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Use shared media conn code in test client. #20

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Use shared media conn code in test client. #20

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245 changes: 129 additions & 116 deletions test/client/main.go
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Original file line number Diff line number Diff line change
Expand Up @@ -15,8 +15,11 @@
package main

import (
"encoding/binary"
"flag"
"fmt"
"io"
"log/slog"
"math/rand"
"net"
"os"
Expand All @@ -29,9 +32,12 @@ import (
"github.com/emiago/sipgo"
"github.com/emiago/sipgo/sip"
"github.com/icholy/digest"
"github.com/livekit/sip/pkg/media/ulaw"
"github.com/pion/rtp"
"github.com/pion/sdp/v2"

"github.com/livekit/sip/pkg/media"
lkrtp "github.com/livekit/sip/pkg/media/rtp"
"github.com/livekit/sip/pkg/media/ulaw"
lksip "github.com/livekit/sip/pkg/sip"
)

var (
Expand All @@ -45,72 +51,73 @@ var (
filePathSave = flag.String("save", "save.mkv", "")
)

func startMediaListener() *net.UDPConn {
conn, err := net.ListenUDP("udp", &net.UDPAddr{
Port: 0,
IP: net.ParseIP("0.0.0.0"),
})
func NewMKVWriter(w io.WriteCloser) (*MKVWriter, error) {
ws, err := webm.NewSimpleBlockWriter(w,
[]webm.TrackEntry{{
Name: "Audio",
TrackNumber: 1,
TrackUID: 12345,
CodecID: "A_PCM/INT/LIT",
TrackType: 2,
DefaultDuration: 20000000,
Audio: &webm.Audio{
SamplingFrequency: 8000.0,
Channels: 1,
},
}},
)
if err != nil {
panic(err)
return nil, err
}
return &MKVWriter{w: w, ws: ws[0]}, nil
}

go func() {
var (
p rtp.Packet
audioTimestamp int64
)
buf := make([]byte, 1500)

w, err := os.OpenFile(*filePathSave, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0o600)
if err != nil {
panic(err)
}

ws, err := webm.NewSimpleBlockWriter(w,
[]webm.TrackEntry{
{
Name: "Audio",
TrackNumber: 1,
TrackUID: 12345,
CodecID: "A_PCM/INT/LIT",
TrackType: 2,
DefaultDuration: 20000000,
Audio: &webm.Audio{
SamplingFrequency: 8000.0,
Channels: 1,
},
},
})
if err != nil {
panic(err)
}

for {
n, _, err := conn.ReadFromUDP(buf)
if err != nil {
return
}
type MKVWriter struct {
w io.WriteCloser
ws webm.BlockWriteCloser
audioTimestamp int64
buf []byte
}

p = rtp.Packet{}
if err := p.Unmarshal(buf[:n]); err != nil {
continue
}
func (w *MKVWriter) WriteSample(in media.PCM16Sample) error {
w.audioTimestamp += 20
if sz := 2 * len(in); cap(w.buf) < sz {
w.buf = make([]byte, sz)
} else {
w.buf = w.buf[:sz]
}
for i, v := range in {
binary.LittleEndian.PutUint16(w.buf[2*i:], uint16(v))
}
_, err := w.ws.Write(true, w.audioTimestamp, w.buf)
return err
}

audioTimestamp += 20
decoded := ulaw.DecodeUlaw(p.Payload)
out := []byte{}
for _, sample := range decoded {
out = append(out, byte(sample&0xff))
out = append(out, byte(sample>>8))
}
func (w *MKVWriter) Close() error {
var last error
if err := w.ws.Close(); err != nil {
last = err
}
if err := w.w.Close(); err != nil {
last = err
}
return last
}

if _, err := ws[0].Write(true, audioTimestamp, out); err != nil {
panic(err)
}
}
}()
func saveToFile(conn *lksip.MediaConn, path string) func() error {
f, err := os.Create(path)
if err != nil {
panic(err)
}
wr, err := NewMKVWriter(f)
if err != nil {
f.Close()
panic(err)
}

