334 lines
8.5 KiB
Go
334 lines
8.5 KiB
Go
package webrtc
|
|
|
|
import (
|
|
"encoding/json"
|
|
"errors"
|
|
"fmt"
|
|
"io"
|
|
"net"
|
|
"strings"
|
|
"time"
|
|
|
|
"github.com/pion/ice/v2"
|
|
"github.com/pion/interceptor"
|
|
"github.com/pion/webrtc/v3"
|
|
"github.com/pion/webrtc/v3/pkg/media"
|
|
"github.com/rs/zerolog"
|
|
"github.com/rs/zerolog/log"
|
|
|
|
"m1k1o/neko/internal/config"
|
|
"m1k1o/neko/internal/types"
|
|
"m1k1o/neko/internal/webrtc/pionlog"
|
|
)
|
|
|
|
func New(sessions types.SessionManager, capture types.CaptureManager, desktop types.DesktopManager, config *config.WebRTC) *WebRTCManager {
|
|
return &WebRTCManager{
|
|
logger: log.With().Str("module", "webrtc").Logger(),
|
|
capture: capture,
|
|
desktop: desktop,
|
|
sessions: sessions,
|
|
config: config,
|
|
}
|
|
}
|
|
|
|
type WebRTCManager struct {
|
|
logger zerolog.Logger
|
|
videoTrack *webrtc.TrackLocalStaticSample
|
|
audioTrack *webrtc.TrackLocalStaticSample
|
|
sessions types.SessionManager
|
|
capture types.CaptureManager
|
|
desktop types.DesktopManager
|
|
config *config.WebRTC
|
|
api *webrtc.API
|
|
}
|
|
|
|
func (manager *WebRTCManager) Start() {
|
|
var err error
|
|
|
|
//
|
|
// audio
|
|
//
|
|
|
|
audioCodec := manager.capture.Audio().Codec()
|
|
manager.audioTrack, err = webrtc.NewTrackLocalStaticSample(audioCodec.Capability, "audio", "stream")
|
|
if err != nil {
|
|
manager.logger.Panic().Err(err).Msg("unable to create audio track")
|
|
}
|
|
|
|
go func() {
|
|
for {
|
|
newSample := <- manager.capture.Audio().GetSampleChannel()
|
|
err := manager.audioTrack.WriteSample(media.Sample(newSample))
|
|
if err != nil && errors.Is(err, io.ErrClosedPipe) {
|
|
manager.logger.Warn().Err(err).Msg("audio pipeline failed to write")
|
|
}
|
|
}
|
|
}()
|
|
|
|
//
|
|
// video
|
|
//
|
|
|
|
videoCodec := manager.capture.Video().Codec()
|
|
manager.videoTrack, err = webrtc.NewTrackLocalStaticSample(videoCodec.Capability, "video", "stream")
|
|
if err != nil {
|
|
manager.logger.Panic().Err(err).Msg("unable to create video track")
|
|
}
|
|
|
|
go func() {
|
|
for {
|
|
newSample := <- manager.capture.Video().GetSampleChannel()
|
|
err := manager.videoTrack.WriteSample(media.Sample(newSample))
|
|
if err != nil && errors.Is(err, io.ErrClosedPipe) {
|
|
manager.logger.Warn().Err(err).Msg("video pipeline failed to write")
|
|
}
|
|
}
|
|
}()
|
|
|
|
//
|
|
// api
|
|
//
|
|
|
|
if err := manager.initAPI(); err != nil {
|
|
manager.logger.Panic().Err(err).Msg("failed to initialize webrtc API")
|
|
}
|
|
|
|
manager.logger.Info().
|
|
Str("ice_lite", fmt.Sprintf("%t", manager.config.ICELite)).
|
|
Str("ice_servers", fmt.Sprintf("%+v", manager.config.ICEServers)).
|
|
Str("ephemeral_port_range", fmt.Sprintf("%d-%d", manager.config.EphemeralMin, manager.config.EphemeralMax)).
|
|
Str("nat_ips", strings.Join(manager.config.NAT1To1IPs, ",")).
