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Code Issues Releases Wiki Activity

Move Janus classes to separate files, no functional changes.

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This commit is contained in:
Joachim Bauch 2024-04-18 14:53:37 +02:00
parent ceb87bb728
commit a0b438e4f8
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GPG key ID: 77C1D22D53E15F02
7 changed files with 951 additions and 807 deletions
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807
mcu_janus.go
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@ -23,12 +23,10 @@ package signaling
import (
"context"
"database/sql"
"encoding/json"
"errors"
"fmt"
"log"
"reflect"
"strconv"
"sync"
"sync/atomic"
@ -445,272 +443,6 @@ func (m *mcuJanus) sendKeepalive() {
}
}
type mcuJanusClient struct {
mcu *mcuJanus
listener McuListener
mu sync.Mutex // nolint
id uint64
session uint64
roomId uint64
sid string
streamType StreamType
maxBitrate int
handle *JanusHandle
handleId uint64
closeChan chan struct{}
deferred chan func()
handleEvent func(event *janus.EventMsg)
handleHangup func(event *janus.HangupMsg)
handleDetached func(event *janus.DetachedMsg)
handleConnected func(event *janus.WebRTCUpMsg)
handleSlowLink func(event *janus.SlowLinkMsg)
handleMedia func(event *janus.MediaMsg)
}
func (c *mcuJanusClient) Id() string {
return strconv.FormatUint(c.id, 10)
}
func (c *mcuJanusClient) Sid() string {
return c.sid
}
func (c *mcuJanusClient) StreamType() StreamType {
return c.streamType
}
func (c *mcuJanusClient) MaxBitrate() int {
return c.maxBitrate
}
func (c *mcuJanusClient) Close(ctx context.Context) {
}
func (c *mcuJanusClient) SendMessage(ctx context.Context, message *MessageClientMessage, data *MessageClientMessageData, callback func(error, map[string]interface{})) {
}
func (c *mcuJanusClient) closeClient(ctx context.Context) bool {
if handle := c.handle; handle != nil {
c.handle = nil
close(c.closeChan)
if _, err := handle.Detach(ctx); err != nil {
if e, ok := err.(*janus.ErrorMsg); !ok || e.Err.Code != JANUS_ERROR_HANDLE_NOT_FOUND {
log.Println("Could not detach client", handle.Id, err)
}
}
return true
}
return false
}
func (c *mcuJanusClient) run(handle *JanusHandle, closeChan <-chan struct{}) {
loop:
for {
select {
case msg := <-handle.Events:
switch t := msg.(type) {
case *janus.EventMsg:
c.handleEvent(t)
case *janus.HangupMsg:
c.handleHangup(t)
case *janus.DetachedMsg:
c.handleDetached(t)
case *janus.MediaMsg:
c.handleMedia(t)
case *janus.WebRTCUpMsg:
c.handleConnected(t)
case *janus.SlowLinkMsg:
c.handleSlowLink(t)
case *TrickleMsg:
c.handleTrickle(t)
default:
log.Println("Received unsupported event type", msg, reflect.TypeOf(msg))
}
case f := <-c.deferred:
f()
case <-closeChan:
break loop
}
}
}
func (c *mcuJanusClient) sendOffer(ctx context.Context, offer map[string]interface{}, callback func(error, map[string]interface{})) {
handle := c.handle
if handle == nil {
callback(ErrNotConnected, nil)
return
}
configure_msg := map[string]interface{}{
"request": "configure",
"audio": true,
"video": true,
"data": true,
}
answer_msg, err := handle.Message(ctx, configure_msg, offer)
if err != nil {
callback(err, nil)
return
}
callback(nil, answer_msg.Jsep)
}
func (c *mcuJanusClient) sendAnswer(ctx context.Context, answer map[string]interface{}, callback func(error, map[string]interface{})) {
handle := c.handle
if handle == nil {
callback(ErrNotConnected, nil)
return
}
start_msg := map[string]interface{}{
"request": "start",
"room": c.roomId,
}
start_response, err := handle.Message(ctx, start_msg, answer)
if err != nil {
callback(err, nil)
return
}
log.Println("Started listener", start_response)
callback(nil, nil)
}
func (c *mcuJanusClient) sendCandidate(ctx context.Context, candidate interface{}, callback func(error, map[string]interface{})) {
handle := c.handle
if handle == nil {
callback(ErrNotConnected, nil)
return
}
if _, err := handle.Trickle(ctx, candidate); err != nil {
callback(err, nil)
return
}
callback(nil, nil)
}
func (c *mcuJanusClient) handleTrickle(event *TrickleMsg) {
if event.Candidate.Completed {
c.listener.OnIceCompleted(c)
} else {
c.listener.OnIceCandidate(c, event.Candidate)
}
}
func (c *mcuJanusClient) selectStream(ctx context.Context, stream *streamSelection, callback func(error, map[string]interface{})) {
handle := c.handle
if handle == nil {
callback(ErrNotConnected, nil)
return
}
if stream == nil || !stream.HasValues() {
callback(nil, nil)
return
}
configure_msg := map[string]interface{}{
"request": "configure",
}
if stream != nil {
stream.AddToMessage(configure_msg)
}
_, err := handle.Message(ctx, configure_msg, nil)
if err != nil {
callback(err, nil)
return
}
callback(nil, nil)
}
type publisherStatsCounter struct {
mu sync.Mutex
streamTypes map[StreamType]bool
subscribers map[string]bool
}
func (c *publisherStatsCounter) Reset() {
c.mu.Lock()
defer c.mu.Unlock()
count := len(c.subscribers)
for streamType := range c.streamTypes {
statsMcuPublisherStreamTypesCurrent.WithLabelValues(string(streamType)).Dec()
statsMcuSubscriberStreamTypesCurrent.WithLabelValues(string(streamType)).Sub(float64(count))
}
c.streamTypes = nil
c.subscribers = nil
}
func (c *publisherStatsCounter) EnableStream(streamType StreamType, enable bool) {
c.mu.Lock()
defer c.mu.Unlock()
if enable == c.streamTypes[streamType] {
return
}
if enable {
if c.streamTypes == nil {
c.streamTypes = make(map[StreamType]bool)
}
c.streamTypes[streamType] = true
statsMcuPublisherStreamTypesCurrent.WithLabelValues(string(streamType)).Inc()
statsMcuSubscriberStreamTypesCurrent.WithLabelValues(string(streamType)).Add(float64(len(c.subscribers)))
} else {
delete(c.streamTypes, streamType)
statsMcuPublisherStreamTypesCurrent.WithLabelValues(string(streamType)).Dec()
statsMcuSubscriberStreamTypesCurrent.WithLabelValues(string(streamType)).Sub(float64(len(c.subscribers)))
}
}
func (c *publisherStatsCounter) AddSubscriber(id string) {
c.mu.Lock()
defer c.mu.Unlock()
if c.subscribers[id] {
return
}
if c.subscribers == nil {
c.subscribers = make(map[string]bool)
}
c.subscribers[id] = true
for streamType := range c.streamTypes {
statsMcuSubscriberStreamTypesCurrent.WithLabelValues(string(streamType)).Inc()
}
}
func (c *publisherStatsCounter) RemoveSubscriber(id string) {
c.mu.Lock()
defer c.mu.Unlock()
if !c.subscribers[id] {
return
}
delete(c.subscribers, id)
for streamType := range c.streamTypes {
statsMcuSubscriberStreamTypesCurrent.WithLabelValues(string(streamType)).Dec()
}
}
type mcuJanusPublisher struct {
mcuJanusClient
id string
bitrate int
mediaTypes MediaType
stats publisherStatsCounter
}
func (m *mcuJanus) SubscriberConnected(id string, publisher string, streamType StreamType) {
m.mu.Lock()
defer m.mu.Unlock()
@ -867,178 +599,6 @@ func (m *mcuJanus) NewPublisher(ctx context.Context, listener McuListener, id st
return client, nil
}
func (p *mcuJanusPublisher) handleEvent(event *janus.EventMsg) {
if videoroom := getPluginStringValue(event.Plugindata, pluginVideoRoom, "videoroom"); videoroom != "" {
ctx := context.TODO()
switch videoroom {
case "destroyed":
log.Printf("Publisher %d: associated room has been destroyed, closing", p.handleId)
go p.Close(ctx)
case "slow_link":
// Ignore, processed through "handleSlowLink" in the general events.
