webrtc connect with selected video.

internal/types/message/messages.go

@@ -15,6 +15,11 @@ type Message struct {
 // System
 /////////////////////////////
 
+type SystemWebRTC struct {
+	Event  string   `json:"event,omitempty"`
+	Videos []string `json:"videos"`
+}
+
 type SystemInit struct {
 	Event           string                 `json:"event,omitempty"`
 	SessionId       string                 `json:"session_id"`
@@ -22,6 +27,7 @@ type SystemInit struct {
 	ScreenSize      ScreenSize             `json:"screen_size"`
 	Sessions        map[string]SessionData `json:"sessions"`
 	ImplicitHosting bool                   `json:"implicit_hosting"`
+	WebRTC          SystemWebRTC           `json:"webrtc"`
 }
 
 type SystemAdmin struct {
@@ -43,7 +49,6 @@ type SignalProvide struct {
 	Event      string            `json:"event,omitempty"`
 	SDP        string            `json:"sdp"`
 	ICEServers []types.ICEServer `json:"iceservers"`
-	Videos     []string          `json:"videos"`
 	Video      string            `json:"video"`
 }
 

internal/webrtc/manager.go

@@ -391,7 +391,7 @@ func (manager *WebRTCManagerCtx) mediaEngine(videoID string) (*webrtc.MediaEngin
 	// all videos must have the same codec
 	video, ok := manager.capture.Video(videoID)
 	if !ok {
-		return nil, fmt.Errorf("default video track not found")
+		return nil, fmt.Errorf("selected video track not found")
 	}
 
 	videoCodec := video.Codec()

internal/websocket/handler/handler.go

@@ -48,7 +48,10 @@ func (h *MessageHandlerCtx) Message(session types.Session, raw []byte) bool {
 	switch header.Event {
 	// Signal Events
 	case event.SIGNAL_REQUEST:
-		err = h.signalRequest(session)
+		payload := &message.SignalVideo{}
+		err = utils.Unmarshal(payload, raw, func() error {
+			return h.signalRequest(session, payload)
+		})
 	case event.SIGNAL_ANSWER:
 		payload := &message.SignalAnswer{}
 		err = utils.Unmarshal(payload, raw, func() error {

internal/websocket/handler/signal.go

@@ -6,16 +6,19 @@ import (
 	"demodesk/neko/internal/types/message"
 )
 
-func (h *MessageHandlerCtx) signalRequest(session types.Session) error {
+func (h *MessageHandlerCtx) signalRequest(session types.Session, payload *message.SignalVideo) error {
 	if !session.Profile().CanWatch {
 		h.logger.Debug().Str("session_id", session.ID()).Msg("not allowed to watch")
 		return nil
 	}
 
+	// use default first video, if not provided
+	if payload.Video == "" {
 		videos := h.capture.VideoIDs()
-	defaultVideo := videos[0]
+		payload.Video = videos[0]
+	}
 
-	offer, err := h.webrtc.CreatePeer(session, defaultVideo)
+	offer, err := h.webrtc.CreatePeer(session, payload.Video)
 	if err != nil {
 		return err
 	}
@@ -25,8 +28,7 @@ func (h *MessageHandlerCtx) signalRequest(session types.Session) error {
 			Event:      event.SIGNAL_PROVIDE,
 			SDP:        offer.SDP,
 			ICEServers: h.webrtc.ICEServers(),
-			Videos:     videos,
-			Video:      defaultVideo,
+			Video:      payload.Video,
 		})
 }
 

internal/websocket/handler/system.go

@@ -45,6 +45,9 @@ func (h *MessageHandlerCtx) systemInit(session types.Session) error {
 			},
 			Sessions:        sessions,
 			ImplicitHosting: h.sessions.ImplicitHosting(),
+			WebRTC: message.SystemWebRTC{
+				Videos: h.capture.VideoIDs(),
+			},
 		})
 }