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api.go
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package main
import (
"context"
"crypto/rand"
"encoding/json"
"fmt"
"math/big"
//"net"
"regexp"
"strconv"
"strings"
"time"
"github.com/dgrijalva/jwt-go"
"github.com/gorilla/websocket"
plogger "github.com/heytribe/go-plogger"
"github.com/heytribe/live-rabbitmqlib"
"github.com/kr/pretty"
)
// WebRTC session
type Session struct {
SocketId string `json:"socketId"` // de quel socket il s'agit : hexa a 16 char <= connexion web socket
UserId string `json:"userId"` // côté backend ils ont d'autres types d'id
}
type ApiAction struct {
Action string `json:"a"`
Data json.RawMessage `json:"d"`
}
type WsJoin struct {
Bearer string `json:"bearer"`
RoomId RoomId `json:"roomId"`
Platform string `json:"platform"`
DeviceName string `json:"deviceName"`
NetworkType string `json:"networkType"`
Version string `json:"version"` // OS or Browser version
AppVersion string `json:"appVersion"` // App Version (Tribe Version)
Orientation int `json:"orientation"`
Camera string `json:"camera"`
MaxVideoBitrate int `json:"maxVideoBitrate,omitempty"`
MaxAudioBitrate int `json:"maxAudioBitrate,omitempty"`
}
type WsJoinR struct {
SocketId string `json:"socketId"`
UserId string `json:"userId"`
RoomSize int `json:"roomSize"`
UserMediaConfiguration UMConfiguration `json:"userMediaConfiguration"`
Sessions []Session `json:"sessions"`
}
type WsReconnect struct {
SocketId string `json:"socketId"`
}
type WsResponse struct {
Action string `json:"a"`
Success bool `json:"s"`
Data json.RawMessage `json:"d,omitempty"`
}
type UMCSize struct {
Min string `json:"min,omitempty"`
Max string `json:"max,omitempty"`
Exact string `json:"exact,omitempty"`
}
type UMCVideo struct {
Width UMCSize `json:"width"`
Height UMCSize `json:"height"`
FrameRate UMCSize `json:"frameRate"`
}
type UMConfiguration struct {
Audio bool `json:"audio"`
Video UMCVideo `json:"video"`
}
type ICECandidate struct {
Candidate string `json:"candidate"`
SdpMid string `json:"sdpMid"`
SdpMLineIndex int `json:"sdpMLineIndex"`
Completed bool `json:"completed,omitempty"`
}
// {"to":"D5C51F124A06746706EC8DBB7F04A288","candidate":{"candidate":"candidate:1321500371 2 udp 1685987070 78.201.204.97 35188 typ srflx raddr 192.168.0.22 rport 35188 generation 0 ufrag fhni network-id 2 network-cost 10","sdpMid":"audio","sdpMLineIndex":0}}
type WsExchangeCandidateTo struct {
To string `json:"to"`
Candidate ICECandidate `json:"candidate"`
}
type SdpEntry struct {
Type string `json:"type"`
Sdp string `json:"sdp"`
}
type WsExchangeSdpTo struct {
To string `json:"to"`
Sdp SdpEntry `json:"sdp"`
}
type WsExchangeSdpFrom struct {
From Session `json:"from"`
Sdp SdpEntry `json:"sdp"`
}
type WsSendMessageTo struct {
To string `json:"to"`
Message json.RawMessage `json:"message"`
}
type WsSendMessageFrom struct {
From Session `json:"from"`
Message json.RawMessage `json:"message"`
}
type WsOrientationChange struct {
Orientation int `json:"orientation"`
Camera string `json:"camera"`
}
type WsEventSetAudioVideoMode struct {
From Session `json:"from"`
Audio bool `json:"audio"`
Video bool `json:"video"`
}
type WsEventSetBitrate struct {
From Session `json:"from"`
Bitrate int `json:"bitrate"`
}
type WsEventOrientationChange struct {
From Session `json:"from"`
Orientation int `json:"orientation"`
Platform string `json:"platform"`
Camera string `json:"camera"`
}
type WsEventWebrtcUp struct {
From Session `json:"from"`
}
type WsEventCpu struct {
CpuUsed int `json:"cpuUsed"`
}