default:
log.Printf("Unsupported videoroom publisher event in %d: %+v", p.handleId, event)
}
} else {
log.Printf("Unsupported publisher event in %d: %+v", p.handleId, event)
}
}
func (p *mcuJanusPublisher) handleHangup(event *janus.HangupMsg) {
log.Printf("Publisher %d received hangup (%s), closing", p.handleId, event.Reason)
go p.Close(context.Background())
}
func (p *mcuJanusPublisher) handleDetached(event *janus.DetachedMsg) {
log.Printf("Publisher %d received detached, closing", p.handleId)
go p.Close(context.Background())
}
func (p *mcuJanusPublisher) handleConnected(event *janus.WebRTCUpMsg) {
log.Printf("Publisher %d received connected", p.handleId)
p.mcu.publisherConnected.Notify(getStreamId(p.id, p.streamType))
}
func (p *mcuJanusPublisher) handleSlowLink(event *janus.SlowLinkMsg) {
if event.Uplink {
log.Printf("Publisher %s (%d) is reporting %d lost packets on the uplink (Janus -> client)", p.listener.PublicId(), p.handleId, event.Lost)
} else {
log.Printf("Publisher %s (%d) is reporting %d lost packets on the downlink (client -> Janus)", p.listener.PublicId(), p.handleId, event.Lost)
}
}
func (p *mcuJanusPublisher) handleMedia(event *janus.MediaMsg) {
mediaType := StreamType(event.Type)
if mediaType == StreamTypeVideo && p.streamType == StreamTypeScreen {
// We want to differentiate between audio, video and screensharing
mediaType = p.streamType
}
p.stats.EnableStream(mediaType, event.Receiving)
}
func (p *mcuJanusPublisher) HasMedia(mt MediaType) bool {
return (p.mediaTypes & mt) == mt
}
func (p *mcuJanusPublisher) SetMedia(mt MediaType) {
p.mediaTypes = mt
}
func (p *mcuJanusPublisher) NotifyReconnected() {
ctx := context.TODO()
handle, session, roomId, _, err := p.mcu.getOrCreatePublisherHandle(ctx, p.id, p.streamType, p.bitrate)
if err != nil {
log.Printf("Could not reconnect publisher %s: %s", p.id, err)
// TODO(jojo): Retry
return
}
p.handle = handle
p.handleId = handle.Id
p.session = session
p.roomId = roomId
log.Printf("Publisher %s reconnected on handle %d", p.id, p.handleId)
}
func (p *mcuJanusPublisher) Close(ctx context.Context) {
notify := false
p.mu.Lock()
if handle := p.handle; handle != nil && p.roomId != 0 {
destroy_msg := map[string]interface{}{
"request": "destroy",
"room": p.roomId,
}
if _, err := handle.Request(ctx, destroy_msg); err != nil {
log.Printf("Error destroying room %d: %s", p.roomId, err)
} else {
log.Printf("Room %d destroyed", p.roomId)
}
p.mcu.mu.Lock()
delete(p.mcu.publishers, getStreamId(p.id, p.streamType))
p.mcu.mu.Unlock()
p.roomId = 0
notify = true
}
p.closeClient(ctx)
p.mu.Unlock()
p.stats.Reset()
if notify {
statsPublishersCurrent.WithLabelValues(string(p.streamType)).Dec()
p.mcu.unregisterClient(p)
p.listener.PublisherClosed(p)
}
p.mcuJanusClient.Close(ctx)
}
func (p *mcuJanusPublisher) SendMessage(ctx context.Context, message *MessageClientMessage, data *MessageClientMessageData, callback func(error, map[string]interface{})) {
statsMcuMessagesTotal.WithLabelValues(data.Type).Inc()
jsep_msg := data.Payload
switch data.Type {
case "offer":
p.deferred <- func() {
msgctx, cancel := context.WithTimeout(context.Background(), p.mcu.mcuTimeout)
defer cancel()
// TODO Tear down previous publisher and get a new one if sid does
// not match?
p.sendOffer(msgctx, jsep_msg, callback)
}
case "candidate":
p.deferred <- func() {
msgctx, cancel := context.WithTimeout(context.Background(), p.mcu.mcuTimeout)
defer cancel()
if data.Sid == "" || data.Sid == p.Sid() {
p.sendCandidate(msgctx, jsep_msg["candidate"], callback)
} else {
go callback(fmt.Errorf("Candidate message sid (%s) does not match publisher sid (%s)", data.Sid, p.Sid()), nil)
}
}
case "endOfCandidates":
// Ignore
default:
go callback(fmt.Errorf("Unsupported message type: %s", data.Type), nil)
}
}
func (p *mcuJanusPublisher) PublishRemote(ctx context.Context, hostname string, port int, rtcpPort int) error {
msg := map[string]interface{}{
"request": "publish_remotely",
"room": p.roomId,
"publisher_id": streamTypeUserIds[p.streamType],
"remote_id": p.id,
"host": hostname,
"port": port,
"rtcp_port": rtcpPort,
}
response, err := p.handle.Request(ctx, msg)
if err != nil {
return err
}
errorMessage := getPluginStringValue(response.PluginData, pluginVideoRoom, "error")
errorCode := getPluginIntValue(response.PluginData, pluginVideoRoom, "error_code")
if errorMessage != "" || errorCode != 0 {
if errorMessage == "" {
errorMessage = "unknown error"
}
return fmt.Errorf("%s (%d)", errorMessage, errorCode)
}
log.Printf("Publishing %s to %s (port=%d, rtcpPort=%d)", p.id, hostname, port, rtcpPort)
return nil
}
type mcuJanusSubscriber struct {
mcuJanusClient
publisher string
}
func (m *mcuJanus) getPublisher(ctx context.Context, publisher string, streamType StreamType) (*mcuJanusPublisher, error) {
// Do the direct check immediately as this should be the normal case.
