import { readdir, readFile } from 'fs-extra' import { createServer, Server } from 'net' import { join } from 'path' import { createServer as createServerTLS, Server as ServerTLS } from 'tls' import { computeLowerResolutionsToTranscode, ffprobePromise, getLiveSegmentTime, getVideoStreamBitrate, getVideoStreamDimensionsInfo, getVideoStreamFPS } from '@server/helpers/ffmpeg' import { logger, loggerTagsFactory } from '@server/helpers/logger' import { CONFIG, registerConfigChangedHandler } from '@server/initializers/config' import { P2P_MEDIA_LOADER_PEER_VERSION, VIDEO_LIVE } from '@server/initializers/constants' import { UserModel } from '@server/models/user/user' import { VideoModel } from '@server/models/video/video' import { VideoLiveModel } from '@server/models/video/video-live' import { VideoLiveSessionModel } from '@server/models/video/video-live-session' import { VideoStreamingPlaylistModel } from '@server/models/video/video-streaming-playlist' import { MStreamingPlaylistVideo, MVideo, MVideoLiveSession, MVideoLiveVideo } from '@server/types/models' import { wait } from '@shared/core-utils' import { LiveVideoError, VideoState, VideoStreamingPlaylistType } from '@shared/models' import { federateVideoIfNeeded } from '../activitypub/videos' import { JobQueue } from '../job-queue' import { generateHLSMasterPlaylistFilename, generateHlsSha256SegmentsFilename, getLiveReplayBaseDirectory } from '../paths' import { PeerTubeSocket } from '../peertube-socket' import { LiveQuotaStore } from './live-quota-store' import { cleanupPermanentLive } from './live-utils' import { MuxingSession } from './shared' const NodeRtmpSession = require('node-media-server/src/node_rtmp_session') const context = require('node-media-server/src/node_core_ctx') const nodeMediaServerLogger = require('node-media-server/src/node_core_logger') // Disable node media server logs nodeMediaServerLogger.setLogType(0) const config = { rtmp: { port: CONFIG.LIVE.RTMP.PORT, chunk_size: VIDEO_LIVE.RTMP.CHUNK_SIZE, gop_cache: VIDEO_LIVE.RTMP.GOP_CACHE, ping: VIDEO_LIVE.RTMP.PING, ping_timeout: VIDEO_LIVE.RTMP.PING_TIMEOUT } } const lTags = loggerTagsFactory('live') class LiveManager { private static instance: LiveManager private readonly muxingSessions = new Map() private readonly videoSessions = new Map() private rtmpServer: Server private rtmpsServer: ServerTLS private running = false private constructor () { } init () { const events = this.getContext().nodeEvent events.on('postPublish', (sessionId: string, streamPath: string) => { logger.debug('RTMP received stream', { id: sessionId, streamPath, ...lTags(sessionId) }) const splittedPath = streamPath.split('/') if (splittedPath.length !== 3 || splittedPath[1] !== VIDEO_LIVE.RTMP.BASE_PATH) { logger.warn('Live path is incorrect.', { streamPath, ...lTags(sessionId) }) return this.abortSession(sessionId) } const session = this.getContext().sessions.get(sessionId) this.handleSession(sessionId, session.inputOriginUrl + streamPath, splittedPath[2]) .catch(err => logger.error('Cannot handle sessions.', { err, ...lTags(sessionId) })) }) events.on('donePublish', sessionId => { logger.info('Live session ended.', { sessionId, ...lTags(sessionId) }) }) registerConfigChangedHandler(() => { if (!this.running && CONFIG.LIVE.ENABLED === true) { this.run().catch(err => logger.error('Cannot run live server.', { err })) return } if (this.running && CONFIG.LIVE.ENABLED === false) { this.stop() } }) // Cleanup broken lives, that were terminated by a server restart for example