type WsEventNetworkChange struct {
NetworkType string `json:"networkType"`
}
type RmqResponse struct {
Success bool `json:"s"`
Error int `json:"e,omitempty"`
Data json.RawMessage `json:"d"`
}
type RmqRoomJoinEvent struct {
RoomId RoomId `json:"roomId"`
RoomSize int `json:"roomSize"`
SocketId string `json:"socketId"`
UserId string `json:"userId"`
Platform string `json:"platform"`
DeviceName string `json:"deviceName"`
NetworkType string `json:"networkType"`
AppVersion string `json:"appVersion"`
Version string `json:"version"`
Ip string `json:"ip"`
Bitrate int `json:"bitrate"`
}
type RmqRoomLeaveEvent struct {
RoomId RoomId `json:"roomId"`
RoomSize int `json:"roomSize"`
SocketId string `json:"socketId"`
UserId string `json:"userId"`
}
type RmqWebrtcPingEvent struct {
SocketId string `json:"socketId"`
}
type RmqBitrateChangeEvent struct {
SocketId string `json:"socketId"`
Type string `json:"type"`
Bitrate int `json:"bitrate"`
}
type RmqFreezeEvent struct {
SocketId string `json:"socketId"`
}
type RmqCpuEvent struct {
SocketId string `json:"socketId"`
CpuUsed int `json:"cpuUsed"`
}
type RmqNetworkChangeEvent struct {
SocketId string `json:"socketId"`
NetworkType string `json:"networkType"`
}
func generateSliceRand(n int) (b []byte) {
for i := 0; i < n; i++ {
var max *big.Int
max = big.NewInt(256)
n, _ := rand.Int(rand.Reader, max)
b = append(b, byte(n.Int64()))
}
return
}
func jsonError(err error) []byte {
return []byte(`{"error":"` + err.Error() + `"}`)
}
func buildJsonError(action string, code int) []byte {
return []byte(fmt.Sprintf(`{"a":"%sR","s":false,"e":%d}`, action, code))
}
// eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJ1c2VySWQiOiIxZTNvZERxUGZ1IiwiY2xpZW50SWQiOiJjb20udHJpYmVpbmMudHJpYmUiLCJpYXQiOjE0ODgyOTQ2MjAsImV4cCI6MTQ4ODI5ODIyMH0.Gd8bi4HZbnQOMY3ScfLHkzYWOHcUMQle-wIy31MLmyE
func checkAuth(ctx context.Context, roomId RoomId, tokenString string) (userId string, err error) {
log := plogger.FromContextSafe(ctx).Tag("api")
ctx = plogger.NewContext(ctx, log)
hmacSecret := []byte(config.JWTSecret)
token, err := jwt.Parse(tokenString, func(token *jwt.Token) (interface{}, error) {
if _, ok := token.Method.(*jwt.SigningMethodHMAC); !ok {
err := fmt.Errorf("Unexpected signing method: %v", token.Header["alg"])
log.Errorf(err.Error())
return nil, err
}
return hmacSecret, nil
})
if err != nil {
log.OnError(err, "cannot parse JWT token: %s", tokenString)
return
}
if claims, ok := token.Claims.(jwt.MapClaims); ok && token.Valid {
// Checking if token is valid
//expirationTime := time.Unix(claims["exp"], 0)
//if expirationTime.Before(time.Now())
log.Infof("Token is valid, userId is %s\n", claims["userId"])
userId = claims["userId"].(string)
return
}
log.Infof("Token %s is not valid or expired", tokenString)
return
}
func join(ctx context.Context, c *connection, a string, wsJ WsJoin) (jsonAnswer []byte) {
var wsR WsResponse
var wsJR WsJoinR
var err error
log := plogger.FromContextSafe(ctx).Tag("api")
ctx = plogger.NewContext(ctx, log)
// Avoid multiple join on the same socketId
c.joinMutex.Lock(ctx)
defer func() {
c.joinMutex.Unlock(ctx)
}()
// Test if user has already join
if c.userId != "" {
log.Errorf("[ ERROR ] Join room twice on roomId (%s) userId (%s)", c.roomId, c.userId)
jsonAnswer = buildJsonError(a, ERROR_CODE_ROOM_ALREADY_JOINED)
return
}
// Check Auth (bearer + RoomId)
userId, err := checkAuth(ctx, wsJ.RoomId, wsJ.Bearer)
if log.OnError(err, "Room join permission denied for bearer '%s' and roomId '%s'", wsJ.Bearer, wsJ.RoomId) {
jsonAnswer = buildJsonError(a, ERROR_CODE_AUTH_FAILED)
