Files
webrtc/examples/data-channels/main.go
backkem bf422e0c0a API: Avoid exposing pkg/ice
OnICEConnectionStateChange now return a ICEConnectionState instead of
ice.ConnectionState.
Resolves #422
2019-02-20 20:47:34 +01:00

86 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"
)
func main() {
// Everything below is the pion-WebRTC API! Thanks for using it ❤️.
// Prepare the configuration
config := webrtc.Configuration{
ICEServers: []webrtc.ICEServer{
{
URLs: []string{"stun:stun.l.google.com:19302"},
},
},
}
// Create a new RTCPeerConnection
peerConnection, err := webrtc.NewPeerConnection(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 webrtc.ICEConnectionState) {
fmt.Printf("ICE Connection State has changed: %s\n", connectionState.String())
})
// Register data channel creation handling
peerConnection.OnDataChannel(func(d *webrtc.DataChannel) {
fmt.Printf("New DataChannel %s %d\n", d.Label, d.ID)
// 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 range time.NewTicker(5 * time.Second).C {
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
offer := webrtc.SessionDescription{}
util.Decode(util.MustReadStdin(), &offer)
// Set the remote SessionDescription
err = peerConnection.SetRemoteDescription(offer)
util.Check(err)
// Create an answer
answer, err := peerConnection.CreateAnswer(nil)
util.Check(err)
// Sets the LocalDescription, and starts our UDP listeners
err = peerConnection.SetLocalDescription(answer)
util.Check(err)
// Output the answer in base64 so we can paste it in browser
fmt.Println(util.Encode(answer))
// Block forever
select {}
}