gistfile1.txt

diff --git a/examples/data-channels/main.go b/examples/data-channels/main.go
index 4df8065..fd438d7 100644
--- a/examples/data-channels/main.go
+++ b/examples/data-channels/main.go
@@ -15,9 +15,12 @@ func main() {
 	config := webrtc.Configuration{
 		ICEServers: []webrtc.ICEServer{
 			{
-				URLs: []string{"stun:stun.l.google.com:19302"},
+				URLs:       []string{"turn:localhost"},
+				Username:   "a",
+				Credential: "b",
 			},
 		},
+		ICETransportPolicy: webrtc.ICETransportPolicyRelay,
 	}
 
 	// Create a new RTCPeerConnection