return
}
c.userId = userId
c.roomId = wsJ.RoomId
c.platform = wsJ.Platform
c.deviceName = wsJ.DeviceName
c.networkType = wsJ.NetworkType
c.version = wsJ.Version
c.appVersion = wsJ.AppVersion
c.orientation = wsJ.Orientation
c.camera = wsJ.Camera
room := rooms.Get(ctx, wsJ.RoomId)
if room != nil {
if len(room.connections) > 7 {
jsonAnswer = buildJsonError(a, ERROR_CODE_ROOM_IS_FULL)
return
}
}
if wsJ.MaxVideoBitrate != 0 {
c.maxVideoBitrate = wsJ.MaxVideoBitrate
} else {
c.maxVideoBitrate = config.Bitrates.Video.Max
}
if wsJ.MaxAudioBitrate != 0 {
c.maxAudioBitrate = wsJ.MaxAudioBitrate
} else {
c.maxAudioBitrate = config.Bitrates.Audio.Max
}
log.OnError(err, "maxVideoBitrate is %d", c.maxVideoBitrate)
log.OnError(err, "maxAudioBitrate is %d", c.maxAudioBitrate)
rooms.Lock(ctx)
room = rooms.Data[wsJ.RoomId]
if room == nil {
room = NewRoom()
room.Lock(ctx)
rooms.Data[wsJ.RoomId] = room
rooms.Unlock(ctx)
} else {
room.Lock(ctx)
rooms.Unlock(ctx)
}
// Count all peers connected to the room Id and
// append this connection to rooms sent back to the browser
var roomSize int
for _, conn := range room.connections {
var s Session
s.SocketId = conn.socketId
s.UserId = conn.userId
wsJR.Sessions = append(wsJR.Sessions, s)
roomSize++
}
room.connections = append(room.connections, c)
room.Unlock(ctx)
wsJR.UserId = userId
wsJR.RoomSize = roomSize
if wsJR.Sessions == nil {
wsJR.Sessions = []Session{}
}
var rmqRE RmqRoomJoinEvent
rmqRE.RoomId = wsJ.RoomId
rmqRE.RoomSize = roomSize + 1
rmqRE.SocketId = c.socketId
rmqRE.UserId = c.userId
rmqRE.Platform = c.platform
rmqRE.DeviceName = c.deviceName
rmqRE.NetworkType = c.networkType
rmqRE.AppVersion = c.appVersion
rmqRE.Version = c.version
rmqRE.Ip = c.ip
rmqRE.Bitrate = c.maxVideoBitrate
var j []byte
j, err = json.Marshal(&rmqRE)
if log.OnError(err, "can't marshal interface %#v", rmqRE) {
jsonAnswer = buildJsonError(a, ERROR_CODE_JSON)
return
}
err = rmq.EventMessageSend(liverabbitmq.LiveEvents, liverabbitmq.LiveEventRoomJoinRK, j)
log.OnError(err, "couldn't send event message '%s' to exchange %s", j, liverabbitmq.LiveEvents)
var umConfiguration UMConfiguration
var maxWidth int
var maxHeight int
if roomSize > 1 {
if roomSize > 2 {
maxWidth = 640 / 2
} else {
maxWidth = 640
}
maxHeight = 580 / ((roomSize + (roomSize % 2)) / 2)
} else {
maxWidth = 640
maxHeight = 580
}
minWidthStr := strconv.Itoa(maxWidth / 3)
minHeightStr := strconv.Itoa(maxHeight / 3)
maxWidthStr := strconv.Itoa(maxWidth)
maxHeightStr := strconv.Itoa(maxHeight)
umConfiguration.Audio = true
umConfiguration.Video.Width.Min = minWidthStr
umConfiguration.Video.Width.Max = maxWidthStr
//umConfiguration.Video.Width.Min = "0"
//umConfiguration.Video.Width.Max = "1280"
umConfiguration.Video.Height.Min = minHeightStr
umConfiguration.Video.Height.Max = maxHeightStr
//umConfiguration.Video.Height.Min = "0"
//umConfiguration.Video.Height.Max = "1024"
umConfiguration.Video.FrameRate.Min = "10"
umConfiguration.Video.FrameRate.Max = "30"
// Send eventUserMediaConfiguration to all peers of the roomId if there is more than 2 people
// And update the map hash
if roomSize > 0 {
var apiA ApiAction
apiA.Action = `eventUserMediaConfiguration`
room := rooms.Get(ctx, wsJ.RoomId)
if room == nil {
jsonAnswer = buildJsonError(a, ERROR_CODE_SYSTEM)
return
}
room.RLock(ctx)
for _, conn := range room.connections {
if conn.socketId != c.socketId {
j, err = json.Marshal(&umConfiguration)
if log.OnError(err, "can't marshal interface %#v", umConfiguration) {
log.Infof("can't send eventUserMediaConfiguration event...")
