:"varint,1,opt,name=direct,proto3,oneof" json:"direct,omitempty"`
}
func (x *Mode) Reset() {
*x = Mode{}
if protoimpl.UnsafeEnabled {
mi := &file_signalexchange_proto_msgTypes[3]
ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
ms.StoreMessageInfo(mi)
}
}
func (x *Mode) String() string {
return protoimpl.X.MessageStringOf(x)
}
func (*Mode) ProtoMessage() {}
func (x *Mode) ProtoReflect() protoreflect.Message {
mi := &file_signalexchange_proto_msgTypes[3]
if protoimpl.UnsafeEnabled && x != nil {
ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
if ms.LoadMessageInfo() == nil {
ms.StoreMessageInfo(mi)
}
return ms
}
return mi.MessageOf(x)
}
// Deprecated: Use Mode.ProtoReflect.Descriptor instead.
func (*Mode) Descriptor() ([]byte, []int) {
return file_signalexchange_proto_rawDescGZIP(), []int{3}
}
func (x *Mode) GetDirect() bool {
if x != nil && x.Direct != nil {
return *x.Direct
}
return false
}
var File_signalexchange_proto protoreflect.FileDescriptor
var file_signalexchange_proto_rawDesc = []byte{
@ -298,7 +366,7 @@ var file_signalexchange_proto_rawDesc = []byte{
0x52, 0x09, 0x72, 0x65, 0x6d, 0x6f, 0x74, 0x65, 0x4b, 0x65, 0x79, 0x12, 0x28, 0x0a, 0x04, 0x62,
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@ -308,22 +376,32 @@ var file_signalexchange_proto_rawDesc = []byte{
0x67, 0x4c, 0x69, 0x73, 0x74, 0x65, 0x6e, 0x50, 0x6f, 0x72, 0x74, 0x12, 0x26, 0x0a, 0x0e, 0x6e,
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0x33,
}
var (
@ -339,25 +417,27 @@ func file_signalexchange_proto_rawDescGZIP() []byte {
}
var file_signalexchange_proto_enumTypes = make([]protoimpl.EnumInfo, 1)
var file_signalexchange_proto_msgTypes = make([]protoimpl.MessageInfo, 3)
var file_signalexchange_proto_msgTypes = make([]protoimpl.MessageInfo, 4)
var file_signalexchange_proto_goTypes = []interface{}{
(Body_Type)(0), // 0: signalexchange.Body.Type
(*EncryptedMessage)(nil), // 1: signalexchange.EncryptedMessage
(*Message)(nil), // 2: signalexchange.Message
(*Body)(nil), // 3: signalexchange.Body
(*Mode)(nil), // 4: signalexchange.Mode
}
var file_signalexchange_proto_depIdxs = []int32{
3, // 0: signalexchange.Message.body:type_name -> signalexchange.Body
0, // 1: signalexchange.Body.type:type_name -> signalexchange.Body.Type
1, // 2: signalexchange.SignalExchange.Send:input_type -> signalexchange.EncryptedMessage
1, // 3: signalexchange.SignalExchange.ConnectStream:input_type -> signalexchange.EncryptedMessage
1, // 4: signalexchange.SignalExchange.Send:output_type -> signalexchange.EncryptedMessage
1, // 5: signalexchange.SignalExchange.ConnectStream:output_type -> signalexchange.EncryptedMessage
4, // [4:6] is the sub-list for method output_type
2, // [2:4] is the sub-list for method input_type
2, // [2:2] is the sub-list for extension type_name
2, // [2:2] is the sub-list for extension extendee
0, // [0:2] is the sub-list for field type_name
4, // 2: signalexchange.Body.mode:type_name -> signalexchange.Mode
1, // 3: signalexchange.SignalExchange.Send:input_type -> signalexchange.EncryptedMessage
1, // 4: signalexchange.SignalExchange.ConnectStream:input_type -> signalexchange.EncryptedMessage
1, // 5: signalexchange.SignalExchange.Send:output_type -> signalexchange.EncryptedMessage
1, // 6: signalexchange.SignalExchange.ConnectStream:output_type -> signalexchange.EncryptedMessage
5, // [5:7] is the sub-list for method output_type
3, // [3:5] is the sub-list for method input_type
3, // [3:3] is the sub-list for extension type_name
3, // [3:3] is the sub-list for extension extendee
0, // [0:3] is the sub-list for field type_name
}
func init() { file_signalexchange_proto_init() }
@ -402,14 +482,27 @@ func file_signalexchange_proto_init() {
return nil
}
}
file_signalexchange_proto_msgTypes[3].Exporter = func(v interface{}, i int) interface{} {
switch v := v.(*Mode); i {
case 0:
return &v.state
case 1:
return &v.sizeCache
case 2:
return &v.unknownFields
default:
return nil
}
}
}
file_signalexchange_proto_msgTypes[3].OneofWrappers = []interface{}{}
type x struct{}
out := protoimpl.TypeBuilder{
File: protoimpl.DescBuilder{
GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
RawDescriptor: file_signalexchange_proto_rawDesc,
NumEnums: 1,
NumMessages: 3,
NumMessages: 4,
NumExtensions: 0,
NumServices: 1,
},

View File

@ -46,10 +46,20 @@ message Body {
OFFER = 0;
ANSWER = 1;
CANDIDATE = 2;
MODE = 4;
}
Type type = 1;
string payload = 2;
// wgListenPort is an actual WireGuard listen port
uint32 wgListenPort = 3;
string netBirdVersion = 4;
Mode mode = 5;
// featuresSupported list of supported features by the client of this protocol
repeated uint32 featuresSupported = 6;
}
// Mode indicates a connection mode
message Mode {
optional bool direct = 1;
}