mirror of
https://github.com/strukturag/nextcloud-spreed-signaling
synced 2024-05-15 20:16:34 +02:00
116 lines
4 KiB
Go
116 lines
4 KiB
Go
/**
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* Standalone signaling server for the Nextcloud Spreed app.
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* Copyright (C) 2024 struktur AG
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*
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* @author Joachim Bauch <bauch@struktur.de>
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*
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* @license GNU AGPL version 3 or any later version
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package signaling
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import (
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"context"
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"log"
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"strconv"
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"sync/atomic"
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"github.com/notedit/janus-go"
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)
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type mcuJanusRemoteSubscriber struct {
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mcuJanusSubscriber
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remote atomic.Pointer[mcuJanusRemotePublisher]
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}
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func (p *mcuJanusRemoteSubscriber) handleEvent(event *janus.EventMsg) {
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if videoroom := getPluginStringValue(event.Plugindata, pluginVideoRoom, "videoroom"); videoroom != "" {
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ctx := context.TODO()
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switch videoroom {
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case "destroyed":
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log.Printf("Remote subscriber %d: associated room has been destroyed, closing", p.handleId)
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go p.Close(ctx)
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case "event":
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// Handle renegotiations, but ignore other events like selected
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// substream / temporal layer.
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if getPluginStringValue(event.Plugindata, pluginVideoRoom, "configured") == "ok" &&
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event.Jsep != nil && event.Jsep["type"] == "offer" && event.Jsep["sdp"] != nil {
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p.listener.OnUpdateOffer(p, event.Jsep)
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}
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case "slow_link":
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// Ignore, processed through "handleSlowLink" in the general events.
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default:
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log.Printf("Unsupported videoroom event %s for remote subscriber %d: %+v", videoroom, p.handleId, event)
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}
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} else {
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log.Printf("Unsupported event for remote subscriber %d: %+v", p.handleId, event)
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}
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}
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func (p *mcuJanusRemoteSubscriber) handleHangup(event *janus.HangupMsg) {
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log.Printf("Remote subscriber %d received hangup (%s), closing", p.handleId, event.Reason)
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go p.Close(context.Background())
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}
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func (p *mcuJanusRemoteSubscriber) handleDetached(event *janus.DetachedMsg) {
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log.Printf("Remote subscriber %d received detached, closing", p.handleId)
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go p.Close(context.Background())
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}
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func (p *mcuJanusRemoteSubscriber) handleConnected(event *janus.WebRTCUpMsg) {
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log.Printf("Remote subscriber %d received connected", p.handleId)
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p.mcu.SubscriberConnected(p.Id(), p.publisher, p.streamType)
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}
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func (p *mcuJanusRemoteSubscriber) handleSlowLink(event *janus.SlowLinkMsg) {
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if event.Uplink {
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log.Printf("Remote subscriber %s (%d) is reporting %d lost packets on the uplink (Janus -> client)", p.listener.PublicId(), p.handleId, event.Lost)
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} else {
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log.Printf("Remote subscriber %s (%d) is reporting %d lost packets on the downlink (client -> Janus)", p.listener.PublicId(), p.handleId, event.Lost)
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}
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}
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func (p *mcuJanusRemoteSubscriber) handleMedia(event *janus.MediaMsg) {
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// Only triggered for publishers
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}
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func (p *mcuJanusRemoteSubscriber) NotifyReconnected() {
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ctx, cancel := context.WithTimeout(context.Background(), p.mcu.mcuTimeout)
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defer cancel()
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handle, pub, err := p.mcu.getOrCreateSubscriberHandle(ctx, p.publisher, p.streamType)
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if err != nil {
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// TODO(jojo): Retry?
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log.Printf("Could not reconnect remote subscriber for publisher %s: %s", p.publisher, err)
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p.Close(context.Background())
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return
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}
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p.handle = handle
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p.handleId = handle.Id
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p.roomId = pub.roomId
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p.sid = strconv.FormatUint(handle.Id, 10)
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p.listener.SubscriberSidUpdated(p)
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log.Printf("Subscriber %d for publisher %s reconnected on handle %d", p.id, p.publisher, p.handleId)
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}
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func (p *mcuJanusRemoteSubscriber) Close(ctx context.Context) {
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p.mcuJanusSubscriber.Close(ctx)
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if remote := p.remote.Swap(nil); remote != nil {
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remote.Close(context.Background())
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}
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}
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