Invalid Content-Range in multipart upload

[Rafael Dantas Justo]

We are sending the Content-Range header without the bytes label. This is causing the error:

InvalidParameterValueException: Invalid Content-Range: 0-4194304/1554187834

[Rafael Dantas Justo]

This should solve the problem:

diff --git a/internal/cloud/aws.go b/internal/cloud/aws.go
index 58e6789..9b3b411 100644
--- a/internal/cloud/aws.go
+++ b/internal/cloud/aws.go
@@ -187,7 +187,7 @@ func (a *AWSCloud) sendBig(archive *os.File, archiveSize int64) (Backup, error)
                        AccountId: aws.String(a.AccountID),
                        Body:      body,
                        Checksum:  aws.String(hex.EncodeToString(hash.TreeHash)),
-                       Range:     aws.String(fmt.Sprintf("%d-%d/%d", offset, offset+int64(n), archiveSize)),
+                       Range:     aws.String(fmt.Sprintf("bytes %d-%d/%d", offset, offset+int64(n)-1, archiveSize)),
                        UploadId:  initiateMultipartUploadOutput.UploadId,
                        VaultName: aws.String(a.VaultName),
                }

We need also to change the offset range (offset+int64(n)-1) to avoid the error:

InvalidParameterValueException: Content-Range: bytes 0-4194304/1554187834 is incompatible with Content-Length: 4194304

But maybe something is wrong, because the checksum from the uploaded archive doesn't match with the local TAR.

[Rafael Dantas Justo]

That's why we need to fix the offset range:

https://tools.ietf.org/html/rfc2616#section-14.16

   Unlike byte-ranges-specifier values (see section 14.35.1), a byte-
   range-resp-spec MUST only specify one range, and MUST contain
   absolute byte positions for both the first and last byte of the
   range.

   Examples of byte-content-range-spec values, assuming that the entity
   contains a total of 1234 bytes:

      . The first 500 bytes:
       bytes 0-499/1234

      . The second 500 bytes:
       bytes 500-999/1234

      . All except for the first 500 bytes:
       bytes 500-1233/1234

      . The last 500 bytes:
       bytes 734-1233/1234