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Merge branch 'modular' into master

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This commit is contained in:
Juliusz Chroboczek 2020-09-18 10:33:17 +02:00
commit 2347417f83
15 changed files with 586 additions and 555 deletions
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1
.gitignore vendored
View file

@ -3,3 +3,4 @@ data/*.pem
sfu
passwd
groups/*.json
static/*.d.ts

25
client.go
View file

@ -1,25 +0,0 @@
package main
type clientCredentials struct {
Username string `json:"username,omitempty"`
Password string `json:"password,omitempty"`
}
type clientPermissions struct {
Op bool `json:"op,omitempty"`
Present bool `json:"present,omitempty"`
Record bool `json:"record,omitempty"`
}
type client interface {
Group() *group
Id() string
Credentials() clientCredentials
SetPermissions(clientPermissions)
pushConn(id string, conn upConnection, tracks []upTrack, label string) error
pushClient(id, username string, add bool) error
}
type kickable interface {
kick(message string) error
}

43
conn.go
View file

@ -1,43 +0,0 @@
// 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 (
"errors"
"github.com/pion/rtp"
"github.com/pion/webrtc/v3"
)
var ErrConnectionClosed = errors.New("connection is closed")
var ErrKeyframeNeeded = errors.New("keyframe needed")
type upConnection interface {
addLocal(downConnection) error
delLocal(downConnection) bool
Id() string
Label() string
}
type upTrack interface {
addLocal(downTrack) error
delLocal(downTrack) bool
Label() string
Codec() *webrtc.RTPCodec
// get a recent packet. Returns 0 if the packet is not in cache.
getRTP(seqno uint16, result []byte) uint16
}
type downConnection interface {
GetMaxBitrate(now uint64) uint64
}
type downTrack interface {
WriteRTP(packat *rtp.Packet) error
Accumulate(bytes uint32)
setTimeOffset(ntp uint64, rtp uint32)
setCname(string)
}

48
conn/conn.go Normal file
View file

@ -0,0 +1,48 @@
// 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 conn defines interfaces for connections and tracks.
package conn
import (
"errors"
"github.com/pion/rtp"
"github.com/pion/webrtc/v3"
)
var ErrConnectionClosed = errors.New("connection is closed")
var ErrKeyframeNeeded = errors.New("keyframe needed")
// Type Up represents a connection in the client to server direction.
type Up interface {
AddLocal(Down) error
DelLocal(Down) bool
Id() string
Label() string
}
// Type UpTrack represents a track in the client to server direction.
type UpTrack interface {
AddLocal(DownTrack) error
DelLocal(DownTrack) bool
Label() string
Codec() *webrtc.RTPCodec
// get a recent packet. Returns 0 if the packet is not in cache.
GetRTP(seqno uint16, result []byte) uint16
}
// Type Down represents a connection in the server to client direction.
type Down interface {
GetMaxBitrate(now uint64) uint64
}
// Type DownTrack represents a track in the server to client direction.
type DownTrack interface {
WriteRTP(packat *rtp.Packet) error
Accumulate(bytes uint32)
SetTimeOffset(ntp uint64, rtp uint32)
SetCname(string)
}

80
disk.go → disk/disk.go
View file

@ -1,11 +1,12 @@
package main
package disk
import (
crand "crypto/rand"
"errors"
"fmt"
"os"
"path/filepath"
"strconv"
"encoding/hex"
"sync"
"time"
@ -14,10 +15,15 @@ import (
"github.com/pion/rtp/codecs"
"github.com/pion/webrtc/v3"
"github.com/pion/webrtc/v3/pkg/media/samplebuilder"
"sfu/conn"
"sfu/group"
)
type diskClient struct {
group *group
var Directory string
type Client struct {
group *group.Group
id string
mu sync.Mutex
@ -25,45 +31,37 @@ type diskClient struct {
closed bool
}
var idCounter struct {
mu sync.Mutex
counter int
}
func newId() string {
idCounter.mu.Lock()
defer idCounter.mu.Unlock()
s := strconv.FormatInt(int64(idCounter.counter), 16)
idCounter.counter++
return s
b := make([]byte, 16)
crand.Read(b)
return hex.EncodeToString(b)
}
func NewDiskClient(g *group) *diskClient {
return &diskClient{group: g, id: newId()}
func New(g *group.Group) *Client {
return &Client{group: g, id: newId()}
}
func (client *diskClient) Group() *group {
func (client *Client) Group() *group.Group {
return client.group
}
func (client *diskClient) Id() string {
func (client *Client) Id() string {
return client.id
}
func (client *diskClient) Credentials() clientCredentials {
return clientCredentials{"RECORDING", ""}
func (client *Client) Credentials() group.ClientCredentials {
return group.ClientCredentials{"RECORDING", ""}
}
func (client *diskClient) SetPermissions(perms clientPermissions) {
func (client *Client) SetPermissions(perms group.ClientPermissions) {
return
}
func (client *diskClient) pushClient(id, username string, add bool) error {
func (client *Client) PushClient(id, username string, add bool) error {
return nil
}
func (client *diskClient) Close() error {
func (client *Client) Close() error {
client.mu.Lock()
defer client.mu.Unlock()
@ -75,13 +73,13 @@ func (client *diskClient) Close() error {
return nil
}
func (client *diskClient) kick(message string) error {
func (client *Client) kick(message string) error {
err := client.Close()
delClient(client)
group.DelClient(client)
return err
}
func (client *diskClient) pushConn(id string, conn upConnection, tracks []upTrack, label string) error {
func (client *Client) PushConn(id string, up conn.Up, tracks []conn.UpTrack, label string) error {
client.mu.Lock()
defer client.mu.Unlock()
@ -95,11 +93,11 @@ func (client *diskClient) pushConn(id string, conn upConnection, tracks []upTrac
delete(client.down, id)
}
if conn == nil {
if up == nil {
return nil
}
directory := filepath.Join(recordingsDir, client.group.name)
directory := filepath.Join(Directory, client.group.Name())
err := os.MkdirAll(directory, 0700)
if err != nil {
return err
@ -109,12 +107,12 @@ func (client *diskClient) pushConn(id string, conn upConnection, tracks []upTrac
client.down = make(map[string]*diskConn)
}
down, err := newDiskConn(directory, label, conn, tracks)
down, err := newDiskConn(directory, label, up, tracks)
if err != nil {
return err
}
client.down[conn.Id()] = down
client.down[up.Id()] = down
return nil
}
@ -125,7 +123,7 @@ type diskConn struct {
mu sync.Mutex
file *os.File
remote upConnection
remote conn.Up
tracks []*diskTrack
width, height uint32
}
@ -150,7 +148,7 @@ func (conn *diskConn) reopen() error {
}
func (conn *diskConn) Close() error {
conn.remote.delLocal(conn)
conn.remote.DelLocal(conn)
conn.mu.Lock()
tracks := make([]*diskTrack, 0, len(conn.tracks))
@ -164,7 +162,7 @@ func (conn *diskConn) Close() error {
conn.mu.Unlock()
for _, t := range tracks {
t.remote.delLocal(t)
t.remote.DelLocal(t)
}
return nil
}
@ -196,7 +194,7 @@ func openDiskFile(directory, label string) (*os.File, error) {
}
type diskTrack struct {
remote upTrack
remote conn.UpTrack
conn *diskConn
writer webm.BlockWriteCloser
@ -206,7 +204,7 @@ type diskTrack struct {
origin uint64
}
func newDiskConn(directory, label string, up upConnection, remoteTracks []upTrack) (*diskConn, error) {
func newDiskConn(directory, label string, up conn.Up, remoteTracks []conn.UpTrack) (*diskConn, error) {
conn := diskConn{
directory: directory,
label: label,
@ -231,10 +229,10 @@ func newDiskConn(directory, label string, up upConnection, remoteTracks []upTrac
conn: &conn,
}
conn.tracks = append(conn.tracks, track)
remote.addLocal(track)
remote.AddLocal(track)
}
err := up.addLocal(&conn)
err := up.AddLocal(&conn)
if err != nil {
return nil, err
}
@ -242,10 +240,10 @@ func newDiskConn(directory, label string, up upConnection, remoteTracks []upTrac
return &conn, nil
}
func (t *diskTrack) setTimeOffset(ntp uint64, rtp uint32) {
func (t *diskTrack) SetTimeOffset(ntp uint64, rtp uint32) {
}
func (t *diskTrack) setCname(string) {
func (t *diskTrack) SetCname(string) {
}
func clonePacket(packet *rtp.Packet) *rtp.Packet {
@ -310,7 +308,7 @@ func (t *diskTrack) WriteRTP(packet *rtp.Packet) error {
if t.writer == nil {
if !keyframe {
return ErrKeyframeNeeded
return conn.ErrKeyframeNeeded
}
return nil
}

