Merge pull request #21 from mbattista/dev

update to pion v3

README.md

@@ -28,11 +28,14 @@ This app uses Web RTC to stream a desktop inside of a docker container. This is
 - Added RTMP broadcast. Enables broadcasting neko screen to local RTMP server, YouTube or Twitch.
 - Stereo sound (works properly only in Firefox host).
 - Added limited support for some mobile browsers with `playsinline` attribute.
+- Added `VIDEO_BITRATE` and `AUDIO_BITRATE` in kbit/s to control stream quality (in collaboration with @mbattista).
+- Added `MAX_FPS`, where you can specify max WebRTC frame rate. When set to `0`, frame rate won't be capped and you can enjoy your real `60fps` experience. Originally, it was constant at `25fps`.
 
 ### Bugs
 - Fixed minor gst pipeline bug.
 - Locked screen only for users, admins can still join.
 - Fixed h264 pipelines bugs (by @mbattista).
+- Fixed sessions manager thread safety by adding mutexes (caused panic in rare edge cases).
 
 ### Misc
 - Custom docker workflow.
@@ -42,6 +45,7 @@ This app uses Web RTC to stream a desktop inside of a docker container. This is
 - No pointer events for notify bars.
 - Disable debug mode by default.
 - Remove HTML tags from user name.
+- Upgraded `pion/webrtc` to v3 (by @mbattista).
 
 # Getting started & FAQ
 

client/src/neko/base.ts

@@ -2,7 +2,7 @@ import EventEmitter from 'eventemitter3'
 import { OPCODE } from './data'
 import { EVENT, WebSocketEvents } from './events'
 
-import { WebSocketMessages, WebSocketPayloads, SignalProvidePayload } from './messages'
+import { WebSocketMessages, WebSocketPayloads, SignalProvidePayload, SignalCandidatePayload } from './messages'
 
 export interface BaseEvents {
   info: (...message: any[]) => void
@@ -246,6 +246,15 @@ export abstract class BaseClient extends EventEmitter<BaseEvents> {
       this.createPeer(sdp, lite, ice)
       return
     }
+    if (event === EVENT.SIGNAL.CANDIDATE) {
+      const { data } = payload as SignalCandidatePayload
+      let candidate: RTCIceCandidate = JSON.parse(data)
+      this._peer!.addIceCandidate(candidate)
+
+      return
+    }
+
+
 
     // @ts-ignore
     if (typeof this[event] === 'function') {

client/src/neko/events.ts

@@ -14,6 +14,7 @@ export const EVENT = {
   SIGNAL: {
     ANSWER: 'signal/answer',
     PROVIDE: 'signal/provide',
+    CANDIDATE: 'signal/candidate',
   },
   MEMBER: {
     LIST: 'member/list',
@@ -78,7 +79,7 @@ export type ControlEvents =
 
 export type SystemEvents = typeof EVENT.SYSTEM.DISCONNECT
 export type MemberEvents = typeof EVENT.MEMBER.LIST | typeof EVENT.MEMBER.CONNECTED | typeof EVENT.MEMBER.DISCONNECTED
-export type SignalEvents = typeof EVENT.SIGNAL.ANSWER | typeof EVENT.SIGNAL.PROVIDE
+export type SignalEvents = typeof EVENT.SIGNAL.ANSWER | typeof EVENT.SIGNAL.PROVIDE | typeof EVENT.SIGNAL.CANDIDATE
 export type ChatEvents = typeof EVENT.CHAT.MESSAGE | typeof EVENT.CHAT.EMOTE
 export type ScreenEvents = typeof EVENT.SCREEN.CONFIGURATIONS | typeof EVENT.SCREEN.RESOLUTION | typeof EVENT.SCREEN.SET
 

client/src/neko/messages.ts

@@ -15,6 +15,7 @@ export type WebSocketMessages =
   | WebSocketMessage
   | SignalProvideMessage
   | SignalAnswerMessage
+  | SignalCandidateMessage
   | MemberListMessage
   | MemberConnectMessage
   | MemberDisconnectMessage
@@ -26,6 +27,7 @@ export type WebSocketMessages =
 export type WebSocketPayloads =
   | SignalProvidePayload
   | SignalAnswerPayload
+  | SignalCandidatePayload
   | MemberListPayload
   | Member
   | ControlPayload
@@ -78,6 +80,14 @@ export interface SignalAnswerPayload {
   displayname: string
 }
 
+// signal/candidate
+export interface SignalCandidateMessage extends WebSocketMessage, SignalCandidatePayload {
+  event: typeof EVENT.SIGNAL.CANDIDATE
+}
+export interface SignalCandidatePayload {
+  data: string
+}
+
 /*
   MEMBER MESSAGES/PAYLOADS
 */

