Update version to 0.1-rc.3

Mention alternative method to import hass cameras

README.md

@@ -140,8 +140,8 @@ Available modules:
 Available source types:
 
 - [rtsp](#source-rtsp) - `RTSP` and `RTSPS` cameras
-- [rtmp](#source-rtmp) - `RTMP` streams
+- [rtmp](#source-rtmp) - `RTMP` and `HTTP-FLV` streams
-- [ffmpeg](#source-ffmpeg) - FFmpeg integration (`MJPEG`, `HLS`, `files` and source types)
+- [ffmpeg](#source-ffmpeg) - FFmpeg integration (`MJPEG`, `HLS`, `files` and others)
 - [ffmpeg:device](#source-ffmpeg-device) - local USB Camera or Webcam
 - [exec](#source-exec) - advanced FFmpeg and GStreamer integration
 - [echo](#source-echo) - get stream link from bash or python
@@ -172,6 +172,8 @@ streams:
     - rtsp://admin:password@192.168.1.123/cam/realmonitor?channel=1&subtype=1
 ```
 
+**PS.** For disable bachannel just add `#backchannel=0` to end of RTSP link.
+
 #### Source: RTMP
 
 You can get stream from RTMP server, for example [Frigate](https://docs.frigate.video/configuration/rtmp). Support ONLY `H264` video codec without audio.
@@ -304,6 +306,8 @@ streams:
   aqara_g3: hass:Camera-Hub-G3-AB12
 ```
 
+More cameras, like [Tuya](https://www.home-assistant.io/integrations/tuya/), [ONVIF](https://www.home-assistant.io/integrations/onvif/), and possibly others can also be imported by using [this method](https://github.com/felipecrs/hass-expose-camera-stream-source#importing-home-assistant-cameras-to-go2rtc-andor-frigate).
+
 ### Module: API
 
 The HTTP API is the main part for interacting with the application. Default address: `http://127.0.0.1:1984/`.
@@ -321,9 +325,9 @@ api:
   static_dir: ""   # folder for static files (custom web interface)
 ```
 
-**PS. go2rtc** don't provide HTTPS or password protection. Use [Nginx](https://nginx.org/) or [Ngrok](#module-ngrok) or [Home Assistant Add-on](#go2rtc-home-assistant-add-on) for this tasks.
+**PS. go2rtc** doesn't provide HTTPS or password protection. Use [Nginx](https://nginx.org/) or [Ngrok](#module-ngrok) or [Home Assistant Add-on](#go2rtc-home-assistant-add-on) for this tasks.
 
-**PS2.** You can access microphone (for 2-way audio) only with HTTPS
+**PS2.** You can access microphone (for 2-way audio) only with HTTPS ([read more](https://stackoverflow.com/questions/52759992/how-to-access-camera-and-microphone-in-chrome-without-https)).
 
 ### Module: RTSP
 
@@ -385,13 +389,13 @@ ngrok:
   command: ...
 ```
 
-**Own TCP-tunnel**
+**Hard tech way 1. Own TCP-tunnel**
 
-If you have personal VPS, you can create TCP-tunnel and setup in the same way as "Static public IP". But use your VPS IP-address in YAML config.
+If you have personal [VPS](https://en.wikipedia.org/wiki/Virtual_private_server), you can create TCP-tunnel and setup in the same way as "Static public IP". But use your VPS IP-address in YAML config.
 
-**Using TURN-server**
+**Hard tech way 2. Using TURN-server**
 
-TODO...
+If you have personal [VPS](https://en.wikipedia.org/wiki/Virtual_private_server), you can install TURN server (e.g. [coturn](https://github.com/coturn/coturn), config [example](https://github.com/AlexxIT/WebRTC/wiki/Coturn-Example)).
 
 ```yaml
 webrtc:
@@ -564,13 +568,23 @@ iPad Safari     | H264, H265* | H264        | no
 Android Chrome  | H264        | H264        | H264
 masOS Hass App  | no          | no          | no
 
-- WebRTC audio codecs: `PCMU/8000`, `PCMA/8000`, `OPUS/48000/2`
-- MSE/MP4 audio codecs: not supported yet (should be: `AAC`)
 - Chrome H265: [read this](https://github.com/StaZhu/enable-chromium-hevc-hardware-decoding)
 - Edge H265: [read this](https://www.reddit.com/r/MicrosoftEdge/comments/v9iw8k/enable_hevc_support_in_edge/)
 - Desktop Safari H265: Menu > Develop > Experimental > WebRTC H265
 - iOS Safari H265: Settings > Safari > Advanced > Experimental > WebRTC H265
 
+**Audio**
+
+- WebRTC audio codecs: `PCMU/8000`, `PCMA/8000`, `OPUS/48000/2`
+- MSE/MP4 audio codecs: `AAC`
+
+## TIPS
+
+**Using apps for low RTSP delay**
+
+- `ffplay -fflags nobuffer -flags low_delay "rtsp://192.168.1.123:8554/camera1"`
+- VLC > Preferences > Input / Codecs > Default Caching Level: Lowest Latency
+
 ## FAQ
 
 **Q. What's the difference between go2rtc, WebRTC Camera and RTSPtoWebRTC?**

cmd/api/ws.go

@@ -64,22 +64,14 @@ func (ctx *Context) Close() {
 
 func (ctx *Context) Write(msg interface{}) {
 	ctx.mu.Lock()
-	defer ctx.mu.Unlock()
 
-	var err error
+	if data, ok := msg.([]byte); ok {
-
+		_ = ctx.Conn.WriteMessage(websocket.BinaryMessage, data)
-	switch msg := msg.(type) {
+	} else {
-	case *streamer.Message:
+		_ = ctx.Conn.WriteJSON(msg)
-		err = ctx.Conn.WriteJSON(msg)
-	case []byte:
-		err = ctx.Conn.WriteMessage(websocket.BinaryMessage, msg)
-	default:
-		return
 	}
 
-	if err != nil {
+	ctx.mu.Unlock()
-		//panic(err) // TODO: fix panic
-	}
 }
 
 func (ctx *Context) Error(err error) {

cmd/app/app.go

@@ -3,12 +3,16 @@ package app
 import (
 	"flag"
 	"github.com/rs/zerolog"
+	"github.com/rs/zerolog/log"
 	"gopkg.in/yaml.v3"
 	"io"
 	"os"
 	"runtime"
 )
 
+var Version = "0.1-rc.3"
+var UserAgent = "go2rtc/" + Version
+
 func Init() {
 	config := flag.String(
 		"config",
@@ -30,10 +34,19 @@ func Init() {
 		}
 	}
 
+	log.Logger = NewLogger(cfg.Mod["format"], cfg.Mod["level"])
+
+	modules = cfg.Mod
+
+	log.Info().Msgf("go2rtc version %s %s/%s", Version, runtime.GOOS, runtime.GOARCH)
+
+	path, _ := os.Getwd()
+	log.Debug().Str("cwd", path).Send()
+}
+
+func NewLogger(format string, level string) zerolog.Logger {
 	var writer io.Writer = os.Stdout
 
-	// styles
-	format := cfg.Mod["format"]
 	if format != "json" {
 		writer = zerolog.ConsoleWriter{
 			Out: writer, TimeFormat: "15:04:05.000",
@@ -43,18 +56,12 @@ func Init() {
 
 	zerolog.TimeFieldFormat = zerolog.TimeFormatUnixMs
 
-	lvl, err := zerolog.ParseLevel(cfg.Mod["level"])
+	lvl, err := zerolog.ParseLevel(level)
 	if err != nil || lvl == zerolog.NoLevel {
 		lvl = zerolog.InfoLevel
 	}
 
-	log = zerolog.New(writer).With().Timestamp().Logger().Level(lvl)
+	return zerolog.New(writer).With().Timestamp().Logger().Level(lvl)
-
-	modules = cfg.Mod
-
-	path, _ := os.Getwd()
-	log.Debug().Str("os", runtime.GOOS).Str("arch", runtime.GOARCH).
-		Str("cwd", path).Int("conf_size", len(data)).Msgf("[app]")
 }
 
 func LoadConfig(v interface{}) {
@@ -68,15 +75,13 @@ func LoadConfig(v interface{}) {
 func GetLogger(module string) zerolog.Logger {
 	if s, ok := modules[module]; ok {
 		lvl, err := zerolog.ParseLevel(s)
-		if err != nil {
+		if err == nil {
-			log.Warn().Err(err).Msg("[log]")
+			return log.Level(lvl)
-			return log
 		}
-
+		log.Warn().Err(err).Caller().Send()
-		return log.Level(lvl)
 	}
 
-	return log
+	return log.Logger
 }
 
 // internal
@@ -84,8 +89,5 @@ func GetLogger(module string) zerolog.Logger {
 // data - config content
 var data []byte
 
-// log - main logger
-var log zerolog.Logger
-
 // modules log levels
 var modules map[string]string

cmd/debug/stack.go

@@ -21,6 +21,7 @@ var stackSkip = [][]byte{
 	[]byte("created by net/http.(*Server).Serve"), // TODO: why two?
 
 	[]byte("created by github.com/AlexxIT/go2rtc/cmd/rtsp.Init"),
+	[]byte("created by github.com/AlexxIT/go2rtc/cmd/srtp.Init"),
 
 	// webrtc/api.go
 	[]byte("created by github.com/pion/ice/v2.NewTCPMuxDefault"),

cmd/exec/exec.go

@@ -4,6 +4,7 @@ import (
 	"crypto/md5"
 	"encoding/hex"
 	"errors"
+	"fmt"
 	"github.com/AlexxIT/go2rtc/cmd/app"
 	"github.com/AlexxIT/go2rtc/cmd/rtsp"
 	"github.com/AlexxIT/go2rtc/cmd/streams"
@@ -14,6 +15,7 @@ import (
 	"os"
 	"os/exec"
 	"strings"
+	"sync"
 	"time"
 )
 
@@ -23,22 +25,22 @@ func Init() {
 		return
 	}
 
-	rtsp.OnProducer = func(prod streamer.Producer) bool {
+	rtsp.HandleFunc(func(conn *pkg.Conn) bool {
-		if conn := prod.(*pkg.Conn); conn != nil {
+		waitersMu.Lock()
-			if waiter := waiters[conn.URL.Path]; waiter != nil {
+		waiter := waiters[conn.URL.Path]
-				waiter <- prod
+		waitersMu.Unlock()
-				return true
+
-			}
+		if waiter == nil {
+			return false
 		}
-		return false
+
-	}
+		waiter <- conn
+		return true
+	})
 
 	streams.HandleFunc("exec", Handle)
 
 	log = app.GetLogger("exec")
-
-	// TODO: add sync.Mutex
-	waiters = map[string]chan streamer.Producer{}
 }
 
 func Handle(url string) (streamer.Producer, error) {
@@ -55,13 +57,22 @@ func Handle(url string) (streamer.Producer, error) {
 
 	if log.Trace().Enabled() {
 		cmd.Stdout = os.Stdout
+	}
+	if log.Debug().Enabled() {
 		cmd.Stderr = os.Stderr
 	}
 
 	ch := make(chan streamer.Producer)
 
+	waitersMu.Lock()
 	waiters[path] = ch
-	defer delete(waiters, path)
+	waitersMu.Unlock()
+
+	defer func() {
+		waitersMu.Lock()
+		delete(waiters, path)
+		waitersMu.Unlock()
+	}()
 
 	log.Debug().Str("url", url).Msg("[exec] run")
 
@@ -72,11 +83,19 @@ func Handle(url string) (streamer.Producer, error) {
 		return nil, err
 	}
 
+	chErr := make(chan error)
+
+	go func() {
+		chErr <- cmd.Wait()
+	}()
+
 	select {
-	case <-time.After(time.Second * 15):
+	case <-time.After(time.Second * 60):
 		_ = cmd.Process.Kill()
 		log.Error().Str("url", url).Msg("[exec] timeout")
 		return nil, errors.New("timeout")
+	case err := <-chErr:
+		return nil, fmt.Errorf("exec: %s", err)
 	case prod := <-ch:
 		log.Debug().Stringer("launch", time.Since(ts)).Msg("[exec] run")
 		return prod, nil
@@ -86,4 +105,5 @@ func Handle(url string) (streamer.Producer, error) {
 // internal
 
 var log zerolog.Logger
-var waiters map[string]chan streamer.Producer
+var waiters = map[string]chan streamer.Producer{}
+var waitersMu sync.Mutex

cmd/ffmpeg/README.md

@@ -1,3 +1,17 @@
+## FFplay output
+
+[FFplay](https://stackoverflow.com/questions/27778678/what-are-mv-fd-aq-vq-sq-and-f-in-a-video-stream) `7.11 A-V:  0.003 fd=   1 aq=   21KB vq=  321KB sq=    0B f=0/0`:
+
+- `7.11` - master clock, is the time from start of the stream/video
+- `A-V` - av_diff, difference between audio and video timestamps
+- `fd` - frames dropped
+- `aq` - audio queue (0 - no delay)
+- `vq` - video queue (0 - no delay)
+- `sq` - subtitle queue
+- `f` - timestamp error correction rate (Not 100% sure)
+
+`M-V`, `M-A` means video stream only, audio stream only respectively.
+
 ## Devices Windows
 
 ```
@@ -41,3 +55,7 @@
 - https://trac.ffmpeg.org/wiki/DirectShow
 - https://stackoverflow.com/questions/53207692/libav-mjpeg-encoding-and-huffman-table
 - https://github.com/tuupola/esp_video/blob/master/README.md
+- https://github.com/leandromoreira/ffmpeg-libav-tutorial
+- https://www.reddit.com/user/VeritablePornocopium/comments/okw130/ffmpeg_with_libfdk_aac_for_windows_x64/
+- https://slhck.info/video/2017/02/24/vbr-settings.html
+- [HomeKit audio samples problem](https://superuser.com/questions/1290996/non-monotonous-dts-with-igndts-flag)

cmd/ffmpeg/ffmpeg.go

@@ -4,9 +4,11 @@ import (
 	"github.com/AlexxIT/go2rtc/cmd/app"
 	"github.com/AlexxIT/go2rtc/cmd/exec"
 	"github.com/AlexxIT/go2rtc/cmd/ffmpeg/device"
+	"github.com/AlexxIT/go2rtc/cmd/rtsp"
 	"github.com/AlexxIT/go2rtc/cmd/streams"
 	"github.com/AlexxIT/go2rtc/pkg/streamer"
 	"net/url"
+	"strconv"
 	"strings"
 )
 
@@ -23,40 +25,48 @@ func Init() {
 		// inputs
 		"file": "-re -stream_loop -1 -i {input}",
 		"http": "-fflags nobuffer -flags low_delay -i {input}",
-		"rtsp": "-fflags nobuffer -flags low_delay -rtsp_transport tcp -i {input}",
+		"rtsp": "-fflags nobuffer -flags low_delay -timeout 5000000 -user_agent go2rtc/ffmpeg -rtsp_transport tcp -i {input}",
 
 		// output
-		"output": "-rtsp_transport tcp -f rtsp {output}",
+		"output": "-user_agent ffmpeg/go2rtc -rtsp_transport tcp -f rtsp {output}",
 
 		// `-g 30` - group of picture, GOP, keyframe interval
 		// `-preset superfast` - we can't use ultrafast because it doesn't support `-profile main -level 4.1`
 		// `-tune zerolatency` - for minimal latency
 		// `-profile main -level 4.1` - most used streaming profile
 		// `-pix_fmt yuv420p` - if input pix format 4:2:2
-		"h264":       "-codec:v libx264 -g 30 -preset superfast -tune zerolatency -profile main -level 4.1 -pix_fmt yuv420p",
+		"h264":       "-c:v libx264 -g:v 30 -preset:v superfast -tune:v zerolatency -profile:v main -level:v 4.1 -pix_fmt:v yuv420p",
-		"h264/ultra": "-codec:v libx264 -g 30 -preset ultrafast -tune zerolatency",
+		"h264/ultra": "-c:v libx264 -g:v 30 -preset:v ultrafast -tune:v zerolatency",
-		"h264/high":  "-codec:v libx264 -g 30 -preset superfast -tune zerolatency",
+		"h264/high":  "-c:v libx264 -g:v 30 -preset:v superfast -tune:v zerolatency",
-		"h265":       "-codec:v libx265 -g 30 -preset ultrafast -tune zerolatency",
+		"h265":       "-c:v libx265 -g:v 30 -preset:v ultrafast -tune:v zerolatency",
-		"mjpeg":      "-codec:v mjpeg -force_duplicated_matrix 1 -huffman 0 -pix_fmt yuvj420p",
+		"mjpeg":      "-c:v mjpeg -force_duplicated_matrix:v 1 -huffman:v 0 -pix_fmt:v yuvj420p",
-		"opus":       "-codec:a libopus -ar 48000 -ac 2",
+		"opus":       "-c:a libopus -ar:a 48000 -ac:a 2",
-		"pcmu":       "-codec:a pcm_mulaw -ar 8000 -ac 1",
+		"pcmu":       "-c:a pcm_mulaw -ar:a 8000 -ac:a 1",
-		"pcmu/16000": "-codec:a pcm_mulaw -ar 16000 -ac 1",
+		"pcmu/16000": "-c:a pcm_mulaw -ar:a 16000 -ac:a 1",
-		"pcmu/48000": "-codec:a pcm_mulaw -ar 48000 -ac 1",
+		"pcmu/48000": "-c:a pcm_mulaw -ar:a 48000 -ac:a 1",
-		"pcma":       "-codec:a pcm_alaw -ar 8000 -ac 1",
+		"pcma":       "-c:a pcm_alaw -ar:a 8000 -ac:a 1",
-		"pcma/16000": "-codec:a pcm_alaw -ar 16000 -ac 1",
+		"pcma/16000": "-c:a pcm_alaw -ar:a 16000 -ac:a 1",
-		"pcma/48000": "-codec:a pcm_alaw -ar 48000 -ac 1",
+		"pcma/48000": "-c:a pcm_alaw -ar:a 48000 -ac:a 1",
-		"aac/16000":  "-codec:a aac -ar 16000 -ac 1",
+		"aac":        "-c:a aac", // keep sample rate and channels
+		"aac/16000":  "-c:a aac -ar:a 16000 -ac:a 1",
 	}
 
 	app.LoadConfig(&cfg)
 
 	tpl := cfg.Mod
 
+	cmd := "exec:" + tpl["bin"] + " -hide_banner "
+
+	if app.GetLogger("exec").GetLevel() >= 0 {
+		cmd += "-v error "
+	}
+
 	streams.HandleFunc("ffmpeg", func(s string) (streamer.Producer, error) {
 		s = s[7:] // remove `ffmpeg:`
 
 		var query url.Values
 		var queryVideo, queryAudio bool
+
 		if i := strings.IndexByte(s, '#'); i > 0 {
 			query = parseQuery(s[i+1:])
 			queryVideo = query["video"] != nil
@@ -69,7 +79,7 @@ func Init() {
 		}
 
 		var input string
-		if i := strings.IndexByte(s, ':'); i > 0 {
+		if i := strings.Index(s, "://"); i > 0 {
 			switch s[:i] {
 			case "http", "https", "rtmp":
 				input = strings.Replace(tpl["http"], "{input}", s, 1)
@@ -86,52 +96,97 @@ func Init() {
 				}
 
 				input += strings.Replace(tpl["rtsp"], "{input}", s, 1)
+			default:
+				input = "-i " + s
 			}
+		} else if streams.Get(s) != nil {
+			s = "rtsp://localhost:" + rtsp.Port + "/" + s
+			switch {
+			case queryVideo && !queryAudio:
+				s += "?video"
+			case queryAudio && !queryVideo:
+				s += "?audio"
+			}
+			input = strings.Replace(tpl["rtsp"], "{input}", s, 1)
+		} else if strings.HasPrefix(s, "device?") {
+			var err error
+			input, err = device.GetInput(s)
+			if err != nil {
+				return nil, err
+			}
+		} else {
+			input = strings.Replace(tpl["file"], "{input}", s, 1)
 		}
 
-		if input == "" {
+		if _, ok := query["async"]; ok {
-			if strings.HasPrefix(s, "device?") {
+			input = "-use_wallclock_as_timestamps 1 -async 1 " + input
-				var err error
-				input, err = device.GetInput(s)
-				if err != nil {
-					return nil, err
-				}
-			} else {
-				input = strings.Replace(tpl["file"], "{input}", s, 1)
-			}
 		}
 
-		s = "exec:" + tpl["bin"] + " -hide_banner " + input
+		s = cmd + input
 
 		if query != nil {
 			for _, raw := range query["raw"] {
 				s += " " + raw
 			}
 
-			// TODO: multiple codecs via -map
+			for _, rotate := range query["rotate"] {
-			// s += fmt.Sprintf(" -map 0:v:0 -c:v:%d copy", i)
+				switch rotate {
-
+				case "90":
-			for _, video := range query["video"] {
+					s += " -vf transpose=1" // 90 degrees clockwise
-				if video == "copy" {
+				case "180":
-					s += " -codec:v copy"
+					s += " -vf transpose=1,transpose=1"
-				} else {
+				case "-90", "270":
-					s += " " + tpl[video]
+					s += " -vf transpose=2" // 90 degrees counterclockwise
 				}
+				break
 			}
 
-			for _, audio := range query["audio"] {
+			switch len(query["video"]) {
-				if audio == "copy" {
+			case 0:
-					s += " -codec:a copy"
-				} else {
-					s += " " + tpl[audio]
-				}
-			}
-
-			switch {
-			case queryVideo && !queryAudio:
-				s += " -an"
-			case queryAudio && !queryVideo:
 				s += " -vn"
+			case 1:
+				if len(query["audio"]) > 1 {
+					s += " -map 0:v:0"
+				}
+				for _, video := range query["video"] {
+					if video == "copy" {
+						s += " -c:v copy"
+					} else {
+						s += " " + tpl[video]
+					}
+				}
+			default:
+				for i, video := range query["video"] {
+					if video == "copy" {
+						s += " -map 0:v:0 -c:v:" + strconv.Itoa(i) + " copy"
+					} else {
+						s += " -map 0:v:0 " + strings.ReplaceAll(tpl[video], ":v ", ":v:"+strconv.Itoa(i)+" ")
+					}
+				}
+			}
+
+			switch len(query["audio"]) {
+			case 0:
+				s += " -an"
+			case 1:
+				if len(query["video"]) > 1 {
+					s += " -map 0:a:0"
+				}
+				for _, audio := range query["audio"] {
+					if audio == "copy" {
+						s += " -c:a copy"
+					} else {
+						s += " " + tpl[audio]
+					}
+				}
+			default:
+				for i, audio := range query["audio"] {
+					if audio == "copy" {
+						s += " -map 0:a:0 -c:a:" + strconv.Itoa(i) + " copy"
+					} else {
+						s += " -map 0:a:0 " + strings.ReplaceAll(tpl[audio], ":a ", ":a:"+strconv.Itoa(i)+" ")
+					}
+				}
 			}
 		} else {
 			s += " -c copy"

cmd/hass/api.go

@@ -55,6 +55,10 @@ func initAPI() {
 		// /stream/{id}/channel/0/webrtc
 		default:
 			i := strings.IndexByte(r.RequestURI[8:], '/')
+			if i <= 0 {
+				log.Warn().Msgf("wrong request: %s", r.RequestURI)
+				return
+			}
 			name := r.RequestURI[8 : 8+i]
 
 			stream := streams.Get(name)

cmd/homekit/api.go

@@ -5,8 +5,8 @@ import (
 	"fmt"
 	"github.com/AlexxIT/go2rtc/cmd/app/store"
 	"github.com/AlexxIT/go2rtc/cmd/streams"
-	"github.com/AlexxIT/go2rtc/pkg/homekit"
+	"github.com/AlexxIT/go2rtc/pkg/hap"
-	"github.com/AlexxIT/go2rtc/pkg/homekit/mdns"
+	"github.com/AlexxIT/go2rtc/pkg/hap/mdns"
 	"net/http"
 	"net/url"
 	"strings"
@@ -54,91 +54,82 @@ func apiHandler(w http.ResponseWriter, r *http.Request) {
 			items = append(items, device)
 		}
 
-		_= json.NewEncoder(w).Encode(items)
+		_ = json.NewEncoder(w).Encode(items)
 
 	case "POST":
 		// TODO: post params...
 
 		id := r.URL.Query().Get("id")
 		pin := r.URL.Query().Get("pin")
-
-		client, err := homekit.Pair(id, pin)
-		if err != nil {
-			// log error
-			log.Error().Err(err).Msg("[api.homekit] pair")
-			// response error
-			_, err = w.Write([]byte(err.Error()))
-			return
-		}
-
 		name := r.URL.Query().Get("name")
-		dict := store.GetDict("streams")
+		if err := hkPair(id, pin, name); err != nil {
-		dict[name] = client.URL()
+			log.Error().Err(err).Caller().Send()
-		if err = store.Set("streams", dict); err != nil {
-			// log error
-			log.Error().Err(err).Msg("[api.homekit] save to store")
-			// response error
 			_, err = w.Write([]byte(err.Error()))
 		}
 
