760 lines
25 KiB
Go
760 lines
25 KiB
Go
package localserver
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import (
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"context"
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"encoding/json"
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"errors"
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"fmt"
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"io"
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"strconv"
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sync "sync"
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"sync/atomic"
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"time"
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"github.com/google/uuid"
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"github.com/pion/rtcp"
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"github.com/pion/webrtc/v3"
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)
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const (
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AUDIO_CHANNEL_ACCESS_DENIED ReqType = "audio_channel_access_denied"
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AUDIO_CHANNEL_STOP_CALL ReqType = "audio_channel_stop_call"
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AUDIO_CHANNEL_ACCESS_GRANTED ReqType = "audio_channel_access_granted"
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AUDIO_CHANNEL_WEBRTC_OFFER ReqType = "audio_channel_offer"
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AUDIO_CHANNEL_WEBRTC_ANSWER ReqType = "audio_channel_answer"
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AUDIO_CHANNEL_WEBRTC_RENNEGOTIATION_OFFER ReqType = "audio_channel_rennegotiation_offer"
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AUDIO_CHANNEL_WEBRTC_RENNEGOTIATION_ANSWER ReqType = "audio_channel_rennegotiation_answer"
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AUDIO_CHANNEL_WEBRTC_COUNTER_OFFER ReqType = "audio_channel_webrtc_counter_offer"
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AUDIO_CHANNEL_WEBRTC_CANDIDATE ReqType = "audio_channel_webrtc_candidate"
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AUDIO_CHANNEL_REMOVE_VIDEO ReqType = "audio_channel_remove_video"
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GET_AUDIO_CHANNEL_TRACKS ReqType = "audio_channel_get_tracks"
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)
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const (
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AUDIO_CHANNEL_USER_MUTE = "audio_channel_user_mute"
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AUDIO_CHANNEL_USER_UNMUTE = "audio_channel_user_unmute"
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AUDIO_CHANNEL_USER_SPEAKING = "audio_channel_user_speaking"
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AUDIO_CHANNEL_USER_STOPPED_SPEAKING = "audio_channel_user_stopped_speaking"
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)
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type ZoneRTCPeerConnection struct {
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*webrtc.PeerConnection
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makingOffer bool
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makingOfferLock *sync.Mutex
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negotiate func(string, SendDCMessageFunc)
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}
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type AudioChannel struct {
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ID string `json:"id"`
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Owner string `json:"owner"`
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ChannelType string `json:"channelType"`
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Members []string `json:"members"`
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CurrentMembersId []string `json:"currentMembersId"`
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CurrentMembers map[string]*AudioChannelMember `json:"currentMembers"`
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localSD map[string]*webrtc.SessionDescription `json:"-"`
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rtcPeerConnections map[string]*ZoneRTCPeerConnection `json:"-"`
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audioTransceiver map[string][]*PeerSender `json:"-"`
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audiChannelsDataChannels map[string]*DataChannel `json:"-"`
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pendingCandidates map[string][]*webrtc.ICECandidate `json:"-"`
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remoteTracks map[string][]*RemoteTrack `json:"-"`
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middlewares []interface{} `json:"-"`
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candidateFlag *uint32 `json:"-"`
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remoteTracksFlag *uint32 `json:"-"`
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rtcPeerConnectionMapFlag *uint32 `json:"-"`
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dataChannelMapFlag *uint32 `json:"-"`
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localSDMapFlag *uint32 `json:"-"`
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audioSenderFlag *uint32 `json:"-"`
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}
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type AudioChannelOnICECandidateFunc = func(string, string, *webrtc.ICECandidate) error
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func NewAudioChannel(id string, owner string, channelType string, members []string, currentMembersId []string, currentMembers map[string]*AudioChannelMember) (audioChannel *AudioChannel) {
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candidateFlag := uint32(0)