server/go.mod

@@ -3,33 +3,30 @@ module n.eko.moe/neko
 go 1.13
 
 require (
-	github.com/coreos/go-etcd v2.0.0+incompatible // indirect
+	github.com/go-chi/chi v4.1.2+incompatible
-	github.com/cpuguy83/go-md2man v1.0.10 // indirect
+	github.com/google/uuid v1.2.0 // indirect
-	github.com/fsnotify/fsnotify v1.4.9 // indirect
+	github.com/gopherjs/gopherjs v0.0.0-20210202160940-bed99a852dfe // indirect
-	github.com/go-chi/chi v4.1.0+incompatible
-	github.com/golang/protobuf v1.3.5 // indirect
 	github.com/gorilla/websocket v1.4.2
 	github.com/kataras/go-events v0.0.2
-	github.com/lucas-clemente/quic-go v0.15.2 // indirect
+	github.com/kr/text v0.2.0 // indirect
-	github.com/mitchellh/mapstructure v1.2.2 // indirect
+	github.com/magiconair/properties v1.8.4 // indirect
-	github.com/pelletier/go-toml v1.7.0 // indirect
+	github.com/mitchellh/mapstructure v1.4.1 // indirect
-	github.com/pion/ice v0.7.12 // indirect
+	github.com/pelletier/go-toml v1.8.1 // indirect
+	github.com/pion/interceptor v0.0.9
 	github.com/pion/logging v0.2.2
-	github.com/pion/rtp v1.4.0 // indirect
+	github.com/pion/rtcp v1.2.6
-	github.com/pion/sdp/v2 v2.3.5 // indirect
+	github.com/pion/webrtc/v3 v3.0.8
-	github.com/pion/turn v1.4.0 // indirect
-	github.com/pion/webrtc/v2 v2.2.4
 	github.com/pkg/errors v0.9.1
-	github.com/rs/zerolog v1.18.0
+	github.com/rs/zerolog v1.20.0
-	github.com/spf13/afero v1.2.2 // indirect
+	github.com/smartystreets/assertions v1.2.0 // indirect
+	github.com/spf13/afero v1.5.1 // indirect
 	github.com/spf13/cast v1.3.1 // indirect
-	github.com/spf13/cobra v0.0.7
+	github.com/spf13/cobra v1.1.3
 	github.com/spf13/jwalterweatherman v1.1.0 // indirect
-	github.com/spf13/pflag v1.0.5 // indirect
+	github.com/spf13/viper v1.7.1
-	github.com/spf13/viper v1.6.2
+	golang.org/x/sys v0.0.0-20210124154548-22da62e12c0c // indirect
-	github.com/ugorji/go/codec v0.0.0-20181204163529-d75b2dcb6bc8 // indirect
+	golang.org/x/text v0.3.5 // indirect
-	golang.org/x/crypto v0.0.0-20200403201458-baeed622b8d8 // indirect
+	gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c // indirect
-	golang.org/x/sys v0.0.0-20200331124033-c3d80250170d // indirect
+	gopkg.in/ini.v1 v1.62.0 // indirect
-	golang.org/x/text v0.3.2 // indirect
+	gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b // indirect
-	gopkg.in/ini.v1 v1.55.0 // indirect
 )

server/go.sum

@@ -1,58 +1,53 @@
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-dmitri.shuralyov.com/app/changes v0.0.0-20180602232624-0a106ad413e3/go.mod h1:Yl+fi1br7+Rr3LqpNJf1/uxUdtRUV+Tnj0o93V2B9MU=
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@@ -61,44 +56,69 @@ github.com/gogo/protobuf v1.1.1/go.mod h1:r8qH/GZQm5c6nD/R0oafs1akxWv10x8SbQlK7a
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@@ -458,13 +471,16 @@ gopkg.in/yaml.v2 v2.2.1/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
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server/internal/gst/gst.go

@@ -10,10 +10,9 @@ import "C"
 import (
 	"fmt"
 	"sync"
+	"time"
 	"unsafe"
 
-	"github.com/pion/webrtc/v2"
-
 	"n.eko.moe/neko/internal/types"
 )
 
@@ -42,7 +41,6 @@ type Pipeline struct {
 	Pipeline  *C.GstElement
 	Sample    chan types.Sample
 	CodecName string
-	ClockRate float32
 	Src       string
 	id        int
 }
@@ -52,11 +50,8 @@ var pipelinesLock sync.Mutex
 var registry *C.GstRegistry
 
 const (
-	videoClockRate = 90000
+	videoSrc = "ximagesrc display-name=%s show-pointer=true use-damage=false ! video/x-raw,framerate=%d/1 ! videoconvert ! queue ! "
-	audioClockRate = 48000
+	audioSrc = "pulsesrc device=%s ! audio/x-raw,channels=2 ! audioconvert ! "
-	pcmClockRate   = 8000
-	videoSrc       = "ximagesrc display-name=%s show-pointer=true use-damage=false ! video/x-raw ! videoconvert ! queue ! "
-	audioSrc       = "pulsesrc device=%s ! audio/x-raw,channels=2 ! audioconvert ! "
 )
 
 func init() {
@@ -66,7 +61,7 @@ func init() {
 
 // CreateRTMPPipeline creates a GStreamer Pipeline
 func CreateRTMPPipeline(pipelineDevice string, pipelineDisplay string, pipelineSrc string, pipelineRTMP string) (*Pipeline, error) {
-	video := fmt.Sprintf(videoSrc, pipelineDisplay)
+	video := fmt.Sprintf(videoSrc, pipelineDisplay, 25)
 	audio := fmt.Sprintf(audioSrc, pipelineDevice)
 
 	var pipelineStr string
@@ -76,17 +71,15 @@ func CreateRTMPPipeline(pipelineDevice string, pipelineDisplay string, pipelineS
 		pipelineStr = fmt.Sprintf("flvmux name=mux ! rtmpsink location='%s live=1' %s audio/x-raw,channels=2 ! audioconvert ! voaacenc ! mux. %s x264enc bframes=0 key-int-max=60 byte-stream=true tune=zerolatency speed-preset=veryfast ! mux.", pipelineRTMP, audio, video)
 	}
 
-	return CreatePipeline(pipelineStr, "", 0)
+	return CreatePipeline(pipelineStr, "")
 }
 
 // CreateAppPipeline creates a GStreamer Pipeline
-func CreateAppPipeline(codecName string, pipelineDevice string, pipelineSrc string) (*Pipeline, error) {
+func CreateAppPipeline(codecName string, pipelineDevice string, pipelineSrc string, fps int, bitrate uint) (*Pipeline, error) {
 	pipelineStr := " ! appsink name=appsink"
 
