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example: data-channels-create

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This commit is contained in:
backkem
2018-08-12 23:24:02 +02:00
committed by Sean DuBois
parent 8d6e30ec87
commit 168bf78504
3 changed files with 67 additions and 52 deletions
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60
examples/data-channels-create/main.go
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@@ -25,20 +25,6 @@ func randSeq(n int) string {
}
func main() {
reader := bufio.NewReader(os.Stdin)
rawSd, err := reader.ReadString('\n')
if err != nil && err != io.EOF {
panic(err)
}
fmt.Println("")
sd, err := base64.StdEncoding.DecodeString(rawSd)
if err != nil {
panic(err)
}
/* Everything below is the pion-WebRTC API, thanks for using it! */
// Create a new RTCPeerConnection
peerConnection, err := webrtc.New(webrtc.RTCConfiguration{
ICEServers: []webrtc.RTCICEServer{
@@ -57,8 +43,6 @@ func main() {
fmt.Printf("Connection State has changed %s \n", connectionState.String())
}
// TODO: We have to send the offer otherwise it's empty.
d, err := peerConnection.CreateDataChannel("data", nil)
if err != nil {
panic(err)
@@ -79,23 +63,28 @@ func main() {
}
d.Unlock()
// Set the remote SessionDescription
offer := webrtc.RTCSessionDescription{
Type: webrtc.RTCSdpTypeOffer,
Sdp: string(sd),
}
if err := peerConnection.SetRemoteDescription(offer); err != nil {
panic(err)
}
// Sets the LocalDescription, and starts our UDP listeners
answer, err := peerConnection.CreateAnswer(nil)
offer, err := peerConnection.CreateOffer(nil)
if err != nil {
panic(err)
}
/* Signaling via STDIN */
// Get the LocalDescription and take it to base64 so we can paste in browser
fmt.Println(base64.StdEncoding.EncodeToString([]byte(answer.Sdp)))
fmt.Println(base64.StdEncoding.EncodeToString([]byte(offer.Sdp)))
sd := mustReadStdin()
/* --- */
// Set the remote SessionDescription
answer := webrtc.RTCSessionDescription{
Type: webrtc.RTCSdpTypeAnswer,
Sdp: sd,
}
if err := peerConnection.SetRemoteDescription(answer); err != nil {
panic(err)
}
fmt.Println("Random messages will now be sent to any connected DataChannels every 5 seconds")
for {
time.Sleep(5 * time.Second)
@@ -108,3 +97,18 @@ func main() {
}
}
}
func mustReadStdin() string {
reader := bufio.NewReader(os.Stdin)
rawSd, err := reader.ReadString('\n')
if err != nil && err != io.EOF {
panic(err)
}
fmt.Println("")
sd, err := base64.StdEncoding.DecodeString(rawSd)
if err != nil {
panic(err)
}
return string(sd)
}