key := getStreamId(publisher, streamType)
@ -1302,370 +862,3 @@ func (m *mcuJanus) NewRemoteSubscriber(ctx context.Context, listener McuListener
statsSubscribersTotal.WithLabelValues(string(publisher.StreamType())).Inc()
return client, nil
}
func (p *mcuJanusSubscriber) Publisher() string {
return p.publisher
}
func (p *mcuJanusSubscriber) handleEvent(event *janus.EventMsg) {
if videoroom := getPluginStringValue(event.Plugindata, pluginVideoRoom, "videoroom"); videoroom != "" {
ctx := context.TODO()
switch videoroom {
case "destroyed":
log.Printf("Subscriber %d: associated room has been destroyed, closing", p.handleId)
go p.Close(ctx)
case "event":
// Handle renegotiations, but ignore other events like selected
// substream / temporal layer.
if getPluginStringValue(event.Plugindata, pluginVideoRoom, "configured") == "ok" &&
event.Jsep != nil && event.Jsep["type"] == "offer" && event.Jsep["sdp"] != nil {
p.listener.OnUpdateOffer(p, event.Jsep)
}
case "slow_link":
// Ignore, processed through "handleSlowLink" in the general events.
default:
log.Printf("Unsupported videoroom event %s for subscriber %d: %+v", videoroom, p.handleId, event)
}
} else {
log.Printf("Unsupported event for subscriber %d: %+v", p.handleId, event)
}
}
func (p *mcuJanusSubscriber) handleHangup(event *janus.HangupMsg) {
log.Printf("Subscriber %d received hangup (%s), closing", p.handleId, event.Reason)
go p.Close(context.Background())
}
func (p *mcuJanusSubscriber) handleDetached(event *janus.DetachedMsg) {
log.Printf("Subscriber %d received detached, closing", p.handleId)
go p.Close(context.Background())
}
func (p *mcuJanusSubscriber) handleConnected(event *janus.WebRTCUpMsg) {
log.Printf("Subscriber %d received connected", p.handleId)
p.mcu.SubscriberConnected(p.Id(), p.publisher, p.streamType)
}
func (p *mcuJanusSubscriber) handleSlowLink(event *janus.SlowLinkMsg) {
if event.Uplink {
log.Printf("Subscriber %s (%d) is reporting %d lost packets on the uplink (Janus -> client)", p.listener.PublicId(), p.handleId, event.Lost)
} else {
log.Printf("Subscriber %s (%d) is reporting %d lost packets on the downlink (client -> Janus)", p.listener.PublicId(), p.handleId, event.Lost)
}
}
func (p *mcuJanusSubscriber) handleMedia(event *janus.MediaMsg) {
// Only triggered for publishers
}
func (p *mcuJanusSubscriber) NotifyReconnected() {
ctx, cancel := context.WithTimeout(context.Background(), p.mcu.mcuTimeout)
defer cancel()
handle, pub, err := p.mcu.getOrCreateSubscriberHandle(ctx, p.publisher, p.streamType)
if err != nil {
// TODO(jojo): Retry?
log.Printf("Could not reconnect subscriber for publisher %s: %s", p.publisher, err)
p.Close(context.Background())
return
}
p.handle = handle
p.handleId = handle.Id
p.roomId = pub.roomId
p.sid = strconv.FormatUint(handle.Id, 10)
p.listener.SubscriberSidUpdated(p)
log.Printf("Subscriber %d for publisher %s reconnected on handle %d", p.id, p.publisher, p.handleId)
}
func (p *mcuJanusSubscriber) Close(ctx context.Context) {
p.mu.Lock()
closed := p.closeClient(ctx)
p.mu.Unlock()
if closed {
p.mcu.SubscriberDisconnected(p.Id(), p.publisher, p.streamType)
statsSubscribersCurrent.WithLabelValues(string(p.streamType)).Dec()
}
p.mcu.unregisterClient(p)
p.listener.SubscriberClosed(p)
p.mcuJanusClient.Close(ctx)
}
func (p *mcuJanusSubscriber) joinRoom(ctx context.Context, stream *streamSelection, callback func(error, map[string]interface{})) {
handle := p.handle
if handle == nil {
callback(ErrNotConnected, nil)
return
}
waiter := p.mcu.publisherConnected.NewWaiter(getStreamId(p.publisher, p.streamType))
defer p.mcu.publisherConnected.Release(waiter)
loggedNotPublishingYet := false
retry:
join_msg := map[string]interface{}{
"request": "join",
"ptype": "subscriber",
"room": p.roomId,
}
if p.mcu.isMultistream() {
join_msg["streams"] = []map[string]interface{}{
{
"feed": streamTypeUserIds[p.streamType],
},
}
} else {
join_msg["feed"] = streamTypeUserIds[p.streamType]
}
if stream != nil {
stream.AddToMessage(join_msg)
}
join_response, err := handle.Message(ctx, join_msg, nil)
if err != nil {
callback(err, nil)
return
}
if error_code := getPluginIntValue(join_response.Plugindata, pluginVideoRoom, "error_code"); error_code > 0 {
switch error_code {
case JANUS_VIDEOROOM_ERROR_ALREADY_JOINED:
// The subscriber is already connected to the room. This can happen
// if a client leaves a call but keeps the subscriber objects active.
// On joining the call again, the subscriber tries to join on the
// MCU which will fail because he is still connected.