29
group/client.go Normal file
View file

@ -0,0 +1,29 @@
package group
import (
"sfu/conn"
)
type ClientCredentials struct {
Username string `json:"username,omitempty"`
Password string `json:"password,omitempty"`
}
type ClientPermissions struct {
Op bool `json:"op,omitempty"`
Present bool `json:"present,omitempty"`
Record bool `json:"record,omitempty"`
}
type Client interface {
Group() *Group
Id() string
Credentials() ClientCredentials
SetPermissions(ClientPermissions)
PushConn(id string, conn conn.Up, tracks []conn.UpTrack, label string) error
PushClient(id, username string, add bool) error
}
type Kickable interface {
Kick(message string) error
}

205
group.go → group/group.go
View file

@ -3,7 +3,7 @@
// 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
package group
import (
"encoding/json"
@ -18,18 +18,60 @@ import (
"github.com/pion/webrtc/v3"
)
type chatHistoryEntry struct {
id string
user string
kind string
value string
var Directory string
type UserError string
func (err UserError) Error() string {
return string(err)
}
type ProtocolError string
func (err ProtocolError) Error() string {
return string(err)
}
var IceFilename string
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 ChatHistoryEntry struct {
Id string
User string
Kind string
Value string
}
const (
minBitrate = 200000
MinBitrate = 200000
)
type group struct {
type Group struct {
name string
mu sync.Mutex
@ -37,35 +79,39 @@ type group struct {
// indicates that the group no longer exists, but it still has clients
dead bool
locked bool
clients map[string]client
history []chatHistoryEntry
clients map[string]Client
history []ChatHistoryEntry
}
func (g *group) Locked() bool {
func (g *Group) Name() string {
return g.name
}
func (g *Group) Locked() bool {
g.mu.Lock()
defer g.mu.Unlock()
return g.locked
}
func (g *group) SetLocked(locked bool) {
func (g *Group) SetLocked(locked bool) {
g.mu.Lock()
defer g.mu.Unlock()
g.locked = locked
}
func (g *group) Public() bool {
func (g *Group) Public() bool {
g.mu.Lock()
defer g.mu.Unlock()
return g.description.Public
}
func (g *group) Redirect() string {
func (g *Group) Redirect() string {
g.mu.Lock()
defer g.mu.Unlock()
return g.description.Redirect
}
func (g *group) AllowRecording() bool {
func (g *Group) AllowRecording() bool {
g.mu.Lock()
defer g.mu.Unlock()
return g.description.AllowRecording
@ -73,20 +119,20 @@ func (g *group) AllowRecording() bool {
var groups struct {
mu sync.Mutex
groups map[string]*group
groups map[string]*Group
api *webrtc.API
}
func (g *group) API() *webrtc.API {
func (g *Group) API() *webrtc.API {
return groups.api
}
func addGroup(name string, desc *groupDescription) (*group, error) {
func Add(name string, desc *groupDescription) (*Group, error) {
groups.mu.Lock()
defer groups.mu.Unlock()
if groups.groups == nil {
groups.groups = make(map[string]*group)
groups.groups = make(map[string]*Group)
s := webrtc.SettingEngine{}
m := webrtc.MediaEngine{}
m.RegisterCodec(webrtc.NewRTPVP8CodecExt(
@ -113,15 +159,15 @@ func addGroup(name string, desc *groupDescription) (*group, error) {
g := groups.groups[name]
if g == nil {
if desc == nil {
desc, err = getDescription(name)
desc, err = GetDescription(name)
if err != nil {
return nil, err
}
}
g = &group{
g = &Group{
name: name,
description: desc,
clients: make(map[string]client),
clients: make(map[string]Client),
}
groups.groups[name] = g
return g, nil
@ -147,7 +193,7 @@ func addGroup(name string, desc *groupDescription) (*group, error) {
return nil, err
}
if changed {
desc, err := getDescription(name)
desc, err := GetDescription(name)
if err != nil {
if !os.IsNotExist(err) {
log.Printf("Reading group %v: %v",
@ -167,7 +213,7 @@ func addGroup(name string, desc *groupDescription) (*group, error) {
return g, nil
}
func rangeGroups(f func(g *group) bool) {
func Range(f func(g *Group) bool) {
groups.mu.Lock()
defer groups.mu.Unlock()
@ -179,17 +225,17 @@ func rangeGroups(f func(g *group) bool) {
}
}
func getGroupNames() []string {
func GetNames() []string {
names := make([]string, 0)
rangeGroups(func(g *group) bool {
Range(func(g *Group) bool {
names = append(names, g.name)
return true
})
return names
}
func getGroup(name string) *group {
func Get(name string) *Group {
groups.mu.Lock()
defer groups.mu.Unlock()
@ -210,8 +256,8 @@ func delGroupUnlocked(name string) bool {
return true
}
func addClient(name string, c client) (*group, error) {
g, err := addGroup(name, nil)
func AddClient(name string, c Client) (*Group, error) {
g, err := Add(name, nil)
if err != nil {
return nil, err
}
@ -219,7 +265,7 @@ func addClient(name string, c client) (*group, error) {
g.mu.Lock()
defer g.mu.Unlock()
perms, err := getPermission(g.description, c.Credentials())
perms, err := g.description.GetPermission(c.Credentials())
if err != nil {
return nil, err
}
@ -227,37 +273,34 @@ func addClient(name string, c client) (*group, error) {
c.SetPermissions(perms)
if !perms.Op && g.locked {
return nil, userError("group is locked")
return nil, UserError("group is locked")
}
if !perms.Op && g.description.MaxClients > 0 {
if len(g.clients) >= g.description.MaxClients {
return nil, userError("too many users")
return nil, UserError("too many users")
}
}
if g.clients[c.Id()] != nil {
return nil, protocolError("duplicate client id")
return nil, ProtocolError("duplicate client id")
}
g.clients[c.Id()] = c
go func(clients []client) {
go func(clients []Client) {
u := c.Credentials().Username
c.pushClient(c.Id(), u, true)
c.PushClient(c.Id(), u, true)
for _, cc := range clients {
uu := cc.Credentials().Username
err := c.pushClient(cc.Id(), uu, true)
if err == ErrClientDead {
return
}
cc.pushClient(c.Id(), u, true)
c.PushClient(cc.Id(), uu, true)
cc.PushClient(c.Id(), u, true)
}
}(g.getClientsUnlocked(c))
return g, nil
}
func delClient(c client) {
func DelClient(c Client) {
g := c.Group()
if g == nil {
return
@ -271,21 +314,21 @@ func delClient(c client) {
}
delete(g.clients, c.Id())
go func(clients []client) {
go func(clients []Client) {
for _, cc := range clients {
cc.pushClient(c.Id(), c.Credentials().Username, false)
cc.PushClient(c.Id(), c.Credentials().Username, false)
}
}(g.getClientsUnlocked(nil))
}
func (g *group) getClients(except client) []client {
func (g *Group) GetClients(except Client) []Client {
g.mu.Lock()
defer g.mu.Unlock()
return g.getClientsUnlocked(except)
}
func (g *group) getClientsUnlocked(except client) []client {
clients := make([]client, 0, len(g.clients))
func (g *Group) getClientsUnlocked(except Client) []Client {
clients := make([]Client, 0, len(g.clients))
for _, c := range g.clients {
if c != except {
clients = append(clients, c)
@ -294,13 +337,13 @@ func (g *group) getClientsUnlocked(except client) []client {
return clients
}
func (g *group) getClient(id string) client {
func (g *Group) GetClient(id string) Client {
g.mu.Lock()
defer g.mu.Unlock()
return g.getClientUnlocked(id)
}
func (g *group) getClientUnlocked(id string) client {
func (g *Group) getClientUnlocked(id string) Client {
for idd, c := range g.clients {
if idd == id {
return c
@ -309,7 +352,7 @@ func (g *group) getClientUnlocked(id string) client {
return nil
}
func (g *group) Range(f func(c client) bool) {
func (g *Group) Range(f func(c Client) bool) {
g.mu.Lock()
defer g.mu.Unlock()
for _, c := range g.clients {
@ -320,11 +363,11 @@ func (g *group) Range(f func(c client) bool) {
}
}
func (g *group) shutdown(message string) {
g.Range(func(c client) bool {
cc, ok := c.(kickable)
func (g *Group) Shutdown(message string) {
g.Range(func(c Client) bool {
cc, ok := c.(Kickable)
if ok {
cc.kick(message)
cc.Kick(message)
}
return true
})
@ -332,13 +375,13 @@ func (g *group) shutdown(message string) {
const maxChatHistory = 20
func (g *group) clearChatHistory() {
func (g *Group) ClearChatHistory() {
g.mu.Lock()
defer g.mu.Unlock()
g.history = nil
}
func (g *group) addToChatHistory(id, user, kind, value string) {
func (g *Group) AddToChatHistory(id, user, kind, value string) {
g.mu.Lock()
defer g.mu.Unlock()
@ -347,20 +390,20 @@ func (g *group) addToChatHistory(id, user, kind, value string) {
g.history = g.history[:len(g.history)-1]
}
g.history = append(g.history,
chatHistoryEntry{id: id, user: user, kind: kind, value: value},
ChatHistoryEntry{Id: id, User: user, Kind: kind, Value: value},
)
}
func (g *group) getChatHistory() []chatHistoryEntry {
func (g *Group) GetChatHistory() []ChatHistoryEntry {
g.mu.Lock()
defer g.mu.Unlock()
h := make([]chatHistoryEntry, len(g.history))
h := make([]ChatHistoryEntry, len(g.history))
copy(h, g.history)
return h
}
func matchUser(user clientCredentials, users []clientCredentials) (bool, bool) {
func matchUser(user ClientCredentials, users []ClientCredentials) (bool, bool) {
for _, u := range users {
if u.Username == "" {
if u.Password == "" || u.Password == user.Password {
@ -383,13 +426,13 @@ type groupDescription struct {
MaxClients int `json:"max-clients,omitempty"`
AllowAnonymous bool `json:"allow-anonymous,omitempty"`
AllowRecording bool `json:"allow-recording,omitempty"`
Op []clientCredentials `json:"op,omitempty"`
Presenter []clientCredentials `json:"presenter,omitempty"`
Other []clientCredentials `json:"other,omitempty"`
Op []ClientCredentials `json:"op,omitempty"`
Presenter []ClientCredentials `json:"presenter,omitempty"`
Other []ClientCredentials `json:"other,omitempty"`
}
func descriptionChanged(name string, old *groupDescription) (bool, error) {
fi, err := os.Stat(filepath.Join(groupsDir, name+".json"))
fi, err := os.Stat(filepath.Join(Directory, name+".json"))
if err != nil {
return false, err
}
@ -399,8 +442,8 @@ func descriptionChanged(name string, old *groupDescription) (bool, error) {
return false, err
}
func getDescription(name string) (*groupDescription, error) {
r, err := os.Open(filepath.Join(groupsDir, name+".json"))
func GetDescription(name string) (*groupDescription, error) {
r, err := os.Open(filepath.Join(Directory, name+".json"))
if err != nil {
return nil, err
}
@ -424,10 +467,10 @@ func getDescription(name string) (*groupDescription, error) {
return &desc, nil
}
func getPermission(desc *groupDescription, creds clientCredentials) (clientPermissions, error) {
var p clientPermissions
func (desc *groupDescription) GetPermission (creds ClientCredentials) (ClientPermissions, error) {
var p ClientPermissions
if !desc.AllowAnonymous && creds.Username == "" {
return p, userError("anonymous users not allowed in this group, please choose a username")
return p, UserError("anonymous users not allowed in this group, please choose a username")
}
if found, good := matchUser(creds, desc.Op); found {
if good {
@ -438,34 +481,34 @@ func getPermission(desc *groupDescription, creds clientCredentials) (clientPermi
}
return p, nil
}
return p, userError("not authorised")
return p, UserError("not authorised")
}
if found, good := matchUser(creds, desc.Presenter); found {
if good {
p.Present = true
return p, nil
}
return p, userError("not authorised")
return p, UserError("not authorised")
}
if found, good := matchUser(creds, desc.Other); found {
if good {
return p, nil
}
return p, userError("not authorised")
return p, UserError("not authorised")
}
return p, userError("not authorised")
return p, UserError("not authorised")
}
type publicGroup struct {
type Public struct {
Name string `json:"name"`
ClientCount int `json:"clientCount"`
}
func getPublicGroups() []publicGroup {
gs := make([]publicGroup, 0)
rangeGroups(func(g *group) bool {
func GetPublic() []Public {
gs := make([]Public, 0)
Range(func(g *Group) bool {
if g.Public() {
gs = append(gs, publicGroup{
gs = append(gs, Public{
Name: g.name,
ClientCount: len(g.clients),
})
@ -478,8 +521,8 @@ func getPublicGroups() []publicGroup {
return gs
}
func readPublicGroups() {
dir, err := os.Open(groupsDir)
func ReadPublicGroups() {
dir, err := os.Open(Directory)
if err != nil {
return
}
@ -496,7 +539,7 @@ func readPublicGroups() {
continue
}
name := fi.Name()[:len(fi.Name())-5]
desc, err := getDescription(name)
desc, err := GetDescription(name)
if err != nil {
if !os.IsNotExist(err) {
log.Printf("Reading group %v: %v", name, err)
@ -504,7 +547,7 @@ func readPublicGroups() {
continue
}
if desc.Public {
addGroup(name, desc)
Add(name, desc)
}
}
}

