From 984280ba37a8539f4134b9e1ae17cacd128c8f87 Mon Sep 17 00:00:00 2001
From: iamqizhao <toqizhao@gmail.com>
Date: Thu, 15 Oct 2015 13:22:54 -0700
Subject: [PATCH] change the type of length

---
 rpc_util.go | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/rpc_util.go b/rpc_util.go
index 5394034e..d86b2dee 100644
--- a/rpc_util.go
+++ b/rpc_util.go
@@ -164,7 +164,7 @@ func encode(c Codec, msg interface{}, pf payloadFormat) ([]byte, error) {
 	// Write message into the fixed header.
 	buf.WriteByte(uint8(pf))
 	var b []byte
-	var length uint32
+	var length uint
 	if msg != nil {
 		var err error
 		// TODO(zhaoq): optimize to reduce memory alloc and copying.
@@ -172,13 +172,13 @@ func encode(c Codec, msg interface{}, pf payloadFormat) ([]byte, error) {
 		if err != nil {
 			return nil, err
 		}
-		length = uint32(len(b))
+		length = uint(len(b))
 	}
 	if length > math.MaxUint32 {
 		return nil, Errorf(codes.InvalidArgument, "grpc: message too large (%d bytes)", length)
 	}
 	var szHdr [4]byte
-	binary.BigEndian.PutUint32(szHdr[:], length)
+	binary.BigEndian.PutUint32(szHdr[:], uint32(length))
 	buf.Write(szHdr[:])
 	buf.Write(b)
 	return buf.Bytes(), nil