return conn
law := ulaw.Decode(wr)
conn.OnRTP(lkrtp.NewMediaStreamIn(law))
return wr.Close
}

func getLocalIP() string {
Expand All @@ -130,15 +137,18 @@ func getLocalIP() string {
}

func getResponse(tx sip.ClientTransaction) *sip.Response {
select {
case <-tx.Done():
panic("transaction failed to complete")
case res := <-tx.Responses():
if res.StatusCode == 100 || res.StatusCode == 180 || res.StatusCode == 183 {
return getResponse(tx)
for {
select {
case <-tx.Done():
panic("transaction failed to complete")
case res := <-tx.Responses():
switch res.StatusCode {
default:
return res
case 100, 180, 183:
slog.With("status", res.StatusCode).Info(res.Reason)
}
}

return res
}
}

Expand All @@ -162,23 +172,23 @@ func createOffer(port int) ([]byte, error) {
Address: &sdp.Address{Address: getLocalIP()},
},
TimeDescriptions: []sdp.TimeDescription{
sdp.TimeDescription{
{
Timing: sdp.Timing{
StartTime: 0,
StopTime: 0,
},
},
},
MediaDescriptions: []*sdp.MediaDescription{
&sdp.MediaDescription{
{
MediaName: sdp.MediaName{
Media: "audio",
Port: sdp.RangedPort{Value: port},
Protos: []string{"RTP", "AVP"},
Formats: []string{"0"},
},
Attributes: []sdp.Attribute{
sdp.Attribute{Key: "rtpmap", Value: "0 PCMU/8000"},
{Key: "rtpmap", Value: "0 PCMU/8000"},
},
},
},
Expand All @@ -196,9 +206,7 @@ func parseAnswer(in []byte) (string, int) {
return offer.ConnectionInformation.Address.Address, offer.MediaDescriptions[0].MediaName.Port.Value
}

func sendAudioPackets(conn *net.UDPConn, body []byte) {
ip, port := parseAnswer(body)

func sendAudioPackets(conn *lksip.MediaConn) {
r, err := os.Open(*filePathPlay)
if err != nil {
panic(err)
Expand All @@ -213,68 +221,49 @@ func sendAudioPackets(conn *net.UDPConn, body []byte) {
panic(err)
}

audioFrames := [][]byte{}
var audioFrames [][]byte
for _, cluster := range ret.Segment.Cluster {
for _, block := range cluster.SimpleBlock {
audioFrames = append(audioFrames, block.Data...)
}
}

i := 0
rtpPkt := &rtp.Packet{
Header: rtp.Header{
Version: 2,
SSRC: 5000,
},
}
s := lkrtp.NewMediaStreamOut[ulaw.Sample](conn, 160)

dstAddr, err := net.ResolveUDPAddr("udp4", fmt.Sprintf("%s:%d", ip, port))
if err != nil {
panic(err)
}

for range time.NewTicker(20 * time.Millisecond).C {
tick := time.NewTicker(20 * time.Millisecond)
defer tick.Stop()
for range tick.C {
if i >= len(audioFrames) {
break
}

rtpPkt.Payload = audioFrames[i]

raw, err := rtpPkt.Marshal()
if err != nil {
panic(err)
}

if _, err = conn.WriteTo(raw, dstAddr); err != nil {
if err = s.WriteSample(audioFrames[i]); err != nil {
return
}