103
rtpconn.go → rtpconn/rtpconn.go
View file

@ -1,9 +1,4 @@
// 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
package rtpconn
import (
"errors"
@ -14,14 +9,16 @@ import (
"sync/atomic"
"time"
"sfu/estimator"
"sfu/jitter"
"sfu/packetcache"
"sfu/rtptime"
"github.com/pion/rtcp"
"github.com/pion/rtp"
"github.com/pion/webrtc/v3"
"sfu/conn"
"sfu/estimator"
"sfu/group"
"sfu/jitter"
"sfu/packetcache"
"sfu/rtptime"
)
type bitrate struct {
@ -71,7 +68,7 @@ type iceConnection interface {
type rtpDownTrack struct {
track *webrtc.Track
remote upTrack
remote conn.UpTrack
maxBitrate *bitrate
rate *estimator.Estimator
stats *receiverStats
@ -91,26 +88,26 @@ func (down *rtpDownTrack) Accumulate(bytes uint32) {
down.rate.Accumulate(bytes)
}
func (down *rtpDownTrack) setTimeOffset(ntp uint64, rtp uint32) {
func (down *rtpDownTrack) SetTimeOffset(ntp uint64, rtp uint32) {
atomic.StoreUint64(&down.remoteNTPTime, ntp)
atomic.StoreUint32(&down.remoteRTPTime, rtp)
}
func (down *rtpDownTrack) setCname(cname string) {
func (down *rtpDownTrack) SetCname(cname string) {
down.cname.Store(cname)
}
type rtpDownConnection struct {
id string
pc *webrtc.PeerConnection
remote upConnection
remote conn.Up
tracks []*rtpDownTrack
maxREMBBitrate *bitrate
iceCandidates []*webrtc.ICECandidateInit
}
func newDownConn(c client, id string, remote upConnection) (*rtpDownConnection, error) {
pc, err := c.Group().API().NewPeerConnection(iceConfiguration())
func newDownConn(c group.Client, id string, remote conn.Up) (*rtpDownConnection, error) {
pc, err := c.Group().API().NewPeerConnection(group.IceConfiguration())
if err != nil {
return nil, err
}
@ -193,7 +190,7 @@ type rtpUpTrack struct {
mu sync.Mutex
cname string
local []downTrack
local []conn.DownTrack
srTime uint64
srNTPTime uint64
srRTPTime uint32
@ -201,17 +198,17 @@ type rtpUpTrack struct {
type localTrackAction struct {
add bool
track downTrack
track conn.DownTrack
}
func (up *rtpUpTrack) notifyLocal(add bool, track downTrack) {
func (up *rtpUpTrack) notifyLocal(add bool, track conn.DownTrack) {
select {
case up.localCh <- localTrackAction{add, track}:
case <-up.readerDone:
}
}
func (up *rtpUpTrack) addLocal(local downTrack) error {
func (up *rtpUpTrack) AddLocal(local conn.DownTrack) error {
up.mu.Lock()
for _, t := range up.local {
if t == local {
@ -226,7 +223,7 @@ func (up *rtpUpTrack) addLocal(local downTrack) error {
return nil
}
func (up *rtpUpTrack) delLocal(local downTrack) bool {
func (up *rtpUpTrack) DelLocal(local conn.DownTrack) bool {
up.mu.Lock()
for i, l := range up.local {
if l == local {
@ -240,15 +237,15 @@ func (up *rtpUpTrack) delLocal(local downTrack) bool {
return false
}
func (up *rtpUpTrack) getLocal() []downTrack {
func (up *rtpUpTrack) getLocal() []conn.DownTrack {
up.mu.Lock()
defer up.mu.Unlock()
local := make([]downTrack, len(up.local))
local := make([]conn.DownTrack, len(up.local))
copy(local, up.local)
return local
}
func (up *rtpUpTrack) getRTP(seqno uint16, result []byte) uint16 {
func (up *rtpUpTrack) GetRTP(seqno uint16, result []byte) uint16 {
return up.cache.Get(seqno, result)
}
@ -278,7 +275,7 @@ type rtpUpConnection struct {
mu sync.Mutex
tracks []*rtpUpTrack
local []downConnection
local []conn.Down
}
func (up *rtpUpConnection) getTracks() []*rtpUpTrack {
@ -297,7 +294,7 @@ func (up *rtpUpConnection) Label() string {
return up.label
}
func (up *rtpUpConnection) addLocal(local downConnection) error {
func (up *rtpUpConnection) AddLocal(local conn.Down) error {
up.mu.Lock()
defer up.mu.Unlock()
for _, t := range up.local {
@ -309,7 +306,7 @@ func (up *rtpUpConnection) addLocal(local downConnection) error {
return nil
}
func (up *rtpUpConnection) delLocal(local downConnection) bool {
func (up *rtpUpConnection) DelLocal(local conn.Down) bool {
up.mu.Lock()
defer up.mu.Unlock()
for i, l := range up.local {
@ -321,10 +318,10 @@ func (up *rtpUpConnection) delLocal(local downConnection) bool {
return false
}
func (up *rtpUpConnection) getLocal() []downConnection {
func (up *rtpUpConnection) getLocal() []conn.Down {
up.mu.Lock()
defer up.mu.Unlock()
local := make([]downConnection, len(up.local))
local := make([]conn.Down, len(up.local))
copy(local, up.local)
return local
}
@ -370,8 +367,8 @@ func (up *rtpUpConnection) complete() bool {
return true
}
func newUpConn(c client, id string) (*rtpUpConnection, error) {
pc, err := c.Group().API().NewPeerConnection(iceConfiguration())
func newUpConn(c group.Client, id string) (*rtpUpConnection, error) {
pc, err := c.Group().API().NewPeerConnection(group.IceConfiguration())
if err != nil {
return nil, err
}
@ -396,10 +393,10 @@ func newUpConn(c client, id string) (*rtpUpConnection, error) {
return nil, err
}
conn := &rtpUpConnection{id: id, pc: pc}
up := &rtpUpConnection{id: id, pc: pc}
pc.OnTrack(func(remote *webrtc.Track, receiver *webrtc.RTPReceiver) {
conn.mu.Lock()
up.mu.Lock()
mid := getTrackMid(pc, remote)
if mid == "" {
@ -407,7 +404,7 @@ func newUpConn(c client, id string) (*rtpUpConnection, error) {
return
}
label, ok := conn.labels[mid]
label, ok := up.labels[mid]
if !ok {
log.Printf("Couldn't get track's label")
isvideo := remote.Kind() == webrtc.RTPCodecTypeVideo
@ -428,34 +425,34 @@ func newUpConn(c client, id string) (*rtpUpConnection, error) {
readerDone: make(chan struct{}),
}
conn.tracks = append(conn.tracks, track)
up.tracks = append(up.tracks, track)
go readLoop(conn, track)
go readLoop(up, track)
go rtcpUpListener(conn, track, receiver)
go rtcpUpListener(up, track, receiver)
complete := conn.complete()
var tracks []upTrack
if(complete) {
tracks = make([]upTrack, len(conn.tracks))
for i, t := range conn.tracks {
complete := up.complete()
var tracks []conn.UpTrack
if complete {
tracks = make([]conn.UpTrack, len(up.tracks))
for i, t := range up.tracks {
tracks[i] = t
}
}
// pushConn might need to take the lock
conn.mu.Unlock()
up.mu.Unlock()
if complete {
clients := c.Group().getClients(c)
clients := c.Group().GetClients(c)
for _, cc := range clients {
cc.pushConn(conn.id, conn, tracks, conn.label)
cc.PushConn(up.id, up, tracks, up.label)
}
go rtcpUpSender(conn)
go rtcpUpSender(up)
}
})
return conn, nil
return up, nil
}
func readLoop(conn *rtpUpConnection, track *rtpUpTrack) {
@ -606,7 +603,7 @@ func sendRecovery(p *rtcp.TransportLayerNack, track *rtpDownTrack) {
buf := make([]byte, packetcache.BufSize)
for _, nack := range p.Nacks {
for _, seqno := range nack.PacketList() {
l := track.remote.getRTP(seqno, buf)
l := track.remote.GetRTP(seqno, buf)
if l == 0 {
continue
}
@ -650,7 +647,7 @@ func rtcpUpListener(conn *rtpUpConnection, track *rtpUpTrack, r *webrtc.RTPRecei
track.srRTPTime = p.RTPTime
track.mu.Unlock()
for _, l := range local {
l.setTimeOffset(p.NTPTime, p.RTPTime)
l.SetTimeOffset(p.NTPTime, p.RTPTime)
}
case *rtcp.SourceDescription:
for _, c := range p.Chunks {
@ -665,7 +662,7 @@ func rtcpUpListener(conn *rtpUpConnection, track *rtpUpTrack, r *webrtc.RTPRecei
track.cname = i.Text
track.mu.Unlock()
for _, l := range local {
l.setCname(i.Text)
l.SetCname(i.Text)
}
}
}
@ -749,8 +746,8 @@ func sendUpRTCP(conn *rtpUpConnection) error {
rate = r
}
}
if rate < minBitrate {
rate = minBitrate
if rate < group.MinBitrate {
rate = group.MinBitrate
}
var ssrcs []uint32