|
|
Msgf("webrtc starting")
|
|
}
|
|
|
|
func (manager *WebRTCManager) Shutdown() error {
|
|
manager.logger.Info().Msgf("webrtc shutting down")
|
|
return nil
|
|
}
|
|
|
|
func (manager *WebRTCManager) initAPI() error {
|
|
logger := pionlog.New(manager.logger)
|
|
|
|
settings := webrtc.SettingEngine{
|
|
LoggerFactory: logger,
|
|
}
|
|
|
|
_ = settings.SetEphemeralUDPPortRange(manager.config.EphemeralMin, manager.config.EphemeralMax)
|
|
settings.SetNAT1To1IPs(manager.config.NAT1To1IPs, webrtc.ICECandidateTypeHost)
|
|
settings.SetICETimeouts(6*time.Second, 6*time.Second, 3*time.Second)
|
|
settings.SetSRTPReplayProtectionWindow(512)
|
|
settings.SetLite(manager.config.ICELite)
|
|
|
|
var networkType []webrtc.NetworkType
|
|
|
|
// Add TCP Mux
|
|
if manager.config.TCPMUX > 0 {
|
|
tcpListener, err := net.ListenTCP("tcp", &net.TCPAddr{
|
|
IP: net.IP{0, 0, 0, 0},
|
|
Port: manager.config.TCPMUX,
|
|
})
|
|
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
tcpMux := ice.NewTCPMuxDefault(ice.TCPMuxParams{
|
|
Listener: tcpListener,
|
|
Logger: logger.NewLogger("ice-tcp"),
|
|
ReadBufferSize: 32, // receiving channel size
|
|
WriteBufferSize: 4 * 1024 * 1024, // write buffer size, 4MB
|
|
})
|
|
settings.SetICETCPMux(tcpMux)
|
|
|
|
networkType = append(networkType, webrtc.NetworkTypeTCP4)
|
|
manager.logger.Info().Str("listener", tcpListener.Addr().String()).Msg("using TCP MUX")
|
|
}
|
|
|
|
// Add UDP Mux
|
|
if manager.config.UDPMUX > 0 {
|
|
udpMux, err := ice.NewMultiUDPMuxFromPort(manager.config.UDPMUX,
|
|
ice.UDPMuxFromPortWithLogger(logger.NewLogger("ice-udp")),
|
|
)
|
|
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
settings.SetICEUDPMux(udpMux)
|
|
|
|
networkType = append(networkType, webrtc.NetworkTypeUDP4)
|
|
manager.logger.Info().Int("port", manager.config.UDPMUX).Msg("using UDP MUX")
|
|
}
|
|
|
|
// Enable support for TCP and UDP ICE candidates
|
|
if len(networkType) > 0 {
|
|
settings.SetNetworkTypes(networkType)
|
|
}
|
|
|
|
// Create MediaEngine with selected codecs
|
|
engine := webrtc.MediaEngine{}
|
|
manager.capture.Audio().Codec().Register(&engine)
|
|
manager.capture.Video().Codec().Register(&engine)
|
|
|
|
// Register Interceptors
|
|
i := &interceptor.Registry{}
|
|
if err := webrtc.RegisterDefaultInterceptors(&engine, i); err != nil {
|
|
return err
|
|
}
|
|
|
|
// Create API with MediaEngine and SettingEngine
|
|
manager.api = webrtc.NewAPI(
|
|
webrtc.WithMediaEngine(&engine),
|
|
webrtc.WithSettingEngine(settings),
|
|
webrtc.WithInterceptorRegistry(i),
|
|
)
|
|
|
|
return nil
|
|
}
|
|
|
|
func (manager *WebRTCManager) CreatePeer(id string, session types.Session) (types.Peer, error) {
|
|
configuration := webrtc.Configuration{
|
|
SDPSemantics: webrtc.SDPSemanticsUnifiedPlanWithFallback,
|
|
}
|
|
|
|
if !manager.config.ICELite {
|
|
configuration.ICEServers = manager.config.ICEServers
|
|
}
|
|
|
|
// Create new peer connection
|
|
connection, err := manager.api.NewPeerConnection(configuration)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
negotiated := true
|
|
_, err = connection.CreateDataChannel("data", &webrtc.DataChannelInit{
|
|
Negotiated: &negotiated,
|
|
})
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
connection.OnDataChannel(func(d *webrtc.DataChannel) {
|
|
d.OnMessage(func(msg webrtc.DataChannelMessage) {
|
|
if err = manager.handle(id, msg); err != nil {
|
|
manager.logger.Warn().Err(err).Msg("data handle failed")
|
|
}
|
|
})
|
|
})
|
|
|
|
// Set the handler for ICE connection state
|
|
// This will notify you when the peer has connected/disconnected
|
|
connection.OnICEConnectionStateChange(func(connectionState webrtc.ICEConnectionState) {
|
|
manager.logger.Info().
