mirror of
https://github.com/jech/galene.git
synced 2024-12-27 01:35:48 +01:00
Initial commit.
This commit is contained in:
Juliusz Chroboczek
commit
f5a518a448
12 changed files with 2454 additions and 0 deletions
841
client.go
Normal file
841
client.go
Normal file
|
|
@ -0,0 +1,841 @@
|
|||
// Copyright (c) 2020 by Juliusz Chroboczek.
|
||||
|
||||
// This is not open source software. Copy it, and I'll break into your
|
||||
// house and tell your three year-old that Santa doesn't exist.
|
||||
|
||||
package main
|
||||
|
||||
import (
|
||||
"encoding/json"
|
||||
"errors"
|
||||
"io"
|
||||
"log"
|
||||
"math"
|
||||
"os"
|
||||
"sync"
|
||||
"sync/atomic"
|
||||
"time"
|
||||
|
||||
"github.com/gorilla/websocket"
|
||||
"github.com/pion/rtcp"
|
||||
"github.com/pion/sdp"
|
||||
"github.com/pion/webrtc/v2"
|
||||
)
|
||||
|
||||
var iceConf webrtc.Configuration
|
||||
var iceOnce sync.Once
|
||||
|
||||
func iceConfiguration() webrtc.Configuration {
|
||||
iceOnce.Do(func() {
|
||||
var iceServers []webrtc.ICEServer
|
||||
file, err := os.Open(iceFilename)
|
||||
if err != nil {
|
||||
log.Printf("Open %v: %v", iceFilename, err)
|
||||
return
|
||||
}
|
||||
defer file.Close()
|
||||
d := json.NewDecoder(file)
|
||||
err = d.Decode(&iceServers)
|
||||
if err != nil {
|
||||
log.Printf("Get ICE configuration: %v", err)
|
||||
return
|
||||
}
|
||||
iceConf = webrtc.Configuration{
|
||||
ICEServers: iceServers,
|
||||
}
|
||||
})
|
||||
|
||||
return iceConf
|
||||
}
|
||||
|
||||
type protocolError string
|
||||
|
||||
func (err protocolError) Error() string {
|
||||
return string(err)
|
||||
}
|
||||
|
||||
func errorToWSCloseMessage(err error) []byte {
|
||||
var code int
|
||||
var text string
|
||||
switch e := err.(type) {
|
||||
case *websocket.CloseError:
|
||||
code = websocket.CloseNormalClosure
|
||||
case protocolError:
|
||||
code = websocket.CloseProtocolError
|
||||
text = string(e)
|
||||
default:
|
||||
code = websocket.CloseInternalServerErr
|
||||
}
|
||||
return websocket.FormatCloseMessage(code, text)
|
||||
}
|
||||
|
||||
func isWSNormalError(err error) bool {
|
||||
return websocket.IsCloseError(err,
|
||||
websocket.CloseNormalClosure,
|
||||
websocket.CloseGoingAway)
|
||||
}
|
||||
|
||||
type clientMessage struct {
|
||||
Type string `json:"type"`
|
||||
Id string `json:"id,omitempty"`
|
||||
Username string `json:"username,omitempty"`
|
||||
Password string `json:"password,omitempty"`
|
||||
Group string `json:"group,omitempty"`
|
||||
Value string `json:"value,omitempty"`
|
||||
Me *bool `json:"me,omitempty"`
|
||||
Offer *webrtc.SessionDescription `json:"offer,omitempty"`
|
||||
Answer *webrtc.SessionDescription `json:"answer,omitempty"`
|
||||
Candidate *webrtc.ICECandidateInit `json:"candidate,omitempty"`
|
||||
Del bool `json:"del,omitempty"`
|
||||
AudioRate int `json:"audiorate,omitempty"`
|
||||
VideoRate int `json:"audiorate,omitempty"`
|
||||
}
|
||||
|
||||
type closeMessage struct {
|
||||
data []byte
|
||||
}
|
||||
|
||||
func startClient(conn *websocket.Conn) (err error) {
|
||||
var m clientMessage
|
||||
err = conn.ReadJSON(&m)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
if m.Type != "handshake" {
|
||||
err = protocolError("expected handshake")
|
||||
return
|
||||
}
|
||||
|
||||
c := &client{
|
||||
id: m.Id,
|
||||
username: m.Username,
|
||||
actionCh: make(chan interface{}, 10),
|
||||
done: make(chan struct{}),
|
||||
}
|
||||
|
||||
defer close(c.done)
|
||||
|
||||
c.writeCh = make(chan interface{}, 1)
|
||||
defer func() {
|
||||
if isWSNormalError(err) {
|
||||
err = nil
|
||||
} else {
|
||||
select {
|
||||
case c.writeCh <- closeMessage{
|
||||
errorToWSCloseMessage(err),
|
||||
}:
|
||||
case <-c.writerDone:
|
||||
}
|
||||
}
|
||||
close(c.writeCh)
|
||||
c.writeCh = nil
|
||||
}()
|
||||
|
||||
c.writerDone = make(chan struct{})
|
||||
go clientWriter(conn, c.writeCh, c.writerDone)
|
||||
|
||||
g, users, err := addClient(m.Group, c)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
c.group = g
|
||||
defer delClient(c)
|
||||
|
||||
for _, u := range users {
|
||||
c.write(clientMessage{
|
||||
Type: "user",
|
||||
Id: u.id,
|
||||
Username: u.username,
|
||||
})
|
||||
}
|
||||
|
||||
clients := g.getClients(nil)
|
||||
u := clientMessage{
|
||||
Type: "user",
|
||||
Id: c.id,
|
||||
Username: c.username,
|
||||
}
|
||||
for _, c := range clients {
|
||||
c.write(u)
|
||||
}
|
||||
|
||||
defer func() {
|
||||
clients := g.getClients(c)
|
||||
u := clientMessage{
|
||||
Type: "user",
|
||||
Id: c.id,
|
||||
Username: c.username,
|
||||
Del: true,
|
||||
}
|
||||
for _, c := range clients {
|
||||
c.write(u)
|
||||
}
|
||||
}()
|
||||
|
||||
return clientLoop(c, conn)
|
||||
}
|
||||
|
||||
func getUpConn(c *client, id string) *upConnection {
|
||||
c.group.mu.Lock()
|
||||
defer c.group.mu.Unlock()
|
||||
|
||||
if c.up == nil {
|
||||
return nil
|
||||
}
|
||||
conn := c.up[id]
|
||||
if conn == nil {
|
||||
return nil
|
||||
}
|
||||
return conn
|
||||
}
|
||||
|
||||
func addUpConn(c *client, id string) (*upConnection, error) {
|
||||
pc, err := groups.api.NewPeerConnection(iceConfiguration())
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
_, err = pc.AddTransceiverFromKind(webrtc.RTPCodecTypeAudio,
|
||||
webrtc.RtpTransceiverInit{
|
||||
Direction: webrtc.RTPTransceiverDirectionRecvonly,
|
||||
},
|
||||
)
|
||||
if err != nil {
|
||||
pc.Close()
|
||||
return nil, err
|
||||
}
|
||||
|
||||
_, err = pc.AddTransceiverFromKind(webrtc.RTPCodecTypeVideo,
|
||||
webrtc.RtpTransceiverInit{
|
||||
Direction: webrtc.RTPTransceiverDirectionRecvonly,
|
||||
},
|
||||
)
|
||||
if err != nil {
|
||||
pc.Close()
|
||||
return nil, err
|
||||
}
|
||||
|
||||
pc.OnICECandidate(func(candidate *webrtc.ICECandidate) {
|
||||
sendICE(c, id, candidate)
|
||||
})
|
||||
|
||||
pc.OnTrack(func(remote *webrtc.Track, receiver *webrtc.RTPReceiver) {
|
||||
local, err := pc.NewTrack(
|
||||
remote.PayloadType(),
|
||||
remote.SSRC(),
|
||||
remote.ID(),
|
||||
remote.Label())
|
||||
if err != nil {
|
||||
log.Printf("%v", err)
|
||||
return
|
||||
}
|
||||
|
||||
c.group.mu.Lock()
|
||||
u, ok := c.up[id]
|
||||
if !ok {
|
||||
log.Printf("Unknown connection")
|
||||
c.group.mu.Unlock()
|
||||
return
|
||||
}
|
||||
u.pairs = append(u.pairs, trackPair{
|
||||
remote: remote,
|
||||
local: local,
|
||||
})
|
||||
done := len(u.pairs) >= u.streamCount
|
||||
c.group.mu.Unlock()
|
||||
|
||||
clients := c.group.getClients(c)
|
||||
for _, cc := range clients {
|
||||
cc.action(addTrackAction{id, local, u, done})
|
||||
if(done && u.label != "") {
|
||||
cc.action(addLabelAction{id, u.label})
|
||||
}
|
||||
}
|
||||
|
||||
go func() {
|
||||
buf := make([]byte, 1500)
|
||||
for {
|
||||
i, err := remote.Read(buf)
|
||||
if err != nil {
|
||||
if err != io.EOF {
|
||||
log.Printf("%v", err)
|
||||
}
|
||||
break
|
||||
}
|
||||
|
||||
_, err = local.Write(buf[:i])
|
||||
if err != nil && err != io.ErrClosedPipe {
|
||||
log.Printf("%v", err)
|
||||
}
|
||||
}
|
||||
}()
|
||||
})
|
||||
|
||||
conn := &upConnection{id: id, pc: pc}
|
||||
|
||||
c.group.mu.Lock()
|
||||
defer c.group.mu.Unlock()
|
||||
|
||||
if c.up == nil {
|
||||
c.up = make(map[string]*upConnection)
|
||||
}
|
||||
if c.up[id] != nil {
|
||||
conn.pc.Close()
|
||||
return nil, errors.New("Adding duplicate connection")
|
||||
}
|
||||
c.up[id] = conn
|
||||
return conn, nil
|
||||
}
|
||||
|
||||
func delUpConn(c *client, id string) {
|
||||
c.group.mu.Lock()
|
||||
defer c.group.mu.Unlock()
|
||||
|
||||
if c.up == nil {
|
||||
log.Printf("Deleting unknown connection")
|
||||
return
|
||||
}
|
||||
|
||||
conn := c.up[id]
|
||||
if conn == nil {
|
||||
log.Printf("Deleting unknown connection")
|
||||
return
|
||||
}
|
||||
|
||||
type clientId struct {
|
||||
client *client
|
||||
id string
|
||||
}
|
||||
cids := make([]clientId, 0)
|
||||
for _, cc := range c.group.clients {
|
||||
for _, otherconn := range cc.down {
|
||||
if otherconn.remote == conn {
|
||||
cids = append(cids, clientId{cc, otherconn.id})
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
for _, cid := range cids {
|
||||
cid.client.action(delPCAction{cid.id})
|
||||
}
|
||||
|
||||
conn.pc.Close()
|
||||
delete(c.up, id)
|
||||
}
|
||||
|
||||
func getDownConn(c *client, id string) *downConnection {
|
||||
if c.down == nil {
|
||||
return nil
|
||||
}
|
||||
|
||||
c.group.mu.Lock()
|
||||
defer c.group.mu.Unlock()
|
||||
conn := c.down[id]
|
||||
if conn == nil {
|
||||
return nil
|
||||
}
|
||||
return conn
|
||||
}
|
||||
|
||||
func addDownConn(c *client, id string, remote *upConnection) (*downConnection, error) {
|
||||
pc, err := groups.api.NewPeerConnection(iceConfiguration())
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