74
rtpconn/rtpstats.go Normal file
View file

@ -0,0 +1,74 @@
package rtpconn
import (
"sort"
"sync/atomic"
"time"
"sfu/rtptime"
"sfu/stats"
)
func (c *webClient) GetStats() *stats.Client {
c.mu.Lock()
defer c.mu.Unlock()
cs := stats.Client{
Id: c.id,
}
for _, up := range c.up {
conns := stats.Conn{
Id: up.id,
}
tracks := up.getTracks()
for _, t := range tracks {
expected, lost, _, _ := t.cache.GetStats(false)
if expected == 0 {
expected = 1
}
loss := uint8(lost * 100 / expected)
jitter := time.Duration(t.jitter.Jitter()) *
(time.Second / time.Duration(t.jitter.HZ()))
rate, _ := t.rate.Estimate()
conns.Tracks = append(conns.Tracks, stats.Track{
Bitrate: uint64(rate) * 8,
Loss: loss,
Jitter: jitter,
})
}
cs.Up = append(cs.Up, conns)
}
sort.Slice(cs.Up, func(i, j int) bool {
return cs.Up[i].Id < cs.Up[j].Id
})
jiffies := rtptime.Jiffies()
for _, down := range c.down {
conns := stats.Conn{
Id: down.id,
MaxBitrate: down.GetMaxBitrate(jiffies),
}
for _, t := range down.tracks {
rate, _ := t.rate.Estimate()
rtt := rtptime.ToDuration(atomic.LoadUint64(&t.rtt),
rtptime.JiffiesPerSec)
loss, jitter := t.stats.Get(jiffies)
j := time.Duration(jitter) * time.Second /
time.Duration(t.track.Codec().ClockRate)
conns.Tracks = append(conns.Tracks, stats.Track{
Bitrate: uint64(rate) * 8,
MaxBitrate: t.maxBitrate.Get(jiffies),
Loss: uint8(uint32(loss) * 100 / 256),
Rtt: rtt,
Jitter: j,
})
}
cs.Down = append(cs.Down, conns)
}
sort.Slice(cs.Down, func(i, j int) bool {
return cs.Down[i].Id < cs.Down[j].Id
})
return &cs
}

23
rtpwriter.go → rtpconn/rtpwriter.go
View file

@ -1,4 +1,4 @@
package main
package rtpconn
import (
"errors"
@ -7,6 +7,7 @@ import (
"github.com/pion/rtp"
"sfu/conn"
"sfu/packetcache"
"sfu/rtptime"
)
@ -43,7 +44,7 @@ func sqrt(n int) int {
}
// add adds or removes a track from a writer pool
func (wp *rtpWriterPool) add(track downTrack, add bool) error {
func (wp *rtpWriterPool) add(track conn.DownTrack, add bool) error {
n := 4
if wp.count > 16 {
n = sqrt(wp.count)
@ -166,7 +167,7 @@ var ErrUnknownTrack = errors.New("unknown track")
type writerAction struct {
add bool
track downTrack
track conn.DownTrack
maxTracks int
ch chan error
}
@ -192,7 +193,7 @@ func newRtpWriter(conn *rtpUpConnection, track *rtpUpTrack) *rtpWriter {
}
// add adds or removes a track from a writer.
func (writer *rtpWriter) add(track downTrack, add bool, max int) error {
func (writer *rtpWriter) add(track conn.DownTrack, add bool, max int) error {
ch := make(chan error, 1)
select {
case writer.action <- writerAction{add, track, max, ch}:
@ -208,13 +209,13 @@ func (writer *rtpWriter) add(track downTrack, add bool, max int) error {
}
// rtpWriterLoop is the main loop of an rtpWriter.
func rtpWriterLoop(writer *rtpWriter, conn *rtpUpConnection, track *rtpUpTrack) {
func rtpWriterLoop(writer *rtpWriter, up *rtpUpConnection, track *rtpUpTrack) {
defer close(writer.done)
buf := make([]byte, packetcache.BufSize)
var packet rtp.Packet
local := make([]downTrack, 0)
local := make([]conn.DownTrack, 0)
// reset whenever a new track is inserted
firSent := false
@ -239,10 +240,10 @@ func rtpWriterLoop(writer *rtpWriter, conn *rtpUpConnection, track *rtpUpTrack)
cname := track.cname
track.mu.Unlock()
if ntp != 0 {
action.track.setTimeOffset(ntp, rtp)
action.track.SetTimeOffset(ntp, rtp)
}
if cname != "" {
action.track.setCname(cname)
action.track.SetCname(cname)
}
} else {
found := false
@ -283,7 +284,7 @@ func rtpWriterLoop(writer *rtpWriter, conn *rtpUpConnection, track *rtpUpTrack)
for _, l := range local {
err := l.WriteRTP(&packet)
if err != nil {
if err == ErrKeyframeNeeded {
if err == conn.ErrKeyframeNeeded {
kfNeeded = true
}
continue
@ -292,9 +293,9 @@ func rtpWriterLoop(writer *rtpWriter, conn *rtpUpConnection, track *rtpUpTrack)
}
if kfNeeded {
err := conn.sendFIR(track, !firSent)
err := up.sendFIR(track, !firSent)
if err == ErrUnsupportedFeedback {
conn.sendPLI(track)
up.sendPLI(track)
}
firSent = true
}