-		streams.New(name, client.URL())
-
 	case "DELETE":
 		src := r.URL.Query().Get("src")
-		dict := store.GetDict("streams")
+		if err := hkDelete(src); err != nil {
-		for name, rawURL := range dict {
+			log.Error().Err(err).Caller().Send()
-			if name != src {
+			_, err = w.Write([]byte(err.Error()))
-				continue
-			}
-
-			client, err := homekit.NewClient(rawURL.(string))
-			if err != nil {
-				// log error
-				log.Error().Err(err).Msg("[api.homekit] new client")
-				// response error
-				_, err = w.Write([]byte(err.Error()))
-				return
-			}
-
-			if err = client.Dial(); err != nil {
-				// log error
-				log.Error().Err(err).Msg("[api.homekit] client dial")
-				// response error
-				_, err = w.Write([]byte(err.Error()))
-				return
-			}
-
-			go client.Handle()
-
-			if err = client.ListPairings(); err != nil {
-				// log error
-				log.Error().Err(err).Msg("[api.homekit] unpair")
-				// response error
-				_, err = w.Write([]byte(err.Error()))
-				return
-			}
-
-			if err = client.DeletePairing(client.ClientID); err != nil {
-				// log error
-				log.Error().Err(err).Msg("[api.homekit] unpair")
-				// response error
-				_, err = w.Write([]byte(err.Error()))
-			}
-
-			delete(dict, name)
-
-			if err = store.Set("streams", dict); err != nil {
-				// log error
-				log.Error().Err(err).Msg("[api.homekit] store set")
-				// response error
-				_, err = w.Write([]byte(err.Error()))
-			}
-
-			return
 		}
 	}
 }
 
+func hkPair(deviceID, pin, name string) (err error) {
+	var conn *hap.Conn
+
+	if conn, err = hap.Pair(deviceID, pin); err != nil {
+		return
+	}
+
+	streams.New(name, conn.URL())
+
+	dict := store.GetDict("streams")
+	dict[name] = conn.URL()
+
+	return store.Set("streams", dict)
+}
+
+func hkDelete(name string) (err error) {
+	dict := store.GetDict("streams")
+	for key, rawURL := range dict {
+		if key != name {
+			continue
+		}
+
+		var conn *hap.Conn
+
+		if conn, err = hap.NewConn(rawURL.(string)); err != nil {
+			return
+		}
+
+		if err = conn.Dial(); err != nil {
+			return
+		}
+
+		go func() {
+			if err = conn.Handle(); err != nil {
+				log.Warn().Err(err).Caller().Send()
+			}
+		}()
+
+		if err = conn.ListPairings(); err != nil {
+			return
+		}
+
+		if err = conn.DeletePairing(conn.ClientID); err != nil {
+			log.Error().Err(err).Caller().Send()
+		}
+
+		delete(dict, name)
+
+		return store.Set("streams", dict)
+	}
+
+	return nil
+}
+
 type Device struct {
 	ID     string `json:"id"`
 	Name   string `json:"name"`

cmd/homekit/homekit.go

@@ -3,6 +3,7 @@ package homekit
 import (
 	"github.com/AlexxIT/go2rtc/cmd/api"
 	"github.com/AlexxIT/go2rtc/cmd/app"
+	"github.com/AlexxIT/go2rtc/cmd/srtp"
 	"github.com/AlexxIT/go2rtc/cmd/streams"
 	"github.com/AlexxIT/go2rtc/pkg/homekit"
 	"github.com/AlexxIT/go2rtc/pkg/streamer"
@@ -20,20 +21,12 @@ func Init() {
 var log zerolog.Logger
 
 func streamHandler(url string) (streamer.Producer, error) {
-	client, err := homekit.NewClient(url)
+	conn, err := homekit.NewClient(url, srtp.Server)
 	if err != nil {
 		return nil, err
 	}
-	if err = client.Dial(); err != nil {
+	if err = conn.Dial();err!=nil{
 		return nil, err
 	}
-
+	return conn, nil
-	// start gorutine for reading responses from camera
-	go func() {
-		if err = client.Handle(); err != nil {
-			log.Warn().Err(err).Msg("[homekit] client")
-		}
-	}()
-
-	return &Producer{client: client}, nil
 }

cmd/homekit/producer.go

@@ -1,189 +0,0 @@
-package homekit
-
-import (
-	"errors"
-	"fmt"
-	"github.com/AlexxIT/go2rtc/cmd/srtp"
-	"github.com/AlexxIT/go2rtc/pkg/homekit"
-	"github.com/AlexxIT/go2rtc/pkg/homekit/camera"
-	pkg "github.com/AlexxIT/go2rtc/pkg/srtp"
-	"github.com/AlexxIT/go2rtc/pkg/streamer"
-	"github.com/brutella/hap/characteristic"
-	"github.com/brutella/hap/rtp"
-	"net"
-	"strconv"
-)
-
-type Producer struct {
-	streamer.Element
-
-	client *homekit.Client
-	medias []*streamer.Media
-	tracks []*streamer.Track
-
-	sessions []*pkg.Session
-}
-
-func (c *Producer) GetMedias() []*streamer.Media {
-	if c.medias == nil {
-		c.medias = c.getMedias()
-	}
-
-	return c.medias
-}
-
-func (c *Producer) GetTrack(media *streamer.Media, codec *streamer.Codec) *streamer.Track {
-	for _, track := range c.tracks {
-		if track.Codec == codec {
-			return track
-		}
-	}
-
-	track := &streamer.Track{Codec: codec, Direction: media.Direction}
-	c.tracks = append(c.tracks, track)
-	return track
-}
-
-func (c *Producer) Start() error {
-	if c.tracks == nil {
-		return errors.New("producer without tracks")
-	}
-
-	// get our server local IP-address
-	host, _, err := net.SplitHostPort(c.client.LocalAddr())
-	if err != nil {
-		return err
-	}
-
-	// get our server SRTP port
-	port, err := strconv.Atoi(srtp.Port)
-	if err != nil {
-		return err
-	}
-
-	// setup HomeKit stream session
-	hkSession := camera.NewSession()
-	hkSession.SetLocalEndpoint(host, uint16(port))
-
-	// create client for processing camera accessory
-	cam := camera.NewClient(c.client)
-	// try to start HomeKit stream
-	if err = cam.StartStream2(hkSession); err != nil {
-		panic(err) // TODO: fixme
-	}
-
-	// SRTP Video Session
-	vs := &pkg.Session{
-		LocalSSRC:  hkSession.Config.Video.RTP.Ssrc,
-		RemoteSSRC: hkSession.Answer.SsrcVideo,
-		Track:      c.tracks[0],
-	}
-	if err = vs.SetKeys(
-		hkSession.Offer.Video.MasterKey, hkSession.Offer.Video.MasterSalt,
-		hkSession.Answer.Video.MasterKey, hkSession.Answer.Video.MasterSalt,
-	); err != nil {
-		return err
-	}
-
-	// SRTP Audio Session
-	as := &pkg.Session{
-		LocalSSRC:  hkSession.Config.Audio.RTP.Ssrc,
-		RemoteSSRC: hkSession.Answer.SsrcAudio,
-		Track:      &streamer.Track{},
-	}
-	if err = as.SetKeys(
-		hkSession.Offer.Audio.MasterKey, hkSession.Offer.Audio.MasterSalt,
-		hkSession.Answer.Audio.MasterKey, hkSession.Answer.Audio.MasterSalt,
-	); err != nil {
-		return err
-	}
-
-	srtp.AddSession(vs)
-	srtp.AddSession(as)
-
-	c.sessions = []*pkg.Session{vs, as}
-
-	return nil
-}
-
-func (c *Producer) Stop() error {
-	err := c.client.Close()
-
-	for _, session := range c.sessions {
-		srtp.RemoveSession(session)
-	}
-
-	return err
-}
-
-func (c *Producer) getMedias() []*streamer.Media {
-	var medias []*streamer.Media
-
-	accs, err := c.client.GetAccessories()
-	acc := accs[0]
-	if err != nil {
-		panic(err)
-	}
-
-	// get supported video config (not really necessary)
-	char := acc.GetCharacter(characteristic.TypeSupportedVideoStreamConfiguration)
-	v1 := &rtp.VideoStreamConfiguration{}
-	if err = char.ReadTLV8(v1); err != nil {
-		panic(err)
-	}
-
-	for _, hkCodec := range v1.Codecs {
-		codec := &streamer.Codec{ClockRate: 90000}
-
-		switch hkCodec.Type {
-		case rtp.VideoCodecType_H264:
-			codec.Name = streamer.CodecH264
-		default:
-			panic(fmt.Sprintf("unknown codec: %d", hkCodec.Type))
-		}
-
-		media := &streamer.Media{
-			Kind: streamer.KindVideo, Direction: streamer.DirectionSendonly,
-			Codecs: []*streamer.Codec{codec},
-		}
-		medias = append(medias, media)
-	}
-
-	char = acc.GetCharacter(characteristic.TypeSupportedAudioStreamConfiguration)
-	v2 := &rtp.AudioStreamConfiguration{}
-	if err = char.ReadTLV8(v2); err != nil {
-		panic(err)
-	}
-
-	for _, hkCodec := range v2.Codecs {
-		codec := &streamer.Codec{
-			Channels: uint16(hkCodec.Parameters.Channels),
-		}
-
-		switch hkCodec.Type {
-		case rtp.AudioCodecType_AAC_ELD:
-			codec.Name = streamer.CodecAAC
-		default:
-			panic(fmt.Sprintf("unknown codec: %d", hkCodec.Type))
-		}
-
-		switch hkCodec.Parameters.Samplerate {
-		case rtp.AudioCodecSampleRate8Khz:
-			codec.ClockRate = 8000
-		case rtp.AudioCodecSampleRate16Khz:
-			codec.ClockRate = 16000
-		case rtp.AudioCodecSampleRate24Khz:
-			codec.ClockRate = 24000
-		default:
-			panic(fmt.Sprintf("unknown clockrate: %d", hkCodec.Parameters.Samplerate))
-		}
-
-		media := &streamer.Media{
-			Kind: streamer.KindAudio, Direction: streamer.DirectionSendonly,
-			Codecs: []*streamer.Codec{codec},
-		}
-		medias = append(medias, media)
-	}
-
-	return medias
-}

cmd/mjpeg/mjpeg.go

@@ -10,12 +10,47 @@ import (
 )
 
 func Init() {
-	api.HandleFunc("api/stream.mjpeg", handler)
+	api.HandleFunc("api/frame.jpeg", handlerKeyframe)
+	api.HandleFunc("api/stream.mjpeg", handlerStream)
+}
+
+func handlerKeyframe(w http.ResponseWriter, r *http.Request) {
+	src := r.URL.Query().Get("src")
+	stream := streams.GetOrNew(src)
+	if stream == nil {
+		return
+	}
+
+	exit := make(chan []byte)
+
+	cons := &mjpeg.Consumer{}
+	cons.Listen(func(msg interface{}) {
+		switch msg := msg.(type) {
+		case []byte:
+			exit <- msg
+		}
+	})
+
+	if err := stream.AddConsumer(cons); err != nil {
+		log.Error().Err(err).Caller().Send()
+		return
+	}
+
+	data := <-exit
+
+	stream.RemoveConsumer(cons)
+
+	w.Header().Set("Content-Type", "image/jpeg")
+	w.Header().Set("Content-Length", strconv.Itoa(len(data)))
+
+	if _, err := w.Write(data); err != nil {
+		log.Error().Err(err).Caller().Send()
+	}
 }
 
 const header = "--frame\r\nContent-Type: image/jpeg\r\nContent-Length: "
 
-func handler(w http.ResponseWriter, r *http.Request) {
+func handlerStream(w http.ResponseWriter, r *http.Request) {
 	src := r.URL.Query().Get("src")
 	stream := streams.GetOrNew(src)
 	if stream == nil {

cmd/mp4/mp4.go

@@ -9,6 +9,7 @@ import (
 	"net/http"
 	"strconv"
 	"strings"
+	"time"
 )
 
 func Init() {
@@ -35,35 +36,29 @@ func handlerKeyframe(w http.ResponseWriter, r *http.Request) {
 
 	exit := make(chan []byte)
 
-	cons := &mp4.Consumer{}
+	cons := &mp4.Keyframe{}
 	cons.Listen(func(msg interface{}) {
-		switch msg := msg.(type) {
+		if data, ok := msg.([]byte); ok && exit != nil {
-		case []byte:
+			exit <- data
-			exit <- msg
+			exit = nil
 		}
 	})
 
 	if err := stream.AddConsumer(cons); err != nil {
-		log.Error().Err(err).Msg("[api.keyframe] add consumer")
+		log.Error().Err(err).Caller().Send()
 		return
 	}
 
-	defer stream.RemoveConsumer(cons)
+	data := <-exit
 
-	w.Header().Set("Content-Type", cons.MimeType())
+	stream.RemoveConsumer(cons)
-
-	data, err := cons.Init()
-	if err != nil {
-		log.Error().Err(err).Msg("[api.keyframe] init")
-		return
-	}
-	data = append(data, <-exit...)
 
 	// Apple Safari won't show frame without length
 	w.Header().Set("Content-Length", strconv.Itoa(len(data)))
+	w.Header().Set("Content-Type", cons.MimeType)
 
 	if _, err := w.Write(data); err != nil {
-		log.Error().Err(err).Msg("[api.keyframe] add consumer")
+		log.Error().Err(err).Caller().Send()
 	}
 }
 
@@ -80,20 +75,20 @@ func handlerMP4(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	exit := make(chan struct{})
+	exit := make(chan error)
 
 	cons := &mp4.Consumer{}
 	cons.Listen(func(msg interface{}) {
-		switch msg := msg.(type) {
+		if data, ok := msg.([]byte); ok {
-		case []byte:
+			if _, err := w.Write(data); err != nil && exit != nil {
-			if _, err := w.Write(msg); err != nil {
+				exit <- err
-				exit <- struct{}{}
+				exit = nil
 			}
 		}
 	})
 
 	if err := stream.AddConsumer(cons); err != nil {
-		log.Error().Err(err).Msg("[api.mp4] add consumer")
+		log.Error().Err(err).Caller().Send()
 		return
 	}
 
@@ -103,18 +98,36 @@ func handlerMP4(w http.ResponseWriter, r *http.Request) {
 
 	data, err := cons.Init()
 	if err != nil {
-		log.Error().Err(err).Msg("[api.mp4] init")
+		log.Error().Err(err).Caller().Send()
 		return
 	}
 
 	if _, err = w.Write(data); err != nil {
-		log.Error().Err(err).Msg("[api.mp4] write")
+		log.Error().Err(err).Caller().Send()
 		return
 	}
 
-	<-exit
+	cons.Start()
 
-	log.Trace().Msg("[api.mp4] close")
+	var duration *time.Timer
+	if s := r.URL.Query().Get("duration"); s != "" {
+		if i, _ := strconv.Atoi(s); i > 0 {
+			duration = time.AfterFunc(time.Second*time.Duration(i), func() {
+				if exit != nil {
+					exit <- nil
+					exit = nil
+				}
+			})
+		}
+	}
+
+	err = <-exit
+
+	log.Trace().Err(err).Caller().Send()
+
+	if duration != nil {
+		duration.Stop()
+	}
 }
 
 func isChromeFirst(w http.ResponseWriter, r *http.Request) bool {

cmd/mp4/mse.go

@@ -9,6 +9,8 @@ import (
 
 const MsgTypeMSE = "mse" // fMP4
 
+const packetSize = 8192
+
 func handlerWS(ctx *api.Context, msg *streamer.Message) {
 	src := ctx.Request.URL.Query().Get("src")
 	stream := streams.GetOrNew(src)
@@ -21,14 +23,17 @@ func handlerWS(ctx *api.Context, msg *streamer.Message) {
 	cons.RemoteAddr = ctx.Request.RemoteAddr
 
 	cons.Listen(func(msg interface{}) {
-		switch msg.(type) {
+		if data, ok := msg.([]byte); ok {
-		case *streamer.Message, []byte:
+			for len(data) > packetSize {
-			ctx.Write(msg)
+				ctx.Write(data[:packetSize])
+				data = data[packetSize:]
+			}
+			ctx.Write(data)
 		}
 	})
 
 	if err := stream.AddConsumer(cons); err != nil {
-		log.Warn().Err(err).Msg("[api.mse] add consumer")
+		log.Warn().Err(err).Caller().Send()
 		ctx.Error(err)
 		return
 	}
@@ -37,16 +42,16 @@ func handlerWS(ctx *api.Context, msg *streamer.Message) {
 		stream.RemoveConsumer(cons)
 	})
 
-	ctx.Write(&streamer.Message{
+	ctx.Write(&streamer.Message{Type: MsgTypeMSE, Value: cons.MimeType()})
-		Type: MsgTypeMSE, Value: cons.MimeType(),
-	})
 
 	data, err := cons.Init()
 	if err != nil {
-		log.Warn().Err(err).Msg("[api.mse] init")
+		log.Warn().Err(err).Caller().Send()
 		ctx.Error(err)
 		return
 	}
 
 	ctx.Write(data)
+
+	cons.Start()
 }

cmd/rtmp/rtmp.go

@@ -8,6 +8,8 @@ import (
 
 func Init() {
 	streams.HandleFunc("rtmp", handle)
+	streams.HandleFunc("http", handle)
+	streams.HandleFunc("https", handle)
 }
 
 func handle(url string) (streamer.Producer, error) {

cmd/rtsp/rtsp.go

@@ -32,20 +32,43 @@ func Init() {
 
 	// RTSP server support
 	address := conf.Mod.Listen
-	if address != "" {
+	if address == "" {
-		_, Port, _ = net.SplitHostPort(address)
+		return
-
-		go worker(address)
 	}
+
+	ln, err := net.Listen("tcp", address)
+	if err != nil {
+		log.Error().Err(err).Msg("[rtsp] listen")
+		return
+	}
+
+	_, Port, _ = net.SplitHostPort(address)
+
+	log.Info().Str("addr", address).Msg("[rtsp] listen")
+
+	go func() {
+		for {
+			conn, err := ln.Accept()
+			if err != nil {
+				return
+			}
+			go tcpHandler(conn)
+		}
+	}()
+}
+
+type Handler func(conn *rtsp.Conn) bool
+
+func HandleFunc(handler Handler) {
+	handlers = append(handlers, handler)
 }
 
 var Port string
 
-var OnProducer func(conn streamer.Producer) bool // TODO: maybe rewrite...
-
 // internal
 
 var log zerolog.Logger
+var handlers []Handler
 
 func rtspHandler(url string) (streamer.Producer, error) {
 	backchannel := true
@@ -62,6 +85,8 @@ func rtspHandler(url string) (streamer.Producer, error) {
 		return nil, err
 	}
 
+	conn.UserAgent = app.UserAgent
+
 	if log.Trace().Enabled() {
 		conn.Listen(func(msg interface{}) {
 			switch msg := msg.(type) {
@@ -84,10 +109,10 @@ func rtspHandler(url string) (streamer.Producer, error) {
 		}
 
 		// second try without backchannel, we need to reconnect
+		conn.Backchannel = false
 		if err = conn.Dial(); err != nil {
 			return nil, err
 		}
-		conn.Backchannel = false
 		if err = conn.Describe(); err != nil {
 			return nil, err
 		}
@@ -96,101 +121,89 @@ func rtspHandler(url string) (streamer.Producer, error) {
 	return conn, nil
 }
 
-func worker(address string) {
+func tcpHandler(c net.Conn) {
-	srv, err := tcp.NewServer(address)
+	var name string
-	if err != nil {
+	var closer func()
-		log.Error().Err(err).Msg("[rtsp] listen")
-		return
-	}
 
-	log.Info().Str("addr", address).Msg("[rtsp] listen")
+	trace := log.Trace().Enabled()
 
-	srv.Listen(func(msg interface{}) {
+	conn := rtsp.NewServer(c)
-		switch msg.(type) {
+	conn.Listen(func(msg interface{}) {
-		case net.Conn:
+		if trace {
-			var name string
+			switch msg := msg.(type) {
-			var onDisconnect func()
+			case *tcp.Request:
+				log.Trace().Msgf("[rtsp] server request:\n%s", msg)
+			case *tcp.Response:
+				log.Trace().Msgf("[rtsp] server response:\n%s", msg)
+			}
+		}
 
-			trace := log.Trace().Enabled()
+		switch msg {
+		case rtsp.MethodDescribe:
+			name = conn.URL.Path[1:]
 
-			conn := rtsp.NewServer(msg.(net.Conn))
+			stream := streams.Get(name)
-			conn.Listen(func(msg interface{}) {
+			if stream == nil {
-				if trace {
-					switch msg := msg.(type) {
-					case *tcp.Request:
-						log.Trace().Msgf("[rtsp] server request:\n%s", msg)
-					case *tcp.Response:
-						log.Trace().Msgf("[rtsp] server response:\n%s", msg)
-					}
-				}
-
-				switch msg {
-				case rtsp.MethodDescribe:
-					name = conn.URL.Path[1:]
-
-					log.Debug().Str("stream", name).Msg("[rtsp] new consumer")
-
-					stream := streams.Get(name) // TODO: rewrite
-					if stream == nil {
-						return
-					}
-
-					initMedias(conn)
-
-					if err = stream.AddConsumer(conn); err != nil {
-						log.Warn().Err(err).Str("stream", name).Msg("[rtsp]")
-						return
-					}
-
-					onDisconnect = func() {
-						stream.RemoveConsumer(conn)
-					}
-
-				case rtsp.MethodAnnounce:
-					if OnProducer != nil {
-						if OnProducer(conn) {
-							return
-						}
-					}
-
-					name = conn.URL.Path[1:]
-
-					log.Debug().Str("stream", name).Msg("[rtsp] new producer")
-
-					stream := streams.Get(name)
-					if stream == nil {
-						return
-					}
-
-					stream.AddProducer(conn)
-
-					onDisconnect = func() {
-						stream.RemoveProducer(conn)
-					}
-
-				case streamer.StatePlaying:
-					log.Debug().Str("stream", name).Msg("[rtsp] start")
-				}
-			})
-
-			if err = conn.Accept(); err != nil {
-				log.Warn().Err(err).Msg("[rtsp] accept")
 				return
 			}
 
-			if err = conn.Handle(); err != nil {
+			log.Debug().Str("stream", name).Msg("[rtsp] new consumer")
-				//log.Warn().Err(err).Msg("[rtsp] handle server")
+
+			initMedias(conn)
+
+			if err := stream.AddConsumer(conn); err != nil {
+				log.Warn().Err(err).Str("stream", name).Msg("[rtsp]")
+				return
 			}
 
-			if onDisconnect != nil {
+			closer = func() {
-				onDisconnect()
+				stream.RemoveConsumer(conn)
 			}
 
-			log.Debug().Str("stream", name).Msg("[rtsp] disconnect")
+		case rtsp.MethodAnnounce:
+			name = conn.URL.Path[1:]
+
+			stream := streams.Get(name)
+			if stream == nil {
+				return
+			}
+
+			log.Debug().Str("stream", name).Msg("[rtsp] new producer")
+
+			stream.AddProducer(conn)
+
+			closer = func() {
+				stream.RemoveProducer(conn)
+			}
+
+		case streamer.StatePlaying:
+			log.Debug().Str("stream", name).Msg("[rtsp] start")
 		}
 	})
 
-	srv.Serve()
+	if err := conn.Accept(); err != nil {
+		log.Warn().Err(err).Caller().Send()
+		_ = conn.Close()
+		return
+	}
+
+	for _, handler := range handlers {
+		if handler(conn) {
+			return
+		}
+	}
+
+	if closer != nil {
+		if err := conn.Handle(); err != nil {
+			log.Debug().Err(err).Caller().Send()
+		}
+
+		closer()
+
+		log.Debug().Str("stream", name).Msg("[rtsp] disconnect")
+	}
+
+	_ = conn.Close()
 }
 
 func initMedias(conn *rtsp.Conn) {
@@ -198,16 +211,27 @@ func initMedias(conn *rtsp.Conn) {
 	for key, value := range conn.URL.Query() {
 		switch key {
 		case streamer.KindVideo, streamer.KindAudio:
-			for _, value := range value {
+			for _, name := range value {
+				name = strings.ToUpper(name)
+
+				// check aliases
+				switch name {
+				case "COPY":
+					name = "" // pass empty codecs list
+				case "MJPEG":
+					name = streamer.CodecJPEG
+				case "AAC":
+					name = streamer.CodecAAC
+				}
+
 				media := &streamer.Media{
 					Kind: key, Direction: streamer.DirectionRecvonly,
 				}
 
-				switch value {
+				// empty codecs match all codecs
-				case "", "copy": // pass empty codecs list
+				if name != "" {
-				default:
+					// empty clock rate and channels match any values
-					codec := streamer.NewCodec(value)
+					media.Codecs = []*streamer.Codec{{Name: name}}
-					media.Codecs = append(media.Codecs, codec)
 				}
 
 				conn.Medias = append(conn.Medias, media)

cmd/srtp/srtp.go

@@ -3,7 +3,6 @@ package srtp
 import (
 	"github.com/AlexxIT/go2rtc/cmd/app"
 	"github.com/AlexxIT/go2rtc/pkg/srtp"
-	"github.com/rs/zerolog"
 	"net"
 )
 
@@ -24,36 +23,23 @@ func Init() {
 		return
 	}
 
-	log = app.GetLogger("srtp")
+	log := app.GetLogger("srtp")
 
 	// create SRTP server (endpoint) for receiving video from HomeKit camera
 	conn, err := net.ListenPacket("udp", cfg.Mod.Listen)
 	if err != nil {
-		log.Warn().Err(err).Msg("[srtp] listen")
+		log.Warn().Err(err).Caller().Send()
 	}
 
 	log.Info().Str("addr", cfg.Mod.Listen).Msg("[srtp] listen")
 
-	_, Port, _ = net.SplitHostPort(cfg.Mod.Listen)
-
 	// run server
 	go func() {
-		server = &srtp.Server{}
+		Server = &srtp.Server{}
-		if err = server.Serve(conn); err != nil {
+		if err = Server.Serve(conn); err != nil {
-			log.Warn().Err(err).Msg("[srtp] serve")
+			log.Warn().Err(err).Caller().Send()
 		}
 	}()
 }
 