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remoteTracksFlag := uint32(0)
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rtcPeerConnectionMapFlag := uint32(0)
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dataChannelMapFlag := uint32(0)
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localSDMapFlag := uint32(0)
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audioSenderFlag := uint32(0)
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audioChannel = &AudioChannel{
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ID: id,
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Owner: owner,
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ChannelType: channelType,
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Members: members,
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CurrentMembersId: currentMembersId,
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CurrentMembers: currentMembers,
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localSD: make(map[string]*webrtc.SessionDescription),
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rtcPeerConnections: make(map[string]*ZoneRTCPeerConnection),
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audioTransceiver: make(map[string][]*PeerSender),
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audiChannelsDataChannels: make(map[string]*DataChannel),
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pendingCandidates: make(map[string][]*webrtc.ICECandidate),
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remoteTracks: make(map[string][]*RemoteTrack),
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middlewares: make([]interface{}, 0),
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candidateFlag: &candidateFlag,
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remoteTracksFlag: &remoteTracksFlag,
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rtcPeerConnectionMapFlag: &rtcPeerConnectionMapFlag,
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dataChannelMapFlag: &dataChannelMapFlag,
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localSDMapFlag: &localSDMapFlag,
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audioSenderFlag: &audioSenderFlag,
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}
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return
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}
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func (ac *AudioChannel) HandleOffer(ctx context.Context, channelId string, userId string, sdp string, hostId string, sendDCMessage SendDCMessageFunc, cb AudioChannelOnICECandidateFunc) (done chan struct{}, errCh chan error) {
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done, errCh = make(chan struct{}), make(chan error)
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go func() {
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peerConnection, err := ac.createPeerConnection(userId, ac.ID, webrtc.SDPTypeAnswer, cb, sendDCMessage)
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if err != nil {
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errCh <- err
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return
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}
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_ = atomicallyExecute(ac.rtcPeerConnectionMapFlag, func() (err error) {
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ac.rtcPeerConnections[userId] = &ZoneRTCPeerConnection{
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PeerConnection: peerConnection,
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makingOffer: false,
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makingOfferLock: &sync.Mutex{},
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negotiate: ac.negotiate,
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}
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return
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})
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offer := webrtc.SessionDescription{
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Type: webrtc.SDPTypeOffer,
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SDP: sdp,
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}
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if err = peerConnection.SetRemoteDescription(offer); err != nil {
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errCh <- err
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return
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}
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rawAnswer, err := peerConnection.CreateAnswer(nil)
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if err != nil {
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errCh <- err
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return
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}
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if err = peerConnection.SetLocalDescription(rawAnswer); err != nil {
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errCh <- err
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return
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}
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_, _ = sendDCMessage(string(AUDIO_CHANNEL_WEBRTC_ANSWER), hostId, userId, map[string]interface{}{
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"to": userId,
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"from": ac.ID,
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"channelId": channelId,
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"sdp": rawAnswer.SDP,
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})
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done <- struct{}{}
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logger.Println("handle offer done")