-	var clockRate float32
-
 	switch codecName {
-	case webrtc.VP8:
+	case "VP8":
 		// https://gstreamer.freedesktop.org/documentation/vpx/vp8enc.html?gi-language=c
 		// gstreamer1.0-plugins-good
 		// vp8enc error-resilient=partitions keyframe-max-dist=10 auto-alt-ref=true cpu-used=5 deadline=1
@@ -94,14 +87,12 @@ func CreateAppPipeline(codecName string, pipelineDevice string, pipelineSrc stri
 			return nil, err
 		}
 
-		clockRate = videoClockRate
-
 		if pipelineSrc != "" {
 			pipelineStr = fmt.Sprintf(pipelineSrc+pipelineStr, pipelineDevice)
 		} else {
-			pipelineStr = fmt.Sprintf(videoSrc+"vp8enc cpu-used=8 threads=2 deadline=1 error-resilient=partitions keyframe-max-dist=10 auto-alt-ref=true"+pipelineStr, pipelineDevice)
+			pipelineStr = fmt.Sprintf(videoSrc+"vp8enc target-bitrate=%d cpu-used=-5 threads=4 deadline=1 error-resilient=partitions keyframe-max-dist=30 auto-alt-ref=true"+pipelineStr, pipelineDevice, fps, bitrate*1000)
 		}
-	case webrtc.VP9:
+	case "VP9":
 		// https://gstreamer.freedesktop.org/documentation/vpx/vp9enc.html?gi-language=c
 		// gstreamer1.0-plugins-good
 		// vp9enc
@@ -109,43 +100,39 @@ func CreateAppPipeline(codecName string, pipelineDevice string, pipelineSrc stri
 			return nil, err
 		}
 
-		clockRate = videoClockRate
-
 		// Causes panic! not sure why...
 		if pipelineSrc != "" {
 			pipelineStr = fmt.Sprintf(pipelineSrc+pipelineStr, pipelineDevice)
 		} else {
-			pipelineStr = fmt.Sprintf(videoSrc+"vp9enc"+pipelineStr, pipelineDevice)
+			pipelineStr = fmt.Sprintf(videoSrc+"vp9enc target-bitrate=%d cpu-used=-5 threads=4 deadline=1 keyframe-max-dist=30 auto-alt-ref=true"+pipelineStr, pipelineDevice, fps, bitrate*1000)
 		}
-	case webrtc.H264:
+	case "H264":
-		// https://gstreamer.freedesktop.org/documentation/openh264/openh264enc.html?gi-language=c#openh264enc
-		// gstreamer1.0-plugins-bad
-		// openh264enc multi-thread=4 complexity=high bitrate=3072000 max-bitrate=4096000
 		if err := CheckPlugins([]string{"ximagesrc"}); err != nil {
 			return nil, err
 		}
 
-		clockRate = videoClockRate
-
 		if pipelineSrc != "" {
 			pipelineStr = fmt.Sprintf(pipelineSrc+pipelineStr, pipelineDevice)
-		} else {
+			break
-      var h264Str string
-			h264Str = "openh264enc multi-thread=4 complexity=high bitrate=3072000 max-bitrate=4096000 ! video/x-h264,stream-format=byte-stream"
-
-			// https://gstreamer.freedesktop.org/documentation/x264/index.html?gi-language=c
-			// gstreamer1.0-plugins-ugly
-			// video/x-raw,format=I420 ! x264enc bframes=0 key-int-max=60 byte-stream=true tune=zerolatency speed-preset=veryfast ! video/x-h264,stream-format=byte-stream
-			if err := CheckPlugins([]string{"openh264"}); err != nil {
-				h264Str = "video/x-raw,format=I420 ! x264enc bframes=0 key-int-max=60 byte-stream=true tune=zerolatency speed-preset=veryfast ! video/x-h264,stream-format=byte-stream"
-
-				if err := CheckPlugins([]string{"x264"}); err != nil {
-					return nil, err
-				}
-			}
-      pipelineStr = fmt.Sprintf(videoSrc+h264Str+pipelineStr, pipelineDevice)
 		}
-	case webrtc.Opus:
+
+		// https://gstreamer.freedesktop.org/documentation/openh264/openh264enc.html?gi-language=c#openh264enc
+		// gstreamer1.0-plugins-bad
+		// openh264enc multi-thread=4 complexity=high bitrate=3072000 max-bitrate=4096000
+		if err := CheckPlugins([]string{"openh264"}); err == nil {
+			pipelineStr = fmt.Sprintf(videoSrc+"openh264enc multi-thread=4 complexity=high bitrate=%d max-bitrate=%d ! video/x-h264,stream-format=byte-stream"+pipelineStr, pipelineDevice, fps, bitrate*1000, (bitrate+1024)*1000)
+			break
+		}
+
+		// https://gstreamer.freedesktop.org/documentation/x264/index.html?gi-language=c
+		// gstreamer1.0-plugins-ugly
+		// video/x-raw,format=I420 ! x264enc bframes=0 key-int-max=60 byte-stream=true tune=zerolatency speed-preset=veryfast ! video/x-h264,stream-format=byte-stream
+		if err := CheckPlugins([]string{"x264"}); err != nil {
+			return nil, err
+		}
+
+		pipelineStr = fmt.Sprintf(videoSrc+"video/x-raw,format=I420 ! x264enc threads=4 bitrate=%d byte-stream=true tune=zerolatency speed-preset=veryfast ! video/x-h264,stream-format=byte-stream"+pipelineStr, pipelineDevice, fps, bitrate)
+	case "Opus":
 		// https://gstreamer.freedesktop.org/documentation/opus/opusenc.html
 		// gstreamer1.0-plugins-base
 		// opusenc
@@ -153,14 +140,12 @@ func CreateAppPipeline(codecName string, pipelineDevice string, pipelineSrc stri
 			return nil, err
 		}
 
