├── .gitignore ├── main.go ├── rtp ├── attributes.go ├── rtcp.go ├── unwrapper.go ├── format.go ├── bandwidth_estimator.go └── interceptor.go ├── tcp ├── tcp_setcc_linux.go ├── tcp_setcc.go ├── tcp.go ├── receiver.go └── sender.go ├── scream ├── receiver_option.go ├── scream.go ├── sender_option.go ├── rtp_queue.go ├── receiver_interceptor.go └── sender_interceptor.go ├── cc └── algorithm.go ├── quic ├── tls.go ├── quic.go ├── local_rfc8888.go ├── qlog_tracer.go ├── receiver.go └── sender.go ├── LICENSE ├── README.md ├── go.mod ├── media ├── config.go ├── syncodec.go └── gstreamer.go ├── logging └── logging.go ├── udp ├── receiver.go ├── sender.go └── udp.go ├── cmd ├── root.go ├── receive.go └── send.go └── go.sum /.gitignore: -------------------------------------------------------------------------------- 1 | rtp-over-quic 2 | .idea/ 3 | -------------------------------------------------------------------------------- /main.go: -------------------------------------------------------------------------------- 1 | package main 2 | 3 | import ( 4 | "log" 5 | 6 | "github.com/mengelbart/rtp-over-quic/cmd" 7 | ) 8 | 9 | func main() { 10 | log.SetFlags(log.Ltime | log.Lmicroseconds | log.Lshortfile) 11 | cmd.Execute() 12 | } 13 | -------------------------------------------------------------------------------- /rtp/attributes.go: -------------------------------------------------------------------------------- 1 | package rtp 2 | 3 | type AttributeKey int 4 | 5 | const ( 6 | RELIABILITY AttributeKey = iota 7 | ) 8 | 9 | type Reliability bool 10 | 11 | const ( 12 | REQUIRED Reliability = true 13 | NOT_REQUIRED Reliability = false 14 | ) 15 | -------------------------------------------------------------------------------- /tcp/tcp_setcc_linux.go: -------------------------------------------------------------------------------- 1 | //go:build linux 2 | // +build linux 3 | 4 | package tcp 5 | 6 | import "syscall" 7 | 8 | func setCC(fd int, algo string) error { 9 | return syscall.SetsockoptString(fd, syscall.IPPROTO_TCP, syscall.TCP_CONGESTION, algo) 10 | } 11 | -------------------------------------------------------------------------------- /tcp/tcp_setcc.go: -------------------------------------------------------------------------------- 1 | //go:build !linux 2 | // +build !linux 3 | 4 | package tcp 5 | 6 | import "log" 7 | 8 | func setCC(_ int, _ string) error { 9 | // noop 10 | log.Printf("WARNING: setting CC algorithm for TCP is not supported on non-Linux platforms. Using default.") 11 | return nil 12 | } 13 | -------------------------------------------------------------------------------- /scream/receiver_option.go: -------------------------------------------------------------------------------- 1 | package scream 2 | 3 | import "time" 4 | 5 | // ReceiverOption can be used to configure SenderInterceptor. 6 | type ReceiverOption func(r *ReceiverInterceptor) error 7 | 8 | // ReceiverInterval sets the feedback send interval for the interceptor 9 | func ReceiverInterval(interval time.Duration) ReceiverOption { 10 | return func(s *ReceiverInterceptor) error { 11 | s.interval = interval 12 | return nil 13 | } 14 | } 15 | -------------------------------------------------------------------------------- /rtp/rtcp.go: -------------------------------------------------------------------------------- 1 | package rtp 2 | 3 | import ( 4 | "context" 5 | "log" 6 | 7 | "github.com/pion/interceptor" 8 | ) 9 | 10 | type RTCPFeedback struct { 11 | Buffer []byte 12 | Attributes interceptor.Attributes 13 | } 14 | 15 | func ReadRTCP(ctx context.Context, rtcpReader interceptor.RTCPReader, rtcpChan <-chan RTCPFeedback) { 16 | for { 17 | select { 18 | case report := <-rtcpChan: 19 | _, _, err := rtcpReader.Read(report.Buffer, report.Attributes) 20 | if err != nil { 21 | log.Printf("RTCP reader returned error: %v", err) 22 | } 23 | case <-ctx.Done(): 24 | return 25 | } 26 | } 27 | } 28 | -------------------------------------------------------------------------------- /scream/scream.go: -------------------------------------------------------------------------------- 1 | // Package scream provides interceptors to implement SCReAM congestion control via cgo 2 | package scream 3 | 4 | import ( 5 | "time" 6 | 7 | "github.com/pion/interceptor" 8 | ) 9 | 10 | func streamSupportSCReAM(info *interceptor.StreamInfo) bool { 11 | for _, fb := range info.RTCPFeedback { 12 | if fb.Type == "ack" && fb.Parameter == "ccfb" { 13 | return true 14 | } 15 | } 16 | 17 | return false 18 | } 19 | 20 | func ntpTime32(t time.Time) uint32 { 21 | // seconds since 1st January 1900 22 | s := (float64(t.UnixNano()) / 1000000000.0) + 2208988800 23 | 24 | integerPart := uint32(s) 25 | fractionalPart := uint32((s - float64(integerPart)) * 0xFFFFFFFF) 26 | 27 | // higher 32 bits are the integer part, lower 32 bits are the fractional part 28 | return uint32(((uint64(integerPart)<<32 | uint64(fractionalPart)) >> 16) & 0xFFFFFFFF) 29 | } 30 | -------------------------------------------------------------------------------- /cc/algorithm.go: -------------------------------------------------------------------------------- 1 | package cc 2 | 3 | import "log" 4 | 5 | type Algorithm int 6 | 7 | const ( 8 | Reno Algorithm = iota 9 | Cubic 10 | BBR 11 | SCReAM 12 | GCC 13 | NONE 14 | ) 15 | 16 | func AlgorithmFromString(a string) Algorithm { 17 | switch a { 18 | case "reno": 19 | return Reno 20 | case "cubic": 21 | return Cubic 22 | case "bbr": 23 | return BBR 24 | case "scream": 25 | return SCReAM 26 | case "gcc": 27 | return GCC 28 | case "none": 29 | return NONE 30 | default: 31 | log.Printf("warning, unknown algorithm: %v, using default ('reno')", a) 32 | return Reno 33 | } 34 | } 35 | 36 | func (a Algorithm) String() string { 37 | switch a { 38 | case Reno: 39 | return "reno" 40 | case Cubic: 41 | return "cubic" 42 | case BBR: 43 | return "bbr" 44 | case SCReAM: 45 | return "scream" 46 | case GCC: 47 | return "gcc" 48 | case NONE: 49 | return "none" 50 | default: 51 | log.Printf("warning, undefined algorithm: %v", int(a)) 52 | return "none" 53 | } 54 | } 55 | -------------------------------------------------------------------------------- /rtp/unwrapper.go: -------------------------------------------------------------------------------- 1 | package rtp 2 | 3 | const ( 4 | maxSequenceNumberPlusOne = int64(65536) 5 | breakpoint = 32768 // half of max uint16 6 | ) 7 | 8 | type unwrapper struct { 9 | init bool 10 | lastUnwrapped int64 11 | } 12 | 13 | func isNewer(value, previous uint16) bool { 14 | if value-previous == breakpoint { 15 | return value > previous 16 | } 17 | return value != previous && (value-previous) < breakpoint 18 | } 19 | 20 | func (u *unwrapper) unwrap(i uint16) int64 { 21 | if !u.init { 22 | u.init = true 23 | u.lastUnwrapped = int64(i) 24 | return u.lastUnwrapped 25 | } 26 | 27 | lastWrapped := uint16(u.lastUnwrapped) 28 | delta := int64(i - lastWrapped) 29 | if isNewer(i, lastWrapped) { 30 | if delta < 0 { 31 | delta += maxSequenceNumberPlusOne 32 | } 33 | } else if delta > 0 && u.lastUnwrapped+delta-maxSequenceNumberPlusOne >= 0 { 34 | delta -= maxSequenceNumberPlusOne 35 | } 36 | 37 | u.lastUnwrapped += int64(delta) 38 | return u.lastUnwrapped 39 | } 40 | -------------------------------------------------------------------------------- /quic/tls.go: -------------------------------------------------------------------------------- 1 | package quic 2 | 3 | import ( 4 | "crypto/rand" 5 | "crypto/rsa" 6 | "crypto/tls" 7 | "crypto/x509" 8 | "encoding/pem" 9 | "io" 10 | "math/big" 11 | ) 12 | 13 | // Setup a bare-bones TLS config for the server 14 | func generateTLSConfig(keyLogWriter io.Writer) *tls.Config { 15 | key, err := rsa.GenerateKey(rand.Reader, 1024) 16 | if err != nil { 17 | panic(err) 18 | } 19 | template := x509.Certificate{SerialNumber: big.NewInt(1)} 20 | certDER, err := x509.CreateCertificate(rand.Reader, &template, &template, &key.PublicKey, key) 21 | if err != nil { 22 | panic(err) 23 | } 24 | keyPEM := pem.EncodeToMemory(&pem.Block{Type: "RSA PRIVATE KEY", Bytes: x509.MarshalPKCS1PrivateKey(key)}) 25 | certPEM := pem.EncodeToMemory(&pem.Block{Type: "CERTIFICATE", Bytes: certDER}) 26 | 27 | tlsCert, err := tls.X509KeyPair(certPEM, keyPEM) 28 | if err != nil { 29 | panic(err) 30 | } 31 | return &tls.Config{ 32 | KeyLogWriter: keyLogWriter, 33 | Certificates: []tls.Certificate{tlsCert}, 34 | NextProtos: []string{rtpOverQUICALPN}, 35 | } 36 | } 37 | -------------------------------------------------------------------------------- /scream/sender_option.go: -------------------------------------------------------------------------------- 1 | package scream 2 | 3 | import "github.com/mengelbart/scream-go" 4 | 5 | // SenderOption can be used to configure SenderInterceptor. 6 | type SenderOption func(r *SenderInterceptor) error 7 | 8 | // SenderQueue sets the factory function to create new RTP Queues for new streams. 9 | func SenderQueue(queueFactory func() RTPQueue) SenderOption { 10 | return func(s *SenderInterceptor) error { 11 | s.newRTPQueue = queueFactory 12 | return nil 13 | } 14 | } 15 | 16 | func Tx(tx *scream.Tx) SenderOption { 17 | return func(s *SenderInterceptor) error { 18 | s.tx = tx 19 | return nil 20 | } 21 | } 22 | 23 | func MinBitrate(rate float64) SenderOption { 24 | return func(s *SenderInterceptor) error { 25 | s.minBitrate = rate 26 | return nil 27 | } 28 | } 29 | 30 | func InitialBitrate(rate float64) SenderOption { 31 | return func(s *SenderInterceptor) error { 32 | s.initialBitrate = rate 33 | return nil 34 | } 35 | } 36 | 37 | func MaxBitrate(rate float64) SenderOption { 38 | return func(s *SenderInterceptor) error { 39 | s.maxBitrate = rate 40 | return nil 41 | } 42 | } 43 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | MIT License 2 | 3 | Copyright (c) 2022 Mathis Engelbart 4 | 5 | Permission is hereby granted, free of charge, to any person obtaining a copy 6 | of this software and associated documentation files (the "Software"), to deal 7 | in the Software without restriction, including without limitation the rights 8 | to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 9 | copies of the Software, and to permit persons to whom the Software is 10 | furnished to do so, subject to the following conditions: 11 | 12 | The above copyright notice and this permission notice shall be included in all 13 | copies or substantial portions of the Software. 14 | 15 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 18 | AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 19 | LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 20 | OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 21 | SOFTWARE. 22 | -------------------------------------------------------------------------------- /quic/quic.go: -------------------------------------------------------------------------------- 1 | package quic 2 | 3 | import ( 4 | "time" 5 | 6 | "github.com/lucas-clemente/quic-go" 7 | "github.com/mengelbart/rtp-over-quic/cc" 8 | "github.com/mengelbart/rtp-over-quic/logging" 9 | ) 10 | 11 | type TransportMode int 12 | 13 | func TransportModeFromString(s string) TransportMode { 14 | switch s { 15 | case "quic-dgram": 16 | return DGRAM 17 | case "quic-stream": 18 | return STREAM 19 | default: 20 | return ANY 21 | } 22 | } 23 | 24 | const ( 25 | ANY TransportMode = iota 26 | DGRAM 27 | STREAM 28 | ) 29 | 30 | func listen( 31 | addr string, 32 | ccAlgo cc.Algorithm, 33 | qlogDirectoryName string, 34 | sslKeyLogFileName string, 35 | ) (quic.Listener, error) { 36 | qlogWriter, err := logging.GetQLOGTracer(qlogDirectoryName) 37 | if err != nil { 38 | return nil, err 39 | } 40 | keyLogger, err := logging.GetKeyLogger(sslKeyLogFileName) 41 | if err != nil { 42 | return nil, err 43 | } 44 | quicConf := &quic.Config{ 45 | EnableDatagrams: true, 46 | HandshakeIdleTimeout: 15 * time.Second, 47 | Tracer: qlogWriter, 48 | DisableCC: ccAlgo != cc.Reno, 49 | MaxIncomingStreams: 1 << 60, 50 | MaxIncomingUniStreams: 1 << 60, 51 | } 52 | tlsConf := generateTLSConfig(keyLogger) 53 | return quic.ListenAddr(addr, tlsConf, quicConf) 54 | } 55 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # RTP over QUIC 2 | 3 | **_This project is unmaintained. Please see 4 | [github.com/mengelbart/roq](https://github.com/mengelbart/roq) for a maintained 5 | library instead._** 6 | 7 | `rtp-over-quic` is a partial implementation of [RTP over QUIC](https://datatracker.ietf.org/doc/html/draft-engelbart-rtp-over-quic). 8 | 9 | ## Features 10 | 11 | The application can act as RTP sender or receiver and supports different transport options: 12 | 13 | * Transport protocol: 14 | * UDP 15 | * QUIC Datagrams 16 | * (TCP) 17 | * Real-time congestion control: SCReAM, (GCC), None 18 | * RTCP: 19 | * RFC 8888, optionally generated by the sender using QUIC statistics (RFC 8888 is required for SCReAM) 20 | * TWCC (required for GCC) 21 | * Codec: `h264`, `vp8`, `vp9` 22 | * QUIC congestion control: NewReno, None 23 | * Optionally send non-RTP data on a QUIC stream 24 | * Various logging options for RTP/RTCP, QLOG, congestion control statistics 25 | 26 | The implementation uses [Gstreamer](https://gstreamer.freedesktop.org/) for video coding and RTP (de-)packetization and CGO to integrate [SCReAM](https://github.com/EricssonResearch/scream/). 27 | 28 | ## Build and Run 29 | 30 | After installing the dependencies (Gstreamer, C/C++ Compiler) and building with `go build`, you can start a receiver with `./rtp-over-quic receive` and a sender with `./rtp-over-quic send`. 31 | Use the `-h` flag to see the available options for receiver and sender. 32 | -------------------------------------------------------------------------------- /rtp/format.go: -------------------------------------------------------------------------------- 1 | package rtp 2 | 3 | import ( 4 | "fmt" 5 | "time" 6 | 7 | "github.com/pion/interceptor" 8 | "github.com/pion/rtcp" 9 | "github.com/pion/rtp" 10 | ) 11 | 12 | type rtpFormatter struct { 13 | seqnr unwrapper 14 | } 15 | 16 | func (f *rtpFormatter) rtpFormat(pkt *rtp.Packet, _ interceptor.Attributes) string { 17 | var twcc rtp.TransportCCExtension 18 | unwrappedSeqNr := f.seqnr.unwrap(pkt.SequenceNumber) 19 | var twccNr uint16 20 | if len(pkt.GetExtensionIDs()) > 0 { 21 | ext := pkt.GetExtension(pkt.GetExtensionIDs()[0]) 22 | if err := twcc.Unmarshal(ext); err != nil { 23 | panic(err) 24 | } 25 | twccNr = twcc.TransportSequence 26 | } 27 | return fmt.Sprintf("%v, %v, %v, %v, %v, %v, %v, %v, %v\n", 28 | time.Now().UnixMilli(), 29 | pkt.PayloadType, 30 | pkt.SSRC, 31 | pkt.SequenceNumber, 32 | pkt.Timestamp, 33 | pkt.Marker, 34 | pkt.MarshalSize(), 35 | twccNr, 36 | unwrappedSeqNr, 37 | ) 38 | } 39 | 40 | func rtcpFormat(pkts []rtcp.Packet, _ interceptor.Attributes) string { 41 | now := time.Now().UnixMilli() 42 | types := []string{} 43 | size := 0 44 | for _, pkt := range pkts { 45 | switch feedback := pkt.(type) { 46 | case *rtcp.CCFeedbackReport: 47 | size += int(feedback.Len()) 48 | types = append(types, "ccfb") 49 | //return fmt.Sprintf("len=%v; %v\n", feedback.Len(), feedback) 50 | case *rtcp.TransportLayerCC: 51 | size += int(feedback.Len()) 52 | types = append(types, "twcc") 53 | //return fmt.Sprintf("len=%v; %v\n", feedback.Len(), feedback) 54 | case *rtcp.RawPacket: 55 | size += int(len(*feedback)) 56 | types = append(types, "raw") 57 | //return fmt.Sprintf("RAW: %v\n%x\n", feedback.Header(), feedback) 58 | } 59 | } 60 | return fmt.Sprintf("%v, %v, %v\n", now, size, types) 61 | } 62 | -------------------------------------------------------------------------------- /tcp/tcp.go: -------------------------------------------------------------------------------- 1 | package tcp 2 | 3 | import ( 4 | "fmt" 5 | "net" 6 | "syscall" 7 | 8 | "github.com/mengelbart/rtp-over-quic/cc" 9 | ) 10 | 11 | func connectTCP(addr string, cc cc.Algorithm) (*net.TCPConn, error) { 12 | dialer := &net.Dialer{ 13 | Control: func(_, _ string, c syscall.RawConn) error { 14 | var operr error 15 | if err := c.Control(func(fd uintptr) { 16 | operr = setCC(int(fd), cc.String()) 17 | }); err != nil { 18 | return err 19 | } 20 | if operr != nil { 21 | return fmt.Errorf("failed to set TCP congestion control algorithm to '%v': %w", cc.String(), operr) 22 | } 23 | return nil 24 | }, 25 | } 26 | conn, err := dialer.Dial("tcp", addr) 27 | if err != nil { 28 | return nil, err 29 | } 30 | // TODO: Use something like this for tcp cwnd logging: 31 | //go func() { 32 | // t := time.NewTicker(200 * time.Millisecond) 33 | // for range t.C { 34 | // conn, ok := conn.(interface { 35 | // SyscallConn() (syscall.RawConn, error) 36 | // }) 37 | // if !ok { 38 | // panic(errors.New("doesn't have a SyscallConn")) 39 | // } 40 | // rawConn, err := conn.SyscallConn() 41 | // if err != nil { 42 | // panic(fmt.Errorf("couldn't get syscall.RawConn: %w", err)) 43 | // } 44 | // rawConn.Control(func(fd uintptr) { 45 | // info, serr := unix.GetsockoptTCPInfo(int(fd), unix.SOL_TCP, unix.TCP_INFO) 46 | // if serr != nil { 47 | // panic(serr) 48 | // } 49 | // fmt.Printf("%v\n", info.Snd_cwnd) 50 | // }) 51 | // } 52 | //}() 53 | return conn.(*net.TCPConn), nil 54 | } 55 | 56 | func listenTCP(addr string) (*net.TCPListener, error) { 57 | // TODO: Setup CC alogithm? 