address most of CR comments

License: MIT
Signed-off-by: Jeromy <jeromyj@gmail.com>

files/multipartfile.go

@@ -12,6 +12,8 @@ const (
 	multipartFormdataType = "multipart/form-data"
 	multipartMixedType    = "multipart/mixed"
 
+	applicationSymlink = "application/symlink"
+
 	contentTypeHeader = "Content-Type"
 )
 
@@ -31,7 +33,7 @@ func NewFileFromPart(part *multipart.Part) (File, error) {
 	}
 
 	contentType := part.Header.Get(contentTypeHeader)
-	if contentType == "symlink" {
+	if contentType == applicationSymlink {
 		out, err := ioutil.ReadAll(part)
 		if err != nil {
 			return nil, err

http/multifilereader.go

@@ -69,8 +69,7 @@ func (mfr *MultiFileReader) Read(buf []byte) (written int, err error) {
 			if s, ok := file.(*files.Symlink); ok {
 				mfr.currentFile = s
 
-				// TODO(why): this is a hack. pick a real contentType
-				contentType = "symlink"
+				contentType = "application/symlink"
 			} else if file.IsDirectory() {
 				// if file is a directory, create a multifilereader from it
 				// (using 'multipart/mixed')