-		clockRate = audioClockRate
-
 		if pipelineSrc != "" {
 			pipelineStr = fmt.Sprintf(pipelineSrc+pipelineStr, pipelineDevice)
 		} else {
-			pipelineStr = fmt.Sprintf(audioSrc+"opusenc"+pipelineStr, pipelineDevice)
+			pipelineStr = fmt.Sprintf(audioSrc+"opusenc bitrate=%d"+pipelineStr, pipelineDevice, bitrate*1000)
 		}
-	case webrtc.G722:
+	case "G722":
 		// https://gstreamer.freedesktop.org/documentation/libav/avenc_g722.html?gi-language=c
 		// gstreamer1.0-libav
 		// avenc_g722
@@ -168,14 +153,12 @@ func CreateAppPipeline(codecName string, pipelineDevice string, pipelineSrc stri
 			return nil, err
 		}
 
-		clockRate = audioClockRate
-
 		if pipelineSrc != "" {
 			pipelineStr = fmt.Sprintf(pipelineSrc+pipelineStr, pipelineDevice)
 		} else {
-			pipelineStr = fmt.Sprintf(audioSrc+"avenc_g722"+pipelineStr, pipelineDevice)
+			pipelineStr = fmt.Sprintf(audioSrc+"avenc_g722 bitrate=%d"+pipelineStr, pipelineDevice, bitrate*1000)
 		}
-	case webrtc.PCMU:
+	case "PCMU":
 		// https://gstreamer.freedesktop.org/documentation/mulaw/mulawenc.html?gi-language=c
 		// gstreamer1.0-plugins-good
 		// audio/x-raw, rate=8000 ! mulawenc
@@ -183,14 +166,12 @@ func CreateAppPipeline(codecName string, pipelineDevice string, pipelineSrc stri
 			return nil, err
 		}
 
-		clockRate = pcmClockRate
-
 		if pipelineSrc != "" {
 			pipelineStr = fmt.Sprintf(pipelineSrc+pipelineStr, pipelineDevice)
 		} else {
 			pipelineStr = fmt.Sprintf(audioSrc+"audio/x-raw, rate=8000 ! mulawenc"+pipelineStr, pipelineDevice)
 		}
-	case webrtc.PCMA:
+	case "PCMA":
 		// https://gstreamer.freedesktop.org/documentation/alaw/alawenc.html?gi-language=c
 		// gstreamer1.0-plugins-good
 		// audio/x-raw, rate=8000 ! alawenc
@@ -198,8 +179,6 @@ func CreateAppPipeline(codecName string, pipelineDevice string, pipelineSrc stri
 			return nil, err
 		}
 
-		clockRate = pcmClockRate
-
 		if pipelineSrc != "" {
 			pipelineStr = fmt.Sprintf(pipelineSrc+pipelineStr, pipelineDevice)
 		} else {
@@ -209,11 +188,11 @@ func CreateAppPipeline(codecName string, pipelineDevice string, pipelineSrc stri
 		return nil, fmt.Errorf("unknown codec %s", codecName)
 	}
 
-	return CreatePipeline(pipelineStr, codecName, clockRate)
+	return CreatePipeline(pipelineStr, codecName)
 }
 
 // CreatePipeline creates a GStreamer Pipeline
-func CreatePipeline(pipelineStr string, codecName string, clockRate float32) (*Pipeline, error) {
+func CreatePipeline(pipelineStr string, codecName string) (*Pipeline, error) {
 	pipelineStrUnsafe := C.CString(pipelineStr)
 	defer C.free(unsafe.Pointer(pipelineStrUnsafe))
 
@@ -224,7 +203,6 @@ func CreatePipeline(pipelineStr string, codecName string, clockRate float32) (*P
 		Pipeline:  C.gstreamer_send_create_pipeline(pipelineStrUnsafe),
 		Sample:    make(chan types.Sample),
 		CodecName: codecName,
-		ClockRate: clockRate,
 		Src:       pipelineStr,
 		id:        len(pipelines),
 	}
@@ -270,8 +248,7 @@ func goHandlePipelineBuffer(buffer unsafe.Pointer, bufferLen C.int, duration C.i
 	pipelinesLock.Unlock()
 
 	if ok {
-		samples := uint32(pipeline.ClockRate * (float32(duration) / 1000000000))
+		pipeline.Sample <- types.Sample{Data: C.GoBytes(buffer, bufferLen), Timestamp: time.Now(), Duration: time.Duration(duration)}
-		pipeline.Sample <- types.Sample{Data: C.GoBytes(buffer, bufferLen), Samples: samples}
 	} else {
 		fmt.Printf("discarding buffer, no pipeline with id %d", int(pipelineID))
 	}

server/internal/remote/manager.go

@@ -130,11 +130,19 @@ func (manager *RemoteManager) Streaming() bool {
 }
 
 func (manager *RemoteManager) createPipelines() {
+	// handle maximum fps
+	rate := manager.config.ScreenRate
+	if manager.config.MaxFPS != 0 && manager.config.MaxFPS < manager.config.ScreenRate {
+		rate = manager.config.MaxFPS
+	}
+
 	var err error
 	manager.video, err = gst.CreateAppPipeline(
 		manager.config.VideoCodec,
 		manager.config.Display,
 		manager.config.VideoParams,
+		rate,
+		manager.config.VideoBitrate,
 	)
 	if err != nil {
 		manager.logger.Panic().Err(err).Msg("unable to create video pipeline")
@@ -144,6 +152,8 @@ func (manager *RemoteManager) createPipelines() {
 		manager.config.AudioCodec,
 		manager.config.Device,
 		manager.config.AudioParams,
+		0, // fps: n/a for audio
+		manager.config.AudioBitrate,
 	)
 	if err != nil {
 		manager.logger.Panic().Err(err).Msg("unable to create audio pipeline")
@@ -169,11 +179,18 @@ func (manager *RemoteManager) ChangeResolution(width int, height int, rate int)
 		return err
 	}
 