pc.OnICECandidate(func(candidate *webrtc.ICECandidate) {
|
||||
sendICE(c, id, candidate)
|
||||
})
|
||||
|
||||
pc.OnTrack(func(remote *webrtc.Track, receiver *webrtc.RTPReceiver) {
|
||||
log.Printf("Got track on downstream connection")
|
||||
})
|
||||
|
||||
if c.down == nil {
|
||||
c.down = make(map[string]*downConnection)
|
||||
}
|
||||
conn := &downConnection{id: id, pc: pc, remote: remote}
|
||||
|
||||
c.group.mu.Lock()
|
||||
defer c.group.mu.Unlock()
|
||||
if c.down[id] != nil {
|
||||
conn.pc.Close()
|
||||
return nil, errors.New("Adding duplicate connection")
|
||||
}
|
||||
c.down[id] = conn
|
||||
return conn, nil
|
||||
}
|
||||
|
||||
func delDownConn(c *client, id string) {
|
||||
c.group.mu.Lock()
|
||||
defer c.group.mu.Unlock()
|
||||
|
||||
if c.down == nil {
|
||||
log.Printf("Deleting unknown connection")
|
||||
return
|
||||
}
|
||||
conn := c.down[id];
|
||||
if conn == nil {
|
||||
log.Printf("Deleting unknown connection")
|
||||
return
|
||||
}
|
||||
conn.pc.Close()
|
||||
delete(c.down, id)
|
||||
}
|
||||
|
||||
func addDownTrack(c *client, id string, track *webrtc.Track, remote *upConnection) (*downConnection, *webrtc.RTPSender, error) {
|
||||
conn := getDownConn(c, id)
|
||||
if conn == nil {
|
||||
var err error
|
||||
conn, err = addDownConn(c, id, remote)
|
||||
if err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
}
|
||||
|
||||
s, err := conn.pc.AddTrack(track)
|
||||
if err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
|
||||
go rtcpListener(c.group, conn, s)
|
||||
|
||||
return conn, s, nil
|
||||
}
|
||||
|
||||
func rtcpListener(g *group, c *downConnection, s *webrtc.RTPSender) {
|
||||
for {
|
||||
ps, err := s.ReadRTCP()
|
||||
if err != nil {
|
||||
if err != io.EOF {
|
||||
log.Printf("ReadRTCP: %v", err)
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
for _, p := range ps {
|
||||
switch p := p.(type) {
|
||||
case *rtcp.PictureLossIndication:
|
||||
err := sendPli(g, s.Track(), c.remote)
|
||||
if err != nil {
|
||||
log.Printf("sendPli: %v", err)
|
||||
}
|
||||
case *rtcp.ReceiverEstimatedMaximumBitrate:
|
||||
bitrate := uint32(math.MaxInt32)
|
||||
if p.Bitrate < math.MaxInt32 {
|
||||
bitrate = uint32(p.Bitrate)
|
||||
}
|
||||
atomic.StoreUint32(&c.maxBitrate, bitrate)
|
||||
case *rtcp.ReceiverReport:
|
||||
default:
|
||||
log.Printf("RTCP: %T", p)
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func trackKinds(down *downConnection) (audio bool, video bool) {
|
||||
if down.pc == nil {
|
||||
return
|
||||
}
|
||||
|
||||
for _, s := range down.pc.GetSenders() {
|
||||
track := s.Track()
|
||||
if track == nil {
|
||||
continue
|
||||
}
|
||||
switch track.Kind() {
|
||||
case webrtc.RTPCodecTypeAudio:
|
||||
audio = true
|
||||
case webrtc.RTPCodecTypeVideo:
|
||||
video = true
|
||||
}
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
func splitBitrate(bitrate uint32, audio, video bool) (uint32, uint32) {
|
||||
if audio && !video {
|
||||
return bitrate, 0
|
||||
}
|
||||
if !audio && video {
|
||||
return 0, bitrate
|
||||
}
|
||||
|
||||
if bitrate < 6000 {
|
||||
return 6000, 0
|
||||
}
|
||||
|
||||
if bitrate < 12000 {
|
||||
return bitrate, 0
|
||||
}
|
||||
audioRate := 8000 + (bitrate-8000)/4
|
||||
if audioRate > 96000 {
|
||||
audioRate = 96000
|
||||
}
|
||||
return audioRate, bitrate - audioRate
|
||||
}
|
||||
|
||||
func updateBitrate(g *group, up *upConnection) (uint32, uint32) {
|
||||
audio := uint32(math.MaxInt32)
|
||||
video := uint32(math.MaxInt32)
|
||||
g.Range(func(c *client) bool {
|
||||
for _, down := range c.down {
|
||||
if down.remote == up {
|
||||
bitrate := atomic.LoadUint32(&down.maxBitrate)
|
||||
if bitrate == 0 {
|
||||
bitrate = 256000
|
||||
} else if bitrate < 6000 {
|
||||
bitrate = 6000
|
||||
}
|
||||
hasAudio, hasVideo := trackKinds(down)
|
||||
a, v := splitBitrate(bitrate, hasAudio, hasVideo)
|
||||
if a < audio {
|
||||
audio = a
|
||||
}
|
||||
if v < video {
|
||||
video = v
|
||||
}
|
||||
}
|
||||
}
|
||||
return true
|
||||
})
|
||||
up.maxAudioBitrate = audio
|
||||
up.maxVideoBitrate = video
|
||||
return audio, video
|
||||
}
|
||||
|
||||
func sendPli(g *group, local *webrtc.Track, up *upConnection) error {
|
||||
var track *webrtc.Track
|
||||
|
||||
for _, p := range up.pairs {
|
||||
if p.local == local {
|
||||
track = p.remote
|
||||
break
|
||||
}
|
||||
}
|
||||
|
||||
if track == nil {
|
||||
return errors.New("attempted to send PLI for unknown track")
|
||||
}
|
||||
|
||||
return up.pc.WriteRTCP([]rtcp.Packet{
|
||||
&rtcp.PictureLossIndication{MediaSSRC: track.SSRC()},
|
||||
})
|
||||
}
|
||||
|
||||
func countMediaStreams(data string) (int, error) {
|
||||
desc := sdp.NewJSEPSessionDescription(false)
|
||||
err := desc.Unmarshal(data)
|
||||
if err != nil {
|
||||
return 0, err
|
||||
}
|
||||
return len(desc.MediaDescriptions), nil
|
||||
}
|
||||
|
||||
func negotiate(c *client, id string, pc *webrtc.PeerConnection) error {
|
||||
offer, err := pc.CreateOffer(nil)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
err = pc.SetLocalDescription(offer)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
return c.write(clientMessage{
|
||||
Type: "offer",
|
||||
Id: id,
|
||||
Offer: &offer,
|
||||
})
|
||||
}
|
||||
|
||||
func sendICE(c *client, id string, candidate *webrtc.ICECandidate) error {
|
||||
if candidate == nil {
|
||||
return nil
|
||||
}
|
||||
cand := candidate.ToJSON()
|
||||
return c.write(clientMessage{
|
||||
Type: "ice",
|
||||
Id: id,
|
||||
Candidate: &cand,
|
||||
})
|
||||
}
|
||||
|
||||
func gotOffer(c *client, offer webrtc.SessionDescription, id string) error {
|
||||
var err error
|
||||
up, ok := c.up[id]
|
||||
if !ok {
|
||||
up, err = addUpConn(c, id)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
if c.username != "" {
|
||||
up.label = c.username
|
||||
}
|
||||
n, err := countMediaStreams(offer.SDP)
|
||||
if err != nil {
|
||||
log.Printf("Couldn't parse SDP: %v", err)
|
||||
n = 2
|
||||
}
|
||||
up.streamCount = n
|
||||
err = up.pc.SetRemoteDescription(offer)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
answer, err := up.pc.CreateAnswer(nil)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
err = up.pc.SetLocalDescription(answer)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
return c.write(clientMessage{
|
||||
Type: "answer",
|
||||
Id: id,
|
||||
Answer: &answer,
|
||||
})
|
||||
}
|
||||
|
||||
func gotAnswer(c *client, answer webrtc.SessionDescription, id string) error {
|
||||
conn := getDownConn(c, id)
|
||||
if conn == nil {
|
||||
return protocolError("unknown id in answer")
|
||||
}
|
||||
err := conn.pc.SetRemoteDescription(answer)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func gotICE(c *client, candidate *webrtc.ICECandidateInit, id string) error {
|
||||
var pc *webrtc.PeerConnection
|
||||
down := getDownConn(c, id)
|
||||
if down != nil {
|
||||
pc = down.pc
|
||||
} else {
|
||||
up := getUpConn(c, id)
|
||||
if up == nil {
|
||||
return errors.New("unknown id in ICE")
|
||||
}
|
||||
pc = up.pc
|
||||
}
|
||||
return pc.AddICECandidate(*candidate)
|
||||
}
|
||||
|
||||
func clientLoop(c *client, conn *websocket.Conn) error {
|
||||
read := make(chan interface{}, 1)
|
||||
go clientReader(conn, read, c.done)
|
||||
|
||||
defer func() {
|
||||
if c.down != nil {
|
||||
for id := range c.down {
|
||||
c.write(clientMessage{
|
||||
Type: "close",
|
||||
Id: id,
|
||||
})
|
||||
delDownConn(c, id)
|
||||
}
|
||||
}
|
||||
|
||||
if c.up != nil {
|
||||
for id := range c.up {
|
||||
delUpConn(c, id)
|
||||
}
|
||||
}
|
||||
}()
|
||||
|
||||
g := c.group
|
||||
|
||||
for _, cc := range g.getClients(c) {
|
||||
cc.action(pushTracksAction{c})
|
||||
}
|
||||
|
||||
ticker := time.NewTicker(2 * time.Second)
|
||||
defer ticker.Stop()
|
||||
|
||||
for {
|
||||
select {
|
||||
case m, ok := <-read:
|
||||
if !ok {
|
||||
return errors.New("reader died")
|
||||
}
|
||||
switch m := m.(type) {
|
||||
case clientMessage:
|
||||
err := handleClientMessage(c, m)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
case error:
|
||||
return m
|
||||
}
|
||||
case a := <-c.actionCh:
|
||||
switch a := a.(type) {
|
||||
case addTrackAction:
|
||||
down, _, err :=
|
||||
addDownTrack(
|
||||
c, a.id, a.track,
|
||||
a.remote)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
if a.done {
|
||||
err = negotiate(c, a.id, down.pc)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
case delPCAction:
|
||||
c.write(clientMessage{
|
||||
Type: "close",
|
||||
Id: a.id,
|
||||
})
|
||||
delDownConn(c, a.id)
|
||||
case addLabelAction:
|
||||
c.write(clientMessage{
|
||||
Type: "label",
|
||||
Id: a.id,
|
||||
Value: a.label,
|
||||
})
|
||||
case pushTracksAction:
|
||||
for _, u := range c.up {
|
||||
var done bool
|
||||
for i, p := range u.pairs {
|
||||
done = i >= u.streamCount - 1
|
||||
a.c.action(addTrackAction{
|
||||
u.id, p.local, u,
|
||||
done,
|
||||
})
|
||||
}
|
||||
if done && u.label != "" {
|
||||
a.c.action(addLabelAction{
|
||||
u.id, u.label,
|
||||
})
|
||||
|
||||
}
|
||||
}
|
||||
default:
|
||||
log.Printf("unexpected action %T", a)
|
||||
return errors.New("unexpected action")
|
||||
}
|
||||
case <-ticker.C:
|
||||
sendRateUpdate(c)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func handleClientMessage(c *client, m clientMessage) error {
|
||||
switch m.Type {
|
||||
case "offer":
|
||||
if m.Offer == nil {
|
||||
return protocolError("null offer")
|
||||
}
|
||||
err := gotOffer(c, *m.Offer, m.Id)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
case "answer":
|
||||
if m.Answer == nil {
|
||||
return protocolError("null answer")
|
||||
}
|
||||
err := gotAnswer(c, *m.Answer, m.Id)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
case "close":
|
||||
delUpConn(c, m.Id)
|
||||
case "ice":
|
||||
if m.Candidate == nil {
|
||||
return protocolError("null candidate")
|
||||
}
|
||||
err := gotICE(c, m.Candidate, m.Id)
|
||||
if err != nil {
|
||||
log.Printf("ICE: %v", err)
|
||||
}
|
||||
case "chat":
|
||||
clients := c.group.getClients(c)
|
||||
for _, cc := range clients {
|
||||
cc.write(m)
|
||||
}
|
||||
default:
|
||||
log.Printf("unexpected message: %v", m.Type)
|
||||
return protocolError("unexpected message")
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func sendRateUpdate(c *client) {
|
||||
for _, u := range c.up {
|
||||
oldaudio := u.maxAudioBitrate
|
||||
oldvideo := u.maxVideoBitrate
|
||||
audio, video := updateBitrate(c.group, u)
|
||||
if audio != oldaudio || video != oldvideo {
|
||||
c.write(clientMessage{
|
||||
Type: "maxbitrate",
|
||||
Id: u.id,
|
||||
AudioRate: int(audio),
|
||||
VideoRate: int(video),
|
||||
})
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func clientReader(conn *websocket.Conn, read chan<- interface{}, done <-chan struct{}) {
|
||||
defer close(read)
|
||||
for {
|
||||
var m clientMessage
|
||||
err := conn.ReadJSON(&m)
|
||||
if err != nil {
|
||||
select {
|
||||
case read <- err:
|
||||
return
|
||||
case <-done:
|
||||
return
|
||||
}
|
||||
}
|
||||
select {
|
||||
case read <- m:
|
||||
case <-done:
|
||||
return
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func clientWriter(conn *websocket.Conn, ch <-chan interface{}, done chan<- struct{}) {
|
||||
defer func() {
|
||||
close(done)
|
||||
conn.Close()
|
||||
}()
|
||||
|
||||
for {
|
||||
m, ok := <-ch
|
||||
if !ok {
|
||||
break
|
||||
}
|
||||
err := conn.SetWriteDeadline(
|
||||
time.Now().Add(2 * time.Second))
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
switch m := m.(type) {
|
||||
case clientMessage:
|
||||
err := conn.WriteJSON(m)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
case closeMessage:
|
||||
err := conn.WriteMessage(websocket.CloseMessage, m.data)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
default:
|
||||
log.Printf("clientWiter: unexpected message %T", m)
|
||||
return
|
||||
}
|
||||
}
|
||||
}
|
||||
10
go.mod
Normal file
10
go.mod
Normal file
|
|
@ -0,0 +1,10 @@
|
|||
module sfu
|
||||
|
||||
go 1.13
|
||||
|
||||
require (
|
||||
github.com/gorilla/websocket v1.4.2
|
||||
github.com/pion/rtcp v1.2.1
|
||||
github.com/pion/sdp v1.3.0
|
||||
github.com/pion/webrtc/v2 v2.2.5
|
||||
)
|
||||
115
go.sum
Normal file
115
go.sum
Normal file
|
|
@ -0,0 +1,115 @@
|
|||
github.com/cheekybits/genny v1.0.0 h1:uGGa4nei+j20rOSeDeP5Of12XVm7TGUd4dJA9RDitfE=
|
||||
github.com/cheekybits/genny v1.0.0/go.mod h1:+tQajlRqAUrPI7DOSpB0XAqZYtQakVtB7wXkRAgjxjQ=
|
||||
github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
|
||||
github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
|
||||
github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
|
||||
github.com/fsnotify/fsnotify v1.4.7 h1:IXs+QLmnXW2CcXuY+8Mzv/fWEsPGWxqefPtCP5CnV9I=
|
||||
github.com/fsnotify/fsnotify v1.4.7/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMoQvtojpjFo=
|
||||
github.com/golang/mock v1.2.0 h1:28o5sBqPkBsMGnC6b4MvE2TzSr5/AT4c/1fLqVGIwlk=
|
||||
github.com/golang/mock v1.2.0/go.mod h1:oTYuIxOrZwtPieC+H1uAHpcLFnEyAGVDL/k47Jfbm0A=
|
||||
github.com/golang/protobuf v1.2.0 h1:P3YflyNX/ehuJFLhxviNdFxQPkGK5cDcApsge1SqnvM=
|
||||
github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
|
||||
github.com/gorilla/websocket v1.4.2 h1:+/TMaTYc4QFitKJxsQ7Yye35DkWvkdLcvGKqM+x0Ufc=
|
||||
github.com/gorilla/websocket v1.4.2/go.mod h1:YR8l580nyteQvAITg2hZ9XVh4b55+EU/adAjf1fMHhE=
|
||||
github.com/hpcloud/tail v1.0.0 h1:nfCOvKYfkgYP8hkirhJocXT2+zOD8yUNjXaWfTlyFKI=
|
||||
github.com/hpcloud/tail v1.0.0/go.mod h1:ab1qPbhIpdTxEkNHXyeSf5vhxWSCs/tWer42PpOxQnU=
|
||||
github.com/kr/pretty v0.1.0 h1:L/CwN0zerZDmRFUapSPitk6f+Q3+0za1rQkzVuMiMFI=
|
||||
github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORNo=
|
||||
github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
|
||||
github.com/kr/text v0.1.0 h1:45sCR5RtlFHMR4UwH9sdQ5TC8v0qDQCHnXt+kaKSTVE=
|
||||
github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
|
||||
github.com/lucas-clemente/quic-go v0.7.1-0.20190401152353-907071221cf9 h1:tbuodUh2vuhOVZAdW3NEUvosFHUMJwUNl7jk/VSEiwc=
|
||||
github.com/lucas-clemente/quic-go v0.7.1-0.20190401152353-907071221cf9/go.mod h1:PpMmPfPKO9nKJ/psF49ESTAGQSdfXxlg1otPbEB2nOw=
|
||||
github.com/marten-seemann/qtls v0.2.3 h1:0yWJ43C62LsZt08vuQJDK1uC1czUc3FJeCLPoNAI4vA=
|
||||
github.com/marten-seemann/qtls v0.2.3/go.mod h1:xzjG7avBwGGbdZ8dTGxlBnLArsVKLvwmjgmPuiQEcYk=
|
||||
github.com/onsi/ginkgo v1.6.0/go.mod h1:lLunBs/Ym6LB5Z9jYTR76FiuTmxDTDusOGeTQH+WWjE=
|
||||
github.com/onsi/ginkgo v1.7.0 h1:WSHQ+IS43OoUrWtD1/bbclrwK8TTH5hzp+umCiuxHgs=
|
||||
github.com/onsi/ginkgo v1.7.0/go.mod h1:lLunBs/Ym6LB5Z9jYTR76FiuTmxDTDusOGeTQH+WWjE=
|
||||
github.com/onsi/gomega v1.4.3 h1:RE1xgDvH7imwFD45h+u2SgIfERHlS2yNG4DObb5BSKU=
|
||||
github.com/onsi/gomega v1.4.3/go.mod h1:ex+gbHU/CVuBBDIJjb2X0qEXbFg53c61hWP/1CpauHY=
|
||||
github.com/pion/datachannel v1.4.16 h1:dvuDC0IBMUDQvwO+gRu0Dv+W5j7rrgNpCmtheb6iYnc=
|
||||
github.com/pion/datachannel v1.4.16/go.mod h1:gRGhxZv7X2/30Qxes4WEXtimKBXcwj/3WsDtBlHnvJY=
|
||||
github.com/pion/dtls/v2 v2.0.0-rc.9 h1:wPb0JKmYoleAM2o8vQSPaUM+geJq7l0AdeUlPsg19ec=
|
||||
github.com/pion/dtls/v2 v2.0.0-rc.9/go.mod h1:6eFkFvpo0T+odQ+39HFEtOO7LX5cUlFqXdSo4ucZtGg=
|
||||
github.com/pion/dtls/v2 v2.0.0-rc.10 h1:WM+LVyR3f7hfxMLE0zhydwxSesboH/TXDnqv+32uiHo=
|
||||
github.com/pion/dtls/v2 v2.0.0-rc.10/go.mod h1:VkY5VL2wtsQQOG60xQ4lkV5pdn0wwBBTzCfRJqXhp3A=
|
||||
github.com/pion/ice v0.7.12 h1:Lsh4f0Uvh/vOCXSyj+w5C736LrKt66qAKeA2LFwSkn0=
|
||||
github.com/pion/ice v0.7.12/go.mod h1:yLt/9LAJEZXFtnOBdpq5YGaOF9SsDjVGCvzF3MF4k5k=
|
||||
github.com/pion/logging v0.2.2 h1:M9+AIj/+pxNsDfAT64+MAVgJO0rsyLnoJKCqf//DoeY=
|
||||
github.com/pion/logging v0.2.2/go.mod h1:k0/tDVsRCX2Mb2ZEmTqNa7CWsQPc+YYCB7Q+5pahoms=
|
||||
github.com/pion/mdns v0.0.4 h1:O4vvVqr4DGX63vzmO6Fw9vpy3lfztVWHGCQfyw0ZLSY=
|
||||
github.com/pion/mdns v0.0.4/go.mod h1:R1sL0p50l42S5lJs91oNdUL58nm0QHrhxnSegr++qC0=
|
||||
github.com/pion/quic v0.1.1 h1:D951FV+TOqI9A0rTF7tHx0Loooqz+nyzjEyj8o3PuMA=
|
||||
github.com/pion/quic v0.1.1/go.mod h1:zEU51v7ru8Mp4AUBJvj6psrSth5eEFNnVQK5K48oV3k=
|
||||
github.com/pion/rtcp v1.2.1 h1:S3yG4KpYAiSmBVqKAfgRa5JdwBNj4zK3RLUa8JYdhak=
|
||||
github.com/pion/rtcp v1.2.1/go.mod h1:a5dj2d6BKIKHl43EnAOIrCczcjESrtPuMgfmL6/K6QM=
|
||||
github.com/pion/rtp v1.3.2 h1:Yfzf1mU4Zmg7XWHitzYe2i+l+c68iO+wshzIUW44p1c=
|
||||
github.com/pion/rtp v1.3.2/go.mod h1:q9wPnA96pu2urCcW/sK/RiDn597bhGoAQQ+y2fDwHuY=
|
||||
github.com/pion/rtp v1.4.0 h1:EkeHEXKuJhZoRUxtL2Ie80vVg9gBH+poT9UoL8M14nw=
|
||||
github.com/pion/rtp v1.4.0/go.mod h1:/l4cvcKd0D3u9JLs2xSVI95YkfXW87a3br3nqmVtSlE=
|
||||
github.com/pion/sctp v1.7.6 h1:8qZTdJtbKfAns/Hv5L0PAj8FyXcsKhMH1pKUCGisQg4=
|
||||
github.com/pion/sctp v1.7.6/go.mod h1:ichkYQ5tlgCQwEwvgfdcAolqx1nHbYCxo4D7zK/K0X8=
|
||||
github.com/pion/sdp v1.3.0 h1:21lpgEILHyolpsIrbCBagZaAPj4o057cFjzaFebkVOs=
|
||||
github.com/pion/sdp v1.3.0/go.mod h1:ceA2lTyftydQTuCIbUNoH77aAt6CiQJaRpssA4Gee8I=
|
||||
github.com/pion/sdp/v2 v2.3.6 h1:jmhawd6iJy6HeHlAhlXJAGYxnDCighvgeCexm4c3UVk=
|
||||
github.com/pion/sdp/v2 v2.3.6/go.mod h1:+ZZf35r1+zbaWYiZLfPutWfx58DAWcGb2QsS3D/s9M8=
|
||||
github.com/pion/srtp v1.3.1 h1:WNDLN41ST0P6cXRpzx97JJW//vChAEo1+Etdqo+UMnM=
|
||||
github.com/pion/srtp v1.3.1/go.mod h1:nxEytDDGTN+eNKJ1l5gzOCWQFuksgijorsSlgEjc40Y=
|
||||
github.com/pion/stun v0.3.3 h1:brYuPl9bN9w/VM7OdNzRSLoqsnwlyNvD9MVeJrHjDQw=
|
||||
github.com/pion/stun v0.3.3/go.mod h1:xrCld6XM+6GWDZdvjPlLMsTU21rNxnO6UO8XsAvHr/M=
|
||||