|
|
Str("connection_state", connectionState.String()).
|
|
Msg("connection state has changed")
|
|
})
|
|
|
|
rtpVideo, err := connection.AddTrack(manager.videoTrack)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
rtpAudio, err := connection.AddTrack(manager.audioTrack)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
connection.OnConnectionStateChange(func(state webrtc.PeerConnectionState) {
|
|
switch state {
|
|
case webrtc.PeerConnectionStateDisconnected:
|
|
manager.logger.Info().Str("id", id).Msg("peer disconnected")
|
|
manager.sessions.Destroy(id)
|
|
case webrtc.PeerConnectionStateFailed:
|
|
manager.logger.Warn().Str("id", id).Msg("peer failed")
|
|
manager.sessions.Destroy(id)
|
|
case webrtc.PeerConnectionStateClosed:
|
|
manager.logger.Info().Str("id", id).Msg("peer closed")
|
|
manager.sessions.Destroy(id)
|
|
case webrtc.PeerConnectionStateConnected:
|
|
manager.logger.Info().Str("id", id).Msg("peer connected")
|
|
if err = session.SetConnected(true); err != nil {
|
|
manager.logger.Warn().Err(err).Msg("unable to set connected on peer")
|
|
manager.sessions.Destroy(id)
|
|
}
|
|
}
|
|
})
|
|
|
|
peer := &Peer{
|
|
id: id,
|
|
manager: manager,
|
|
connection: connection,
|
|
}
|
|
|
|
connection.OnNegotiationNeeded(func() {
|
|
manager.logger.Warn().Msg("negotiation is needed")
|
|
|
|
sdp, err := peer.CreateOffer()
|
|
if err != nil {
|
|
manager.logger.Err(err).Msg("creating offer failed")
|
|
return
|
|
}
|
|
|
|
err = session.SignalLocalOffer(sdp)
|
|
if err != nil {
|
|
manager.logger.Warn().Err(err).Msg("sending SignalLocalOffer failed")
|
|
return
|
|
}
|
|
})
|
|
|
|
connection.OnICECandidate(func(i *webrtc.ICECandidate) {
|
|
if i == nil {
|
|
manager.logger.Info().Msg("sent all ICECandidates")
|
|
return
|
|
}
|
|
|
|
candidateString, err := json.Marshal(i.ToJSON())
|
|
if err != nil {
|
|
manager.logger.Warn().Err(err).Msg("converting ICECandidate to json failed")
|
|
return
|
|
}
|
|
|
|
if err := session.SignalCandidate(string(candidateString)); err != nil {
|
|
manager.logger.Warn().Err(err).Msg("sending SignalCandidate failed")
|
|
return
|
|
}
|
|
})
|
|
|
|
if err := session.SetPeer(peer); err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
go func() {
|
|
rtcpBuf := make([]byte, 1500)
|
|
for {
|
|
if _, _, rtcpErr := rtpVideo.Read(rtcpBuf); rtcpErr != nil {
|
|
return
|
|
}
|
|
}
|
|
}()
|
|
|
|
go func() {
|
|
rtcpBuf := make([]byte, 1500)
|
|
for {
|
|
if _, _, rtcpErr := rtpAudio.Read(rtcpBuf); rtcpErr != nil {
|
|
return
|
|
}
|
|
}
|
|
}()
|
|
|
|
return peer, nil
|
|
}
|
|
|
|
func (manager *WebRTCManager) ICELite() bool {
|
|
return manager.config.ICELite
|
|
}
|
|
|
|
func (manager *WebRTCManager) ICEServers() []webrtc.ICEServer {
|
|
return manager.config.ICEServers
|
|
}
|
|
|
|
func (manager *WebRTCManager) ImplicitControl() bool {
|
|
return manager.config.ImplicitControl
|
|
}
|