ECS 3.6.2 Data Access Guide

Reading multiple byte ranges within an object

You can use ECS extensions to the Swift protocol to read multiple byte ranges within an object.

Reading multiple parts of an object is very useful in many cases. For example, to get several video parts. On Swift or other Swift compatible platforms, it is necessary to send a different request for each part

To read two specific byte ranges within the object named object1, you issue the following GET request for Range: bytes==4-8,41-44. The read response is the words quick and lazy.

GET /container1/object1 HTTP/1.1
Date: Mon, 12 Mar 2018 20:51:55 -0000
x-emc-namespace: emc
Range: bytes==4-8,41-44
Content-Type: application/octet-stream
Authorization: AWS wuser1:/UQpdxNqZtyDkzGbK169GzhZmt4=
Accept-Encoding: gzip, deflate, compress
 
HTTP/1.1 206 Partial Content
Date: Mon, 12 Mar 2018 20:51:55 GMT
Content-Type: multipart/byteranges;boundary=bound04acf7f0ae3ccc
Last-Modified: Mon, 12 Mar 2018 20:51:41 GMT
Content-Length: 230
 
--bound04acf7f0ae3ccc
Content-Type: application/octet-stream
Content-Range: bytes 4-8/50
quick
--bound04acf7f0ae3ccc
Content-Type: application/octet-stream
Content-Range: bytes 41-44/50
lazy
--bound04acf7f0ae3ccc--