glance/releasenotes/notes/range-header-request-83cf11eebf865fb1.yaml
Dharini Chandrasekar 423f340174 Accept Range requests and set appropriate response
Currently glance v2 API incorrectly accepts ‘Content-Range’ header
for random image access and does not set response headers.
As per rfc7233, ‘Range’ requests should be accepted and ‘Content-Range’
must be returned in the response headers.

This patch enables Glance v2 API to accept the more appropriate ‘Range’
requests and sets ‘Content-Range’ response header.

For backward compatibility with pre-Pike Glance clients, the incorrect
'Content-Range' header will be accepted silently in perpetuity.
Thus this patch contains tests for 'Content-Range' in requests to
prevent regressions.

DocImpact
Implements lite-spec I5bdadde682a0c50836bd95e2a6651d6e7e18f172
Closes-Bug: #1677391

Co-Authored-By: Hemanth Makkapati <hemanth.makkapati@rackspace.com>

Change-Id: Ib7ebc792c32995751744be3f36cbc9a0c1eead2a
2017-04-05 20:40:02 +00:00

14 lines
582 B
YAML

---
fixes:
- |
Glance had been accepting the Content-Range header for GET v2/images/{image_id}/file requests,
contrary to RFC 7233.
Following RFC 7233, Glance will now:
* Accept the Range header in requests to serve partial images.
* Include a ``Content-Range`` header upon successful delivery of the requested partial content.
Please note that not all Glance storage backends support partial downloads. A Range request to a
Glance server with such a backend will result in the entire image content being delivered
despite the 206 response code.