58 | tcpAddr, err := net.ResolveTCPAddr("tcp", addr) 59 | if err != nil { 60 | return nil, err 61 | } 62 | return net.ListenTCP("tcp", tcpAddr) 63 | } 64 | -------------------------------------------------------------------------------- /go.mod: -------------------------------------------------------------------------------- 1 | module github.com/mengelbart/rtp-over-quic 2 | 3 | go 1.18 4 | 5 | require ( 6 | github.com/lucas-clemente/quic-go v0.28.1 7 | github.com/mengelbart/gst-go v0.0.0-20220824124234-80d4e9fbbda6 8 | github.com/mengelbart/scream-go v0.4.1-0.20220916152424-a421761640a2 9 | github.com/mengelbart/syncodec v0.0.0-20220105132658-94ec57e63a65 10 | github.com/pion/interceptor v0.1.12 11 | github.com/pion/logging v0.2.2 12 | github.com/pion/rtcp v1.2.10 13 | github.com/pion/rtp v1.7.13 14 | github.com/pion/webrtc/v3 v3.1.43 15 | github.com/spf13/cobra v1.3.0 16 | golang.org/x/sys v0.0.0-20220622161953-175b2fd9d664 17 | ) 18 | 19 | require ( 20 | github.com/francoispqt/gojay v1.2.13 // indirect 21 | github.com/fsnotify/fsnotify v1.5.1 // indirect 22 | github.com/go-task/slim-sprig v0.0.0-20210107165309-348f09dbbbc0 // indirect 23 | github.com/golang/mock v1.6.0 // indirect 24 | github.com/inconshreveable/mousetrap v1.0.0 // indirect 25 | github.com/marten-seemann/qtls-go1-18 v0.1.2 // indirect 26 | github.com/marten-seemann/qtls-go1-19 v0.1.0 // indirect 27 | github.com/nxadm/tail v1.4.8 // indirect 28 | github.com/onsi/ginkgo v1.16.5 // indirect 29 | github.com/pion/randutil v0.1.0 // indirect 30 | github.com/spf13/pflag v1.0.5 // indirect 31 | golang.org/x/crypto v0.0.0-20220516162934-403b01795ae8 // indirect 32 | golang.org/x/exp v0.0.0-20220722155223-a9213eeb770e // indirect 33 | golang.org/x/mod v0.6.0-dev.0.20220106191415-9b9b3d81d5e3 // indirect 34 | golang.org/x/net v0.0.0-20220630215102-69896b714898 // indirect 35 | golang.org/x/tools v0.1.10 // indirect 36 | golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1 // indirect 37 | gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7 // indirect 38 | ) 39 | 40 | replace github.com/lucas-clemente/quic-go v0.28.1 => github.com/mengelbart/quic-go v0.7.1-0.20220916195640-e314b18dd0a4 41 | 42 | replace github.com/pion/rtp v1.7.13 => github.com/mengelbart/rtp v1.7.14-0.20220728010821-271390af6fab 43 | -------------------------------------------------------------------------------- /media/config.go: -------------------------------------------------------------------------------- 1 | package media 2 | 3 | import ( 4 | "fmt" 5 | 6 | "github.com/pion/rtp" 7 | "github.com/pion/rtp/codecs" 8 | ) 9 | 10 | type ConfigOption func(*Config) error 11 | 12 | type Config struct { 13 | targetBitrate uint 14 | ssrc uint32 15 | mtu uint 16 | payloadType uint8 17 | clockRate uint32 18 | codec string 19 | } 20 | 21 | func newConfig(opts ...ConfigOption) (*Config, error) { 22 | c := &Config{ 23 | targetBitrate: 100_000, 24 | ssrc: 0, 25 | mtu: 1200, 26 | payloadType: 96, 27 | clockRate: 90000, 28 | codec: "h264", 29 | } 30 | for _, opt := range opts { 31 | if err := opt(c); err != nil { 32 | return nil, err 33 | } 34 | } 35 | return c, nil 36 | } 37 | 38 | func InitialTargetBitrate(r uint) ConfigOption { 39 | return func(s *Config) error { 40 | s.targetBitrate = r 41 | return nil 42 | } 43 | } 44 | 45 | func SSRC(ssrc uint32) ConfigOption { 46 | return func(c *Config) error { 47 | c.ssrc = ssrc 48 | return nil 49 | } 50 | } 51 | 52 | func MTU(mtu uint) ConfigOption { 53 | return func(c *Config) error { 54 | c.mtu = mtu 55 | return nil 56 | } 57 | } 58 | 59 | func PayloadType(pt uint8) ConfigOption { 60 | return func(c *Config) error { 61 | c.payloadType = pt 62 | return nil 63 | } 64 | } 65 | 66 | func ClockRate(r uint32) ConfigOption { 67 | return func(c *Config) error { 68 | c.clockRate = r 69 | return nil 70 | } 71 | } 72 | 73 | func Codec(codec string) ConfigOption { 74 | return func(c *Config) error { 75 | c.codec = codec 76 | return nil 77 | } 78 | } 79 | 80 | func payloaderForCodec(codec string) (rtp.Payloader, error) { 81 | switch codec { 82 | case "h264": 83 | return &codecs.H264Payloader{}, nil 84 | case "vp8": 85 | return &codecs.VP8Payloader{ 86 | EnablePictureID: true, 87 | }, nil 88 | case "vp9": 89 | return &codecs.VP9Payloader{}, nil 90 | case "av1": 91 | return &codecs.AV1Payloader{}, nil 92 | default: 93 | return nil, fmt.Errorf("the requested codec %v does not have a payloader", codec) 94 | } 95 | } 96 | -------------------------------------------------------------------------------- /media/syncodec.go: -------------------------------------------------------------------------------- 1 | package media 2 | 3 | import ( 4 | "log" 5 | 6 | "github.com/mengelbart/syncodec" 7 | "github.com/pion/interceptor" 8 | "github.com/pion/rtp" 9 | ) 10 | 11 | const ( 12 | H264 = "h264" 13 | VP8 = "vp8" 14 | VP9 = "vp9" 15 | ) 16 | 17 | type SyncodecSource struct { 18 | Config 19 | 20 | targetBitrate uint 21 | codec syncodec.Codec 22 | rtpWriter interceptor.RTPWriter 23 | packetizer rtp.Packetizer 24 | } 25 | 26 | func NewSyncodecSource(rtpWriter interceptor.RTPWriter, opts ...ConfigOption) (*SyncodecSource, error) { 27 | c, err := newConfig(opts...) 28 | if err != nil { 29 | return nil, err 30 | } 31 | payloader, err := payloaderForCodec(c.codec) 32 | if err != nil { 33 | return nil, err 34 | } 35 | packetizer := rtp.NewPacketizer( 36 | c.payloadType, 37 | c.ssrc, 38 | payloader, 39 | rtp.NewRandomSequencer(), 40 | c.clockRate, 41 | ) 42 | s := &SyncodecSource{ 43 | Config: *c, 44 | targetBitrate: 0, 45 | codec: nil, 46 | rtpWriter: rtpWriter, 47 | packetizer: packetizer, 48 | } 49 | codec, err := syncodec.NewStatisticalEncoder(s, syncodec.WithInitialTargetBitrate(int(s.targetBitrate))) 50 | if err != nil { 51 | return nil, err 52 | } 53 | s.codec = codec 54 | return s, nil 55 | } 56 | 57 | func (e *SyncodecSource) WriteFrame(frame syncodec.Frame) { 58 | samples := uint32(frame.Duration.Seconds() * float64(e.clockRate)) 59 | pkts := e.packetizer.Packetize(e.mtu, frame.Content, samples) 60 | for _, pkt := range pkts { 61 | if _, err := e.rtpWriter.Write(&pkt.Header, pkt.Payload, nil); err != nil { 62 | log.Printf("WARNING: failed to write RTP packet: %v", err) 63 | } 64 | } 65 | } 66 | 67 | func (s *SyncodecSource) Play() error { 68 | go s.codec.Start() 69 | return nil 70 | } 71 | 72 | func (s *SyncodecSource) Stop() error { 73 | return s.codec.Close() 74 | } 75 | 76 | func (s *SyncodecSource) SetTargetBitsPerSecond(r uint) { 77 | s.codec.SetTargetBitrate(int(r)) 78 | } 79 | 80 | type SyncodecSink struct{} 81 | 82 | func NewSyncodecSink() (*SyncodecSink, error) { 83 | return &SyncodecSink{}, nil 84 | } 85 | 86 | func (s *SyncodecSink) Write(b []byte) (int, error) { 87 | return len(b), nil 88 | } 89 | 90 | func (s *SyncodecSink) Stop() error { 91 | return nil 92 | } 93 | 94 | func (s *SyncodecSink) Play() error { 95 | return nil 96 | } 97 | -------------------------------------------------------------------------------- /logging/logging.go: -------------------------------------------------------------------------------- 1 | package logging 2 | 3 | import ( 4 | "bufio" 5 | "fmt" 6 | "io" 7 | "log" 8 | "os" 9 | "strings" 10 | 11 | "github.com/lucas-clemente/quic-go/logging" 12 | "github.com/lucas-clemente/quic-go/qlog" 13 | ) 14 | 15 | func GetLogFile(file string) (io.WriteCloser, error) { 16 | if len(file) == 0 { 17 | return nopCloser{io.Discard}, nil 18 | } 19 | if file == "stdout" { 20 | return nopCloser{os.Stdout}, nil 21 | } 22 | fd, err := os.Create(file) 23 | if err != nil { 24 | return nil, err 25 | } 26 | bufwriter := bufio.NewWriterSize(fd, 4096) 27 | 28 | return &fileCloser{ 29 | f: fd, 30 | buf: bufwriter, 31 | }, nil 32 | } 33 | 34 | func GetQLOGTracer(path string) (logging.Tracer, error) { 35 | if len(path) == 0 { 36 | return nil, nil 37 | } 38 | if path == "stdout" { 39 | return qlog.NewTracer(func(p logging.Perspective, connectionID []byte) io.WriteCloser { 40 | return nopCloser{os.Stdout} 41 | }), nil 42 | } 43 | _, err := os.Stat(path) 44 | if err != nil { 45 | if os.IsNotExist(err) { 46 | if err = os.MkdirAll(path, 0o666); err != nil { 47 | return nil, fmt.Errorf("failed to create qlog dir %s: %v", path, err) 48 | } 49 | } else { 50 | return nil, err 51 | } 52 | } 53 | return qlog.NewTracer(func(p logging.Perspective, connectionID []byte) io.WriteCloser { 54 | file := fmt.Sprintf("%s/%x_%v.qlog", strings.TrimRight(path, "/"), connectionID, p) 55 | w, err := os.Create(file) 56 | if err != nil { 57 | log.Printf("failed to create qlog file %s: %v", path, err) 58 | return nil 59 | } 60 | log.Printf("created qlog file: %s\n", path) 61 | return w 62 | }), nil 63 | } 64 | 65 | func GetKeyLogger(keyLogFile string) (io.Writer, error) { 66 | if len(keyLogFile) == 0 { 67 | return nil, nil 68 | } 69 | keyLogger, err := os.OpenFile(keyLogFile, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0600) 70 | if err != nil { 71 | return nil, err 72 | } 73 | return keyLogger, nil 74 | } 75 | 76 | type fileCloser struct { 77 | f *os.File 78 | buf *bufio.Writer 79 | } 80 | 81 | func (f *fileCloser) Write(buf []byte) (int, error) { 82 | return f.f.Write(buf) 83 | } 84 | 85 | func (f *fileCloser) Close() error { 86 | if err := f.buf.Flush(); err != nil { 87 | log.Printf("failed to flush: %v\n", err) 88 | } 89 | return f.f.Close() 90 | } 91 | 92 | type nopCloser struct { 93 | io.Writer 94 | } 95 | 96 | func (nopCloser) Close() error { return nil } 97 | -------------------------------------------------------------------------------- /quic/local_rfc8888.go: -------------------------------------------------------------------------------- 1 | package quic 2 | 3 | import ( 4 | "context" 5 | "time" 6 | 7 | "github.com/mengelbart/rtp-over-quic/rtp" 8 | screamcgo "github.com/mengelbart/scream-go" 9 | ) 10 | 11 | type RTTStats struct { 12 | MinRTT time.Duration 13 | SmoothedRTT time.Duration 14 | RTTVar time.Duration 15 | LatestRTT time.Duration 16 | } 17 | 18 | type Metricer interface { 19 | Metrics() RTTStats 20 | } 21 | 22 | type ackedPkt struct { 23 | sentTS time.Time 24 | ssrc uint32 25 | size int 26 | seqNr uint16 27 | } 28 | 29 | func getNTPT0() float64 { 30 | now := time.Now() 31 | secs := now.Unix() 32 | usecs := now.UnixMicro() - secs*1e6 33 | return (float64(secs) + float64(usecs)*1e-6) - 1e-3 34 | } 35 | 36 | func getTimeBetweenNTP(t0 float64, tx time.Time) uint64 { 37 | secs := tx.Unix() 38 | usecs := tx.UnixMicro() - secs*1e6 39 | tt := (float64(secs) + float64(usecs)*1e-6) - t0 40 | ntp64 := uint64(tt * 65536.0) 41 | ntp := 0xFFFFFFFF & ntp64 42 | return ntp 43 | } 44 | 45 | type localRFC8888Generator struct { 46 | rx *screamcgo.Rx 47 | m Metricer 48 | reportCB func(rtp.RTCPFeedback) 49 | ackedPkts chan ackedPkt 50 | t0 float64 51 | } 52 | 53 | func newLocalRFC8888Generator(ssrc uint32, m Metricer, reportCB func(rtp.RTCPFeedback)) *localRFC8888Generator { 54 | return &localRFC8888Generator{ 55 | rx: screamcgo.NewRx(0), 56 | m: m, 57 | reportCB: reportCB, 58 | ackedPkts: make(chan ackedPkt, 1000), 59 | t0: getNTPT0(), 60 | } 61 | } 62 | 63 | func (f *localRFC8888Generator) ntpTime(t time.Time) uint64 { 64 | return getTimeBetweenNTP(f.t0, t) 65 | } 66 | 67 | func (f *localRFC8888Generator) ack(pkt ackedPkt) { 68 | f.ackedPkts <- pkt 69 | } 70 | 71 | func (f *localRFC8888Generator) run(ctx context.Context) { 72 | for { 73 | select { 74 | case pkt := <-f.ackedPkts: 75 | t := time.Now() 76 | metrics := f.m.Metrics() 77 | 78 | var lastTS uint64 79 | sent := f.ntpTime(pkt.sentTS) 80 | rttNTP := metrics.LatestRTT.Seconds() * 65536 81 | lastTS = sent + uint64(rttNTP)/2 82 | f.rx.Receive(lastTS, pkt.ssrc, pkt.size, pkt.seqNr, 0) 83 | 84 | if ok, fb := f.rx.CreateStandardizedFeedback(lastTS, true); ok { 85 | f.reportCB(rtp.RTCPFeedback{ 86 | Buffer: fb, 87 | Attributes: map[interface{}]interface{}{"timestamp": t}, 88 | }) 89 | } 90 | 91 | case <-ctx.Done(): 92 | return 93 | } 94 | } 95 | } 96 | -------------------------------------------------------------------------------- /udp/receiver.go: -------------------------------------------------------------------------------- 1 | package udp 2 | 3 | import ( 4 | "context" 5 | "errors" 6 | "log" 7 | "net" 8 | "net/netip" 9 | 10 | "github.com/pion/interceptor" 11 | "github.com/pion/rtcp" 12 | ) 13 | 14 | type ServerOption func(*ServerConfig) error 15 | 16 | type ServerConfig struct { 17 | localAddr string 18 | } 19 | 20 | type Server struct { 21 | *ServerConfig 22 | onNewHandler func(*Handler) 23 | } 24 | 25 | func NewServer(opts ...ServerOption) (*Server, error) { 26 | s := &Server{ 27 | ServerConfig: &ServerConfig{ 28 | localAddr: ":4242", 29 | }, 30 | onNewHandler: nil, 31 | } 32 | for _, opt := range opts { 33 | if err := opt(s.ServerConfig); err != nil { 34 | return nil, err 35 | } 36 | } 37 | return s, nil 38 | } 39 | 40 | func (s *Server) OnNewHandler(f func(*Handler)) { 41 | s.onNewHandler = f 42 | } 43 | 44 | func (s *Server) Start(ctx context.Context) error { 45 | conn, err := listenUDP(s.localAddr) 46 | if err != nil { 47 | return err 48 | } 49 | go func() { 50 | <-ctx.Done() 51 | if err := conn.Close(); err != nil { 52 | log.Printf("failed to close UDP conn: %v", err) 53 | } 54 | }() 55 | 56 | handlers := make(map[netip.AddrPort]*Handler) 57 | for { 58 | buf := make([]byte, 1500) // TODO: Better/dynamic MTU? 59 | n, addr, err := conn.ReadFromUDP(buf) 60 | if err != nil { 61 | if errors.Is(err, net.ErrClosed) { 62 | return nil 63 | } 64 | log.Printf("ReadFromUDP error, exiting: %v", err) 65 | return err 66 | } 67 | handler, ok := handlers[addr.AddrPort()] 68 | if !ok { 69 | handler = &Handler{ 70 | reader: nil, 71 | addr: addr, 72 | conn: conn, 73 | } 74 | handlers[addr.AddrPort()] = handler 75 | s.onNewHandler(handler) 76 | } 77 | handler.receive(pkt{ 78 | buffer: buf[:n], 79 | }) 80 | } 81 | } 82 | 83 | type pkt struct { 84 | buffer []byte 85 | } 86 | 87 | type Handler struct { 88 | reader interceptor.RTPReader 89 | addr *net.UDPAddr 90 | conn *net.UDPConn 91 | } 92 | 93 | func (h *Handler) SetRTPReader(r interceptor.RTPReader) { 94 | h.reader = r 95 | } 96 | 97 | func (h *Handler) receive(p pkt) { 98 | if _, _, err := h.reader.Read(p.buffer, interceptor.Attributes{}); err != nil { 99 | log.Printf("failed to process incoming packet: %v", err) 100 | } 101 | } 102 | 103 | func (h *Handler) WriteRTCP(pkts []rtcp.Packet, attributes interceptor.Attributes) (int, error) { 104 | buf, err := rtcp.Marshal(pkts) 105 | if err != nil { 106 | return 0, err 107 | } 108 | return h.conn.WriteTo(buf, h.addr) 109 | } 110 | -------------------------------------------------------------------------------- /rtp/bandwidth_estimator.go: -------------------------------------------------------------------------------- 1 | package rtp 2 | 3 | import ( 4 | "context" 5 | "fmt" 6 | "log" 7 | "time" 8 | 9 | "github.com/mengelbart/rtp-over-quic/logging" 10 | "github.com/mengelbart/rtp-over-quic/scream" 11 | "github.com/pion/interceptor/pkg/cc" 12 | ) 13 | 14 | type Media interface { 15 | SetTargetBitsPerSecond(uint) 16 | } 17 | 18 | type BandwidthEstimator struct { 19 | media Media 20 | 21 | screamBWE chan scream.BandwidthEstimator 22 | gccBWE chan cc.BandwidthEstimator 23 | 24 | logFile string 25 | } 26 | 27 | func NewBandwidthEstimator(logfile string) (*BandwidthEstimator, error) { 28 | return &BandwidthEstimator{ 29 | media: nil, 30 | screamBWE: make(chan scream.BandwidthEstimator), 31 | gccBWE: make(chan cc.BandwidthEstimator), 32 | logFile: logfile, 33 | }, nil 34 | } 35 | 36 | func (e *BandwidthEstimator) SetMedia(m Media) { 37 | e.media = m 38 | } 39 | 40 | func (e *BandwidthEstimator) OnNewSCReAMEstimator(_ string, bwe scream.BandwidthEstimator) { 41 | e.screamBWE <- bwe 42 | } 43 | 44 | func (e *BandwidthEstimator) OnNewGCCEstimator(_ string, bwe cc.BandwidthEstimator) { 45 | e.gccBWE <- bwe 46 | } 47 | 48 | func (e *BandwidthEstimator) RunGCC(ctx context.Context) error { 49 | panic("TODO") 50 | } 51 | 52 | func (e *BandwidthEstimator) RunSCReAM(ctx context.Context) error { 53 | ticker := time.NewTicker(100 * time.Millisecond) 54 | 55 | ccLogFile, err := logging.GetLogFile(e.logFile) 56 | if err != nil { 57 | return err 58 | } 59 | defer ccLogFile.Close() 60 | 61 | log.Printf("waiting for bwe") 62 | var bwe scream.BandwidthEstimator 63 | select { 64 | case bwe = <-e.screamBWE: 65 | case <-ctx.Done(): 66 | return nil 67 | } 68 | 69 | for { 70 | select { 71 | case bwe = <-e.screamBWE: 72 | case now := <-ticker.C: 73 | target, err := bwe.GetTargetBitrate(0) 74 | if err != nil { 75 | log.Printf("got error on bwe.GetTargetBitrate: %v", err) 76 | continue 77 | } 78 | if target < 0 { 79 | log.Printf("[SCReAM] got negative target bitrate: %v", target) 80 | continue 81 | } 82 | stats := bwe.GetStats() 83 | fmt.Fprintf( 84 | ccLogFile, "%v, %v, %v, %v, %v, %v, %v, %v, %v, %v, %v\n", 85 | now.UnixMilli(), 86 | target, 87 | stats["queueDelay"], 88 | stats["sRTT"], 89 | stats["cwnd"], 90 | stats["bytesInFlightLog"], 91 | stats["rateLostStream0"], 92 | stats["rateTransmittedStream0"], 93 | stats["rateAckedStream0"], 94 | stats["hiSeqAckStream0"], 95 | stats["isInFastStart"], 96 | ) 97 | if e.media != nil { 98 | e.media.SetTargetBitsPerSecond(uint(target)) 99 | } 100 | case <-ctx.Done(): 101 | return nil 102 | } 103 | } 104 | } 105 | -------------------------------------------------------------------------------- /scream/rtp_queue.go: -------------------------------------------------------------------------------- 1 | package scream 2 | 3 | import ( 4 | "container/list" 5 | "sync" 6 | ) 7 | 8 | type rtpQueueItem struct { 9 | packet *packet 10 | ts float64 11 | } 12 | 13 | type queue struct { 14 | m sync.RWMutex 15 | 16 | bytesInQueue int 17 | queue *list.List 18 | } 19 | 20 | func newQueue() RTPQueue { 21 | return &queue{queue: list.New()} 22 | } 23 | 24 | func (q *queue) SizeOfNextRTP() int { 25 | q.m.RLock() 26 | defer q.m.RUnlock() 27 | 28 | if q.queue.Len() <= 0 { 29 | return 0 30 | } 31 | 32 | return q.queue.Front().Value.(rtpQueueItem).packet.rtp.MarshalSize() 33 | } 34 | 35 | func (q *queue) SeqNrOfNextRTP() uint16 { 36 | q.m.RLock() 37 | defer q.m.RUnlock() 38 | 39 | if q.queue.Len() <= 0 { 40 | return 0 41 | } 42 | 43 | return q.queue.Front().Value.(rtpQueueItem).packet.rtp.SequenceNumber 44 | } 45 | 46 | func (q *queue) SeqNrOfLastRTP() uint16 { 47 | q.m.RLock() 48 | defer q.m.RUnlock() 49 | 50 | if q.queue.Len() <= 0 { 51 | return 0 52 | } 53 | 54 | return q.queue.Back().Value.(rtpQueueItem).packet.rtp.SequenceNumber 55 | } 56 | 57 | func (q *queue) BytesInQueue() int { 58 | q.m.Lock() 59 | defer q.m.Unlock() 60 | 61 | return q.bytesInQueue 62 | } 63 | 64 | func (q *queue) SizeOfQueue() int { 65 | q.m.RLock() 66 | defer q.m.RUnlock() 67 | 68 | return q.queue.Len() 69 | } 70 | 71 | func (q *queue) GetDelay(ts float64) float64 { 72 | q.m.Lock() 73 | defer q.m.Unlock() 74 | 75 | if q.queue.Len() <= 0 { 76 | return 0 77 | } 78 | pkt := q.queue.Front().Value.(rtpQueueItem) 79 | d := ts - pkt.ts 80 | if d < 0 { 81 | return 0 82 | } 83 | //log.Printf("ts=%v, pkt.ts=%v delay=ts-pkt.ts=%v\n", ts, pkt.ts, d) 84 | return d 85 | } 86 | 87 | func (q *queue) GetSizeOfLastFrame() int { 88 | q.m.RLock() 89 | defer q.m.RUnlock() 90 | 91 | if q.queue.Len() <= 0 { 92 | return 0 93 | } 94 | 95 | return q.queue.Back().Value.(rtpQueueItem).packet.rtp.MarshalSize() 96 | } 97 | 98 | func (q *queue) Clear() int { 99 | q.m.Lock() 100 | defer q.m.Unlock() 101 | 102 | size := q.queue.Len() 103 | q.bytesInQueue = 0 104 | q.queue.Init() 105 | return size 106 | } 107 | 108 | func (q *queue) Enqueue(pkt *packet, ts float64) { 109 | q.m.Lock() 110 | defer q.m.Unlock() 111 | 112 | q.bytesInQueue += pkt.rtp.MarshalSize() 113 | q.queue.PushBack(rtpQueueItem{ 114 | packet: pkt, 115 | ts: float64(ts), 116 | }) 117 | } 118 | 119 | func (q *queue) Dequeue() *packet { 120 | q.m.Lock() 121 | defer q.m.Unlock() 122 | 123 | if q.queue.Len() <= 0 { 124 | return nil 125 | } 126 | 127 | front := q.queue.Front() 128 | q.queue.Remove(front) 129 | packet := front.Value.