datachannel: send OpenChannel message

examples/data-channels/main.go

@@ -4,6 +4,7 @@ import (
 	"bufio"
 	"encoding/base64"
 	"fmt"
+	"io"
 	"math/rand"
 	"os"
 	"sync"
@@ -27,7 +28,7 @@ func randSeq(n int) string {
 func main() {
 	reader := bufio.NewReader(os.Stdin)
 	rawSd, err := reader.ReadString('\n')
-	if err != nil {
+	if err != nil && err != io.EOF {
 		panic(err)
 	}