this.handleBrokenLives() .catch(err => logger.error('Cannot handle broken lives.', { err, ...lTags() })) } async run () { this.running = true if (CONFIG.LIVE.RTMP.ENABLED) { logger.info('Running RTMP server on port %d', CONFIG.LIVE.RTMP.PORT, lTags()) this.rtmpServer = createServer(socket => { const session = new NodeRtmpSession(config, socket) session.inputOriginUrl = 'rtmp://127.0.0.1:' + CONFIG.LIVE.RTMP.PORT session.run() }) this.rtmpServer.on('error', err => { logger.error('Cannot run RTMP server.', { err, ...lTags() }) }) this.rtmpServer.listen(CONFIG.LIVE.RTMP.PORT, CONFIG.LIVE.RTMP.HOSTNAME) } if (CONFIG.LIVE.RTMPS.ENABLED) { logger.info('Running RTMPS server on port %d', CONFIG.LIVE.RTMPS.PORT, lTags()) const [ key, cert ] = await Promise.all([ readFile(CONFIG.LIVE.RTMPS.KEY_FILE), readFile(CONFIG.LIVE.RTMPS.CERT_FILE) ]) const serverOptions = { key, cert } this.rtmpsServer = createServerTLS(serverOptions, socket => { const session = new NodeRtmpSession(config, socket) session.inputOriginUrl = 'rtmps://127.0.0.1:' + CONFIG.LIVE.RTMPS.PORT session.run() }) this.rtmpsServer.on('error', err => { logger.error('Cannot run RTMPS server.', { err, ...lTags() }) }) this.rtmpsServer.listen(CONFIG.LIVE.RTMPS.PORT, CONFIG.LIVE.RTMPS.HOSTNAME) } } stop () { this.running = false if (this.rtmpServer) { logger.info('Stopping RTMP server.', lTags()) this.rtmpServer.close() this.rtmpServer = undefined } if (this.rtmpsServer) { logger.info('Stopping RTMPS server.', lTags()) this.rtmpsServer.close() this.rtmpsServer = undefined } // Sessions is an object this.getContext().sessions.forEach((session: any) => { if (session instanceof NodeRtmpSession) { session.stop() } }) } isRunning () { return !!this.rtmpServer } stopSessionOf (videoId: number, error: LiveVideoError | null) { const sessionId = this.videoSessions.get(videoId) if (!sessionId) return this.saveEndingSession(videoId, error) .catch(err => logger.error('Cannot save ending session.', { err, ...lTags(sessionId) })) this.videoSessions.delete(videoId) this.abortSession(sessionId) } private getContext () { return context } private abortSession (sessionId: string) { const session = this.getContext().sessions.get(sessionId) if (session) { session.stop() this.getContext().sessions.delete(sessionId) } const muxingSession = this.muxingSessions.get(sessionId) if (muxingSession) { // Muxing session will fire and event so we correctly cleanup the session muxingSession.abort() this.muxingSessions.delete(sessionId) } } private async handleSession (sessionId: string, inputUrl: string, streamKey: string) { const videoLive = await VideoLiveModel.loadByStreamKey(streamKey) if (!videoLive) { logger.warn('Unknown live video with stream key %s.', streamKey, lTags(sessionId)) return this.abortSession(sessionId) } const video = videoLive.Video if (video.isBlacklisted()) { logger.warn('Video is blacklisted. Refusing stream %s.', streamKey, lTags(sessionId, video.uuid)) return this.abortSession(sessionId) } // Cleanup old potential live (could happen with a permanent live) const oldStreamingPlaylist = await VideoStreamingPlaylistModel.loadHLSPlaylistByVideo(video.id) if (oldStreamingPlaylist) { if (!videoLive.permanentLive) throw new Error('Found previous session in a non permanent live: ' + video.uuid) await cleanupPermanentLive(video, oldStreamingPlaylist) } this.videoSessions.set(video.id, sessionId) const now = Date.now() const probe = await ffprobePromise(inputUrl) const [ { resolution, ratio }, fps, bitrate ] = await Promise.all([ getVideoStreamDimensionsInfo(inputUrl, probe), getVideoStreamFPS(inputUrl, probe), getVideoStreamBitrate(inputUrl, probe) ]) logger.info( '%s probing took %d ms (bitrate: %d, fps: %d, resolution: %d)', inputUrl, Date.now() - now, bitrate, fps, resolution, lTags(sessionId, video.uuid) ) const allResolutions = this.buildAllResolutionsToTranscode(resolution) logger.info( 'Will mux/transcode live video of original resolution %d.', resolution, { allResolutions, ...lTags(sessionId, video.uuid) } ) const streamingPlaylist = await this.createLivePlaylist(video, allResolutions) return this.runMuxingSession({ sessionId, videoLive, streamingPlaylist, inputUrl, fps, bitrate, ratio, allResolutions }) } private async runMuxingSession (options: { sessionId: string videoLive: MVideoLiveVideo streamingPlaylist: MStreamingPlaylistVideo inputUrl: string fps: number bitrate: number ratio: number allResolutions: number[] }) { const { sessionId, videoLive, streamingPlaylist, allResolutions, fps, bitrate, ratio, inputUrl } = options const videoUUID = videoLive.Video.uuid const localLTags = lTags(sessionId, videoUUID) const liveSession = await this.saveStartingSession(videoLive) const user = await UserModel.loadByLiveId(videoLive.id) LiveQuotaStore.Instance.addNewLive(user.id, videoLive.id) const muxingSession = new MuxingSession({ context: this.getContext(), user, sessionId, videoLive, streamingPlaylist, inputUrl, bitrate, ratio, fps, allResolutions }) muxingSession.on('master-playlist-created', () => this.publishAndFederateLive(videoLive, localLTags)) muxingSession.on('bad-socket-health', ({ videoId }) => { logger.error( 'Too much data in client socket stream (ffmpeg is too slow to transcode the video).' + ' Stopping session of video %s.', videoUUID, localLTags ) this.stopSessionOf(videoId, LiveVideoError.BAD_SOCKET_HEALTH) }) muxingSession.on('duration-exceeded', ({ videoId }) => { logger.info('Stopping session of %s: max duration exceeded.', videoUUID, localLTags) this.stopSessionOf(videoId, LiveVideoError.DURATION_EXCEEDED) }) muxingSession.on('quota-exceeded', ({ videoId }) => { logger.info('Stopping session of %s: user quota exceeded.', videoUUID, localLTags) this.stopSessionOf(videoId, LiveVideoError.QUOTA_EXCEEDED) }) muxingSession.on('ffmpeg-error', ({ videoId }) => { this.stopSessionOf(videoId, LiveVideoError.FFMPEG_ERROR) }) muxingSession.on('ffmpeg-end', ({ videoId }) => { this.onMuxingFFmpegEnd(videoId, sessionId) }) muxingSession.on('after-cleanup', ({ videoId }) => { this.muxingSessions.delete(sessionId) LiveQuotaStore.Instance.removeLive(user.id, videoLive.id) muxingSession.destroy() return this.onAfterMuxingCleanup({ videoId, liveSession }) .catch(err => logger.error('Error in end transmuxing.', { err, ...localLTags })) }) this.muxingSessions.set(sessionId, muxingSession) muxingSession.runMuxing() .catch(err => { logger.error('Cannot run muxing.', { err, ...localLTags }) this.abortSession(sessionId) }) } private async publishAndFederateLive (live: MVideoLiveVideo, localLTags: { tags: string[] }) { const videoId = live.videoId try { const video = await VideoModel.loadFull(videoId) logger.info('Will publish and federate live %s.', video.url, localLTags) video.state = VideoState.PUBLISHED video.publishedAt = new Date() await video.save() live.Video = video await wait(getLiveSegmentTime(live.latencyMode) * 1000 * VIDEO_LIVE.EDGE_LIVE_DELAY_SEGMENTS_NOTIFICATION) try { await federateVideoIfNeeded(video, false) } catch (err) { logger.error('Cannot federate live video %s.', video.url, { err, ...localLTags }) } PeerTubeSocket.Instance.sendVideoLiveNewState(video) } catch (err) { logger.error('Cannot save/federate live video %d.', videoId, { err, ...localLTags }) } } private onMuxingFFmpegEnd (videoId: number, sessionId: string) { this.videoSessions.delete(videoId) this.saveEndingSession(videoId, null) .catch(err => logger.error('Cannot save ending session.', { err, ...lTags(sessionId) })) } private async onAfterMuxingCleanup (options: { videoId: number | string liveSession?: MVideoLiveSession cleanupNow?: boolean // Default false }) { const { videoId, liveSession: liveSessionArg, cleanupNow = false } = options try { const fullVideo = await VideoModel.loadFull(videoId) if (!fullVideo) return const live = await VideoLiveModel.loadByVideoId(fullVideo.id) const liveSession = liveSessionArg ?? await VideoLiveSessionModel.findCurrentSessionOf(fullVideo.id) // On server restart during a live if (!liveSession.endDate) { liveSession.endDate = new Date() await liveSession.save() } JobQueue.Instance.createJob({ type: 'video-live-ending', payload: { videoId: fullVideo.id, replayDirectory: live.saveReplay ? await this.findReplayDirectory(fullVideo) : undefined, liveSessionId: liveSession.id, streamingPlaylistId: fullVideo.getHLSPlaylist()?.id, publishedAt: fullVideo.publishedAt.toISOString() } }, { delay: cleanupNow ? 0 : VIDEO_LIVE.CLEANUP_DELAY }) fullVideo.state = live.permanentLive ? VideoState.WAITING_FOR_LIVE : VideoState.LIVE_ENDED await fullVideo.save() PeerTubeSocket.Instance.sendVideoLiveNewState(fullVideo) await federateVideoIfNeeded(fullVideo, false) } catch (err) { logger.error('Cannot save/federate new video state of live streaming of video %d.', videoId, { err, ...lTags(videoId + '') }) } } private async handleBrokenLives () { const videoUUIDs = await VideoModel.listPublishedLiveUUIDs() for (const uuid of videoUUIDs) { await this.onAfterMuxingCleanup({ videoId: uuid, cleanupNow: true }) } } private async findReplayDirectory (video: MVideo) { const directory = getLiveReplayBaseDirectory(video) const files = await readdir(directory) if (files.length === 0) return undefined return join(directory, files.sort().reverse()[0]) } private buildAllResolutionsToTranscode (originResolution: number) { const resolutionsEnabled = CONFIG.LIVE.TRANSCODING.ENABLED ? computeLowerResolutionsToTranscode(originResolution, 'live') : [] return resolutionsEnabled.concat([ originResolution ]) } private async createLivePlaylist (video: MVideo, allResolutions: number[]): Promise { const playlist = await VideoStreamingPlaylistModel.loadOrGenerate(video) playlist.playlistFilename = generateHLSMasterPlaylistFilename(true) playlist.segmentsSha256Filename = generateHlsSha256SegmentsFilename(true) playlist.p2pMediaLoaderPeerVersion = P2P_MEDIA_LOADER_PEER_VERSION playlist.type = VideoStreamingPlaylistType.HLS playlist.assignP2PMediaLoaderInfoHashes(video, allResolutions) return playlist.save() } private saveStartingSession (videoLive: MVideoLiveVideo) { const liveSession = new VideoLiveSessionModel({ startDate: new Date(), liveVideoId: videoLive.videoId }) return liveSession.save() } private async saveEndingSession (videoId: number, error: LiveVideoError | null) { const liveSession = await VideoLiveSessionModel.findCurrentSessionOf(videoId) liveSession.endDate = new Date() liveSession.error = error return liveSession.save() } static get Instance () { return this.instance || (this.instance = new this()) } } // --------------------------------------------------------------------------- export { LiveManager }