(rtpQueueItem).packet 130 | q.bytesInQueue -= packet.rtp.MarshalSize() 131 | return packet 132 | } 133 | -------------------------------------------------------------------------------- /udp/sender.go: -------------------------------------------------------------------------------- 1 | package udp 2 | 3 | import ( 4 | "context" 5 | "errors" 6 | "log" 7 | "net" 8 | 9 | "github.com/mengelbart/rtp-over-quic/rtp" 10 | "github.com/pion/interceptor" 11 | pionrtp "github.com/pion/rtp" 12 | ) 13 | 14 | type SenderOption func(*SenderConfig) error 15 | 16 | func RemoteAddress(addr string) SenderOption { 17 | return func(sc *SenderConfig) error { 18 | sc.remoteAddr = addr 19 | return nil 20 | } 21 | } 22 | 23 | type SenderConfig struct { 24 | remoteAddr string 25 | } 26 | 27 | type Sender struct { 28 | *SenderConfig 29 | 30 | conn *net.UDPConn 31 | interceptorRegistry *interceptor.Registry 32 | interceptor interceptor.Interceptor 33 | } 34 | 35 | func NewSender(i *interceptor.Registry, opts ...SenderOption) (*Sender, error) { 36 | s := &Sender{ 37 | SenderConfig: &SenderConfig{remoteAddr: ""}, 38 | conn: nil, 39 | interceptorRegistry: i, 40 | } 41 | for _, opt := range opts { 42 | if err := opt(s.SenderConfig); err != nil { 43 | return nil, err 44 | } 45 | } 46 | return s, nil 47 | } 48 | 49 | func (s *Sender) Connect(ctx context.Context) error { 50 | conn, err := connectUDP(s.remoteAddr) 51 | if err != nil { 52 | return err 53 | } 54 | s.conn = conn 55 | 56 | i, err := s.interceptorRegistry.Build("") 57 | if err != nil { 58 | return err 59 | } 60 | s.interceptor = i 61 | 62 | rtcpReader := s.interceptor.BindRTCPReader(interceptor.RTCPReaderFunc( 63 | func(b []byte, a interceptor.Attributes) (int, interceptor.Attributes, error) { 64 | return len(b), a, nil 65 | }), 66 | ) 67 | 68 | rtcpChan := make(chan rtp.RTCPFeedback) 69 | go rtp.ReadRTCP(ctx, rtcpReader, rtcpChan) 70 | go s.readFromNetwork(ctx, rtcpChan) 71 | 72 | return nil 73 | } 74 | 75 | func (s *Sender) readFromNetwork(ctx context.Context, rtcpChan chan rtp.RTCPFeedback) { 76 | buf := make([]byte, 1500) // TODO: Better MTU? 77 | for { 78 | n, err := s.conn.Read(buf) 79 | if err != nil { 80 | if errors.Is(err, net.ErrClosed) { 81 | log.Printf("Exiting reader routine: UDP socket error: %v", err) 82 | return 83 | } 84 | log.Printf("failed to receive UDP datagram: %v", err) 85 | continue 86 | } 87 | select { 88 | case rtcpChan <- rtp.RTCPFeedback{ 89 | Buffer: buf[:n], 90 | Attributes: nil, 91 | }: 92 | case <-ctx.Done(): 93 | default: 94 | log.Println("RTCP buffer full, dropping packet") 95 | } 96 | } 97 | } 98 | 99 | func (s *Sender) NewMediaStream() interceptor.RTPWriter { 100 | return s.interceptor.BindLocalStream(&interceptor.StreamInfo{}, interceptor.RTPWriterFunc( 101 | func(header *pionrtp.Header, payload []byte, _ interceptor.Attributes) (int, error) { 102 | 103 | headerBuf, err := header.Marshal() 104 | if err != nil { 105 | return 0, err 106 | } 107 | return s.conn.Write(append(headerBuf, payload...)) 108 | }, 109 | )) 110 | } 111 | -------------------------------------------------------------------------------- /udp/udp.go: -------------------------------------------------------------------------------- 1 | package udp 2 | 3 | import ( 4 | "errors" 5 | "fmt" 6 | "log" 7 | "net" 8 | "strings" 9 | "syscall" 10 | 11 | "golang.org/x/sys/unix" 12 | ) 13 | 14 | const desiredReceiveBufferSize = (1 << 20) * 2 // 2 MB 15 | 16 | func listenUDP(addr string) (*net.UDPConn, error) { 17 | a, err := net.ResolveUDPAddr("udp", addr) 18 | if err != nil { 19 | return nil, err 20 | } 21 | 22 | conn, err := net.ListenUDP("udp", a) 23 | if err != nil { 24 | return nil, err 25 | } 26 | if err = SetReceiveBuffer(conn); err != nil { 27 | if !strings.Contains(err.Error(), "use of closed network connection") { 28 | log.Printf("%s. See https://github.com/lucas-clemente/quic-go/wiki/UDP-Receive-Buffer-Size for details.", err) 29 | } else { 30 | return nil, err 31 | } 32 | } 33 | return conn, nil 34 | } 35 | 36 | func connectUDP(addr string) (*net.UDPConn, error) { 37 | a, err := net.ResolveUDPAddr("udp", addr) 38 | if err != nil { 39 | return nil, err 40 | } 41 | conn, err := net.DialUDP("udp", nil, a) 42 | if err != nil { 43 | return nil, err 44 | } 45 | if err = SetReceiveBuffer(conn); err != nil { 46 | if !strings.Contains(err.Error(), "use of closed network connection") { 47 | log.Printf("%s. See https://github.com/lucas-clemente/quic-go/wiki/UDP-Receive-Buffer-Size for details.", err) 48 | } else { 49 | return nil, err 50 | } 51 | } 52 | return conn, nil 53 | } 54 | 55 | func SetReceiveBuffer(c net.PacketConn) error { 56 | conn, ok := c.(interface{ SetReadBuffer(int) error }) 57 | if !ok { 58 | return errors.New("connection doesn't allow setting of receive buffer size. Not a *net.UDPConn?") 59 | } 60 | size, err := inspectReadBuffer(c) 61 | if err != nil { 62 | return fmt.Errorf("failed to determine receive buffer size: %w", err) 63 | } 64 | if size >= desiredReceiveBufferSize { 65 | log.Printf("Conn has receive buffer of %d kiB (wanted: at least %d kiB)", size/1024, desiredReceiveBufferSize/1024) 66 | return nil 67 | } 68 | if err = conn.SetReadBuffer(desiredReceiveBufferSize); err != nil { 69 | return fmt.Errorf("failed to increase receive buffer size: %w", err) 70 | } 71 | newSize, err := inspectReadBuffer(c) 72 | if err != nil { 73 | return fmt.Errorf("failed to determine receive buffer size: %w", err) 74 | } 75 | if newSize == size { 76 | return fmt.Errorf("failed to increase receive buffer size (wanted: %d kiB, got %d kiB)", desiredReceiveBufferSize/1024, newSize/1024) 77 | } 78 | if newSize < desiredReceiveBufferSize { 79 | return fmt.Errorf("failed to sufficiently increase receive buffer size (was: %d kiB, wanted: %d kiB, got: %d kiB)", size/1024, desiredReceiveBufferSize/1024, newSize/1024) 80 | } 81 | return nil 82 | } 83 | 84 | func inspectReadBuffer(c interface{}) (int, error) { 85 | conn, ok := c.(interface { 86 | SyscallConn() (syscall.RawConn, error) 87 | }) 88 | if !ok { 89 | return 0, errors.New("doesn't have a SyscallConn") 90 | } 91 | rawConn, err := conn.SyscallConn() 92 | if err != nil { 93 | return 0, fmt.Errorf("couldn't get syscall.RawConn: %w", err) 94 | } 95 | var size int 96 | var serr error 97 | if err := rawConn.Control(func(fd uintptr) { 98 | size, serr = unix.GetsockoptInt(int(fd), unix.SOL_SOCKET, unix.SO_RCVBUF) 99 | }); err != nil { 100 | return 0, err 101 | } 102 | return size, serr 103 | } 104 | -------------------------------------------------------------------------------- /tcp/receiver.go: -------------------------------------------------------------------------------- 1 | package tcp 2 | 3 | import ( 4 | "context" 5 | "encoding/binary" 6 | "errors" 7 | "io" 8 | "log" 9 | "net" 10 | "sync" 11 | 12 | "github.com/pion/interceptor" 13 | "github.com/pion/rtcp" 14 | ) 15 | 16 | type ServerOption func(*ServerConfig) error 17 | 18 | func LocalAddress(addr string) ServerOption { 19 | return func(sc *ServerConfig) error { 20 | sc.localAddr = addr 21 | return nil 22 | } 23 | } 24 | 25 | type ServerConfig struct { 26 | localAddr string 27 | } 28 | 29 | type Server struct { 30 | *ServerConfig 31 | onNewHandler func(*Handler) 32 | } 33 | 34 | func NewServer(opts ...ServerOption) (*Server, error) { 35 | s := &Server{ 36 | ServerConfig: &ServerConfig{ 37 | localAddr: ":4242", 38 | }, 39 | onNewHandler: nil, 40 | } 41 | for _, opt := range opts { 42 | if err := opt(s.ServerConfig); err != nil { 43 | return nil, err 44 | } 45 | } 46 | return s, nil 47 | } 48 | 49 | func (s *Server) OnNewHandler(f func(*Handler)) { 50 | s.onNewHandler = f 51 | } 52 | 53 | func (s *Server) Start(ctx context.Context) error { 54 | listener, err := listenTCP(s.localAddr) 55 | if err != nil { 56 | return err 57 | } 58 | log.Printf("listening on %v...", listener.Addr()) 59 | 60 | var wg sync.WaitGroup 61 | defer wg.Wait() 62 | 63 | for { 64 | conn, err := listener.AcceptTCP() 65 | if err != nil { 66 | return err 67 | } 68 | wg.Add(1) 69 | go func() { 70 | defer wg.Done() 71 | h := Handler{ 72 | reader: nil, 73 | conn: conn, 74 | } 75 | s.onNewHandler(&h) 76 | h.handle(ctx) 77 | }() 78 | } 79 | } 80 | 81 | type pkt struct { 82 | buffer []byte 83 | } 84 | 85 | type Handler struct { 86 | reader interceptor.RTPReader 87 | conn *net.TCPConn 88 | } 89 | 90 | func (h *Handler) SetRTPReader(r interceptor.RTPReader) { 91 | h.reader = r 92 | } 93 | 94 | func (h *Handler) handle(ctx context.Context) { 95 | pktChan := make(chan pkt) 96 | 97 | var wg sync.WaitGroup 98 | defer wg.Wait() 99 | 100 | go h.receive(pktChan) 101 | 102 | for { 103 | select { 104 | case p := <-pktChan: 105 | if h.reader != nil { 106 | if _, _, err := h.reader.Read(p.buffer, interceptor.Attributes{}); err != nil { 107 | log.Printf("failed to process incoming packet: %v", err) 108 | } 109 | } 110 | case <-ctx.Done(): 111 | return 112 | } 113 | } 114 | } 115 | 116 | func (h *Handler) receive(pktChan chan<- pkt) { 117 | prefix := make([]byte, 2) 118 | for { 119 | if _, err := io.ReadFull(h.conn, prefix); err != nil { 120 | if errors.Is(err, io.EOF) { 121 | return 122 | } 123 | log.Printf("failed to read length from TCP conn: %v, exiting", err) 124 | continue 125 | } 126 | length := binary.BigEndian.Uint16(prefix) 127 | buf := make([]byte, length) 128 | if _, err := io.ReadFull(h.conn, buf); err != nil { 129 | if errors.Is(err, io.EOF) { 130 | return 131 | } 132 | log.Printf("failed to read complete frame from TCP conn: %v, exiting", err) 133 | continue 134 | } 135 | pktChan <- pkt{ 136 | buffer: buf, 137 | } 138 | } 139 | } 140 | 141 | func (h *Handler) WriteRTCP(pkts []rtcp.Packet, attributes interceptor.Attributes) (int, error) { 142 | buf, err := rtcp.Marshal(pkts) 143 | if err != nil { 144 | return 0, err 145 | } 146 | length := make([]byte, 2) 147 | binary.BigEndian.PutUint16(length, uint16(len(buf))) 148 | return h.conn.Write(append(length, buf...)) 149 | } 150 | -------------------------------------------------------------------------------- /tcp/sender.go: -------------------------------------------------------------------------------- 1 | package tcp 2 | 3 | import ( 4 | "context" 5 | "encoding/binary" 6 | "errors" 7 | "io" 8 | "log" 9 | "net" 10 | 11 | "github.com/mengelbart/rtp-over-quic/cc" 12 | "github.com/mengelbart/rtp-over-quic/rtp" 13 | "github.com/pion/interceptor" 14 | pionrtp "github.com/pion/rtp" 15 | ) 16 | 17 | type SenderOption func(*SenderConfig) error 18 | 19 | func RemoteAddress(addr string) SenderOption { 20 | return func(sc *SenderConfig) error { 21 | sc.remoteAddr = addr 22 | return nil 23 | } 24 | } 25 | 26 | func SetTCPCongestionControlAlgorithm(algorithm cc.Algorithm) SenderOption { 27 | return func(sc *SenderConfig) error { 28 | sc.cc = algorithm 29 | return nil 30 | } 31 | } 32 | 33 | type SenderConfig struct { 34 | cc cc.Algorithm 35 | remoteAddr string 36 | } 37 | 38 | type Sender struct { 39 | *SenderConfig 40 | 41 | conn *net.TCPConn 42 | interceptorRegistry *interceptor.Registry 43 | interceptor interceptor.Interceptor 44 | } 45 | 46 | func NewSender(r *interceptor.Registry, opts ...SenderOption) (*Sender, error) { 47 | s := &Sender{ 48 | SenderConfig: &SenderConfig{}, 49 | conn: nil, 50 | interceptorRegistry: r, 51 | } 52 | for _, opt := range opts { 53 | if err := opt(s.SenderConfig); err != nil { 54 | return nil, err 55 | } 56 | } 57 | return s, nil 58 | } 59 | 60 | func (s *Sender) Connect(ctx context.Context) error { 61 | conn, err := connectTCP(s.remoteAddr, s.cc) 62 | if err != nil { 63 | return err 64 | } 65 | s.conn = conn 66 | 67 | i, err := s.interceptorRegistry.Build("") 68 | if err != nil { 69 | return err 70 | } 71 | s.interceptor = i 72 | 73 | rtcpReader := s.interceptor.BindRTCPReader(interceptor.RTCPReaderFunc( 74 | func(b []byte, a interceptor.Attributes) (int, interceptor.Attributes, error) { 75 | return len(b), a, nil 76 | }), 77 | ) 78 | rtcpChan := make(chan rtp.RTCPFeedback) 79 | go rtp.ReadRTCP(ctx, rtcpReader, rtcpChan) 80 | go s.readFromNetwork(ctx, rtcpChan) 81 | 82 | return nil 83 | } 84 | 85 | func (s *Sender) readFromNetwork(ctx context.Context, rtcpChan chan rtp.RTCPFeedback) { 86 | buf := make([]byte, 1500) // TODO: Better MTU size? 87 | for { 88 | prefix := make([]byte, 2) 89 | if _, err := io.ReadFull(s.conn, prefix); err != nil { 90 | if errors.Is(err, net.ErrClosed) { 91 | return 92 | } 93 | log.Printf("failed to read length from TCP conn: %v, exiting", err) 94 | continue 95 | } 96 | length := binary.BigEndian.Uint16(prefix) 97 | tmp := make([]byte, length) 98 | if _, err := io.ReadFull(s.conn, tmp); err != nil { 99 | if errors.Is(err, net.ErrClosed) { 100 | return 101 | } 102 | log.Printf("failed to read complete frame from TCP conn: %v, exiting", err) 103 | continue 104 | } 105 | n := copy(buf, tmp) 106 | if n < int(length) { 107 | log.Printf("WARNING: buffer too short, TCP reader dropped %v bytes", int(length)-n) 108 | } 109 | rtcpChan <- rtp.RTCPFeedback{ 110 | Buffer: buf[:n], 111 | Attributes: nil, 112 | } 113 | } 114 | } 115 | 116 | func (s *Sender) NewMediaStream() interceptor.RTPWriter { 117 | return s.interceptor.BindLocalStream(&interceptor.StreamInfo{}, interceptor.RTPWriterFunc( 118 | func(header *pionrtp.Header, payload []byte, _ interceptor.Attributes) (int, error) { 119 | headerBuf, err := header.Marshal() 120 | if err != nil { 121 | return 0, err 122 | } 123 | msg := append(headerBuf, payload...) 124 | buf := make([]byte, 2) 125 | binary.BigEndian.PutUint16(buf[0:2], uint16(len(msg))) 126 | return s.conn.Write(append(buf, msg...)) 127 | }, 128 | )) 129 | } 130 | -------------------------------------------------------------------------------- /cmd/root.go: -------------------------------------------------------------------------------- 1 | package cmd 2 | 3 | import ( 4 | "errors" 5 | "log" 6 | "os" 7 | "runtime/pprof" 8 | 9 | "github.com/spf13/cobra" 10 | ) 11 | 12 | var ( 13 | transport string 14 | addr string 15 | 16 | tcpCongAlg string 17 | quicCC string 18 | 19 | codec string 20 | 21 | rtpDumpFile string 22 | rtcpDumpFile string 23 | qlogDir string 24 | keyLogFile string 25 | 26 | cpuProfile string 27 | goroutineProfile string 28 | heapProfile string 29 | allocsProfile string 30 | blockProfile string 31 | mutexProfile string 32 | ) 33 | 34 | var errInvalidTransport = errors.New("unknown transport protocol") 35 | 36 | func init() { 37 | rootCmd.PersistentFlags().StringVar(&transport, "transport", "quic", "Transport protocol to use: quic, udp or tcp") 38 | rootCmd.PersistentFlags().StringVarP(&addr, "addr", "a", ":4242", "QUIC server address") 39 | 40 | rootCmd.PersistentFlags().StringVar(&tcpCongAlg, "tcp-congestion", "reno", "TCP Congestion control algorithm to use, only when --transport is tcp") 41 | rootCmd.PersistentFlags().StringVar(&quicCC, "quic-cc", "none", "QUIC congestion control algorithm. ('none', 'newreno')") 42 | 43 | rootCmd.PersistentFlags().StringVarP(&codec, "codec", "c", "h264", "Media codec") 44 | 45 | rootCmd.PersistentFlags().StringVar(&rtpDumpFile, "rtp-dump", "", "RTP dump file, 'stdout' for Stdout") 46 | rootCmd.PersistentFlags().StringVar(&rtcpDumpFile, "rtcp-dump", "", "RTCP dump file, 'stdout' for Stdout") 47 | rootCmd.PersistentFlags().StringVar(&qlogDir, "qlog", "", "QLOG directory. No logs if empty. Use 'sdtout' for Stdout or '' for a QLOG file named '/.qlog'") 48 | rootCmd.PersistentFlags().StringVar(&keyLogFile, "keylogfile", "", "TLS keys for decrypting traffic e.g. using wireshark") 49 | 50 | rootCmd.PersistentFlags().StringVar(&cpuProfile, "pprof-cpu", "", "Create pprof CPU profile with given filename") 51 | rootCmd.PersistentFlags().StringVar(&goroutineProfile, "pprof-goroutine", "", "Create pprof 'goroutine' profile with given filename") 52 | rootCmd.PersistentFlags().StringVar(&heapProfile, "pprof-heap", "", "Create pprof 'heap' profile with given filename") 53 | rootCmd.PersistentFlags().StringVar(&allocsProfile, "pprof-allocs", "", "Create pprof 'allocs' profile with given filename") 54 | rootCmd.PersistentFlags().StringVar(&blockProfile, "pprof-block", "", "Create pprof 'block' profile with given filename") 55 | rootCmd.PersistentFlags().StringVar(&mutexProfile, "pprof-mutex", "", "Create pprof 'mutex' profile with given filename") 56 | } 57 | 58 | var rootCmd = &cobra.Command{} 59 | 60 | func Execute() { 61 | done, err := setupProfiling( 62 | cpuProfile, 63 | goroutineProfile, 64 | heapProfile, 65 | allocsProfile, 66 | blockProfile, 67 | mutexProfile, 68 | ) 69 | if err != nil { 70 | log.Fatal(err) 71 | } 72 | defer func() { 73 | if err := done(); err != nil { 74 | log.Fatal(err) 75 | } 76 | }() 77 | if err := rootCmd.Execute(); err != nil { 78 | log.Fatal(err) 79 | } 80 | } 81 | 82 | func setupProfiling(cpu, goroutine, heap, allocs, block, mutex string) (func() error, error) { 83 | doneFns := []func() error{} 84 | concatDoneFns := func(fns []func() error) func() error { 85 | return func() error { 86 | for _, f := range fns { 87 | if err := f(); err != nil { 88 | return err 89 | } 90 | } 91 | return nil 92 | } 93 | } 94 | if cpu != "" { 95 | f, err := os.Create(cpu) 96 | if err != nil { 97 | return concatDoneFns(nil), err 98 | } 99 | if err := pprof.StartCPUProfile(f); err != nil { 100 | return concatDoneFns(nil), err 101 | } 102 | doneFns = append(doneFns, func() error { 103 | pprof.StopCPUProfile() 104 | return nil 105 | }) 106 | } 107 | for k, v := range map[string]string{ 108 | "goroutine": goroutine, 109 | "heap": heap, 110 | "allocs": allocs, 111 | "block": block, 112 | "mutex": mutex, 113 | } { 114 | if v != "" { 115 | f, err := os.Create(v) 116 | if err != nil { 117 | return concatDoneFns(doneFns), err 118 | } 119 | doneFns = append(doneFns, func() error { 120 | return pprof.Lookup(k).WriteTo(f, 0) 121 | }) 122 | } 123 | } 124 | return concatDoneFns(doneFns), nil 125 | } 126 | -------------------------------------------------------------------------------- /rtp/interceptor.go: -------------------------------------------------------------------------------- 1 | package rtp 2 | 3 | import ( 4 | "io" 5 | "time" 6 | 7 | "github.com/mengelbart/rtp-over-quic/logging" 8 | "github.com/mengelbart/rtp-over-quic/scream" 9 | "github.com/pion/interceptor" 10 | "github.com/pion/interceptor/pkg/cc" 11 | "github.com/pion/interceptor/pkg/gcc" 12 | "github.com/pion/interceptor/pkg/packetdump" 13 | "github.com/pion/interceptor/pkg/rfc8888" 14 | "github.com/pion/interceptor/pkg/twcc" 15 | ) 16 | 17 | const feedbackInterval = 10 * time.Millisecond 18 | 19 | type Option func(*interceptor.Registry) error 20 | 21 | func New(options ...Option) (*interceptor.Registry, error) { 22 | registry := interceptor.Registry{} 23 | for _, option := range options { 24 | if err := option(®istry); err != nil { 25 | return nil, err 26 | } 27 | } 28 | return ®istry, nil 29 | } 30 | 31 | func RegisterSenderPacketLog(rtpLogFileName, rtcpLogFileName string) Option { 32 | return func(r *interceptor.Registry) error { 33 | rtpDumpFile, err := logging.GetLogFile(rtpLogFileName) 34 | if err != nil { 35 | return err 36 | } 37 | rtcpDumpFile, err := logging.GetLogFile(rtcpLogFileName) 38 | if err != nil { 39 | return err 40 | } 41 | return registerRTPSenderDumper(r, rtpDumpFile, rtcpDumpFile) 42 | } 43 | } 44 | 45 | func RegisterReceiverPacketLog(rtpLogFileName, rtcpLogFileName string) Option { 46 | return func(r *interceptor.Registry) error { 47 | rtpDumpFile, err := logging.GetLogFile(rtpLogFileName) 48 | if err != nil { 49 | return err 50 | } 51 | rtcpDumpFile, err := logging.GetLogFile(rtcpLogFileName) 52 | if err != nil { 53 | return err 54 | } 55 | return registerRTPReceiverDumper(r, rtpDumpFile, rtcpDumpFile) 56 | } 57 | } 58 | 59 | func registerRTPSenderDumper(r *interceptor.Registry, rtp, rtcp io.Writer) error { 60 | rf := &rtpFormatter{} 61 | rtpDumperInterceptor, err := packetdump.NewSenderInterceptor( 62 | packetdump.RTPFormatter(rf.rtpFormat), 63 | packetdump.RTPWriter(rtp), 64 | ) 65 | if err != nil { 66 | return err 67 | } 68 | 69 | rtcpDumperInterceptor, err := packetdump.NewReceiverInterceptor( 70 | packetdump.RTCPFormatter(rtcpFormat), 71 | packetdump.RTCPWriter(rtcp), 72 | ) 73 | if err != nil { 74 | return err 75 | } 76 | r.Add(rtpDumperInterceptor) 77 | r.Add(rtcpDumperInterceptor) 78 | return nil 79 | } 80 | 81 | func registerRTPReceiverDumper(r *interceptor.Registry, rtp, rtcp io.Writer) error { 82 | rtcpDumperInterceptor, err := packetdump.NewSenderInterceptor( 83 | packetdump.RTCPFormatter(rtcpFormat), 84 | packetdump.RTCPWriter(rtcp), 85 | ) 86 | if err != nil { 87 | return err 88 | } 89 | 90 | rf := &rtpFormatter{} 91 | rtpDumperInterceptor, err := packetdump.NewReceiverInterceptor( 92 | packetdump.RTPFormatter(rf.rtpFormat), 93 | packetdump.RTPWriter(rtp), 94 | ) 95 | if err != nil { 96 | return err 97 | } 98 | r.Add(rtcpDumperInterceptor) 99 | r.Add(rtpDumperInterceptor) 100 | return nil 101 | } 102 | 103 | func RegisterTWCC() Option { 104 | return func(r *interceptor.Registry) error { 105 | fbFactory, err := twcc.NewSenderInterceptor(twcc.SendInterval(feedbackInterval)) 106 | if err != nil { 107 | return err 108 | } 109 | r.Add(fbFactory) 110 | return nil 111 | } 112 | } 113 | 114 | func RegisterTWCCHeaderExtension() Option { 115 | return func(r *interceptor.Registry) error { 116 | headerExtension, err := twcc.NewHeaderExtensionInterceptor() 117 | if err != nil { 118 | return err 119 | } 120 | r.Add(headerExtension) 121 | return nil 122 | } 123 | } 124 | 125 | func RegisterGCC(cb cc.NewPeerConnectionCallback) Option { 126 | return func(r *interceptor.Registry) error { 127 | fx := func() (cc.BandwidthEstimator, error) { 128 | return gcc.NewSendSideBWE(gcc.SendSideBWEInitialBitrate(100_000), gcc.SendSideBWEPacer(gcc.NewLeakyBucketPacer(100_000))) 129 | } 130 | gccFactory, err := cc.NewInterceptor(fx) 131 | if err != nil { 132 | return err 133 | } 134 | gccFactory.OnNewPeerConnection(cb) 135 | r.Add(gccFactory) 136 | return nil 137 | } 138 | } 139 | 140 | func RegisterRFC8888() Option { 141 | return func(r *interceptor.Registry) error { 142 | var rx *scream.ReceiverInterceptorFactory 143 | rx, err := scream.NewReceiverInterceptor( 144 | scream.ReceiverInterval(feedbackInterval), 145 | ) 146 | if err != nil { 147 | return err 148 | } 149 | r.Add(rx) 150 | return nil 151 | } 152 | } 153 | 154 | func RegisterRFC8888Pion() Option { 155 | return func(r *interceptor.Registry) error { 156 | rx, err := rfc8888.NewSenderInterceptor(rfc8888.SendInterval(feedbackInterval)) 157 | if err != nil { 158 | return err 159 | } 160 | r.Add(rx) 161 | return nil 162 | } 163 | } 164 | 165 | func RegisterSCReAM(cb scream.NewPeerConnectionCallback, initialBitrate int) Option { 166 | return func(r *interceptor.Registry) error { 167 | var tx *scream.SenderInterceptorFactory 168 | tx, err := scream.NewSenderInterceptor( 169 | scream.InitialBitrate(float64(initialBitrate)), 170 | scream.MinBitrate(100_000), 171 | ) 172 | if err != nil { 173 | return err 174 | } 175 | tx.OnNewPeerConnection(cb) 176 | r.Add(tx) 177 | return nil 178 | } 179 | } 180 | -------------------------------------------------------------------------------- /quic/qlog_tracer.go: -------------------------------------------------------------------------------- 1 | package quic 2 | 3 | import ( 4 | "context" 5 | "net" 6 | "sync" 7 | "time" 8 | 9 | "github.com/lucas-clemente/quic-go/logging" 10 | ) 11 | 12 | type RTTTracer struct { 13 | lock sync.Mutex 14 | 15 | MinRTT time.Duration 16 | SmoothedRTT time.Duration 17 | RTTVar time.Duration 18 | LatestRTT time.Duration 19 | } 20 | 21 | func (q *RTTTracer) Metrics() RTTStats { 22 | q.lock.Lock() 23 | defer q.lock.Unlock() 24 | return RTTStats{ 25 | MinRTT: q.MinRTT, 26 | SmoothedRTT: q.SmoothedRTT, 27 | RTTVar: q.RTTVar, 28 | LatestRTT: q.LatestRTT, 29 | } 30 | } 31 | 32 | func (q *RTTTracer) updateMinRTT(minrtt time.Duration) { 33 | q.lock.Lock() 34 | defer q.lock.Unlock() 35 | q.MinRTT = minrtt 36 | } 37 | 38 | func (q *RTTTracer) updateSmoothedRTT(srtt time.Duration) { 39 | q.lock.Lock() 40 | defer q.lock.Unlock() 41 | q.SmoothedRTT = srtt 42 | } 43 | 44 | func (q *RTTTracer) updateRTTVar(rttvar time.Duration) { 45 | q.lock.Lock() 46 | defer q.lock.Unlock() 47 | q.RTTVar = rttvar 48 | } 49 | 50 | func (q *RTTTracer) updateLatestRTT(rttvar time.Duration) { 51 | q.lock.Lock() 52 | defer q.lock.Unlock() 53 | q.LatestRTT = rttvar 54 | } 55 | 56 | func NewTracer() *RTTTracer { 57 | return &RTTTracer{} 58 | } 59 | 60 | func (q *RTTTracer) TracerForConnection(ctx context.Context, p logging.Perspective, odcid logging.ConnectionID) logging.ConnectionTracer { 61 | return &ConnectionRTTTracer{ 62 | t: q, 63 | } 64 | } 65 | 66 | func (q *RTTTracer) SentPacket(addr net.Addr, header *logging.Header, count logging.ByteCount, frames []logging.Frame) { 67 | } 68 | 69 | func (q *RTTTracer) SentVersionNegotiationPacket(_ net.Addr, dest, src logging.ArbitraryLenConnectionID, _ []logging.VersionNumber) { 70 | } 71 | 72 | func (q *RTTTracer) DroppedPacket(addr net.Addr, packetType logging.PacketType, count logging.ByteCount, reason logging.PacketDropReason) { 73 | } 74 | 75 | type ConnectionRTTTracer struct { 76 | t *RTTTracer 77 | } 78 | 79 | func (c *ConnectionRTTTracer) SentPacket(hdr *logging.ExtendedHeader, size logging.ByteCount, ack *logging.AckFrame, frames []logging.Frame) { 80 | } 81 | 82 | func (c *ConnectionRTTTracer) ReceivedPacket(hdr *logging.ExtendedHeader, size logging.ByteCount, frames []logging.Frame) { 83 | } 84 | 85 | func (c *ConnectionRTTTracer) RestoredTransportParameters(parameters *logging.TransportParameters) { 86 | } 87 | 88 | func (c ConnectionRTTTracer) ReceivedVersionNegotiationPacket(dest, src logging.ArbitraryLenConnectionID, _ []logging.VersionNumber) { 89 | } 90 | 91 | func (c ConnectionRTTTracer) NegotiatedVersion(chosen logging.VersionNumber, clientVersions, serverVersions []logging.VersionNumber) { 92 | } 93 | 94 | func (c ConnectionRTTTracer) ReceivedRetry(header *logging.Header) { 95 | } 96 | 97 | func (c ConnectionRTTTracer) ReceivedLongHeaderPacket(hdr *logging.ExtendedHeader, size logging.ByteCount, frames []logging.Frame) { 98 | } 99 | 100 | func (c ConnectionRTTTracer) ReceivedShortHeaderPacket(hdr *logging.ShortHeader, size logging.ByteCount, frames []logging.Frame) { 101 | } 102 | 103 | func (c ConnectionRTTTracer) StartedConnection(local, remote net.Addr, srcConnID, destConnID logging.ConnectionID) { 104 | } 105 | 106 | func (c ConnectionRTTTracer) ClosedConnection(error) { 107 | } 108 | 109 | func (c ConnectionRTTTracer) SentTransportParameters(parameters *logging.TransportParameters) { 110 | } 111 | 112 | func (c ConnectionRTTTracer) ReceivedTransportParameters(parameters *logging.TransportParameters) { 113 | } 114 | 115 | func (c ConnectionRTTTracer) BufferedPacket(packetType logging.PacketType) { 116 | } 117 | 118 | func (c ConnectionRTTTracer) DroppedPacket(packetType logging.PacketType, count logging.ByteCount, reason logging.PacketDropReason) { 119 | } 120 | 121 | func (c *ConnectionRTTTracer) UpdatedMetrics(rttStats *logging.RTTStats, cwnd, bytesInFlight logging.ByteCount, packetsInFlight int) { 122 | min := rttStats.MinRTT() 123 | smoothed := rttStats.SmoothedRTT() 124 | rttVar := rttStats.MeanDeviation() 125 | latestRTT := rttStats.LatestRTT() 126 | if min != 0 { 127 | c.t.updateMinRTT(min) 128 | } 129 | if smoothed != 0 { 130 | c.t.updateSmoothedRTT(smoothed) 131 | } 132 | if rttVar != 0 { 133 | c.t.updateRTTVar(rttVar) 134 | } 135 | if latestRTT != 0 { 136 | c.t.updateLatestRTT(latestRTT) 137 | } 138 | } 139 | 140 | func (c ConnectionRTTTracer) AcknowledgedPacket(logging.EncryptionLevel, logging.PacketNumber) { 141 | } 142 | 143 | func (c ConnectionRTTTracer) LostPacket(level logging.EncryptionLevel, number logging.PacketNumber, reason logging.PacketLossReason) { 144 | } 145 | 146 | func (c ConnectionRTTTracer) UpdatedCongestionState(state logging.CongestionState) { 147 | } 148 | 149 | func (c ConnectionRTTTracer) UpdatedPTOCount(value uint32) { 150 | } 151 | 152 | func (c ConnectionRTTTracer) UpdatedKeyFromTLS(level logging.EncryptionLevel, perspective logging.Perspective) { 153 | } 154 | 155 | func (c ConnectionRTTTracer) UpdatedKey(generation logging.KeyPhase, remote bool) { 156 | } 157 | 158 | func (c ConnectionRTTTracer) DroppedEncryptionLevel(level logging.EncryptionLevel) { 159 | } 160 | 161 | func (c ConnectionRTTTracer) DroppedKey(generation logging.KeyPhase) { 162 | } 163 | 164 | func (c ConnectionRTTTracer) SetLossTimer(timerType logging.TimerType, level logging.EncryptionLevel, time time.Time) { 165 | } 166 | 167 | func (c ConnectionRTTTracer) LossTimerExpired(timerType logging.TimerType, level logging.EncryptionLevel) { 168 | } 169 | 170 | func (c ConnectionRTTTracer) LossTimerCanceled() { 171 | } 172 | 173 | func (c ConnectionRTTTracer) Close() { 174 | } 175 | 176 | func (c ConnectionRTTTracer) Debug(name, msg string) { 177 | } 178 | -------------------------------------------------------------------------------- /cmd/receive.go: -------------------------------------------------------------------------------- 1 | package cmd 2 | 3 | import ( 4 | "context" 5 | "fmt" 6 | "log" 7 | 8 | "github.com/mengelbart/rtp-over-quic/media" 9 | "github.com/mengelbart/rtp-over-quic/quic" 10 | "github.com/mengelbart/rtp-over-quic/rtp" 11 | "github.com/mengelbart/rtp-over-quic/tcp" 12 | "github.com/mengelbart/rtp-over-quic/udp" 13 | "github.com/pion/interceptor" 14 | "github.com/pion/rtcp" 15 | "github.com/spf13/cobra" 16 | ) 17 | 18 | const transportCCURI = "http://www.ietf.org/id/draft-holmer-rmcat-transport-wide-cc-extensions-01" 19 | 20 | type RTCPFeedback int 21 | 22 | type handler interface { 23 | WriteRTCP(pkts []rtcp.Packet, attributes interceptor.Attributes) (int, error) 24 | SetRTPReader(r interceptor.RTPReader) 25 | } 26 | 27 | const ( 28 | RTCP_NONE RTCPFeedback = iota 29 | RTCP_RFC8888 30 | RTCP_RFC8888_PION 31 | RTCP_TWCC 32 | ) 33 | 34 | var ( 35 | sink string 36 | rtcpFeedback string 37 | ) 38 | 39 | func init() { 40 | rootCmd.AddCommand(receiveCmd) 41 | 42 | receiveCmd.Flags().StringVar(&sink, "sink", "autovideosink", "Media sink") 43 | receiveCmd.Flags().StringVar(&rtcpFeedback, "rtcp-feedback", "none", "RTCP Congestion Control Feedback to send ('none', 'rfc8888', 'rfc8888-pion', 'twcc')") 44 | } 45 | 46 | var receiveCmd = &cobra.Command{ 47 | Use: "receive", 48 | Run: func(cmd *cobra.Command, _ []string) { 49 | if err := start(cmd.Context()); err != nil { 50 | log.Fatal(err) 51 | } 52 | }, 53 | } 54 | 55 | func start(ctx context.Context) error { 56 | rc := newReceiverController() 57 | 58 | switch transport { 59 | case "quic", "quic-dgram", "quic-stream", "quic-prio": 60 | return startQUIC(ctx, rc) 61 | case "udp": 62 | return startUDP(ctx, rc) 63 | case "tcp": 64 | return startTCP(ctx, rc) 65 | } 66 | return fmt.Errorf("%w: %v", errInvalidTransport, transport) 67 | } 68 | 69 | func startTCP(ctx context.Context, rc *receiverController) error { 70 | server, err := tcp.NewServer( 71 | tcp.LocalAddress(addr), 72 | ) 73 | if err != nil { 74 | return err 75 | } 76 | server.OnNewHandler(func(h *tcp.Handler) { 77 | rc.handle(h) 78 | }) 79 | return server.Start(ctx) 80 | } 81 | 82 | func startQUIC(ctx context.Context, rc *receiverController) error { 83 | server, err := quic.NewServer( 84 | quic.LocalAddress(addr), 85 | quic.SetServerQLOGDirName(qlogDir), 86 | quic.SetServerSSLKeyLogFileName(keyLogFile), 87 | ) 88 | if err != nil { 89 | return err 90 | } 91 | server.OnNewHandler(func(h *quic.Handler) { 92 | rc.handle(h) 93 | }) 94 | return server.Start(ctx) 95 | } 96 | 97 | func startUDP(ctx context.Context, rc *receiverController) error { 98 | server, err := udp.NewServer() 99 | if err != nil { 100 | return err 101 | } 102 | server.OnNewHandler(func(h *udp.Handler) { 103 | rc.handle(h) 104 | }) 105 | return server.Start(ctx) 106 | } 107 | 108 | type receiverController struct { 109 | mediaOptions []media.ConfigOption 110 | rtpOptions []rtp.Option 111 | } 112 | 113 | func newReceiverController() *receiverController { 114 | mediaOptions := []media.ConfigOption{ 115 | media.Codec(codec), 116 | } 117 | rtpOptions := []rtp.Option{ 118 | rtp.RegisterReceiverPacketLog(rtpDumpFile, rtcpDumpFile), 119 | } 120 | switch getRTCP(rtcpFeedback) { 121 | case RTCP_RFC8888: 122 | rtpOptions = append(rtpOptions, rtp.RegisterRFC8888()) 123 | case RTCP_RFC8888_PION: 124 | rtpOptions = append(rtpOptions, rtp.RegisterRFC8888Pion()) 125 | case RTCP_TWCC: 126 | rtpOptions = append(rtpOptions, rtp.RegisterTWCC()) 127 | } 128 | return &receiverController{ 129 | mediaOptions: mediaOptions, 130 | rtpOptions: rtpOptions, 131 | } 132 | } 133 | 134 | func (c *receiverController) handle(h handler) { 135 | reader := c.addStream(interceptor.RTCPWriterFunc(func(pkts []rtcp.Packet, attributes interceptor.Attributes) (int, error) { 136 | return h.WriteRTCP(pkts, attributes) 137 | })) 138 | 139 | h.SetRTPReader(interceptor.RTCPReaderFunc(func(b []byte, a interceptor.Attributes) (int, interceptor.Attributes, error) { 140 | // TODO: Demultiplex flow ID or otherwise use attributes? 141 | return reader.Read(b, a) 142 | })) 143 | } 144 | 145 | func (c *receiverController) addStream(rtcpWriter interceptor.RTCPWriter) interceptor.RTPReader { 146 | // setup media pipeline 147 | ms, err := media.NewGstreamerSink(sink, c.mediaOptions...) 148 | if err != nil { 149 | panic("TODO") // TODO 150 | } 151 | // build interceptor 152 | r, err := rtp.New(c.rtpOptions...) 153 | if err != nil { 154 | panic("TODO") // TODO 155 | } 156 | i, err := r.Build("") 157 | if err != nil { 158 | panic("TODO") // TODO 159 | } 160 | 161 | go func() { 162 | if err := ms.Play(); err != nil { 163 | log.Printf("media sink failed to play: %v", err) 164 | } 165 | }() 166 | 167 | i.BindRTCPWriter(rtcpWriter) 168 | 169 | return i.BindRemoteStream(&interceptor.StreamInfo{ 170 | RTPHeaderExtensions: []interceptor.RTPHeaderExtension{{URI: transportCCURI, ID: 1}}, 171 | RTCPFeedback: []interceptor.RTCPFeedback{{Type: "ack", Parameter: "ccfb"}}, 172 | }, interceptor.RTCPReaderFunc(func(b []byte, a interceptor.Attributes) (int, interceptor.Attributes, error) { 173 | n, err := ms.Write(b) 174 | if err != nil { 175 | return 0, nil, err 176 | } 177 | 178 | return n, a, nil 179 | })) 180 | } 181 | 182 | func (f RTCPFeedback) String() string { 183 | switch f { 184 | case RTCP_NONE: 185 | return "none" 186 | case RTCP_RFC8888: 187 | return "rfc8888" 188 | case RTCP_RFC8888_PION: 189 | return "rfc8888-pion" 190 | case RTCP_TWCC: 191 | return "twcc" 192 | default: 193 | log.Printf("WARNING: unknown RTCP Congestion Control Feedback type: %v, using default ('none')\n", int(f)) 194 | return "none" 195 | } 196 | } 197 | 198 | func getRTCP(choice string) RTCPFeedback { 199 | switch choice { 200 | case "none": 201 | return RTCP_NONE 202 | case "rfc8888": 203 | return RTCP_RFC8888 204 | case "rfc8888-pion": 205 | return RTCP_RFC8888_PION 206 | case "twcc": 207 | return RTCP_TWCC 208 | default: 209 | log.Printf("WARNING: unknown RTCP Congestion Control Feedback type: %v, using default ('none')\n", choice) 210 | return RTCP_NONE 211 | } 212 | } 213 | -------------------------------------------------------------------------------- /cmd/send.go: -------------------------------------------------------------------------------- 1 | package cmd 2 | 3 | import ( 4 | "context" 5 | "fmt" 6 | "log" 7 | "math/rand" 8 | "time" 9 | 10 | "github.com/mengelbart/rtp-over-quic/cc" 11 | "github.com/mengelbart/rtp-over-quic/media" 12 | "github.com/mengelbart/rtp-over-quic/quic" 13 | "github.com/mengelbart/rtp-over-quic/rtp" 14 | "github.com/mengelbart/rtp-over-quic/tcp" 15 | "github.com/mengelbart/rtp-over-quic/udp" 16 | "github.com/pion/interceptor" 17 | "github.com/spf13/cobra" 18 | ) 19 | 20 | var ( 21 | source string 22 | ccDump string 23 | rtpCC string 24 | 25 | sendStream bool 26 | localRFC8888 bool 27 | initialTargetBitrate uint 28 | ) 29 | 30 | func init() { 31 | rootCmd.AddCommand(sendCmd) 32 | 33 | sendCmd.Flags().StringVar(&source, "source", "videotestsrc", "Media source") 34 | sendCmd.Flags().StringVar(&ccDump, "cc-dump", "", "Congestion Control log file, use 'stdout' for Stdout") 35 | sendCmd.Flags().StringVar(&rtpCC, "rtp-cc", "none", "RTP congestion control algorithm. ('none', 'scream', 'gcc')") 36 | sendCmd.Flags().UintVar(&initialTargetBitrate, "target", 100_000, "Initial media target bitrate") 37 | sendCmd.Flags().BoolVar(&localRFC8888, "local-rfc8888", false, "Generate local RFC 8888 feedback") 38 | sendCmd.Flags().BoolVar(&sendStream, "stream", false, "Send random data on a stream") 39 | } 40 | 41 | var sendCmd = &cobra.Command{ 42 | Use: "send", 43 | Run: func(cmd *cobra.Command, _ []string) { 44 | sc := senderController{} 45 | if err := sc.start(cmd.Context()); err != nil { 46 | log.Fatal(err) 47 | } 48 | }, 49 | } 50 | 51 | type MediaSource interface { 52 | Play() error 53 | Stop() error 54 | SetTargetBitsPerSecond(uint) 55 | } 56 | 57 | type BandwidthEstimator interface { 58 | SetMedia(rtp.Media) 59 | } 60 | 61 | type senderController struct { 62 | bwe BandwidthEstimator 63 | } 64 | 65 | func (c *senderController) setupInterceptor(ctx context.Context) (*interceptor.Registry, error) { 66 | rtpOptions := []rtp.Option{ 67 | rtp.RegisterSenderPacketLog(rtpDumpFile, rtcpDumpFile), 68 | } 69 | 70 | if rtpCC == cc.SCReAM.String() { 71 | bwe, err := rtp.NewBandwidthEstimator(ccDump) 72 | if err != nil { 73 | return nil, err 74 | } 75 | c.bwe = bwe 76 | go func() { 77 | if err := bwe.RunSCReAM(ctx); err != nil { 78 | log.Printf("bwe.RunSCReAM returned error: %v", err) 79 | } 80 | }() 81 | rtpOptions = append(rtpOptions, rtp.RegisterSCReAM(bwe.OnNewSCReAMEstimator, int(initialTargetBitrate))) 82 | } 83 | if rtpCC == cc.GCC.String() { 84 | bwe, err := rtp.NewBandwidthEstimator(ccDump) 85 | if err != nil { 86 | return nil, err 87 | } 88 | c.bwe = bwe 89 | go func() { 90 | if err := bwe.RunGCC(ctx); err != nil { 91 | log.Printf("bwe.RunSCReAM returned error: %v", err) 92 | } 93 | }() 94 | rtpOptions = append(rtpOptions, rtp.RegisterTWCCHeaderExtension()) 95 | rtpOptions = append(rtpOptions, rtp.RegisterGCC(bwe.OnNewGCCEstimator)) 96 | } 97 | return rtp.New(rtpOptions...) 