// To get a new Offer SDP, we have to tear down the session on the
// MCU and join again.
p.mu.Lock()
p.closeClient(ctx)
p.mu.Unlock()
var pub *mcuJanusPublisher
handle, pub, err = p.mcu.getOrCreateSubscriberHandle(ctx, p.publisher, p.streamType)
if err != nil {
// Reconnection didn't work, need to unregister/remove subscriber
// so a new object will be created if the request is retried.
p.mcu.unregisterClient(p)
p.listener.SubscriberClosed(p)
callback(fmt.Errorf("Already connected as subscriber for %s, error during re-joining: %s", p.streamType, err), nil)
return
}
p.handle = handle
p.handleId = handle.Id
p.roomId = pub.roomId
p.sid = strconv.FormatUint(handle.Id, 10)
p.listener.SubscriberSidUpdated(p)
p.closeChan = make(chan struct{}, 1)
go p.run(p.handle, p.closeChan)
log.Printf("Already connected subscriber %d for %s, leaving and re-joining on handle %d", p.id, p.streamType, p.handleId)
goto retry
case JANUS_VIDEOROOM_ERROR_NO_SUCH_ROOM:
fallthrough
case JANUS_VIDEOROOM_ERROR_NO_SUCH_FEED:
switch error_code {
case JANUS_VIDEOROOM_ERROR_NO_SUCH_ROOM:
log.Printf("Publisher %s not created yet for %s, wait and retry to join room %d as subscriber", p.publisher, p.streamType, p.roomId)
case JANUS_VIDEOROOM_ERROR_NO_SUCH_FEED:
log.Printf("Publisher %s not sending yet for %s, wait and retry to join room %d as subscriber", p.publisher, p.streamType, p.roomId)
}
if !loggedNotPublishingYet {
loggedNotPublishingYet = true
statsWaitingForPublisherTotal.WithLabelValues(string(p.streamType)).Inc()
}
if err := waiter.Wait(ctx); err != nil {
callback(err, nil)
return
}
log.Printf("Retry subscribing %s from %s", p.streamType, p.publisher)
goto retry
default:
// TODO(jojo): Should we handle other errors, too?
callback(fmt.Errorf("Error joining room as subscriber: %+v", join_response), nil)
return
}
}
//log.Println("Joined as listener", join_response)
p.session = join_response.Session
callback(nil, join_response.Jsep)
}
func (p *mcuJanusSubscriber) update(ctx context.Context, stream *streamSelection, callback func(error, map[string]interface{})) {
handle := p.handle
if handle == nil {
callback(ErrNotConnected, nil)
return
}
configure_msg := map[string]interface{}{
"request": "configure",
"update": true,
}
if stream != nil {
stream.AddToMessage(configure_msg)
}
configure_response, err := handle.Message(ctx, configure_msg, nil)
if err != nil {
callback(err, nil)
return
}
callback(nil, configure_response.Jsep)
}
type streamSelection struct {
substream sql.NullInt16
temporal sql.NullInt16
audio sql.NullBool
video sql.NullBool
}
func (s *streamSelection) HasValues() bool {
return s.substream.Valid || s.temporal.Valid || s.audio.Valid || s.video.Valid
}
func (s *streamSelection) AddToMessage(message map[string]interface{}) {
if s.substream.Valid {
message["substream"] = s.substream.Int16
}
if s.temporal.Valid {
message["temporal"] = s.temporal.Int16
}
if s.audio.Valid {
message["audio"] = s.audio.Bool
}
if s.video.Valid {
message["video"] = s.video.Bool
}
}
func parseStreamSelection(payload map[string]interface{}) (*streamSelection, error) {
var stream streamSelection
if value, found := payload["substream"]; found {
switch value := value.(type) {
case int:
stream.substream.Valid = true
stream.substream.Int16 = int16(value)
case float32:
stream.substream.Valid = true
stream.substream.Int16 = int16(value)
case float64:
stream.substream.Valid = true
stream.substream.Int16 = int16(value)
default:
return nil, fmt.Errorf("Unsupported substream value: %v", value)
}
}
if value, found := payload["temporal"]; found {
switch value := value.(type) {
case int:
stream.temporal.Valid = true
stream.temporal.Int16 = int16(value)
case float32:
stream.temporal.Valid = true
stream.temporal.Int16 = int16(value)
case float64:
stream.temporal.Valid = true
stream.temporal.Int16 = int16(value)
default:
return nil, fmt.Errorf("Unsupported temporal value: %v", value)
}
}
if value, found := payload["audio"]; found {
switch value := value.(type) {
case bool:
stream.audio.Valid = true
stream.audio.Bool = value
default:
return nil, fmt.Errorf("Unsupported audio value: %v", value)
}
}
if value, found := payload["video"]; found {
switch value := value.(type) {
case bool:
stream.video.Valid = true
stream.video.Bool = value
default:
return nil, fmt.Errorf("Unsupported video value: %v", value)
}
}
return &stream, nil
}
func (p *mcuJanusSubscriber) SendMessage(ctx context.Context, message *MessageClientMessage, data *MessageClientMessageData, callback func(error, map[string]interface{})) {
statsMcuMessagesTotal.WithLabelValues(data.Type).Inc()
jsep_msg := data.Payload
switch data.Type {
case "requestoffer":
fallthrough
case "sendoffer":
p.deferred <- func() {
msgctx, cancel := context.WithTimeout(context.Background(), p.mcu.mcuTimeout)
defer cancel()
stream, err := parseStreamSelection(jsep_msg)
if err != nil {
go callback(err, nil)
return
}
if data.Sid == "" || data.Sid != p.Sid() {
p.joinRoom(msgctx, stream, callback)
} else {
p.update(msgctx, stream, callback)
}
}
case "answer":
p.deferred <- func() {
msgctx, cancel := context.WithTimeout(context.Background(), p.mcu.mcuTimeout)
defer cancel()
if data.Sid == "" || data.Sid == p.Sid() {
p.sendAnswer(msgctx, jsep_msg, callback)
} else {
go callback(fmt.Errorf("Answer message sid (%s) does not match subscriber sid (%s)", data.Sid, p.Sid()), nil)
}
}
case "candidate":
p.deferred <- func() {
msgctx, cancel := context.WithTimeout(context.Background(), p.mcu.mcuTimeout)
defer cancel()
if data.Sid == "" || data.Sid == p.Sid() {
p.sendCandidate(msgctx, jsep_msg["candidate"], callback)
} else {
go callback(fmt.Errorf("Candidate message sid (%s) does not match subscriber sid (%s)", data.Sid, p.Sid()), nil)
}
}
case "endOfCandidates":
// Ignore
case "selectStream":
stream, err := parseStreamSelection(jsep_msg)
if err != nil {
go callback(err, nil)
return
}
if stream == nil || !stream.HasValues() {
// Nothing to do
go callback(nil, nil)
return
}
p.deferred <- func() {
msgctx, cancel := context.WithTimeout(context.Background(), p.mcu.mcuTimeout)
defer cancel()
p.selectStream(msgctx, stream, callback)
}
default:
// Return error asynchronously
go callback(fmt.Errorf("Unsupported message type: %s", data.Type), nil)
}
}

216
mcu_janus_client.go Normal file
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/**
* Standalone signaling server for the Nextcloud Spreed app.