224
webclient.go → rtpconn/webclient.go
View file

@ -1,9 +1,4 @@
// 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
package rtpconn
import (
"encoding/json"
@ -13,60 +8,25 @@ import (
"sync"
"time"
"sfu/estimator"
"github.com/gorilla/websocket"
"github.com/pion/webrtc/v3"
"sfu/conn"
"sfu/disk"
"sfu/estimator"
"sfu/group"
)
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)
}
type userError string
func (err userError) Error() string {
return string(err)
}
func errorToWSCloseMessage(err error) (string, []byte) {
var code int
var text string
switch e := err.(type) {
case *websocket.CloseError:
code = websocket.CloseNormalClosure
case protocolError:
case group.ProtocolError:
code = websocket.CloseProtocolError
text = string(e)
case userError:
case group.UserError:
code = websocket.CloseNormalClosure
text = string(e)
default:
@ -82,10 +42,10 @@ func isWSNormalError(err error) bool {
}
type webClient struct {
group *group
group *group.Group
id string
credentials clientCredentials
permissions clientPermissions
credentials group.ClientCredentials
permissions group.ClientPermissions
requested map[string]uint32
done chan struct{}
writeCh chan interface{}
@ -97,7 +57,7 @@ type webClient struct {
up map[string]*rtpUpConnection
}
func (c *webClient) Group() *group {
func (c *webClient) Group() *group.Group {
return c.group
}
@ -105,15 +65,15 @@ func (c *webClient) Id() string {
return c.id
}
func (c *webClient) Credentials() clientCredentials {
func (c *webClient) Credentials() group.ClientCredentials {
return c.credentials
}
func (c *webClient) SetPermissions(perms clientPermissions) {
func (c *webClient) SetPermissions(perms group.ClientPermissions) {
c.permissions = perms
}
func (c *webClient) pushClient(id, username string, add bool) error {
func (c *webClient) PushClient(id, username string, add bool) error {
kind := "add"
if !add {
kind = "delete"
@ -179,7 +139,7 @@ type clientMessage struct {
Id string `json:"id,omitempty"`
Username string `json:"username,omitempty"`
Password string `json:"password,omitempty"`
Permissions clientPermissions `json:"permissions,omitempty"`
Permissions group.ClientPermissions `json:"permissions,omitempty"`
Group string `json:"group,omitempty"`
Value string `json:"value,omitempty"`
Offer *webrtc.SessionDescription `json:"offer,omitempty"`
@ -263,11 +223,11 @@ func delUpConn(c *webClient, id string) bool {
delete(c.up, id)
c.mu.Unlock()
go func(clients []client) {
go func(clients []group.Client) {
for _, c := range clients {
c.pushConn(conn.id, nil, nil, "")
c.PushConn(conn.id, nil, nil, "")
}
}(c.Group().getClients(c))
}(c.Group().GetClients(c))
conn.pc.Close()
return true
@ -299,7 +259,7 @@ func getConn(c *webClient, id string) iceConnection {
return nil
}
func addDownConn(c *webClient, id string, remote upConnection) (*rtpDownConnection, error) {
func addDownConn(c *webClient, id string, remote conn.Up) (*rtpDownConnection, error) {
conn, err := newDownConn(c, id, remote)
if err != nil {
return nil, err
@ -332,7 +292,7 @@ func addDownConn(c *webClient, id string, remote upConnection) (*rtpDownConnecti
}
})
err = remote.addLocal(conn)
err = remote.AddLocal(conn)
if err != nil {
conn.pc.Close()
return nil, err
@ -354,18 +314,18 @@ func delDownConn(c *webClient, id string) bool {
return false
}
conn.remote.delLocal(conn)
conn.remote.DelLocal(conn)
for _, track := range conn.tracks {
// we only insert the track after we get an answer, so
// ignore errors here.
track.remote.delLocal(track)
track.remote.DelLocal(track)
}
conn.pc.Close()
delete(c.down, id)
return true
}
func addDownTrack(c *webClient, conn *rtpDownConnection, remoteTrack upTrack, remoteConn upConnection) (*webrtc.RTPSender, error) {
func addDownTrack(c *webClient, conn *rtpDownConnection, remoteTrack conn.UpTrack, remoteConn conn.Up) (*webrtc.RTPSender, error) {
var pt uint8
var ssrc uint32
var id, label string
@ -510,7 +470,7 @@ func gotOffer(c *webClient, id string, offer webrtc.SessionDescription, renegoti
func gotAnswer(c *webClient, id string, answer webrtc.SessionDescription) error {
down := getDownConn(c, id)
if down == nil {
return protocolError("unknown id in answer")
return group.ProtocolError("unknown id in answer")
}
err := down.pc.SetRemoteDescription(answer)
if err != nil {
@ -523,7 +483,7 @@ func gotAnswer(c *webClient, id string, answer webrtc.SessionDescription) error
}
for _, t := range down.tracks {
t.remote.addLocal(t)
t.remote.AddLocal(t)
}
return nil
}
@ -553,8 +513,8 @@ func (c *webClient) setRequested(requested map[string]uint32) error {
return nil
}
func pushConns(c client) {
clients := c.Group().getClients(c)
func pushConns(c group.Client) {
clients := c.Group().GetClients(c)
for _, cc := range clients {
ccc, ok := cc.(*webClient)
if ok {
@ -567,7 +527,7 @@ func (c *webClient) isRequested(label string) bool {
return c.requested[label] != 0
}
func addDownConnTracks(c *webClient, remote upConnection, tracks []upTrack) (*rtpDownConnection, error) {
func addDownConnTracks(c *webClient, remote conn.Up, tracks []conn.UpTrack) (*rtpDownConnection, error) {
requested := false
for _, t := range tracks {
if c.isRequested(t.Label()) {
@ -600,13 +560,13 @@ func addDownConnTracks(c *webClient, remote upConnection, tracks []upTrack) (*rt
return down, nil
}
func (c *webClient) pushConn(id string, conn upConnection, tracks []upTrack, label string) error {
err := c.action(pushConnAction{id, conn, tracks})
func (c *webClient) PushConn(id string, up conn.Up, tracks []conn.UpTrack, label string) error {
err := c.action(pushConnAction{id, up, tracks})
if err != nil {
return err
}
if conn != nil && label != "" {
err := c.action(addLabelAction{conn.Id(), conn.Label()})
if up != nil && label != "" {
err := c.action(addLabelAction{up.Id(), up.Label()})
if err != nil {
return err
}
@ -614,7 +574,7 @@ func (c *webClient) pushConn(id string, conn upConnection, tracks []upTrack, lab
return nil
}
func startClient(conn *websocket.Conn) (err error) {
func StartClient(conn *websocket.Conn) (err error) {
var m clientMessage
err = conn.SetReadDeadline(time.Now().Add(15 * time.Second))
@ -646,7 +606,7 @@ func startClient(conn *websocket.Conn) (err error) {
c := &webClient{
id: m.Id,
credentials: clientCredentials{
credentials: group.ClientCredentials{
m.Username,
m.Password,
},
@ -683,32 +643,32 @@ func startClient(conn *websocket.Conn) (err error) {
}
if m.Type != "join" {
return protocolError("you must join a group first")
return group.ProtocolError("you must join a group first")
}
g, err := addClient(m.Group, c)
g, err := group.AddClient(m.Group, c)
if err != nil {
if os.IsNotExist(err) {
err = userError("group does not exist")
err = group.UserError("group does not exist")
}
return
}
if redirect := g.Redirect(); redirect != "" {
// We normally redirect at the HTTP level, but the group
// description could have been edited in the meantime.
err = userError("group is now at " + redirect)
err = group.UserError("group is now at " + redirect)
return
}
c.group = g
defer delClient(c)
defer group.DelClient(c)
return clientLoop(c, conn)
}
type pushConnAction struct {
id string
conn upConnection
tracks []upTrack
conn conn.Up
tracks []conn.UpTrack
}
type addLabelAction struct {
@ -717,7 +677,7 @@ type addLabelAction struct {
}
type pushConnsAction struct {
c client
c group.Client
}
type connectionFailedAction struct {
@ -730,9 +690,9 @@ type kickAction struct {
message string
}
func clientLoop(c *webClient, conn *websocket.Conn) error {