98 | } 99 | 100 | func (c *senderController) start(ctx context.Context) error { 101 | in, err := c.setupInterceptor(ctx) 102 | if err != nil { 103 | return err 104 | } 105 | senderFactory, err := transportFactory(transport) 106 | if err != nil { 107 | return err 108 | } 109 | sender, err := senderFactory(ctx, in) 110 | if err != nil { 111 | return err 112 | } 113 | return c.startMedia(sender) 114 | } 115 | 116 | func transportFactory(transport string) (func(context.Context, *interceptor.Registry) (interceptor.RTPWriter, error), error) { 117 | switch transport { 118 | case "quic", "quic-dgram", "quic-stream", "quic-prio": 119 | return startQUICSender, nil 120 | case "udp": 121 | return startUDPSender, nil 122 | case "tcp": 123 | return startTCPSender, nil 124 | } 125 | return nil, fmt.Errorf("%w: %v", errInvalidTransport, transport) 126 | } 127 | 128 | func startQUICSender(ctx context.Context, ir *interceptor.Registry) (interceptor.RTPWriter, error) { 129 | sender, err := quic.NewSender( 130 | ir, 131 | quic.SetTransportMode(quic.TransportModeFromString(transport)), 132 | quic.RemoteAddress(addr), 133 | quic.SetSenderQLOGDirName(qlogDir), 134 | quic.SetSenderSSLKeyLogFileName(keyLogFile), 135 | quic.SetSenderQUICCongestionControlAlgorithm(cc.AlgorithmFromString(quicCC)), 136 | quic.SetLocalRFC8888(localRFC8888), 137 | ) 138 | if err != nil { 139 | return nil, err 140 | } 141 | if err := sender.Connect(ctx); err != nil { 142 | return nil, err 143 | } 144 | if sendStream { 145 | ds, err := sender.NewDataStreamWithDefaultFlowID(ctx) 146 | if err != nil { 147 | return nil, err 148 | } 149 | go func() { 150 | rand.Seed(time.Now().UnixNano()) 151 | buf := make([]byte, 1200) 152 | for { 153 | _, err := rand.Read(buf) 154 | if err != nil { 155 | log.Printf("failed to read random data, exiting data stream sender: %v", err) 156 | return 157 | } 158 | _, err = ds.Write(buf) 159 | if err != nil { 160 | log.Printf("failed to send random data, exiting data stream sender: %v", err) 161 | return 162 | } 163 | } 164 | }() 165 | } 166 | return sender.NewMediaStream() 167 | } 168 | 169 | func startUDPSender(ctx context.Context, ir *interceptor.Registry) (interceptor.RTPWriter, error) { 170 | sender, err := udp.NewSender( 171 | ir, 172 | udp.RemoteAddress(addr), 173 | ) 174 | if err != nil { 175 | return nil, err 176 | } 177 | if err := sender.Connect(ctx); err != nil { 178 | return nil, err 179 | } 180 | return sender.NewMediaStream(), nil 181 | } 182 | 183 | func startTCPSender(ctx context.Context, ir *interceptor.Registry) (interceptor.RTPWriter, error) { 184 | sender, err := tcp.NewSender( 185 | ir, 186 | tcp.RemoteAddress(addr), 187 | ) 188 | if err != nil { 189 | return nil, err 190 | } 191 | if err := sender.Connect(ctx); err != nil { 192 | return nil, err 193 | } 194 | return sender.NewMediaStream(), nil 195 | } 196 | 197 | func (c *senderController) startMedia(writer interceptor.RTPWriter) error { 198 | mediaOptions := []media.ConfigOption{ 199 | media.Codec(codec), 200 | media.InitialTargetBitrate(initialTargetBitrate), 201 | } 202 | var ms MediaSource 203 | var err error 204 | switch source { 205 | case "syncodec": 206 | ms, err = media.NewSyncodecSource(writer, mediaOptions...) 207 | default: 208 | ms, err = media.NewGstreamerSource(writer, source, transport != "quic-prio", mediaOptions...) 209 | } 210 | if err != nil { 211 | return err 212 | } 213 | if c.bwe != nil { 214 | c.bwe.SetMedia(ms) 215 | } 216 | return ms.Play() 217 | } 218 | -------------------------------------------------------------------------------- /quic/receiver.go: -------------------------------------------------------------------------------- 1 | package quic 2 | 3 | import ( 4 | "bytes" 5 | "context" 6 | "errors" 7 | "io" 8 | "log" 9 | "net" 10 | "sync" 11 | 12 | "github.com/lucas-clemente/quic-go" 13 | "github.com/lucas-clemente/quic-go/quicvarint" 14 | "github.com/mengelbart/rtp-over-quic/cc" 15 | "github.com/pion/interceptor" 16 | "github.com/pion/rtcp" 17 | ) 18 | 19 | type ServerOption func(*ServerConfig) error 20 | 21 | func LocalAddress(addr string) ServerOption { 22 | return func(sc *ServerConfig) error { 23 | sc.localAddr = addr 24 | return nil 25 | } 26 | } 27 | 28 | func SetServerQLOGDirName(dir string) ServerOption { 29 | return func(sc *ServerConfig) error { 30 | sc.qlogDirectoryName = dir 31 | return nil 32 | } 33 | } 34 | 35 | func SetServerSSLKeyLogFileName(file string) ServerOption { 36 | return func(sc *ServerConfig) error { 37 | sc.sslKeyLogFileName = file 38 | return nil 39 | } 40 | } 41 | 42 | func SetServerQUICCongestionControlAlgorithm(algorithm cc.Algorithm) ServerOption { 43 | return func(sc *ServerConfig) error { 44 | sc.cc = algorithm 45 | return nil 46 | } 47 | } 48 | 49 | type ServerConfig struct { 50 | localAddr string 51 | cc cc.Algorithm 52 | qlogDirectoryName string 53 | sslKeyLogFileName string 54 | } 55 | 56 | type Server struct { 57 | *ServerConfig 58 | onNewHandler func(*Handler) 59 | } 60 | 61 | func NewServer(opts ...ServerOption) (*Server, error) { 62 | s := &Server{ 63 | ServerConfig: &ServerConfig{ 64 | localAddr: "", 65 | cc: 0, 66 | qlogDirectoryName: "", 67 | sslKeyLogFileName: "", 68 | }, 69 | } 70 | for _, opt := range opts { 71 | if err := opt(s.ServerConfig); err != nil { 72 | return nil, err 73 | } 74 | } 75 | return s, nil 76 | } 77 | 78 | func (s *Server) Start(ctx context.Context) error { 79 | listener, err := listen(s.localAddr, s.cc, s.qlogDirectoryName, s.sslKeyLogFileName) 80 | if err != nil { 81 | return err 82 | } 83 | var wg sync.WaitGroup 84 | defer wg.Wait() 85 | 86 | for { 87 | conn, err := listener.Accept(ctx) 88 | if err != nil { 89 | if err == context.Canceled { 90 | return nil 91 | } 92 | return err 93 | } 94 | wg.Add(1) 95 | go func() { 96 | defer wg.Done() 97 | h := Handler{ 98 | reader: nil, 99 | conn: conn, 100 | } 101 | s.onNewHandler(&h) 102 | if err = h.handle(ctx, conn); err != nil { 103 | log.Printf("error on handling connection: %v", err) 104 | } 105 | }() 106 | } 107 | } 108 | 109 | func (s *Server) OnNewHandler(f func(*Handler)) { 110 | s.onNewHandler = f 111 | } 112 | 113 | type pkt struct { 114 | flowID uint64 115 | transport TransportMode 116 | buffer []byte 117 | } 118 | 119 | type Handler struct { 120 | reader interceptor.RTPReader 121 | conn quic.Connection 122 | } 123 | 124 | func (h *Handler) SetRTPReader(r interceptor.RTPReader) { 125 | h.reader = r 126 | } 127 | 128 | func (h *Handler) handle(ctx context.Context, conn quic.Connection) error { 129 | pktChan := make(chan pkt) 130 | 131 | var wg sync.WaitGroup 132 | defer wg.Wait() 133 | 134 | go h.receiveDgrams(pktChan) 135 | go h.acceptStreams(ctx, pktChan) 136 | 137 | for { 138 | select { 139 | case p := <-pktChan: 140 | if h.reader != nil { 141 | if _, _, err := h.reader.Read(p.buffer, interceptor.Attributes{ 142 | "flow-id": p.flowID, 143 | "transport": p.transport, 144 | }); err != nil { 145 | log.Printf("failed to process incoming packet: %v", err) 146 | } 147 | } 148 | 149 | case <-ctx.Done(): 150 | return nil 151 | } 152 | } 153 | } 154 | 155 | func (h *Handler) receiveDgrams(pktChan chan<- pkt) { 156 | for { 157 | msg, err := h.conn.ReceiveMessage() 158 | if err != nil { 159 | if e, ok := err.(*quic.ApplicationError); ok && e.ErrorCode == 0 { 160 | log.Printf("QUIC received application error, exiting datagram receiver routine: %v", err) 161 | return 162 | } 163 | if ne, ok := err.(net.Error); ok && ne.Timeout() { 164 | log.Printf("QUIC connection timed out, exiting datagram receiver routine: %v", err) 165 | return 166 | } 167 | log.Printf("failed to receive QUIC datagram: %T", err) 168 | continue 169 | } 170 | id, err := quicvarint.Read(bytes.NewReader(msg)) 171 | if err != nil { 172 | log.Printf("failed to read flow ID: %v, dropping datagram", err) 173 | continue 174 | } 175 | offset := quicvarint.Len(id) 176 | pktChan <- pkt{ 177 | flowID: id, 178 | transport: DGRAM, 179 | buffer: msg[offset:], 180 | } 181 | 182 | } 183 | } 184 | 185 | func (h *Handler) acceptStreams(ctx context.Context, pktChan chan<- pkt) { 186 | for { 187 | stream, err := h.conn.AcceptUniStream(ctx) 188 | if err != nil { 189 | if e, ok := err.(*quic.ApplicationError); ok && e.ErrorCode == 0 { 190 | log.Printf("QUIC received application error, exiting stream receiver routine: %v", err) 191 | return 192 | } 193 | if ne, ok := err.(net.Error); ok && ne.Timeout() { 194 | log.Printf("QUIC connection timed out, exiting stream accepting routine: %v", err) 195 | return 196 | } 197 | log.Printf("failed to receive from QUIC stream: %v", err) 198 | continue 199 | } 200 | go h.readStream(stream, pktChan) 201 | } 202 | } 203 | 204 | func (h *Handler) readStream(stream quic.ReceiveStream, pktChan chan<- pkt) { 205 | varintReader := quicvarint.NewReader(stream) 206 | id, err := quicvarint.Read(varintReader) 207 | if err != nil { 208 | log.Printf("failed to read flow ID: %v, dropping stream", err) 209 | return 210 | } 211 | buf, err := io.ReadAll(stream) 212 | if err != nil { 213 | if e, ok := err.(*quic.ApplicationError); ok && e.ErrorCode == 0 { 214 | log.Printf("QUIC received application error, exiting stream receiver routine: %v", err) 215 | return 216 | } 217 | if ne, ok := err.(net.Error); ok && ne.Timeout() { 218 | log.Printf("QUIC connection timed out, exiting stream reader routine: %v", err) 219 | return 220 | } 221 | if errors.Is(err, io.EOF) { 222 | return 223 | } 224 | log.Printf("failed to receive from QUIC stream: %v", err) 225 | return 226 | } 227 | pktChan <- pkt{ 228 | flowID: id, 229 | transport: STREAM, 230 | buffer: buf, 231 | } 232 | } 233 | 234 | func (h *Handler) WriteRTCP(pkts []rtcp.Packet, attributes interceptor.Attributes) (int, error) { 235 | buf, err := rtcp.Marshal(pkts) 236 | if err != nil { 237 | return 0, err 238 | } 239 | var id uint64 240 | if i := attributes.Get("flow-id"); i != nil { 241 | id = i.(uint64) 242 | } 243 | var idBuf bytes.Buffer 244 | idWriter := quicvarint.NewWriter(&idBuf) 245 | quicvarint.Write(idWriter, id) 246 | msg := append(idBuf.Bytes(), buf...) 247 | return len(buf), h.conn.SendMessage(msg, nil) 248 | } 249 | -------------------------------------------------------------------------------- /scream/receiver_interceptor.go: -------------------------------------------------------------------------------- 1 | package scream 2 | 3 | import ( 4 | "sync" 5 | "time" 6 | 7 | "github.com/mengelbart/scream-go" 8 | "github.com/pion/interceptor" 9 | "github.com/pion/logging" 10 | "github.com/pion/rtcp" 11 | "github.com/pion/rtp" 12 | ) 13 | 14 | // ReceiverInterceptorFactory is a interceptor.Factory for a scream receiver 15 | // interceptor 16 | type ReceiverInterceptorFactory struct { 17 | opts []ReceiverOption 18 | } 19 | 20 | // NewInterceptor constructs a new SCReAM receiver interceptor 21 | func (f *ReceiverInterceptorFactory) NewInterceptor(id string) (interceptor.Interceptor, error) { 22 | r := &ReceiverInterceptor{ 23 | interval: time.Millisecond * 10, 24 | close: make(chan struct{}), 25 | log: logging.NewDefaultLoggerFactory().NewLogger("scream_receiver"), 26 | screamRx: map[uint32]*scream.Rx{}, 27 | receive: make(chan *packet), 28 | mark: false, 29 | } 30 | for _, opt := range f.opts { 31 | if err := opt(r); err != nil { 32 | return nil, err 33 | } 34 | } 35 | return r, nil 36 | } 37 | 38 | // NewReceiverInterceptor returns a new ReceiverInterceptor 39 | func NewReceiverInterceptor(opts ...ReceiverOption) (*ReceiverInterceptorFactory, error) { 40 | return &ReceiverInterceptorFactory{opts}, nil 41 | } 42 | 43 | type packet struct { 44 | rtp *rtp.Packet 45 | timestamp time.Time 46 | attributes interceptor.Attributes 47 | } 48 | 49 | // ReceiverInterceptor generates Feedback for SCReAM congestion control 50 | type ReceiverInterceptor struct { 51 | interceptor.NoOp 52 | m sync.Mutex 53 | wg sync.WaitGroup 54 | close chan struct{} 55 | log logging.LeveledLogger 56 | 57 | screamRx map[uint32]*scream.Rx 58 | screamRxMu sync.Mutex 59 | interval time.Duration 60 | receive chan *packet 61 | 62 | mark bool // only for debugging purpose, setting this triggers a bug in some version s of the SCReAM receiver 63 | } 64 | 65 | func (r *ReceiverInterceptor) getTimeNTP(t time.Time) uint64 { 66 | return uint64(ntpTime32(t)) 67 | } 68 | 69 | // BindRTCPWriter lets you modify any outgoing RTCP packets. It is called once per PeerConnection. The returned method 70 | // will be called once per packet batch. 71 | func (r *ReceiverInterceptor) BindRTCPWriter(writer interceptor.RTCPWriter) interceptor.RTCPWriter { 72 | r.m.Lock() 73 | defer r.m.Unlock() 74 | 75 | if r.isClosed() { 76 | return writer 77 | } 78 | 79 | r.wg.Add(1) 80 | 81 | go r.loop(writer) 82 | 83 | return writer 84 | } 85 | 86 | // BindRemoteStream lets you modify any incoming RTP packets. It is called once for per RemoteStream. The returned method 87 | // will be called once per rtp packet. 88 | func (r *ReceiverInterceptor) BindRemoteStream(info *interceptor.StreamInfo, reader interceptor.RTPReader) interceptor.RTPReader { 89 | if !streamSupportSCReAM(info) { 90 | return reader 91 | } 92 | 93 | rx := scream.NewRx(info.SSRC) 94 | r.screamRxMu.Lock() 95 | r.screamRx[info.SSRC] = rx 96 | r.screamRxMu.Unlock() 97 | 98 | return interceptor.RTPReaderFunc(func(b []byte, a interceptor.Attributes) (int, interceptor.Attributes, error) { 99 | timestamp := time.Now() 100 | if ts, ok := a["timestamp"]; ok { 101 | if t, ok := ts.(time.Time); ok { 102 | timestamp = t 103 | } 104 | } 105 | i, attr, err := reader.Read(b, a) 106 | if err != nil { 107 | return 0, nil, err 108 | } 109 | buf := make([]byte, i) 110 | copy(buf, b) 111 | pkt := rtp.Packet{} 112 | if err = pkt.Unmarshal(buf); err != nil { 113 | return 0, nil, err 114 | } 115 | 116 | r.receive <- &packet{ 117 | rtp: &pkt, 118 | timestamp: timestamp, 119 | } 120 | 121 | return i, attr, nil 122 | }) 123 | } 124 | 125 | // UnbindRemoteStream is called when the Stream is removed. It can be used to clean up any data related to that track. 126 | func (r *ReceiverInterceptor) UnbindRemoteStream(info *interceptor.StreamInfo) { 127 | r.screamRxMu.Lock() 128 | delete(r.screamRx, info.SSRC) 129 | r.screamRxMu.Unlock() 130 | } 131 | 132 | // Close closes the interceptor. 133 | func (r *ReceiverInterceptor) Close() error { 134 | defer r.wg.Wait() 135 | r.m.Lock() 136 | defer r.m.Unlock() 137 | 138 | if !r.isClosed() { 139 | close(r.close) 140 | } 141 | return nil 142 | } 143 | 144 | func (r *ReceiverInterceptor) loopFeedbackSender(rtcpWriter interceptor.RTCPWriter) { 145 | defer r.wg.Done() 146 | ticker := time.NewTicker(r.interval) 147 | defer ticker.Stop() 148 | 149 | for { 150 | select { 151 | case now := <-ticker.C: 152 | r.screamRxMu.Lock() 153 | for _, rx := range r.screamRx { 154 | t := r.getTimeNTP(now) 155 | if ok, feedback := rx.CreateStandardizedFeedback(t, true); ok { 156 | var fb rtcp.CCFeedbackReport 157 | if err := fb.Unmarshal(feedback); err != nil { 158 | r.log.Warnf("failed to unmarshal scream feedback report: %+v", err) 159 | } 160 | if _, err := rtcpWriter.Write([]rtcp.Packet{&fb}, interceptor.Attributes{}); err != nil { 161 | r.log.Warnf("failed sending scream feedback report: %+v", err) 162 | } 163 | } 164 | } 165 | r.screamRxMu.Unlock() 166 | case <-r.close: 167 | return 168 | } 169 | } 170 | } 171 | 172 | func (r *ReceiverInterceptor) loop(rtcpWriter interceptor.RTCPWriter) { 173 | defer r.wg.Done() 174 | 175 | select { 176 | case <-r.close: 177 | return 178 | case pkt := <-r.receive: 179 | t := r.getTimeNTP(pkt.timestamp) 180 | 181 | r.screamRxMu.Lock() 182 | if rx, ok := r.screamRx[pkt.rtp.SSRC]; ok { 183 | //fmt.Printf("receive pkt %v at t=%v\n", pkt.SequenceNumber, t) 184 | rx.Receive(t, pkt.rtp.SSRC, pkt.rtp.MarshalSize(), pkt.rtp.SequenceNumber, 0) 185 | } 186 | r.screamRxMu.Unlock() 187 | } 188 | 189 | r.wg.Add(1) 190 | go r.loopFeedbackSender(rtcpWriter) 191 | 192 | lastFeedback := time.Now() 193 | for { 194 | select { 195 | case pkt := <-r.receive: 196 | t := r.getTimeNTP(pkt.timestamp) 197 | 198 | r.screamRxMu.Lock() 199 | if rx, ok := r.screamRx[pkt.rtp.SSRC]; ok { 200 | //fmt.Printf("receive pkt %v at t=%v\n", pkt.SequenceNumber, t) 201 | rx.Receive(t, pkt.rtp.SSRC, pkt.rtp.MarshalSize(), pkt.rtp.SequenceNumber, 0) 202 | } 203 | r.screamRxMu.Unlock() 204 | 205 | now := time.Now() 206 | if now.Sub(lastFeedback) > r.interval { 207 | r.screamRxMu.Lock() 208 | for _, rx := range r.screamRx { 209 | t := r.getTimeNTP(now) 210 | if ok, feedback := rx.CreateStandardizedFeedback(t, pkt.rtp.Marker); ok { 211 | var fb rtcp.CCFeedbackReport 212 | if err := fb.Unmarshal(feedback); err != nil { 213 | r.log.Warnf("failed to unmarshal scream feedback report: %+v", err) 214 | } 215 | if _, err := rtcpWriter.Write([]rtcp.Packet{&fb}, interceptor.Attributes{}); err != nil { 216 | r.log.Warnf("failed sending scream feedback report: %+v", err) 217 | } 218 | } 219 | } 220 | r.screamRxMu.Unlock() 221 | lastFeedback = now 222 | } 223 | 224 | case <-r.close: 225 | return 226 | } 227 | } 228 | } 229 | 230 | func (r *ReceiverInterceptor) isClosed() bool { 231 | select { 232 | case <-r.close: 233 | return true 234 | default: 235 | return false 236 | } 237 | } 238 | -------------------------------------------------------------------------------- /quic/sender.go: -------------------------------------------------------------------------------- 1 | package quic 2 | 3 | import ( 4 | "bytes" 5 | "context" 6 | "crypto/tls" 7 | "errors" 8 | "io" 9 | "log" 10 | "math" 11 | "net" 12 | "time" 13 | 14 | "github.com/lucas-clemente/quic-go" 15 | quiclogging "github.com/lucas-clemente/quic-go/logging" 16 | "github.com/lucas-clemente/quic-go/quicvarint" 17 | "github.com/mengelbart/rtp-over-quic/cc" 18 | "github.com/mengelbart/rtp-over-quic/logging" 19 | "github.com/mengelbart/rtp-over-quic/rtp" 20 | "github.com/pion/interceptor" 21 | pionrtp "github.com/pion/rtp" 22 | ) 23 | 24 | const rtpOverQUICALPN = "rtp-mux-quic" 25 | 26 | type SenderOption func(*SenderConfig) error 27 | 28 | func RemoteAddress(addr string) SenderOption { 29 | return func(sc *SenderConfig) error { 30 | sc.remoteAddr = addr 31 | return nil 32 | } 33 | } 34 | 35 | func SetSenderQLOGDirName(dir string) SenderOption { 36 | return func(sc *SenderConfig) error { 37 | sc.qlogDirectoryName = dir 38 | return nil 39 | } 40 | } 41 | 42 | func SetSenderSSLKeyLogFileName(file string) SenderOption { 43 | return func(sc *SenderConfig) error { 44 | sc.sslKeyLogFileName = file 45 | return nil 46 | } 47 | } 48 | 49 | func SetSenderQUICCongestionControlAlgorithm(algorithm cc.Algorithm) SenderOption { 50 | return func(sc *SenderConfig) error { 51 | sc.cc = algorithm 52 | return nil 53 | } 54 | } 55 | 56 | func SetLocalRFC8888(enabled bool) SenderOption { 57 | return func(sc *SenderConfig) error { 58 | sc.localRFC8888 = enabled 59 | return nil 60 | } 61 | } 62 | 63 | func SetTransportMode(mode TransportMode) SenderOption { 64 | return func(sc *SenderConfig) error { 65 | sc.transportMode = mode 66 | return nil 67 | } 68 | } 69 | 70 | type SenderConfig struct { 71 | remoteAddr string 72 | qlogDirectoryName string 73 | sslKeyLogFileName string 74 | 75 | cc cc.Algorithm 76 | localRFC8888 bool 77 | maxMTU uint 78 | transportMode TransportMode 79 | } 80 | 81 | type Sender struct { 82 | *SenderConfig 83 | 84 | conn quic.Connection 85 | metricsTracer *RTTTracer 86 | interceptorRegistry *interceptor.Registry 87 | interceptor interceptor.Interceptor 88 | localFeedback *localRFC8888Generator 89 | 90 | flowIDs map[uint64]struct{} 91 | } 92 | 93 | func NewSender(r *interceptor.Registry, opts ...SenderOption) (*Sender, error) { 94 | s := &Sender{ 95 | SenderConfig: &SenderConfig{ 96 | remoteAddr: ":4242", 97 | qlogDirectoryName: "", 98 | sslKeyLogFileName: "", 99 | cc: cc.Reno, 100 | localRFC8888: false, 101 | maxMTU: 1300, 102 | transportMode: ANY, 103 | }, 104 | conn: nil, 105 | metricsTracer: nil, 106 | interceptorRegistry: r, 107 | localFeedback: nil, 108 | flowIDs: make(map[uint64]struct{}), 109 | } 110 | for _, opt := range opts { 111 | if err := opt(s.SenderConfig); err != nil { 112 | return nil, err 113 | } 114 | } 115 | return s, nil 116 | } 117 | 118 | func (s *Sender) newFlowID() (uint64, error) { 119 | for i := uint64(0); i < math.MaxUint64; i++ { 120 | if _, ok := s.flowIDs[i]; !ok { 121 | s.flowIDs[i] = struct{}{} 122 | return i, nil 123 | } 124 | } 125 | return 0, errors.New("too many flows, no unused IDs left") 126 | } 127 | 128 | func (s *Sender) Connect(ctx context.Context) error { 129 | qlogWriter, err := logging.GetQLOGTracer(s.qlogDirectoryName) 130 | if err != nil { 131 | return err 132 | } 133 | keyLogger, err := logging.GetKeyLogger(s.sslKeyLogFileName) 134 | if err != nil { 135 | return err 136 | } 137 | tlsConf := &tls.Config{ 138 | KeyLogWriter: keyLogger, 139 | InsecureSkipVerify: true, 140 | NextProtos: []string{rtpOverQUICALPN}, 141 | } 142 | s.metricsTracer = NewTracer() 143 | tracers := []quiclogging.Tracer{s.metricsTracer} 144 | if qlogWriter != nil { 145 | tracers = append(tracers, qlogWriter) 146 | } 147 | tracer := quiclogging.NewMultiplexedTracer(tracers...) 148 | quicConf := &quic.Config{ 149 | EnableDatagrams: true, 150 | HandshakeIdleTimeout: 15 * time.Second, 151 | Tracer: tracer, 152 | DisableCC: s.cc != cc.Reno, 153 | MaxIncomingStreams: 1 << 60, 154 | MaxIncomingUniStreams: 1 << 60, 155 | } 156 | conn, err := quic.DialAddrContext(ctx, s.remoteAddr, tlsConf, quicConf) 157 | if err != nil { 158 | return err 159 | } 160 | s.conn = conn 161 | 162 | i, err := s.interceptorRegistry.Build("") 163 | if err != nil { 164 | return err 165 | } 166 | s.interceptor = i 167 | 168 | rtcpReader := s.interceptor.BindRTCPReader(interceptor.RTCPReaderFunc( 169 | func(b []byte, a interceptor.Attributes) (int, interceptor.Attributes, error) { 170 | return len(b), a, nil 171 | }), 172 | ) 173 | 174 | rtcpChan := make(chan rtp.RTCPFeedback) 175 | go rtp.ReadRTCP(ctx, rtcpReader, rtcpChan) 176 | go s.readFromNetwork(ctx, rtcpChan) 177 | 178 | if s.localRFC8888 { 179 | s.localFeedback = newLocalRFC8888Generator(0, s.metricsTracer, func(r rtp.RTCPFeedback) { 180 | rtcpChan <- r 181 | }) 182 | go s.localFeedback.run(ctx) 183 | } 184 | 185 | return nil 186 | } 187 | 188 | func (s *Sender) readFromNetwork(ctx context.Context, rtcpChan chan rtp.RTCPFeedback) { 189 | for { 190 | buf, err := s.conn.ReceiveMessage() 191 | if err != nil { 192 | if e, ok := err.(*quic.ApplicationError); ok && e.ErrorCode == 0 { 193 | log.Printf("QUIC received application error, exiting reader routine: %v", err) 194 | return 195 | } 196 | if ne, ok := err.(net.Error); ok && ne.Timeout() { 197 | log.Printf("QUIC connection timed out, exiting datagram receiver routine: %v", err) 198 | return 199 | } 200 | log.Printf("failed to receive QUIC datagram: %v", err) 201 | continue 202 | } 203 | // TODO: If multiple RTCP flows are required, demultiplex on id here 204 | id, err := quicvarint.Read(bytes.NewReader(buf)) 205 | if err != nil { 206 | log.Printf("failed to read flow ID: %v, dropping datagram", err) 207 | continue 208 | } 209 | rtcpChan <- rtp.RTCPFeedback{ 210 | Buffer: buf[quicvarint.Len(id):], 211 | Attributes: nil, 212 | } 213 | } 214 | } 215 | 216 | func (s *Sender) writeDgram(buf []byte, cb func(bool)) (int, error) { 217 | return len(buf), s.conn.SendMessage(buf, cb) 218 | } 219 | 220 | func (s *Sender) writeStream(buf []byte) (int, error) { 221 | stream, err := s.conn.OpenUniStreamSync(context.Background()) 222 | if err != nil { 223 | return 0, err 224 | } 225 | defer stream.Close() 226 | return stream.Write(buf) 227 | } 228 | 229 | func (s *Sender) NewMediaStreamWithFlowID(id uint64) interceptor.RTPWriter { 230 | var idBuffer bytes.Buffer 231 | idWriter := quicvarint.NewWriter(&idBuffer) 232 | quicvarint.Write(idWriter, id) 233 | idBytes := idBuffer.Bytes() 234 | return s.interceptor.BindLocalStream(&interceptor.StreamInfo{}, interceptor.RTPWriterFunc( 235 | func(header *pionrtp.Header, payload []byte, attributes interceptor.Attributes) (int, error) { 236 | headerBuf, err := header.Marshal() 237 | if err != nil { 238 | return 0, err 239 | } 240 | pl := append(idBytes, headerBuf...) 241 | pl = append(pl, payload...) 242 | 243 | if s.transportMode == DGRAM { 244 | // log.Printf("send dgram with ACK callback due to DGRAM transportMode") 245 | return s.writeDgram(pl, s.ackCallback(time.Now(), header.SSRC, header.MarshalSize()+len(pl), header.SequenceNumber)) 246 | } 247 | 248 | if s.transportMode == STREAM { 249 | // log.Printf("send stream due to STREAM transportMode") 250 | return s.writeStream(pl) 251 | } 252 | 253 | mtu := uint(len(pl)) 254 | if mtu > s.maxMTU { 255 | if s.localRFC8888 { 256 | log.Println("WARNING: Sending on stream due to too large MTU, but local CC FB (RFC8888) generation was requested, which is currently not implemented for QUIC streams") 257 | } 258 | // log.Printf("send stream due to mtu>s.maxMTU") 259 | return s.writeStream(pl) 260 | } 261 | 262 | if attributes == nil { 263 | // log.Printf("send dgram with ACK callback due to nil attributes") 264 | return s.writeDgram(pl, s.ackCallback(time.Now(), header.SSRC, header.MarshalSize()+len(pl), header.SequenceNumber)) 265 | } 266 | 267 | reliability := attributes.Get(rtp.RELIABILITY) 268 | if reliability != nil && reliability.(rtp.Reliability) == rtp.REQUIRED { 269 | // log.Printf("send stream due reliability == REQUIRED") 270 | return s.writeStream(pl) 271 | } 272 | // log.Printf("send dgram due reliability != REQUIRED") 273 | return s.writeDgram(pl, s.ackCallback(time.Now(), header.SSRC, header.MarshalSize()+len(pl), header.SequenceNumber)) 274 | }, 275 | )) 276 | } 277 | 278 | func (s *Sender) NewMediaStream() (interceptor.RTPWriter, error) { 279 | id, err := s.newFlowID() 280 | if err != nil { 281 | return nil, err 282 | } 283 | return s.NewMediaStreamWithFlowID(id), nil 284 | } 285 | 286 | func (s *Sender) ackCallback(sent time.Time, ssrc uint32, size int, seqNr uint16) func(bool) { 287 | if s.localRFC8888 { 288 | return func(b bool) { 289 | if b { 290 | s.localFeedback.ack(ackedPkt{ 291 | sentTS: sent, 292 | ssrc: ssrc, 293 | size: size, 294 | seqNr: seqNr, 295 | }) 296 | } 297 | } 298 | } 299 | return nil 300 | } 301 | 302 | type DataStreamWriter struct { 303 | io.Writer 304 | } 305 | 306 | func (s *Sender) NewDataStreamWithFlowID(ctx context.Context, id uint64) (io.Writer, error) { 307 | stream, err := s.conn.OpenUniStreamSync(ctx) 308 | if err != nil { 309 | return nil, err 310 | } 311 | var idBuffer bytes.Buffer 312 | idWriter := quicvarint.NewWriter(&idBuffer) 313 | quicvarint.Write(idWriter, id) 314 | idBytes := idBuffer.Bytes() 315 | _, err = stream.Write(idBytes) 316 | if err != nil { 317 | return nil, err 318 | } 319 | return &DataStreamWriter{ 320 | Writer: stream, 321 | }, nil 322 | } 323 | 324 | func (s *Sender) NewDataStreamWithoutFlowID(ctx context.Context) (io.Writer, error) { 325 | stream, err := s.conn.OpenUniStreamSync(ctx) 326 | if err != nil { 327 | return nil, err 328 | } 329 | return &DataStreamWriter{ 330 | Writer: stream, 331 | }, nil 332 | } 333 | 334 | func (s *Sender) NewDataStreamWithDefaultFlowID(ctx context.Context) (io.Writer, error) { 335 | id, err := s.newFlowID() 336 | if err != nil { 337 | return nil, err 338 | } 339 | return s.NewDataStreamWithFlowID(ctx, id) 340 | } 341 | -------------------------------------------------------------------------------- /media/gstreamer.go: -------------------------------------------------------------------------------- 1 | package media 2 | 3 | import ( 4 | "fmt" 5 | "io" 6 | "log" 7 | "math" 8 | "time" 9 | 10 | "github.com/mengelbart/gst-go/gstreamer" 11 | "github.com/mengelbart/rtp-over-quic/rtp" 12 | "github.com/pion/interceptor" 13 | pionrtp "github.com/pion/rtp" 14 | "github.com/pion/webrtc/v3/pkg/media/h264reader" 15 | ) 16 | 17 | type mtuGetter interface { 18 | getMTU(gstreamer.Buffer) uint 19 | } 20 | 21 | // TODO: If usefule, make this configurable? 22 | const teeLiveVideo = false // if set, displays source video in autovideosink 23 | 24 | type GstreamerSource struct { 25 | Config 26 | src string 27 | pipeline *gstreamer.Pipeline 28 | rtpWriter interceptor.RTPWriter 29 | useGstPacketizer bool 30 | close chan struct{} 31 | } 32 | 33 | func NewGstreamerSource(rtpWriter interceptor.RTPWriter, src string, useGstPacketizer bool, opts ...ConfigOption) (*GstreamerSource, error) { 34 | if len(src) == 0 { 35 | return nil, fmt.Errorf("invalid source string: %v, use 'videotestsrc' or a valid filename instead", src) 36 | } 37 | 38 | c, err := newConfig(opts...) 39 | if err != nil { 40 | return nil, err 41 | } 42 | builder := gstreamer.Elements{} 43 | 44 | if src == "videotestsrc" { 45 | builder = append(builder, 46 | gstreamer.NewElement("videotestsrc"), 47 | ) 48 | } else { 49 | builder = append(builder, 50 | gstreamer.NewElement("filesrc", gstreamer.Set("location", src)), 51 | gstreamer.NewElement("decodebin"), 52 | ) 53 | } 54 | builder = append(builder, 55 | gstreamer.NewElement("clocksync"), 56 | ) 57 | 58 | if teeLiveVideo { 59 | builder = append(builder, 60 | gstreamer.NewElement("tee", gstreamer.Set("name", "t")), 61 | gstreamer.NewElement("queue"), 62 | gstreamer.NewElement("autovideosink t."), 63 | gstreamer.NewElement("queue"), 64 | ) 65 | } 66 | 67 | payloaderSettings := []gstreamer.ElementOption{ 68 | gstreamer.Set("name", "payloader"), 69 | gstreamer.Set("mtu", c.mtu), 70 | gstreamer.Set("seqnum-offset", 0), 71 | gstreamer.Set("ssrc", c.ssrc), 72 | } 73 | // TODO: Set encoder options including init target bitrate 74 | switch c.codec { 75 | case "vp8", "vp9": 76 | builder = append(builder, gstreamer.NewElement(fmt.Sprintf("%venc", c.codec), 77 | gstreamer.Set("name", "encoder"), 78 | gstreamer.Set("error-resilient", "default"), 79 | gstreamer.Set("cpu-used", 4), 80 | gstreamer.Set("deadline", 1), 81 | gstreamer.Set("target-bitrate", c.targetBitrate), 82 | )) 83 | if useGstPacketizer { 84 | builder = append(builder, gstreamer.NewElement(fmt.Sprintf("rtp%vpay", c.codec), payloaderSettings...)) 85 | } 86 | case "h264": 87 | builder = append(builder, gstreamer.NewElement("x264enc", 88 | gstreamer.Set("name", "encoder"), 89 | gstreamer.Set("pass", 5), 90 | gstreamer.Set("speed-preset", 4), 91 | gstreamer.Set("tune", 4), 92 | gstreamer.Set("bitrate", c.targetBitrate/1000), 93 | // gstreamer.Set("key-int-max", 10), 94 | )) 95 | if useGstPacketizer { 96 | builder = append(builder, gstreamer.NewElement("rtph264pay", payloaderSettings...)) 97 | } 98 | case "h265": 99 | builder = append(builder, gstreamer.NewElement("x265enc")) 100 | if useGstPacketizer { 101 | builder = append(builder, gstreamer.NewElement("rtph265pay", payloaderSettings...)) 102 | } 103 | case "av1": 104 | panic("rtpav1pay is not yet implemented in Gstreamer") 105 | //builder = append(builder, gstreamer.NewElement("av1enc")) 106 | //if useGstPacketizer { 107 | //builder = append(builder, gstreamer.NewElement("rtpav1pay", payloaderSettings...)) 108 | //} 109 | } 110 | 111 | builder = append(builder, 112 | gstreamer.NewElement("appsink", gstreamer.Set("name", "appsink")), 113 | ) 114 | pipelineStr := builder.Build() 115 | log.Printf("src pipeline: %v", pipelineStr) 116 | 117 | pipeline, err := gstreamer.NewPipeline(pipelineStr) 118 | if err != nil { 119 | return nil, err 120 | } 121 | s := &GstreamerSource{ 122 | Config: *c, 123 | src: src, 124 | pipeline: pipeline, 125 | rtpWriter: rtpWriter, 126 | useGstPacketizer: useGstPacketizer, 127 | close: make(chan struct{}), 128 | } 129 | return s, nil 130 | } 131 | 132 | func (s *GstreamerSource) Play() error { 133 | bufferCh := make(chan gstreamer.Buffer) 134 | s.pipeline.SetBufferHandler(func(b gstreamer.Buffer) { 135 | bufferCh <- b 136 | }) 137 | s.pipeline.SetEOSHandler(func() { 138 | close(bufferCh) 139 | }) 140 | s.pipeline.SetErrorHandler(func(err error) { 141 | panic(fmt.Errorf("ERROR: %w", err)) 142 | // TODO 143 | }) 144 | 145 | var packetizer pionrtp.Packetizer 146 | if !s.useGstPacketizer { 147 | payloader, err := payloaderForCodec(s.codec) 148 | if err != nil { 149 | return err 150 | } 151 | packetizer = pionrtp.NewPacketizer(s.payloadType, s.ssrc, payloader, pionrtp.NewFixedSequencer(0), 90_000) 152 | } 153 | 154 | go s.pipeline.Start() 155 | for { 156 | select { 157 | case <-s.close: 158 | return nil 159 | case buffer, ok := <-bufferCh: 160 | if !ok { 161 | return nil 162 | } 163 | if !s.useGstPacketizer { 164 | samples := uint32((time.Duration(buffer.Duration).Seconds()) * float64(s.clockRate)) 165 | 166 | attributes := interceptor.Attributes{ 167 | rtp.RELIABILITY: rtp.NOT_REQUIRED, 168 | } 169 | mtu := s.mtu 170 | if isKeyFrame(s.codec, buffer.Bytes) { 171 | attributes.Set(rtp.RELIABILITY, rtp.REQUIRED) 172 | mtu = math.MaxUint16 173 | } 174 | 175 | pkts := packetizer.Packetize(mtu, buffer.Bytes, samples) 176 | for _, pkt := range pkts { 177 | _, err := s.rtpWriter.Write(&pkt.Header, pkt.Payload, attributes) 178 | if err != nil { 179 | log.Printf("rtpWriter.Write error: %v", err) 180 | return err 181 | } 182 | } 183 | } else { 184 | var pkt pionrtp.Packet 185 | err := pkt.Unmarshal(buffer.Bytes) 186 | if err != nil { 187 | return err 188 | } 189 | _, err = s.rtpWriter.Write(&pkt.Header, pkt.Payload, nil) 190 | if err != nil { 191 | log.Printf("rtpWriter.Write error: %v", err) 192 | return err 193 | } 194 | } 195 | } 196 | } 197 | } 198 | 199 | func isKeyFrame(codec string, buffer []byte) bool { 200 | switch codec { 201 | case "vp8": 202 | return buffer[0]&0x1 == 0 203 | case "h264": 204 | r, w := io.Pipe() 205 | hr, err := h264reader.NewReader(r) 206 | if err != nil { 207 | panic(err) 208 | } 209 | go func() { 210 | _, verr := w.Write(buffer) 211 | if verr != nil { 212 | panic(verr) 213 | } 214 | r.Close() 215 | }() 216 | hasIDR := false 217 | nal, err := hr.NextNAL() 218 | for nal != nil && err != io.EOF { 219 | if err != nil { 220 | panic(err) 221 | } 222 | nal, err = hr.NextNAL() 223 | if nal != nil { 224 | if nal.UnitType == h264reader.NalUnitTypeCodedSliceIdr { 225 | hasIDR = true 226 | } 227 | } 228 | } 229 | 230 | return hasIDR 231 | } 232 | return false 233 | } 234 | 235 | func (s *GstreamerSource) Stop() error { 236 | close(s.close) 237 | return s.pipeline.Close() 238 | } 239 | 240 | func (s *GstreamerSource) SetTargetBitsPerSecond(bitrate uint) { 241 | value := bitrate 242 | prop := "bitrate" 243 | switch s.codec { 244 | case "vp8", "vp9": 245 | prop = "target-bitrate" 246 | case "h264": 247 | value = value / 1000 248 | } 249 | s.pipeline.SetPropertyUint("encoder", prop, value) 250 | } 251 | 252 | func (s *GstreamerSource) GetTargetBitsPerSecond() uint { 253 | prop := "bitrate" 254 | if s.codec == "vp8" || s.codec == "vp9" { 255 | prop = "target-bitrate" 256 | } 257 | return s.pipeline.GetPropertyUint("encoder", prop) 258 | } 259 | 260 | type GstreamerSink struct { 261 | Config 262 | io.Writer 263 | pipeline *gstreamer.Pipeline 264 | } 265 | 266 | func NewGstreamerSink(dst string, opts ...ConfigOption) (*GstreamerSink, error) { 267 | c, err := newConfig(opts...) 268 | if err != nil { 269 | return nil, err 270 | } 271 | 272 | builder := gstreamer.Elements{ 273 | gstreamer.NewElement("appsrc", gstreamer.Set("name", "src")), 274 | } 275 | 276 | jitterBufferSettings := []gstreamer.ElementOption{} 277 | 278 | switch c.codec { 279 | case "vp8": 280 | builder = append(builder, 281 | gstreamer.NewElement("application/x-rtp, encoding-name=VP8-DRAFT-IETF-01"), 282 | gstreamer.NewElement("rtpjitterbuffer", jitterBufferSettings...), 283 | gstreamer.NewElement("rtpvp8depay"), 284 | ) 285 | case "vp9": 286 | builder = append(builder, 287 | gstreamer.NewElement("application/x-rtp, encoding-name=VP9-DRAFT-IETF-01"), 288 | gstreamer.NewElement("rtpjitterbuffer", jitterBufferSettings...), 289 | gstreamer.NewElement("rtpvp9depay"), 290 | ) 291 | case "h264": 292 | builder = append(builder, 293 | gstreamer.NewElement("application/x-rtp"), 294 | gstreamer.NewElement("rtpjitterbuffer", jitterBufferSettings...), 295 | gstreamer.NewElement("rtph264depay"), 296 | ) 297 | case "h265": 298 | builder = append(builder, 299 | gstreamer.NewElement("application/x-rtp"), 300 | gstreamer.NewElement("rtpjitterbuffer", jitterBufferSettings...), 301 | gstreamer.NewElement("rtph265depay"), 302 | ) 303 | case "av1": 304 | panic("rtpav1depay is not yet implemented in Gstreamer") 305 | //builder = append(builder, 306 | // gstreamer.NewElement("rtpjitterbuffer", jitterBufferSettings...), 307 | // gstreamer.NewElement("rtpav1depay"), 308 | //) 309 | } 310 | 311 | builder = append(builder, 312 | gstreamer.NewElement("decodebin"), 313 | gstreamer.NewElement("videoconvert"), 314 | gstreamer.NewElement("clocksync"), 315 | gstreamer.NewElement("videorate"), 316 | ) 317 | 318 | if teeLiveVideo { 319 | builder = append(builder, 320 | gstreamer.NewElement("tee", gstreamer.Set("name", "t")), 321 | gstreamer.NewElement("queue"), 322 | gstreamer.NewElement("autovideosink t."), 323 | gstreamer.NewElement("queue"), 324 | ) 325 | } 326 | 327 | if dst == "autovideosink" { 328 | builder = append(builder, 329 | gstreamer.NewElement("autovideosink"), 330 | ) 331 | } else { 332 | builder = append(builder, 333 | gstreamer.NewElement("y4menc"), 334 | gstreamer.NewElement(fmt.Sprintf("filesink location=%v", dst)), 335 | ) 336 | } 337 | 338 | pipelineStr := builder.Build() 339 | log.Printf("sink pipeline: %v", pipelineStr) 340 | 341 | pipeline, err := gstreamer.NewPipeline(pipelineStr) 342 | if err != nil { 343 | return nil, err 344 | } 345 | s := &GstreamerSink{ 346 | Config: *c, 347 | Writer: pipeline, 348 | pipeline: pipeline, 349 | } 350 | return s, nil 351 | } 352 | 353 | func (s *GstreamerSink) Play() error { 354 | go s.pipeline.Start() 355 | return nil 356 | } 357 | 358 | func (s *GstreamerSink) Stop() error { 359 | return s.pipeline.Close() 360 | } 361 | -------------------------------------------------------------------------------- /scream/sender_interceptor.go: -------------------------------------------------------------------------------- 1 | package scream 2 | 3 | import ( 4 | "encoding/binary" 5 | "fmt" 6 | "strings" 7 | "sync" 8 | "time" 9 | 10 | "github.com/mengelbart/scream-go" 11 | "github.com/pion/interceptor" 12 | "github.com/pion/logging" 13 | "github.com/pion/rtcp" 14 | "github.com/pion/rtp" 15 | ) 16 | 17 | type BandwidthEstimator interface { 18 | GetTargetBitrate(ssrc uint32) (int, error) 19 | GetStats() map[string]interface{} 20 | } 21 | 22 | type NewPeerConnectionCallback func(id string, estimator BandwidthEstimator) 23 | 24 | // RTPQueue implements the packet queue which will be used by SCReAM to buffer packets 25 | type RTPQueue interface { 26 | scream.RTPQueue 27 | // Enqueue adds a new packet to the end of the queue. 28 | Enqueue(packet *packet, ts float64) 29 | // Dequeue removes and returns the first packet in the queue. 30 | Dequeue() *packet 31 | } 32 | 33 | type localStream struct { 34 | queue RTPQueue 35 | newFrame chan struct{} 36 | newFeedback chan struct{} 37 | close chan struct{} 38 | } 39 | 40 | type SenderInterceptorFactory struct { 41 | opts []SenderOption 42 | addPeerConnection NewPeerConnectionCallback 43 | } 44 | 45 | func NewSenderInterceptor(opts ...SenderOption) (*SenderInterceptorFactory, error) { 46 | return &SenderInterceptorFactory{ 47 | opts: opts, 48 | }, nil 49 | } 50 | 51 | func (f *SenderInterceptorFactory) OnNewPeerConnection(cb NewPeerConnectionCallback) { 52 | f.addPeerConnection = cb 53 | } 54 | 55 | func (f *SenderInterceptorFactory) NewInterceptor(id string) (interceptor.Interceptor, error) { 56 | s := &SenderInterceptor{ 57 | NoOp: interceptor.NoOp{}, 58 | m: sync.Mutex{}, 59 | wg: sync.WaitGroup{}, 60 | tx: scream.NewTx(), 61 | close: make(chan struct{}), 62 | log: logging.NewDefaultLoggerFactory().NewLogger("scream_sender"), 63 | newRTPQueue: newQueue, 64 | rtpStreams: map[uint32]*localStream{}, 65 | rtpStreamsMu: sync.Mutex{}, 66 | minBitrate: 100_000, 67 | initialBitrate: 500_000, 68 | maxBitrate: 100_000_000, 69 | } 70 | for _, opt := range f.opts { 71 | if err := opt(s); err != nil { 72 | return nil, err 73 | } 74 | } 75 | if f.addPeerConnection != nil { 76 | f.addPeerConnection(id, s) 77 | } 78 | return s, nil 79 | } 80 | 81 | // SenderInterceptor performs SCReAM congestion control 82 | type SenderInterceptor struct { 83 | interceptor.NoOp 84 | m sync.Mutex 85 | wg sync.WaitGroup 86 | tx *scream.Tx 87 | close chan struct{} 88 | log logging.LeveledLogger 89 | 90 | newRTPQueue func() RTPQueue 91 | rtpStreams map[uint32]*localStream 92 | rtpStreamsMu sync.Mutex 93 | 94 | minBitrate float64 95 | initialBitrate float64 96 | maxBitrate float64 97 | } 98 | 99 | func (s *SenderInterceptor) getTimeNTP(t time.Time) uint64 { 100 | return uint64(ntpTime32(t)) 101 | } 102 | 103 | // BindRTCPReader lets you modify any incoming RTCP packets. It is called once per sender/receiver, however this might 104 | // change in the future. The returned method will be called once per packet batch. 105 | func (s *SenderInterceptor) BindRTCPReader(reader interceptor.RTCPReader) interceptor.RTCPReader { 106 | return interceptor.RTCPReaderFunc(func(b []byte, a interceptor.Attributes) (int, interceptor.Attributes, error) { 107 | timestamp := time.Now() 108 | if ts, ok := a["timestamp"]; ok { 109 | if t, ok := ts.(time.Time); ok { 110 | timestamp = t 111 | } 112 | } 113 | t := s.getTimeNTP(timestamp) 114 | 115 | n, attr, err := reader.Read(b, a) 116 | if err != nil { 117 | return 0, nil, err 118 | } 119 | buf := make([]byte, n) 120 | copy(buf, b) 121 | pkts, err := rtcp.Unmarshal(buf) 122 | if err != nil { 123 | return 0, nil, err 124 | } 125 | 126 | for _, pkt := range pkts { 127 | 128 | var ssrcs []uint32 129 | switch report := pkt.(type) { 130 | case *rtcp.RawPacket: 131 | ssrcs = extractSSRCs(*report) 132 | case *rtcp.CCFeedbackReport: 133 | ssrcs = extractSSRCsReport(report) 134 | default: 135 | s.log.Info("got incorrect packet type, skipping feedback") 136 | continue 137 | } 138 | 139 | s.m.Lock() 140 | s.tx.IncomingStandardizedFeedback(t, b[:n]) 141 | s.m.Unlock() 142 | 143 | for _, ssrc := range ssrcs { 144 | s.rtpStreamsMu.Lock() 145 | if stream, ok := s.rtpStreams[ssrc]; ok { 146 | stream.newFeedback <- struct{}{} 147 | } 148 | s.rtpStreamsMu.Unlock() 149 | } 150 | } 151 | 152 | return n, attr, nil 153 | }) 154 | } 155 | 156 | func extractSSRCsReport(report *rtcp.CCFeedbackReport) []uint32 { 157 | ssrcs := make([]uint32, len(report.ReportBlocks)) 158 | for i, block := range report.ReportBlocks { 159 | ssrcs[i] = block.MediaSSRC 160 | } 161 | return ssrcs 162 | } 163 | 164 | func extractSSRCs(packet []byte) []uint32 { 165 | uniqueSSRCs := make(map[uint32]struct{}) 166 | var ssrcs []uint32 167 | 168 | offset := 8 169 | for offset < len(packet)-4 { 170 | ssrc := binary.BigEndian.Uint32(packet[offset:]) 171 | 172 | if _, ok := uniqueSSRCs[ssrc]; !ok { 173 | ssrcs = append(ssrcs, ssrc) 174 | uniqueSSRCs[ssrc] = struct{}{} 175 | } 176 | 177 | numReports := binary.BigEndian.Uint16(packet[offset+6:]) 178 | 179 | // pad 16 bits 0 if numReports is not a multiple of 2 180 | if numReports%2 != 0 { 181 | numReports++ 182 | } 183 | offset += 2 * int(numReports) // 2 bytes per report 184 | offset += 8 // 4 byte SSRC + 2 bytes begin_seq + 2 bytes num_reports 185 | } 186 | 187 | return ssrcs 188 | } 189 | 190 | // BindLocalStream lets you modify any outgoing RTP packets. It is called once for per LocalStream. The returned method 191 | // will be called once per rtp packet. 192 | func (s *SenderInterceptor) BindLocalStream(info *interceptor.StreamInfo, writer interceptor.RTPWriter) interceptor.RTPWriter { 193 | 194 | s.m.Lock() 195 | defer s.m.Unlock() 196 | 197 | if s.isClosed() { 198 | return writer 199 | } 200 | 201 | s.wg.Add(1) 202 | 203 | rtpQueue := s.newRTPQueue() 204 | localStream := &localStream{ 205 | queue: rtpQueue, 206 | newFrame: make(chan struct{}), 207 | newFeedback: make(chan struct{}), 208 | } 209 | 210 | // TODO: Somehow set these attributes per stream 211 | priority := float64(1) // highest priority 212 | minBitrate := s.minBitrate 213 | startBitrate := s.initialBitrate 214 | maxBitrate := s.maxBitrate 215 | 216 | initialized := false 217 | 218 | return interceptor.RTPWriterFunc(func(header *rtp.Header, payload []byte, attributes interceptor.Attributes) (int, error) { 219 | if !initialized { 220 | s.rtpStreamsMu.Lock() 221 | s.rtpStreams[info.SSRC] = localStream 222 | s.rtpStreamsMu.Unlock() 223 | s.tx.RegisterNewStream(rtpQueue, info.SSRC, priority, minBitrate, startBitrate, maxBitrate) 224 | go s.loopPacingTimer(writer, info.SSRC) 225 | initialized = true 226 | } 227 | now := time.Now() 228 | t := s.getTimeNTP(now) 229 | 230 | buf := make([]byte, len(payload)) 231 | copy(buf, payload) 232 | pkt := &rtp.Packet{Header: header.Clone(), Payload: buf} 233 | 234 | rtpQueue.Enqueue(&packet{ 235 | rtp: pkt, 236 | timestamp: now, 237 | attributes: attributes, 238 | }, float64(t)/65536.0) 239 | size := pkt.MarshalSize() 240 | s.m.Lock() 241 | s.tx.NewMediaFrame(t, header.SSRC, size) 242 | s.m.Unlock() 243 | localStream.newFrame <- struct{}{} 244 | return size, nil 245 | }) 246 | } 247 | 248 | // UnbindLocalStream is called when the Stream is removed. It can be used to clean up any data related to that track. 249 | func (s *SenderInterceptor) UnbindLocalStream(info *interceptor.StreamInfo) { 250 | s.rtpStreamsMu.Lock() 251 | defer s.rtpStreamsMu.Unlock() 252 | close(s.rtpStreams[info.SSRC].close) 253 | delete(s.rtpStreams, info.SSRC) 254 | } 255 | 256 | // Close closes the interceptor 257 | func (s *SenderInterceptor) Close() error { 258 | defer s.wg.Wait() 259 | s.m.Lock() 260 | defer s.m.Unlock() 261 | 262 | if !s.isClosed() { 263 | close(s.close) 264 | } 265 | return nil 266 | } 267 | 268 | func (s *SenderInterceptor) loopPacingTimer(writer interceptor.RTPWriter, ssrc uint32) { 269 | defer s.wg.Done() 270 | s.rtpStreamsMu.Lock() 271 | stream := s.rtpStreams[ssrc] 272 | s.rtpStreamsMu.Unlock() 273 | 274 | s.log.Infof("start send loop for ssrc: %v\n", ssrc) 275 | defer s.log.Infof("leave send loop for ssrc: %v", ssrc) 276 | 277 | timer := make(chan struct{}) 278 | timerSet := false 279 | for { 280 | select { 281 | case <-stream.newFeedback: 282 | if timerSet { 283 | continue 284 | } 285 | case <-stream.newFrame: 286 | if timerSet { 287 | continue 288 | } 289 | case <-timer: 290 | timerSet = false 291 | timer = make(chan struct{}) 292 | case <-s.close: 293 | return 294 | } 295 | 296 | if stream.queue.SizeOfQueue() <= 0 { 297 | continue 298 | } 299 | 300 | for { 301 | s.m.Lock() 302 | transmit := s.tx.IsOkToTransmit(s.getTimeNTP(time.Now()), ssrc) 303 | s.m.Unlock() 304 | 305 | if transmit == -1 { 306 | // no packets or CWND too small 307 | break 308 | } 309 | 310 | if transmit <= 1e-3 { 311 | // send packet 312 | packet := stream.queue.Dequeue() 313 | if packet == nil { 314 | break 315 | } 316 | if _, err := writer.Write(&packet.rtp.Header, packet.rtp.Payload, packet.attributes); err != nil { 317 | s.log.Warnf("failed sending RTP packet: %+v", err) 318 | } 319 | s.m.Lock() 320 | s.tx.AddTransmitted(s.getTimeNTP(time.Now()), ssrc, packet.rtp.MarshalSize(), packet.rtp.SequenceNumber, packet.rtp.Marker) 321 | s.m.Unlock() 322 | } 323 | 324 | if transmit > 1e-3 { 325 | go func() { 326 | d := time.Duration(1000*transmit) * time.Millisecond 327 | t := time.AfterFunc(d, func() { 328 | close(timer) 329 | }) 330 | <-timer 331 | t.Stop() 332 | }() 333 | timerSet = true 334 | break 335 | } 336 | } 337 | } 338 | } 339 | 340 | // GetTargetBitrate returns the target bitrate calculated by SCReAM in bps. 341 | func (s *SenderInterceptor) GetTargetBitrate(ssrc uint32) (int, error) { 342 | s.rtpStreamsMu.Lock() 343 | _, ok := s.rtpStreams[ssrc] 344 | s.rtpStreamsMu.Unlock() 345 | if !ok { 346 | return 0, fmt.Errorf("unknown SSRC, the stream may be unsupported or not yet registered") 347 | } 348 | 349 | s.m.Lock() 350 | defer s.m.Unlock() 351 | return int(s.tx.GetTargetBitrate(ssrc)), nil 352 | } 353 | 354 | func (s *SenderInterceptor) GetStats() map[string]interface{} { 355 | stats := s.tx.GetStatistics(s.getTimeNTP(time.Now())/65536.0, false) 356 | statSlice := strings.Split(stats, ",") 357 | keys := []string{ 358 | "logTag", 359 | "queueDelay", 360 | "queueDelayMax", 361 | "queueDelayMinAvg", 362 | "sRTT", 363 | "cwnd", 364 | "bytesInFlightLog", 365 | "rateTransmittedConnection", 366 | "isInFastStart", 367 | "rtpQueueDelayStream0", 368 | "rtpQueueBytesInQueueStream0", 369 | "rtpQueueSizeOfQueueStream0", 370 | "targetBitrateStream0", 371 | "rateRTPStream0", 372 | "packetsRTPStream0", 373 | "rateTransmittedStream0", 374 | "rateAckedStream0", 375 | "rateLostStream0", 376 | "rateCEStream0", 377 | "packetsCEStream0", 378 | "hiSeqAckStream0", 379 | "clearedStream0", 380 | "packetsLostStream0", 381 | } 382 | res := make(map[string]interface{}) 383 | for i := 0; i < len(statSlice) && i < len(keys); i++ { 384 | val := strings.TrimSpace(statSlice[i]) 385 | res[keys[i]] = val 386 | } 387 | return res 388 | } 389 | 390 | func (s *SenderInterceptor) isClosed() bool { 391 | select { 392 | case <-s.close: 393 | return true 394 | default: 395 | return false 396 | } 397 | } 398 | 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v0.22.2/go.mod h1:yxeiOL68Rb0Xd1ddK5vPZ/oVn4vY4Ynel7k9FzqtOIw= 466 | go.opencensus.io v0.22.3/go.mod h1:yxeiOL68Rb0Xd1ddK5vPZ/oVn4vY4Ynel7k9FzqtOIw= 467 | go.opencensus.io v0.22.4/go.mod h1:yxeiOL68Rb0Xd1ddK5vPZ/oVn4vY4Ynel7k9FzqtOIw= 468 | go.opencensus.io v0.22.5/go.mod h1:5pWMHQbX5EPX2/62yrJeAkowc+lfs/XD7Uxpq3pI6kk= 469 | go.opencensus.io v0.23.0/go.mod h1:XItmlyltB5F7CS4xOC1DcqMoFqwtC6OG2xF7mCv7P7E= 470 | go.opentelemetry.io/proto/otlp v0.7.0/go.mod h1:PqfVotwruBrMGOCsRd/89rSnXhoiJIqeYNgFYFoEGnI= 471 | go.uber.org/atomic v1.7.0/go.mod h1:fEN4uk6kAWBTFdckzkM89CLk9XfWZrxpCo0nPH17wJc= 472 | go.uber.org/multierr v1.6.0/go.mod h1:cdWPpRnG4AhwMwsgIHip0KRBQjJy5kYEpYjJxpXp9iU= 473 | go.uber.org/zap v1.17.0/go.mod h1:MXVU+bhUf/A7Xi2HNOnopQOrmycQ5Ih87HtOu4q5SSo= 474 | go4.org v0.0.0-20180809161055-417644f6feb5/go.mod h1:MkTOUMDaeVYJUOUsaDXIhWPZYa1yOyC1qaOBpL57BhE= 475 | golang.org/x/build v0.0.0-20190111050920-041ab4dc3f9d/go.mod h1:OWs+y06UdEOHN4y+MfF/py+xQ/tYqIWW03b70/CG9Rw= 476 | golang.org/x/crypto v0.0.0-20180904163835-0709b304e793/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4= 477 | golang.org/x/crypto v0.0.0-20181029021203-45a5f77698d3/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4= 478 | golang.org/x/crypto v0.0.0-20181030102418-4d3f4d9ffa16/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4= 479 | golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w= 480 | golang.org/x/crypto v0.0.0-20190313024323-a1f597ede03a/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w= 481 | golang.org/x/crypto v0.0.0-20190510104115-cbcb75029529/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI= 482 | golang.org/x/crypto v0.0.0-20190605123033-f99c8df09eb5/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI= 483 | golang.org/x/crypto v0.0.0-20190820162420-60c769a6c586/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI= 484 | golang.org/x/crypto v0.0.0-20190923035154-9ee001bba392/go.mod 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golang.org/x/net v0.0.0-20190603091049-60506f45cf65/go.mod h1:HSz+uSET+XFnRR8LxR5pz3Of3rY3CfYBVs4xY44aLks= 548 | golang.org/x/net v0.0.0-20190613194153-d28f0bde5980/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s= 549 | golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s= 550 | golang.org/x/net v0.0.0-20190628185345-da137c7871d7/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s= 551 | golang.org/x/net v0.0.0-20190724013045-ca1201d0de80/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s= 552 | golang.org/x/net v0.0.0-20190923162816-aa69164e4478/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s= 553 | golang.org/x/net v0.0.0-20191209160850-c0dbc17a3553/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s= 554 | golang.org/x/net v0.0.0-20200114155413-6afb5195e5aa/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s= 555 | golang.org/x/net v0.0.0-20200202094626-16171245cfb2/go.mod 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golang.org/x/net v0.0.0-20210119194325-5f4716e94777/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg= 574 | golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg= 575 | golang.org/x/net v0.0.0-20210316092652-d523dce5a7f4/go.mod h1:RBQZq4jEuRlivfhVLdyRGr576XBO4/greRjx4P4O3yc= 576 | golang.org/x/net v0.0.0-20210405180319-a5a99cb37ef4/go.mod h1:p54w0d4576C0XHj96bSt6lcn1PtDYWL6XObtHCRCNQM= 577 | golang.org/x/net v0.0.0-20210410081132-afb366fc7cd1/go.mod h1:9tjilg8BloeKEkVJvy7fQ90B1CfIiPueXVOjqfkSzI8= 578 | golang.org/x/net v0.0.0-20210428140749-89ef3d95e781/go.mod h1:OJAsFXCWl8Ukc7SiCT/9KSuxbyM7479/AVlXFRxuMCk= 579 | golang.org/x/net v0.0.0-20210503060351-7fd8e65b6420/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y= 580 | golang.org/x/net v0.0.0-20210813160813-60bc85c4be6d/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y= 581 | golang.org/x/net v0.0.0-20211112202133-69e39bad7dc2/go.mod 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h1:KelEdhl1UZF7XfJ4dDtk6s++YSgaE7mD/BuKKDLBl4A= 599 | golang.org/x/oauth2 v0.0.0-20210218202405-ba52d332ba99/go.mod h1:KelEdhl1UZF7XfJ4dDtk6s++YSgaE7mD/BuKKDLBl4A= 600 | golang.org/x/oauth2 v0.0.0-20210220000619-9bb904979d93/go.mod h1:KelEdhl1UZF7XfJ4dDtk6s++YSgaE7mD/BuKKDLBl4A= 601 | golang.org/x/oauth2 v0.0.0-20210313182246-cd4f82c27b84/go.mod h1:KelEdhl1UZF7XfJ4dDtk6s++YSgaE7mD/BuKKDLBl4A= 602 | golang.org/x/oauth2 v0.0.0-20210514164344-f6687ab2804c/go.mod h1:KelEdhl1UZF7XfJ4dDtk6s++YSgaE7mD/BuKKDLBl4A= 603 | golang.org/x/oauth2 v0.0.0-20210628180205-a41e5a781914/go.mod h1:KelEdhl1UZF7XfJ4dDtk6s++YSgaE7mD/BuKKDLBl4A= 604 | golang.org/x/oauth2 v0.0.0-20210805134026-6f1e6394065a/go.mod h1:KelEdhl1UZF7XfJ4dDtk6s++YSgaE7mD/BuKKDLBl4A= 605 | golang.org/x/oauth2 v0.0.0-20210819190943-2bc19b11175f/go.mod h1:KelEdhl1UZF7XfJ4dDtk6s++YSgaE7mD/BuKKDLBl4A= 606 | golang.org/x/oauth2 v0.0.0-20211005180243-6b3c2da341f1/go.mod h1:KelEdhl1UZF7XfJ4dDtk6s++YSgaE7mD/BuKKDLBl4A= 607 | golang.org/x/oauth2 v0.0.0-20211104180415-d3ed0bb246c8/go.mod h1:KelEdhl1UZF7XfJ4dDtk6s++YSgaE7mD/BuKKDLBl4A= 608 | golang.org/x/perf v0.0.0-20180704124530-6e6d33e29852/go.mod