* Copyright (C) 2017 struktur AG
*
* @author Joachim Bauch <bauch@struktur.de>
*
* @license GNU AGPL version 3 or any later version
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package signaling
import (
"context"
"log"
"reflect"
"strconv"
"sync"
"github.com/notedit/janus-go"
)
type mcuJanusClient struct {
mcu *mcuJanus
listener McuListener
mu sync.Mutex // nolint
id uint64
session uint64
roomId uint64
sid string
streamType StreamType
maxBitrate int
handle *JanusHandle
handleId uint64
closeChan chan struct{}
deferred chan func()
handleEvent func(event *janus.EventMsg)
handleHangup func(event *janus.HangupMsg)
handleDetached func(event *janus.DetachedMsg)
handleConnected func(event *janus.WebRTCUpMsg)
handleSlowLink func(event *janus.SlowLinkMsg)
handleMedia func(event *janus.MediaMsg)
}
func (c *mcuJanusClient) Id() string {
return strconv.FormatUint(c.id, 10)
}
func (c *mcuJanusClient) Sid() string {
return c.sid
}
func (c *mcuJanusClient) StreamType() StreamType {
return c.streamType
}
func (c *mcuJanusClient) MaxBitrate() int {
return c.maxBitrate
}
func (c *mcuJanusClient) Close(ctx context.Context) {
}
func (c *mcuJanusClient) SendMessage(ctx context.Context, message *MessageClientMessage, data *MessageClientMessageData, callback func(error, map[string]interface{})) {
}
func (c *mcuJanusClient) closeClient(ctx context.Context) bool {
if handle := c.handle; handle != nil {
c.handle = nil
close(c.closeChan)
if _, err := handle.Detach(ctx); err != nil {
if e, ok := err.(*janus.ErrorMsg); !ok || e.Err.Code != JANUS_ERROR_HANDLE_NOT_FOUND {
log.Println("Could not detach client", handle.Id, err)
}
}
return true
}
return false
}
func (c *mcuJanusClient) run(handle *JanusHandle, closeChan <-chan struct{}) {
loop:
for {
select {
case msg := <-handle.Events:
switch t := msg.(type) {
case *janus.EventMsg:
c.handleEvent(t)
case *janus.HangupMsg:
c.handleHangup(t)
case *janus.DetachedMsg:
c.handleDetached(t)
case *janus.MediaMsg:
c.handleMedia(t)
case *janus.WebRTCUpMsg:
c.handleConnected(t)
case *janus.SlowLinkMsg:
c.handleSlowLink(t)
case *TrickleMsg:
c.handleTrickle(t)
default:
log.Println("Received unsupported event type", msg, reflect.TypeOf(msg))
}
case f := <-c.deferred:
f()
case <-closeChan:
break loop
}
}
}
func (c *mcuJanusClient) sendOffer(ctx context.Context, offer map[string]interface{}, callback func(error, map[string]interface{})) {
handle := c.handle
if handle == nil {
callback(ErrNotConnected, nil)
return
}
configure_msg := map[string]interface{}{
"request": "configure",
"audio": true,
"video": true,
"data": true,
}
answer_msg, err := handle.Message(ctx, configure_msg, offer)
if err != nil {
callback(err, nil)
return
}
callback(nil, answer_msg.Jsep)
}
func (c *mcuJanusClient) sendAnswer(ctx context.Context, answer map[string]interface{}, callback func(error, map[string]interface{})) {
handle := c.handle
if handle == nil {
callback(ErrNotConnected, nil)
return
}
start_msg := map[string]interface{}{
"request": "start",
"room": c.roomId,
}
start_response, err := handle.Message(ctx, start_msg, answer)
if err != nil {
callback(err, nil)
return
}
log.Println("Started listener", start_response)
callback(nil, nil)
}
func (c *mcuJanusClient) sendCandidate(ctx context.Context, candidate interface{}, callback func(error, map[string]interface{})) {
handle := c.handle
if handle == nil {
callback(ErrNotConnected, nil)
return
}
if _, err := handle.Trickle(ctx, candidate); err != nil {
callback(err, nil)
return
}
callback(nil, nil)
}
func (c *mcuJanusClient) handleTrickle(event *TrickleMsg) {
if event.Candidate.Completed {
c.listener.OnIceCompleted(c)
} else {
c.listener.OnIceCandidate(c, event.Candidate)
}
}
func (c *mcuJanusClient) selectStream(ctx context.Context, stream *streamSelection, callback func(error, map[string]interface{})) {
handle := c.handle
if handle == nil {
callback(ErrNotConnected, nil)
return
}
if stream == nil || !stream.HasValues() {
callback(nil, nil)
return
}
configure_msg := map[string]interface{}{
"request": "configure",
}
if stream != nil {
stream.AddToMessage(configure_msg)
}
_, err := handle.Message(ctx, configure_msg, nil)
if err != nil {
callback(err, nil)
return
}
callback(nil, nil)
}

205
mcu_janus_publisher.go Normal file
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/**
* Standalone signaling server for the Nextcloud Spreed app.
* Copyright (C) 2017 struktur AG
*
* @author Joachim Bauch <bauch@struktur.de>
*
* @license GNU AGPL version 3 or any later version
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package signaling
import (
"context"
"fmt"
"log"
"github.com/notedit/janus-go"
)
type mcuJanusPublisher struct {
mcuJanusClient
id string
bitrate int
mediaTypes MediaType
stats publisherStatsCounter
}
func (p *mcuJanusPublisher) handleEvent(event *janus.EventMsg) {
if videoroom := getPluginStringValue(event.Plugindata, pluginVideoRoom, "videoroom"); videoroom != "" {
ctx := context.TODO()
switch videoroom {
case "destroyed":
log.Printf("Publisher %d: associated room has been destroyed, closing", p.handleId)
go p.Close(ctx)
case "slow_link":
// Ignore, processed through "handleSlowLink" in the general events.