func clientLoop(c *webClient, ws *websocket.Conn) error {
read := make(chan interface{}, 1)
go clientReader(conn, read, c.done)
go clientReader(ws, read, c.done)
defer func() {
c.setRequested(map[string]uint32{})
@ -748,14 +708,14 @@ func clientLoop(c *webClient, conn *websocket.Conn) error {
Permissions: c.permissions,
})
h := c.group.getChatHistory()
h := c.group.GetChatHistory()
for _, m := range h {
err := c.write(clientMessage{
Type: "chat",
Id: m.id,
Username: m.user,
Value: m.value,
Kind: m.kind,
Id: m.Id,
Username: m.User,
Value: m.Value,
Kind: m.Kind,
})
if err != nil {
return err
@ -829,11 +789,11 @@ func clientLoop(c *webClient, conn *websocket.Conn) error {
case pushConnsAction:
for _, u := range c.up {
tracks := u.getTracks()
ts := make([]upTrack, len(tracks))
ts := make([]conn.UpTrack, len(tracks))
for i, t := range tracks {
ts[i] = t
}
go a.c.pushConn(u.id, u, ts, u.label)
go a.c.PushConn(u.id, u, ts, u.label)
}
case connectionFailedAction:
if down := getDownConn(c, a.id); down != nil {
@ -842,12 +802,12 @@ func clientLoop(c *webClient, conn *websocket.Conn) error {
return err
}
tracks := make(
[]upTrack, len(down.tracks),
[]conn.UpTrack, len(down.tracks),
)
for i, t := range down.tracks {
tracks[i] = t.remote
}
go c.pushConn(
go c.PushConn(
down.remote.Id(), down.remote,
tracks, down.remote.Label(),
)
@ -879,7 +839,7 @@ func clientLoop(c *webClient, conn *websocket.Conn) error {
}
}
case kickAction:
return userError(a.message)
return group.UserError(a.message)
default:
log.Printf("unexpected action %T", a)
return errors.New("unexpected action")
@ -911,7 +871,7 @@ func failConnection(c *webClient, id string, message string) error {
}
}
if message != "" {
err := c.error(userError(message))
err := c.error(group.UserError(message))
if err != nil {
return err
}
@ -919,15 +879,15 @@ func failConnection(c *webClient, id string, message string) error {
return nil
}
func setPermissions(g *group, id string, perm string) error {
client := g.getClient(id)
func setPermissions(g *group.Group, id string, perm string) error {
client := g.GetClient(id)
if client == nil {
return userError("no such user")
return group.UserError("no such user")
}
c, ok := client.(*webClient)
if !ok {
return userError("this is not a real user")
return group.UserError("this is not a real user")
}
switch perm {
@ -944,7 +904,7 @@ func setPermissions(g *group, id string, perm string) error {
case "unpresent":
c.permissions.Present = false
default:
return userError("unknown permission")
return group.UserError("unknown permission")
}
return c.action(permissionsChangedAction{})
}
@ -953,18 +913,18 @@ func (c *webClient) kick(message string) error {
return c.action(kickAction{message})
}
func kickClient(g *group, id string, message string) error {
client := g.getClient(id)
func kickClient(g *group.Group, id string, message string) error {
client := g.GetClient(id)
if client == nil {
return userError("no such user")
return group.UserError("no such user")
}
c, ok := client.(kickable)
c, ok := client.(group.Kickable)
if !ok {
return userError("this client is not kickable")
return group.UserError("this client is not kickable")
}
return c.kick(message)
return c.Kick(message)
}
func handleClientMessage(c *webClient, m clientMessage) error {
@ -980,10 +940,10 @@ func handleClientMessage(c *webClient, m clientMessage) error {
Type: "abort",
Id: m.Id,
})
return c.error(userError("not authorised"))
return c.error(group.UserError("not authorised"))
}
if m.Offer == nil {
return protocolError("null offer")
return group.ProtocolError("null offer")
}
err := gotOffer(
c, m.Id, *m.Offer, m.Kind == "renegotiate", m.Labels,
@ -994,7 +954,7 @@ func handleClientMessage(c *webClient, m clientMessage) error {
}
case "answer":
if m.Answer == nil {
return protocolError("null answer")
return group.ProtocolError("null answer")
}
err := gotAnswer(c, m.Id, *m.Answer)
if err != nil {
@ -1017,15 +977,15 @@ func handleClientMessage(c *webClient, m clientMessage) error {
}
case "ice":
if m.Candidate == nil {
return protocolError("null candidate")
return group.ProtocolError("null candidate")
}
err := gotICE(c, m.Candidate, m.Id)
if err != nil {
log.Printf("ICE: %v", err)
}
case "chat":
c.group.addToChatHistory(m.Id, m.Username, m.Kind, m.Value)
clients := c.group.getClients(nil)
c.group.AddToChatHistory(m.Id, m.Username, m.Kind, m.Value)
clients := c.group.GetClients(nil)
for _, cc := range clients {
cc, ok := cc.(*webClient)
if ok {
@ -1035,9 +995,9 @@ func handleClientMessage(c *webClient, m clientMessage) error {
case "groupaction":
switch m.Kind {
case "clearchat":
c.group.clearChatHistory()
c.group.ClearChatHistory()
m := clientMessage{Type: "clearchat"}
clients := c.group.getClients(nil)
clients := c.group.GetClients(nil)
for _, cc := range clients {
cc, ok := cc.(*webClient)
if ok {
@ -1046,21 +1006,21 @@ func handleClientMessage(c *webClient, m clientMessage) error {
}
case "lock", "unlock":
if !c.permissions.Op {
return c.error(userError("not authorised"))
return c.error(group.UserError("not authorised"))
}
c.group.SetLocked(m.Kind == "lock")
case "record":
if !c.permissions.Record {
return c.error(userError("not authorised"))
return c.error(group.UserError("not authorised"))
}
for _, cc := range c.group.getClients(c) {
_, ok := cc.(*diskClient)
for _, cc := range c.group.GetClients(c) {
_, ok := cc.(*disk.Client)
if ok {
return c.error(userError("already recording"))
return c.error(group.UserError("already recording"))
}
}
disk := NewDiskClient(c.group)
_, err := addClient(c.group.name, disk)
disk := disk.New(c.group)
_, err := group.AddClient(c.group.Name(), disk)
if err != nil {
disk.Close()
return c.error(err)
@ -1068,23 +1028,23 @@ func handleClientMessage(c *webClient, m clientMessage) error {
go pushConns(disk)
case "unrecord":
if !c.permissions.Record {
return c.error(userError("not authorised"))
return c.error(group.UserError("not authorised"))
}
for _, cc := range c.group.getClients(c) {
disk, ok := cc.(*diskClient)
for _, cc := range c.group.GetClients(c) {
disk, ok := cc.(*disk.Client)
if ok {
disk.Close()
delClient(disk)
group.DelClient(disk)
}
}
default:
return protocolError("unknown group action")
return group.ProtocolError("unknown group action")
}
case "useraction":
switch m.Kind {
case "op", "unop", "present", "unpresent":
if !c.permissions.Op {
return c.error(userError("not authorised"))
return c.error(group.UserError("not authorised"))
}
err := setPermissions(c.group, m.Id, m.Kind)
if err != nil {
@ -1092,7 +1052,7 @@ func handleClientMessage(c *webClient, m clientMessage) error {
}
case "kick":
if !c.permissions.Op {
return c.error(userError("not authorised"))
return c.error(group.UserError("not authorised"))
}
message := m.Value
if message == "" {
@ -1103,7 +1063,7 @@ func handleClientMessage(c *webClient, m clientMessage) error {
return c.error(err)
}
default:
return protocolError("unknown user action")
return group.ProtocolError("unknown user action")
}
case "pong":
// nothing
@ -1113,7 +1073,7 @@ func handleClientMessage(c *webClient, m clientMessage) error {
})
default:
log.Printf("unexpected message: %v", m.Type)
return protocolError("unexpected message")
return group.ProtocolError("unexpected message")
}
return nil
}
@ -1207,7 +1167,7 @@ func (c *webClient) close(data []byte) error {
func (c *webClient) error(err error) error {
switch e := err.(type) {
case userError:
case group.UserError:
return c.write(clientMessage{
Type: "usermessage",
Kind: "error",