h1:JLpeXjPJfIyPr5TlbXLkXWLhP8nz10XfvxElABhCtcw= 609 | golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM= 610 | golang.org/x/sync v0.0.0-20181108010431-42b317875d0f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM= 611 | golang.org/x/sync v0.0.0-20181221193216-37e7f081c4d4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM= 612 | golang.org/x/sync v0.0.0-20190227155943-e225da77a7e6/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM= 613 | golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM= 614 | golang.org/x/sync v0.0.0-20190911185100-cd5d95a43a6e/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM= 615 | golang.org/x/sync v0.0.0-20200317015054-43a5402ce75a/go.mod 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v0.0.0-20181026203630-95b1ffbd15a5/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY= 625 | golang.org/x/sys v0.0.0-20181029174526-d69651ed3497/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY= 626 | golang.org/x/sys v0.0.0-20181116152217-5ac8a444bdc5/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY= 627 | golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY= 628 | golang.org/x/sys v0.0.0-20190222072716-a9d3bda3a223/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY= 629 | golang.org/x/sys v0.0.0-20190312061237-fead79001313/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs= 630 | golang.org/x/sys v0.0.0-20190316082340-a2f829d7f35f/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs= 631 | golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs= 632 | golang.org/x/sys v0.0.0-20190422165155-953cdadca894/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs= 633 | golang.org/x/sys v0.0.0-20190502145724-3ef323f4f1fd/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs= 634 | golang.org/x/sys v0.0.0-20190507160741-ecd444e8653b/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs= 635 | golang.org/x/sys v0.0.0-20190606165138-5da285871e9c/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs= 636 | golang.org/x/sys v0.0.0-20190624142023-c5567b49c5d0/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs= 637 | golang.org/x/sys v0.0.0-20190726091711-fc99dfbffb4e/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs= 638 | golang.org/x/sys v0.0.0-20190904154756-749cb33beabd/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs= 639 | golang.org/x/sys v0.0.0-20190922100055-0a153f010e69/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs= 640 | golang.org/x/sys v0.0.0-20190924154521-2837fb4f24fe/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs= 641 | golang.org/x/sys v0.0.0-20191001151750-bb3f8db39f24/go.mod 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golang.org/x/sys v0.0.0-20200511232937-7e40ca221e25/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs= 660 | golang.org/x/sys v0.0.0-20200515095857-1151b9dac4a9/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs= 661 | golang.org/x/sys v0.0.0-20200523222454-059865788121/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs= 662 | golang.org/x/sys v0.0.0-20200803210538-64077c9b5642/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs= 663 | golang.org/x/sys v0.0.0-20200905004654-be1d3432aa8f/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs= 664 | golang.org/x/sys v0.0.0-20200930185726-fdedc70b468f/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs= 665 | golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs= 666 | golang.org/x/sys v0.0.0-20201201145000-ef89a241ccb3/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs= 667 | golang.org/x/sys v0.0.0-20210104204734-6f8348627aad/go.mod 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h1:o4eAsZoiT+ibD93RtjEohWalFOjRDx6CVaqeizhEnKg= 784 | google.golang.org/api v0.13.0/go.mod h1:iLdEw5Ide6rF15KTC1Kkl0iskquN2gFfn9o9XIsbkAI= 785 | google.golang.org/api v0.14.0/go.mod h1:iLdEw5Ide6rF15KTC1Kkl0iskquN2gFfn9o9XIsbkAI= 786 | google.golang.org/api v0.15.0/go.mod h1:iLdEw5Ide6rF15KTC1Kkl0iskquN2gFfn9o9XIsbkAI= 787 | google.golang.org/api v0.17.0/go.mod h1:BwFmGc8tA3vsd7r/7kR8DY7iEEGSU04BFxCo5jP/sfE= 788 | google.golang.org/api v0.18.0/go.mod h1:BwFmGc8tA3vsd7r/7kR8DY7iEEGSU04BFxCo5jP/sfE= 789 | google.golang.org/api v0.19.0/go.mod h1:BwFmGc8tA3vsd7r/7kR8DY7iEEGSU04BFxCo5jP/sfE= 790 | google.golang.org/api v0.20.0/go.mod h1:BwFmGc8tA3vsd7r/7kR8DY7iEEGSU04BFxCo5jP/sfE= 791 | google.golang.org/api v0.22.0/go.mod h1:BwFmGc8tA3vsd7r/7kR8DY7iEEGSU04BFxCo5jP/sfE= 792 | google.golang.org/api v0.24.0/go.mod h1:lIXQywCXRcnZPGlsd8NbLnOjtAoL6em04bJ9+z0MncE= 793 | google.golang.org/api v0.28.0/go.mod h1:lIXQywCXRcnZPGlsd8NbLnOjtAoL6em04bJ9+z0MncE= 794 | google.golang.org/api v0.29.0/go.mod h1:Lcubydp8VUV7KeIHD9z2Bys/sm/vGKnG1UHuDBSrHWM= 795 | google.golang.org/api v0.30.0/go.mod h1:QGmEvQ87FHZNiUVJkT14jQNYJ4ZJjdRF23ZXz5138Fc= 796 | google.golang.org/api v0.35.0/go.mod h1:/XrVsuzM0rZmrsbjJutiuftIzeuTQcEeaYcSk/mQ1dg= 797 | google.golang.org/api v0.36.0/go.mod h1:+z5ficQTmoYpPn8LCUNVpK5I7hwkpjbcgqA7I34qYtE= 798 | google.golang.org/api v0.40.0/go.mod h1:fYKFpnQN0DsDSKRVRcQSDQNtqWPfM9i+zNPxepjRCQ8= 799 | google.golang.org/api v0.41.0/go.mod h1:RkxM5lITDfTzmyKFPt+wGrCJbVfniCr2ool8kTBzRTU= 800 | google.golang.org/api v0.43.0/go.mod h1:nQsDGjRXMo4lvh5hP0TKqF244gqhGcr/YSIykhUk/94= 801 | google.golang.org/api v0.47.0/go.mod h1:Wbvgpq1HddcWVtzsVLyfLp8lDg6AA241LmgIL59tHXo= 802 | google.golang.org/api v0.48.0/go.mod h1:71Pr1vy+TAZRPkPs/xlCf5SsU8WjuAWv1Pfjbtukyy4= 803 | google.golang.org/api v0.50.0/go.mod h1:4bNT5pAuq5ji4SRZm+5QIkjny9JAyVD/3gaSihNefaw= 804 | google.golang.org/api v0.51.0/go.mod h1:t4HdrdoNgyN5cbEfm7Lum0lcLDLiise1F8qDKX00sOU= 805 | google.golang.org/api v0.54.0/go.mod h1:7C4bFFOvVDGXjfDTAsgGwDgAxRDeQ4X8NvUedIt6z3k= 806 | google.golang.org/api v0.55.0/go.mod h1:38yMfeP1kfjsl8isn0tliTjIb1rJXcQi4UXlbqivdVE= 807 | google.golang.org/api v0.56.0/go.mod h1:38yMfeP1kfjsl8isn0tliTjIb1rJXcQi4UXlbqivdVE= 808 | google.golang.org/api v0.57.0/go.mod h1:dVPlbZyBo2/OjBpmvNdpn2GRm6rPy75jyU7bmhdrMgI= 809 | google.golang.org/api v0.59.0/go.mod h1:sT2boj7M9YJxZzgeZqXogmhfmRWDtPzT31xkieUbuZU= 810 | google.golang.org/api v0.61.0/go.mod h1:xQRti5UdCmoCEqFxcz93fTl338AVqDgyaDRuOZ3hg9I= 811 | google.golang.org/api v0.62.0/go.mod h1:dKmwPCydfsad4qCH08MSdgWjfHOyfpd4VtDGgRFdavw= 812 | google.golang.org/appengine v1.1.0/go.mod h1:EbEs0AVv82hx2wNQdGPgUI5lhzA/G0D9YwlJXL52JkM= 813 | google.golang.org/appengine v1.2.0/go.mod h1:xpcJRLb0r/rnEns0DIKYYv+WjYCduHsrkT7/EB5XEv4= 814 | google.golang.org/appengine v1.3.0/go.mod h1:xpcJRLb0r/rnEns0DIKYYv+WjYCduHsrkT7/EB5XEv4= 815 | google.golang.org/appengine v1.4.0/go.mod h1:xpcJRLb0r/rnEns0DIKYYv+WjYCduHsrkT7/EB5XEv4= 816 | google.golang.org/appengine v1.5.0/go.mod h1:xpcJRLb0r/rnEns0DIKYYv+WjYCduHsrkT7/EB5XEv4= 817 | google.golang.org/appengine v1.6.1/go.mod h1:i06prIuMbXzDqacNJfV5OdTW448YApPu5ww/cMBSeb0= 818 | google.golang.org/appengine v1.6.5/go.mod h1:8WjMMxjGQR8xUklV/ARdw2HLXBOI7O7uCIDZVag1xfc= 819 | google.golang.org/appengine v1.6.6/go.mod h1:8WjMMxjGQR8xUklV/ARdw2HLXBOI7O7uCIDZVag1xfc= 820 | google.golang.org/appengine v1.6.7/go.mod h1:8WjMMxjGQR8xUklV/ARdw2HLXBOI7O7uCIDZVag1xfc= 821 | google.golang.org/genproto v0.0.0-20180817151627-c66870c02cf8/go.mod h1:JiN7NxoALGmiZfu7CAH4rXhgtRTLTxftemlI0sWmxmc= 822 | google.golang.org/genproto v0.0.0-20180831171423-11092d34479b/go.mod h1:JiN7NxoALGmiZfu7CAH4rXhgtRTLTxftemlI0sWmxmc= 823 | google.golang.org/genproto v0.0.0-20181029155118-b69ba1387ce2/go.mod h1:JiN7NxoALGmiZfu7CAH4rXhgtRTLTxftemlI0sWmxmc= 824 | google.golang.org/genproto v0.0.0-20181202183823-bd91e49a0898/go.mod h1:7Ep/1NZk928CDR8SjdVbjWNpdIf6nzjE3BTgJDr2Atg= 825 | google.golang.org/genproto v0.0.0-20190306203927-b5d61aea6440/go.mod h1:VzzqZJRnGkLBvHegQrXjBqPurQTc5/KpmUdxsrq26oE= 826 | google.golang.org/genproto v0.0.0-20190307195333-5fe7a883aa19/go.mod h1:VzzqZJRnGkLBvHegQrXjBqPurQTc5/KpmUdxsrq26oE= 827 | google.golang.org/genproto v0.0.0-20190418145605-e7d98fc518a7/go.mod h1:VzzqZJRnGkLBvHegQrXjBqPurQTc5/KpmUdxsrq26oE= 828 | google.golang.org/genproto v0.0.0-20190425155659-357c62f0e4bb/go.mod h1:VzzqZJRnGkLBvHegQrXjBqPurQTc5/KpmUdxsrq26oE= 829 | google.golang.org/genproto v0.0.0-20190502173448-54afdca5d873/go.mod h1:VzzqZJRnGkLBvHegQrXjBqPurQTc5/KpmUdxsrq26oE= 830 | google.golang.org/genproto v0.0.0-20190801165951-fa694d86fc64/go.mod h1:DMBHOl98Agz4BDEuKkezgsaosCRResVns1a3J2ZsMNc= 831 | google.golang.org/genproto v0.0.0-20190819201941-24fa4b261c55/go.mod h1:DMBHOl98Agz4BDEuKkezgsaosCRResVns1a3J2ZsMNc= 832 | google.golang.org/genproto v0.0.0-20190911173649-1774047e7e51/go.mod h1:IbNlFCBrqXvoKpeg0TB2l7cyZUmoaFKYIwrEpbDKLA8= 833 | google.golang.org/genproto v0.0.0-20191108220845-16a3f7862a1a/go.mod h1:n3cpQtvxv34hfy77yVDNjmbRyujviMdxYliBSkLhpCc= 834 | google.golang.org/genproto v0.0.0-20191115194625-c23dd37a84c9/go.mod h1:n3cpQtvxv34hfy77yVDNjmbRyujviMdxYliBSkLhpCc= 835 | google.golang.org/genproto v0.0.0-20191216164720-4f79533eabd1/go.mod h1:n3cpQtvxv34hfy77yVDNjmbRyujviMdxYliBSkLhpCc= 836 | google.golang.org/genproto v0.0.0-20191230161307-f3c370f40bfb/go.mod h1:n3cpQtvxv34hfy77yVDNjmbRyujviMdxYliBSkLhpCc= 837 | google.golang.org/genproto v0.0.0-20200115191322-ca5a22157cba/go.mod h1:n3cpQtvxv34hfy77yVDNjmbRyujviMdxYliBSkLhpCc= 838 | google.golang.org/genproto v0.0.0-20200122232147-0452cf42e150/go.mod h1:n3cpQtvxv34hfy77yVDNjmbRyujviMdxYliBSkLhpCc= 839 | google.golang.org/genproto v0.0.0-20200204135345-fa8e72b47b90/go.mod h1:GmwEX6Z4W5gMy59cAlVYjN9JhxgbQH6Gn+gFDQe2lzA= 840 | google.golang.org/genproto v0.0.0-20200212174721-66ed5ce911ce/go.mod h1:55QSHmfGQM9UVYDPBsyGGes0y52j32PQ3BqQfXhyH3c= 841 | google.golang.org/genproto v0.0.0-20200224152610-e50cd9704f63/go.mod h1:55QSHmfGQM9UVYDPBsyGGes0y52j32PQ3BqQfXhyH3c= 842 | google.golang.org/genproto v0.0.0-20200228133532-8c2c7df3a383/go.mod h1:55QSHmfGQM9UVYDPBsyGGes0y52j32PQ3BqQfXhyH3c= 843 | google.golang.org/genproto v0.0.0-20200305110556-506484158171/go.mod h1:55QSHmfGQM9UVYDPBsyGGes0y52j32PQ3BqQfXhyH3c= 844 | google.golang.org/genproto v0.0.0-20200312145019-da6875a35672/go.mod h1:55QSHmfGQM9UVYDPBsyGGes0y52j32PQ3BqQfXhyH3c= 845 | google.golang.org/genproto v0.0.0-20200331122359-1ee6d9798940/go.mod h1:55QSHmfGQM9UVYDPBsyGGes0y52j32PQ3BqQfXhyH3c= 846 | google.golang.org/genproto v0.0.0-20200430143042-b979b6f78d84/go.mod h1:55QSHmfGQM9UVYDPBsyGGes0y52j32PQ3BqQfXhyH3c= 847 | google.golang.org/genproto v0.0.0-20200511104702-f5ebc3bea380/go.mod h1:55QSHmfGQM9UVYDPBsyGGes0y52j32PQ3BqQfXhyH3c= 848 | google.golang.org/genproto v0.0.0-20200513103714-09dca8ec2884/go.mod h1:55QSHmfGQM9UVYDPBsyGGes0y52j32PQ3BqQfXhyH3c= 849 | google.golang.org/genproto v0.0.0-20200515170657-fc4c6c6a6587/go.mod h1:YsZOwe1myG/8QRHRsmBRE1LrgQY60beZKjly0O1fX9U= 850 | google.golang.org/genproto v0.0.0-20200526211855-cb27e3aa2013/go.mod h1:NbSheEEYHJ7i3ixzK3sjbqSGDJWnxyFXZblF3eUsNvo= 851 | google.golang.org/genproto v0.0.0-20200618031413-b414f8b61790/go.mod h1:jDfRM7FcilCzHH/e9qn6dsT145K34l5v+OpcnNgKAAA= 852 | google.golang.org/genproto v0.0.0-20200729003335-053ba62fc06f/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no= 853 | google.golang.org/genproto v0.0.0-20200804131852-c06518451d9c/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no= 854 | google.golang.org/genproto v0.0.0-20200825200019-8632dd797987/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no= 855 | google.golang.org/genproto v0.0.0-20200904004341-0bd0a958aa1d/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no= 856 | google.golang.org/genproto v0.0.0-20201109203340-2640f1f9cdfb/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no= 857 | google.golang.org/genproto v0.0.0-20201201144952-b05cb90ed32e/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no= 858 | google.golang.org/genproto v0.0.0-20201210142538-e3217bee35cc/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no= 859 | google.golang.org/genproto v0.0.0-20201214200347-8c77b98c765d/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no= 860 | google.golang.org/genproto v0.0.0-20210222152913-aa3ee6e6a81c/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no= 861 | google.golang.org/genproto v0.0.0-20210303154014-9728d6b83eeb/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no= 862 | google.golang.org/genproto v0.0.0-20210310155132-4ce2db91004e/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no= 863 | google.golang.org/genproto v0.0.0-20210319143718-93e7006c17a6/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no= 864 | google.golang.org/genproto v0.0.0-20210402141018-6c239bbf2bb1/go.mod h1:9lPAdzaEmUacj36I+k7YKbEc5CXzPIeORRgDAUOu28A= 865 | google.golang.org/genproto v0.0.0-20210513213006-bf773b8c8384/go.mod h1:P3QM42oQyzQSnHPnZ/vqoCdDmzH28fzWByN9asMeM8A= 866 | google.golang.org/genproto v0.0.0-20210602131652-f16073e35f0c/go.mod h1:UODoCrxHCcBojKKwX1terBiRUaqAsFqJiF615XL43r0= 867 | google.golang.org/genproto v0.0.0-20210604141403-392c879c8b08/go.mod h1:UODoCrxHCcBojKKwX1terBiRUaqAsFqJiF615XL43r0= 868 | google.golang.org/genproto v0.0.0-20210608205507-b6d2f5bf0d7d/go.mod h1:UODoCrxHCcBojKKwX1terBiRUaqAsFqJiF615XL43r0= 869 | google.golang.org/genproto v0.0.0-20210624195500-8bfb893ecb84/go.mod h1:SzzZ/N+nwJDaO1kznhnlzqS8ocJICar6hYhVyhi++24= 870 | google.golang.org/genproto v0.0.0-20210713002101-d411969a0d9a/go.mod h1:AxrInvYm1dci+enl5hChSFPOmmUF1+uAa/UsgNRWd7k= 871 | google.golang.org/genproto v0.0.0-20210716133855-ce7ef5c701ea/go.mod h1:AxrInvYm1dci+enl5hChSFPOmmUF1+uAa/UsgNRWd7k= 872 | google.golang.org/genproto v0.0.0-20210728212813-7823e685a01f/go.mod h1:ob2IJxKrgPT52GcgX759i1sleT07tiKowYBGbczaW48= 873 | google.golang.org/genproto v0.0.0-20210805201207-89edb61ffb67/go.mod h1:ob2IJxKrgPT52GcgX759i1sleT07tiKowYBGbczaW48= 874 | google.golang.org/genproto v0.0.0-20210813162853-db860fec028c/go.mod h1:cFeNkxwySK631ADgubI+/XFU/xp8FD5KIVV4rj8UC5w= 875 | google.golang.org/genproto v0.0.0-20210821163610-241b8fcbd6c8/go.mod h1:eFjDcFEctNawg4eG61bRv87N7iHBWyVhJu7u1kqDUXY= 876 | google.golang.org/genproto v0.0.0-20210828152312-66f60bf46e71/go.mod h1:eFjDcFEctNawg4eG61bRv87N7iHBWyVhJu7u1kqDUXY= 877 | google.golang.org/genproto v0.0.0-20210831024726-fe130286e0e2/go.mod h1:eFjDcFEctNawg4eG61bRv87N7iHBWyVhJu7u1kqDUXY= 878 | google.golang.org/genproto v0.0.0-20210903162649-d08c68adba83/go.mod h1:eFjDcFEctNawg4eG61bRv87N7iHBWyVhJu7u1kqDUXY= 879 | google.golang.org/genproto v0.0.0-20210909211513-a8c4777a87af/go.mod h1:eFjDcFEctNawg4eG61bRv87N7iHBWyVhJu7u1kqDUXY= 880 | google.golang.org/genproto v0.0.0-20210924002016-3dee208752a0/go.mod h1:5CzLGKJ67TSI2B9POpiiyGha0AjJvZIUgRMt1dSmuhc= 881 | google.golang.org/genproto v0.0.0-20211008145708-270636b82663/go.mod h1:5CzLGKJ67TSI2B9POpiiyGha0AjJvZIUgRMt1dSmuhc= 882 | google.golang.org/genproto v0.0.0-20211028162531-8db9c33dc351/go.mod h1:5CzLGKJ67TSI2B9POpiiyGha0AjJvZIUgRMt1dSmuhc= 883 | google.golang.org/genproto v0.0.0-20211118181313-81c1377c94b1/go.mod h1:5CzLGKJ67TSI2B9POpiiyGha0AjJvZIUgRMt1dSmuhc= 884 | google.golang.org/genproto v0.0.0-20211129164237-f09f9a12af12/go.mod h1:5CzLGKJ67TSI2B9POpiiyGha0AjJvZIUgRMt1dSmuhc= 885 | google.golang.org/genproto v0.0.0-20211203200212-54befc351ae9/go.mod h1:5CzLGKJ67TSI2B9POpiiyGha0AjJvZIUgRMt1dSmuhc= 886 | google.golang.org/genproto v0.0.0-20211206160659-862468c7d6e0/go.mod h1:5CzLGKJ67TSI2B9POpiiyGha0AjJvZIUgRMt1dSmuhc= 887 | google.golang.org/genproto v0.0.0-20211208223120-3a66f561d7aa/go.mod h1:5CzLGKJ67TSI2B9POpiiyGha0AjJvZIUgRMt1dSmuhc= 888 | google.golang.org/grpc v1.14.0/go.mod h1:yo6s7OP7yaDglbqo1J04qKzAhqBH6lvTonzMVmEdcZw= 889 | google.golang.org/grpc v1.16.0/go.mod h1:0JHn/cJsOMiMfNA9+DeHDlAU7KAAB5GDlYFpa9MZMio= 890 | google.golang.org/grpc v1.17.0/go.mod h1:6QZJwpn2B+Zp71q/5VxRsJ6NXXVCE5NRUHRo+f3cWCs= 891 | google.golang.org/grpc v1.19.0/go.mod h1:mqu4LbDTu4XGKhr4mRzUsmM4RtVoemTSY81AxZiDr8c= 892 | google.golang.org/grpc v1.20.1/go.mod h1:10oTOabMzJvdu6/UiuZezV6QK5dSlG84ov/aaiqXj38= 893 | google.golang.org/grpc v1.21.1/go.mod h1:oYelfM1adQP15Ek0mdvEgi9Df8B9CZIaU1084ijfRaM= 894 | google.golang.org/grpc v1.23.0/go.mod h1:Y5yQAOtifL1yxbo5wqy6BxZv8vAUGQwXBOALyacEbxg= 895 | google.golang.org/grpc v1.25.1/go.mod h1:c3i+UQWmh7LiEpx4sFZnkU36qjEYZ0imhYfXVyQciAY= 896 | google.golang.org/grpc v1.26.0/go.mod h1:qbnxyOmOxrQa7FizSgH+ReBfzJrCY1pSN7KXBS8abTk= 897 | google.golang.org/grpc v1.27.0/go.mod h1:qbnxyOmOxrQa7FizSgH+ReBfzJrCY1pSN7KXBS8abTk= 898 | google.golang.org/grpc v1.27.1/go.mod h1:qbnxyOmOxrQa7FizSgH+ReBfzJrCY1pSN7KXBS8abTk= 899 | google.golang.org/grpc v1.28.0/go.mod h1:rpkK4SK4GF4Ach/+MFLZUBavHOvF2JJB5uozKKal+60= 900 | google.golang.org/grpc v1.29.1/go.mod h1:itym6AZVZYACWQqET3MqgPpjcuV5QH3BxFS3IjizoKk= 901 | google.golang.org/grpc v1.30.0/go.mod h1:N36X2cJ7JwdamYAgDz+s+rVMFjt3numwzf/HckM8pak= 902 | google.golang.org/grpc v1.31.0/go.mod h1:N36X2cJ7JwdamYAgDz+s+rVMFjt3numwzf/HckM8pak= 903 | google.golang.org/grpc v1.31.1/go.mod h1:N36X2cJ7JwdamYAgDz+s+rVMFjt3numwzf/HckM8pak= 904 | google.golang.org/grpc v1.33.1/go.mod h1:fr5YgcSWrqhRRxogOsw7RzIpsmvOZ6IcH4kBYTpR3n0= 905 | google.golang.org/grpc v1.33.2/go.mod h1:JMHMWHQWaTccqQQlmk3MJZS+GWXOdAesneDmEnv2fbc= 906 | google.golang.org/grpc v1.34.0/go.mod h1:WotjhfgOW/POjDeRt8vscBtXq+2VjORFy659qA51WJ8= 907 | google.golang.org/grpc v1.35.0/go.mod h1:qjiiYl8FncCW8feJPdyg3v6XW24KsRHe+dy9BAGRRjU= 908 | google.golang.org/grpc v1.36.0/go.mod h1:qjiiYl8FncCW8feJPdyg3v6XW24KsRHe+dy9BAGRRjU= 909 | google.golang.org/grpc v1.36.1/go.mod h1:qjiiYl8FncCW8feJPdyg3v6XW24KsRHe+dy9BAGRRjU= 910 | google.golang.org/grpc v1.37.0/go.mod h1:NREThFqKR1f3iQ6oBuvc5LadQuXVGo9rkm5ZGrQdJfM= 911 | google.golang.org/grpc v1.37.1/go.mod h1:NREThFqKR1f3iQ6oBuvc5LadQuXVGo9rkm5ZGrQdJfM= 912 | google.golang.org/grpc v1.38.0/go.mod h1:NREThFqKR1f3iQ6oBuvc5LadQuXVGo9rkm5ZGrQdJfM= 913 | google.golang.org/grpc v1.39.0/go.mod h1:PImNr+rS9TWYb2O4/emRugxiyHZ5JyHW5F+RPnDzfrE= 914 | google.golang.org/grpc v1.39.1/go.mod h1:PImNr+rS9TWYb2O4/emRugxiyHZ5JyHW5F+RPnDzfrE= 915 | google.golang.org/grpc v1.40.0/go.mod h1:ogyxbiOoUXAkP+4+xa6PZSE9DZgIHtSpzjDTB9KAK34= 916 | google.golang.org/grpc v1.40.1/go.mod h1:ogyxbiOoUXAkP+4+xa6PZSE9DZgIHtSpzjDTB9KAK34= 917 | google.golang.org/grpc v1.42.0/go.mod h1:k+4IHHFw41K8+bbowsex27ge2rCb65oeWqe4jJ590SU= 918 | google.golang.org/grpc/cmd/protoc-gen-go-grpc v1.1.0/go.mod h1:6Kw0yEErY5E/yWrBtf03jp27GLLJujG4z/JK95pnjjw= 919 | google.golang.org/protobuf v0.0.0-20200109180630-ec00e32a8dfd/go.mod h1:DFci5gLYBciE7Vtevhsrf46CRTquxDuWsQurQQe4oz8= 920 | google.golang.org/protobuf v0.0.0-20200221191635-4d8936d0db64/go.mod h1:kwYJMbMJ01Woi6D6+Kah6886xMZcty6N08ah7+eCXa0= 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