diff --git a/client/client.go b/client/client.go
index b2a8c00..55ca858 100644
--- a/client/client.go
+++ b/client/client.go
@@ -104,6 +104,7 @@ ReadLoop:
 		}
 		if len(leftdata) > 0 { // some data left for processing
 			data = append(leftdata, data...)
+			leftdata = nil
 		}
 		for {
 			l := len(data)
diff --git a/client/common.go b/client/common.go
index ad47936..e520bf0 100644
--- a/client/common.go
+++ b/client/common.go
@@ -5,7 +5,7 @@ const (
 	// queue size
 	queueSize = 8
 	// read buffer size
-	bufferSize = 1024
+	bufferSize = 8192
 	// min packet length
 	minPacketLength = 12