} else {
apiA.Data = j
var jsonE []byte
jsonE, err = json.Marshal(&apiA)
if log.OnError(err, "can't marshal interface %#v", apiA) {
log.Infof("can't send eventUserMediaConfiguration event...")
} else {
if err := conn.write(ctx, websocket.TextMessage, jsonE); err != nil {
log.Infof("can't send eventUserMediaConfiguration event %s: %s", string(jsonE), err)
}
}
}
log.Infof("calling eventOrientationChange from (%s/%s) to %s, with orientation %d, platform %s, camera %s", conn.socketId, conn.userId, c.socketId, conn.orientation, conn.platform, conn.camera)
eventOrientationChangeSingle(ctx, conn.socketId, conn.userId, conn.roomId, c.socketId, conn.orientation, conn.platform, conn.camera)
}
}
room.RUnlock(ctx)
}
// Send eventOrientationChange to all peers of the roomId if there is more than 2 people
if roomSize > 0 {
log.Infof("eventOrientationChange called")
eventOrientationChange(ctx, c.socketId, c.userId, c.roomId, c.orientation, c.platform, c.camera)
}
wsJR.UserMediaConfiguration = umConfiguration
wsJR.SocketId = c.socketId
j, err = json.Marshal(&wsJR)
if log.OnError(err, "can't marshal interface %#v", wsJR) {
jsonAnswer = buildJsonError(a, ERROR_CODE_JSON)
return
}
wsR.Action = a + `R`
wsR.Success = true
wsR.Data = json.RawMessage(j)
jsonAnswer, err = json.Marshal(&wsR)
if log.OnError(err, "can't marshal interface %#v", wsR) {
jsonAnswer = buildJsonError(a, ERROR_CODE_JSON)
return
}
return
}
func reconnect(ctx context.Context, c *connection, a string, wsRE WsReconnect) (jsonAnswer []byte) {
var wsR WsResponse
var err error
log := plogger.FromContextSafe(ctx).Tag("api")
ctx = plogger.NewContext(ctx, log)
cSrc := hub.socketIds.Get(ctx, wsRE.SocketId)
if cSrc == nil {
log.Infof("socketId %s does not exist anymore, could not reconnect the websocket")
jsonAnswer = buildJsonError(a, ERROR_CODE_SOCKETID_DOES_NOT_EXIST)
return
}
c.copy(cSrc)
hub.socketIds.Lock(ctx)
delete(hub.socketIds.Data, c.socketId)
hub.socketIds.Data[c.socketId] = c
cSrc.state = `reconnected`
hub.socketIds.Unlock(ctx)
wsR.Action = a + `R`
wsR.Success = true
wsR.Data = nil
jsonAnswer, err = json.Marshal(&wsR)
if log.OnError(err, "can't marshal interface %#v", wsR) {
jsonAnswer = buildJsonError(a, ERROR_CODE_JSON)
return
}
go retransmitMessages(ctx, c)
return
}
func retransmitMessages(ctx context.Context, c *connection) {
log := plogger.FromContextSafe(ctx).Tag("api")
ctx = plogger.NewContext(ctx, log)
for _, d := range c.wsDataToRetransmit {
err := c.write(ctx, websocket.TextMessage, d)
log.OnError(err, "could not retransmit message %s to new websocket", string(d))
}
c.wsDataToRetransmit = [][]byte{}
}
func exchangeICECandidateDelayed(ctx context.Context, c *connection, wsECT WsExchangeCandidateTo) {
log := plogger.FromContextSafe(ctx).Tag("api")
ctx = plogger.NewContext(ctx, log)
time.Sleep(1 * time.Second)
if wsECT.To == `publisher` {
log.Infof("Received trickle candidate %#v", wsECT.Candidate)
} else {
log.Infof("Received trickle candidate %#v", wsECT.Candidate)
}
}
func exchangeICECandidate(ctx context.Context, c *connection, a string, wsECT WsExchangeCandidateTo) (jsonAnswer []byte) {
var wsR WsResponse
var err error
log := plogger.FromContextSafe(ctx).Tag("api")
ctx = plogger.NewContext(ctx, log)
// Need to replace by saving typ relay and send it at the end
if wsECT.Candidate.Completed == true {
return
}
/* Routed mode */
if c.platform != `Web` && strings.Contains(wsECT.Candidate.Candidate, `typ relay`) {
go exchangeICECandidateDelayed(ctx, c, wsECT)
} else {
if wsECT.To == `publisher` {
// "candidate":"candidate:288186024 1 udp 41885951 35.185.68.52 12966 typ relay raddr 0.0.0.0 rport 0 generation 0 ufrag ouDD network-id 1 network-cost 10
// If the candidate type is relay, buffer it, we want to send it after all other candidates