-var log zerolog.Logger
+var Server *srtp.Server
-var server *srtp.Server
-
-var Port string
-
-func AddSession(session *srtp.Session)  {
-	server.AddSession(session)
-}
-
-func RemoveSession(session *srtp.Session) {
-	server.RemoveSession(session)
-}

cmd/streams/handlers.go

@@ -4,30 +4,36 @@ import (
 	"fmt"
 	"github.com/AlexxIT/go2rtc/pkg/streamer"
 	"strings"
+	"sync"
 )
 
 type Handler func(url string) (streamer.Producer, error)
 
-var handlers map[string]Handler
+var handlers = map[string]Handler{}
+var handlersMu sync.Mutex
 
 func HandleFunc(scheme string, handler Handler) {
-	if handlers == nil {
+	handlersMu.Lock()
-		handlers = make(map[string]Handler)
-	}
 	handlers[scheme] = handler
+	handlersMu.Unlock()
+}
+
+func getHandler(url string) Handler {
+	i := strings.IndexByte(url, ':')
+	if i <= 0 { // TODO: i < 4 ?
+		return nil
+	}
+	handlersMu.Lock()
+	defer handlersMu.Unlock()
+	return handlers[url[:i]]
 }
 
 func HasProducer(url string) bool {
-	i := strings.IndexByte(url, ':')
+	return getHandler(url) != nil
-	if i <= 0 { // TODO: i < 4 ?
-		return false
-	}
-	return handlers[url[:i]] != nil
 }
 
 func GetProducer(url string) (streamer.Producer, error) {
-	i := strings.IndexByte(url, ':')
+	handler := getHandler(url)
-	handler := handlers[url[:i]]
 	if handler == nil {
 		return nil, fmt.Errorf("unsupported scheme: %s", url)
 	}

cmd/streams/producer.go

@@ -4,6 +4,7 @@ import (
 	"github.com/AlexxIT/go2rtc/pkg/streamer"
 	"strings"
 	"sync"
+	"time"
 )
 
 type state byte
@@ -13,6 +14,7 @@ const (
 	stateMedias
 	stateTracks
 	stateStart
+	stateExternal
 )
 
 type Producer struct {
@@ -24,8 +26,9 @@ type Producer struct {
 	element streamer.Producer
 	tracks  []*streamer.Track
 
-	state state
+	state   state
-	mx    sync.Mutex
+	mu      sync.Mutex
+	restart *time.Timer
 }
 
 func (p *Producer) SetSource(s string) {
@@ -36,16 +39,16 @@ func (p *Producer) SetSource(s string) {
 }
 
 func (p *Producer) GetMedias() []*streamer.Media {
-	p.mx.Lock()
+	p.mu.Lock()
-	defer p.mx.Unlock()
+	defer p.mu.Unlock()
 
 	if p.state == stateNone {
-		log.Debug().Str("url", p.url).Msg("[streams] probe producer")
+		log.Debug().Msgf("[streams] probe producer url=%s", p.url)
 
 		var err error
 		p.element, err = GetProducer(p.url)
 		if err != nil || p.element == nil {
-			log.Error().Err(err).Str("url", p.url).Msg("[streams] probe producer")
+			log.Error().Err(err).Caller().Send()
 			return nil
 		}
 
@@ -56,59 +59,127 @@ func (p *Producer) GetMedias() []*streamer.Media {
 }
 
 func (p *Producer) GetTrack(media *streamer.Media, codec *streamer.Codec) *streamer.Track {
-	p.mx.Lock()
+	p.mu.Lock()
-	defer p.mx.Unlock()
+	defer p.mu.Unlock()
 
-	if p.state == stateMedias {
+	if p.state == stateNone {
-		p.state = stateTracks
+		return nil
 	}
 
-	track := p.element.GetTrack(media, codec)
+	for _, track := range p.tracks {
-
+		if track.Codec == codec {
-	for _, t := range p.tracks {
-		if track == t {
 			return track
 		}
 	}
 
+	track := p.element.GetTrack(media, codec)
+	if track == nil {
+		return nil
+	}
+
 	p.tracks = append(p.tracks, track)
 
+	if p.state == stateMedias {
+		p.state = stateTracks
+	}
+
 	return track
 }
 
 // internals
 
 func (p *Producer) start() {
-	p.mx.Lock()
+	p.mu.Lock()
-	defer p.mx.Unlock()
+	defer p.mu.Unlock()
 
 	if p.state != stateTracks {
 		return
 	}
 
-	log.Debug().Str("url", p.url).Msg("[streams] start producer")
+	log.Debug().Msgf("[streams] start producer url=%s", p.url)
 
 	p.state = stateStart
 	go func() {
+		// safe read element while mu locked
 		if err := p.element.Start(); err != nil {
-			log.Warn().Err(err).Str("url", p.url).Msg("[streams] start")
+			log.Warn().Err(err).Caller().Send()
 		}
+		p.reconnect()
+	}()
+}
+
+func (p *Producer) reconnect() {
+	p.mu.Lock()
+	defer p.mu.Unlock()
+
+	if p.state != stateStart {
+		log.Trace().Msgf("[streams] stop reconnect url=%s", p.url)
+		return
+	}
+
+	log.Debug().Msgf("[streams] reconnect to url=%s", p.url)
+
+	var err error
+	p.element, err = GetProducer(p.url)
+	if err != nil || p.element == nil {
+		log.Debug().Err(err).Caller().Send()
+		// TODO: dynamic timeout
+		p.restart = time.AfterFunc(30*time.Second, p.reconnect)
+		return
+	}
+
+	medias := p.element.GetMedias()
+
+	// convert all old producer tracks to new tracks
+	for i, oldTrack := range p.tracks {
+		// match new element medias with old track codec
+		for _, media := range medias {
+			codec := media.MatchCodec(oldTrack.Codec)
+			if codec == nil {
+				continue
+			}
+
+			// move sink from old track to new track
+			newTrack := p.element.GetTrack(media, codec)
+			newTrack.GetSink(oldTrack)
+			p.tracks[i] = newTrack
+
+			break
+		}
+	}
+
+	go func() {
+		if err = p.element.Start(); err != nil {
+			log.Debug().Err(err).Caller().Send()
+		}
+		p.reconnect()
 	}()
 }
 
 func (p *Producer) stop() {
-	p.mx.Lock()
+	p.mu.Lock()
+	defer p.mu.Unlock()
 
-	log.Debug().Str("url", p.url).Msg("[streams] stop producer")
+	switch p.state {
+	case stateExternal:
+		log.Debug().Msgf("[streams] can't stop external producer")
+		return
+	case stateNone:
+		log.Debug().Msgf("[streams] can't stop none producer")
+		return
+	}
+
+	log.Debug().Msgf("[streams] stop producer url=%s", p.url)
 
 	if p.element != nil {
 		_ = p.element.Stop()
 		p.element = nil
-	} else {
-		log.Warn().Str("url", p.url).Msg("[streams] stop empty producer")
 	}
-	p.tracks = nil
+	if p.restart != nil {
-	p.state = stateNone
+		p.restart.Stop()
+		p.restart = nil
+	}
 
-	p.mx.Unlock()
+	p.state = stateNone
+	p.tracks = nil
 }

cmd/streams/stream.go

@@ -4,6 +4,7 @@ import (
 	"encoding/json"
 	"errors"
 	"github.com/AlexxIT/go2rtc/pkg/streamer"
+	"sync"
 )
 
 type Consumer struct {
@@ -14,6 +15,7 @@ type Consumer struct {
 type Stream struct {
 	producers []*Producer
 	consumers []*Consumer
+	mu        sync.Mutex
 }
 
 func NewStream(source interface{}) *Stream {
@@ -51,18 +53,19 @@ func (s *Stream) AddConsumer(cons streamer.Consumer) (err error) {
 	ic := len(s.consumers)
 
 	consumer := &Consumer{element: cons}
+	var producers []*Producer // matched producers for consumer
 
 	// Step 1. Get consumer medias
 	for icc, consMedia := range cons.GetMedias() {
 		log.Trace().Stringer("media", consMedia).
-			Msgf("[streams] consumer:%d:%d candidate", ic, icc)
+			Msgf("[streams] consumer=%d candidate=%d", ic, icc)
 
 	producers:
 		for ip, prod := range s.producers {
 			// Step 2. Get producer medias (not tracks yet)
 			for ipc, prodMedia := range prod.GetMedias() {
 				log.Trace().Stringer("media", prodMedia).
-					Msgf("[streams] producer:%d:%d candidate", ip, ipc)
+					Msgf("[streams] producer=%d candidate=%d", ip, ipc)
 
 				// Step 3. Match consumer/producer codecs list
 				prodCodec := prodMedia.MatchMedia(consMedia)
@@ -81,20 +84,24 @@ func (s *Stream) AddConsumer(cons streamer.Consumer) (err error) {
 					consTrack := consumer.element.AddTrack(consMedia, prodTrack)
 
 					consumer.tracks = append(consumer.tracks, consTrack)
+					producers = append(producers, prod)
 					break producers
 				}
 			}
 		}
 	}
 
-	// can't match tracks for consumer
+	if len(producers) == 0 {
-	if len(consumer.tracks) == 0 {
+		s.stopProducers()
 		return errors.New("couldn't find the matching tracks")
 	}
 
+	s.mu.Lock()
 	s.consumers = append(s.consumers, consumer)
+	s.mu.Unlock()
 
-	for _, prod := range s.producers {
+	// there may be duplicates, but that's not a problem
+	for _, prod := range producers {
 		prod.start()
 	}
 
@@ -102,12 +109,8 @@ func (s *Stream) AddConsumer(cons streamer.Consumer) (err error) {
 }
 
 func (s *Stream) RemoveConsumer(cons streamer.Consumer) {
+	s.mu.Lock()
 	for i, consumer := range s.consumers {
-		if consumer == nil {
-			log.Warn().Msgf("empty consumer: %+v\n", s)
-			continue
-		}
-
 		if consumer.element == cons {
 			// remove consumer pads from all producers
 			for _, track := range consumer.tracks {
@@ -118,55 +121,60 @@ func (s *Stream) RemoveConsumer(cons streamer.Consumer) {
 			break
 		}
 	}
+	s.mu.Unlock()
 
-	for _, producer := range s.producers {
+	s.stopProducers()
-		if producer == nil {
-			log.Warn().Msgf("empty producer: %+v\n", s)
-			continue
-		}
-
-		var sink bool
-		for _, track := range producer.tracks {
-			if len(track.Sink) > 0 {
-				sink = true
-			}
-		}
-		if !sink {
-			producer.stop()
-		}
-	}
 }
 
 func (s *Stream) AddProducer(prod streamer.Producer) {
-	producer := &Producer{element: prod, state: stateTracks}
+	producer := &Producer{element: prod, state: stateExternal}
+	s.mu.Lock()
 	s.producers = append(s.producers, producer)
+	s.mu.Unlock()
 }
 
 func (s *Stream) RemoveProducer(prod streamer.Producer) {
+	s.mu.Lock()
 	for i, producer := range s.producers {
 		if producer.element == prod {
 			s.removeProducer(i)
 			break
 		}
 	}
+	s.mu.Unlock()
 }
 
-func (s *Stream) Active() bool {
+func (s *Stream) stopProducers() {
-	if len(s.consumers) > 0 {
+	s.mu.Lock()
-		return true
+producers:
-	}
+	for _, producer := range s.producers {
-
+		for _, track := range producer.tracks {
-	for _, prod := range s.producers {
+			if track.HasSink() {
-		if prod.element != nil {
+				continue producers
-			return true
+			}
 		}
+		producer.stop()
 	}
-
+	s.mu.Unlock()
-	return false
 }
 
+//func (s *Stream) Active() bool {
+//	if len(s.consumers) > 0 {
+//		return true
+//	}
+//
+//	for _, prod := range s.producers {
+//		if prod.element != nil {
+//			return true
+//		}
+//	}
+//
+//	return false
+//}
+
 func (s *Stream) MarshalJSON() ([]byte, error) {
 	var v []interface{}
+	s.mu.Lock()
 	for _, prod := range s.producers {
 		if prod.element != nil {
 			v = append(v, prod.element)
@@ -176,6 +184,7 @@ func (s *Stream) MarshalJSON() ([]byte, error) {
 		// cons.element always not nil
 		v = append(v, cons.element)
 	}
+	s.mu.Unlock()
 	if len(v) == 0 {
 		v = nil
 	}

cmd/webrtc/webrtc.go

@@ -8,7 +8,9 @@ import (
 	"github.com/AlexxIT/go2rtc/pkg/webrtc"
 	pion "github.com/pion/webrtc/v3"
 	"github.com/rs/zerolog"
+	"io/ioutil"
 	"net"
+	"net/http"
 )
 
 func Init() {
@@ -55,6 +57,8 @@ func Init() {
 
 	api.HandleWS(webrtc.MsgTypeOffer, offerHandler)
 	api.HandleWS(webrtc.MsgTypeCandidate, candidateHandler)
+
+	api.HandleFunc("api/webrtc", syncHandler)
 }
 
 var Port string
@@ -137,6 +141,32 @@ func offerHandler(ctx *api.Context, msg *streamer.Message) {
 	ctx.Consumer = conn
 }
 
+func syncHandler(w http.ResponseWriter, r *http.Request) {
+	url := r.URL.Query().Get("src")
+	stream := streams.Get(url)
+	if stream == nil {
+		return
+	}
+
+	// get offer
+	offer, err := ioutil.ReadAll(r.Body)
+	if err != nil {
+		log.Error().Err(err).Caller().Send()
+		return
+	}
+
+	answer, err := ExchangeSDP(stream, string(offer), r.UserAgent())
+	if err != nil {
+		log.Error().Err(err).Caller().Send()
+		return
+	}
+
+	// send SDP to client
+	if _, err = w.Write([]byte(answer)); err != nil {
+		log.Error().Err(err).Caller().Send()
+	}
+}
+
 func ExchangeSDP(
 	stream *streams.Stream, offer string, userAgent string,
 ) (answer string, err error) {

examples/rtsp_client.go

@@ -1,58 +0,0 @@
-package main
-
-import (
-	"fmt"
-	"github.com/AlexxIT/go2rtc/pkg/rtsp"
-	"github.com/pion/rtp"
-	"os"
-	"time"
-)
-
-func main() {
-	client, err := rtsp.NewClient(os.Args[1])
-	if err != nil {
-		panic(err)
-	}
-
-	if err = client.Dial(); err != nil {
-		panic(err)
-	}
-	if err = client.Describe(); err != nil {
-		panic(err)
-	}
-
-	for _, media := range client.GetMedias() {
-		fmt.Printf("Media: %v\n", media)
-
-		if media.AV() {
-			track := client.GetTrack(media, media.Codecs[0])
-			fmt.Printf("Track: %v, %v\n", track, track.Codec)
-
-			track.Bind(func(packet *rtp.Packet) error {
-				nalUnitType := packet.Payload[0] & 0x1F
-				fmt.Printf(
-					"[RTP] codec: %s, nalu: %2d, size: %6d, ts: %10d, pt: %2d, ssrc: %d\n",
-					track.Codec.Name, nalUnitType, len(packet.Payload), packet.Timestamp,
-					packet.PayloadType, packet.SSRC,
-				)
-				return nil
-			})
-		}
-	}
-
-	if err = client.Play(); err != nil {
-		panic(err)
-	}
-
-	time.AfterFunc(time.Second*5, func() {
-		if err = client.Close(); err != nil {
-			panic(err)
-		}
-	})
-
-	if err = client.Handle(); err != nil {
-		panic(err)
-	}
-
-	fmt.Println("The End")
-}

go.mod

@@ -53,5 +53,7 @@ replace (
 	// windows support: https://github.com/brutella/dnssd/pull/35
 	github.com/brutella/dnssd v1.2.2 => github.com/rblenkinsopp/dnssd v1.2.3-0.20220516082132-0923f3c787a1
 	// RTP tlv8 fix
-	github.com/brutella/hap v0.0.17 => github.com/AlexxIT/hap v0.0.15-0.20220823033740-ce7d1564e657
+	github.com/brutella/hap v0.0.17 => github.com/AlexxIT/hap v0.0.15-0.20221108133010-d8a45b7a7045
+	// fix reading AAC config bytes
+	github.com/deepch/vdk v0.0.19 => github.com/AlexxIT/vdk v0.0.18-0.20221108193131-6168555b4f92
 )

go.sum

@@ -1,5 +1,7 @@
-github.com/AlexxIT/hap v0.0.15-0.20220823033740-ce7d1564e657 h1:FUzXAJfm6sRLJ8T6vfzvy/Hm3aioX8+fbxgx2VZoI78=
+github.com/AlexxIT/hap v0.0.15-0.20221108133010-d8a45b7a7045 h1:xJf3FxQJReJSDyYXJfI1NUWv8tUEAGNV9xigLqNtmrI=
-github.com/AlexxIT/hap v0.0.15-0.20220823033740-ce7d1564e657/go.mod h1:c2vEL5pzjRWEx07sa32kTVjzI9bBVlstrwBwKe3DlJ0=
+github.com/AlexxIT/hap v0.0.15-0.20221108133010-d8a45b7a7045/go.mod h1:QNA3sm16zE5uUyC8+E/gNkMvQWjqQLuxQKkU5PMi8N4=
+github.com/AlexxIT/vdk v0.0.18-0.20221108193131-6168555b4f92 h1:cIeYMGaAirSZnrKRDTb5VgZDDYqPLhYiczElMg4sQW0=
+github.com/AlexxIT/vdk v0.0.18-0.20221108193131-6168555b4f92/go.mod h1:7ydHfSkflMZxBXfWR79dMjrT54xzvLxnPaByOa9Jpzg=
 github.com/brutella/dnssd v1.2.3 h1:4fBLjZjPH7SbcHhEcIJhZcC9nOhIDZ0m3rn9bjl1/i0=
 github.com/brutella/dnssd v1.2.3/go.mod h1:JoW2sJUrmVIef25G6lrLj7HS6Xdwh6q8WUIvMkkBYXs=
 github.com/cheekybits/genny v1.0.0/go.mod h1:+tQajlRqAUrPI7DOSpB0XAqZYtQakVtB7wXkRAgjxjQ=
@@ -7,8 +9,6 @@ github.com/coreos/go-systemd/v22 v22.3.3-0.20220203105225-a9a7ef127534/go.mod h1
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-github.com/deepch/vdk v0.0.19 h1:r6xYyBTtXEIEh+csO0XHT00sI7xLF+hQFkJE9/go5II=
-github.com/deepch/vdk v0.0.19/go.mod h1:7ydHfSkflMZxBXfWR79dMjrT54xzvLxnPaByOa9Jpzg=
 github.com/fsnotify/fsnotify v1.4.7/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMoQvtojpjFo=
 github.com/fsnotify/fsnotify v1.4.9/go.mod h1:znqG4EE+3YCdAaPaxE2ZRY/06pZUdp0tY4IgpuI1SZQ=
 github.com/go-chi/chi v1.5.4 h1:QHdzF2szwjqVV4wmByUnTcsbIg7UGaQ0tPF2t5GcAIs=
@@ -245,6 +245,7 @@ gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7/go.mod h1:dt/ZhP58zS4L8KSrWD
 gopkg.in/yaml.v2 v2.2.1/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.4/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v2 v2.2.8/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.3.0/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.4.0/go.mod h1:RDklbk79AGWmwhnvt/jBztapEOGDOx6ZbXqjP6csGnQ=
 gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

pkg/README.md

@@ -2,4 +2,7 @@
 
 - https://www.wowza.com/blog/streaming-protocols
 - https://vimeo.com/blog/post/rtmp-stream/
-- https://sanjeev-pandey.medium.com/understanding-the-mpeg-4-moov-atom-pseudo-streaming-in-mp4-93935e1b9e9a
+- https://sanjeev-pandey.medium.com/understanding-the-mpeg-4-moov-atom-pseudo-streaming-in-mp4-93935e1b9e9a
+- [Android Supported media formats](https://developer.android.com/guide/topics/media/media-formats)
+- [THEOplayer](https://www.theoplayer.com/test-your-stream-hls-dash-hesp)
+- [How Generate DTS/PTS](https://www.ramugedia.com/how-generate-dts-pts-from-elementary-stream)

pkg/aac/README.md

@@ -0,0 +1,20 @@
+## AAC-LD and AAC-ELD
+
+Codec | Rate | QuickTime | ffmpeg | VLC
+------|------|-----------|--------|----
+AAC-LD  | 8000  | yes | no  | no
+AAC-LD  | 16000 | yes | no  | no
+AAC-LD  | 22050 | yes | yes | no
+AAC-LD  | 24000 | yes | yes | no
+AAC-LD  | 32000 | yes | yes | no
+AAC-ELD | 8000  | yes | no  | no
+AAC-ELD | 16000 | yes | no  | no
+AAC-ELD | 22050 | yes | yes | yes
+AAC-ELD | 24000 | yes | yes | yes
+AAC-ELD | 32000 | yes | yes | yes
+
+## Useful links
+
+- [4.6.20 Enhanced Low Delay Codec](https://csclub.uwaterloo.ca/~ehashman/ISO14496-3-2009.pdf)
+- https://stackoverflow.com/questions/40014508/aac-adts-for-aacobject-eld-packets
+- https://code.videolan.org/videolan/vlc/-/blob/master/modules/packetizer/mpeg4audio.c

pkg/aac/rtp.go

@@ -0,0 +1,57 @@
+package aac
+
+import (
+	"encoding/binary"
+	"github.com/AlexxIT/go2rtc/pkg/streamer"
+	"github.com/pion/rtp"
+)
+
+const RTPPacketVersionAAC = 0
+
+func RTPDepay(track *streamer.Track) streamer.WrapperFunc {
+	return func(push streamer.WriterFunc) streamer.WriterFunc {
+		return func(packet *rtp.Packet) error {
+			// support ONLY 2 bytes header size!
+			// streamtype=5;profile-level-id=1;mode=AAC-hbr;sizelength=13;indexlength=3;indexdeltalength=3;config=1408
+			headersSize := binary.BigEndian.Uint16(packet.Payload) >> 3
+
+			//log.Printf("[RTP/AAC] units: %d, size: %4d, ts: %10d, %t", headersSize/2, len(packet.Payload), packet.Timestamp, packet.Marker)
+
+			clone := *packet
+			clone.Version = RTPPacketVersionAAC
+			clone.Payload = packet.Payload[2+headersSize:]
+			return push(&clone)
+		}
+	}
+}
+
+func RTPPay(mtu uint16) streamer.WrapperFunc {
+	sequencer := rtp.NewRandomSequencer()
+
+	return func(push streamer.WriterFunc) streamer.WriterFunc {
+		return func(packet *rtp.Packet) error {
+			if packet.Version != RTPPacketVersionAAC {
+				return push(packet)
+			}
+
+			// support ONLY one unit in payload
+			size := uint16(len(packet.Payload))
+			// 2 bytes header size + 2 bytes first payload size
+			payload := make([]byte, 2+2+size)
+			payload[1] = 16 // header size in bits
+			binary.BigEndian.PutUint16(payload[2:], size<<3)
+			copy(payload[4:], packet.Payload)
+
+			clone := rtp.Packet{
+				Header: rtp.Header{
+					Version:        2,
+					Marker:         true,
+					SequenceNumber: sequencer.NextSequenceNumber(),
+					Timestamp:      packet.Timestamp,
+				},
+				Payload: payload,
+			}
+			return push(&clone)
+		}
+	}
+}

pkg/h264/avc.go

@@ -6,12 +6,6 @@ import (
 	"github.com/pion/rtp"
 )
 
-const PayloadTypeAVC = 255
-
-func IsAVC(codec *streamer.Codec) bool {
-	return codec.PayloadType == PayloadTypeAVC
-}
-
 func EncodeAVC(nals ...[]byte) (avc []byte) {
 	var i, n int
 

pkg/h264/helper.go

@@ -8,11 +8,12 @@ import (
 )
 
 const (
-	NALUTypePFrame = 1
+	NALUTypePFrame = 1 // Coded slice of a non-IDR picture
-	NALUTypeIFrame = 5
+	NALUTypeIFrame = 5 // Coded slice of an IDR picture
-	NALUTypeSEI    = 6
+	NALUTypeSEI    = 6 // Supplemental enhancement information (SEI)
-	NALUTypeSPS    = 7
+	NALUTypeSPS    = 7 // Sequence parameter set
-	NALUTypePPS    = 8
+	NALUTypePPS    = 8 // Picture parameter set
+	NALUTypeAUD    = 9 // Access unit delimiter
 )
 
 func NALUType(b []byte) byte {

pkg/h264/rtp.go

@@ -19,11 +19,7 @@ func RTPDepay(track *streamer.Track) streamer.WrapperFunc {
 
 	return func(push streamer.WriterFunc) streamer.WriterFunc {
 		return func(packet *rtp.Packet) error {
-			//fmt.Printf(
+			//log.Printf("[RTP] codec: %s, nalu: %2d, size: %6d, ts: %10d, pt: %2d, ssrc: %d, seq: %d, %v", track.Codec.Name, packet.Payload[0]&0x1F, len(packet.Payload), packet.Timestamp, packet.PayloadType, packet.SSRC, packet.SequenceNumber, packet.Marker)
-			//	"[RTP] codec: %s, nalu: %2d, size: %6d, ts: %10d, pt: %2d, ssrc: %d, seq: %d, %v\n",
-			//	track.Codec.Name, packet.Payload[0]&0x1F, len(packet.Payload), packet.Timestamp,
-			//	packet.PayloadType, packet.SSRC, packet.SequenceNumber, packet.Marker,
-			//)
 
 			payload, err := depack.Unmarshal(packet.Payload)
 			if len(payload) == 0 || err != nil {
@@ -40,11 +36,13 @@ func RTPDepay(track *streamer.Track) streamer.WrapperFunc {
 			}
 
 			if len(buf) == 0 {
+				// Amcrest IP4M-1051: 9, 7, 8, 6, 28...
+				// Amcrest IP4M-1051: 9, 6, 1
 				switch NALUType(payload) {
 				case NALUTypeIFrame:
 					// fix IFrame without SPS,PPS
 					buf = append(buf, ps...)
-				case NALUTypeSEI:
+				case NALUTypeSEI, NALUTypeAUD:
 					// fix ffmpeg with transcoding first frame
 					i := int(4 + binary.BigEndian.Uint32(payload))
 