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}()
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return
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}
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func (ac *AudioChannel) HandleCounterOffer(ctx context.Context, userId string, sendDCMessage SendDCMessageFunc) (err error) {
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// if err = atomicallyExecute(ac.rtcPeerConnectionMapFlag, func() (err error) {
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// if _, ok := ac.rtcPeerConnections[userId]; !ok {
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// err = fmt.Errorf("no field corresponding peer connection for id %s", userId)
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// return
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// }
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// logger.Println("handling counter offer")
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// connection := ac.rtcPeerConnections[userId]
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// err = atomicallyExecute(ac.localSDMapFlag, func() (err error) {
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// err = connection.SetLocalDescription(*ac.localSD[userId])
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// return
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// })
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// return
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// }); err != nil {
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// return
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// }
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// _ = atomicallyExecute(ac.localSDMapFlag, func() (err error) {
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// delete(ac.localSD, userId)
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// return
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// })
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if err = atomicallyExecute(ac.candidateFlag, func() (err error) {
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for _, candidate := range ac.pendingCandidates[userId] {
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logger.Println("sending candidate to", userId, candidate)
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d, e := sendDCMessage(string(AUDIO_CHANNEL_WEBRTC_CANDIDATE), "", userId, map[string]interface{}{
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"from": ac.ID,
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"to": userId,
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"candidate": candidate.ToJSON().Candidate,
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"sdpMid": *candidate.ToJSON().SDPMid,
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"sdpMLineIndex": strconv.Itoa(int(*candidate.ToJSON().SDPMLineIndex)),
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})
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select {
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case <-d:
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case err = <-e:
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return
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}
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}
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delete(ac.pendingCandidates, userId)
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return
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}); err != nil {
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return
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}
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return
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}
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func (ac *AudioChannel) HandleRennegotiationOffer(from string, sdp string, sendDCMessage SendDCMessageFunc) (err error) {
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err = atomicallyExecute(ac.rtcPeerConnectionMapFlag, func() (err error) {
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if _, ok := ac.rtcPeerConnections[from]; !ok {
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err = fmt.Errorf("no corresponding peer connection for id %s", from)
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return
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}
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ac.rtcPeerConnections[from].makingOfferLock.Lock()
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if ac.rtcPeerConnections[from].makingOffer {
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ac.rtcPeerConnections[from].makingOfferLock.Unlock()
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return fmt.Errorf("already making an offer or state is stable")
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}
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ac.rtcPeerConnections[from].makingOfferLock.Unlock()
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if err = ac.rtcPeerConnections[from].SetRemoteDescription(webrtc.SessionDescription{SDP: sdp, Type: webrtc.SDPTypeOffer}); err != nil {
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return
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}
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localSd, err := ac.rtcPeerConnections[from].CreateAnswer(nil)
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if err != nil {
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return
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}
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if err = ac.rtcPeerConnections[from].SetLocalDescription(localSd); err != nil {
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return
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}