/*err = c.j.trickle(`publisher`, wsECT.Candidate)
if logOnError(err, "cannot send ICE candidate to Janus with %s", wsECT.Candidate) {
jsonAnswer = buildJsonError(a, ERROR_CODE_JANUS_TRICKLE_ICE)
return
}*/
log.Infof("Received ICE Candidate trickle %#v", wsECT.Candidate)
} else {
//cDst := hub.socketIds[wsECT.To]
/*err = c.j.trickle(wsECT.To, wsECT.Candidate)
if logOnError(err, "cannot send ICE candidate to Janus with %s", wsECT.Candidate) {
jsonAnswer = buildJsonError(a, ERROR_CODE_JANUS_TRICKLE_ICE)
return
}*/
log.Infof("Received ICE Candidate trickle %#v", wsECT.Candidate)
}
}
wsR.Action = a + `R`
wsR.Success = true
wsR.Data = nil
jsonAnswer, err = json.Marshal(&wsR)
if log.OnError(err, "can't marshal interface %#v", wsR) {
jsonAnswer = buildJsonError(a, ERROR_CODE_JSON)
return
}
return
}
func setMediaBitrateInSdp(ctx context.Context, sdp string, media string, bitrate int) (newSdp string) {
log := plogger.FromContextSafe(ctx).Tag("api")
ctx = plogger.NewContext(ctx, log)
str := fmt.Sprintf(`(m=%s[^\n]+\n(?:[cib]=[^\n]+\n)*)`, media)
re, err := regexp.Compile(str)
if log.OnError(err, "cannot compile regexp %s", str) {
return
}
bitrateSdp := fmt.Sprintf("b=AS:%d\r\n", bitrate)
newSdp = re.ReplaceAllString(sdp, "${1}"+bitrateSdp)
if newSdp == "" {
log.Infof("session description (SDP) is not a valid one, no m=%s found", media)
return
}
return
}
func exchangeSdp(ctx context.Context, c *connection, a string, wsEST WsExchangeSdpTo) []byte {
var wsR WsResponse
var s *Room
var jsonAnswer []byte
var err error
log := plogger.FromContextSafe(ctx).Tag("api")
ctx = plogger.NewContext(ctx, log)
s = rooms.Get(ctx, c.roomId)
if s == nil {
return buildJsonError(a, ERROR_CODE_SESSION)
}
if len(s.connections) == 0 {
log.Infof("Race condition hit, there are no peers connected on this room, skipping message")
return buildJsonError(a, ERROR_CODE_ROOM_EMPTY)
}
if wsEST.To == `publisher` {
// we don't handle sdp renegociation yet.
// first: we need to ensure that no webRTCSession publisher was already established
// if established => return an error
c.negoSdpMutex.Lock(ctx)
if c.webRTCSessionPublisher != nil {
c.negoSdpMutex.Unlock(ctx)
return buildJsonError(a, ERROR_CODE_SDP_ALREADY_NEGOCIATED)
}
//
// A Publisher sends us an offer, we need to answer
//
sdpCtx := NewSdpCtx()
sdpCtx.offer, err = parseSDP(ctx, wsEST.Sdp.Sdp)
if log.OnError(err, "[ error ] SDP session decode error : %s") {
c.negoSdpMutex.Unlock(ctx)
return buildJsonError(a, ERROR_CODE_SDP_DECODE)
}
webRTCSession, err := NewWebRTCSession(ctx, WebRTCModePublisher, sdpCtx)
if log.OnError(err, "could not create a new WebRTC Session") {
c.negoSdpMutex.Unlock(ctx)
return buildJsonError(a, ERROR_CODE_NETWORK)
}
var sdpAnswer string
var preferredCodecOption CodecOptions
preferredCodecOption = CodecH264
if features.IsActive(ctx, "forcecodec") {
switch features.GetVariant(ctx, "forcecodec") {
case "VP8":
preferredCodecOption = CodecVP8
case "H264":
preferredCodecOption = CodecH264
}
}
sdpAnswer, _ = sdpCtx.answerSDP(ctx, preferredCodecOption, webRTCSession.listenPort)
webRTCSession.CreateStunCtx(ctx)
c.webRTCSessionPublisher = webRTCSession
c.negoSdpMutex.Unlock(ctx)
go webRTCSession.serveWebRTC(ctx, c, nil)
log.Debugf("[ DEBUG ] ------------------------------------")
log.Debugf("[ DEBUG ] PUBLISHER SDP ANSWER :\n%s", pretty.Formatter(sdpAnswer))
log.Debugf("[ DEBUG ] ------------------------------------")
err = eventExchangeSdp(ctx, `publisher`, ``, c.socketId, `answer`, sdpAnswer)
if log.OnError(err, "[ error ] could not sent eventExchangeSdp to `publisher` from socketId %s with %s", c.socketId, sdpAnswer) {
return buildJsonError(a, ERROR_CODE_EVENT)
}
} else {
log.Debugf("[ DEBUG ] ------------------------------------")
