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Split ICE Servers to frontend and backend (#37)

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* split iceservers to frontend and backend.

* no backend ice servers when ice lite enabled.

* update config.
This commit is contained in:
Miroslav Šedivý
2023-03-27 18:34:24 +02:00
committed by GitHub
parent f8edd988b3
commit 08a5d5abb4
3 changed files with 64 additions and 21 deletions
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68
internal/config/webrtc.go
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@ -16,13 +16,14 @@ import (
const defStunSrv = "stun:stun.l.google.com:19302"
type WebRTC struct {
ICELite bool
ICETrickle bool
ICEServers []types.ICEServer
EphemeralMin uint16
EphemeralMax uint16
TCPMux int
UDPMux int
ICELite bool
ICETrickle bool
ICEServersFrontend []types.ICEServer
ICEServersBackend []types.ICEServer
EphemeralMin uint16
EphemeralMax uint16
TCPMux int
UDPMux int
NAT1To1IPs []string
IpRetrievalUrl string
@ -43,11 +44,21 @@ func (WebRTC) Init(cmd *cobra.Command) error {
return err
}
cmd.PersistentFlags().String("webrtc.iceservers", "[]", "STUN and TURN servers in JSON format with `urls`, `username`, `password` keys")
cmd.PersistentFlags().String("webrtc.iceservers", "[]", "Global STUN and TURN servers in JSON format with `urls`, `username` and `credential` keys")
if err := viper.BindPFlag("webrtc.iceservers", cmd.PersistentFlags().Lookup("webrtc.iceservers")); err != nil {
return err
}
cmd.PersistentFlags().String("webrtc.iceservers.frontend", "[]", "Frontend only STUN and TURN servers in JSON format with `urls`, `username` and `credential` keys")
if err := viper.BindPFlag("webrtc.iceservers.frontend", cmd.PersistentFlags().Lookup("webrtc.iceservers.frontend")); err != nil {
return err
}
cmd.PersistentFlags().String("webrtc.iceservers.backend", "[]", "Backend only STUN and TURN servers in JSON format with `urls`, `username` and `credential` keys")
if err := viper.BindPFlag("webrtc.iceservers.backend", cmd.PersistentFlags().Lookup("webrtc.iceservers.backend")); err != nil {
return err
}
cmd.PersistentFlags().String("webrtc.epr", "", "limits the pool of ephemeral ports that ICE UDP connections can allocate from")
if err := viper.BindPFlag("webrtc.epr", cmd.PersistentFlags().Lookup("webrtc.epr")); err != nil {
return err
@ -97,16 +108,43 @@ func (s *WebRTC) Set() {
s.ICELite = viper.GetBool("webrtc.icelite")
s.ICETrickle = viper.GetBool("webrtc.icetrickle")
if err := viper.UnmarshalKey("webrtc.iceservers", &s.ICEServers, viper.DecodeHook(
utils.JsonStringAutoDecode(s.ICEServers),
// parse frontend ice servers
if err := viper.UnmarshalKey("webrtc.iceservers.frontend", &s.ICEServersFrontend, viper.DecodeHook(
utils.JsonStringAutoDecode([]types.ICEServer{}),
)); err != nil {
log.Warn().Err(err).Msgf("unable to parse ICE servers")
log.Warn().Err(err).Msgf("unable to parse frontend ICE servers")
}
if len(s.ICEServers) == 0 {
s.ICEServers = append(s.ICEServers, types.ICEServer{
URLs: []string{defStunSrv},
})
// parse backend ice servers
if err := viper.UnmarshalKey("webrtc.iceservers.backend", &s.ICEServersBackend, viper.DecodeHook(
utils.JsonStringAutoDecode([]types.ICEServer{}),
)); err != nil {
log.Warn().Err(err).Msgf("unable to parse backend ICE servers")
}
if s.ICELite && len(s.ICEServersBackend) > 0 {
log.Warn().Msgf("ICE Lite is enabled, but backend ICE servers are configured. Backend ICE servers will be ignored.")
}
// if no frontend or backend ice servers are configured
if len(s.ICEServersFrontend) == 0 && len(s.ICEServersBackend) == 0 {
// parse global ice servers
var iceServers []types.ICEServer
if err := viper.UnmarshalKey("webrtc.iceservers", &iceServers, viper.DecodeHook(
utils.JsonStringAutoDecode([]types.ICEServer{}),
)); err != nil {
log.Warn().Err(err).Msgf("unable to parse global ICE servers")
}
// add default stun server if none are configured
if len(iceServers) == 0 {
iceServers = append(iceServers, types.ICEServer{
URLs: []string{defStunSrv},
})
}
s.ICEServersFrontend = append(s.ICEServersFrontend, iceServers...)
s.ICEServersBackend = append(s.ICEServersBackend, iceServers...)
}
s.TCPMux = viper.GetInt("webrtc.tcpmux")