From 51866fbd34b01574090365a02d8480093174f076 Mon Sep 17 00:00:00 2001
From: Stefan Breunig <stefan-github@yrden.de>
Date: Wed, 5 Jul 2017 18:51:04 +0200
Subject: [PATCH] drive: add missing seek to start on retries of chunked
 uploads

follow up to ee13bc67756213ea488f3cf3dc320af12f57989b
---
 drive/upload.go | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drive/upload.go b/drive/upload.go
index 6a9d4f420..9c0032462 100644
--- a/drive/upload.go
+++ b/drive/upload.go
@@ -157,6 +157,7 @@ func (rx *resumableUpload) transferStatus() (start int64, err error) {
 
 // Transfer a chunk - caller must call googleapi.CloseBody(res) if err == nil || res != nil
 func (rx *resumableUpload) transferChunk(start int64, chunk io.ReadSeeker, chunkSize int64) (int, error) {
+	_, _ = chunk.Seek(0, 0)
 	req := rx.makeRequest(start, chunk, chunkSize)
 	res, err := rx.f.client.Do(req)
 	if err != nil {