log.Debugf("[ DEBUG ] LISTENER SDP ANSWER :\n%s", wsEST.Sdp.Sdp)
log.Debugf("[ DEBUG ] ------------------------------------")
cDst := hub.socketIds.Get(ctx, wsEST.To)
webRTCSessionListener := c.webRTCSessionListeners.Get(wsEST.To)
webRTCSessionPublisher := cDst.webRTCSessionPublisher
webRTCSessionListener.sdpCtx.answer, err = parseSDP(ctx, wsEST.Sdp.Sdp)
webRTCSessionListener.CreateStunCtx(ctx)
if log.OnError(err, "[ error ] SDP session decode error : %s") {
return buildJsonError(a, ERROR_CODE_SDP_DECODE)
}
//cDst.webRTCSessionListeners.Set(c.socketId, webRTCSessionListener)
// Set max Video Bitrate for the session with current user Number
//roomSize := rooms.GetSize()
maxVideoBitrate := c.maxVideoBitrate /* / (roomSize + (roomSize % 2)) */
log.Warnf("SET MAXVIDEOBITRATE DURING EXCHANGESDP TO %d", maxVideoBitrate)
webRTCSessionListener.SetMaxVideoBitrate(maxVideoBitrate)
// using saved udpConn & sdpSession
go webRTCSessionListener.serveWebRTC(ctx, c, webRTCSessionPublisher)
}
wsR.Action = a + `R`
wsR.Success = true
wsR.Data = nil
jsonAnswer, err = json.Marshal(&wsR)
if log.OnError(err, "can't marshal interface %#v", wsR) {
return buildJsonError(a, ERROR_CODE_JSON)
}
return jsonAnswer
}
func sendMessage(ctx context.Context, c *connection, a string, wsSMT WsSendMessageTo) (jsonAnswer []byte) {
var wsSMF WsSendMessageFrom
var wsR WsResponse
log := plogger.FromContextSafe(ctx).Tag("api")
ctx = plogger.NewContext(ctx, log)
wsSMF.From.SocketId = c.socketId
wsSMF.From.UserId = c.userId
wsSMF.Message = wsSMT.Message
j, err := json.Marshal(&wsSMF)
if log.OnError(err, "can't marshal interface %#v", wsSMF) {
jsonAnswer = buildJsonError(a, ERROR_CODE_JSON)
return
}
var apiA ApiAction
apiA.Action = `eventMessage`
apiA.Data = j
j2, err := json.Marshal(&apiA)
if log.OnError(err, "can't marshal interface %#v", apiA) {
jsonAnswer = buildJsonError(a, ERROR_CODE_JSON)
return
}
cDst := hub.socketIds.Get(ctx, wsSMT.To)
if cDst != nil {
cDst.write(ctx, websocket.TextMessage, j2)
} else {
log.Infof("socketId requested doesn't exist, skipping message")
jsonAnswer = buildJsonError(a, ERROR_CODE_SOCKET_ID_DOES_NOT_EXIST)
return
}
wsR.Action = a + `R`
wsR.Success = true
wsR.Data = nil
jsonAnswer, err = json.Marshal(&wsR)
if log.OnError(err, "can't marshal interface %#v", wsR) {
jsonAnswer = buildJsonError(a, ERROR_CODE_JSON)
return
}
return
}
func orientationChange(ctx context.Context, c *connection, a string, wsOC WsOrientationChange) (jsonAnswer []byte) {
var wsR WsResponse
var err error
log := plogger.FromContextSafe(ctx).Tag("api")
ctx = plogger.NewContext(ctx, log)
eventOrientationChange(ctx, c.socketId, c.userId, c.roomId, wsOC.Orientation, c.platform, wsOC.Camera)
wsR.Action = a + `R`
wsR.Success = true
wsR.Data = nil
jsonAnswer, err = json.Marshal(&wsR)
if log.OnError(err, "can't marshal interface %#v", wsR) {
jsonAnswer = buildJsonError(a, ERROR_CODE_JSON)
return
}
return
}
func eventExchangeSdp(ctx context.Context, socketId string, userId string, to string, sdpType string, sdp string) (err error) {
var wsESF WsExchangeSdpFrom
var jsonRequest []byte
log := plogger.FromContextSafe(ctx).Tag("api")
ctx = plogger.NewContext(ctx, log)
cDst := hub.socketIds.Get(ctx, to)
if cDst == nil {
log.Infof("hub.socketIds[%s] is nil, could not send this eventExchangeSdp...", to)
return
}
s := rooms.Get(ctx, cDst.roomId)
if s == nil {
log.Infof("session on roomId %s doesn't exist anymore, probably eventLeave has been called before", cDst.roomId)
return
}
if len(s.connections) == 0 {
log.Infof("Race condition hit, there is no peers connected on this room, skipping message")
return
}
//newSdp := setMediaBitrateInSdp(sdp, `audio`, cDst.maxAudioBitrate / 1000)
wsESF.From.SocketId = socketId
