mirror of
https://github.com/pion/webrtc.git
synced 2025-11-02 19:44:01 +08:00
89 lines
2.5 KiB
Go
89 lines
2.5 KiB
Go
package main
|
|
|
|
import (
|
|
"fmt"
|
|
"time"
|
|
|
|
"github.com/pions/webrtc"
|
|
"github.com/pions/webrtc/examples/util"
|
|
"github.com/pions/webrtc/pkg/datachannel"
|
|
"github.com/pions/webrtc/pkg/ice"
|
|
)
|
|
|
|
func main() {
|
|
// Everything below is the pion-WebRTC API! Thanks for using it ❤️.
|
|
|
|
// Prepare the configuration
|
|
config := webrtc.RTCConfiguration{
|
|
IceServers: []webrtc.RTCIceServer{
|
|
{
|
|
URLs: []string{"stun:stun.l.google.com:19302"},
|
|
},
|
|
},
|
|
}
|
|
|
|
// Create a new RTCPeerConnection
|
|
peerConnection, err := webrtc.New(config)
|
|
util.Check(err)
|
|
|
|
// Set the handler for ICE connection state
|
|
// This will notify you when the peer has connected/disconnected
|
|
peerConnection.OnICEConnectionStateChange = func(connectionState ice.ConnectionState) {
|
|
fmt.Printf("ICE Connection State has changed: %s\n", connectionState.String())
|
|
}
|
|
|
|
// Register data channel creation handling
|
|
peerConnection.OnDataChannel = func(d *webrtc.RTCDataChannel) {
|
|
fmt.Printf("New DataChannel %s %d\n", d.Label, d.ID)
|
|
|
|
d.Lock()
|
|
defer d.Unlock()
|
|
|
|
// Register channel opening handling
|
|
d.OnOpen = func() {
|
|
fmt.Printf("Data channel '%s'-'%d' open. Random messages will now be sent to any connected DataChannels every 5 seconds\n", d.Label, d.ID)
|
|
for {
|
|
time.Sleep(5 * time.Second)
|
|
message := util.RandSeq(15)
|
|
fmt.Printf("Sending %s \n", message)
|
|
|
|
err := d.Send(datachannel.PayloadString{Data: []byte(message)})
|
|
util.Check(err)
|
|
}
|
|
}
|
|
|
|
// Register message handling
|
|
d.Onmessage = func(payload datachannel.Payload) {
|
|
switch p := payload.(type) {
|
|
case *datachannel.PayloadString:
|
|
fmt.Printf("Message '%s' from DataChannel '%s' payload '%s'\n", p.PayloadType().String(), d.Label, string(p.Data))
|
|
case *datachannel.PayloadBinary:
|
|
fmt.Printf("Message '%s' from DataChannel '%s' payload '% 02x'\n", p.PayloadType().String(), d.Label, p.Data)
|
|
default:
|
|
fmt.Printf("Message '%s' from DataChannel '%s' no payload \n", p.PayloadType().String(), d.Label)
|
|
}
|
|
}
|
|
}
|
|
|
|
// Wait for the offer to be pasted
|
|
sd := util.Decode(util.MustReadStdin())
|
|
|
|
// Set the remote SessionDescription
|
|
offer := webrtc.RTCSessionDescription{
|
|
Type: webrtc.RTCSdpTypeOffer,
|
|
Sdp: string(sd),
|
|
}
|
|
err = peerConnection.SetRemoteDescription(offer)
|
|
util.Check(err)
|
|
|
|
// Sets the LocalDescription, and starts our UDP listeners
|
|
answer, err := peerConnection.CreateAnswer(nil)
|
|
util.Check(err)
|
|
|
|
// Output the answer in base64 so we can paste it in browser
|
|
fmt.Println(util.Encode(answer.Sdp))
|
|
|
|
// Block forever
|
|
select {}
|
|
}
|