+	// handle maximum fps
+	if manager.config.MaxFPS != 0 && manager.config.MaxFPS < rate {
+		rate = manager.config.MaxFPS
+	}
+
 	var err error
 	manager.video, err = gst.CreateAppPipeline(
 		manager.config.VideoCodec,
 		manager.config.Display,
 		manager.config.VideoParams,
+		rate,
+		manager.config.VideoBitrate,
 	)
 	if err != nil {
 		manager.logger.Panic().Err(err).Msg("unable to create new video pipeline")

server/internal/session/manager.go

@@ -2,6 +2,7 @@ package session
 
 import (
 	"fmt"
+	"sync"
 
 	"github.com/kataras/go-events"
 	"github.com/rs/zerolog"
@@ -22,6 +23,7 @@ func New(remote types.RemoteManager) *SessionManager {
 }
 
 type SessionManager struct {
+	mu      sync.Mutex
 	logger  zerolog.Logger
 	host    string
 	remote  types.RemoteManager
@@ -39,13 +41,14 @@ func (manager *SessionManager) New(id string, admin bool, socket types.WebSocket
 		connected: false,
 	}
 
+	manager.mu.Lock()
 	manager.members[id] = session
-	manager.emmiter.Emit("created", id, session)
-
 	if manager.remote.Streaming() != true && len(manager.members) > 0 {
 		manager.remote.StartStream()
 	}
+	manager.mu.Unlock()
 
+	manager.emmiter.Emit("created", id, session)
 	return session
 }
 
@@ -58,16 +61,23 @@ func (manager *SessionManager) IsHost(id string) bool {
 }
 
 func (manager *SessionManager) SetHost(id string) error {
+	manager.mu.Lock()
 	_, ok := manager.members[id]
+	manager.mu.Unlock()
+
 	if ok {
 		manager.host = id
 		manager.emmiter.Emit("host", id)
 		return nil
 	}
+
 	return fmt.Errorf("invalid session id %s", id)
 }
 
 func (manager *SessionManager) GetHost() (types.Session, bool) {
+	manager.mu.Lock()
+	defer manager.mu.Unlock()
+
 	host, ok := manager.members[manager.host]
 	return host, ok
 }
@@ -79,16 +89,25 @@ func (manager *SessionManager) ClearHost() {
 }
 
 func (manager *SessionManager) Has(id string) bool {
+	manager.mu.Lock()
+	defer manager.mu.Unlock()
+
 	_, ok := manager.members[id]
 	return ok
 }
 
 func (manager *SessionManager) Get(id string) (types.Session, bool) {
+	manager.mu.Lock()
+	defer manager.mu.Unlock()
+
 	session, ok := manager.members[id]
 	return session, ok
 }
 
 func (manager *SessionManager) Admins() []*types.Member {
+	manager.mu.Lock()
+	defer manager.mu.Unlock()
+
 	members := []*types.Member{}
 	for _, session := range manager.members {
 		if !session.connected || !session.admin {
@@ -100,10 +119,14 @@ func (manager *SessionManager) Admins() []*types.Member {
 			members = append(members, member)
 		}
 	}
+
 	return members
 }
 
 func (manager *SessionManager) Members() []*types.Member {
+	manager.mu.Lock()
+	defer manager.mu.Unlock()
+
 	members := []*types.Member{}
 	for _, session := range manager.members {
 		if !session.connected {
@@ -119,6 +142,7 @@ func (manager *SessionManager) Members() []*types.Member {
 }
 
 func (manager *SessionManager) Destroy(id string) error {
+	manager.mu.Lock()
 	session, ok := manager.members[id]
 	if ok {
 		err := session.destroy()
@@ -127,11 +151,13 @@ func (manager *SessionManager) Destroy(id string) error {
 		if manager.remote.Streaming() != false && len(manager.members) <= 0 {
 			manager.remote.StopStream()
 		}
+		manager.mu.Unlock()
 
 		manager.emmiter.Emit("destroyed", id, session)
 		return err
 	}
 
+	manager.mu.Unlock()
 	return nil
 }
 
@@ -140,6 +166,9 @@ func (manager *SessionManager) Clear() error {
 }
 
 func (manager *SessionManager) Broadcast(v interface{}, exclude interface{}) error {
+	manager.mu.Lock()
+	defer manager.mu.Unlock()
+
 	for id, session := range manager.members {
 		if !session.connected {
 			continue

server/internal/session/session.go

@@ -120,6 +120,16 @@ func (session *Session) SignalAnswer(sdp string) error {
 	return session.peer.SignalAnswer(sdp)
 }
 
+func (session *Session) SignalCandidate(data string) error {
+	if session.socket == nil {
+		return nil
+	}
+	return session.socket.Send(&message.SignalCandidate{
+		Event: event.SIGNAL_CANDIDATE,
+		Data: data,
+	});
+}
+
 func (session *Session) destroy() error {
 	if session.socket != nil {
 		if err := session.socket.Destroy(); err != nil {

server/internal/types/config/remote.go

@@ -4,7 +4,6 @@ import (
 	"regexp"
 	"strconv"
 