14
sfu.go
View file

@ -14,14 +14,14 @@ import (
"runtime"
"runtime/pprof"
"syscall"
"sfu/disk"
"sfu/group"
)
var httpAddr string
var staticRoot string
var dataDir string
var groupsDir string
var recordingsDir string
var iceFilename string
func main() {
var cpuprofile, memprofile, mutexprofile string
@ -31,9 +31,9 @@ func main() {
"web server root `directory`")
flag.StringVar(&dataDir, "data", "./data/",
"data `directory`")
flag.StringVar(&groupsDir, "groups", "./groups/",
flag.StringVar(&group.Directory, "groups", "./groups/",
"group description `directory`")
flag.StringVar(&recordingsDir, "recordings", "./recordings/",
flag.StringVar(&disk.Directory, "recordings", "./recordings/",
"recordings `directory`")
flag.StringVar(&cpuprofile, "cpuprofile", "",
"store CPU profile in `file`")
@ -81,9 +81,9 @@ func main() {
}()
}
iceFilename = filepath.Join(dataDir, "ice-servers.json")
group.IceFilename = filepath.Join(dataDir, "ice-servers.json")
go readPublicGroups()
go group.ReadPublicGroups()
webserver()
terminate := make(chan os.Signal, 1)

130
stats.go
View file

@ -1,130 +0,0 @@
package main
import (
"sort"
"sync/atomic"
"time"
"sfu/rtptime"
)
type groupStats struct {
name string
clients []clientStats
}
type clientStats struct {
id string
up, down []connStats
}
type connStats struct {
id string
maxBitrate uint64
tracks []trackStats
}
type trackStats struct {
bitrate uint64
maxBitrate uint64
loss uint8
rtt time.Duration
jitter time.Duration
}
func getGroupStats() []groupStats {
names := getGroupNames()
gs := make([]groupStats, 0, len(names))
for _, name := range names {
g := getGroup(name)
if g == nil {
continue
}
clients := g.getClients(nil)
stats := groupStats{
name: name,
clients: make([]clientStats, 0, len(clients)),
}
for _, c := range clients {
c, ok := c.(*webClient)
if ok {
cs := getClientStats(c)
stats.clients = append(stats.clients, cs)
}
}
sort.Slice(stats.clients, func(i, j int) bool {
return stats.clients[i].id < stats.clients[j].id
})
gs = append(gs, stats)
}
sort.Slice(gs, func(i, j int) bool {
return gs[i].name < gs[j].name
})
return gs
}
func getClientStats(c *webClient) clientStats {
c.mu.Lock()
defer c.mu.Unlock()
cs := clientStats{
id: c.id,
}
for _, up := range c.up {
conns := connStats{
id: up.id,
}
tracks := up.getTracks()
for _, t := range tracks {
expected, lost, _, _ := t.cache.GetStats(false)
if expected == 0 {
expected = 1
}
loss := uint8(lost * 100 / expected)
jitter := time.Duration(t.jitter.Jitter()) *
(time.Second / time.Duration(t.jitter.HZ()))
rate, _ := t.rate.Estimate()
conns.tracks = append(conns.tracks, trackStats{
bitrate: uint64(rate) * 8,
loss: loss,
jitter: jitter,
})
}
cs.up = append(cs.up, conns)
}
sort.Slice(cs.up, func(i, j int) bool {
return cs.up[i].id < cs.up[j].id
})
jiffies := rtptime.Jiffies()
for _, down := range c.down {
conns := connStats{
id: down.id,
maxBitrate: down.GetMaxBitrate(jiffies),
}
for _, t := range down.tracks {
rate, _ := t.rate.Estimate()
rtt := rtptime.ToDuration(atomic.LoadUint64(&t.rtt),
rtptime.JiffiesPerSec)
loss, jitter := t.stats.Get(jiffies)
j := time.Duration(jitter) * time.Second /
time.Duration(t.track.Codec().ClockRate)
conns.tracks = append(conns.tracks, trackStats{
bitrate: uint64(rate) * 8,
maxBitrate: t.maxBitrate.Get(jiffies),
loss: uint8(uint32(loss) * 100 / 256),
rtt: rtt,
jitter: j,
})
}
cs.down = append(cs.down, conns)
}
sort.Slice(cs.down, func(i, j int) bool {
return cs.down[i].id < cs.down[j].id
})
return cs
}