wsESF.From.UserId = userId
wsESF.Sdp.Type = sdpType
wsESF.Sdp.Sdp = sdp
jsonRequest, err = json.Marshal(&wsESF)
if log.OnError(err, "can't marshal interface %#v", wsESF) {
return
}
var apiA ApiAction
apiA.Action = `eventExchangeSdp`
apiA.Data = jsonRequest
j2, err := json.Marshal(&apiA)
if log.OnError(err, "can't marshal interface %#v", apiA) {
return
}
if cDst != nil {
log.Infof("[ DEBUG ] sending exchange SDP %s", j2)
cDst.write(ctx, websocket.TextMessage, j2)
} else {
log.Infof("socketId requested doesn't exist, skipping message")
return
}
return
}
func eventLeave(ctx context.Context, c *connection) {
var apiA ApiAction
var rmqWsRLE RmqRoomLeaveEvent
var roomSize int
log := plogger.FromContextSafe(ctx).Tag("api")
ctx = plogger.NewContext(ctx, log)
room := rooms.Get(ctx, c.roomId)
if room == nil {
log.Warnf("[ ERROR eventLeave ] rooms.Get(%s) == nil", c.roomId)
return
}
// remove listeners pipelines & remove the connection from the room
room.Lock(ctx)
if c.webRTCSessionPublisher != nil {
for i := 0; i < len(room.connections); i++ {
c.webRTCSessionPublisher.disconnectListener(ctx, room.connections[i], c)
}
} else {
log.Errorf("cannot disconnect listeners, missing webRTCSessionPublisher")
}
removedConn := room.Remove(ctx, c.socketId)
if removedConn == nil {
log.Errorf("websocket %s wasn't removed from room %s", c.socketId, c.roomId)
}
room.Unlock(ctx)
apiA.Action = `eventLeave`
rmqWsRLE.RoomId = c.roomId
rmqWsRLE.RoomSize = roomSize
rmqWsRLE.SocketId = c.socketId
rmqWsRLE.UserId = c.userId
j, err := json.Marshal(&rmqWsRLE)
if log.OnError(err, "can't marshal interface %#v", rmqWsRLE) {
return
}
apiA.Data = j
j2, err := json.Marshal(&apiA)
if log.OnError(err, "can't marshal interface %#v", apiA) {
return
}
room = rooms.Get(ctx, c.roomId)
if room == nil {
log.Warnf("[ error ] session doesn't exist anymore for roomId %s, abort sending eventLeave", c.roomId)
return
}
room.RLock(ctx)
if room != nil {
for _, c := range room.connections {
c.write(ctx, websocket.TextMessage, j2)
//roomSize := rooms.GetSize()
maxVideoBitrate := c.maxVideoBitrate /* / (roomSize + (roomSize % 2)) */
c.webRTCSessionListeners.RLock()
for _, w := range c.webRTCSessionListeners.d {
w.(*WebRTCSession).SetMaxVideoBitrate(maxVideoBitrate)
}
c.webRTCSessionListeners.RUnlock()
}
}
room.RUnlock(ctx)
err = rmq.EventMessageSend(liverabbitmq.LiveEvents, liverabbitmq.LiveEventRoomLeaveRK, j)
log.OnError(err, "couldn't send event message '%s' to exchange %s", j, liverabbitmq.LiveEvents)
if len(room.connections) == 0 {
log.Infof("room %s is empty => delete", c.roomId)
rooms.Delete(ctx, c.roomId)
}
var umConfiguration UMConfiguration
var maxWidth int
var maxHeight int
if roomSize > 1 {
if roomSize > 2 {
maxWidth = 480 / 2
} else {
maxWidth = 480
}
maxHeight = 360 / ((roomSize + (roomSize % 2)) / 2)
} else {
maxWidth = 480
maxHeight = 360
}
minWidthStr := strconv.Itoa(maxWidth / 3)
minHeightStr := strconv.Itoa(maxHeight / 3)
maxWidthStr := strconv.Itoa(maxWidth)
maxHeightStr := strconv.Itoa(maxHeight)
umConfiguration.Audio = true
umConfiguration.Video.Width.Min = minWidthStr
umConfiguration.Video.Width.Max = maxWidthStr
umConfiguration.Video.Height.Min = minHeightStr
umConfiguration.Video.Height.Max = maxHeightStr
umConfiguration.Video.FrameRate.Min = "10"
umConfiguration.Video.FrameRate.Max = "25"
// Send eventUserMediaConfiguration to all peers of the roomId if there is more than 2 people
// And update the map hash
if roomSize > 1 {
var apiA ApiAction
apiA.Action = `eventUserMediaConfiguration`
room.RLock(ctx)
for _, conn := range room.connections {
j, err = json.Marshal(&umConfiguration)
if log.OnError(err, "can't marshal interface %#v", umConfiguration) {
log.Infof("can't send eventUserMediaConfiguration event...")