-	"github.com/pion/webrtc/v2"
 	"github.com/spf13/cobra"
 	"github.com/spf13/viper"
 )
@@ -14,11 +13,14 @@ type Remote struct {
 	Device       string
 	AudioCodec   string
 	AudioParams  string
+	AudioBitrate uint
 	VideoCodec   string
 	VideoParams  string
+	VideoBitrate uint
 	ScreenWidth  int
 	ScreenHeight int
 	ScreenRate   int
+	MaxFPS       int
 }
 
 func (Remote) Init(cmd *cobra.Command) error {
@@ -37,16 +39,31 @@ func (Remote) Init(cmd *cobra.Command) error {
 		return err
 	}
 
+	cmd.PersistentFlags().Int("audio_bitrate", 128, "audio bitrate in kbit/s")
+	if err := viper.BindPFlag("audio_bitrate", cmd.PersistentFlags().Lookup("audio_bitrate")); err != nil {
+		return err
+	}
+
 	cmd.PersistentFlags().String("video", "", "video codec parameters to use for streaming")
 	if err := viper.BindPFlag("video", cmd.PersistentFlags().Lookup("video")); err != nil {
 		return err
 	}
 
+	cmd.PersistentFlags().Int("video_bitrate", 3072, "video bitrate in kbit/s")
+	if err := viper.BindPFlag("video_bitrate", cmd.PersistentFlags().Lookup("video_bitrate")); err != nil {
+		return err
+	}
+
 	cmd.PersistentFlags().String("screen", "1280x720@30", "default screen resolution and framerate")
 	if err := viper.BindPFlag("screen", cmd.PersistentFlags().Lookup("screen")); err != nil {
 		return err
 	}
 
+	cmd.PersistentFlags().Int("max_fps", 25, "maximum fps delivered via WebRTC, 0 is for no maximum")
+	if err := viper.BindPFlag("max_fps", cmd.PersistentFlags().Lookup("max_fps")); err != nil {
+		return err
+	}
+
 	// video codecs
 	cmd.PersistentFlags().Bool("vp8", false, "use VP8 video codec")
 	if err := viper.BindPFlag("vp8", cmd.PersistentFlags().Lookup("vp8")); err != nil {
@@ -88,32 +105,34 @@ func (Remote) Init(cmd *cobra.Command) error {
 }
 
 func (s *Remote) Set() {
-	videoCodec := webrtc.VP8
+	videoCodec := "VP8"
 	if viper.GetBool("vp8") {
-		videoCodec = webrtc.VP8
+		videoCodec = "VP8"
 	} else if viper.GetBool("vp9") {
-		videoCodec = webrtc.VP9
+		videoCodec = "VP9"
 	} else if viper.GetBool("h264") {
-		videoCodec = webrtc.H264
+		videoCodec = "H264"
 	}
 
-	audioCodec := webrtc.Opus
+	audioCodec := "Opus"
 	if viper.GetBool("opus") {
-		audioCodec = webrtc.Opus
+		audioCodec = "Opus"
 	} else if viper.GetBool("g722") {
-		audioCodec = webrtc.G722
+		audioCodec = "G722"
 	} else if viper.GetBool("pcmu") {
-		audioCodec = webrtc.PCMU
+		audioCodec = "PCMU"
 	} else if viper.GetBool("pcma") {
-		audioCodec = webrtc.PCMA
+		audioCodec = "PCMA"
 	}
 
 	s.Device = viper.GetString("device")
 	s.AudioCodec = audioCodec
 	s.AudioParams = viper.GetString("audio")
+	s.AudioBitrate = viper.GetUint("audio_bitrate")
 	s.Display = viper.GetString("display")
 	s.VideoCodec = videoCodec
 	s.VideoParams = viper.GetString("video")
+	s.VideoBitrate = viper.GetUint("video_bitrate")
 
 	s.ScreenWidth = 1280
 	s.ScreenHeight = 720
@@ -133,4 +152,6 @@ func (s *Remote) Set() {
 			s.ScreenRate = int(rate)
 		}
 	}
+
+	s.MaxFPS = viper.GetInt("max_fps")
 }

server/internal/types/event/events.go

@@ -5,8 +5,10 @@ const (
 )
 
 const (
-	SIGNAL_ANSWER  = "signal/answer"
+	SIGNAL_ANSWER    = "signal/answer"
-	SIGNAL_PROVIDE = "signal/provide"
+	SIGNAL_OFFER     = "signal/offer"
+	SIGNAL_PROVIDE   = "signal/provide"
+	SIGNAL_CANDIDATE = "signal/candidate"
 )
 
 const (

server/internal/types/message/messages.go

@@ -27,6 +27,11 @@ type SignalAnswer struct {
 	SDP         string `json:"sdp"`
 }
 
+type SignalCandidate struct {
+	Event   string `json:"event"`
+	Data    string `json:"data"`
+}
+
 type MembersList struct {
 	Event    string          `json:"event"`
 	Memebers []*types.Member `json:"members"`

server/internal/types/session.go

@@ -24,6 +24,7 @@ type Session interface {
 	Write(v interface{}) error
 	Send(v interface{}) error
 	SignalAnswer(sdp string) error
+	SignalCandidate(data string) error
 }
 
 type SessionManager interface {

server/internal/types/webrtc.go

@@ -1,8 +1,13 @@
 package types
 
+import (
+	"time"
+)
+
 type Sample struct {
-	Data    []byte
+	Data       []byte
-	Samples uint32
+	Timestamp  time.Time
+	Duration   time.Duration
 }
 
 type WebRTCManager interface {

server/internal/webrtc/handle.go

@@ -5,7 +5,7 @@ import (
 	"encoding/binary"
 	"strconv"
 