github.com/pion/transport v0.6.0/go.mod h1:iWZ07doqOosSLMhZ+FXUTq+TamDoXSllxpbGcfkCmbE=
|
||||
github.com/pion/transport v0.8.10/go.mod h1:tBmha/UCjpum5hqTWhfAEs3CO4/tHSg0MYRhSzR+CZ8=
|
||||
github.com/pion/transport v0.10.0 h1:9M12BSneJm6ggGhJyWpDveFOstJsTiQjkLf4M44rm80=
|
||||
github.com/pion/transport v0.10.0/go.mod h1:BnHnUipd0rZQyTVB2SBGojFHT9CBt5C5TcsJSQGkvSE=
|
||||
github.com/pion/turn/v2 v2.0.3 h1:SJUUIbcPoehlyZgMyIUbBBDhI03sBx32x3JuSIBKBWA=
|
||||
github.com/pion/turn/v2 v2.0.3/go.mod h1:kl1hmT3NxcLynpXVnwJgObL8C9NaCyPTeqI2DcCpSZs=
|
||||
github.com/pion/webrtc/v2 v2.2.5 h1:JHHv4fKeBJlVAziqq9QByCiH+g9Jnru9epmanRQqFG4=
|
||||
github.com/pion/webrtc/v2 v2.2.5/go.mod h1:uiygdBNqK4PfZu2BxjzVV5xkzqiAMlKT4r4NAFXCyqc=
|
||||
github.com/pkg/errors v0.8.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
|
||||
github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4=
|
||||
github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
|
||||
github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
|
||||
github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
|
||||
github.com/sclevine/agouti v3.0.0+incompatible/go.mod h1:b4WX9W9L1sfQKXeJf1mUTLZKJ48R1S7H23Ji7oFO5Bw=
|
||||
github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
|
||||
github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
|
||||
github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81PSLYec5m4=
|
||||
github.com/stretchr/testify v1.5.1 h1:nOGnQDM7FYENwehXlg/kFVnos3rEvtKTjRvOWSzb6H4=
|
||||
github.com/stretchr/testify v1.5.1/go.mod h1:5W2xD1RspED5o8YsWQXVCued0rvSQ+mT+I5cxcmMvtA=
|
||||
golang.org/x/crypto v0.0.0-20190228161510-8dd112bcdc25/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
|
||||
golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
|
||||
golang.org/x/crypto v0.0.0-20200221231518-2aa609cf4a9d h1:1ZiEyfaQIg3Qh0EoqpwAakHVhecoE5wlSg5GjnafJGw=
|
||||
golang.org/x/crypto v0.0.0-20200221231518-2aa609cf4a9d/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
|
||||
golang.org/x/crypto v0.0.0-20200323165209-0ec3e9974c59 h1:3zb4D3T4G8jdExgVU/95+vQXfpEPiMdCaZgmGVxjNHM=
|
||||
golang.org/x/crypto v0.0.0-20200323165209-0ec3e9974c59/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
|
||||
golang.org/x/net v0.0.0-20180906233101-161cd47e91fd/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
|
||||
golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
|
||||
golang.org/x/net v0.0.0-20191126235420-ef20fe5d7933/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
|
||||
golang.org/x/net v0.0.0-20200226121028-0de0cce0169b/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
|
||||
golang.org/x/net v0.0.0-20200301022130-244492dfa37a h1:GuSPYbZzB5/dcLNCwLQLsg3obCJtX9IJhpXkvY7kzk0=
|
||||
golang.org/x/net v0.0.0-20200301022130-244492dfa37a/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
|
||||
golang.org/x/net v0.0.0-20200324143707-d3edc9973b7e h1:3G+cUijn7XD+S4eJFddp53Pv7+slrESplyjG25HgL+k=
|
||||
golang.org/x/net v0.0.0-20200324143707-d3edc9973b7e/go.mod h1:qpuaurCH72eLCgpAm/N6yyVIVM9cpaDIP3A8BGJEC5A=
|
||||
golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f h1:wMNYb4v58l5UBM7MYRLPG6ZhfOqbKu7X5eyFl8ZhKvA=
|
||||
golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
|
||||
golang.org/x/sys v0.0.0-20180909124046-d0be0721c37e/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
|
||||
golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
|
||||
golang.org/x/sys v0.0.0-20190228124157-a34e9553db1e/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
|
||||
golang.org/x/sys v0.0.0-20190412213103-97732733099d h1:+R4KGOnez64A81RvjARKc4UT5/tI9ujCIVX+P5KiHuI=
|
||||
golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
|
||||
golang.org/x/sys v0.0.0-20200323222414-85ca7c5b95cd h1:xhmwyvizuTgC2qz7ZlMluP20uW+C3Rm0FD/WLDX8884=
|
||||
golang.org/x/sys v0.0.0-20200323222414-85ca7c5b95cd/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
|
||||
golang.org/x/text v0.3.0 h1:g61tztE5qeGQ89tm6NTjjM9VPIm088od1l6aSorWRWg=
|
||||
golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
|
||||
golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543 h1:E7g+9GITq07hpfrRu66IVDexMakfv52eLZ2CXBWiKr4=
|
||||
golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
|
||||
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
|
||||
gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15 h1:YR8cESwS4TdDjEe65xsg0ogRM/Nc3DYOhEAlW+xobZo=
|
||||
gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
|
||||
gopkg.in/fsnotify.v1 v1.4.7 h1:xOHLXZwVvI9hhs+cLKq5+I5onOuwQLhQwiu63xxlHs4=
|
||||
gopkg.in/fsnotify.v1 v1.4.7/go.mod h1:Tz8NjZHkW78fSQdbUxIjBTcgA1z1m8ZHf0WmKUhAMys=
|
||||
gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7 h1:uRGJdciOHaEIrze2W8Q3AKkepLTh2hOroT7a+7czfdQ=
|
||||
gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7/go.mod h1:dt/ZhP58zS4L8KSrWDmTeBkI65Dw0HsyUHuEVlX15mw=
|
||||
gopkg.in/yaml.v2 v2.2.1/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
|
||||
gopkg.in/yaml.v2 v2.2.2 h1:ZCJp+EgiOT7lHqUV2J862kp8Qj64Jo6az82+3Td9dZw=
|
||||
gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
|
||||
239
group.go
Normal file
239
group.go
Normal file
|
|
@ -0,0 +1,239 @@
|
|||
// Copyright (c) 2020 by Juliusz Chroboczek.
|
||||
|
||||
// This is not open source software. Copy it, and I'll break into your
|
||||
// house and tell your three year-old that Santa doesn't exist.
|
||||
|
||||
package main
|
||||
|
||||
import (
|
||||
"log"
|
||||
"sync"
|
||||
|
||||
"github.com/pion/webrtc/v2"
|
||||
)
|
||||
|
||||
type trackPair struct {
|
||||
remote, local *webrtc.Track
|
||||
}
|
||||
|
||||
type upConnection struct {
|
||||
id string
|
||||
label string
|
||||
pc *webrtc.PeerConnection
|
||||
maxAudioBitrate uint32
|
||||
maxVideoBitrate uint32
|
||||
streamCount int
|
||||
pairs []trackPair
|
||||
}
|
||||
|
||||
type downConnection struct {
|
||||
id string
|
||||
pc *webrtc.PeerConnection
|
||||
remote *upConnection
|
||||
maxBitrate uint32
|
||||
}
|
||||
|
||||
type client struct {
|
||||
group *group
|
||||
id string
|
||||
username string
|
||||
done chan struct{}
|
||||
writeCh chan interface{}
|
||||
writerDone chan struct{}
|
||||
actionCh chan interface{}
|
||||
down map[string]*downConnection
|
||||
up map[string]*upConnection
|
||||
}
|
||||
|
||||
type group struct {
|
||||
name string
|
||||
public bool
|
||||
|
||||
mu sync.Mutex
|
||||
clients []*client
|
||||
}
|
||||
|
||||
type delPCAction struct {
|
||||
id string
|
||||
}
|
||||
|
||||
type addTrackAction struct {
|
||||
id string
|
||||
track *webrtc.Track
|
||||
remote *upConnection
|
||||
done bool
|
||||
}
|
||||
|
||||
type addLabelAction struct {
|
||||
id string
|
||||
label string
|
||||
}
|
||||
|
||||
type getUpAction struct {
|
||||
ch chan<- string
|
||||
}
|
||||
|
||||
type pushTracksAction struct {
|
||||
c *client
|
||||
}
|
||||
|
||||
var groups struct {
|
||||
mu sync.Mutex
|
||||
groups map[string]*group
|
||||
api *webrtc.API
|
||||
}
|
||||
|
||||
func addGroup(name string) (*group, error) {
|
||||
groups.mu.Lock()
|
||||
defer groups.mu.Unlock()
|
||||
|
||||
if groups.groups == nil {
|
||||
groups.groups = make(map[string]*group)
|
||||
m := webrtc.MediaEngine{}
|
||||
m.RegisterCodec(webrtc.NewRTPVP8Codec(
|
||||
webrtc.DefaultPayloadTypeVP8, 90000))
|
||||
m.RegisterCodec(webrtc.NewRTPOpusCodec(
|
||||
webrtc.DefaultPayloadTypeOpus, 48000))
|
||||
groups.api = webrtc.NewAPI(
|
||||
webrtc.WithMediaEngine(m),
|
||||
)
|
||||
}
|
||||
|
||||
g := groups.groups[name]
|
||||
|
||||
if g == nil {
|
||||
g = &group{
|
||||
name: name,
|
||||
}
|
||||
groups.groups[name] = g
|
||||
}
|
||||
|
||||
return g, nil
|
||||
}
|
||||
|
||||
func delGroup(name string) bool {
|
||||
groups.mu.Lock()
|
||||
defer groups.mu.Unlock()
|
||||
|
||||
g := groups.groups[name]
|
||||
if g == nil {
|
||||
return true
|
||||
}
|
||||
|
||||
if len(g.clients) != 0 {
|
||||
return false
|
||||
}
|
||||
|
||||
delete(groups.groups, name)
|
||||
return true
|
||||
}
|
||||
|
||||
type userid struct {
|
||||
id string
|
||||
username string
|
||||
}
|
||||
|
||||
func addClient(name string, client *client) (*group, []userid, error) {
|
||||
g, err := addGroup(name)
|
||||
if err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
|
||||
var users []userid
|
||||
g.mu.Lock()
|
||||
defer g.mu.Unlock()
|
||||
for _, c := range g.clients {
|
||||
users = append(users, userid{c.id, c.username})
|
||||
}
|
||||
g.clients = append(g.clients, client)
|
||||
return g, users, nil
|
||||
}
|
||||
|
||||
func delClient(c *client) {
|
||||
c.group.mu.Lock()
|
||||
defer c.group.mu.Unlock()
|
||||
g := c.group
|
||||
for i, cc := range g.clients {
|
||||
if cc == c {
|
||||
g.clients =
|
||||
append(g.clients[:i], g.clients[i+1:]...)
