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c3dee478f5
commit
f784f33c2d
@ -55,6 +55,21 @@ func (m *Multicast) Init(core *yggdrasil.Core, state *config.NodeState, log *log
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// listen for multicast beacons from other hosts and will advertise multicast
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// beacons out to the network.
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func (m *Multicast) Start() error {
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var err error
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phony.Block(m, func() {
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err = m._start()
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})
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return err
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}
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func (m *Multicast) _start() error {
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if m.isOpen {
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return fmt.Errorf("multicast module is already started")
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}
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if len(m.config.GetCurrent().MulticastInterfaces) == 0 {
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return fmt.Errorf("no MulticastInterfaces configured")
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}
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m.log.Infoln("Starting multicast module")
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addr, err := net.ResolveUDPAddr("udp", m.groupAddr)
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if err != nil {
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return err
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@ -80,8 +95,22 @@ func (m *Multicast) Start() error {
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return nil
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}
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// Stop is not implemented for multicast yet.
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func (m *Multicast) Stop() error {
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// IsStarted returns true if the module has been started.
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func (m *Multicast) IsStarted() bool {
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var isOpen bool
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phony.Block(m, func() {
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isOpen = m.isOpen
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})
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return isOpen
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}
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// Stop stops the multicast module.
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func (m *Multicast) Stop() {
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m.Act(m, m._stop)
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}
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func (m *Multicast) _stop() {
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m.log.Infoln("Stopping multicast module")
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m.isOpen = false
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if m.announcer != nil {
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m.announcer.Stop()
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@ -90,15 +119,27 @@ func (m *Multicast) Stop() error {
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m.platformhandler.Stop()
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}
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m.sock.Close()
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return nil
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}
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// UpdateConfig updates the multicast module with the provided config.NodeConfig
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// and then signals the various module goroutines to reconfigure themselves if
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// needed.
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func (m *Multicast) UpdateConfig(config *config.NodeConfig) {
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m.Act(m, func() { m._updateConfig(config) })
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}
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func (m *Multicast) _updateConfig(config *config.NodeConfig) {
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m.log.Debugln("Reloading multicast configuration...")
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if m.IsStarted() {
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if len(config.MulticastInterfaces) == 0 || config.LinkLocalTCPPort != m.listenPort {
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m.Stop()
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}
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}
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m.config.Replace(*config)
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m.listenPort = config.LinkLocalTCPPort
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if !m.IsStarted() && len(config.MulticastInterfaces) > 0 {
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m.Start()
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}
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}
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// GetInterfaces returns the currently known/enabled multicast interfaces. It is
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