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d, e := sendDCMessage(string(AUDIO_CHANNEL_WEBRTC_RENNEGOTIATION_ANSWER), ac.ID, from, map[string]interface{}{
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"from": ac.ID,
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"to": from,
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"sdp": localSd.SDP,
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})
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select {
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case <-d:
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case err = <-e:
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}
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return
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})
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return
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}
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func (ac *AudioChannel) HandleRennegotiationAnswer(from string, sdp string) (err error) {
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logger.Println("---------------------handling rennego answer")
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err = atomicallyExecute(ac.rtcPeerConnectionMapFlag, func() (err error) {
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ac.rtcPeerConnections[from].makingOfferLock.Lock()
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if ac.rtcPeerConnections[from].makingOffer {
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ac.rtcPeerConnections[from].makingOfferLock.Unlock()
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return fmt.Errorf("already making an offer or state is stable")
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}
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ac.rtcPeerConnections[from].makingOfferLock.Unlock()
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if _, ok := ac.rtcPeerConnections[from]; !ok {
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err = fmt.Errorf("no corresponding peer connection for id %s", from)
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return
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}
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err = ac.rtcPeerConnections[from].SetRemoteDescription(webrtc.SessionDescription{SDP: sdp, Type: webrtc.SDPTypeAnswer})
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return
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})
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return
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}
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func (ac *AudioChannel) AddCandidate(candidate *webrtc.ICECandidateInit, from string) (err error) {
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logger.Println("adding ice candidate", candidate)
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err = atomicallyExecute(ac.rtcPeerConnectionMapFlag, func() (err error) {
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if _, ok := ac.rtcPeerConnections[from]; ok && candidate != nil {
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err = ac.rtcPeerConnections[from].AddICECandidate(*candidate)
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}
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return
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})
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return
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}
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func (ac *AudioChannel) createPeerConnection(target string, from string, peerType webrtc.SDPType, cb AudioChannelOnICECandidateFunc, sendDCMessage SendDCMessageFunc) (peerConnection *webrtc.PeerConnection, err error) {
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defer func() {
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if r := recover(); err != nil {
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logger.Printf("recover from panic : %v\n", r)
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}
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}()
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config := webrtc.Configuration{
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ICEServers: []webrtc.ICEServer{
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{
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URLs: []string{"stun:stun.l.google.com:19302", "stun:stunserver.org:3478"},
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},
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},
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SDPSemantics: webrtc.SDPSemanticsUnifiedPlanWithFallback,
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}
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peerConnection, err = webrtc.NewPeerConnection(config)
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if err != nil {
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return
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}
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logger.Println("---------------------------------------------------")
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if peerType == webrtc.SDPTypeAnswer {
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maxRetransmits := uint16(100)
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channel, err := peerConnection.CreateDataChannel("data", &webrtc.DataChannelInit{
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MaxRetransmits: &maxRetransmits,
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})
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if err != nil {
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return nil, err
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}
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channel.OnOpen(func() {
