add md5 header when UploadData to replication in ReplicatedWrite (#3881)

weed/operation/upload_content.go

@@ -30,6 +30,7 @@ type UploadOption struct {
 	PairMap           map[string]string
 	Jwt               security.EncodedJwt
 	RetryForever      bool
+	Md5               string
 }
 
 type UploadResult struct {
@@ -254,6 +255,7 @@ func doUploadData(data []byte, option *UploadOption) (uploadResult *UploadResult
 			MimeType:          option.MimeType,
 			PairMap:           option.PairMap,
 			Jwt:               option.Jwt,
+			Md5:               option.Md5,
 		})
 		if uploadResult == nil {
 			return
@@ -284,6 +286,9 @@ func upload_content(fillBufferFunction func(w io.Writer) error, originalDataSize
 	if option.IsInputCompressed {
 		h.Set("Content-Encoding", "gzip")
 	}
+	if option.Md5 != "" {
+		h.Set("Content-MD5", option.Md5)
+	}
 
 	file_writer, cp_err := body_writer.CreatePart(h)
 	if cp_err != nil {