default:
log.Printf("Unsupported videoroom publisher event in %d: %+v", p.handleId, event)
}
} else {
log.Printf("Unsupported publisher event in %d: %+v", p.handleId, event)
}
}
func (p *mcuJanusPublisher) handleHangup(event *janus.HangupMsg) {
log.Printf("Publisher %d received hangup (%s), closing", p.handleId, event.Reason)
go p.Close(context.Background())
}
func (p *mcuJanusPublisher) handleDetached(event *janus.DetachedMsg) {
log.Printf("Publisher %d received detached, closing", p.handleId)
go p.Close(context.Background())
}
func (p *mcuJanusPublisher) handleConnected(event *janus.WebRTCUpMsg) {
log.Printf("Publisher %d received connected", p.handleId)
p.mcu.publisherConnected.Notify(getStreamId(p.id, p.streamType))
}
func (p *mcuJanusPublisher) handleSlowLink(event *janus.SlowLinkMsg) {
if event.Uplink {
log.Printf("Publisher %s (%d) is reporting %d lost packets on the uplink (Janus -> client)", p.listener.PublicId(), p.handleId, event.Lost)
} else {
log.Printf("Publisher %s (%d) is reporting %d lost packets on the downlink (client -> Janus)", p.listener.PublicId(), p.handleId, event.Lost)
}
}
func (p *mcuJanusPublisher) handleMedia(event *janus.MediaMsg) {
mediaType := StreamType(event.Type)
if mediaType == StreamTypeVideo && p.streamType == StreamTypeScreen {
// We want to differentiate between audio, video and screensharing
mediaType = p.streamType
}
p.stats.EnableStream(mediaType, event.Receiving)
}
func (p *mcuJanusPublisher) HasMedia(mt MediaType) bool {
return (p.mediaTypes & mt) == mt
}
func (p *mcuJanusPublisher) SetMedia(mt MediaType) {
p.mediaTypes = mt
}
func (p *mcuJanusPublisher) NotifyReconnected() {
ctx := context.TODO()
handle, session, roomId, _, err := p.mcu.getOrCreatePublisherHandle(ctx, p.id, p.streamType, p.bitrate)
if err != nil {
log.Printf("Could not reconnect publisher %s: %s", p.id, err)
// TODO(jojo): Retry
return
}
p.handle = handle
p.handleId = handle.Id
p.session = session
p.roomId = roomId
log.Printf("Publisher %s reconnected on handle %d", p.id, p.handleId)
}
func (p *mcuJanusPublisher) Close(ctx context.Context) {
notify := false
p.mu.Lock()
if handle := p.handle; handle != nil && p.roomId != 0 {
destroy_msg := map[string]interface{}{
"request": "destroy",
"room": p.roomId,
}
if _, err := handle.Request(ctx, destroy_msg); err != nil {
log.Printf("Error destroying room %d: %s", p.roomId, err)
} else {
log.Printf("Room %d destroyed", p.roomId)
}
p.mcu.mu.Lock()
delete(p.mcu.publishers, getStreamId(p.id, p.streamType))
p.mcu.mu.Unlock()
p.roomId = 0
notify = true
}
p.closeClient(ctx)
p.mu.Unlock()
p.stats.Reset()
if notify {
statsPublishersCurrent.WithLabelValues(string(p.streamType)).Dec()
p.mcu.unregisterClient(p)
p.listener.PublisherClosed(p)
}
p.mcuJanusClient.Close(ctx)
}
func (p *mcuJanusPublisher) SendMessage(ctx context.Context, message *MessageClientMessage, data *MessageClientMessageData, callback func(error, map[string]interface{})) {
statsMcuMessagesTotal.WithLabelValues(data.Type).Inc()
jsep_msg := data.Payload
switch data.Type {
case "offer":
p.deferred <- func() {
msgctx, cancel := context.WithTimeout(context.Background(), p.mcu.mcuTimeout)
defer cancel()
// TODO Tear down previous publisher and get a new one if sid does
// not match?
p.sendOffer(msgctx, jsep_msg, callback)
}
case "candidate":
p.deferred <- func() {
msgctx, cancel := context.WithTimeout(context.Background(), p.mcu.mcuTimeout)
defer cancel()
if data.Sid == "" || data.Sid == p.Sid() {
p.sendCandidate(msgctx, jsep_msg["candidate"], callback)
} else {
go callback(fmt.Errorf("Candidate message sid (%s) does not match publisher sid (%s)", data.Sid, p.Sid()), nil)
}
}
case "endOfCandidates":
// Ignore
default:
go callback(fmt.Errorf("Unsupported message type: %s", data.Type), nil)
}
}
func (p *mcuJanusPublisher) PublishRemote(ctx context.Context, hostname string, port int, rtcpPort int) error {
msg := map[string]interface{}{
"request": "publish_remotely",
"room": p.roomId,
"publisher_id": streamTypeUserIds[p.streamType],
"remote_id": p.id,
"host": hostname,
"port": port,
"rtcp_port": rtcpPort,
}
response, err := p.handle.Request(ctx, msg)
if err != nil {
return err
}
errorMessage := getPluginStringValue(response.PluginData, pluginVideoRoom, "error")
errorCode := getPluginIntValue(response.PluginData, pluginVideoRoom, "error_code")
if errorMessage != "" || errorCode != 0 {
if errorMessage == "" {
errorMessage = "unknown error"
}
return fmt.Errorf("%s (%d)", errorMessage, errorCode)
}
log.Printf("Publishing %s to %s (port=%d, rtcpPort=%d)", p.id, hostname, port, rtcpPort)
return nil
}

110
mcu_janus_stream_selection.go Normal file
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/**
* Standalone signaling server for the Nextcloud Spreed app.
* Copyright (C) 2017 struktur AG
*
* @author Joachim Bauch <bauch@struktur.de>
*
* @license GNU AGPL version 3 or any later version
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package signaling
import (
"database/sql"
"fmt"
)
type streamSelection struct {
substream sql.NullInt16
temporal sql.NullInt16
audio sql.NullBool
video sql.NullBool
}
func (s *streamSelection) HasValues() bool {
return s.substream.Valid || s.temporal.Valid || s.audio.Valid || s.video.Valid
}
func (s *streamSelection) AddToMessage(message map[string]interface{}) {
if s.substream.Valid {
message["substream"] = s.substream.Int16
}
if s.temporal.Valid {
message["temporal"] = s.temporal.Int16
}
if s.audio.Valid {
message["audio"] = s.audio.Bool
}
if s.video.Valid {
message["video"] = s.video.Bool
}
}
func parseStreamSelection(payload map[string]interface{}) (*streamSelection, error) {
var stream streamSelection
if value, found := payload["substream"]; found {
switch value := value.(type) {
case int:
stream.substream.Valid = true
stream.substream.Int16 = int16(value)
case float32:
stream.substream.Valid = true
stream.substream.Int16 = int16(value)
case float64:
stream.substream.Valid = true
stream.substream.Int16 = int16(value)
default:
return nil, fmt.Errorf("Unsupported substream value: %v", value)
}
}
if value, found := payload["temporal"]; found {
switch value := value.(type) {
case int:
stream.temporal.Valid = true
stream.temporal.Int16 = int16(value)
case float32:
stream.temporal.Valid = true
stream.temporal.Int16 = int16(value)
case float64:
stream.temporal.Valid = true
stream.temporal.Int16 = int16(value)
default:
return nil, fmt.Errorf("Unsupported temporal value: %v", value)
}
}
if value, found := payload["audio"]; found {
switch value := value.(type) {
case bool:
stream.audio.Valid = true
stream.audio.Bool = value
default:
return nil, fmt.Errorf("Unsupported audio value: %v", value)
}
}
if value, found := payload["video"]; found {
switch value := value.(type) {
case bool:
stream.video.Valid = true
stream.video.Bool = value
default:
return nil, fmt.Errorf("Unsupported video value: %v", value)
}
}
return &stream, nil
}

321
mcu_janus_subscriber.go Normal file
View file

@ -0,0 +1,321 @@
/**
* Standalone signaling server for the Nextcloud Spreed app.