-	"github.com/pion/webrtc/v2"
+	"github.com/pion/webrtc/v3"
 )
 
 const OP_MOVE = 0x01

server/internal/webrtc/peer.go

@@ -3,7 +3,7 @@ package webrtc
 import (
 	"sync"
 
-	"github.com/pion/webrtc/v2"
+	"github.com/pion/webrtc/v3"
 )
 
 type Peer struct {

server/internal/webrtc/webrtc.go

@@ -1,13 +1,15 @@
 package webrtc
 
 import (
+	"encoding/json"
 	"fmt"
 	"io"
-	"math/rand"
 	"strings"
+	"time"
 
-	"github.com/pion/webrtc/v2"
+	"github.com/pion/interceptor"
-	"github.com/pion/webrtc/v2/pkg/media"
+	"github.com/pion/webrtc/v3"
+	"github.com/pion/webrtc/v3/pkg/media"
 	"github.com/rs/zerolog"
 	"github.com/rs/zerolog/log"
 
@@ -26,10 +28,10 @@ func New(sessions types.SessionManager, remote types.RemoteManager, config *conf
 
 type WebRTCManager struct {
 	logger     zerolog.Logger
-	videoTrack *webrtc.Track
+	videoTrack *webrtc.TrackLocalStaticSample
-	audioTrack *webrtc.Track
+	audioTrack *webrtc.TrackLocalStaticSample
-	videoCodec *webrtc.RTPCodec
+	videoCodec webrtc.RTPCodecParameters
-	audioCodec *webrtc.RTPCodec
+	audioCodec webrtc.RTPCodecParameters
 	sessions   types.SessionManager
 	remote     types.RemoteManager
 	config     *config.WebRTC
@@ -97,15 +99,22 @@ func (manager *WebRTCManager) CreatePeer(id string, session types.Session) (stri
 
 	settings.SetEphemeralUDPPortRange(manager.config.EphemeralMin, manager.config.EphemeralMax)
 	settings.SetNAT1To1IPs(manager.config.NAT1To1IPs, webrtc.ICECandidateTypeHost)
+	settings.SetICETimeouts(6 * time.Second, 6 * time.Second, 3 * time.Second)
+	settings.SetSRTPReplayProtectionWindow(512)
 
 	// Create MediaEngine based off sdp
 	engine := webrtc.MediaEngine{}
 
-	engine.RegisterCodec(manager.audioCodec)
+	engine.RegisterCodec(manager.audioCodec, webrtc.RTPCodecTypeAudio)
-	engine.RegisterCodec(manager.videoCodec)
+	engine.RegisterCodec(manager.videoCodec, webrtc.RTPCodecTypeVideo)
+
+	i := &interceptor.Registry{}
+	if err := webrtc.RegisterDefaultInterceptors(&engine, i); err != nil {
+		return "", manager.config.ICELite, manager.config.ICEServers, err
+	}
 
 	// Create API with MediaEngine and SettingEngine
-	api := webrtc.NewAPI(webrtc.WithMediaEngine(engine), webrtc.WithSettingEngine(settings))
+	api := webrtc.NewAPI(webrtc.WithMediaEngine(&engine), webrtc.WithSettingEngine(settings), webrtc.WithInterceptorRegistry(i))
 
 	// Create new peer connection
 	connection, err := api.NewPeerConnection(*configuration)
@@ -113,19 +122,10 @@ func (manager *WebRTCManager) CreatePeer(id string, session types.Session) (stri
 		return "", manager.config.ICELite, manager.config.ICEServers, err
 	}
 
-	if _, err = connection.AddTransceiverFromTrack(manager.videoTrack, webrtc.RtpTransceiverInit{
+	negotiated := true
-		Direction: webrtc.RTPTransceiverDirectionSendonly,
+	_, err = connection.CreateDataChannel("data", &webrtc.DataChannelInit{
-	}); err != nil {
+		Negotiated: &negotiated,
-		return "", manager.config.ICELite, manager.config.ICEServers, err
+	})
-	}
-
-	if _, err = connection.AddTransceiverFromTrack(manager.audioTrack, webrtc.RtpTransceiverInit{
-		Direction: webrtc.RTPTransceiverDirectionSendonly,
-	}); err != nil {
-		return "", manager.config.ICELite, manager.config.ICEServers, err
-	}
-
-	description, err := connection.CreateOffer(nil)
 	if err != nil {
 		return "", manager.config.ICELite, manager.config.ICEServers, err
 	}
@@ -138,7 +138,32 @@ func (manager *WebRTCManager) CreatePeer(id string, session types.Session) (stri
 		})
 	})
 
-	connection.SetLocalDescription(description)
+	// Set the handler for ICE connection state
+	// This will notify you when the peer has connected/disconnected
+	connection.OnICEConnectionStateChange(func(connectionState webrtc.ICEConnectionState) {
+		manager.logger.Info().
+			Str("connection_state", connectionState.String()).
+			Msg("connection state has changed")
+	})
+
+	if _, err = connection.AddTrack(manager.videoTrack); err != nil {
+		return "", manager.config.ICELite, manager.config.ICEServers, err
+	}
+
+	if _, err = connection.AddTrack(manager.audioTrack); err != nil {
+		return "", manager.config.ICELite, manager.config.ICEServers, err
+	}
+
+	description, err := connection.CreateOffer(nil)
+	if err != nil {
+		return "", manager.config.ICELite, manager.config.ICEServers, err
+	}
+
+	err = connection.SetLocalDescription(description)
+	if err != nil {
+		return "", manager.config.ICELite, manager.config.ICEServers, err
+	}
+
 	connection.OnConnectionStateChange(func(state webrtc.PeerConnectionState) {
 		switch state {
 		case webrtc.PeerConnectionStateDisconnected:
@@ -156,6 +181,24 @@ func (manager *WebRTCManager) CreatePeer(id string, session types.Session) (stri
 		}
 	})
 