|
||||
c.group = nil
|
||||
return
|
||||
}
|
||||
}
|
||||
log.Printf("Deleting unknown client")
|
||||
c.group = nil
|
||||
}
|
||||
|
||||
func (g *group) getClients(except *client) []*client {
|
||||
g.mu.Lock()
|
||||
defer g.mu.Unlock()
|
||||
clients := make([]*client, 0, len(g.clients))
|
||||
for _, c := range g.clients {
|
||||
if c != except {
|
||||
clients = append(clients, c)
|
||||
}
|
||||
}
|
||||
return clients
|
||||
}
|
||||
|
||||
func (g *group) Range(f func(c *client) bool) {
|
||||
g.mu.Lock()
|
||||
defer g.mu.Unlock()
|
||||
for _, c := range g.clients {
|
||||
ok := f(c)
|
||||
if(!ok){
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
type writerDeadError int
|
||||
|
||||
func (err writerDeadError) Error() string {
|
||||
return "client writer died"
|
||||
}
|
||||
|
||||
func (c *client) write(m clientMessage) error {
|
||||
select {
|
||||
case c.writeCh <- m:
|
||||
return nil
|
||||
case <-c.writerDone:
|
||||
return writerDeadError(0)
|
||||
}
|
||||
}
|
||||
|
||||
type clientDeadError int
|
||||
|
||||
func (err clientDeadError) Error() string {
|
||||
return "client dead"
|
||||
}
|
||||
|
||||
func (c *client) action(m interface{}) error {
|
||||
select {
|
||||
case c.actionCh <- m:
|
||||
return nil
|
||||
case <-c.done:
|
||||
return clientDeadError(0)
|
||||
}
|
||||
}
|
||||
|
||||
type publicGroup struct {
|
||||
Name string `json:"name"`
|
||||
ClientCount int `json:"clientCount"`
|
||||
}
|
||||
|
||||
func getPublicGroups() []publicGroup {
|
||||
gs := make([]publicGroup, 0)
|
||||
groups.mu.Lock()
|
||||
defer groups.mu.Unlock()
|
||||
for _, g := range groups.groups {
|
||||
if g.public {
|
||||
gs = append(gs, publicGroup{
|
||||
Name: g.name,
|
||||
ClientCount: len(g.clients),
|
||||
})
|
||||
}
|
||||
}
|
||||
return gs
|
||||
}
|
||||
108
sfu.go
Normal file
108
sfu.go
Normal file
|
|
@ -0,0 +1,108 @@
|
|||
// Copyright (c) 2020 by Juliusz Chroboczek.
|
||||
|
||||
// This is not open source software. Copy it, and I'll break into your
|
||||
// house and tell your three year-old that Santa doesn't exist.
|
||||
|
||||
package main
|
||||
|
||||
import (
|
||||
"encoding/json"
|
||||
"flag"
|
||||
"log"
|
||||
"net/http"
|
||||
"os"
|
||||
"os/signal"
|
||||
"path/filepath"
|
||||
"syscall"
|
||||
"time"
|
||||
|
||||
"github.com/gorilla/websocket"
|
||||
)
|
||||
|
||||
var httpAddr string
|
||||
var staticRoot string
|
||||
var dataDir string
|
||||
var iceFilename string
|
||||
|
||||
func main() {
|
||||
flag.StringVar(&httpAddr, "http", ":8443", "web server `address`")
|
||||
flag.StringVar(&staticRoot, "static", "./static/",
|
||||
"web server root `directory`")
|
||||
flag.StringVar(&dataDir, "data", "./data/",
|
||||
"data `directory`")
|
||||
flag.Parse()
|
||||
iceFilename = filepath.Join(staticRoot, "ice-servers.json")
|
||||
|
||||
http.Handle("/", mungeHandler{http.FileServer(http.Dir(staticRoot))})
|
||||
http.HandleFunc("/group/",
|
||||
func(w http.ResponseWriter, r *http.Request) {
|
||||
mungeHeader(w)
|
||||
http.ServeFile(w, r, staticRoot+"/sfu.html")
|
||||
})
|
||||
http.HandleFunc("/ws", wsHandler)
|
||||
http.HandleFunc("/public-groups.json", publicHandler)
|
||||
|
||||
go func() {
|
||||
server := &http.Server{
|
||||
Addr: httpAddr,
|
||||
ReadTimeout: 60 * time.Second,
|
||||
WriteTimeout: 30 * time.Second,
|
||||
IdleTimeout: 120 * time.Second,
|
||||
}
|
||||
var err error
|
||||
log.Printf("Listening on %v", httpAddr)
|
||||
err = server.ListenAndServeTLS(
|
||||
filepath.Join(dataDir, "cert.pem"),
|
||||
filepath.Join(dataDir, "key.pem"),
|
||||
)
|
||||
log.Fatalf("ListenAndServeTLS: %v", err)
|
||||
}()
|
||||
|
||||
terminate := make(chan os.Signal, 1)
|
||||
signal.Notify(terminate, syscall.SIGINT)
|
||||
<-terminate
|
||||
}
|
||||
|
||||
func mungeHeader(w http.ResponseWriter) {
|
||||
w.Header().Add("Content-Security-Policy",
|
||||
"connect-src ws: wss: 'self'; img-src data: 'self'; default-src 'self'")
|
||||
}
|
||||
|
||||
type mungeHandler struct {
|
||||
h http.Handler
|
||||
}
|
||||
|
||||
func (h mungeHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
|
||||
mungeHeader(w)
|
||||
h.h.ServeHTTP(w, r)
|
||||
}
|
||||
|
||||
func publicHandler(w http.ResponseWriter, r *http.Request) {
|
||||
w.Header().Set("content-type", "application/json")
|
||||
w.Header().Set("cache-control", "no-cache")
|
||||
|
||||
if r.Method == "HEAD" {
|
||||
return
|
||||
}
|
||||
|
||||
g := getPublicGroups()
|
||||
e := json.NewEncoder(w)
|
||||
e.Encode(g)
|
||||
return
|
||||
}
|
||||
|
||||
var upgrader websocket.Upgrader
|
||||
|
||||
func wsHandler(w http.ResponseWriter, r *http.Request) {
|
||||
conn, err := upgrader.Upgrade(w, r, nil)
|
||||
if err != nil {
|
||||
log.Printf("Websocket upgrade: %v", err)
|
||||
return
|
||||
}
|
||||
go func() {
|
||||
err := startClient(conn)
|
||||
if err != nil {
|
||||
log.Printf("client: %v", err)
|
||||
}
|
||||
}()
|
||||
}
|
||||
15
static/common.css
Normal file
15
static/common.css
Normal file
|
|
@ -0,0 +1,15 @@
|
|||
body {
|
||||
font: 14px "Lato", Arial, sans-serif;
|
||||
}
|
||||
|
||||
h1 {
|
||||
font-size: 160%;
|
||||
}
|
||||
|
||||
.signature {
|
||||
border-top: solid;
|
||||
margin-top: 2em;
|
||||
padding-top: 0em;
|
||||
border-width: thin;
|
||||
clear: both;
|
||||
}
|
||||
32
static/index.html
Normal file
32
static/index.html
Normal file
|
|
@ -0,0 +1,32 @@
|
|||
<!DOCTYPE html>
|
||||
<html lang="en">
|
||||
<head>
|
||||
<title>SFU</title>
|
||||
<link rel="stylesheet" href="/common.css">
|
||||
<link rel="stylesheet" href="/mainpage.css">
|
||||
<link rel="author" href="https://www.irif.fr/~jch/"/>
|
||||
</head>
|
||||
|
||||
<body>
|
||||
<h1>SFU</h1>
|
||||
|
||||
<form id="groupform">
|
||||
<label for="group">Group:</label>
|
||||
<input id="group" type="text" name="group"/>
|
||||
<input type="submit" value="Join"/><br/>
|
||||
</form>
|
||||
|
||||
<div id="public-groups" class="groups">
|
||||
<h2>Public groups</h2>
|
||||
|
||||
<table id="public-groups-table"></table>
|
||||
</div>
|
||||
|
||||
<footer class="signature"><p><a href="https://www.irif.fr/~jch/software/sfu/">Unnamed SFU</a> by <a href="https://www.irif.fr/~jch/" rel="author">Juliusz Chroboczek</a></footer>
|
||||
|
||||
<script src="/mainpage.js" defer></script>
|
||||
|
||||
</body>
|
||||
</html>
|
||||
|
||||
|
||||
8
static/mainpage.css
Normal file
8
static/mainpage.css
Normal file
|
|
@ -0,0 +1,8 @@
|
|||
.groups {
|
||||
}
|
||||
|
||||
.nogroups {
|
||||
display: none;
|
||||
}
|
||||
|
||||
|
||||
54
static/mainpage.js
Normal file
54
static/mainpage.js
Normal file
|
|
@ -0,0 +1,54 @@
|
|||
// Copyright (c) 2019-2020 by Juliusz Chroboczek.
|
||||
|
||||
// This is not open source software. Copy it, and I'll break into your
|
||||
// house and tell your three year-old that Santa doesn't exist.
