diff --git a/device.go b/device.go
index 6a887ea..abb409f 100644
--- a/device.go
+++ b/device.go
@@ -79,6 +79,7 @@ func (cli *RPCClient) run() {
 		// encode gob
 		enc := gob.NewEncoder(buf)
 		cliBuffer := <-cli.FrameChan
+		log.Printf("get from source bytes: %d", len(cliBuffer.BytesArray[0]))
 		err := enc.Encode(cliBuffer.BytesArray)
 		if err != nil {
 			log.Panic(err)