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logger.Println("channel opened")
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if chanErr := channel.SendText("yooo man this is open"); chanErr != nil {
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logger.Println(chanErr)
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}
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})
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channel.OnMessage(func(msg webrtc.DataChannelMessage) {
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var event CallEvent
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if err := json.Unmarshal(msg.Data, &event); err != nil {
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logger.Println(err)
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return
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}
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if e := ac.HandleDataChannelEvents(event.From, event.EventId, event.Payload); e != nil {
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logger.Println("*-------------- datachannel error: ", e)
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}
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})
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logger.Println("new channel for target : ", target)
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channel.SetBufferedAmountLowThreshold(bufferedAmountLowThreshold)
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channel.OnBufferedAmountLow(func() {
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})
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_ = atomicallyExecute(ac.dataChannelMapFlag, func() (err error) {
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logger.Println(target)
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l := uint32(0)
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ac.audiChannelsDataChannels[target] = &DataChannel{
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DataChannel: channel,
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l: &l,
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}
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return
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})
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} else {
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peerConnection.OnDataChannel(func(dc *webrtc.DataChannel) {
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_ = atomicallyExecute(ac.dataChannelMapFlag, func() (err error) {
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l := uint32(0)
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ac.audiChannelsDataChannels[target] = &DataChannel{
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DataChannel: dc,
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l: &l,
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}
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return
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})
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dc.OnOpen(func() {
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logger.Printf("got a new open datachannel %s\n", dc.Label())
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})
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dc.OnMessage(func(msg webrtc.DataChannelMessage) {
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var event CallEvent
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if err := json.Unmarshal(msg.Data, &event); err != nil {
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logger.Println(err)
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return
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}
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if e := ac.HandleDataChannelEvents(event.From, event.EventId, event.Payload); e != nil {
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logger.Println("*-------------- datachannel error: ", e)
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}
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})
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})
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}
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err = atomicallyExecute(ac.rtcPeerConnectionMapFlag, func() (err error) {
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err = atomicallyExecute(ac.remoteTracksFlag, func() (err error) {
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logger.Println("------------------", ac.CurrentMembersId)
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for _, id := range ac.CurrentMembersId {
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logger.Println(id)
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if id != target {
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if _, ok := ac.remoteTracks[id]; !ok {
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continue
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}
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for _, track := range ac.remoteTracks[id] {
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transceiver, err := peerConnection.AddTransceiverFromKind(track.Track.Kind(), webrtc.RTPTransceiverInit{Direction: webrtc.RTPTransceiverDirectionSendonly})
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if err != nil {
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logger.Println("add track error")
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continue
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}
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if err := transceiver.Sender().ReplaceTrack(track.Track); err != nil {
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logger.Println("add track error")
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continue
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}