@@ -72,10 +70,7 @@ func RTPDepay(track *streamer.Track) streamer.WrapperFunc {
 				buf = buf[:0]
 			}
 
-			//fmt.Printf(
+			//log.Printf("[AVC] %v, len: %d", Types(payload), len(payload))
-			//	"[AVC] %v, len: %d, %v\n", Types(payload), len(payload),
-			//	reflect.ValueOf(buf).Pointer() == reflect.ValueOf(payload).Pointer(),
-			//)
 
 			clone := *packet
 			clone.Version = RTPPacketVersionAVC
@@ -92,29 +87,28 @@ func RTPPay(mtu uint16) streamer.WrapperFunc {
 
 	return func(push streamer.WriterFunc) streamer.WriterFunc {
 		return func(packet *rtp.Packet) error {
-			if packet.Version == RTPPacketVersionAVC {
+			if packet.Version != RTPPacketVersionAVC {
-				payloads := payloader.Payload(mtu, packet.Payload)
+				return push(packet)
-				last := len(payloads) - 1
-				for i, payload := range payloads {
-					clone := rtp.Packet{
-						Header: rtp.Header{
-							Version: 2,
-							Marker:  i == last,
-							//PayloadType:    packet.PayloadType,
-							SequenceNumber: sequencer.NextSequenceNumber(),
-							Timestamp:      packet.Timestamp,
-							//SSRC:           packet.SSRC,
-						},
-						Payload: payload,
-					}
-					if err := push(&clone); err != nil {
-						return err
-					}
-				}
-				return nil
 			}
 
-			return push(packet)
+			payloads := payloader.Payload(mtu, packet.Payload)
+			last := len(payloads) - 1
+			for i, payload := range payloads {
+				clone := rtp.Packet{
+					Header: rtp.Header{
+						Version:        2,
+						Marker:         i == last,
+						SequenceNumber: sequencer.NextSequenceNumber(),
+						Timestamp:      packet.Timestamp,
+					},
+					Payload: payload,
+				}
+				if err := push(&clone); err != nil {
+					return err
+				}
+			}
+
+			return nil
 		}
 	}
 }

pkg/hap/README.md

@@ -1,4 +1,4 @@
-# Homekit
+# Home Accessory Protocol
 
 > PS. Character = Characteristic
 

pkg/hap/accessory.go

@@ -1,4 +1,4 @@
-package homekit
+package hap
 
 type Accessory struct {
 	AID      int        `json:"aid"`

pkg/hap/camera/client.go

@@ -2,22 +2,22 @@ package camera
 
 import (
 	"errors"
-	"github.com/AlexxIT/go2rtc/pkg/homekit"
+	"github.com/AlexxIT/go2rtc/pkg/hap"
 	"github.com/brutella/hap/characteristic"
 	"github.com/brutella/hap/rtp"
 )
 
 type Client struct {
-	client *homekit.Client
+	client *hap.Conn
 }
 
-func NewClient(client *homekit.Client) *Client {
+func NewClient(client *hap.Conn) *Client {
 	return &Client{client: client}
 }
 
-func (c *Client) StartStream2(ses *Session) (err error) {
+func (c *Client) StartStream(ses *Session) (err error) {
 	// Step 1. Check if camera ready (free) to stream
-	var srv *homekit.Service
+	var srv *hap.Service
 	if srv, err = c.GetFreeStream(); err != nil {
 		return err
 	}
@@ -35,8 +35,8 @@ func (c *Client) StartStream2(ses *Session) (err error) {
 // GetFreeStream search free streaming service.
 // Usual every HomeKit camera can stream only to two clients simultaniosly.
 // So it has two similar services for streaming.
-func (c *Client) GetFreeStream() (srv *homekit.Service, err error) {
+func (c *Client) GetFreeStream() (srv *hap.Service, err error) {
-	var accs []*homekit.Accessory
+	var accs []*hap.Accessory
 	if accs, err = c.client.GetAccessories(); err != nil {
 		return
 	}
@@ -60,7 +60,7 @@ func (c *Client) GetFreeStream() (srv *homekit.Service, err error) {
 }
 
 func (c *Client) SetupEndpoins(
-	srv *homekit.Service, req *rtp.SetupEndpoints,
+	srv *hap.Service, req *rtp.SetupEndpoints,
 ) (res *rtp.SetupEndpointsResponse, err error) {
 	// get setup endpoint character ID
 	char := srv.GetCharacter(characteristic.TypeSetupEndpoints)
@@ -87,7 +87,7 @@ func (c *Client) SetupEndpoins(
 	return
 }
 
-func (c *Client) SetConfig(srv *homekit.Service, config *rtp.StreamConfiguration) (err error) {
+func (c *Client) SetConfig(srv *hap.Service, config *rtp.StreamConfiguration) (err error) {
 	// get setup endpoint character ID
 	char := srv.GetCharacter(characteristic.TypeSelectedStreamConfiguration)
 	char.Event = nil

pkg/hap/camera/session.go

@@ -0,0 +1,75 @@
+package camera
+
+import (
+	cryptorand "crypto/rand"
+	"encoding/binary"
+	"github.com/brutella/hap/rtp"
+)
+
+type Session struct {
+	Offer  *rtp.SetupEndpoints
+	Answer *rtp.SetupEndpointsResponse
+	Config *rtp.StreamConfiguration
+}
+
+func NewSession(vp *rtp.VideoParameters, ap *rtp.AudioParameters) *Session {
+	vp.RTP = rtp.RTPParams{
+		PayloadType: 99,
+		Ssrc:        RandomUint32(),
+		Bitrate:     2048,
+		Interval:    10,
+		MTU:         1200, // like WebRTC
+	}
+	ap.RTP = rtp.RTPParams{
+		PayloadType:             110,
+		Ssrc:                    RandomUint32(),
+		Bitrate:                 32,
+		Interval:                10,
+		ComfortNoisePayloadType: 98,
+		MTU:                     0,
+	}
+
+	sessionID := RandomBytes(16)
+	s := &Session{
+		Offer: &rtp.SetupEndpoints{
+			SessionId: sessionID,
+			Video: rtp.CryptoSuite{
+				MasterKey:  RandomBytes(16),
+				MasterSalt: RandomBytes(14),
+			},
+			Audio: rtp.CryptoSuite{
+				MasterKey:  RandomBytes(16),
+				MasterSalt: RandomBytes(14),
+			},
+		},
+		Config: &rtp.StreamConfiguration{
+			Command: rtp.SessionControlCommand{
+				Identifier: sessionID,
+				Type:       rtp.SessionControlCommandTypeStart,
+			},
+			Video: *vp,
+			Audio: *ap,
+		},
+	}
+	return s
+}
+
+func (s *Session) SetLocalEndpoint(host string, port uint16) {
+	s.Offer.ControllerAddr = rtp.Addr{
+		IPAddr:       host,
+		VideoRtpPort: port,
+		AudioRtpPort: port,
+	}
+}
+
+func RandomBytes(size int) []byte {
+	data := make([]byte, size)
+	_, _ = cryptorand.Read(data)
+	return data
+}
+
+func RandomUint32() uint32 {
+	data := make([]byte, 4)
+	_, _ = cryptorand.Read(data)
+	return binary.BigEndian.Uint32(data)
+}

pkg/hap/character.go

@@ -1,4 +1,4 @@
-package homekit
+package hap
 
 import (
 	"bytes"

pkg/hap/conn.go

@@ -0,0 +1,733 @@
+package hap
+
+import (
+	"bufio"
+	"crypto/sha512"
+	"encoding/hex"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"github.com/AlexxIT/go2rtc/pkg/hap/mdns"
+	"github.com/AlexxIT/go2rtc/pkg/streamer"
+	"github.com/brutella/hap"
+	"github.com/brutella/hap/chacha20poly1305"
+	"github.com/brutella/hap/curve25519"
+	"github.com/brutella/hap/ed25519"
+	"github.com/brutella/hap/hkdf"
+	"github.com/brutella/hap/tlv8"
+	"github.com/tadglines/go-pkgs/crypto/srp"
+	"io"
+	"net"
+	"net/http"
+	"net/url"
+	"strings"
+	"time"
+)
+
+// Conn for HomeKit. DevicePublic can be null.
+type Conn struct {
+	streamer.Element
+
+	DeviceAddress string // including port
+	DeviceID      string
+	DevicePublic  []byte
+	ClientID      string
+	ClientPrivate []byte
+
+	OnEvent func(res *http.Response)
+	Output  func(msg interface{})
+
+	conn         net.Conn
+	secure       *Secure
+	httpResponse chan *bufio.Reader
+}
+
+func NewConn(rawURL string) (*Conn, error) {
+	u, err := url.Parse(rawURL)
+	if err != nil {
+		return nil, err
+	}
+
+	query := u.Query()
+	c := &Conn{
+		DeviceAddress: u.Host,
+		DeviceID:      query.Get("device_id"),
+		DevicePublic:  DecodeKey(query.Get("device_public")),
+		ClientID:      query.Get("client_id"),
+		ClientPrivate: DecodeKey(query.Get("client_private")),
+	}
+
+	return c, nil
+}
+
+func Pair(deviceID, pin string) (*Conn, error) {
+	entry := mdns.GetEntry(deviceID)
+	if entry == nil {
+		return nil, errors.New("can't find device via mDNS")
+	}
+
+	c := &Conn{
+		DeviceAddress: fmt.Sprintf("%s:%d", entry.AddrV4.String(), entry.Port),
+		DeviceID:      deviceID,
+		ClientID:      GenerateUUID(),
+		ClientPrivate: GenerateKey(),
+	}
+
+	var mfi bool
+	for _, field := range entry.InfoFields {
+		if field[:2] == "ff" {
+			if field[3] == '1' {
+				mfi = true
+			}
+			break
+		}
+	}
+
+	return c, c.Pair(mfi, pin)
+}
+
+func (c *Conn) ClientPublic() []byte {
+	return c.ClientPrivate[32:]
+}
+
+func (c *Conn) URL() string {
+	return fmt.Sprintf(
+		"homekit://%s?device_id=%s&device_public=%16x&client_id=%s&client_private=%32x",
+		c.DeviceAddress, c.DeviceID, c.DevicePublic, c.ClientID, c.ClientPrivate,
+	)
+}
+
+func (c *Conn) DialAndServe() error {
+	if err := c.Dial(); err != nil {
+		return err
+	}
+	return c.Handle()
+}
+
+func (c *Conn) Dial() error {
+	// update device host before dial
+	if host := mdns.GetAddress(c.DeviceID); host != "" {
+		c.DeviceAddress = host
+	}
+
+	var err error
+	c.conn, err = net.DialTimeout("tcp", c.DeviceAddress, time.Second*5)
+	if err != nil {
+		return err
+	}
+
+	// STEP M1: send our session public to device
+	sessionPublic, sessionPrivate := curve25519.GenerateKeyPair()
+
+	// 1. generate payload
+	// important not include other fields
+	requestM1 := struct {
+		State     byte   `tlv8:"6"`
+		PublicKey []byte `tlv8:"3"`
+	}{
+		State:     hap.M1,
+		PublicKey: sessionPublic[:],
+	}
+	// 2. pack payload to TLV8
+	buf, err := tlv8.Marshal(requestM1)
+	if err != nil {
+		return err
+	}
+
+	// 3. send request
+	resp, err := c.Post(UriPairVerify, buf)
+	if err != nil {
+		return err
+	}
+
+	// STEP M2: unpack deviceID from response
+	responseM2 := PairVerifyPayload{}
+	if err = tlv8.UnmarshalReader(resp.Body, &responseM2); err != nil {
+		return err
+	}
+
+	// 1. generate session shared key
+	var deviceSessionPublic [32]byte
+	copy(deviceSessionPublic[:], responseM2.PublicKey)
+	sessionShared := curve25519.SharedSecret(sessionPrivate, deviceSessionPublic)
+	sessionKey, err := hkdf.Sha512(
+		sessionShared[:], []byte("Pair-Verify-Encrypt-Salt"),
+		[]byte("Pair-Verify-Encrypt-Info"),
+	)
+
+	// 2. decrypt M2 response with session key
+	msg := responseM2.EncryptedData[:len(responseM2.EncryptedData)-16]
+	var mac [16]byte
+	copy(mac[:], responseM2.EncryptedData[len(msg):]) // 16 byte (MAC)
+
+	buf, err = chacha20poly1305.DecryptAndVerify(
+		sessionKey[:], []byte("PV-Msg02"), msg, mac, nil,
+	)
+
+	// 3. unpack payload from TLV8
+	payloadM2 := PairVerifyPayload{}
+	if err = tlv8.Unmarshal(buf, &payloadM2); err != nil {
+		return err
+	}
+
+	// 4. verify signature for M2 response with device public
+	// device session + device id + our session
+	if c.DevicePublic != nil {
+		buf = nil
+		buf = append(buf, responseM2.PublicKey[:]...)
+		buf = append(buf, []byte(payloadM2.Identifier)...)
+		buf = append(buf, sessionPublic[:]...)
+		if !ed25519.ValidateSignature(
+			c.DevicePublic[:], buf, payloadM2.Signature,
+		) {
+			return errors.New("device public signature invalid")
+		}
+	}
+
+	// STEP M3: send our clientID to device
+	// 1. generate signature with our private key
+	// (our session + our ID + device session)
+	buf = nil
+	buf = append(buf, sessionPublic[:]...)
+	buf = append(buf, []byte(c.ClientID)...)
+	buf = append(buf, responseM2.PublicKey[:]...)
+	signature, err := ed25519.Signature(c.ClientPrivate[:], buf)
+	if err != nil {
+		return err
+	}
+
+	// 2. generate payload
+	payloadM3 := struct {
+		Identifier string `tlv8:"1"`
+		Signature  []byte `tlv8:"10"`
+	}{
+		Identifier: c.ClientID,
+		Signature:  signature,
+	}
+	// 3. pack payload to TLV8
+	buf, err = tlv8.Marshal(payloadM3)
+	if err != nil {
+		return err
+	}
+
+	// 4. encrypt payload with session key
+	msg, mac, _ = chacha20poly1305.EncryptAndSeal(
+		sessionKey[:], []byte("PV-Msg03"), buf, nil,
+	)
+
+	// 4. generate request
+	requestM3 := struct {
+		EncryptedData []byte `tlv8:"5"`
+		State         byte   `tlv8:"6"`
+	}{
+		State:         hap.M3,
+		EncryptedData: append(msg, mac[:]...),
+	}
+	// 5. pack payload to TLV8
+	buf, err = tlv8.Marshal(requestM3)
+	if err != nil {
+		return err
+	}
+
+	resp, err = c.Post(UriPairVerify, buf)
+	if err != nil {
+		return err
+	}
+
+	// STEP M4. Read response
+	responseM4 := PairVerifyPayload{}
+	if err = tlv8.UnmarshalReader(resp.Body, &responseM4); err != nil {
+		return err
+	}
+
+	// 1. check response state
+	if responseM4.State != 4 || responseM4.Status != 0 {
+		return fmt.Errorf("wrong M4 response: %+v", responseM4)
+	}
+
+	c.secure, err = NewSecure(sessionShared, false)
+	//c.secure.Buffer = bytes.NewBuffer(nil)
+	c.secure.Conn = c.conn
+
+	c.httpResponse = make(chan *bufio.Reader, 10)
+
+	return err
+}
+
+// https://github.com/apple/HomeKitADK/blob/master/HAP/HAPPairingPairSetup.c
+func (c *Conn) Pair(mfi bool, pin string) (err error) {
+	pin = strings.ReplaceAll(pin, "-", "")
+	if len(pin) != 8 {
+		return fmt.Errorf("wrong PIN format: %s", pin)
+	}
+	pin = pin[:3] + "-" + pin[3:5] + "-" + pin[5:]
+
+	c.conn, err = net.Dial("tcp", c.DeviceAddress)
+	if err != nil {
+		return
+	}
+
+	// STEP M1. Generate request
+	reqM1 := struct {
+		Method byte `tlv8:"0"`
+		State  byte `tlv8:"6"`
+	}{
+		State: hap.M1,
+	}
+	if mfi {
+		reqM1.Method = 1 // ff=1 => method=1, ff=2 => method=0
+	}
+	buf, err := tlv8.Marshal(reqM1)
+	if err != nil {
+		return
+	}
+
+	// STEP M1. Send request
+	res, err := c.Post(UriPairSetup, buf)
+	if err != nil {
+		return
+	}
+
+	// STEP M2. Read response
+	resM2 := struct {
+		Salt      []byte `tlv8:"2"`
+		PublicKey []byte `tlv8:"3"` // server public key, aka session.B
+		State     byte   `tlv8:"6"`
+		Error     byte   `tlv8:"7"`
+	}{}
+	if err = tlv8.UnmarshalReader(res.Body, &resM2); err != nil {
+		return
+	}
+	if resM2.State != 2 || resM2.Error > 0 {
+		return fmt.Errorf("wrong M2: %+v", resM2)
+	}
+
+	// STEP M3. Generate session using pin
+	username := []byte("Pair-Setup")
+
+	SRP, err := srp.NewSRP(
+		"rfc5054.3072", sha512.New, keyDerivativeFuncRFC2945(username),
+	)
+	if err != nil {
+		return
+	}
+
+	SRP.SaltLength = 16
+
+	// username: "Pair-Setup"
+	// password: PIN (with dashes)
+	session := SRP.NewClientSession(username, []byte(pin))
+	sessionShared, err := session.ComputeKey(resM2.Salt, resM2.PublicKey)
+	if err != nil {
+		return
+	}
+
+	// STEP M3. Generate request
+	reqM3 := struct {
+		PublicKey []byte `tlv8:"3"`
+		Proof     []byte `tlv8:"4"`
+		State     byte   `tlv8:"6"`
+	}{
+		PublicKey: session.GetA(), // client public key, aka session.A
+		Proof:     session.ComputeAuthenticator(),
+		State:     hap.M3,
+	}
+	buf, err = tlv8.Marshal(reqM3)
+	if err != nil {
+		return err
+	}
+
+	// STEP M3. Send request
+	res, err = c.Post(UriPairSetup, buf)
+	if err != nil {
+		return
+	}
+
+	// STEP M4. Read response
+	resM4 := struct {
+		Proof []byte `tlv8:"4"` // server proof
+		State byte   `tlv8:"6"`
+		Error byte   `tlv8:"7"`
+	}{}
+	if err = tlv8.UnmarshalReader(res.Body, &resM4); err != nil {
+		return
+	}
+	if resM4.Error == 2 {
+		return fmt.Errorf("wrong PIN: %s", pin)
+	}
+	if resM4.State != 4 || resM4.Error > 0 {
+		return fmt.Errorf("wrong M4: %+v", resM4)
+	}
+
+	// STEP M4. Verify response
+	if !session.VerifyServerAuthenticator(resM4.Proof) {
+		return errors.New("verify server auth fail")
+	}
+
+	// STEP M5. Generate signature
+	saltKey, err := hkdf.Sha512(
+		sessionShared, []byte("Pair-Setup-Controller-Sign-Salt"),
+		[]byte("Pair-Setup-Controller-Sign-Info"),
+	)
+	if err != nil {
+		return
+	}
+
+	buf = nil
+	buf = append(buf, saltKey[:]...)
+	buf = append(buf, []byte(c.ClientID)...)
+	buf = append(buf, c.ClientPublic()...)
+
+	signature, err := ed25519.Signature(c.ClientPrivate, buf)
+	if err != nil {
+		return
+	}
+
+	// STEP M5. Generate payload
+	msgM5 := struct {
+		Identifier string `tlv8:"1"`
+		PublicKey  []byte `tlv8:"3"`
+		Signature  []byte `tlv8:"10"`
+	}{
+		Identifier: c.ClientID,
+		PublicKey:  c.ClientPublic(),
+		Signature:  signature,
+	}
+	buf, err = tlv8.Marshal(msgM5)
+	if err != nil {
+		return
+	}
+
+	// STEP M5. Encrypt payload
+	sessionKey, err := hkdf.Sha512(
+		sessionShared, []byte("Pair-Setup-Encrypt-Salt"),
+		[]byte("Pair-Setup-Encrypt-Info"),
+	)
+	if err != nil {
+		return
+	}
+	buf, mac, _ := chacha20poly1305.EncryptAndSeal(
+		sessionKey[:], []byte("PS-Msg05"), buf, nil,
+	)
+
+	// STEP M5. Generate request
+	reqM5 := struct {
+		EncryptedData []byte `tlv8:"5"`
+		State         byte   `tlv8:"6"`
+	}{
+		EncryptedData: append(buf, mac[:]...),
+		State:         hap.M5,
+	}
+	buf, err = tlv8.Marshal(reqM5)
+	if err != nil {
+		return err
+	}
+
+	// STEP M5. Send request
+	res, err = c.Post(UriPairSetup, buf)
+	if err != nil {
+		return
+	}
+
+	// STEP M6. Read response
+	resM6 := struct {
+		EncryptedData []byte `tlv8:"5"`
+		State         byte   `tlv8:"6"`
+		Error         byte   `tlv8:"7"`
+	}{}
+	if err = tlv8.UnmarshalReader(res.Body, &resM6); err != nil {
+		return
+	}
+	if resM6.State != 6 || resM6.Error > 0 {
+		return fmt.Errorf("wrong M6: %+v", resM2)
+	}
+
+	// STEP M6. Decrypt payload
+	msg := resM6.EncryptedData[:len(resM6.EncryptedData)-16]
+	copy(mac[:], resM6.EncryptedData[len(msg):]) // 16 byte (MAC)
+
+	buf, err = chacha20poly1305.DecryptAndVerify(
+		sessionKey[:], []byte("PS-Msg06"), msg, mac, nil,
+	)
+	if err != nil {
+		return
+	}
+
+	msgM6 := struct {
+		Identifier []byte `tlv8:"1"`
+		PublicKey  []byte `tlv8:"3"`
+		Signature  []byte `tlv8:"10"`
+	}{}
+	if err = tlv8.Unmarshal(buf, &msgM6); err != nil {
+		return
+	}
+
+	// STEP M6. Verify payload
+	if saltKey, err = hkdf.Sha512(
+		sessionShared, []byte("Pair-Setup-Accessory-Sign-Salt"),
+		[]byte("Pair-Setup-Accessory-Sign-Info"),
+	); err != nil {
+		return
+	}
+
+	buf = nil
+	buf = append(buf, saltKey[:]...)
+	buf = append(buf, msgM6.Identifier...)
+	buf = append(buf, msgM6.PublicKey...)
+
+	if !ed25519.ValidateSignature(
+		msgM6.PublicKey[:], buf, msgM6.Signature,
+	) {
+		return errors.New("wrong server signature")
+	}
+
+	if c.DeviceID != string(msgM6.Identifier) {
+		return fmt.Errorf("wrong Device ID: %s", msgM6.Identifier)
+	}
+
+	c.DevicePublic = msgM6.PublicKey
+
+	return nil
+}
+
+func (c *Conn) Close() error {
+	if c.conn == nil {
+		return nil
+	}
+	conn := c.conn
+	c.conn = nil
+	return conn.Close()
+}
+
+func (c *Conn) GetAccessories() ([]*Accessory, error) {
+	res, err := c.Get("/accessories")
+	if err != nil {
+		return nil, err
+	}
+
+	data, err := io.ReadAll(res.Body)
+	if err != nil {
+		return nil, err
+	}
+
+	p := Accessories{}
+	if err = json.Unmarshal(data, &p); err != nil {
+		return nil, err
+	}
+
+	for _, accs := range p.Accessories {
+		for _, serv := range accs.Services {
+			for _, char := range serv.Characters {
+				char.AID = accs.AID
+			}
+		}
+	}
+
+	return p.Accessories, nil
+}
+
+func (c *Conn) GetCharacters(query string) ([]*Character, error) {
+	res, err := c.Get("/characteristics?id=" + query)
+	if err != nil {
+		return nil, err
+	}
+
+	data, err := io.ReadAll(res.Body)
+	if err != nil {
+		return nil, err
+	}
+
+	ch := Characters{}
+	if err = json.Unmarshal(data, &ch); err != nil {
+		return nil, err
+	}
+	return ch.Characters, nil
+}
+
+func (c *Conn) GetCharacter(char *Character) error {
+	query := fmt.Sprintf("%d.%d", char.AID, char.IID)
+	chars, err := c.GetCharacters(query)
+	if err != nil {
+		return err
+	}
+	char.Value = chars[0].Value
+	return nil
+}
+
+func (c *Conn) PutCharacters(characters ...*Character) (err error) {
+	for i, char := range characters {
+		if char.Event != nil {
+			char = &Character{AID: char.AID, IID: char.IID, Event: char.Event}
+		} else {
+			char = &Character{AID: char.AID, IID: char.IID, Value: char.Value}
+		}
+		characters[i] = char
+	}
+	var data []byte
+	if data, err = json.Marshal(Characters{characters}); err != nil {
+		return
+	}
+
+	var res *http.Response
+	if res, err = c.Put("/characteristics", data); err != nil {
+		return
+	}
+
+	if res.StatusCode >= 400 {
+		return errors.New("wrong response status")
+	}
+
+	return
+}
+
+func (c *Conn) GetImage(width, height int) ([]byte, error) {
+	res, err := c.Post(
+		"/resource", []byte(fmt.Sprintf(
+			`{"image-width":%d,"image-height":%d,"resource-type":"image","reason":0}`,
+			width, height,
+		)),
+	)
+	if err != nil {
+		return nil, err
+	}
+	return io.ReadAll(res.Body)
+}
+
+//func (c *Client) onEventData(r io.Reader) error {
+//	if c.OnEvent == nil {
+//		return nil
+//	}
+//
+//	data, err := io.ReadAll(r)
+//
+//	ch := Characters{}
+//	if err = json.Unmarshal(data, &ch); err != nil {
+//		return err
+//	}
+//
+//	c.OnEvent(ch.Characters)
+//
+//	return nil
+//}
+
+func (c *Conn) ListPairings() error {
+	pReq := struct {
+		Method byte `tlv8:"0"`
+		State  byte `tlv8:"6"`
+	}{
+		Method: hap.MethodListPairings,
+		State:  hap.M1,
+	}
+	data, err := tlv8.Marshal(pReq)
+	if err != nil {
+		return err
+	}
+
+	res, err := c.Post("/pairings", data)
+	if err != nil {
+		return err
+	}
+
+	data, err = io.ReadAll(res.Body)
+	// TODO: don't know how to fix array of items
+	var pRes struct {
+		State      byte   `tlv8:"6"`
+		Identifier string `tlv8:"1"`
+		PublicKey  []byte `tlv8:"3"`
+		Permission byte   `tlv8:"11"`
+	}
+	if err = tlv8.Unmarshal(data, &pRes); err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func (c *Conn) PairingsAdd(clientID string, clientPublic []byte, admin bool) error {
+	pReq := struct {
+		Method     byte   `tlv8:"0"`
+		Identifier string `tlv8:"1"`
+		PublicKey  []byte `tlv8:"3"`
+		State      byte   `tlv8:"6"`
+		Permission byte   `tlv8:"11"`
+	}{
+		Method:     hap.MethodAddPairing,
+		Identifier: clientID,
+		PublicKey:  clientPublic,
+		State:      hap.M1,
+		Permission: hap.PermissionUser,
+	}
+	if admin {
+		pReq.Permission = hap.PermissionAdmin
+	}
+
+	data, err := tlv8.Marshal(pReq)
+	if err != nil {
+		return err
+	}
+
+	res, err := c.Post("/pairings", data)
+	if err != nil {
+		return err
+	}
+
+	data, err = io.ReadAll(res.Body)
+	var pRes struct {
+		State   byte `tlv8:"6"`
+		Unknown byte `tlv8:"7"`
+	}
+	if err = tlv8.Unmarshal(data, &pRes); err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func (c *Conn) DeletePairing(id string) error {
+	reqM1 := struct {
+		State      byte   `tlv8:"6"`
+		Method     byte   `tlv8:"0"`
+		Identifier string `tlv8:"1"`
+	}{
+		State:      hap.M1,
+		Method:     hap.MethodDeletePairing,
+		Identifier: id,
+	}
+	data, err := tlv8.Marshal(reqM1)
+	if err != nil {
+		return err
+	}
+
+	res, err := c.Post("/pairings", data)
+	if err != nil {
+		return err
+	}
+
+	data, err = io.ReadAll(res.Body)
+	var resM2 struct {
+		State byte `tlv8:"6"`
+	}
+	if err = tlv8.Unmarshal(data, &resM2); err != nil {
+		return err
+	}
+	if resM2.State != hap.M2 {
+		return errors.New("wrong state")
+	}
+
+	return nil
+}
+
+func (c *Conn) LocalAddr() string {
+	return c.conn.LocalAddr().String()
+}
+
+func DecodeKey(s string) []byte {
+	if s == "" {
+		return nil
+	}
+	data, err := hex.DecodeString(s)
+	if err != nil {
+		return nil
+	}
+	return data
+}