* Copyright (C) 2017 struktur AG
*
* @author Joachim Bauch <bauch@struktur.de>
*
* @license GNU AGPL version 3 or any later version
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package signaling
import (
"context"
"fmt"
"log"
"strconv"
"github.com/notedit/janus-go"
)
type mcuJanusSubscriber struct {
mcuJanusClient
publisher string
}
func (p *mcuJanusSubscriber) Publisher() string {
return p.publisher
}
func (p *mcuJanusSubscriber) handleEvent(event *janus.EventMsg) {
if videoroom := getPluginStringValue(event.Plugindata, pluginVideoRoom, "videoroom"); videoroom != "" {
ctx := context.TODO()
switch videoroom {
case "destroyed":
log.Printf("Subscriber %d: associated room has been destroyed, closing", p.handleId)
go p.Close(ctx)
case "event":
// Handle renegotiations, but ignore other events like selected
// substream / temporal layer.
if getPluginStringValue(event.Plugindata, pluginVideoRoom, "configured") == "ok" &&
event.Jsep != nil && event.Jsep["type"] == "offer" && event.Jsep["sdp"] != nil {
p.listener.OnUpdateOffer(p, event.Jsep)
}
case "slow_link":
// Ignore, processed through "handleSlowLink" in the general events.
default:
log.Printf("Unsupported videoroom event %s for subscriber %d: %+v", videoroom, p.handleId, event)
}
} else {
log.Printf("Unsupported event for subscriber %d: %+v", p.handleId, event)
}
}
func (p *mcuJanusSubscriber) handleHangup(event *janus.HangupMsg) {
log.Printf("Subscriber %d received hangup (%s), closing", p.handleId, event.Reason)
go p.Close(context.Background())
}
func (p *mcuJanusSubscriber) handleDetached(event *janus.DetachedMsg) {
log.Printf("Subscriber %d received detached, closing", p.handleId)
go p.Close(context.Background())
}
func (p *mcuJanusSubscriber) handleConnected(event *janus.WebRTCUpMsg) {
log.Printf("Subscriber %d received connected", p.handleId)
p.mcu.SubscriberConnected(p.Id(), p.publisher, p.streamType)
}
func (p *mcuJanusSubscriber) handleSlowLink(event *janus.SlowLinkMsg) {
if event.Uplink {
log.Printf("Subscriber %s (%d) is reporting %d lost packets on the uplink (Janus -> client)", p.listener.PublicId(), p.handleId, event.Lost)
} else {
log.Printf("Subscriber %s (%d) is reporting %d lost packets on the downlink (client -> Janus)", p.listener.PublicId(), p.handleId, event.Lost)
}
}
func (p *mcuJanusSubscriber) handleMedia(event *janus.MediaMsg) {
// Only triggered for publishers
}
func (p *mcuJanusSubscriber) NotifyReconnected() {
ctx, cancel := context.WithTimeout(context.Background(), p.mcu.mcuTimeout)
defer cancel()
handle, pub, err := p.mcu.getOrCreateSubscriberHandle(ctx, p.publisher, p.streamType)
if err != nil {
// TODO(jojo): Retry?
log.Printf("Could not reconnect subscriber for publisher %s: %s", p.publisher, err)
p.Close(context.Background())
return
}
p.handle = handle
p.handleId = handle.Id
p.roomId = pub.roomId
p.sid = strconv.FormatUint(handle.Id, 10)
p.listener.SubscriberSidUpdated(p)
log.Printf("Subscriber %d for publisher %s reconnected on handle %d", p.id, p.publisher, p.handleId)
}
func (p *mcuJanusSubscriber) Close(ctx context.Context) {
p.mu.Lock()
closed := p.closeClient(ctx)
p.mu.Unlock()
if closed {
p.mcu.SubscriberDisconnected(p.Id(), p.publisher, p.streamType)
statsSubscribersCurrent.WithLabelValues(string(p.streamType)).Dec()
}
p.mcu.unregisterClient(p)
p.listener.SubscriberClosed(p)
p.mcuJanusClient.Close(ctx)
}
func (p *mcuJanusSubscriber) joinRoom(ctx context.Context, stream *streamSelection, callback func(error, map[string]interface{})) {
handle := p.handle
if handle == nil {
callback(ErrNotConnected, nil)
return
}
waiter := p.mcu.publisherConnected.NewWaiter(getStreamId(p.publisher, p.streamType))
defer p.mcu.publisherConnected.Release(waiter)
loggedNotPublishingYet := false
retry:
join_msg := map[string]interface{}{
"request": "join",
"ptype": "subscriber",
"room": p.roomId,
}
if p.mcu.isMultistream() {
join_msg["streams"] = []map[string]interface{}{
{
"feed": streamTypeUserIds[p.streamType],
},
}
} else {
join_msg["feed"] = streamTypeUserIds[p.streamType]
}
if stream != nil {
stream.AddToMessage(join_msg)
}
join_response, err := handle.Message(ctx, join_msg, nil)
if err != nil {
callback(err, nil)
return
}
if error_code := getPluginIntValue(join_response.Plugindata, pluginVideoRoom, "error_code"); error_code > 0 {
switch error_code {
case JANUS_VIDEOROOM_ERROR_ALREADY_JOINED:
// The subscriber is already connected to the room. This can happen
// if a client leaves a call but keeps the subscriber objects active.
// On joining the call again, the subscriber tries to join on the
// MCU which will fail because he is still connected.
// To get a new Offer SDP, we have to tear down the session on the
// MCU and join again.
p.mu.Lock()
p.closeClient(ctx)
p.mu.Unlock()
var pub *mcuJanusPublisher
handle, pub, err = p.mcu.getOrCreateSubscriberHandle(ctx, p.publisher, p.streamType)
if err != nil {
// Reconnection didn't work, need to unregister/remove subscriber
// so a new object will be created if the request is retried.