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_ = atomicallyExecute(ac.audioSenderFlag, func() (err error) {
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if len(ac.audioTransceiver) == 0 {
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ac.audioTransceiver[id] = []*PeerSender{{ID: target, Transceiver: transceiver}}
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} else {
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ac.audioTransceiver[id] = append(ac.audioTransceiver[id], &PeerSender{ID: target, Transceiver: transceiver})
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}
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return
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})
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logger.Println("track added", track)
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}
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}
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}
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return
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})
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return
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})
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peerConnection.OnConnectionStateChange(func(pcs webrtc.PeerConnectionState) {
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if pcs == webrtc.PeerConnectionStateClosed || pcs == webrtc.PeerConnectionStateDisconnected || pcs == webrtc.PeerConnectionStateFailed {
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logger.Println(pcs)
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//ac.HandleLeavingMember(target, squadId)
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}
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})
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peerConnection.OnICEConnectionStateChange(func(is webrtc.ICEConnectionState) {
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logger.Printf("ICE connection state has changed %s\n", is.String())
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if is == webrtc.ICEConnectionStateDisconnected || is == webrtc.ICEConnectionStateFailed {
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logger.Println(is)
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}
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})
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peerConnection.OnTrack(func(tr *webrtc.TrackRemote, r *webrtc.RTPReceiver) {
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logger.Println("got new track")
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defer func() {
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if stopErr := r.Stop(); stopErr != nil {
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logger.Println(stopErr)
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}
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}()
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go func() {
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ticker := time.NewTicker(1500 * time.Millisecond)
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for range ticker.C {
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if rtcpSendErr := peerConnection.WriteRTCP([]rtcp.Packet{&rtcp.PictureLossIndication{MediaSSRC: uint32(tr.SSRC())}}); rtcpSendErr != nil {
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logger.Println(rtcpSendErr)
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break
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}
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}
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}()
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uniqId := uuid.New()
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i := fmt.Sprintf("%s/%s", target, uniqId.String())
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logger.Println("*************************----------------", i, "-----------------------***************")
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localTrack, newTrackErr := webrtc.NewTrackLocalStaticRTP(tr.Codec().RTPCodecCapability, i, i)
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if newTrackErr != nil {
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return
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}
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logger.Println(localTrack)
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rtpbuf := make([]byte, 1400)
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flag := int32(0)
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remote := &RemoteTrack{ID: target, Track: localTrack, rdv: &flag}
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_ = atomicallyExecute(ac.remoteTracksFlag, func() (err error) {
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if len(ac.remoteTracks[target]) == 0 {
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ac.remoteTracks[target] = []*RemoteTrack{remote}
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} else {
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ac.remoteTracks[target] = append(ac.remoteTracks[target], remote)
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}
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index := len(ac.remoteTracks[target])
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logger.Println(index, ac.remoteTracks)
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return
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})
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_ = atomicallyExecute(ac.rtcPeerConnectionMapFlag, func() (err error) {
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for _, id := range ac.CurrentMembersId {
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if id != target {
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if _, ok := ac.rtcPeerConnections[id]; !ok {
