Use http.TimeFormat to return, S3 expects us to return in GMT not UTC

pkg/api/api_test.go

@@ -894,7 +894,7 @@ func (s *MySuite) TestDateFormat(c *C) {
 
 func verifyHeaders(c *C, header http.Header, date time.Time, size int, contentType string, etag string) {
 	// Verify date
-	c.Assert(header.Get("Last-Modified"), Equals, date.Format(time.RFC1123))
+	c.Assert(header.Get("Last-Modified"), Equals, date.Format(http.TimeFormat))
 
 	// verify size
 	c.Assert(header.Get("Content-Length"), Equals, strconv.Itoa(size))
@@ -903,7 +903,7 @@ func verifyHeaders(c *C, header http.Header, date time.Time, size int, contentTy
 	c.Assert(header.Get("Content-Type"), Equals, contentType)
 
 	// verify etag
-	c.Assert(header.Get("Etag"), Equals, etag)
+	c.Assert(header.Get("Etag"), Equals, "\""+etag+"\"")
 }
 
 func (s *MySuite) TestXMLNameNotInBucketListJson(c *C) {

pkg/api/headers.go

@@ -22,7 +22,6 @@ import (
 	"encoding/xml"
 	"net/http"
 	"strconv"
-	"time"
 
 	"github.com/minio/minio/pkg/storage/drivers"
 )
@@ -64,11 +63,11 @@ func encodeErrorResponse(response interface{}, acceptsType contentType) []byte {
 
 // Write object header
 func setObjectHeaders(w http.ResponseWriter, metadata drivers.ObjectMetadata) {
-	lastModified := metadata.Created.Format(time.RFC1123)
+	lastModified := metadata.Created.Format(http.TimeFormat)
 	// common headers
 	setCommonHeaders(w, metadata.ContentType, int(metadata.Size))
 	// object related headers
-	w.Header().Set("ETag", metadata.Md5)
+	w.Header().Set("ETag", "\""+metadata.Md5+"\"")
 	w.Header().Set("Last-Modified", lastModified)
 }