pkg/hap/helpers.go

@@ -1,4 +1,4 @@
-package homekit
+package hap
 
 import (
 	"crypto/rand"
@@ -29,13 +29,13 @@ func GenerateUUID() string {
 }
 
 type PairVerifyPayload struct {
-	Method        byte   `tlv8:"0"`
+	Method        byte   `tlv8:"0,optional"`
-	Identifier    string `tlv8:"1"`
+	Identifier    string `tlv8:"1,optional"`
-	PublicKey     []byte `tlv8:"3"`
+	PublicKey     []byte `tlv8:"3,optional"`
-	EncryptedData []byte `tlv8:"5"`
+	EncryptedData []byte `tlv8:"5,optional"`
-	State         byte   `tlv8:"6"`
+	State         byte   `tlv8:"6,optional"`
-	Status        byte   `tlv8:"7"`
+	Status        byte   `tlv8:"7,optional"`
-	Signature     []byte `tlv8:"10"`
+	Signature     []byte `tlv8:"10,optional"`
 }
 
 //func (c *Character) Unmarshal(value interface{}) error {

pkg/hap/http.go

@@ -1,4 +1,4 @@
-package homekit
+package hap
 
 import (
 	"bufio"
@@ -23,7 +23,7 @@ const (
 	UriResource        = "/resource"
 )
 
-func (c *Client) Write(p []byte) (r io.Reader, err error) {
+func (c *Conn) Write(p []byte) (r io.Reader, err error) {
 	if c.secure == nil {
 		if _, err = c.conn.Write(p); err == nil {
 			r = bufio.NewReader(c.conn)
@@ -36,7 +36,7 @@ func (c *Client) Write(p []byte) (r io.Reader, err error) {
 	return
 }
 
-func (c *Client) Do(req *http.Request) (*http.Response, error) {
+func (c *Conn) Do(req *http.Request) (*http.Response, error) {
 	if c.secure == nil {
 		// insecure requests
 		if err := req.Write(c.conn); err != nil {
@@ -56,7 +56,7 @@ func (c *Client) Do(req *http.Request) (*http.Response, error) {
 	return http.ReadResponse(buf, req)
 }
 
-func (c *Client) Get(uri string) (*http.Response, error) {
+func (c *Conn) Get(uri string) (*http.Response, error) {
 	req, err := http.NewRequest(
 		"GET", "http://"+c.DeviceAddress+uri, nil,
 	)
@@ -66,7 +66,7 @@ func (c *Client) Get(uri string) (*http.Response, error) {
 	return c.Do(req)
 }
 
-func (c *Client) Post(uri string, data []byte) (*http.Response, error) {
+func (c *Conn) Post(uri string, data []byte) (*http.Response, error) {
 	req, err := http.NewRequest(
 		"POST", "http://"+c.DeviceAddress+uri,
 		bytes.NewReader(data),
@@ -85,7 +85,7 @@ func (c *Client) Post(uri string, data []byte) (*http.Response, error) {
 	return c.Do(req)
 }
 
-func (c *Client) Put(uri string, data []byte) (*http.Response, error) {
+func (c *Conn) Put(uri string, data []byte) (*http.Response, error) {
 	req, err := http.NewRequest(
 		"PUT", "http://"+c.DeviceAddress+uri,
 		bytes.NewReader(data),
@@ -102,7 +102,7 @@ func (c *Client) Put(uri string, data []byte) (*http.Response, error) {
 	return c.Do(req)
 }
 
-func (c *Client) Handle() (err error) {
+func (c *Conn) Handle() (err error) {
 	defer func() {
 		if c.conn == nil {
 			err = nil

pkg/hap/pairing.go

@@ -1,4 +1,4 @@
-package homekit
+package hap
 
 import (
 	"bufio"

pkg/hap/secure.go

@@ -1,4 +1,4 @@
-package homekit
+package hap
 
 import (
 	"encoding/binary"

pkg/hap/server.go

@@ -1,4 +1,4 @@
-package homekit
+package hap
 
 import (
 	"bufio"

pkg/homekit/camera/session.go

@@ -1,103 +0,0 @@
-package camera
-
-import (
-	cryptorand "crypto/rand"
-	"encoding/binary"
-	"github.com/brutella/hap/rtp"
-)
-
-type Session struct {
-	Offer  *rtp.SetupEndpoints
-	Answer *rtp.SetupEndpointsResponse
-	Config *rtp.StreamConfiguration
-}
-
-func NewSession() *Session {
-	sessionID := RandomBytes(16)
-	s := &Session{
-		Offer: &rtp.SetupEndpoints{
-			SessionId: sessionID,
-			Video: rtp.CryptoSuite{
-				MasterKey:  RandomBytes(16),
-				MasterSalt: RandomBytes(14),
-			},
-			Audio: rtp.CryptoSuite{
-				MasterKey:  RandomBytes(16),
-				MasterSalt: RandomBytes(14),
-			},
-		},
-		Config: &rtp.StreamConfiguration{
-			Command: rtp.SessionControlCommand{
-				Identifier: sessionID,
-				Type:       rtp.SessionControlCommandTypeStart,
-			},
-			Video: rtp.VideoParameters{
-				CodecType: rtp.VideoCodecType_H264,
-				CodecParams: rtp.VideoCodecParameters{
-					Profiles: []rtp.VideoCodecProfile{
-						{Id: rtp.VideoCodecProfileMain},
-					},
-					Levels: []rtp.VideoCodecLevel{
-						{Level: rtp.VideoCodecLevel4},
-					},
-					Packetizations: []rtp.VideoCodecPacketization{
-						{Mode: rtp.VideoCodecPacketizationModeNonInterleaved},
-					},
-				},
-				Attributes: rtp.VideoCodecAttributes{
-					Width: 1920, Height: 1080, Framerate: 30,
-				},
-				RTP: rtp.RTPParams{
-					PayloadType:             99,
-					Ssrc:                    RandomUint32(),
-					Bitrate:                 299,
-					Interval:                0.5,
-					ComfortNoisePayloadType: 98,
-					MTU:                     0,
-				},
-			},
-			Audio: rtp.AudioParameters{
-				CodecType: rtp.AudioCodecType_AAC_ELD,
-				CodecParams: rtp.AudioCodecParameters{
-					Channels:   1,
-					Bitrate:    rtp.AudioCodecBitrateVariable,
-					Samplerate: rtp.AudioCodecSampleRate16Khz,
-					PacketTime: 30,
-				},
-				RTP: rtp.RTPParams{
-					PayloadType: 110,
-					Ssrc:        RandomUint32(),
-					Bitrate:     24,
-					Interval:    5,
-					MTU:         13,
-				},
-				ComfortNoise: false,
-			},
-		},
-	}
-	return s
-}
-
-func (s *Session) SetLocalEndpoint(host string, port uint16) {
-	s.Offer.ControllerAddr = rtp.Addr{
-		IPAddr:       host,
-		VideoRtpPort: port,
-		AudioRtpPort: port,
-	}
-}
-
-func (s *Session) SetVideo() {
-
-}
-
-func RandomBytes(size int) []byte {
-	data := make([]byte, size)
-	_, _ = cryptorand.Read(data)
-	return data
-}
-
-func RandomUint32() uint32 {
-	data := make([]byte, 4)
-	_, _ = cryptorand.Read(data)
-	return binary.BigEndian.Uint32(data)
-}

pkg/homekit/client.go

@@ -1,732 +1,265 @@
 package homekit
 
 import (
-	"bufio"
-	"crypto/sha512"
-	"encoding/hex"
-	"encoding/json"
 	"errors"
 	"fmt"
-	"github.com/AlexxIT/go2rtc/pkg/homekit/mdns"
+	"github.com/AlexxIT/go2rtc/pkg/hap"
+	"github.com/AlexxIT/go2rtc/pkg/hap/camera"
+	"github.com/AlexxIT/go2rtc/pkg/srtp"
 	"github.com/AlexxIT/go2rtc/pkg/streamer"
-	"github.com/brutella/hap"
+	"github.com/brutella/hap/characteristic"
-	"github.com/brutella/hap/chacha20poly1305"
+	"github.com/brutella/hap/rtp"
-	"github.com/brutella/hap/curve25519"
-	"github.com/brutella/hap/ed25519"
-	"github.com/brutella/hap/hkdf"
-	"github.com/brutella/hap/tlv8"
-	"github.com/tadglines/go-pkgs/crypto/srp"
-	"io"
 	"net"
-	"net/http"
 	"net/url"
-	"strings"
 )
 
-// Client for HomeKit. DevicePublic can be null.
 type Client struct {
 	streamer.Element
 
-	DeviceAddress string // including port
+	conn   *hap.Conn
-	DeviceID      string
+	exit   chan error
-	DevicePublic  []byte
+	server *srtp.Server
-	ClientID      string
+	url    string
-	ClientPrivate []byte
 
-	OnEvent func(res *http.Response)
+	medias []*streamer.Media
-	Output  func(msg interface{})
+	tracks []*streamer.Track
 
-	conn         net.Conn
+	sessions []*srtp.Session
-	secure       *Secure
-	httpResponse chan *bufio.Reader
 }
 
-func NewClient(rawURL string) (*Client, error) {
+func NewClient(rawURL string, server *srtp.Server) (*Client, error) {
 	u, err := url.Parse(rawURL)
 	if err != nil {
 		return nil, err
 	}
 
 	query := u.Query()
-	c := &Client{
+	c := &hap.Conn{
 		DeviceAddress: u.Host,
 		DeviceID:      query.Get("device_id"),
-		DevicePublic:  DecodeKey(query.Get("device_public")),
+		DevicePublic:  hap.DecodeKey(query.Get("device_public")),
 		ClientID:      query.Get("client_id"),
-		ClientPrivate: DecodeKey(query.Get("client_private")),
+		ClientPrivate: hap.DecodeKey(query.Get("client_private")),
 	}
 
-	return c, nil
+	return &Client{conn: c, server: server}, nil
-}
-
-func Pair(deviceID, pin string) (*Client, error) {
-	entry := mdns.GetEntry(deviceID)
-	if entry == nil {
-		return nil, errors.New("can't find device via mDNS")
-	}
-
-	c := &Client{
-		DeviceAddress: fmt.Sprintf("%s:%d", entry.AddrV4.String(), entry.Port),
-		DeviceID:      deviceID,
-		ClientID:      GenerateUUID(),
-		ClientPrivate: GenerateKey(),
-	}
-
-	var mfi bool
-	for _, field := range entry.InfoFields {
-		if field[:2] == "ff" {
-			if field[3] == '1' {
-				mfi = true
-			}
-			break
-		}
-	}
-
-	return c, c.Pair(mfi, pin)
-}
-
-func (c *Client) ClientPublic() []byte {
-	return c.ClientPrivate[32:]
-}
-
-func (c *Client) URL() string {
-	return fmt.Sprintf(
-		"homekit://%s?device_id=%s&device_public=%16x&client_id=%s&client_private=%32x",
-		c.DeviceAddress, c.DeviceID, c.DevicePublic, c.ClientID, c.ClientPrivate,
-	)
-}
-
-func (c *Client) DialAndServe() error {
-	if err := c.Dial(); err != nil {
-		return err
-	}
-	return c.Handle()
 }
 
 func (c *Client) Dial() error {
-	// update device host before dial
+	if err := c.conn.Dial(); err != nil {
-	if host := mdns.GetAddress(c.DeviceID); host != "" {
-		c.DeviceAddress = host
-	}
-
-	var err error
-	c.conn, err = net.Dial("tcp", c.DeviceAddress)
-	if err != nil {
 		return err
 	}
 
-	// STEP M1: send our session public to device
+	c.exit = make(chan error)
-	sessionPublic, sessionPrivate := curve25519.GenerateKeyPair()
 
-	// 1. generate payload
+	go func() {
-	// important not include other fields
+		//start goroutine for reading responses from camera
-	requestM1 := struct {
+		c.exit <- c.conn.Handle()
-		State     byte   `tlv8:"6"`
+	}()
-		PublicKey []byte `tlv8:"3"`
+
-	}{
+	return nil
-		State:     hap.M1,
+}
-		PublicKey: sessionPublic[:],
+
-	}
+func (c *Client) GetMedias() []*streamer.Media {
-	// 2. pack payload to TLV8
+	if c.medias == nil {
-	buf, err := tlv8.Marshal(requestM1)
+		c.medias = c.getMedias()
-	if err != nil {
-		return err
 	}
 
-	// 3. send request
+	return c.medias
-	resp, err := c.Post(UriPairVerify, buf)
+}
-	if err != nil {
-		return err
-	}
 
-	// STEP M2: unpack deviceID from response
+func (c *Client) GetTrack(media *streamer.Media, codec *streamer.Codec) *streamer.Track {
-	responseM2 := PairVerifyPayload{}
+	for _, track := range c.tracks {
-	if err = tlv8.UnmarshalReader(resp.Body, &responseM2); err != nil {
+		if track.Codec == codec {
-		return err
+			return track
-	}
-
-	// 1. generate session shared key
-	var deviceSessionPublic [32]byte
-	copy(deviceSessionPublic[:], responseM2.PublicKey)
-	sessionShared := curve25519.SharedSecret(sessionPrivate, deviceSessionPublic)
-	sessionKey, err := hkdf.Sha512(
-		sessionShared[:], []byte("Pair-Verify-Encrypt-Salt"),
-		[]byte("Pair-Verify-Encrypt-Info"),
-	)
-
-	// 2. decrypt M2 response with session key
-	msg := responseM2.EncryptedData[:len(responseM2.EncryptedData)-16]
-	var mac [16]byte
-	copy(mac[:], responseM2.EncryptedData[len(msg):]) // 16 byte (MAC)
-
-	buf, err = chacha20poly1305.DecryptAndVerify(
-		sessionKey[:], []byte("PV-Msg02"), msg, mac, nil,
-	)
-
-	// 3. unpack payload from TLV8
-	payloadM2 := PairVerifyPayload{}
-	if err = tlv8.Unmarshal(buf, &payloadM2); err != nil {
-		return err
-	}
-
-	// 4. verify signature for M2 response with device public
-	// device session + device id + our session
-	if c.DevicePublic != nil {
-		buf = nil
-		buf = append(buf, responseM2.PublicKey[:]...)
-		buf = append(buf, []byte(payloadM2.Identifier)...)
-		buf = append(buf, sessionPublic[:]...)
-		if !ed25519.ValidateSignature(
-			c.DevicePublic[:], buf, payloadM2.Signature,
-		) {
-			return errors.New("device public signature invalid")
 		}
 	}
 
-	// STEP M3: send our clientID to device
+	track := &streamer.Track{Codec: codec, Direction: media.Direction}
-	// 1. generate signature with our private key
+	c.tracks = append(c.tracks, track)
-	// (our session + our ID + device session)
+	return track
-	buf = nil
+}
-	buf = append(buf, sessionPublic[:]...)
+
-	buf = append(buf, []byte(c.ClientID)...)
+func (c *Client) Start() error {
-	buf = append(buf, responseM2.PublicKey[:]...)
+	if c.tracks == nil {
-	signature, err := ed25519.Signature(c.ClientPrivate[:], buf)
+		return errors.New("producer without tracks")
+	}
+
+	// get our server local IP-address
+	host, _, err := net.SplitHostPort(c.conn.LocalAddr())
 	if err != nil {
 		return err
 	}
 
-	// 2. generate payload
+	// TODO: set right config
-	payloadM3 := struct {
+	vp := &rtp.VideoParameters{
-		Identifier string `tlv8:"1"`
+		CodecType: rtp.VideoCodecType_H264,
-		Signature  []byte `tlv8:"10"`
+		CodecParams: rtp.VideoCodecParameters{
-	}{
+			Profiles: []rtp.VideoCodecProfile{
-		Identifier: c.ClientID,
+				{Id: rtp.VideoCodecProfileMain},
-		Signature:  signature,
+			},
+			Levels: []rtp.VideoCodecLevel{
+				{Level: rtp.VideoCodecLevel4},
+			},
+			Packetizations: []rtp.VideoCodecPacketization{
+				{Mode: rtp.VideoCodecPacketizationModeNonInterleaved},
+			},
+		},
+		Attributes: rtp.VideoCodecAttributes{
+			Width: 1920, Height: 1080, Framerate: 30,
+		},
 	}
-	// 3. pack payload to TLV8
+
-	buf, err = tlv8.Marshal(payloadM3)
+	ap := &rtp.AudioParameters{
-	if err != nil {
+		CodecType: rtp.AudioCodecType_AAC_ELD,
+		CodecParams: rtp.AudioCodecParameters{
+			Channels:   1,
+			Bitrate:    rtp.AudioCodecBitrateVariable,
+			Samplerate: rtp.AudioCodecSampleRate16Khz,
+			// packet time=20 => AAC-ELD packet size=480
+			// packet time=30 => AAC-ELD packet size=480
+			// packet time=40 => AAC-ELD packet size=480
+			// packet time=60 => AAC-LD  packet size=960
+			PacketTime: 40,
+		},
+	}
+
+	// setup HomeKit stream session
+	hkSession := camera.NewSession(vp, ap)
+	hkSession.SetLocalEndpoint(host, c.server.Port())
+
+	// create client for processing camera accessory
+	cam := camera.NewClient(c.conn)
+	// try to start HomeKit stream
+	if err = cam.StartStream(hkSession); err != nil {
 		return err
 	}
 
-	// 4. encrypt payload with session key
+	// SRTP Video Session
-	msg, mac, _ = chacha20poly1305.EncryptAndSeal(
+	vs := &srtp.Session{
-		sessionKey[:], []byte("PV-Msg03"), buf, nil,
+		LocalSSRC:  hkSession.Config.Video.RTP.Ssrc,
-	)
+		RemoteSSRC: hkSession.Answer.SsrcVideo,
-
-	// 4. generate request
-	requestM3 := struct {
-		EncryptedData []byte `tlv8:"5"`
-		State         byte   `tlv8:"6"`
-	}{
-		State:         hap.M3,
-		EncryptedData: append(msg, mac[:]...),
 	}
-	// 5. pack payload to TLV8
+	if err = vs.SetKeys(
-	buf, err = tlv8.Marshal(requestM3)
+		hkSession.Offer.Video.MasterKey, hkSession.Offer.Video.MasterSalt,
-	if err != nil {
+		hkSession.Answer.Video.MasterKey, hkSession.Answer.Video.MasterSalt,
+	); err != nil {
 		return err
 	}
 
-	resp, err = c.Post(UriPairVerify, buf)
+	// SRTP Audio Session
-	if err != nil {
+	as := &srtp.Session{
+		LocalSSRC:  hkSession.Config.Audio.RTP.Ssrc,
+		RemoteSSRC: hkSession.Answer.SsrcAudio,
+	}
+	if err = as.SetKeys(
+		hkSession.Offer.Audio.MasterKey, hkSession.Offer.Audio.MasterSalt,
+		hkSession.Answer.Audio.MasterKey, hkSession.Answer.Audio.MasterSalt,
+	); err != nil {
 		return err
 	}
 
-	// STEP M4. Read response
+	for _, track := range c.tracks {
-	responseM4 := PairVerifyPayload{}
+		switch track.Codec.Name {
-	if err = tlv8.UnmarshalReader(resp.Body, &responseM4); err != nil {
+		case streamer.CodecH264:
-		return err
+			vs.Track = track
+		case streamer.CodecELD:
+			as.Track = track
+		}
 	}
 
-	// 1. check response state
+	c.server.AddSession(vs)
-	if responseM4.State != 4 || responseM4.Status != 0 {
+	c.server.AddSession(as)
-		return fmt.Errorf("wrong M4 response: %+v", responseM4)
+
+	c.sessions = []*srtp.Session{vs, as}
+
+	return <-c.exit
+}
+
+func (c *Client) Stop() error {
+	err := c.conn.Close()
+
+	for _, session := range c.sessions {
+		c.server.RemoveSession(session)
 	}
 
-	c.secure, err = NewSecure(sessionShared, false)
-	//c.secure.Buffer = bytes.NewBuffer(nil)
-	c.secure.Conn = c.conn
-
-	c.httpResponse = make(chan *bufio.Reader, 10)
-
 	return err
 }
 
-// https://github.com/apple/HomeKitADK/blob/master/HAP/HAPPairingPairSetup.c
+func (c *Client) getMedias() []*streamer.Media {
-func (c *Client) Pair(mfi bool, pin string) (err error) {
+	var medias []*streamer.Media
-	pin = strings.ReplaceAll(pin, "-", "")
-	if len(pin) != 8 {
-		return fmt.Errorf("wrong PIN format: %s", pin)
-	}
-	pin = pin[:3] + "-" + pin[3:5] + "-" + pin[5:]
 