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continue
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}
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connection := ac.rtcPeerConnections[id]
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transceiver, tranceiverErr := connection.AddTransceiverFromKind(localTrack.Kind(), webrtc.RTPTransceiverInit{Direction: webrtc.RTPTransceiverDirectionSendonly})
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if tranceiverErr != nil {
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logger.Println(tranceiverErr)
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continue
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}
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if replaceTrackErr := transceiver.Sender().ReplaceTrack(localTrack); replaceTrackErr != nil {
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logger.Println(replaceTrackErr)
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continue
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}
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go func() {
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rtcpBuf := make([]byte, 1500)
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for {
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if _, _, rtcpErr := transceiver.Sender().Read(rtcpBuf); rtcpErr != nil {
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return
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}
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}
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}()
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if localTrack.Kind() == webrtc.RTPCodecTypeAudio {
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_ = atomicallyExecute(ac.audioSenderFlag, func() (err error) {
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if len(ac.audioTransceiver) == 0 {
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ac.audioTransceiver[target] = []*PeerSender{{ID: id, Transceiver: transceiver}}
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} else {
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ac.audioTransceiver[target] = append(ac.audioTransceiver[target], &PeerSender{ID: id, Transceiver: transceiver})
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}
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return
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})
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} else if localTrack.Kind() == webrtc.RTPCodecTypeVideo {
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logger.Println("track of wrong type")
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}
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go func() {
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<-time.After(time.Millisecond * 500)
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|
connection.negotiate(id, sendDCMessage)
|
|
}()
|
|
}
|
|
}
|
|
return
|
|
})
|
|
d := make(chan struct{})
|
|
go func() {
|
|
for {
|
|
i, _, readErr := tr.Read(rtpbuf)
|
|
if readErr != nil {
|
|
logger.Println(readErr)
|
|
break
|
|
}
|
|
//logger.Println(rtpbuf[:i])
|
|
f := atomic.LoadInt32(remote.rdv)
|
|
if f == 0 {
|
|
if _, writeErr := localTrack.Write(rtpbuf[:i]); writeErr != nil && !errors.Is(writeErr, io.ErrClosedPipe) {
|
|
logger.Println(writeErr)
|
|
break
|
|
} else {
|
|
_ = rtpbuf[:i]
|
|
}
|
|
}
|
|
}
|
|
d <- struct{}{}
|
|
}()
|
|
<-d
|
|
})
|
|
peerConnection.OnICECandidate(func(i *webrtc.ICECandidate) {
|
|
if i == nil {
|
|
return
|
|
}
|
|
_ = atomicallyExecute(ac.candidateFlag, func() (err error) {
|
|
desc := peerConnection.RemoteDescription()
|
|
if desc == nil {
|
|
logger.Println("generated candidate appended to list : ", i)
|
|
ac.pendingCandidates[target] = append(ac.pendingCandidates[target], i)
|
|
} else {
|
|
logger.Println("generated candidate : ", i)
|
|
if iceCandidateErr := cb(from, target, i); iceCandidateErr != nil {
|
|
logger.Println(iceCandidateErr)
|
|
}
|
|
}
|
|
return
|
|
})
|
|
})
|
|
//peerConnection.OnNegotiationNeeded(func() {
|
|
//logger.Println("---------------- rennego is needed -----------")
|
|
// _ = atomicallyExecute(ac.rtcPeerConnectionMapFlag, func() (err error) {
|
|
// for _, id := range ac.CurrentMembersId {
|
|
// logger.Println("----------------- sending renego to peer with id", id)
|
|
// if _, ok := ac.rtcPeerConnections[id]; !ok {
|
|
// continue
|
|
// }
|
|
// if peerConnection.SignalingState() == webrtc.SignalingStateStable {
|
|
// localSd, localSdErr := peerConnection.CreateOffer(nil)
|
|
// if localSdErr != nil {
|
|
// logger.Println(localSdErr)
|
|
// return localSdErr
|
|
// }
|
|
// if err = peerConnection.SetLocalDescription(localSd); err != nil {
|
|
// logger.Println(err)
|
|
// return
|
|
// }
|
|
// d, e := sendDCMessage(string(AUDIO_CHANNEL_WEBRTC_RENNEGOTIATION_OFFER), ac.ID, id, map[string]interface{}{
|
|
// "from": ac.ID,
|
|
// "to": id,
|
|
// "sdp": localSd.SDP,
|
|
// })
|
|
// select {
|
|
// case <-d:
|
|
// case err = <-e:
|
|
// logger.Println(err)
|
|
// }
|
|
// }
|
|
// }
|
|
// return
|
|
// })
|
|
//})
|
|
return
|
|
}
|
|
|
|
func (ac *AudioChannel) HandleLeavingMember(id string) {
|
|
if err := atomicallyExecute(ac.rtcPeerConnectionMapFlag, func() (err error) {
|
|
if _, ok := ac.rtcPeerConnections[id]; !ok {
|
|
err = fmt.Errorf("no corresponding peerconnection for audio channel leaving member")
|
|
}
|
|
return
|
|
}); err != nil {
|
|
logger.Println(err)
|
|
} else {
|
|
defer func() {
|
|
_ = atomicallyExecute(ac.rtcPeerConnectionMapFlag, func() (err error) {
|
|
if _, ok := ac.rtcPeerConnections[id]; ok {
|
|
if closeErr := ac.rtcPeerConnections[id].Close(); closeErr != nil {
|
|
err = closeErr
|
|
logger.Println("peer connection close error", closeErr)
|
|
}
|
|
}
|
|
delete(ac.rtcPeerConnections, id)