} else {
apiA.Data = j
var jsonE []byte
jsonE, err = json.Marshal(&apiA)
if log.OnError(err, "can't marshal interface %#v", apiA) {
log.Infof("can't send eventUserMediaConfiguration event...")
} else {
if err := conn.write(ctx, websocket.TextMessage, jsonE); err != nil {
log.Infof("can't send eventUserMediaConfiguration event %s: %s", string(jsonE), err)
}
}
}
}
room.RUnlock(ctx)
}
return
}
func eventSetAudioVideoMode(ctx context.Context, socketId string, userId string, to string, audio bool, video bool) (err error) {
var wsESAVM WsEventSetAudioVideoMode
var jsonRequest []byte
log := plogger.FromContextSafe(ctx).Tag("api")
ctx = plogger.NewContext(ctx, log)
wsESAVM.From.SocketId = socketId
wsESAVM.From.UserId = userId
wsESAVM.Audio = audio
wsESAVM.Video = video
jsonRequest, err = json.Marshal(&wsESAVM)
if log.OnError(err, "can't marshal interface %#v", wsESAVM) {
return
}
var apiA ApiAction
if socketId == `publisher` {
apiA.Action = `eventSetLocalAudioVideoMode`
} else {
apiA.Action = `eventSetRemoteAudioVideoMode`
}
apiA.Data = jsonRequest
j2, err := json.Marshal(&apiA)
if log.OnError(err, "can't marshal interface %#v", apiA) {
return
}
log.Infof("EVENT SET AUDIO VIDEO MODE TO %s SEND: %s", to, j2)
cDst := hub.socketIds.Get(ctx, to)
if cDst != nil {
cDst.write(ctx, websocket.TextMessage, j2)
} else {
log.Infof("socketId requested doesn't exist, skipping message")
return
}
return
}
func eventSetBitrate(ctx context.Context, socketId string, userId string, to string, bitrate int) (err error) {
var wsESB WsEventSetBitrate
var jsonRequest []byte
log := plogger.FromContextSafe(ctx).Tag("api")
ctx = plogger.NewContext(ctx, log)
wsESB.From.SocketId = socketId
wsESB.From.UserId = userId
wsESB.Bitrate = bitrate
jsonRequest, err = json.Marshal(&wsESB)
if log.OnError(err, "can't marshal interface %#v", wsESB) {
return
}
var apiA ApiAction
apiA.Action = `eventSetBitrate`
apiA.Data = jsonRequest
j2, err := json.Marshal(&apiA)
if log.OnError(err, "can't marshal interface %#v", apiA) {
return
}
cDst := hub.socketIds.Get(ctx, socketId)
if cDst != nil {
cDst.write(ctx, websocket.TextMessage, j2)
} else {
log.Infof("socketId requested doesn't exist, skipping message")
return
}
return
}
func eventOrientationChangeSingle(ctx context.Context, socketId string, userId string, roomId RoomId, to string, orientation int, platform string, camera string) (jsonAnswer []byte) {
var wsEOC WsEventOrientationChange
log := plogger.FromContextSafe(ctx).Tag("api")
ctx = plogger.NewContext(ctx, log)
wsEOC.From.SocketId = socketId
wsEOC.From.UserId = userId
wsEOC.Orientation = orientation