|
||||
|
||||
'use strict';
|
||||
|
||||
document.getElementById('groupform').onsubmit = function(e) {
|
||||
e.preventDefault();
|
||||
let group = document.getElementById('group').value.trim();
|
||||
|
||||
location.href = '/group/' + group;
|
||||
}
|
||||
|
||||
async function listPublicGroups() {
|
||||
let div = document.getElementById('public-groups');
|
||||
let table = document.getElementById('public-groups-table');
|
||||
|
||||
let l;
|
||||
try {
|
||||
l = await (await fetch('/public-groups.json')).json();
|
||||
} catch(e) {
|
||||
console.error(e);
|
||||
l = [];
|
||||
}
|
||||
|
||||
if (l.length === 0) {
|
||||
table.textContent = '(No groups found.)';
|
||||
div.classList.remove('groups');
|
||||
div.classList.add('nogroups');
|
||||
return;
|
||||
}
|
||||
|
||||
div.classList.remove('nogroups');
|
||||
div.classList.add('groups');
|
||||
|
||||
for(let i = 0; i < l.length; i++) {
|
||||
let group = l[i];
|
||||
let tr = document.createElement('tr');
|
||||
let td = document.createElement('td');
|
||||
let a = document.createElement('a');
|
||||
a.textContent = group.name;
|
||||
a.href = '/group/' + encodeURIComponent(group.name);
|
||||
td.appendChild(a);
|
||||
tr.appendChild(td);
|
||||
let td2 = document.createElement('td');
|
||||
td2.textContent = `(${group.clientCount} clients)`;
|
||||
tr.appendChild(td2);
|
||||
table.appendChild(tr);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
listPublicGroups();
|
||||
181
static/sfu.css
Normal file
181
static/sfu.css
Normal file
|
|
@ -0,0 +1,181 @@
|
|||
#title {
|
||||
text-align: center;
|
||||
}
|
||||
|
||||
h1 {
|
||||
white-space: nowrap;
|
||||
}
|
||||
|
||||
#header {
|
||||
margin-left: 2%;
|
||||
}
|
||||
|
||||
#statdiv {
|
||||
white-space: nowrap;
|
||||
margin-bottom: 2pt;
|
||||
}
|
||||
|
||||
#errspan {
|
||||
margin-left: 1em;
|
||||
}
|
||||
|
||||
.connected {
|
||||
color: green;
|
||||
}
|
||||
|
||||
.disconnected {
|
||||
background-color: red;
|
||||
font-weight: bold;
|
||||
}
|
||||
|
||||
.userform {
|
||||
display: inline
|
||||
}
|
||||
|
||||
.userform-invisible {
|
||||
display: none;
|
||||
}
|
||||
|
||||
.disconnect-invisible {
|
||||
display: none;
|
||||
}
|
||||
|
||||
.error {
|
||||
color: red;
|
||||
font-weight: bold;
|
||||
}
|
||||
|
||||
.noerror {
|
||||
display: none;
|
||||
}
|
||||
|
||||
#main {
|
||||
display: flex;
|
||||
}
|
||||
|
||||
#users {
|
||||
width: 5%;
|
||||
margin-left: 2%;
|
||||
border: 1px solid;
|
||||
}
|
||||
|
||||
#anonymous-users {
|
||||
white-space: nowrap;
|
||||
}
|
||||
|
||||
#chatbox {
|
||||
width: 100%;
|
||||
}
|
||||
|
||||
#chat {
|
||||
display: flex;
|
||||
width: 20%;
|
||||
margin-left: 0.3em;
|
||||
border: 1px solid;
|
||||
height: 85vh;
|
||||
}
|
||||
|
||||
#inputform {
|
||||
display: flex;
|
||||
}
|
||||
|
||||
#box {
|
||||
height: 95%;
|
||||
overflow: auto;
|
||||
}
|
||||
|
||||
.message, message-me {
|
||||
margin: 0 0.5em 0 0.5em;
|
||||
}
|
||||
|
||||
.message-user {
|
||||
font-weight: bold;
|
||||
}
|
||||
|
||||
.message-content {
|
||||
line-height: 1.5;
|
||||
margin-left: 1em;
|
||||
}
|
||||
|
||||
.message-me-asterisk {
|
||||
margin-right: 0.5em;
|
||||
}
|
||||
|
||||
.message-me-user {
|
||||
font-weight: bold;
|
||||
margin-right: 0.5em;
|
||||
}
|
||||
|
||||
.message-me-content {
|
||||
}
|
||||
|
||||
#input {
|
||||
width: 100%;
|
||||
border: none;
|
||||
resize: none;
|
||||
overflow-y: hidden;
|
||||
}
|
||||
|
||||
#input:focus {
|
||||
outline: none;
|
||||
}
|
||||
|
||||
#inputbutton {
|
||||
background-color: white;
|
||||
border: none;
|
||||
margin-right: 0.2em;
|
||||
font-size: 1.5em;
|
||||
}
|
||||
|
||||
#inputbutton:focus {
|
||||
outline: none;
|
||||
}
|
||||
|
||||
#resizer {
|
||||
width: 8px;
|
||||
margin-left: -8px;
|
||||
z-index: 1000;
|
||||
}
|
||||
|
||||
#resizer:hover {
|
||||
cursor: ew-resize;
|
||||
}
|
||||
|
||||
#peers {
|
||||
margin-left: 1%;
|
||||
margin-right: 1%;
|
||||
white-space: nowrap;
|
||||
display: flex;
|
||||
flex-wrap: wrap;
|
||||
margin-bottom: 4px;
|
||||
}
|
||||
|
||||
.peer {
|
||||
display: flex;
|
||||
flex-direction: column;
|
||||
margin-right: 5px;
|
||||
margin-left: 5px;
|
||||
margin-bottom: 10px;
|
||||
max-height: 50%;
|
||||
}
|
||||
|
||||
.media {
|
||||
height: 400px;
|
||||
margin: auto;
|
||||
min-width: 4em;
|
||||
}
|
||||
|
||||
.label {
|
||||
text-align: center;
|
||||
height: 2em;
|
||||
margin-top: 5px;
|
||||
}
|
||||
|
||||
#inputform {
|
||||
width: 100%;
|
||||
}
|
||||
|
||||
#input {
|
||||
width: 85%;
|
||||
border: 1px solid;
|
||||
}
|
||||
57
static/sfu.html
Normal file
57
static/sfu.html
Normal file
|
|
@ -0,0 +1,57 @@
|
|||
<!DOCTYPE html>
|
||||
<html lang="en">
|
||||
<head>
|
||||
<title>SFU</title>
|
||||
<link rel="stylesheet" type="text/css" href="/common.css"/>
|
||||
<link rel="stylesheet" type="text/css" href="/sfu.css"/>
|
||||
<link rel="author" href="https://www.irif.fr/~jch/"/>
|
||||
</head>
|
||||
|
||||
<body>
|
||||
<h1 id="title">SFU</h1>
|
||||
|
||||
<div id="header">
|
||||
<div id="statdiv">
|
||||
<span id="statspan"></span>
|
||||
<form id="userform" class="userform">
|
||||
<label for="username">Username:</label>
|
||||
<input id="username" type="text" name="username"
|
||||
autocomplete="username"/>
|
||||
<label for="password">Password:</label>
|
||||
<input id="password" type="password" name="password"
|
||||
autocomplete="current-password"/>
|
||||
<input id="connectbutton" type="submit" value="Connect" disabled/>
|
||||
</form>
|
||||
<input id="disconnectbutton" class="disconnect-invisible"
|
||||
type="submit" value="Disconnect"/>
|
||||
<span id="errspan"></span>
|
||||
</div>
|
||||
|
||||
<div id="optionsdiv">
|
||||
<label for="presenterbox">Present:</label>
|
||||
<input id="presenterbox" type="checkbox"/>
|
||||
<label for="sharebox">Share screen:</label>
|
||||
<input id="sharebox" type="checkbox"/>
|
||||
</div>
|
||||
</div>
|
||||
|
||||
<div id="main">
|
||||
<div id="users"></div>
|
||||
<div id="chat">
|
||||
<div id="chatbox">
|
||||
<div id="box"></div>
|
||||
<form id="inputform">
|
||||
<textarea id="input"></textarea>
|
||||
<input id="inputbutton" type="submit" value="➤"/>
|
||||
</form>
|
||||
</div>
|
||||
<div id="resizer">
|
||||
</div>
|
||||
</div>
|
||||
|
||||
<div id="peers"></div>
|
||||
</div>
|
||||
|
||||
<script src="/sfu.js" defer></script>
|
||||
</body>
|
||||
</html>
|
||||
794
static/sfu.js
Normal file
794
static/sfu.js
Normal file
|
|
@ -0,0 +1,794 @@
|
|||
// Copyright (c) 2020 by Juliusz Chroboczek.
|
||||
|
||||
// This is not open source software. Copy it, and I'll break into your
|
||||
// house and tell your three year-old that Santa doesn't exist.
|
||||
|
||||
'use strict';
|
||||
|
||||
let myid;
|
||||
|
||||
let group;
|
||||
|
||||
let socket;
|
||||
|
||||
let up = {}, down = {};
|
||||
|
||||
let iceServers = [];
|
||||
|
||||
function toHex(array) {
|
||||
let a = new Uint8Array(array);
|
||||
let s = '';
|
||||
function hex(x) {
|
||||
let h = x.toString(16);
|
||||
if(h.length < 2)
|
||||
h = '0' + h;
|
||||
return h;
|
||||
}
|
||||
return a.reduce((x, y) => x + hex(y), '');
|
||||
}
|
||||
|
||||
function randomid() {
|
||||
let a = new Uint8Array(16);
|
||||
crypto.getRandomValues(a);
|
||||
return toHex(a);
|
||||
}
|
||||
|
||||
function Connection(id, pc) {
|
||||
this.id = id;
|
||||
this.label = null;
|
||||
this.pc = pc;
|
||||
this.stream = null;
|
||||
this.iceCandidates = [];
|
||||
}
|
||||
|
||||
Connection.prototype.close = function() {
|
||||
this.pc.close();
|
||||
send({
|
||||
type: 'close',
|
||||
id: this.id,
|
||||
});
|
||||
}
|
||||
|
||||
function setUserPass(username, password) {
|
||||
window.sessionStorage.setItem(
|
||||
'userpass',
|
||||
JSON.stringify({username: username, password: password}),
|
||||
);
|
||||
}
|
||||
|
||||
function getUserPass() {
|
||||
let userpass = window.sessionStorage.getItem('userpass');
|
||||
if(!userpass)
|
||||
return null;
|
||||
return JSON.parse(userpass);
|
||||
}
|
||||
|
||||
function getUsername() {
|
||||
let userpass = getUserPass();
|
||||
if(!userpass)
|
||||
return null;
|
||||
return userpass.username;
|
||||
}
|
||||
|
||||
function setConnected(connected) {
|
||||
let statspan = document.getElementById('statspan');
|
||||
let userform = document.getElementById('userform');
|
||||
let diconnect = document.getElementById('disconnectbutton');
|
||||
if(connected) {
|
||||
statspan.textContent = 'Connected';
|
||||
statspan.classList.remove('disconnected');
|
||||
statspan.classList.add('connected');
|
||||
userform.classList.add('userform-invisible');
|
||||
userform.classList.remove('userform');
|
||||
disconnectbutton.classList.remove('disconnect-invisible');
|
||||
} else {
|
||||
let userpass = getUserPass();
|
||||
document.getElementById('username').value =
|
||||
userpass ? userpass.username : '';
|
||||
document.getElementById('password').value =
|
||||
userpass ? userpass.password : '';
|
||||
statspan.textContent = 'Disconnected';
|
||||
statspan.classList.remove('connected');
|
||||
statspan.classList.add('disconnected');
|
||||
userform.classList.add('userform');
|
||||
userform.classList.remove('userform-invisible');
|
||||
disconnectbutton.classList.add('disconnect-invisible');
|
||||
}
|
||||
}
|
||||
|
||||
document.getElementById('presenterbox').onchange = function(e) {
|
||||
e.preventDefault();
|
||||
setLocalMedia();
