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Enable IPv6 address discovery (#578)

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Agents will use IPv6 when available for ICE negotiation
This commit is contained in:
Genteure 2022-11-23 18:03:29 +08:00 committed by GitHub
parent f604956246
commit 4bd5029e7b
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GPG Key ID: 4AEE18F83AFDEB23
4 changed files with 52 additions and 34 deletions
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26
client/internal/config.go
View File

@ -33,13 +33,14 @@ func init() {
// Config Configuration type
type Config struct {
// Wireguard private key of local peer
PrivateKey string
PreSharedKey string
ManagementURL *url.URL
AdminURL *url.URL
WgIface string
WgPort int
IFaceBlackList []string
PrivateKey string
PreSharedKey string
ManagementURL *url.URL
AdminURL *url.URL
WgIface string
WgPort int
IFaceBlackList []string
DisableIPv6Discovery bool
// SSHKey is a private SSH key in a PEM format
SSHKey string
@ -69,11 +70,12 @@ func createNewConfig(managementURL, adminURL, configPath, preSharedKey string) (
return nil, err
}
config := &Config{
SSHKey: string(pem),
PrivateKey: wgKey,
WgIface: iface.WgInterfaceDefault,
WgPort: iface.DefaultWgPort,
IFaceBlackList: []string{},
SSHKey: string(pem),
PrivateKey: wgKey,
WgIface: iface.WgInterfaceDefault,
WgPort: iface.DefaultWgPort,
IFaceBlackList: []string{},
DisableIPv6Discovery: false,
}
if managementURL != "" {
URL, err := ParseURL("Management URL", managementURL)

13
client/internal/connect.go
View File

@ -185,12 +185,13 @@ func RunClient(ctx context.Context, config *Config, statusRecorder *nbStatus.Sta
func createEngineConfig(key wgtypes.Key, config *Config, peerConfig *mgmProto.PeerConfig) (*EngineConfig, error) {
engineConf := &EngineConfig{
WgIfaceName: config.WgIface,
WgAddr: peerConfig.Address,
IFaceBlackList: config.IFaceBlackList,
WgPrivateKey: key,
WgPort: config.WgPort,
SSHKey: []byte(config.SSHKey),
WgIfaceName: config.WgIface,
WgAddr: peerConfig.Address,
IFaceBlackList: config.IFaceBlackList,
DisableIPv6Discovery: config.DisableIPv6Discovery,
WgPrivateKey: key,
WgPort: config.WgPort,
SSHKey: []byte(config.SSHKey),
NATExternalIPs: config.NATExternalIPs,
}

31
client/internal/engine.go
View File

@ -55,7 +55,8 @@ type EngineConfig struct {
WgPrivateKey wgtypes.Key
// IFaceBlackList is a list of network interfaces to ignore when discovering connection candidates (ICE related)
IFaceBlackList []string
IFaceBlackList []string
DisableIPv6Discovery bool
PreSharedKey *wgtypes.Key
@ -226,13 +227,18 @@ func (e *Engine) Start() error {
return err
}
e.udpMuxConn, err = net.ListenUDP("udp4", &net.UDPAddr{Port: e.config.UDPMuxPort})
networkName := "udp"
if e.config.DisableIPv6Discovery {
networkName = "udp4"
}
e.udpMuxConn, err = net.ListenUDP(networkName, &net.UDPAddr{Port: e.config.UDPMuxPort})
if err != nil {
log.Errorf("failed listening on UDP port %d: [%s]", e.config.UDPMuxPort, err.Error())
return err
}
e.udpMuxConnSrflx, err = net.ListenUDP("udp4", &net.UDPAddr{Port: e.config.UDPMuxSrflxPort})
e.udpMuxConnSrflx, err = net.ListenUDP(networkName, &net.UDPAddr{Port: e.config.UDPMuxSrflxPort})
if err != nil {
log.Errorf("failed listening on UDP port %d: [%s]", e.config.UDPMuxSrflxPort, err.Error())
return err
@ -819,15 +825,16 @@ func (e Engine) createPeerConn(pubKey string, allowedIPs string) (*peer.Conn, er
// randomize connection timeout
timeout := time.Duration(rand.Intn(PeerConnectionTimeoutMax-PeerConnectionTimeoutMin)+PeerConnectionTimeoutMin) * time.Millisecond
config := peer.ConnConfig{
Key: pubKey,
LocalKey: e.config.WgPrivateKey.PublicKey().String(),
StunTurn: stunTurn,
InterfaceBlackList: e.config.IFaceBlackList,
Timeout: timeout,
UDPMux: e.udpMux,
UDPMuxSrflx: e.udpMuxSrflx,
ProxyConfig: proxyConfig,
LocalWgPort: e.config.WgPort,
Key: pubKey,
LocalKey: e.config.WgPrivateKey.PublicKey().String(),
StunTurn: stunTurn,
InterfaceBlackList: e.config.IFaceBlackList,
DisableIPv6Discovery: e.config.DisableIPv6Discovery,
Timeout: timeout,
UDPMux: e.udpMux,
UDPMuxSrflx: e.udpMuxSrflx,
ProxyConfig: proxyConfig,
LocalWgPort: e.config.WgPort,
NATExternalIPs: e.parseNATExternalIPMappings(),
}

16
client/internal/peer/conn.go
View File

@ -29,7 +29,8 @@ type ConnConfig struct {
// InterfaceBlackList is a list of machine interfaces that should be filtered out by ICE Candidate gathering
// (e.g. if eth0 is in the list, host candidate of this interface won't be used)
InterfaceBlackList []string
InterfaceBlackList []string
DisableIPv6Discovery bool
Timeout time.Duration
@ -145,9 +146,9 @@ func (conn *Conn) reCreateAgent() error {
failedTimeout := 6 * time.Second
var err error
conn.agent, err = ice.NewAgent(&ice.AgentConfig{
agentConfig := &ice.AgentConfig{
MulticastDNSMode: ice.MulticastDNSModeDisabled,
NetworkTypes: []ice.NetworkType{ice.NetworkTypeUDP4},
NetworkTypes: []ice.NetworkType{ice.NetworkTypeUDP4, ice.NetworkTypeUDP6},
Urls: conn.config.StunTurn,
CandidateTypes: []ice.CandidateType{ice.CandidateTypeHost, ice.CandidateTypeServerReflexive, ice.CandidateTypeRelay},
FailedTimeout: &failedTimeout,
@ -155,7 +156,14 @@ func (conn *Conn) reCreateAgent() error {
UDPMux: conn.config.UDPMux,
UDPMuxSrflx: conn.config.UDPMuxSrflx,
NAT1To1IPs: conn.config.NATExternalIPs,
})
}
if conn.config.DisableIPv6Discovery {
agentConfig.NetworkTypes = []ice.NetworkType{ice.NetworkTypeUDP4}
}
conn.agent, err = ice.NewAgent(agentConfig)
if err != nil {
return err
}