+	connection.OnICECandidate(func(i *webrtc.ICECandidate) {
+		if i == nil {
+			manager.logger.Info().Msg("sent all ICECandidates")
+			return
+		}
+
+		candidateString, err := json.Marshal(i.ToJSON())
+		if err != nil {
+			manager.logger.Warn().Err(err).Msg("converting ICECandidate to json failed")
+			return
+		}
+
+		if err := session.SignalCandidate(string(candidateString)); err != nil {
+			manager.logger.Warn().Err(err).Msg("sending SignalCandidate failed")
+			return
+		}
+	})
+
 	if err := session.SetPeer(&Peer{
 		id:            id,
 		api:           api,
@@ -171,30 +214,33 @@ func (manager *WebRTCManager) CreatePeer(id string, session types.Session) (stri
 	return description.SDP, manager.config.ICELite, manager.config.ICEServers, nil
 }
 
-func (m *WebRTCManager) createTrack(codecName string) (*webrtc.Track, *webrtc.RTPCodec, error) {
+func (m *WebRTCManager) createTrack(codecName string) (*webrtc.TrackLocalStaticSample, webrtc.RTPCodecParameters, error) {
-	var codec *webrtc.RTPCodec
+	var codec webrtc.RTPCodecParameters
+
+	fb := []webrtc.RTCPFeedback{}
+
 	switch codecName {
-	case webrtc.VP8:
+	case "VP8":
-		codec = webrtc.NewRTPVP8Codec(webrtc.DefaultPayloadTypeVP8, 90000)
+		codec = webrtc.RTPCodecParameters{RTPCodecCapability: webrtc.RTPCodecCapability{MimeType: "video/VP8", ClockRate: 90000, Channels: 0, SDPFmtpLine: "", RTCPFeedback: fb}, PayloadType: 96}
-	case webrtc.VP9:
+	case "VP9":
-		codec = webrtc.NewRTPVP9Codec(webrtc.DefaultPayloadTypeVP9, 90000)
+		codec = webrtc.RTPCodecParameters{RTPCodecCapability: webrtc.RTPCodecCapability{MimeType: "video/VP9", ClockRate: 90000, Channels: 0, SDPFmtpLine: "", RTCPFeedback: fb}, PayloadType: 98}
-	case webrtc.H264:
+	case "H264":
-		codec = webrtc.NewRTPH264Codec(webrtc.DefaultPayloadTypeH264, 90000)
+		codec = webrtc.RTPCodecParameters{RTPCodecCapability: webrtc.RTPCodecCapability{MimeType: "video/H264", ClockRate: 90000, Channels: 0, SDPFmtpLine: "level-asymmetry-allowed=1;packetization-mode=1;profile-level-id=42001f", RTCPFeedback: fb}, PayloadType: 102}
-	case webrtc.Opus:
+	case "Opus":
-		codec = webrtc.NewRTPOpusCodec(webrtc.DefaultPayloadTypeOpus, 48000)
+		codec = webrtc.RTPCodecParameters{RTPCodecCapability: webrtc.RTPCodecCapability{MimeType: "audio/opus", ClockRate: 48000, Channels: 2, SDPFmtpLine: "", RTCPFeedback: fb}, PayloadType: 111}
-	case webrtc.G722:
+	case "G722":
-		codec = webrtc.NewRTPG722Codec(webrtc.DefaultPayloadTypeG722, 8000)
+		codec = webrtc.RTPCodecParameters{RTPCodecCapability: webrtc.RTPCodecCapability{MimeType: "audio/G722", ClockRate: 8000, Channels: 0, SDPFmtpLine: "", RTCPFeedback: fb}, PayloadType: 9}
-	case webrtc.PCMU:
+	case "PCMU":
-		codec = webrtc.NewRTPPCMUCodec(webrtc.DefaultPayloadTypePCMU, 8000)
+		codec = webrtc.RTPCodecParameters{RTPCodecCapability: webrtc.RTPCodecCapability{MimeType: "audio/PCMU", ClockRate: 8000, Channels: 0, SDPFmtpLine: "", RTCPFeedback: fb}, PayloadType: 0}
-	case webrtc.PCMA:
+	case "PCMA":
-		codec = webrtc.NewRTPPCMACodec(webrtc.DefaultPayloadTypePCMA, 8000)
+		codec = webrtc.RTPCodecParameters{RTPCodecCapability: webrtc.RTPCodecCapability{MimeType: "audio/PCMA", ClockRate: 8000, Channels: 0, SDPFmtpLine: "", RTCPFeedback: fb}, PayloadType: 8}
 	default:
-		return nil, nil, fmt.Errorf("unknown codec %s", codecName)
+		return nil, codec, fmt.Errorf("unknown codec %s", codecName)
 	}
 
-	track, err := webrtc.NewTrack(codec.PayloadType, rand.Uint32(), "stream", "stream", codec)
+	track, err := webrtc.NewTrackLocalStaticSample(codec.RTPCodecCapability, "stream", "stream")
 	if err != nil {
-		return nil, nil, err
+		return nil, codec, err
 	}
 
 	return track, codec, nil