|
||||
}
|
||||
|
||||
document.getElementById('sharebox').onchange = function(e) {
|
||||
e.preventDefault();
|
||||
setShareMedia();
|
||||
}
|
||||
|
||||
let localMediaId = null;
|
||||
|
||||
async function setLocalMedia() {
|
||||
if(!getUserPass())
|
||||
return;
|
||||
|
||||
if(!document.getElementById('presenterbox').checked) {
|
||||
if(localMediaId) {
|
||||
up[localMediaId].close();
|
||||
delete(up[localMediaId]);
|
||||
delMedia(localMediaId)
|
||||
localMediaId = null;
|
||||
}
|
||||
return;
|
||||
}
|
||||
|
||||
if(!localMediaId) {
|
||||
let constraints = {audio: true, video: true};
|
||||
let opts = {video: true, audio: true};
|
||||
let stream = null;
|
||||
try {
|
||||
stream = await navigator.mediaDevices.getUserMedia(constraints);
|
||||
} catch(e) {
|
||||
console.error(e);
|
||||
return;
|
||||
}
|
||||
localMediaId = await newUpStream();
|
||||
|
||||
let c = up[localMediaId];
|
||||
c.stream = stream;
|
||||
stream.getTracks().forEach(t => {
|
||||
c.pc.addTrack(t, stream);
|
||||
});
|
||||
await setMedia(localMediaId);
|
||||
}
|
||||
}
|
||||
|
||||
let shareMediaId = null;
|
||||
|
||||
async function setShareMedia() {
|
||||
if(!getUserPass())
|
||||
return;
|
||||
|
||||
if(!document.getElementById('sharebox').checked) {
|
||||
if(shareMediaId) {
|
||||
up[shareMediaId].close();
|
||||
delete(up[shareMediaId]);
|
||||
delMedia(shareMediaId)
|
||||
shareMediaId = null;
|
||||
}
|
||||
return;
|
||||
}
|
||||
if(!shareMediaId) {
|
||||
let constraints = {audio: true, video: true};
|
||||
let opts = {video: true, audio: true};
|
||||
let stream = null;
|
||||
try {
|
||||
stream = await navigator.mediaDevices.getDisplayMedia({});
|
||||
} catch(e) {
|
||||
console.error(e);
|
||||
return;
|
||||
}
|
||||
shareMediaId = await newUpStream();
|
||||
|
||||
let c = up[shareMediaId];
|
||||
c.stream = stream;
|
||||
stream.getTracks().forEach(t => {
|
||||
c.pc.addTrack(t, stream);
|
||||
});
|
||||
await setMedia(shareMediaId);
|
||||
}
|
||||
}
|
||||
|
||||
function setMedia(id) {
|
||||
let mine = true;
|
||||
let c = up[id];
|
||||
if(!c) {
|
||||
c = down[id];
|
||||
mine = false;
|
||||
}
|
||||
if(!c)
|
||||
throw new Error('Unknown connection');
|
||||
|
||||
let peersdiv = document.getElementById('peers');
|
||||
|
||||
let div = document.getElementById('peer-' + id);
|
||||
if(!div) {
|
||||
div = document.createElement('div');
|
||||
div.id = 'peer-' + id;
|
||||
div.classList.add('peer');
|
||||
peersdiv.appendChild(div);
|
||||
}
|
||||
|
||||
let media = document.getElementById('media-' + id);
|
||||
if(!media) {
|
||||
media = document.createElement('video');
|
||||
media.id = 'media-' + id;
|
||||
media.classList.add('media');
|
||||
media.autoplay = true;
|
||||
media.playsinline = true;
|
||||
media.controls = true;
|
||||
if(mine)
|
||||
media.muted = true;
|
||||
div.appendChild(media);
|
||||
}
|
||||
|
||||
let label = document.getElementById('label-' + id);
|
||||
if(!label) {
|
||||
label = document.createElement('div');
|
||||
label.id = 'label-' + id;
|
||||
label.classList.add('label');
|
||||
div.appendChild(label)
|
||||
}
|
||||
|
||||
media.srcObject = c.stream;
|
||||
setLabel(id);
|
||||
}
|
||||
|
||||
function delMedia(id) {
|
||||
let mediadiv = document.getElementById('peers');
|
||||
let peer = document.getElementById('peer-' + id);
|
||||
let media = document.getElementById('media-' + id);
|
||||
|
||||
media.srcObject = null;
|
||||
mediadiv.removeChild(peer);
|
||||
}
|
||||
|
||||
function setLabel(id) {
|
||||
let label = document.getElementById('label-' + id);
|
||||
if(!label)
|
||||
return;
|
||||
let l = down[id] ? down[id].label : null;
|
||||
label.textContent = l ? l : '';
|
||||
}
|
||||
|
||||
function serverConnect() {
|
||||
if(socket) {
|
||||
socket.close(1000, 'Reconnecting');
|
||||
socket = null;
|
||||
setConnected(false);
|
||||
}
|
||||
|
||||
try {
|
||||
socket = new WebSocket(
|
||||
`ws${location.protocol === 'https:' ? 's' : ''}://${location.host}/ws`,
|
||||
);
|
||||
} catch(e) {
|
||||
console.error(e);
|
||||
setConnected(false);
|
||||
return Promise.reject(e);
|
||||
}
|
||||
|
||||
return new Promise((resolve, reject) => {
|
||||
socket.onerror = function(e) {
|
||||
console.error(e);
|
||||
reject(e.error ? e.error : e);
|
||||
};
|
||||
socket.onopen = function(e) {
|
||||
resetUsers();
|
||||
setConnected(true);
|
||||
let up = getUserPass();
|
||||
send({
|
||||
type: 'handshake',
|
||||
id: myid,
|
||||
group: group,
|
||||
username: up.username,
|
||||
password: up.password,
|
||||
});
|
||||
resolve();
|
||||
};
|
||||
socket.onclose = function(e) {
|
||||
setConnected(false);
|
||||
document.getElementById('presenterbox').checked = false;
|
||||
setLocalMedia();
|
||||
document.getElementById('sharebox').checked = false;
|
||||
setShareMedia();
|
||||
reject(new Error('websocket close ' + e.code + ' ' + e.reason));
|
||||
};
|
||||
socket.onmessage = function(e) {
|
||||
let m = JSON.parse(e.data);
|
||||
switch(m.type) {
|
||||
case 'offer':
|
||||
gotOffer(m.id, m.offer);
|
||||
break;
|
||||
case 'answer':
|
||||
gotAnswer(m.id, m.answer);
|
||||
break;
|
||||
case 'close':
|
||||
gotClose(m.id);
|
||||
break;
|
||||
case 'ice':
|
||||
gotICE(m.id, m.candidate);
|
||||
break;
|
||||
case 'maxbitrate':
|
||||
setMaxBitrate(m.id, m.audiorate, m.videorate);
|
||||
break;
|
||||
case 'label':
|
||||
gotLabel(m.id, m.value);
|
||||
break;
|
||||
case 'user':
|
||||
gotUser(m.id, m.username, m.del);
|
||||
break;
|
||||
case 'chat':
|
||||
addToChatbox(m.id, m.username, m.value, m.me);
|
||||
break;
|
||||
default:
|
||||
console.warn('Unexpected server message', m.type);
|
||||
return;
|
||||
}
|
||||
};
|
||||
});
|
||||
}
|
||||
|
||||
async function gotOffer(id, offer) {
|
||||
let c = down[id];
|
||||
if(!c) {
|
||||
let pc = new RTCPeerConnection({
|
||||
iceServers: iceServers,
|
||||
});
|
||||
c = new Connection(id, pc);
|
||||
down[id] = c;
|
||||
|
||||
c.pc.onicecandidate = function(e) {
|
||||
if(!e.candidate)
|
||||
return;
|
||||
send({type: 'ice',
|
||||
id: id,
|
||||
candidate: e.candidate,
|
||||
});
|
||||
}
|
||||
|
||||
c.pc.ontrack = function(e) {
|
||||
c.stream = e.streams[0];
|
||||
setMedia(id);
|
||||
}
|
||||
}
|
||||
|
||||
await c.pc.setRemoteDescription(offer);
|
||||
await addIceCandidates(c);
|
||||
let answer = await c.pc.createAnswer();
|
||||
if(!answer)
|
||||
throw new Error("Didn't create answer")
|
||||
await c.pc.setLocalDescription(answer);
|
||||
send({
|
||||
type: 'answer',
|
||||
id: id,
|
||||
answer: answer,
|
||||
});
|
||||
}
|
||||
|
||||
function gotLabel(id, label) {
|
||||
let c = down[id];
|
||||
if(!c)
|
||||
throw new Error('Got label for unknown id');
|
||||
|
||||
c.label = label;
|
||||
setLabel(id);
|
||||
}
|
||||
|
||||
async function gotAnswer(id, answer) {
|
||||
let c = up[id];
|
||||
if(!c)
|
||||
throw new Error('unknown up stream');
|
||||
await c.pc.setRemoteDescription(answer);
|
||||
await addIceCandidates(c);
|
||||
}
|
||||
|
||||
function gotClose(id) {
|
||||
let c = down[id];
|
||||
if(!c)
|
||||
throw new Error('unknown down stream');
|
||||
delete(down[id]);
|
||||
c.close();
|
||||
delMedia(id);
|
||||
}
|
||||
|
||||
async function gotICE(id, candidate) {
|
||||
let conn = up[id];
|
||||
if(!conn)
|
||||
conn = down[id];
|
||||
if(!conn)
|
||||
throw new Error('unknown stream');
|
||||
if(conn.pc.remoteDescription)
|
||||
await conn.pc.addIceCandidate(candidate).catch(console.warn);
|
||||
else
|
||||
conn.iceCandidates.push(candidate)
|
||||
}
|
||||
|
||||
let maxaudiorate, maxvideorate;
|
||||
|
||||
async function setMaxBitrate(id, audio, video) {
|
||||
let conn = up[id];
|
||||
if(!conn)
|
||||
throw new Error("Setting bitrate of unknown id");
|
||||
|
||||
let senders = conn.pc.getSenders();
|
||||
for(let i = 0; i < senders.length; i++) {
|
||||
let s = senders[i];
|
||||
if(!s.track)
|
||||
return;
|
||||
let p = s.getParameters();
|
||||
let bitrate;
|
||||
if(s.track.kind == 'audio')
|
||||
bitrate = audio;
|
||||
else if(s.track.kind == 'video')
|
||||
bitrate = video;
|
||||
for(let j = 0; j < p.encodings.length; j++) {
|
||||
let e = p.encodings[j];
|
||||
if(bitrate)
|
||||
e.maxBitrate = bitrate;
|
||||
else
|
||||
delete(e.maxBitrate);
|
||||
await s.setParameters(p);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
async function addIceCandidates(conn) {
|
||||
let promises = []
|
||||
conn.iceCandidates.forEach(c => {
|
||||
promises.push(conn.pc.addIceCandidate(c).catch(console.warn));
|
||||
});
|
||||
conn.iceCandidates = [];
|
||||
return await Promise.all(promises);
|
||||
}
|
||||
|
||||
function send(m) {
|
||||
if(!m)
|
||||
throw(new Error('Sending null message'));
|
||||
return socket.send(JSON.stringify(m))
|
||||
}
|
||||
|
||||
let users = {};
|
||||
|
||||
function addUser(id, name) {
|
||||
if(!name)
|
||||
name = null;
|
||||
if(id in users)
|
||||
throw new Error('Duplicate user id');
|
||||
users[id] = name;
|
||||
|
||||
let div = document.getElementById('users');
|
||||
let anon = document.getElementById('anonymous-users');
|
||||
let user = document.createElement('div');
|
||||
user.id = 'user-' + id;
|
||||
user.textContent = name ? name : '(anon)';
|
||||
div.appendChild(user);
|
||||
}
|
||||
|
||||
function delUser(id, name) {
|
||||
if(!name)
|
||||
name = null;
|
||||
if(!id in users)
|
||||
throw new Error('Unknown user id');
|
||||
