-
Notifications
You must be signed in to change notification settings - Fork 0
/
main.go
91 lines (72 loc) · 2.04 KB
/
main.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
//go:build !js
// +build !js
package main
import (
"encoding/json"
"fmt"
"net/http"
"os"
"time"
"github.com/pion/webrtc/v3"
"github.com/pion/webrtc/v3/pkg/media"
)
func doSignaling(w http.ResponseWriter, r *http.Request) {
peerConnection, err := webrtc.NewPeerConnection(webrtc.Configuration{})
if err != nil {
panic(err)
}
peerConnection.OnICEConnectionStateChange(func(connectionState webrtc.ICEConnectionState) {
fmt.Printf("ICE Connection State has changed: %s\n", connectionState.String())
})
audioTrack, err := webrtc.NewTrackLocalStaticSample(webrtc.RTPCodecCapability{MimeType: webrtc.MimeTypePCMU}, "audio", "pion")
if err != nil {
panic(err)
} else if _, err := peerConnection.AddTrack(audioTrack); err != nil {
panic(err)
}
go sendAudioFile(audioTrack)
var offer webrtc.SessionDescription
if err = json.NewDecoder(r.Body).Decode(&offer); err != nil {
panic(err)
}
if err = peerConnection.SetRemoteDescription(offer); err != nil {
panic(err)
}
gatherComplete := webrtc.GatheringCompletePromise(peerConnection)
answer, err := peerConnection.CreateAnswer(nil)
if err != nil {
panic(err)
} else if err = peerConnection.SetLocalDescription(answer); err != nil {
panic(err)
}
<-gatherComplete
response, err := json.Marshal(*peerConnection.LocalDescription())
if err != nil {
panic(err)
}
w.Header().Set("Content-Type", "application/json")
if _, err := w.Write(response); err != nil {
panic(err)
}
}
func sendAudioFile(track *webrtc.TrackLocalStaticSample) {
buff := make([]byte, 1024)
file, err := os.Open("ulaw.raw")
if err != nil {
panic(err)
}
for ; true; <-time.NewTicker(time.Millisecond * 20).C {
if _, err := file.Read(buff); err != nil {
panic(err)
}
if err = track.WriteSample(media.Sample{Data: buff, Duration: time.Millisecond * 20}); err != nil {
panic(err)
}
}
}
func main() {
http.Handle("/", http.FileServer(http.Dir(".")))
http.HandleFunc("/doSignaling", doSignaling)
fmt.Println("Open http://localhost:8080 to access this demo")
panic(http.ListenAndServe(":8080", nil))
}