|
|
return
|
|
})
|
|
}()
|
|
}
|
|
logger.Printf("peer %s is leaving the squad\n", id)
|
|
_ = atomicallyExecute(ac.dataChannelMapFlag, func() (err error) {
|
|
if _, ok := ac.audiChannelsDataChannels[id]; ok {
|
|
ac.audiChannelsDataChannels[id].DataChannel.Close()
|
|
}
|
|
delete(ac.audiChannelsDataChannels, id)
|
|
return
|
|
})
|
|
_ = atomicallyExecute(ac.localSDMapFlag, func() (err error) {
|
|
delete(ac.localSD, id)
|
|
return
|
|
})
|
|
_ = atomicallyExecute(ac.candidateFlag, func() (err error) {
|
|
delete(ac.pendingCandidates, id)
|
|
return
|
|
})
|
|
_ = atomicallyExecute(ac.audioSenderFlag, func() (err error) {
|
|
for peerId, peerSender := range ac.audioTransceiver {
|
|
if peerId != id {
|
|
logger.Println("senders", peerSender)
|
|
c := 0
|
|
for i, sender := range peerSender {
|
|
if sender.ID == id {
|
|
if senderErr := sender.Transceiver.Sender().Stop(); senderErr != nil {
|
|
logger.Println(senderErr)
|
|
}
|
|
if transceiverErr := sender.Transceiver.Stop(); transceiverErr != nil {
|
|
logger.Println("transceiverErr occured with video", transceiverErr)
|
|
}
|
|
peerSender[len(peerSender)-i-1], peerSender[i] = peerSender[i], peerSender[len(peerSender)-i-1]
|
|
c++
|
|
}
|
|
}
|
|
ac.audioTransceiver[peerId] = ac.audioTransceiver[peerId][:len(peerSender)-(c)]
|
|
logger.Println(ac.audioTransceiver[peerId])
|
|
}
|
|
}
|
|
for _, transceiver := range ac.audioTransceiver[id] {
|
|
if senderErr := transceiver.Transceiver.Sender().Stop(); senderErr != nil {
|
|
logger.Println(senderErr)
|
|
}
|
|
if stopErr := transceiver.Transceiver.Stop(); stopErr != nil {
|
|
logger.Println("transceiver audio stop error", stopErr)
|
|
}
|
|
}
|
|
delete(ac.audioTransceiver, id)
|
|
return
|
|
})
|
|
_ = atomicallyExecute(ac.remoteTracksFlag, func() (err error) {
|
|
delete(ac.remoteTracks, id)
|
|
return
|
|
})
|
|
}
|
|
|
|
func (ac *AudioChannel) negotiate(target string, sendDCMessage SendDCMessageFunc) {
|
|
logger.Println("------------------negotiate is called")
|
|
_ = atomicallyExecute(ac.rtcPeerConnectionMapFlag, func() (err error) {
|
|
if _, ok := ac.rtcPeerConnections[target]; !ok {
|
|
return
|
|
}
|
|
ac.rtcPeerConnections[target].makingOfferLock.Lock()
|
|
ac.rtcPeerConnections[target].makingOffer = true
|
|
ac.rtcPeerConnections[target].makingOfferLock.Unlock()
|
|
defer func() {
|
|
ac.rtcPeerConnections[target].makingOfferLock.Lock()
|
|
ac.rtcPeerConnections[target].makingOffer = false
|
|
ac.rtcPeerConnections[target].makingOfferLock.Unlock()
|
|
}()
|
|
|
|
for _, id := range ac.CurrentMembersId {
|
|
logger.Println("----------------- sending renego to peer with id", id)
|
|
if _, ok := ac.rtcPeerConnections[id]; !ok {
|
|
continue
|
|
}
|
|
connection := ac.rtcPeerConnections[id]
|
|
if connection.SignalingState() == webrtc.SignalingStateStable {
|
|
localSd, err := connection.CreateOffer(nil)
|
|
if err != nil {
|
|
logger.Println(err)
|
|
return err
|
|
}
|
|
if err = connection.SetLocalDescription(localSd); err != nil {
|
|
logger.Println(err)
|
|
return err
|
|
}
|
|
d, e := sendDCMessage(string(AUDIO_CHANNEL_WEBRTC_RENNEGOTIATION_OFFER), ac.ID, id, map[string]interface{}{
|
|
"from": ac.ID,
|
|
"to": id,
|
|
"sdp": localSd.SDP,
|
|
})
|
|
select {
|
|
case <-d:
|
|
case err = <-e:
|
|
logger.Println(err)
|
|
}
|
|
}
|
|
}
|
|
return
|
|
})
|
|
}
|
|
|
|
func (ac *AudioChannel) broadcastDatachannelMessage(from string, eventId string, payload map[string]interface{}) (done chan struct{}, errCh chan error) {
|
|
done, errCh = make(chan struct{}), make(chan error)
|
|
go func() {
|
|
bs, jsonErr := json.Marshal(&ZoneResponse{
|
|
Type: eventId,
|
|
From: ac.ID,
|
|
Payload: payload,
|
|
})
|
|
if jsonErr != nil {
|
|
errCh <- jsonErr
|
|
return
|
|
}
|
|
if err := atomicallyExecute(ac.dataChannelMapFlag, func() (err error) {
|
|
for id, dc := range ac.audiChannelsDataChannels {
|
|
if from != id {
|
|
if err = dc.DataChannel.SendText(string(bs)); err != nil {
|
|
return
|
|
}
|
|
}
|
|
}
|
|
return
|
|
}); err != nil {
|
|
errCh <- err
|
|
}
|
|
done <- struct{}{}
|
|
}()
|
|
return
|
|
}
|
|
|
|
func (ac *AudioChannel) HandleDataChannelEvents(from string, eventId string, payload map[string]interface{}) (err error) {
|
|
switch eventId {
|
|
case AUDIO_CHANNEL_USER_MUTE:
|
|
if err = atomicallyExecute(ac.remoteTracksFlag, func() (err error) {
|
|
if _, ok := ac.remoteTracks[from]; !ok {
|
|
err = fmt.Errorf("no corresponding remote tracks entry for id %s", from)
|
|
return
|
|
}
|
|
for _, track := range ac.remoteTracks[from] {
|
|
atomic.SwapInt32(track.rdv, 1)
|
|
}
|
|
return
|
|
}); err != nil {
|
|
return
|
|
}
|
|
done, errCh := ac.broadcastDatachannelMessage(from, AUDIO_CHANNEL_USER_MUTE, map[string]interface{}{
|
|
"userId": from,
|
|
})
|
|
select {
|
|
case <-done:
|
|
case err = <-errCh:
|
|
}
|
|
case AUDIO_CHANNEL_USER_UNMUTE:
|
|
if err = atomicallyExecute(ac.remoteTracksFlag, func() (err error) {
|
|
if _, ok := ac.remoteTracks[from]; !ok {
|
|
err = fmt.Errorf("no corresponding remote tracks entry for id %s", from)
|
|
return
|
|
}
|
|
for _, track := range ac.remoteTracks[from] {
|
|
atomic.SwapInt32(track.rdv, 0)
|
|
}
|
|
return
|
|
}); err != nil {
|
|
return
|
|
}
|
|
done, errCh := ac.broadcastDatachannelMessage(from, AUDIO_CHANNEL_USER_UNMUTE, map[string]interface{}{
|
|
"userId": from,
|
|
})
|
|
select {
|
|
case <-done:
|
|
case err = <-errCh:
|
|
}
|
|
case AUDIO_CHANNEL_USER_SPEAKING:
|
|
done, errCh := ac.broadcastDatachannelMessage(from, AUDIO_CHANNEL_USER_SPEAKING, map[string]interface{}{
|
|
"userId": from,
|
|
})
|
|
select {
|
|
case <-done:
|
|
case err = <-errCh:
|
|
}
|
|
case AUDIO_CHANNEL_USER_STOPPED_SPEAKING:
|
|
done, errCh := ac.broadcastDatachannelMessage(from, AUDIO_CHANNEL_USER_STOPPED_SPEAKING, map[string]interface{}{
|
|
"userId": from,
|
|
})
|
|
select {
|
|
case <-done:
|
|
case err = <-errCh:
|
|
}
|
|
}
|
|
return
|
|
}
|