-	c.conn, err = net.Dial("tcp", c.DeviceAddress)
+	accs, err := c.conn.GetAccessories()
 	if err != nil {
-		return
-	}
-
-	// STEP M1. Generate request
-	reqM1 := struct {
-		Method byte `tlv8:"0"`
-		State  byte `tlv8:"6"`
-	}{
-		State: hap.M1,
-	}
-	if mfi {
-		reqM1.Method = 1 // ff=1 => method=1, ff=2 => method=0
-	}
-	buf, err := tlv8.Marshal(reqM1)
-	if err != nil {
-		return
-	}
-
-	// STEP M1. Send request
-	res, err := c.Post(UriPairSetup, buf)
-	if err != nil {
-		return
-	}
-
-	// STEP M2. Read response
-	resM2 := struct {
-		Salt      []byte `tlv8:"2"`
-		PublicKey []byte `tlv8:"3"` // server public key, aka session.B
-		State     byte   `tlv8:"6"`
-		Error     byte   `tlv8:"7"`
-	}{}
-	if err = tlv8.UnmarshalReader(res.Body, &resM2); err != nil {
-		return
-	}
-	if resM2.State != 2 || resM2.Error > 0 {
-		return fmt.Errorf("wrong M2: %+v", resM2)
-	}
-
-	// STEP M3. Generate session using pin
-	username := []byte("Pair-Setup")
-
-	SRP, err := srp.NewSRP(
-		"rfc5054.3072", sha512.New, keyDerivativeFuncRFC2945(username),
-	)
-	if err != nil {
-		return
-	}
-
-	SRP.SaltLength = 16
-
-	// username: "Pair-Setup"
-	// password: PIN (with dashes)
-	session := SRP.NewClientSession(username, []byte(pin))
-	sessionShared, err := session.ComputeKey(resM2.Salt, resM2.PublicKey)
-	if err != nil {
-		return
-	}
-
-	// STEP M3. Generate request
-	reqM3 := struct {
-		PublicKey []byte `tlv8:"3"`
-		Proof     []byte `tlv8:"4"`
-		State     byte   `tlv8:"6"`
-	}{
-		PublicKey: session.GetA(), // client public key, aka session.A
-		Proof:     session.ComputeAuthenticator(),
-		State:     hap.M3,
-	}
-	buf, err = tlv8.Marshal(reqM3)
-	if err != nil {
-		return err
-	}
-
-	// STEP M3. Send request
-	res, err = c.Post(UriPairSetup, buf)
-	if err != nil {
-		return
-	}
-
-	// STEP M4. Read response
-	resM4 := struct {
-		Proof []byte `tlv8:"4"` // server proof
-		State byte   `tlv8:"6"`
-		Error byte   `tlv8:"7"`
-	}{}
-	if err = tlv8.UnmarshalReader(res.Body, &resM4); err != nil {
-		return
-	}
-	if resM4.Error == 2 {
-		return fmt.Errorf("wrong PIN: %s", pin)
-	}
-	if resM4.State != 4 || resM4.Error > 0 {
-		return fmt.Errorf("wrong M4: %+v", resM4)
-	}
-
-	// STEP M4. Verify response
-	if !session.VerifyServerAuthenticator(resM4.Proof) {
-		return errors.New("verify server auth fail")
-	}
-
-	// STEP M5. Generate signature
-	saltKey, err := hkdf.Sha512(
-		sessionShared, []byte("Pair-Setup-Controller-Sign-Salt"),
-		[]byte("Pair-Setup-Controller-Sign-Info"),
-	)
-	if err != nil {
-		return
-	}
-
-	buf = nil
-	buf = append(buf, saltKey[:]...)
-	buf = append(buf, []byte(c.ClientID)...)
-	buf = append(buf, c.ClientPublic()...)
-
-	signature, err := ed25519.Signature(c.ClientPrivate, buf)
-	if err != nil {
-		return
-	}
-
-	// STEP M5. Generate payload
-	msgM5 := struct {
-		Identifier string `tlv8:"1"`
-		PublicKey  []byte `tlv8:"3"`
-		Signature  []byte `tlv8:"10"`
-	}{
-		Identifier: c.ClientID,
-		PublicKey:  c.ClientPublic(),
-		Signature:  signature,
-	}
-	buf, err = tlv8.Marshal(msgM5)
-	if err != nil {
-		return
-	}
-
-	// STEP M5. Encrypt payload
-	sessionKey, err := hkdf.Sha512(
-		sessionShared, []byte("Pair-Setup-Encrypt-Salt"),
-		[]byte("Pair-Setup-Encrypt-Info"),
-	)
-	if err != nil {
-		return
-	}
-	buf, mac, _ := chacha20poly1305.EncryptAndSeal(
-		sessionKey[:], []byte("PS-Msg05"), buf, nil,
-	)
-
-	// STEP M5. Generate request
-	reqM5 := struct {
-		EncryptedData []byte `tlv8:"5"`
-		State         byte   `tlv8:"6"`
-	}{
-		EncryptedData: append(buf, mac[:]...),
-		State:         hap.M5,
-	}
-	buf, err = tlv8.Marshal(reqM5)
-	if err != nil {
-		return err
-	}
-
-	// STEP M5. Send request
-	res, err = c.Post(UriPairSetup, buf)
-	if err != nil {
-		return
-	}
-
-	// STEP M6. Read response
-	resM6 := struct {
-		EncryptedData []byte `tlv8:"5"`
-		State         byte   `tlv8:"6"`
-		Error         byte   `tlv8:"7"`
-	}{}
-	if err = tlv8.UnmarshalReader(res.Body, &resM6); err != nil {
-		return
-	}
-	if resM6.State != 6 || resM6.Error > 0 {
-		return fmt.Errorf("wrong M6: %+v", resM2)
-	}
-
-	// STEP M6. Decrypt payload
-	msg := resM6.EncryptedData[:len(resM6.EncryptedData)-16]
-	copy(mac[:], resM6.EncryptedData[len(msg):]) // 16 byte (MAC)
-
-	buf, err = chacha20poly1305.DecryptAndVerify(
-		sessionKey[:], []byte("PS-Msg06"), msg, mac, nil,
-	)
-	if err != nil {
-		return
-	}
-
-	msgM6 := struct {
-		Identifier []byte `tlv8:"1"`
-		PublicKey  []byte `tlv8:"3"`
-		Signature  []byte `tlv8:"10"`
-	}{}
-	if err = tlv8.Unmarshal(buf, &msgM6); err != nil {
-		return
-	}
-
-	// STEP M6. Verify payload
-	if saltKey, err = hkdf.Sha512(
-		sessionShared, []byte("Pair-Setup-Accessory-Sign-Salt"),
-		[]byte("Pair-Setup-Accessory-Sign-Info"),
-	); err != nil {
-		return
-	}
-
-	buf = nil
-	buf = append(buf, saltKey[:]...)
-	buf = append(buf, msgM6.Identifier...)
-	buf = append(buf, msgM6.PublicKey...)
-
-	if !ed25519.ValidateSignature(
-		msgM6.PublicKey[:], buf, msgM6.Signature,
-	) {
-		return errors.New("wrong server signature")
-	}
-
-	if c.DeviceID != string(msgM6.Identifier) {
-		return fmt.Errorf("wrong Device ID: %s", msgM6.Identifier)
-	}
-
-	c.DevicePublic = msgM6.PublicKey
-
-	return nil
-}
-
-func (c *Client) Close() error {
-	if c.conn == nil {
 		return nil
 	}
-	conn := c.conn
-	c.conn = nil
-	return conn.Close()
-}
 
-func (c *Client) GetAccessories() ([]*Accessory, error) {
+	acc := accs[0]
-	res, err := c.Get("/accessories")
+
-	if err != nil {
+	// get supported video config (not really necessary)
-		return nil, err
+	char := acc.GetCharacter(characteristic.TypeSupportedVideoStreamConfiguration)
+	v1 := &rtp.VideoStreamConfiguration{}
+	if err = char.ReadTLV8(v1); err != nil {
+		return nil
 	}
 
-	data, err := io.ReadAll(res.Body)
+	for _, hkCodec := range v1.Codecs {
-	if err != nil {
+		codec := &streamer.Codec{ClockRate: 90000}
-		return nil, err
-	}
 
-	p := Accessories{}
+		switch hkCodec.Type {
-	if err = json.Unmarshal(data, &p); err != nil {
+		case rtp.VideoCodecType_H264:
-		return nil, err
+			codec.Name = streamer.CodecH264
-	}
+			codec.FmtpLine = "profile-level-id=420029"
-
+		default:
-	for _, accs := range p.Accessories {
+			fmt.Printf("unknown codec: %d", hkCodec.Type)
-		for _, serv := range accs.Services {
+			continue
-			for _, char := range serv.Characters {
-				char.AID = accs.AID
-			}
 		}
-	}
 
-	return p.Accessories, nil
+		media := &streamer.Media{
-}
+			Kind: streamer.KindVideo, Direction: streamer.DirectionSendonly,
-
+			Codecs: []*streamer.Codec{codec},
-func (c *Client) GetCharacters(query string) ([]*Character, error) {
-	res, err := c.Get("/characteristics?id=" + query)
-	if err != nil {
-		return nil, err
-	}
-
-	data, err := io.ReadAll(res.Body)
-	if err != nil {
-		return nil, err
-	}
-
-	ch := Characters{}
-	if err = json.Unmarshal(data, &ch); err != nil {
-		return nil, err
-	}
-	return ch.Characters, nil
-}
-
-func (c *Client) GetCharacter(char *Character) error {
-	query := fmt.Sprintf("%d.%d", char.AID, char.IID)
-	chars, err := c.GetCharacters(query)
-	if err != nil {
-		return err
-	}
-	char.Value = chars[0].Value
-	return nil
-}
-
-func (c *Client) PutCharacters(characters ...*Character) (err error) {
-	for i, char := range characters {
-		if char.Event != nil {
-			char = &Character{AID: char.AID, IID: char.IID, Event: char.Event}
-		} else {
-			char = &Character{AID: char.AID, IID: char.IID, Value: char.Value}
 		}
-		characters[i] = char
+		medias = append(medias, media)
-	}
-	var data []byte
-	if data, err = json.Marshal(Characters{characters}); err != nil {
-		return
 	}
 
-	var res *http.Response
+	char = acc.GetCharacter(characteristic.TypeSupportedAudioStreamConfiguration)
-	if res, err = c.Put("/characteristics", data); err != nil {
+	v2 := &rtp.AudioStreamConfiguration{}
-		return
+	if err = char.ReadTLV8(v2); err != nil {
-	}
-
-	if res.StatusCode >= 400 {
-		return errors.New("wrong response status")
-	}
-
-	return
-}
-
-func (c *Client) GetImage(width, height int) ([]byte, error) {
-	res, err := c.Post(
-		"/resource", []byte(fmt.Sprintf(
-			`{"image-width":%d,"image-height":%d,"resource-type":"image","reason":0}`,
-			width, height,
-		)),
-	)
-	if err != nil {
-		return nil, err
-	}
-	return io.ReadAll(res.Body)
-}
-
-//func (c *Client) onEventData(r io.Reader) error {
-//	if c.OnEvent == nil {
-//		return nil
-//	}
-//
-//	data, err := io.ReadAll(r)
-//
-//	ch := Characters{}
-//	if err = json.Unmarshal(data, &ch); err != nil {
-//		return err
-//	}
-//
-//	c.OnEvent(ch.Characters)
-//
-//	return nil
-//}
-
-func (c *Client) ListPairings() error {
-	pReq := struct {
-		Method byte `tlv8:"0"`
-		State  byte `tlv8:"6"`
-	}{
-		Method: hap.MethodListPairings,
-		State:  hap.M1,
-	}
-	data, err := tlv8.Marshal(pReq)
-	if err != nil {
-		return err
-	}
-
-	res, err := c.Post("/pairings", data)
-	if err != nil {
-		return err
-	}
-
-	data, err = io.ReadAll(res.Body)
-	// TODO: don't know how to fix array of items
-	var pRes struct {
-		State      byte   `tlv8:"6"`
-		Identifier string `tlv8:"1"`
-		PublicKey  []byte `tlv8:"3"`
-		Permission byte   `tlv8:"11"`
-	}
-	if err = tlv8.Unmarshal(data, &pRes); err != nil {
-		return err
-	}
-
-	return nil
-}
-
-func (c *Client) PairingsAdd(clientID string, clientPublic []byte, admin bool) error {
-	pReq := struct {
-		Method     byte   `tlv8:"0"`
-		Identifier string `tlv8:"1"`
-		PublicKey  []byte `tlv8:"3"`
-		State      byte   `tlv8:"6"`
-		Permission byte   `tlv8:"11"`
-	}{
-		Method:     hap.MethodAddPairing,
-		Identifier: clientID,
-		PublicKey:  clientPublic,
-		State:      hap.M1,
-		Permission: hap.PermissionUser,
-	}
-	if admin {
-		pReq.Permission = hap.PermissionAdmin
-	}
-
-	data, err := tlv8.Marshal(pReq)
-	if err != nil {
-		return err
-	}
-
-	res, err := c.Post("/pairings", data)
-	if err != nil {
-		return err
-	}
-
-	data, err = io.ReadAll(res.Body)
-	var pRes struct {
-		State   byte `tlv8:"6"`
-		Unknown byte `tlv8:"7"`
-	}
-	if err = tlv8.Unmarshal(data, &pRes); err != nil {
-		return err
-	}
-
-	return nil
-}
-
-func (c *Client) DeletePairing(id string) error {
-	reqM1 := struct {
-		State      byte   `tlv8:"6"`
-		Method     byte   `tlv8:"0"`
-		Identifier string `tlv8:"1"`
-	}{
-		State:      hap.M1,
-		Method:     hap.MethodDeletePairing,
-		Identifier: id,
-	}
-	data, err := tlv8.Marshal(reqM1)
-	if err != nil {
-		return err
-	}
-
-	res, err := c.Post("/pairings", data)
-	if err != nil {
-		return err
-	}
-
-	data, err = io.ReadAll(res.Body)
-	var resM2 struct {
-		State byte `tlv8:"6"`
-	}
-	if err = tlv8.Unmarshal(data, &resM2); err != nil {
-		return err
-	}
-	if resM2.State != hap.M2 {
-		return errors.New("wrong state")
-	}
-
-	return nil
-}
-
-func (c *Client) LocalAddr() string {
-	return c.conn.LocalAddr().String()
-}
-
-func DecodeKey(s string) []byte {
-	if s == "" {
 		return nil
 	}
-	data, err := hex.DecodeString(s)
+
-	if err != nil {
+	for _, hkCodec := range v2.Codecs {
-		return nil
+		codec := &streamer.Codec{
+			Channels: uint16(hkCodec.Parameters.Channels),
+		}
+
+		switch hkCodec.Parameters.Samplerate {
+		case rtp.AudioCodecSampleRate8Khz:
+			codec.ClockRate = 8000
+		case rtp.AudioCodecSampleRate16Khz:
+			codec.ClockRate = 16000
+		case rtp.AudioCodecSampleRate24Khz:
+			codec.ClockRate = 24000
+		default:
+			panic(fmt.Sprintf("unknown clockrate: %d", hkCodec.Parameters.Samplerate))
+		}
+
+		switch hkCodec.Type {
+		case rtp.AudioCodecType_AAC_ELD:
+			codec.Name = streamer.CodecELD
+			// only this value supported by FFmpeg
+			codec.FmtpLine = "profile-level-id=1;mode=AAC-hbr;sizelength=13;indexlength=3;indexdeltalength=3;config=F8EC3000"
+		default:
+			fmt.Printf("unknown codec: %d", hkCodec.Type)
+			continue
+		}
+
+		media := &streamer.Media{
+			Kind: streamer.KindAudio, Direction: streamer.DirectionSendonly,
+			Codecs: []*streamer.Codec{codec},
+		}
+		medias = append(medias, media)
 	}
-	return data
+
+	return medias
 }

pkg/httpflv/README.md

@@ -0,0 +1,3 @@
+## Useful links
+
+- https://medium.com/@nate510/don-t-use-go-s-default-http-client-4804cb19f779

pkg/httpflv/httpflv.go

@@ -0,0 +1,100 @@
+package httpflv
+
+import (
+	"bufio"
+	"errors"
+	"github.com/deepch/vdk/av"
+	"github.com/deepch/vdk/codec/h264parser"
+	"github.com/deepch/vdk/format/flv/flvio"
+	"github.com/deepch/vdk/utils/bits/pio"
+	"io"
+	"net/http"
+)
+
+func Dial(uri string) (*Conn, error) {
+	req, err := http.NewRequest("GET", uri, nil)
+	if err != nil {
+		return nil, err
+	}
+
+	res, err := http.DefaultClient.Do(req)
+	if err != nil {
+		return nil, err
+	}
+
+	c := Conn{
+		conn:   res.Body,
+		reader: bufio.NewReaderSize(res.Body, pio.RecommendBufioSize),
+		buf:    make([]byte, 256),
+	}
+
+	if _, err = io.ReadFull(c.reader, c.buf[:flvio.FileHeaderLength]); err != nil {
+		return nil, err
+	}
+
+	flags, n, err := flvio.ParseFileHeader(c.buf)
+	if err != nil {
+		return nil, err
+	}
+
+	if flags&flvio.FILE_HAS_VIDEO == 0 {
+		return nil, errors.New("not supported")
+	}
+
+	if _, err = c.reader.Discard(n); err != nil {
+		return nil, err
+	}
+
+	return &c, nil
+}
+
+type Conn struct {
+	conn      io.ReadCloser
+	reader    *bufio.Reader
+	buf       []byte
+}
+
+func (c *Conn) Streams() ([]av.CodecData, error) {
+	for {
+		tag, _, err := flvio.ReadTag(c.reader, c.buf)
+		if err != nil {
+			return nil, err
+		}
+
+		if tag.Type != flvio.TAG_VIDEO || tag.AVCPacketType != flvio.AAC_SEQHDR {
+			continue
+		}
+
+		stream, err := h264parser.NewCodecDataFromAVCDecoderConfRecord(tag.Data)
+		if err != nil {
+			return nil, err
+		}
+
+		return []av.CodecData{stream}, nil
+	}
+}
+
+func (c *Conn) ReadPacket() (av.Packet, error) {
+	for {
+		tag, ts, err := flvio.ReadTag(c.reader, c.buf)
+		if err != nil {
+			return av.Packet{}, err
+		}
+
+		if tag.Type != flvio.TAG_VIDEO || tag.AVCPacketType != flvio.AVC_NALU {
+			continue
+		}
+
+		return av.Packet{
+			Idx:             0,
+			Data:            tag.Data,
+			CompositionTime: flvio.TsToTime(tag.CompositionTime),
+			IsKeyFrame:      tag.FrameType == flvio.FRAME_KEY,
+			Time:            flvio.TsToTime(ts),
+		}, nil
+	}
+}
+
+func (c *Conn) Close() (err error) {
+	return c.conn.Close()
+}

pkg/ivideon/client.go

@@ -6,7 +6,6 @@ import (
 	"encoding/binary"
 	"encoding/json"
 	"fmt"
-	"github.com/AlexxIT/go2rtc/pkg/h264"
 	"github.com/AlexxIT/go2rtc/pkg/streamer"
 	"github.com/deepch/vdk/codec/h264parser"
 	"github.com/deepch/vdk/format/fmp4/fmp4io"
@@ -162,9 +161,12 @@ func (c *Client) getTracks() error {
 					continue
 				}
 
-				codec := streamer.NewCodec(streamer.CodecH264)
+				codec := &streamer.Codec{
-				codec.FmtpLine = "profile-level-id=" + msg.CodecString[i+1:]
+					Name:        streamer.CodecH264,
-				codec.PayloadType = h264.PayloadTypeAVC
+					ClockRate:   90000,
+					FmtpLine:    "profile-level-id=" + msg.CodecString[i+1:],
+					PayloadType: streamer.PayloadTypeMP4,
+				}
 
 				i = bytes.Index(msg.Data, []byte("avcC")) - 4
 				if i < 0 {

pkg/mp4/README.md

@@ -21,3 +21,4 @@ Stream #0:0(eng): Video: hevc (Main) (hvc1 / 0x31637668), yuv420p(tv, progressiv
 - https://stackoverflow.com/questions/32152090/encode-h265-to-hvc1-codec
 - https://jellyfin.org/docs/general/clients/codec-support.html
 - https://github.com/StaZhu/enable-chromium-hevc-hardware-decoding
+- https://developer.mozilla.org/ru/docs/Web/Media/Formats/codecs_parameter

pkg/mp4/const.go

@@ -3,6 +3,8 @@ package mp4
 import (
 	"encoding/binary"
 	"github.com/deepch/vdk/format/mp4/mp4io"
+	"github.com/deepch/vdk/format/mp4f"
+	"github.com/deepch/vdk/format/mp4f/mp4fio"
 	"time"
 )
 
@@ -37,25 +39,17 @@ func MOOV() *mp4io.Movie {
 			SelectionDuration: time0,
 			CurrentTime:       time0,
 		},
-		MovieExtend: &mp4io.MovieExtend{
+		MovieExtend: &mp4io.MovieExtend{},
-			Tracks: []*mp4io.TrackExtend{
-				{
-					TrackId:               1,
-					DefaultSampleDescIdx:  1,
-					DefaultSampleDuration: 40,
-				},
-			},
-		},
 	}
 }
 
-func TRAK() *mp4io.Track {
+func TRAK(id int) *mp4io.Track {
 	return &mp4io.Track{
 		// trak > tkhd
 		Header: &mp4io.TrackHeader{
-			TrackId:    int32(1), // change me
+			TrackId:    int32(id),
-			Flags:      0x0007,   // 7 ENABLED IN-MOVIE IN-PREVIEW
+			Flags:      0x0007, // 7 ENABLED IN-MOVIE IN-PREVIEW
-			Duration:   0,        // OK
+			Duration:   0,      // OK
 			Matrix:     matrix,
 			CreateTime: time0,
 			ModifyTime: time0,
@@ -92,3 +86,15 @@ func TRAK() *mp4io.Track {
 		},
 	}
 }
+
+func ESDS(conf []byte) *mp4f.FDummy {
+	esds := &mp4fio.ElemStreamDesc{DecConfig: conf}
+
+	b := make([]byte, esds.Len())
+	esds.Marshal(b)
+
+	return &mp4f.FDummy{
+		Data: b,
+		Tag_: mp4io.Tag(uint32(mp4io.ESDS)),
+	}
+}

pkg/mp4/consumer.go

@@ -2,7 +2,7 @@ package mp4
 
 import (
 	"encoding/json"
-	"fmt"
+	"github.com/AlexxIT/go2rtc/pkg/aac"
 	"github.com/AlexxIT/go2rtc/pkg/h264"
 	"github.com/AlexxIT/go2rtc/pkg/h265"
 	"github.com/AlexxIT/go2rtc/pkg/streamer"
@@ -28,44 +28,37 @@ func (c *Consumer) GetMedias() []*streamer.Media {
 			Kind:      streamer.KindVideo,
 			Direction: streamer.DirectionRecvonly,
 			Codecs: []*streamer.Codec{
-				{Name: streamer.CodecH264, ClockRate: 90000},
+				{Name: streamer.CodecH264},
-				{Name: streamer.CodecH265, ClockRate: 90000},
+				{Name: streamer.CodecH265},
+			},
+		},
+		{
+			Kind:      streamer.KindAudio,
+			Direction: streamer.DirectionRecvonly,
+			Codecs: []*streamer.Codec{
+				{Name: streamer.CodecAAC},
 			},
 		},
-		//{
-		//	Kind:      streamer.KindAudio,
-		//	Direction: streamer.DirectionRecvonly,
-		//	Codecs: []*streamer.Codec{
-		//		{Name: streamer.CodecAAC, ClockRate: 16000},
-		//	},
-		//},
 	}
 }
 
 func (c *Consumer) AddTrack(media *streamer.Media, track *streamer.Track) *streamer.Track {
+	trackID := byte(len(c.codecs))
+	c.codecs = append(c.codecs, track.Codec)
+
 	codec := track.Codec
 	switch codec.Name {
 	case streamer.CodecH264:
-		c.codecs = append(c.codecs, track.Codec)
-
 		push := func(packet *rtp.Packet) error {
 			if packet.Version != h264.RTPPacketVersionAVC {
 				return nil
 			}
 
-			if c.muxer == nil {
+			if !c.start {
 				return nil
 			}
 
-			if !c.start {
+			buf := c.muxer.Marshal(trackID, packet)
-				if h264.IsKeyframe(packet.Payload) {
-					c.start = true
-				} else {
-					return nil
-				}
-			}
-
-			buf := c.muxer.Marshal(packet)
 			c.send += len(buf)
 			c.Fire(buf)
 
@@ -73,7 +66,7 @@ func (c *Consumer) AddTrack(media *streamer.Media, track *streamer.Track) *strea
 		}
 
 		var wrapper streamer.WrapperFunc
-		if h264.IsAVC(codec) {
+		if codec.IsMP4() {
 			wrapper = h264.RepairAVC(track)
 		} else {
 			wrapper = h264.RTPDepay(track)
@@ -83,39 +76,51 @@ func (c *Consumer) AddTrack(media *streamer.Media, track *streamer.Track) *strea
 		return track.Bind(push)
 
 	case streamer.CodecH265:
-		c.codecs = append(c.codecs, track.Codec)
-
 		push := func(packet *rtp.Packet) error {
 			if packet.Version != h264.RTPPacketVersionAVC {
 				return nil
 			}
 
 			if !c.start {
-				if h265.IsKeyframe(packet.Payload) {
+				return nil
-					c.start = true
-				} else {
-					return nil
-				}
 			}
 
-			buf := c.muxer.Marshal(packet)
+			buf := c.muxer.Marshal(trackID, packet)
 			c.send += len(buf)
 			c.Fire(buf)
 
 			return nil
 		}
 
-		if !h264.IsAVC(codec) {
+		if !codec.IsMP4() {
 			wrapper := h265.RTPDepay(track)
 			push = wrapper(push)
 		}
 
+		return track.Bind(push)
+
+	case streamer.CodecAAC:
+		push := func(packet *rtp.Packet) error {
+			if !c.start {
+				return nil
+			}
+
+			buf := c.muxer.Marshal(trackID, packet)
+			c.send += len(buf)
+			c.Fire(buf)
+
+			return nil
+		}
+
+		if !codec.IsMP4() {
+			wrapper := aac.RTPDepay(track)
+			push = wrapper(push)
+		}
+
 		return track.Bind(push)
 	}
 