rtpPkt.Header.Timestamp += 160
rtpPkt.Header.SequenceNumber += 1
i++
}
}

func attemptInvite(sipClient *sipgo.Client, offer []byte, authorizationHeaderValue string) (*sip.Request, *sip.Response) {
inviteRecipent := &sip.Uri{User: *to, Host: *sipUri}
inviteRequest := sip.NewRequest(sip.INVITE, inviteRecipent)
inviteRequest.SetDestination(*sipServer)
inviteRequest.SetBody(offer)
inviteRequest.AppendHeader(sip.NewHeader("Content-Type", "application/sdp"))
inviteRequest.AppendHeader(sip.NewHeader("Contact", fmt.Sprintf("<sip:livekit@%s:5060>", getLocalIP())))
inviteRequest.AppendHeader(sip.NewHeader("Allow", "INVITE, ACK, CANCEL, BYE, NOTIFY, REFER, MESSAGE, OPTIONS, INFO, SUBSCRIBE"))
req := sip.NewRequest(sip.INVITE, inviteRecipent)
req.SetDestination(*sipServer)
req.SetBody(offer)
req.AppendHeader(sip.NewHeader("Content-Type", "application/sdp"))
req.AppendHeader(sip.NewHeader("Contact", fmt.Sprintf("<sip:livekit@%s:5060>", getLocalIP())))
req.AppendHeader(sip.NewHeader("Allow", "INVITE, ACK, CANCEL, BYE, NOTIFY, REFER, MESSAGE, OPTIONS, INFO, SUBSCRIBE"))

if authorizationHeaderValue != "" {
inviteRequest.AppendHeader(sip.NewHeader("Proxy-Authorization", authorizationHeaderValue))
req.AppendHeader(sip.NewHeader("Proxy-Authorization", authorizationHeaderValue))
}

tx, err := sipClient.TransactionRequest(inviteRequest)
tx, err := sipClient.TransactionRequest(req)
if err != nil {
panic(err)
}
defer tx.Terminate()

return inviteRequest, getResponse(tx)
return req, getResponse(tx)
}

func main() {
Expand All @@ -284,15 +273,27 @@ func main() {
*sipServer = getLocalIP() + ":5060"
}

mediaConn := startMediaListener()
offer, err := createOffer(mediaConn.LocalAddr().(*net.UDPAddr).Port)
mediaConn := lksip.NewMediaConn()
if *filePathSave != "" {
saveDone := saveToFile(mediaConn, *filePathSave)
defer func() {
if err := saveDone(); err != nil {
slog.Error("cannot save the file", err)
}
}()
}
if err := mediaConn.Start(0, 0, ""); err != nil {
panic(err)
}
defer mediaConn.Close()
slog.With("port", mediaConn.LocalAddr().Port).Info("media listener started")

offer, err := createOffer(mediaConn.LocalAddr().Port)
if err != nil {
panic(err)
}

ua, err := sipgo.NewUA(
sipgo.WithUserAgent(*from),
)
ua, err := sipgo.NewUA()
if err != nil {
panic(err)
}
Expand All @@ -308,7 +309,11 @@ func main() {
inviteRequest *sip.Request
)

for {
slog.Info("sending invite")
for try := 1; ; try++ {
if try > 1 {
slog.With("attempt", try).Info("invite attempt")
}
inviteRequest, inviteResponse = attemptInvite(sipClient, offer, authorizationHeaderValue)

if inviteResponse.StatusCode == 407 {
Expand Down Expand Up @@ -343,6 +348,7 @@ func main() {

break
}
slog.Info("invite success")

if contactHeader, ok := inviteResponse.Contact(); ok {
inviteRequest.Recipient = &contactHeader.Address
Expand Down Expand Up @@ -379,7 +385,14 @@ func main() {
byeSent.Store(true)
}()

sendAudioPackets(mediaConn, inviteResponse.Body())
ip, port := parseAnswer(inviteResponse.Body())
dstAddr, err := net.ResolveUDPAddr("udp4", fmt.Sprintf("%s:%d", ip, port))
if err != nil {
panic(err)
}
mediaConn.SetDestAddr(dstAddr)

sendAudioPackets(mediaConn)
if !byeSent.Load() {
sendBye()
}
Expand Down
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