if(users[id] !== name)
|
||||
throw new Error('Inconsistent user name');
|
||||
delete(users[id]);
|
||||
let div = document.getElementById('users');
|
||||
let user = document.getElementById('user-' + id);
|
||||
div.removeChild(user);
|
||||
}
|
||||
|
||||
function resetUsers() {
|
||||
for(let id in users)
|
||||
delUser(id, users[id]);
|
||||
}
|
||||
|
||||
function gotUser(id, name, del) {
|
||||
if(del)
|
||||
delUser(id, name);
|
||||
else
|
||||
addUser(id, name);
|
||||
}
|
||||
|
||||
const urlRegexp = /https?:\/\/[-a-zA-Z0-9@:%/._\+~#=?]+[-a-zA-Z0-9@:%/_\+~#=]/g;
|
||||
|
||||
function formatLine(line) {
|
||||
let r = new RegExp(urlRegexp);
|
||||
let result = [];
|
||||
let pos = 0;
|
||||
while(true) {
|
||||
let m = r.exec(line);
|
||||
if(!m)
|
||||
break;
|
||||
result.push(document.createTextNode(line.slice(pos, m.index)));
|
||||
let a = document.createElement('a');
|
||||
a.href = m[0];
|
||||
a.textContent = m[0];
|
||||
a.target = '_blank';
|
||||
a.rel = 'noreferrer noopener';
|
||||
result.push(a);
|
||||
pos = m.index + m[0].length;
|
||||
}
|
||||
result.push(document.createTextNode(line.slice(pos)));
|
||||
return result;
|
||||
}
|
||||
|
||||
function formatLines(lines) {
|
||||
let elts = [];
|
||||
if(lines.length > 0)
|
||||
elts = formatLine(lines[0]);
|
||||
for(let i = 1; i < lines.length; i++) {
|
||||
elts.push(document.createElement('br'));
|
||||
elts = elts.concat(formatLine(lines[i]));
|
||||
}
|
||||
let elt = document.createElement('p');
|
||||
elts.forEach(e => elt.appendChild(e));
|
||||
return elt;
|
||||
}
|
||||
|
||||
let lastMessage = {};
|
||||
|
||||
function addToChatbox(peerId, nick, message, me){
|
||||
let container = document.createElement('div');
|
||||
container.classList.add('message');
|
||||
if(!me) {
|
||||
let p = formatLines(message.split('\n'));
|
||||
if (lastMessage.nick !== nick || lastMessage.peerId !== peerId) {
|
||||
let user = document.createElement('p');
|
||||
user.textContent = nick;
|
||||
user.classList.add('message-user');
|
||||
container.appendChild(user);
|
||||
}
|
||||
p.classList.add('message-content');
|
||||
container.appendChild(p);
|
||||
lastMessage.nick = nick;
|
||||
lastMessage.peerId = peerId;
|
||||
} else {
|
||||
let asterisk = document.createElement('span');
|
||||
asterisk.textContent = '*';
|
||||
asterisk.classList.add('message-me-asterisk');
|
||||
let user = document.createElement('span');
|
||||
user.textContent = nick;
|
||||
user.classList.add('message-me-user');
|
||||
let content = document.createElement('span');
|
||||
formatLine(message).forEach(elt => {
|
||||
content.appendChild(elt);
|
||||
});
|
||||
content.classList.add('message-me-content');
|
||||
container.appendChild(asterisk);
|
||||
container.appendChild(user);
|
||||
container.appendChild(content);
|
||||
container.classList.add('message-me');
|
||||
delete(lastMessage.nick);
|
||||
delete(lastMessage.peerId);
|
||||
}
|
||||
|
||||
document.getElementById('box').appendChild(container);
|
||||
|
||||
if(box.scrollHeight > box.clientHeight) {
|
||||
box.scrollTop = box.scrollHeight - box.clientHeight;
|
||||
}
|
||||
|
||||
return message;
|
||||
}
|
||||
|
||||
function handleInput() {
|
||||
let username = getUsername();
|
||||
if(!username) {
|
||||
displayError("Sorry, you're anonymous, you cannot chat");
|
||||
return;
|
||||
}
|
||||
|
||||
let input = document.getElementById('input');
|
||||
let data = input.value;
|
||||
input.value = '';
|
||||
|
||||
let message, me;
|
||||
|
||||
if(data === '')
|
||||
return;
|
||||
|
||||
if(data.charAt(0) === '/') {
|
||||
if(data.charAt(1) === '/') {
|
||||
message = data.substring(1);
|
||||
me = false;
|
||||
} else {
|
||||
let space, cmd, rest;
|
||||
space = data.indexOf(' ');
|
||||
if(space < 0) {
|
||||
cmd = data;
|
||||
rest = '';
|
||||
} else {
|
||||
cmd = data.slice(0, space);
|
||||
rest = data.slice(space + 1).trim();
|
||||
}
|
||||
|
||||
switch(cmd) {
|
||||
case '/nick':
|
||||
setNick(rest);
|
||||
storeNick(rest);
|
||||
return;
|
||||
case '/me':
|
||||
message = rest;
|
||||
me = true;
|
||||
break;
|
||||
default:
|
||||
displayError('Uknown command ' + cmd);
|
||||
return;
|
||||
}
|
||||
}
|
||||
} else {
|
||||
message = data;
|
||||
me = false;
|
||||
}
|
||||
|
||||
addToChatbox(myid, username, message, me);
|
||||
send({
|
||||
type: 'chat',
|
||||
username: username,
|
||||
value: message,
|
||||
me: me,
|
||||
});
|
||||
}
|
||||
|
||||
document.getElementById('inputform').onsubmit = function(e) {
|
||||
e.preventDefault();
|
||||
handleInput();
|
||||
};
|
||||
|
||||
document.getElementById('input').onkeypress = function(e) {
|
||||
if(e.key === 'Enter' && !e.ctrlKey && !e.shiftKey && !e.metaKey) {
|
||||
e.preventDefault();
|
||||
handleInput();
|
||||
}
|
||||
}
|
||||
|
||||
function chatResizer(e) {
|
||||
e.preventDefault();
|
||||
let chat = document.getElementById('chat');
|
||||
let start_x = e.clientX;
|
||||
let start_width = parseFloat(
|
||||
document.defaultView.getComputedStyle(chat).width.replace('px', ''),
|
||||
);
|
||||
let inputbutton = document.getElementById('inputbutton');
|
||||
function start_drag(e) {
|
||||
let width = start_width + e.clientX - start_x;
|
||||
if(width < 40)
|
||||
inputbutton.style.display = 'none';
|
||||
else
|
||||
inputbutton.style.display = 'inline';
|
||||
chat.style.width = width + 'px';
|
||||
}
|
||||
function stop_drag(e) {
|
||||
document.documentElement.removeEventListener(
|
||||
'mousemove', start_drag, false,
|
||||
);
|
||||
document.documentElement.removeEventListener(
|
||||
'mouseup', stop_drag, false,
|
||||
);
|
||||
}
|
||||
|
||||
document.documentElement.addEventListener(
|
||||
'mousemove', start_drag, false,
|
||||
);
|
||||
document.documentElement.addEventListener(
|
||||
'mouseup', stop_drag, false,
|
||||
);
|
||||
}
|
||||
|
||||
document.getElementById('resizer').addEventListener('mousedown', chatResizer, false);
|
||||
|
||||
async function newUpStream() {
|
||||
let id = randomid();
|
||||
if(up[id])
|
||||
throw new Error('Eek!');
|
||||
let pc = new RTCPeerConnection({
|
||||
iceServers: iceServers,
|
||||
});
|
||||
if(!pc)
|
||||
throw new Error("Couldn't create peer connection")
|
||||
up[id] = new Connection(id, pc);
|
||||
|
||||
pc.onnegotiationneeded = e => negotiate(id);
|
||||
|
||||
pc.onicecandidate = function(e) {
|
||||
if(!e.candidate)
|
||||
return;
|
||||
send({type: 'ice',
|
||||
id: id,
|
||||
candidate: e.candidate,
|
||||
});
|
||||
}
|
||||
|
||||
pc.ontrack = console.error;
|
||||
|
||||
return id;
|
||||
}
|
||||
|
||||
async function negotiate(id) {
|
||||
let c = up[id];
|
||||
if(!c)
|
||||
throw new Error('unknown connection');
|
||||
let offer = await c.pc.createOffer({});
|
||||
if(!offer)
|
||||
throw(new Error("Didn't create offer"));
|
||||
await c.pc.setLocalDescription(offer);
|
||||
send({
|
||||
type: 'offer',
|
||||
id: id,
|
||||
offer: offer,
|
||||
});
|
||||
}
|
||||
|
||||
let errorTimeout = null;
|
||||
|
||||
function setErrorTimeout(ms) {
|
||||
if(errorTimeout) {
|
||||
clearTimeout(errorTimeout);
|
||||
errorTimeout = null;
|
||||
}
|
||||
if(ms) {
|
||||
errorTimeout = setTimeout(clearError, ms);
|
||||
}
|
||||
}
|
||||
|
||||
function displayError(message) {
|
||||
let errspan = document.getElementById('errspan');
|
||||
errspan.textContent = message;
|
||||
errspan.classList.remove('noerror');
|
||||
errspan.classList.add('error');
|
||||
setErrorTimeout(8000);
|
||||
}
|
||||
|
||||
function displayWarning(message) {
|
||||
// don't overwrite real errors
|
||||
if(!errorTimeout)
|
||||
return displayError(message);
|
||||
}
|
||||
|
||||
function clearError() {
|
||||
let errspan = document.getElementById('errspan');
|
||||
errspan.textContent = '';
|
||||
errspan.classList.remove('error');
|
||||
errspan.classList.add('noerror');
|
||||
setErrorTimeout(null);
|
||||
}
|
||||
|
||||
async function getIceServers() {
|
||||
let r = await fetch('/ice-servers.json');
|
||||
if(!r.ok)
|
||||
throw new Error("Couldn't fetch ICE servers: " +
|
||||
r.status + ' ' + r.statusText);
|
||||
let servers = await r.json();
|
||||
if(!(servers instanceof Array))
|
||||
throw new Error("couldn't parse ICE servers");
|
||||
iceServers = servers;
|
||||
}
|
||||
|
||||
async function doConnect() {
|
||||
await serverConnect();
|
||||
await setLocalMedia();
|
||||
await setShareMedia();
|
||||
}
|
||||
|
||||
document.getElementById('userform').onsubmit = async function(e) {
|
||||
e.preventDefault();
|
||||
let username = document.getElementById('username').value.trim();
|
||||
let password = document.getElementById('password').value;
|
||||
setUserPass(username, password);
|
||||
await doConnect();
|
||||
}
|
||||
|
||||
document.getElementById('disconnectbutton').onclick = function(e) {
|
||||
socket.close();
|
||||
}
|
||||
|
||||
|
||||
function start() {
|
||||
group = decodeURIComponent(location.pathname.replace(/^\/[a-z]*\//, ''));
|
||||
let title = document.getElementById('title');
|
||||
if(group !== '')
|
||||
title.textContent = group.charAt(0).toUpperCase() + group.slice(1);
|
||||
|
||||
myid = randomid();
|
||||
|
||||
getIceServers().catch(console.error).then(c => {
|
||||
document.getElementById('connectbutton').disabled = false;
|
||||
}).then(c => {
|
||||
let userpass = getUserPass();
|
||||
if(userpass)
|
||||
doConnect();
|
||||
});
|
||||
}
|
||||
|
||||
start();
|
||||
Loading…
Reference in a new issue