-	fmt.Printf("[rtmp] unsupported codec: %+v\n", track.Codec)
+	panic("unsupported codec")
-
-	return nil
 }
 
 func (c *Consumer) MimeType() string {
@@ -123,12 +128,14 @@ func (c *Consumer) MimeType() string {
 }
 
 func (c *Consumer) Init() ([]byte, error) {
-	if c.muxer == nil {
+	c.muxer = &Muxer{}
-		c.muxer = &Muxer{}
-	}
 	return c.muxer.GetInit(c.codecs)
 }
 
+func (c *Consumer) Start() {
+	c.start = true
+}
+
 //
 
 func (c *Consumer) MarshalJSON() ([]byte, error) {

pkg/mp4/keyframe.go

@@ -0,0 +1,85 @@
+package mp4
+
+import (
+	"github.com/AlexxIT/go2rtc/pkg/h264"
+	"github.com/AlexxIT/go2rtc/pkg/h265"
+	"github.com/AlexxIT/go2rtc/pkg/streamer"
+	"github.com/pion/rtp"
+)
+
+type Keyframe struct {
+	streamer.Element
+
+	MimeType string
+}
+
+func (c *Keyframe) GetMedias() []*streamer.Media {
+	return []*streamer.Media{
+		{
+			Kind:      streamer.KindVideo,
+			Direction: streamer.DirectionRecvonly,
+			Codecs: []*streamer.Codec{
+				{Name: streamer.CodecH264},
+				{Name: streamer.CodecH265},
+			},
+		},
+	}
+}
+
+func (c *Keyframe) AddTrack(media *streamer.Media, track *streamer.Track) *streamer.Track {
+	muxer := &Muxer{}
+
+	codecs := []*streamer.Codec{track.Codec}
+
+	init, err := muxer.GetInit(codecs)
+	if err != nil {
+		return nil
+	}
+
+	c.MimeType = muxer.MimeType(codecs)
+
+	switch track.Codec.Name {
+	case streamer.CodecH264:
+		push := func(packet *rtp.Packet) error {
+			if !h264.IsKeyframe(packet.Payload) {
+				return nil
+			}
+
+			buf := muxer.Marshal(0, packet)
+			c.Fire(append(init, buf...))
+
+			return nil
+		}
+
+		var wrapper streamer.WrapperFunc
+		if track.Codec.IsMP4() {
+			wrapper = h264.RepairAVC(track)
+		} else {
+			wrapper = h264.RTPDepay(track)
+		}
+		push = wrapper(push)
+
+		return track.Bind(push)
+
+	case streamer.CodecH265:
+		push := func(packet *rtp.Packet) error {
+			if !h265.IsKeyframe(packet.Payload) {
+				return nil
+			}
+
+			buf := muxer.Marshal(0, packet)
+			c.Fire(append(init, buf...))
+
+			return nil
+		}
+
+		if !track.Codec.IsMP4() {
+			wrapper := h265.RTPDepay(track)
+			push = wrapper(push)
+		}
+
+		return track.Bind(push)
+	}
+
+	panic("unsupported codec")
+}

pkg/mp4/muxer.go

@@ -2,10 +2,12 @@ package mp4
 
 import (
 	"encoding/binary"
+	"encoding/hex"
 	"fmt"
 	"github.com/AlexxIT/go2rtc/pkg/h264"
 	"github.com/AlexxIT/go2rtc/pkg/h265"
 	"github.com/AlexxIT/go2rtc/pkg/streamer"
+	"github.com/deepch/vdk/av"
 	"github.com/deepch/vdk/codec/h264parser"
 	"github.com/deepch/vdk/codec/h265parser"
 	"github.com/deepch/vdk/format/fmp4/fmp4io"
@@ -16,22 +18,28 @@ import (
 
 type Muxer struct {
 	fragIndex uint32
-	dts       uint64
+	dts       []uint64
-	pts       uint32
+	pts       []uint32
-	data      []byte
+	//data      []byte
-	total     int
+	//total     int
 }
 
 func (m *Muxer) MimeType(codecs []*streamer.Codec) string {
 	s := `video/mp4; codecs="`
 
-	for _, codec := range codecs {
+	for i, codec := range codecs {
+		if i > 0 {
+			s += ","
+		}
+
 		switch codec.Name {
 		case streamer.CodecH264:
 			s += "avc1." + h264.GetProfileLevelID(codec.FmtpLine)
 		case streamer.CodecH265:
 			// +Safari +Chrome +Edge -iOS15 -Android13
 			s += "hvc1.1.6.L93.B0" // hev1.1.6.L93.B0
+		case streamer.CodecAAC:
+			s += "mp4a.40.2"
 		}
 	}
 
@@ -41,7 +49,7 @@ func (m *Muxer) MimeType(codecs []*streamer.Codec) string {
 func (m *Muxer) GetInit(codecs []*streamer.Codec) ([]byte, error) {
 	moov := MOOV()
 
-	for _, codec := range codecs {
+	for i, codec := range codecs {
 		switch codec.Name {
 		case streamer.CodecH264:
 			sps, pps := h264.GetParameterSet(codec.FmtpLine)
@@ -59,11 +67,14 @@ func (m *Muxer) GetInit(codecs []*streamer.Codec) ([]byte, error) {
 			width := codecData.Width()
 			height := codecData.Height()
 
-			trak := TRAK()
+			trak := TRAK(i + 1)
-			trak.Media.Header.TimeScale = int32(codec.ClockRate)
 			trak.Header.TrackWidth = float64(width)
 			trak.Header.TrackHeight = float64(height)
-
+			trak.Media.Header.TimeScale = int32(codec.ClockRate)
+			trak.Media.Handler = &mp4io.HandlerRefer{
+				SubType: [4]byte{'v', 'i', 'd', 'e'},
+				Name:    []byte{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 'm', 'a', 'i', 'n', 0},
+			}
 			trak.Media.Info.Video = &mp4io.VideoMediaInfo{
 				Flags: 0x000001,
 			}
@@ -81,11 +92,6 @@ func (m *Muxer) GetInit(codecs []*streamer.Codec) ([]byte, error) {
 				},
 			}
 
-			trak.Media.Handler = &mp4io.HandlerRefer{
-				SubType: [4]byte{'v', 'i', 'd', 'e'},
-				Name:    []byte{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 'm', 'a', 'i', 'n', 0},
-			}
-
 			moov.Tracks = append(moov.Tracks, trak)
 
 		case streamer.CodecH265:
@@ -102,11 +108,14 @@ func (m *Muxer) GetInit(codecs []*streamer.Codec) ([]byte, error) {
 			width := codecData.Width()
 			height := codecData.Height()
 
-			trak := TRAK()
+			trak := TRAK(i + 1)
-			trak.Media.Header.TimeScale = int32(codec.ClockRate)
 			trak.Header.TrackWidth = float64(width)
 			trak.Header.TrackHeight = float64(height)
-
+			trak.Media.Header.TimeScale = int32(codec.ClockRate)
+			trak.Media.Handler = &mp4io.HandlerRefer{
+				SubType: [4]byte{'v', 'i', 'd', 'e'},
+				Name:    []byte{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 'm', 'a', 'i', 'n', 0},
+			}
 			trak.Media.Info.Video = &mp4io.VideoMediaInfo{
 				Flags: 0x000001,
 			}
@@ -124,13 +133,47 @@ func (m *Muxer) GetInit(codecs []*streamer.Codec) ([]byte, error) {
 				},
 			}
 
+			moov.Tracks = append(moov.Tracks, trak)
+
+		case streamer.CodecAAC:
+			s := streamer.Between(codec.FmtpLine, "config=", ";")
+			b, err := hex.DecodeString(s)
+			if err != nil {
+				return nil, err
+			}
+
+			trak := TRAK(i + 1)
+			trak.Header.AlternateGroup = 1
+			trak.Header.Duration = 0
+			trak.Header.Volume = 1
+			trak.Media.Header.TimeScale = int32(codec.ClockRate)
+
 			trak.Media.Handler = &mp4io.HandlerRefer{
-				SubType: [4]byte{'v', 'i', 'd', 'e'},
+				SubType: [4]byte{'s', 'o', 'u', 'n'},
 				Name:    []byte{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 'm', 'a', 'i', 'n', 0},
 			}
+			trak.Media.Info.Sound = &mp4io.SoundMediaInfo{}
+
+			trak.Media.Info.Sample.SampleDesc.MP4ADesc = &mp4io.MP4ADesc{
+				DataRefIdx:       1,
+				NumberOfChannels: int16(codec.Channels),
+				SampleSize:       int16(av.FLTP.BytesPerSample() * 4),
+				SampleRate:       float64(codec.ClockRate),
+				Unknowns:         []mp4io.Atom{ESDS(b)},
+			}
 
 			moov.Tracks = append(moov.Tracks, trak)
 		}
+
+		trex := &mp4io.TrackExtend{
+			TrackId:               uint32(i + 1),
+			DefaultSampleDescIdx:  1,
+			DefaultSampleDuration: 0,
+		}
+		moov.MovieExtend.Tracks = append(moov.MovieExtend.Tracks, trex)
+
+		m.pts = append(m.pts, 0)
+		m.dts = append(m.dts, 0)
 	}
 
 	data := make([]byte, moov.Len())
@@ -139,14 +182,12 @@ func (m *Muxer) GetInit(codecs []*streamer.Codec) ([]byte, error) {
 	return append(FTYP(), data...), nil
 }
 
-func (m *Muxer) Rewind() {
+//func (m *Muxer) Rewind() {
-	m.dts = 0
+//	m.dts = 0
-	m.pts = 0
+//	m.pts = 0
-}
+//}
-
-func (m *Muxer) Marshal(packet *rtp.Packet) []byte {
-	trackID := uint8(1)
 
+func (m *Muxer) Marshal(trackID byte, packet *rtp.Packet) []byte {
 	run := &mp4fio.TrackFragRun{
 		Flags:            0x000b05,
 		FirstSampleFlags: uint32(fmp4io.SampleNoDependencies),
@@ -161,12 +202,12 @@ func (m *Muxer) Marshal(packet *rtp.Packet) []byte {
 		Tracks: []*mp4fio.TrackFrag{
 			{
 				Header: &mp4fio.TrackFragHeader{
-					Data: []byte{0x00, 0x02, 0x00, 0x20, 0x00, 0x00, 0x00, trackID, 0x01, 0x01, 0x00, 0x00},
+					Data: []byte{0x00, 0x02, 0x00, 0x20, 0x00, 0x00, 0x00, trackID + 1, 0x01, 0x01, 0x00, 0x00},
 				},
 				DecodeTime: &mp4fio.TrackFragDecodeTime{
 					Version: 1,
 					Flags:   0,
-					Time:    m.dts,
+					Time:    m.dts[trackID],
 				},
 				Run: run,
 			},
@@ -179,12 +220,12 @@ func (m *Muxer) Marshal(packet *rtp.Packet) []byte {
 	}
 
 	newTime := packet.Timestamp
-	if m.pts > 0 {
+	if m.pts[trackID] > 0 {
 		//m.dts += uint64(newTime - m.pts)
-		entry.Duration = newTime - m.pts
+		entry.Duration = newTime - m.pts[trackID]
-		m.dts += uint64(entry.Duration)
+		m.dts[trackID] += uint64(entry.Duration)
 	}
-	m.pts = newTime
+	m.pts[trackID] = newTime
 
 	// important before moof.Len()
 	run.Entries = append(run.Entries, entry)
@@ -204,7 +245,7 @@ func (m *Muxer) Marshal(packet *rtp.Packet) []byte {
 
 	m.fragIndex++
 
-	m.total += moofLen + mdatLen
+	//m.total += moofLen + mdatLen
 
 	return buf
 }

pkg/mp4f/consumer.go

@@ -0,0 +1,164 @@
+package mp4f
+
+import (
+	"encoding/json"
+	"github.com/AlexxIT/go2rtc/pkg/h264"
+	"github.com/AlexxIT/go2rtc/pkg/streamer"
+	"github.com/deepch/vdk/av"
+	"github.com/deepch/vdk/codec/aacparser"
+	"github.com/deepch/vdk/codec/h264parser"
+	"github.com/deepch/vdk/format/mp4f"
+	"github.com/pion/rtp"
+	"time"
+)
+
+type Consumer struct {
+	streamer.Element
+
+	UserAgent  string
+	RemoteAddr string
+
+	muxer    *mp4f.Muxer
+	streams  []av.CodecData
+	mimeType string
+	start    bool
+
+	send int
+}
+
+func (c *Consumer) GetMedias() []*streamer.Media {
+	return []*streamer.Media{
+		{
+			Kind:      streamer.KindVideo,
+			Direction: streamer.DirectionRecvonly,
+			Codecs: []*streamer.Codec{
+				{Name: streamer.CodecH264, ClockRate: 90000},
+			},
+		},
+		{
+			Kind:      streamer.KindAudio,
+			Direction: streamer.DirectionRecvonly,
+			Codecs: []*streamer.Codec{
+				{Name: streamer.CodecAAC, ClockRate: 16000},
+			},
+		},
+	}
+}
+
+func (c *Consumer) AddTrack(media *streamer.Media, track *streamer.Track) *streamer.Track {
+	codec := track.Codec
+	trackID := int8(len(c.streams))
+
+	switch codec.Name {
+	case streamer.CodecH264:
+		sps, pps := h264.GetParameterSet(codec.FmtpLine)
+		stream, err := h264parser.NewCodecDataFromSPSAndPPS(sps, pps)
+		if err != nil {
+			return nil
+		}
+
+		c.mimeType += "avc1." + h264.GetProfileLevelID(codec.FmtpLine)
+		c.streams = append(c.streams, stream)
+
+		pkt := av.Packet{Idx: trackID, CompositionTime: time.Millisecond}
+
+		ts2time := time.Second / time.Duration(codec.ClockRate)
+
+		push := func(packet *rtp.Packet) error {
+			if packet.Version != h264.RTPPacketVersionAVC {
+				return nil
+			}
+
+			if !c.start {
+				return nil
+			}
+
+			pkt.Data = packet.Payload
+			newTime := time.Duration(packet.Timestamp) * ts2time
+			if pkt.Time > 0 {
+				pkt.Duration = newTime - pkt.Time
+			}
+			pkt.Time = newTime
+
+			ready, buf, _ := c.muxer.WritePacket(pkt, false)
+			if ready {
+				c.send += len(buf)
+				c.Fire(buf)
+			}
+
+			return nil
+		}
+
+		if !codec.IsMP4() {
+			wrapper := h264.RTPDepay(track)
+			push = wrapper(push)
+		}
+
+		return track.Bind(push)
+
+	case streamer.CodecAAC:
+		stream, _ := aacparser.NewCodecDataFromMPEG4AudioConfigBytes([]byte{20, 8})
+
+		c.mimeType += ",mp4a.40.2"
+		c.streams = append(c.streams, stream)
+
+		pkt := av.Packet{Idx: trackID, CompositionTime: time.Millisecond}
+
+		ts2time := time.Second / time.Duration(codec.ClockRate)
+
+		push := func(packet *rtp.Packet) error {
+			if !c.start {
+				return nil
+			}
+
+			pkt.Data = packet.Payload
+			newTime := time.Duration(packet.Timestamp) * ts2time
+			if pkt.Time > 0 {
+				pkt.Duration = newTime - pkt.Time
+			}
+			pkt.Time = newTime
+
+			ready, buf, _ := c.muxer.WritePacket(pkt, false)
+			if ready {
+				c.send += len(buf)
+				c.Fire(buf)
+			}
+
+			return nil
+		}
+
+		return track.Bind(push)
+	}
+
+	panic("unsupported codec")
+}
+
+func (c *Consumer) MimeType() string {
+	return `video/mp4; codecs="` + c.mimeType + `"`
+}
+
+func (c *Consumer) Init() ([]byte, error) {
+	c.muxer = mp4f.NewMuxer(nil)
+	if err := c.muxer.WriteHeader(c.streams); err != nil {
+		return nil, err
+	}
+	_, data := c.muxer.GetInit(c.streams)
+	return data, nil
+}
+
+func (c *Consumer) Start()  {
+	c.start = true
+}
+
+//
+
+func (c *Consumer) MarshalJSON() ([]byte, error) {
+	v := map[string]interface{}{
+		"type":        "MSE server consumer",
+		"send":        c.send,
+		"remote_addr": c.RemoteAddr,
+		"user_agent":  c.UserAgent,
+	}
+
+	return json.Marshal(v)
+}

pkg/rtmp/client.go

@@ -4,16 +4,24 @@ import (
 	"encoding/base64"
 	"encoding/hex"
 	"fmt"
-	"github.com/AlexxIT/go2rtc/pkg/h264"
+	"github.com/AlexxIT/go2rtc/pkg/httpflv"
 	"github.com/AlexxIT/go2rtc/pkg/streamer"
 	"github.com/deepch/vdk/av"
 	"github.com/deepch/vdk/codec/aacparser"
 	"github.com/deepch/vdk/codec/h264parser"
 	"github.com/deepch/vdk/format/rtmp"
 	"github.com/pion/rtp"
+	"strings"
 	"time"
 )
 
+// Conn for RTMP and RTMPT (flv over HTTP)
+type Conn interface {
+	Streams() (streams []av.CodecData, err error)
+	ReadPacket() (pkt av.Packet, err error)
+	Close() (err error)
+}
+
 type Client struct {
 	streamer.Element
 
@@ -22,7 +30,7 @@ type Client struct {
 	medias []*streamer.Media
 	tracks []*streamer.Track
 
-	conn   *rtmp.Conn
+	conn   Conn
 	closed bool
 
 	receive int
@@ -33,7 +41,12 @@ func NewClient(uri string) *Client {
 }
 
 func (c *Client) Dial() (err error) {
-	c.conn, err = rtmp.Dial(c.URI)
+	if strings.HasPrefix(c.URI, "http") {
+		c.conn, err = httpflv.Dial(c.URI)
+	} else {
+		c.conn, err = rtmp.Dial(c.URI)
+	}
+
 	if err != nil {
 		return
 	}
@@ -60,7 +73,7 @@ func (c *Client) Dial() (err error) {
 				Name:        streamer.CodecH264,
 				ClockRate:   90000,
 				FmtpLine:    fmtp,
-				PayloadType: h264.PayloadTypeAVC,
+				PayloadType: streamer.PayloadTypeMP4,
 			}
 
 			media := &streamer.Media{
@@ -79,17 +92,13 @@ func (c *Client) Dial() (err error) {
 			// TODO: fix support
 			cd := stream.(aacparser.CodecData)
 
-			// a=fmtp:97 streamtype=5;profile-level-id=1;mode=AAC-hbr;sizelength=13;indexlength=3;indexdeltalength=3;config=1588
-			fmtp := fmt.Sprintf(
-				"config=%s",
-				hex.EncodeToString(cd.ConfigBytes),
-			)
-
 			codec := &streamer.Codec{
 				Name:      streamer.CodecAAC,
 				ClockRate: uint32(cd.Config.SampleRate),
 				Channels:  uint16(cd.Config.ChannelConfig),
-				FmtpLine:  fmtp,
+				//  a=fmtp:97 streamtype=5;profile-level-id=1;mode=AAC-hbr;sizelength=13;indexlength=3;indexdeltalength=3;config=1588
+				FmtpLine:    "streamtype=5;profile-level-id=1;mode=AAC-hbr;sizelength=13;indexlength=3;indexdeltalength=3;config=" + hex.EncodeToString(cd.ConfigBytes),
+				PayloadType: streamer.PayloadTypeMP4,
 			}
 
 			media := &streamer.Media{

pkg/rtmp/streamer.go

@@ -32,7 +32,7 @@ func (c *Client) MarshalJSON() ([]byte, error) {
 	v := map[string]interface{}{
 		streamer.JSONReceive:    c.receive,
 		streamer.JSONType:       "RTMP client producer",
-		streamer.JSONRemoteAddr: c.conn.NetConn().RemoteAddr().String(),
+		//streamer.JSONRemoteAddr: c.conn.NetConn().RemoteAddr().String(),
 		"url":                   c.URI,
 	}
 	for i, media := range c.medias {

pkg/rtsp/conn.go

@@ -7,6 +7,7 @@ import (
 	"encoding/binary"
 	"errors"
 	"fmt"
+	"github.com/AlexxIT/go2rtc/pkg/aac"
 	"github.com/AlexxIT/go2rtc/pkg/h264"
 	"github.com/AlexxIT/go2rtc/pkg/streamer"
 	"github.com/AlexxIT/go2rtc/pkg/tcp"
@@ -43,7 +44,14 @@ const (
 	ModeServerConsumer
 )
 
-const KeepAlive = time.Second * 25
+type State byte
+
+const (
+	StateNone State = iota
+	StateConn
+	StateSetup
+	StatePlay
+)
 
 type Conn struct {
 	streamer.Element
@@ -62,6 +70,7 @@ type Conn struct {
 	auth     *tcp.Auth
 	conn     net.Conn
 	mode     Mode
+	state    State
 	reader   *bufio.Reader
 	sequence int
 	uri      string
@@ -108,16 +117,11 @@ func (c *Conn) parseURI() (err error) {
 }
 
 func (c *Conn) Dial() (err error) {
-	//if c.state != StateClientInit {
-	//	panic("wrong state")
-	//}
 	if c.conn != nil {
 		_ = c.parseURI()
 	}
 
-	c.conn, err = net.DialTimeout(
+	c.conn, err = net.DialTimeout("tcp", c.URL.Host, time.Second*5)
-		"tcp", c.URL.Host, 10*time.Second,
-	)
 	if err != nil {
 		return
 	}
@@ -139,6 +143,7 @@ func (c *Conn) Dial() (err error) {
 	}
 
 	c.reader = bufio.NewReader(c.conn)
+	c.state = StateConn
 
 	return nil
 }
@@ -362,21 +367,25 @@ func (c *Conn) SetupMedia(
 	var res *tcp.Response
 	res, err = c.Do(req)
 	if err != nil {
-		// Dahua VTO2111D fail on this step because of backchannel
+		// some Dahua/Amcrest cameras fail here because two simultaneous
+		// backchannel connections
 		if c.Backchannel {
-			if err = c.Dial(); err != nil {
-				return nil, err
-			}
 			c.Backchannel = false
-			if err = c.Describe(); err != nil {
+			if err := c.Dial(); err != nil {
 				return nil, err
 			}
-			res, err = c.Do(req)
+			if err := c.Describe(); err != nil {
+				return nil, err
+			}
+
+			for _, newMedia := range c.Medias {
+				if newMedia.Control == media.Control {
+					return c.SetupMedia(newMedia, newMedia.Codecs[0])
+				}
+			}
 		}
 
-		if err != nil {
+		return nil, err
-			return nil, err
-		}
 	}
 
 	if c.Session == "" {
@@ -435,44 +444,41 @@ func (c *Conn) SetupMedia(
 		track = c.bindTrack(track, byte(ch), codec.PayloadType)
 	}
 
+	c.state = StateSetup
 	c.tracks = append(c.tracks, track)
 
 	return track, nil
 }
 
 func (c *Conn) Play() (err error) {
+	if c.state != StateSetup {
+		return fmt.Errorf("RTSP PLAY from wrong state: %s", c.state)
+	}
+
 	req := &tcp.Request{Method: MethodPlay, URL: c.URL}
 	return c.Request(req)
 }
 
 func (c *Conn) Teardown() (err error) {
-	//if c.state != StateClientPlay {
+	// allow TEARDOWN from any state (ex. ANNOUNCE > SETUP)
-	//	panic("wrong state")
-	//}
-
 	req := &tcp.Request{Method: MethodTeardown, URL: c.URL}
 	return c.Request(req)
 }
 
 func (c *Conn) Close() error {
-	if c.conn == nil {
+	if c.state == StateNone {
 		return nil
 	}
 	if err := c.Teardown(); err != nil {
 		return err
 	}
-	conn := c.conn
+	c.state = StateNone
-	c.conn = nil
+	return c.conn.Close()
-	return conn.Close()
 }
 
 const transport = "RTP/AVP/TCP;unicast;interleaved="
 
 func (c *Conn) Accept() error {
-	//if c.state != StateServerInit {
-	//	panic("wrong state")
-	//}
-
 	for {
 		req, err := tcp.ReadRequest(c.reader)
 		if err != nil {
@@ -575,8 +581,9 @@ func (c *Conn) Accept() error {
 				Request: req,
 			}
 
-			if tr[:len(transport)] == transport {
+			if strings.HasPrefix(tr, transport) {
 				c.Session = "1" // TODO: fixme
+				c.state = StateSetup
 				res.Header.Set("Transport", tr[:len(transport)+3])
 			} else {
 				res.Status = "461 Unsupported transport"
@@ -597,17 +604,53 @@ func (c *Conn) Accept() error {
 }
 
 func (c *Conn) Handle() (err error) {
+	if c.state != StateSetup {
+		return fmt.Errorf("RTSP Handle from wrong state: %d", c.state)
+	}
+
+	c.state = StatePlay
+
 	defer func() {
-		if c.conn == nil {
+		if c.state == StateNone {
 			err = nil
+			return
 		}
-		//c.Fire(streamer.StateNull)
+
+		// may have gotten here because of the deadline
+		// so close the connection to stop keepalive
+		c.state = StateNone
+		_ = c.conn.Close()
 	}()
 