p.mcu.unregisterClient(p)
p.listener.SubscriberClosed(p)
callback(fmt.Errorf("Already connected as subscriber for %s, error during re-joining: %s", p.streamType, err), nil)
return
}
p.handle = handle
p.handleId = handle.Id
p.roomId = pub.roomId
p.sid = strconv.FormatUint(handle.Id, 10)
p.listener.SubscriberSidUpdated(p)
p.closeChan = make(chan struct{}, 1)
go p.run(p.handle, p.closeChan)
log.Printf("Already connected subscriber %d for %s, leaving and re-joining on handle %d", p.id, p.streamType, p.handleId)
goto retry
case JANUS_VIDEOROOM_ERROR_NO_SUCH_ROOM:
fallthrough
case JANUS_VIDEOROOM_ERROR_NO_SUCH_FEED:
switch error_code {
case JANUS_VIDEOROOM_ERROR_NO_SUCH_ROOM:
log.Printf("Publisher %s not created yet for %s, wait and retry to join room %d as subscriber", p.publisher, p.streamType, p.roomId)
case JANUS_VIDEOROOM_ERROR_NO_SUCH_FEED:
log.Printf("Publisher %s not sending yet for %s, wait and retry to join room %d as subscriber", p.publisher, p.streamType, p.roomId)
}
if !loggedNotPublishingYet {
loggedNotPublishingYet = true
statsWaitingForPublisherTotal.WithLabelValues(string(p.streamType)).Inc()
}
if err := waiter.Wait(ctx); err != nil {
callback(err, nil)
return
}
log.Printf("Retry subscribing %s from %s", p.streamType, p.publisher)
goto retry
default:
// TODO(jojo): Should we handle other errors, too?
callback(fmt.Errorf("Error joining room as subscriber: %+v", join_response), nil)
return
}
}
//log.Println("Joined as listener", join_response)
p.session = join_response.Session
callback(nil, join_response.Jsep)
}
func (p *mcuJanusSubscriber) update(ctx context.Context, stream *streamSelection, callback func(error, map[string]interface{})) {
handle := p.handle
if handle == nil {
callback(ErrNotConnected, nil)
return
}
configure_msg := map[string]interface{}{
"request": "configure",
"update": true,
}
if stream != nil {
stream.AddToMessage(configure_msg)
}
configure_response, err := handle.Message(ctx, configure_msg, nil)
if err != nil {
callback(err, nil)
return
}
callback(nil, configure_response.Jsep)
}
func (p *mcuJanusSubscriber) SendMessage(ctx context.Context, message *MessageClientMessage, data *MessageClientMessageData, callback func(error, map[string]interface{})) {
statsMcuMessagesTotal.WithLabelValues(data.Type).Inc()
jsep_msg := data.Payload
switch data.Type {
case "requestoffer":
fallthrough
case "sendoffer":
p.deferred <- func() {
msgctx, cancel := context.WithTimeout(context.Background(), p.mcu.mcuTimeout)
defer cancel()
stream, err := parseStreamSelection(jsep_msg)
if err != nil {
go callback(err, nil)
return
}
if data.Sid == "" || data.Sid != p.Sid() {
p.joinRoom(msgctx, stream, callback)
} else {
p.update(msgctx, stream, callback)
}
}
case "answer":
p.deferred <- func() {
msgctx, cancel := context.WithTimeout(context.Background(), p.mcu.mcuTimeout)
defer cancel()
if data.Sid == "" || data.Sid == p.Sid() {
p.sendAnswer(msgctx, jsep_msg, callback)
} else {
go callback(fmt.Errorf("Answer message sid (%s) does not match subscriber sid (%s)", data.Sid, p.Sid()), nil)
}
}
case "candidate":
p.deferred <- func() {
msgctx, cancel := context.WithTimeout(context.Background(), p.mcu.mcuTimeout)
defer cancel()
if data.Sid == "" || data.Sid == p.Sid() {
p.sendCandidate(msgctx, jsep_msg["candidate"], callback)
} else {
go callback(fmt.Errorf("Candidate message sid (%s) does not match subscriber sid (%s)", data.Sid, p.Sid()), nil)
}
}
case "endOfCandidates":
// Ignore
case "selectStream":
stream, err := parseStreamSelection(jsep_msg)
if err != nil {
go callback(err, nil)
return
}
if stream == nil || !stream.HasValues() {
// Nothing to do
go callback(nil, nil)
return
}
p.deferred <- func() {
msgctx, cancel := context.WithTimeout(context.Background(), p.mcu.mcuTimeout)
defer cancel()
p.selectStream(msgctx, stream, callback)
}
default:
// Return error asynchronously
go callback(fmt.Errorf("Unsupported message type: %s", data.Type), nil)
}
}

99
publisher_stats_counter.go Normal file
View file

@ -0,0 +1,99 @@
/**
* Standalone signaling server for the Nextcloud Spreed app.
* Copyright (C) 2021 struktur AG
*
* @author Joachim Bauch <bauch@struktur.de>
*
* @license GNU AGPL version 3 or any later version
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package signaling
import (
"sync"
)
type publisherStatsCounter struct {
mu sync.Mutex
streamTypes map[StreamType]bool
subscribers map[string]bool
}
func (c *publisherStatsCounter) Reset() {
c.mu.Lock()
defer c.mu.Unlock()
count := len(c.subscribers)
for streamType := range c.streamTypes {
statsMcuPublisherStreamTypesCurrent.WithLabelValues(string(streamType)).Dec()
statsMcuSubscriberStreamTypesCurrent.WithLabelValues(string(streamType)).Sub(float64(count))
}
c.streamTypes = nil
c.subscribers = nil
}
func (c *publisherStatsCounter) EnableStream(streamType StreamType, enable bool) {
c.mu.Lock()
defer c.mu.Unlock()
if enable == c.streamTypes[streamType] {
return
}
if enable {
if c.streamTypes == nil {
c.streamTypes = make(map[StreamType]bool)
}
c.streamTypes[streamType] = true
statsMcuPublisherStreamTypesCurrent.WithLabelValues(string(streamType)).Inc()
statsMcuSubscriberStreamTypesCurrent.WithLabelValues(string(streamType)).Add(float64(len(c.subscribers)))
} else {
delete(c.streamTypes, streamType)
statsMcuPublisherStreamTypesCurrent.WithLabelValues(string(streamType)).Dec()
statsMcuSubscriberStreamTypesCurrent.WithLabelValues(string(streamType)).Sub(float64(len(c.subscribers)))
}
}
func (c *publisherStatsCounter) AddSubscriber(id string) {
c.mu.Lock()
defer c.mu.Unlock()
if c.subscribers[id] {
return
}
if c.subscribers == nil {
c.subscribers = make(map[string]bool)
}
c.subscribers[id] = true
for streamType := range c.streamTypes {
statsMcuSubscriberStreamTypesCurrent.WithLabelValues(string(streamType)).Inc()
}
}
func (c *publisherStatsCounter) RemoveSubscriber(id string) {
c.mu.Lock()
defer c.mu.Unlock()
if !c.subscribers[id] {
return
}
delete(c.subscribers, id)
for streamType := range c.streamTypes {
statsMcuSubscriberStreamTypesCurrent.WithLabelValues(string(streamType)).Dec()
}
}

0
mcu_janus_test.go → publisher_stats_counter_test.go
View file