69 lines
1.5 KiB
Go
69 lines
1.5 KiB
Go
// Package web serves the JavaScript player and WebRTC negotiation
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package web
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import (
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"log"
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"net/http"
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"github.com/gorilla/websocket"
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"gitlab.crans.org/nounous/ghostream/stream/webrtc"
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)
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var upgrader = websocket.Upgrader{
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ReadBufferSize: 1024,
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WriteBufferSize: 1024,
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}
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// clientDescription is sent by new client
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type clientDescription struct {
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WebRtcSdp webrtc.SessionDescription
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Stream string
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Quality string
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}
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// websocketHandler exchanges WebRTC SDP and viewer count
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func websocketHandler(w http.ResponseWriter, r *http.Request) {
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// Upgrade client connection to WebSocket
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conn, err := upgrader.Upgrade(w, r, nil)
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if err != nil {
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log.Printf("Failed to upgrade client to websocket: %s", err)
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return
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}
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for {
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// Get client description
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c := &clientDescription{}
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err = conn.ReadJSON(c)
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if err != nil {
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log.Printf("Failed to receive client description: %s", err)
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_ = conn.Close()
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return
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}
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// Get requested stream
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stream, err := streams.Get(c.Stream)
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if err != nil {
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log.Printf("Stream not found: %s", c.Stream)
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continue
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}
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// Get requested quality
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q, err := stream.GetQuality(c.Quality)
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if err != nil {
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log.Printf("Quality not found: %s", c.Quality)
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continue
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}
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// Exchange session descriptions with WebRTC stream server
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// FIXME: Add trickle ICE support
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q.WebRtcRemoteSdp <- c.WebRtcSdp
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localDescription := <-q.WebRtcLocalSdp
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// Send new local description
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if err := conn.WriteJSON(localDescription); err != nil {
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log.Println(err)
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continue
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}
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}
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}
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