-	//c.Fire(streamer.StatePlaying)
+	var timeout time.Duration
-	ts := time.Now().Add(KeepAlive)
+
+	switch c.mode {
+	case ModeClientProducer:
+		// polling frames from remote RTSP Server (ex Camera)
+		timeout = time.Second * 5
+		go c.keepalive()
+
+	case ModeServerProducer:
+		// polling frames from remote RTSP Client (ex FFmpeg)
+		timeout = time.Second * 15
+
+	case ModeServerConsumer:
+		// pushing frames to remote RTSP Client (ex VLC)
+		timeout = time.Second * 60
+
+	default:
+		return fmt.Errorf("wrong RTSP conn mode: %d", c.mode)
+	}
 
 	for {
+		if c.state == StateNone {
+			return
+		}
+
+		if err = c.conn.SetReadDeadline(time.Now().Add(timeout)); err != nil {
+			return
+		}
+
 		// we can read:
 		// 1. RTP interleaved: `$` + 1B channel number + 2B size
 		// 2. RTSP response:   RTSP/1.0 200 OK
@@ -619,22 +662,21 @@ func (c *Conn) Handle() (err error) {
 		}
 
 		if buf4[0] != '$' {
-			if string(buf4) == "RTSP" {
+			switch string(buf4) {
+			case "RTSP":
 				var res *tcp.Response
-				res, err = tcp.ReadResponse(c.reader)
+				if res, err = tcp.ReadResponse(c.reader); err != nil {
-				if err != nil {
 					return
 				}
-
 				c.Fire(res)
-			} else {
+			case "OPTI", "TEAR", "DESC", "SETU", "PLAY", "PAUS", "RECO", "ANNO", "GET_", "SET_":
 				var req *tcp.Request
-				req, err = tcp.ReadRequest(c.reader)
+				if req, err = tcp.ReadRequest(c.reader); err != nil {
-				if err != nil {
 					return
 				}
-
 				c.Fire(req)
+			default:
+				return fmt.Errorf("RTSP wrong input")
 			}
 			continue
 		}
@@ -685,16 +727,19 @@ func (c *Conn) Handle() (err error) {
 
 			c.Fire(msg)
 		}
+	}
+}
 
-		// keep-alive
+func (c *Conn) keepalive() {
-		now := time.Now()
+	// TODO: rewrite to RTCP
-		if now.After(ts) {
+	req := &tcp.Request{Method: MethodOptions, URL: c.URL}
-			req := &tcp.Request{Method: MethodOptions, URL: c.URL}
+	for {
-			// don't need to wait respose on this request
+		time.Sleep(time.Second * 25)
-			if err = c.Request(req); err != nil {
+		if c.state == StateNone {
-				return err
+			return
-			}
+		}
-			ts = now.Add(KeepAlive)
+		if err := c.Request(req); err != nil {
+			return
 		}
 	}
 }
@@ -712,20 +757,16 @@ func (c *Conn) bindTrack(
 	track *streamer.Track, channel uint8, payloadType uint8,
 ) *streamer.Track {
 	push := func(packet *rtp.Packet) error {
-		if c.conn == nil {
+		if c.state == StateNone {
 			return nil
 		}
 		packet.Header.PayloadType = payloadType
-		//packet.Header.PayloadType = 100
-		//packet.Header.PayloadType = 8
-		//packet.Header.PayloadType = 106
 
 		size := packet.MarshalSize()
 
 		data := make([]byte, 4+size)
 		data[0] = '$'
 		data[1] = channel
-		//data[1] = 10
 		binary.BigEndian.PutUint16(data[2:], uint16(size))
 
 		if _, err := packet.MarshalTo(data[4:]); err != nil {
@@ -741,9 +782,15 @@ func (c *Conn) bindTrack(
 		return nil
 	}
 
-	if h264.IsAVC(track.Codec) {
+	if track.Codec.IsMP4() {
-		wrapper := h264.RTPPay(1500)
+		switch track.Codec.Name {
-		push = wrapper(push)
+		case streamer.CodecH264:
+			wrapper := h264.RTPPay(1500)
+			push = wrapper(push)
+		case streamer.CodecAAC:
+			wrapper := aac.RTPPay(1500)
+			push = wrapper(push)
+		}
 	}
 
 	return track.Bind(push)

pkg/rtsp/streamer.go

@@ -2,6 +2,7 @@ package rtsp
 
 import (
 	"encoding/json"
+	"fmt"
 	"github.com/AlexxIT/go2rtc/pkg/streamer"
 	"strconv"
 )
@@ -19,6 +20,11 @@ func (c *Conn) GetTrack(media *streamer.Media, codec *streamer.Codec) *streamer.
 		}
 	}
 
+	// can't setup new tracks from play state
+	if c.state == StatePlay {
+		return nil
+	}
+
 	track, err := c.SetupMedia(media, codec)
 	if err != nil {
 		return nil
@@ -27,13 +33,16 @@ func (c *Conn) GetTrack(media *streamer.Media, codec *streamer.Codec) *streamer.
 }
 
 func (c *Conn) Start() error {
-	if c.mode == ModeServerProducer {
+	switch c.mode {
-		return nil
+	case ModeClientProducer:
+		if err := c.Play(); err != nil {
+			return err
+		}
+	case ModeServerProducer:
+	default:
+		return fmt.Errorf("start wrong mode: %d", c.mode)
 	}
 
-	if err := c.Play(); err != nil {
-		return err
-	}
 	return c.Handle()
 }
 

pkg/srtp/server.go

@@ -8,9 +8,19 @@ import (
 // Server using same UDP port for SRTP and for SRTCP as the iPhone does
 // this is not really necessary but anyway
 type Server struct {
+	conn     net.PacketConn
 	sessions map[uint32]*Session
 }
 
+func (s *Server) Port() uint16 {
+	addr := s.conn.LocalAddr().(*net.UDPAddr)
+	return uint16(addr.Port)
+}
+
+func (s *Server) Close() error {
+	return s.conn.Close()
+}
+
 func (s *Server) AddSession(session *Session) {
 	if s.sessions == nil {
 		s.sessions = map[uint32]*Session{}
@@ -23,6 +33,8 @@ func (s *Server) RemoveSession(session *Session) {
 }
 
 func (s *Server) Serve(conn net.PacketConn) error {
+	s.conn = conn
+
 	buf := make([]byte, 2048)
 	for {
 		n, addr, err := conn.ReadFrom(buf)

pkg/srtp/session.go

@@ -5,6 +5,7 @@ import (
 	"github.com/pion/rtcp"
 	"github.com/pion/rtp"
 	"github.com/pion/srtp/v2"
+	"time"
 )
 
 type Session struct {
@@ -16,6 +17,14 @@ type Session struct {
 
 	Write func(b []byte) (int, error)
 	Track *streamer.Track
+
+	lastSequence  uint32
+	lastTimestamp uint32
+	//lastPacket    *rtp.Packet
+	lastTime time.Time
+	jitter   float64
+	//sequenceCycle uint16
+	totalLost uint32
 }
 
 func (s *Session) SetKeys(
@@ -37,13 +46,42 @@ func (s *Session) HandleRTP(data []byte) (err error) {
 		return
 	}
 
+	if s.Track == nil {
+		return
+	}
+
 	packet := &rtp.Packet{}
 	if err = packet.Unmarshal(data); err != nil {
 		return
 	}
 
+	now := time.Now()
+
+	// https://www.ietf.org/rfc/rfc3550.txt
+	if s.lastTimestamp != 0 {
+		delta := packet.SequenceNumber - uint16(s.lastSequence)
+
+		// lost packet
+		if delta > 1 {
+			s.totalLost += uint32(delta - 1)
+		}
+
+		// D(i,j) = (Rj - Ri) - (Sj - Si) = (Rj - Sj) - (Ri - Si)
+		dTime := now.Sub(s.lastTime).Seconds()*float64(s.Track.Codec.ClockRate) -
+			float64(packet.Timestamp-s.lastTimestamp)
+		if dTime < 0 {
+			dTime = -dTime
+		}
+		// J(i) = J(i-1) + (|D(i-1,i)| - J(i-1))/16
+		s.jitter += (dTime - s.jitter) / 16
+	}
+
+	// keeping cycles (overflow)
+	s.lastSequence = s.lastSequence&0xFFFF0000 | uint32(packet.SequenceNumber)
+	s.lastTimestamp = packet.Timestamp
+	s.lastTime = now
+
 	_ = s.Track.WriteRTP(packet)
-	//s.Output(core.RTP{Channel: s.Channel, Packet: packet})
 
 	return
 }
@@ -60,7 +98,6 @@ func (s *Session) HandleRTCP(data []byte) (err error) {
 	}
 
 	_ = packets
-	//s.Output(core.RTCP{Channel: s.Channel + 1, Header: header, Packets: packets})
 
 	if header.Type == rtcp.TypeSenderReport {
 		err = s.KeepAlive()
@@ -70,9 +107,25 @@ func (s *Session) HandleRTCP(data []byte) (err error) {
 }
 
 func (s *Session) KeepAlive() (err error) {
-	var data []byte
-	// we can send empty receiver response, but should send it to hold the connection
 	rep := rtcp.ReceiverReport{SSRC: s.LocalSSRC}
+
+	if s.lastTimestamp > 0 {
+		//log.Printf("[RTCP] ssrc=%d seq=%d lost=%d jit=%.2f", s.RemoteSSRC, s.lastSequence, s.totalLost, s.jitter)
+
+		rep.Reports = []rtcp.ReceptionReport{{
+			SSRC:               s.RemoteSSRC,
+			LastSequenceNumber: s.lastSequence,
+			LastSenderReport:   s.lastTimestamp,
+			FractionLost:       0, // TODO
+			TotalLost:          s.totalLost,
+			Delay:              0, // send just after receive
+			Jitter:             uint32(s.jitter),
+		}}
+	}
+
+	// we can send empty receiver response, but should send it to hold the connection
+
+	var data []byte
 	if data, err = rep.Marshal(); err != nil {
 		return
 	}
@@ -90,8 +143,8 @@ func GuessProfile(masterKey []byte) srtp.ProtectionProfile {
 	switch len(masterKey) {
 	case 16:
 		return srtp.ProtectionProfileAes128CmHmacSha1_80
-	//case 32:
+		//case 32:
-	//	return srtp.ProtectionProfileAes256CmHmacSha1_80
+		//	return srtp.ProtectionProfileAes256CmHmacSha1_80
 	}
 	return 0
 }

pkg/streamer/media.go

@@ -33,13 +33,17 @@ const (
 	CodecOpus = "OPUS" // payloadType: 111
 	CodecG722 = "G722"
 	CodecMPA  = "MPA" // payload: 14
+
+	CodecELD = "ELD" // AAC-ELD
 )
 
+const PayloadTypeMP4 byte = 255
+
 func GetKind(name string) string {
 	switch name {
 	case CodecH264, CodecH265, CodecVP8, CodecVP9, CodecAV1, CodecJPEG:
 		return KindVideo
-	case CodecPCMU, CodecPCMA, CodecAAC, CodecOpus, CodecG722, CodecMPA:
+	case CodecPCMU, CodecPCMA, CodecAAC, CodecOpus, CodecG722, CodecMPA, CodecELD:
 		return KindAudio
 	}
 	return ""
@@ -75,13 +79,13 @@ func (m *Media) AV() bool {
 	return m.Kind == KindVideo || m.Kind == KindAudio
 }
 
-func (m *Media) MatchCodec(codec *Codec) bool {
+func (m *Media) MatchCodec(codec *Codec) *Codec {
 	for _, c := range m.Codecs {
 		if c.Match(codec) {
-			return true
+			return c
 		}
 	}
-	return false
+	return nil
 }
 
 func (m *Media) MatchMedia(media *Media) *Codec {
@@ -127,22 +131,6 @@ type Codec struct {
 	PayloadType uint8
 }
 
-func NewCodec(name string) *Codec {
-	name = strings.ToUpper(name)
-	switch name {
-	case CodecH264, CodecH265, CodecVP8, CodecVP9, CodecAV1, CodecJPEG:
-		return &Codec{Name: name, ClockRate: 90000}
-	case CodecPCMU, CodecPCMA:
-		return &Codec{Name: name, ClockRate: 8000}
-	case CodecOpus:
-		return &Codec{Name: name, ClockRate: 48000, Channels: 2}
-	case "MJPEG":
-		return &Codec{Name: CodecJPEG, ClockRate: 90000}
-	}
-
-	panic(fmt.Sprintf("unsupported codec: %s", name))
-}
-
 func (c *Codec) String() string {
 	s := fmt.Sprintf("%d %s/%d", c.PayloadType, c.Name, c.ClockRate)
 	if c.Channels > 0 {
@@ -151,6 +139,10 @@ func (c *Codec) String() string {
 	return s
 }
 
+func (c *Codec) IsMP4() bool {
+	return c.PayloadType == PayloadTypeMP4
+}
+
 func (c *Codec) Clone() *Codec {
 	clone := *c
 	return &clone
@@ -197,13 +189,19 @@ func MarshalSDP(medias []*Media) ([]byte, error) {
 		}
 
 		codec := media.Codecs[0]
+
+		name := codec.Name
+		if name == CodecELD {
+			name = CodecAAC
+		}
+
 		md := &sdp.MediaDescription{
 			MediaName: sdp.MediaName{
 				Media:  media.Kind,
 				Protos: []string{"RTP", "AVP"},
 			},
 		}
-		md.WithCodec(payloadType, codec.Name, codec.ClockRate, codec.Channels, codec.FmtpLine)
+		md.WithCodec(payloadType, name, codec.ClockRate, codec.Channels, codec.FmtpLine)
 
 		sd.MediaDescriptions = append(sd.MediaDescriptions, md)
 

pkg/streamer/track.go

@@ -12,44 +12,54 @@ type WrapperFunc func(push WriterFunc) WriterFunc
 type Track struct {
 	Codec     *Codec
 	Direction string
-	Sink      map[*Track]WriterFunc
+	sink      map[*Track]WriterFunc
-	mx        sync.Mutex
+	sinkMu    sync.RWMutex
 }
 
 func (t *Track) String() string {
 	s := t.Codec.String()
-	s += fmt.Sprintf(", sinks=%d", len(t.Sink))
+	s += fmt.Sprintf(", sinks=%d", len(t.sink))
 	return s
 }
 
 func (t *Track) WriteRTP(p *rtp.Packet) error {
-	t.mx.Lock()
+	t.sinkMu.RLock()
-	for _, f := range t.Sink {
+	for _, f := range t.sink {
 		_ = f(p)
 	}
-	t.mx.Unlock()
+	t.sinkMu.RUnlock()
 	return nil
 }
 
 func (t *Track) Bind(w WriterFunc) *Track {
-	t.mx.Lock()
+	t.sinkMu.Lock()
 
-	if t.Sink == nil {
+	if t.sink == nil {
-		t.Sink = map[*Track]WriterFunc{}
+		t.sink = map[*Track]WriterFunc{}
 	}
 
 	clone := &Track{
-		Codec: t.Codec, Direction: t.Direction, Sink: t.Sink,
+		Codec: t.Codec, Direction: t.Direction, sink: t.sink,
 	}
-	t.Sink[clone] = w
+	t.sink[clone] = w
 
-	t.mx.Unlock()
+	t.sinkMu.Unlock()
 
 	return clone
 }
 
 func (t *Track) Unbind() {
-	t.mx.Lock()
+	t.sinkMu.Lock()
-	delete(t.Sink, t)
+	delete(t.sink, t)
-	t.mx.Unlock()
+	t.sinkMu.Unlock()
+}
+
+func (t *Track) GetSink(from *Track) {
+	t.sink = from.sink
+}
+
+func (t *Track) HasSink() bool {
+	t.sinkMu.RLock()
+	defer t.sinkMu.RUnlock()
+	return len(t.sink) > 0
 }

pkg/webrtc/conn.go

@@ -4,6 +4,7 @@ import (
 	"fmt"
 	"github.com/AlexxIT/go2rtc/pkg/streamer"
 	"github.com/pion/webrtc/v3"
+	"sort"
 )
 
 const (
@@ -100,6 +101,12 @@ func (c *Conn) SetOffer(offer string) (err error) {
 	}
 	rawSDP := []byte(c.Conn.RemoteDescription().SDP)
 	c.medias, err = streamer.UnmarshalSDP(rawSDP)
+
+	// sort medias, so video will always be before audio
+	sort.Slice(c.medias, func(i, j int) bool {
+		return c.medias[i].Kind == streamer.KindVideo
+	})
+
 	return
 }
 

pkg/webrtc/consumer.go

@@ -57,7 +57,7 @@ func (c *Conn) AddTrack(media *streamer.Media, track *streamer.Track) *streamer.
 			wrapper := h264.RTPPay(1200)
 			push = wrapper(push)
 
-			if h264.IsAVC(codec) {
+			if codec.IsMP4() {
 				wrapper = h264.RepairAVC(track)
 			} else {
 				wrapper = h264.RTPDepay(track)

pkg/webrtc/helper.go

@@ -9,6 +9,7 @@ import (
 	"net"
 	"strconv"
 	"strings"
+	"time"
 )
 
 func NewCandidate(address string) (string, error) {
@@ -38,7 +39,7 @@ func NewCandidate(address string) (string, error) {
 
 func LookupIP(address string) (string, error) {
 	if strings.HasPrefix(address, "stun:") {
-		ip, err := GetPublicIP()
+		ip, err := GetCachedPublicIP()
 		if err != nil {
 			return "", err
 		}
@@ -63,11 +64,20 @@ func LookupIP(address string) (string, error) {
 
 // GetPublicIP example from https://github.com/pion/stun
 func GetPublicIP() (net.IP, error) {
-	c, err := stun.Dial("udp", "stun.l.google.com:19302")
+	conn, err := net.Dial("udp", "stun.l.google.com:19302")
 	if err != nil {
 		return nil, err
 	}
 
+	c, err := stun.NewClient(conn)
+	if err != nil {
+		return nil, err
+	}
+
+	if err = conn.SetDeadline(time.Now().Add(time.Second * 3)); err != nil {
+		return nil, err
+	}
+
 	var res stun.Event
 
 	message := stun.MustBuild(stun.TransactionID, stun.BindingRequest)
@@ -90,6 +100,24 @@ func GetPublicIP() (net.IP, error) {
 	return xorAddr.IP, nil
 }
 
+var cachedIP net.IP
+var cachedTS time.Time
+
+func GetCachedPublicIP() (net.IP, error) {
+	now := time.Now()
+	if now.After(cachedTS) {
+		newIP, err := GetPublicIP()
+		if err == nil {
+			cachedIP = newIP
+			cachedTS = now.Add(time.Minute * 5)
+		} else if cachedIP == nil {
+			return nil, err
+		}
+	}
+
+	return cachedIP, nil
+}
+
 func IsIP(host string) bool {
 	for _, i := range host {
 		if i >= 'A' {

www/README.md

@@ -53,3 +53,6 @@ pc.ontrack = ev => {
 - https://www.webrtc-experiment.com/DetectRTC/
 - https://divtable.com/table-styler/
 - https://www.chromium.org/audio-video/
+- https://web.dev/i18n/en/fast-playback-with-preload/#manual_buffering
+- https://developer.mozilla.org/en-US/docs/Web/API/Media_Source_Extensions_API
+- https://chromium.googlesource.com/external/w3c/web-platform-tests/+/refs/heads/master/media-source/mediasource-is-type-supported.html

www/mse.html

@@ -25,93 +25,75 @@
 <!-- muted is important for autoplay -->
 <video id="video" autoplay controls playsinline muted></video>
 <script>
-    const video = document.querySelector('#video');
-
     // support api_path
     const baseUrl = location.origin + location.pathname.substr(
         0, location.pathname.lastIndexOf("/")
     );
-    const ws = new WebSocket(`ws${baseUrl.substr(4)}/api/ws${location.search}`);
+    const video = document.querySelector('#video');
-    ws.binaryType = "arraybuffer";
 
-    let mediaSource;
+    function init() {
+        let mediaSource, sourceBuffer, queueBuffer = [];
 
-    ws.onopen = () => {
+        const ws = new WebSocket(`ws${baseUrl.substr(4)}/api/ws${location.search}`);
-        console.log("Start WS");
+        ws.binaryType = "arraybuffer";
 
-        // https://web.dev/i18n/en/fast-playback-with-preload/#manual_buffering
+        ws.onopen = () => {
-        // https://developer.mozilla.org/en-US/docs/Web/API/Media_Source_Extensions_API
+            mediaSource = new MediaSource();
-        mediaSource = new MediaSource();
+            video.src = URL.createObjectURL(mediaSource);
-        video.src = URL.createObjectURL(mediaSource);
+            mediaSource.onsourceopen = () => {
-        mediaSource.onsourceopen = () => {
+                mediaSource.onsourceopen = null;
-            console.debug("mediaSource.onsourceopen");
+                URL.revokeObjectURL(video.src);
-
+                ws.send(JSON.stringify({"type": "mse"}));
-            mediaSource.onsourceopen = null;
+            };
-            URL.revokeObjectURL(video.src);
-            ws.send(JSON.stringify({"type": "mse"}));
         };
-    };
 
-    let sourceBuffer, queueBuffer = [];
+        ws.onmessage = ev => {
+            if (typeof ev.data === 'string') {
+                const data = JSON.parse(ev.data);
+                console.debug("ws.onmessage", data);
 
-    ws.onmessage = ev => {
+                if (data.type === "mse") {
-        if (typeof ev.data === 'string') {
+                    sourceBuffer = mediaSource.addSourceBuffer(data.value);
-            const data = JSON.parse(ev.data);
+                    sourceBuffer.mode = "segments"; // segments or sequence
-            console.debug("ws.onmessage", data);
+                    sourceBuffer.onupdateend = () => {
-
+                        if (!sourceBuffer.updating && queueBuffer.length > 0) {
-            if (data.type === "mse") {
+                            try {
-                sourceBuffer = mediaSource.addSourceBuffer(data.value);
+                                sourceBuffer.appendBuffer(queueBuffer.shift());
-                // important: segments supports TrackFragDecodeTime
+                            } catch (e) {
-                // sequence supports only TrackFragRunEntry Duration
+                                // console.warn(e);
-                sourceBuffer.mode = "segments";
+                            }
-                sourceBuffer.onupdateend = () => {
+                        }
-                    if (!sourceBuffer.updating && queueBuffer.length > 0) {
-                        sourceBuffer.appendBuffer(queueBuffer.shift());
                     }
                 }
-            }
+            } else if (sourceBuffer.updating || queueBuffer.length > 0) {
-        } else {
+                queueBuffer.push(ev.data);
-            if (sourceBuffer.updating) {
-                queueBuffer.push(ev.data)
             } else {
-                sourceBuffer.appendBuffer(ev.data);
+                try {
+                    sourceBuffer.appendBuffer(ev.data);
+                } catch (e) {
+                    // console.warn(e);
+                }
+            }
+
+            if (video.seekable.length > 0) {
+                const delay = video.seekable.end(video.seekable.length - 1) - video.currentTime;
+                if (delay < 1) {
+                    video.playbackRate = 1;
+                } else if (delay > 10) {
+                    video.playbackRate = 10;
+                } else if (delay > 2) {
+                    video.playbackRate = Math.floor(delay);
+                }
             }
         }
+
+        video.onpause = () => {
+            ws.close();
+            setTimeout(init, 0);
+        }
     }
 
-    let offsetTime = 1, noWaiting = 0;
+    init();
-
-    setInterval(() => {
-        if (video.paused || video.seekable.length === 0) return;
-
-        if (noWaiting < 0) {
-            offsetTime = Math.min(offsetTime * 1.1, 5);
-            console.debug("offset time up:", offsetTime);
-        } else if (noWaiting >= 30) {
-            noWaiting = 0;
-            offsetTime = Math.max(offsetTime * 0.9, 0.5);
-            console.debug("offset time down:", offsetTime);
-        }
-        noWaiting += 1;
-
-        const endTime = video.seekable.end(video.seekable.length - 1);
-        let playbackRate = (endTime - video.currentTime) / offsetTime;
-        if (playbackRate < 0.1) {
-            // video.currentTime = endTime - offsetTime;
-            playbackRate = 0.1;
-        } else if (playbackRate > 10) {
-            // video.currentTime = endTime - offsetTime;
-            playbackRate = 10;
-        }
-        // https://github.com/GoogleChrome/developer.chrome.com/issues/135
-        video.playbackRate = playbackRate;
-    }, 1000);
-
-    video.onwaiting = () => {
-        const endTime = video.seekable.end(video.seekable.length - 1);
-        video.currentTime = endTime - offsetTime;
-        noWaiting = -1;
-    }
 </script>
 </body>
 </html>

www/webrtc.html

@@ -25,12 +25,12 @@
 <body>
 <video id="video" autoplay controls playsinline muted></video>
 <script>
+    const baseUrl = location.origin + location.pathname.substr(
+        0, location.pathname.lastIndexOf("/")
+    );
+
     function init(stream) {
         // support api_path
-        const baseUrl = location.origin + location.pathname.substr(
-            0, location.pathname.lastIndexOf("/")
-        );
-
         const ws = new WebSocket(`ws${baseUrl.substr(4)}/api/ws${location.search}`);
         ws.onopen = () => {
             console.debug('ws.onopen');
@@ -51,11 +51,6 @@
                 pc.addIceCandidate({candidate: msg.value, sdpMid: ''});
             } else if (msg.type === 'webrtc/answer') {
                 pc.setRemoteDescription({type: 'answer', sdp: msg.value});
-                pc.getTransceivers().forEach(t => {
-                    if (t.receiver.track.kind === 'audio') {
-                        t.currentDirection
-                    }
-                })
             }
         }