73
stats/stats.go Normal file
View file

@ -0,0 +1,73 @@
package stats
import (
"sort"
"time"
"sfu/group"
)
type GroupStats struct {
Name string
Clients []*Client
}
type Client struct {
Id string
Up, Down []Conn
}
type Statable interface {
GetStats() *Client
}
type Conn struct {
Id string
MaxBitrate uint64
Tracks []Track
}
type Track struct {
Bitrate uint64
MaxBitrate uint64
Loss uint8
Rtt time.Duration
Jitter time.Duration
}
func GetGroups() []GroupStats {
names := group.GetNames()
gs := make([]GroupStats, 0, len(names))
for _, name := range names {
g := group.Get(name)
if g == nil {
continue
}
clients := g.GetClients(nil)
stats := GroupStats{
Name: name,
Clients: make([]*Client, 0, len(clients)),
}
for _, c := range clients {
s, ok := c.(Statable)
if ok {
cs := s.GetStats()
stats.Clients = append(stats.Clients, cs)
} else {
stats.Clients = append(stats.Clients,
&Client{Id: c.Id()},
)
}
}
sort.Slice(stats.Clients, func(i, j int) bool {
return stats.Clients[i].Id < stats.Clients[j].Id
})
gs = append(gs, stats)
}
sort.Slice(gs, func(i, j int) bool {
return gs[i].Name < gs[j].Name
})
return gs
}

69
webserver.go
View file

@ -18,6 +18,11 @@ import (
"time"
"github.com/gorilla/websocket"
"sfu/disk"
"sfu/group"
"sfu/rtpconn"
"sfu/stats"
)
var server *http.Server
@ -47,8 +52,8 @@ func webserver() {
IdleTimeout: 120 * time.Second,
}
server.RegisterOnShutdown(func() {
rangeGroups(func (g *group) bool {
go g.shutdown("server is shutting down")
group.Range(func(g *group.Group) bool {
go g.Shutdown("server is shutting down")
return true
})
})
@ -139,7 +144,7 @@ func groupHandler(w http.ResponseWriter, r *http.Request) {
return
}
g, err := addGroup(name, nil)
g, err := group.Add(name, nil)
if err != nil {
if os.IsNotExist(err) {
notFound(w)
@ -168,7 +173,7 @@ func publicHandler(w http.ResponseWriter, r *http.Request) {
return
}
g := getPublicGroups()
g := group.GetPublic()
e := json.NewEncoder(w)
e.Encode(g)
return
@ -222,7 +227,7 @@ func statsHandler(w http.ResponseWriter, r *http.Request) {
return
}
stats := getGroupStats()
ss := stats.GetGroups()
fmt.Fprintf(w, "<!DOCTYPE html>\n<html><head>\n")
fmt.Fprintf(w, "<title>Stats</title>\n")
@ -239,51 +244,51 @@ func statsHandler(w http.ResponseWriter, r *http.Request) {
return err
}
printTrack := func(w io.Writer, t trackStats) {
printTrack := func(w io.Writer, t stats.Track) {
fmt.Fprintf(w, "<tr><td></td><td></td><td></td>")
fmt.Fprintf(w, "<td>")
printBitrate(w, t.bitrate, t.maxBitrate)
printBitrate(w, t.Bitrate, t.MaxBitrate)
fmt.Fprintf(w, "</td>")
fmt.Fprintf(w, "<td>%d%%</td>",
t.loss,
t.Loss,
)
fmt.Fprintf(w, "<td>")
if t.rtt > 0 {
fmt.Fprintf(w, "%v", t.rtt)
if t.Rtt > 0 {
fmt.Fprintf(w, "%v", t.Rtt)
}
if t.jitter > 0 {
fmt.Fprintf(w, "&#177;%v", t.jitter)
if t.Jitter > 0 {
fmt.Fprintf(w, "&#177;%v", t.Jitter)
}
fmt.Fprintf(w, "</td>")
fmt.Fprintf(w, "</tr>")
}
for _, gs := range stats {
fmt.Fprintf(w, "<p>%v</p>\n", html.EscapeString(gs.name))
for _, gs := range ss {
fmt.Fprintf(w, "<p>%v</p>\n", html.EscapeString(gs.Name))
fmt.Fprintf(w, "<table>")
for _, cs := range gs.clients {
fmt.Fprintf(w, "<tr><td>%v</td></tr>\n", cs.id)
for _, up := range cs.up {
for _, cs := range gs.Clients {
fmt.Fprintf(w, "<tr><td>%v</td></tr>\n", cs.Id)
for _, up := range cs.Up {
fmt.Fprintf(w, "<tr><td></td><td>Up</td><td>%v</td>",
up.id)
if up.maxBitrate > 0 {
up.Id)
if up.MaxBitrate > 0 {
fmt.Fprintf(w, "<td>%v</td>",
up.maxBitrate)
up.MaxBitrate)
}
fmt.Fprintf(w, "</tr>\n")
for _, t := range up.tracks {
for _, t := range up.Tracks {
printTrack(w, t)
}
}
for _, down := range cs.down {
for _, down := range cs.Down {
fmt.Fprintf(w, "<tr><td></td><td>Down</td><td> %v</td>",
down.id)
if down.maxBitrate > 0 {
down.Id)
if down.MaxBitrate > 0 {
fmt.Fprintf(w, "<td>%v</td>",
down.maxBitrate)
down.MaxBitrate)
}
fmt.Fprintf(w, "</tr>\n")
for _, t := range down.tracks {
for _, t := range down.Tracks {
printTrack(w, t)
}
}
@ -302,7 +307,7 @@ func wsHandler(w http.ResponseWriter, r *http.Request) {
return
}
go func() {
err := startClient(conn)
err := rtpconn.StartClient(conn)
if err != nil {
log.Printf("client: %v", err)
}
@ -322,7 +327,7 @@ func recordingsHandler(w http.ResponseWriter, r *http.Request) {
return
}
f, err := os.Open(filepath.Join(recordingsDir, pth))
f, err := os.Open(filepath.Join(disk.Directory, pth))
if err != nil {
if os.IsNotExist(err) {
notFound(w)
@ -389,7 +394,7 @@ func handleGroupAction(w http.ResponseWriter, r *http.Request, group string) {
return
}
err := os.Remove(
filepath.Join(recordingsDir, group+"/"+filename),
filepath.Join(disk.Directory, group+"/"+filename),
)
if err != nil {
if os.IsPermission(err) {
@ -409,8 +414,8 @@ func handleGroupAction(w http.ResponseWriter, r *http.Request, group string) {
}
}
func checkGroupPermissions(w http.ResponseWriter, r *http.Request, group string) bool {
desc, err := getDescription(group)
func checkGroupPermissions(w http.ResponseWriter, r *http.Request, groupname string) bool {
desc, err := group.GetDescription(groupname)
if err != nil {
return false
}
@ -420,7 +425,7 @@ func checkGroupPermissions(w http.ResponseWriter, r *http.Request, group string)
return false
}
p, err := getPermission(desc, clientCredentials{user, pass})
p, err := desc.GetPermission(group.ClientCredentials{user, pass})
if err != nil || !p.Record {
return false
}