How we built it

Fetch API: streaming response body

Addition of the response.body property to the Fetch API. response.body is a ReadableStream from the Streams Standard.


In the future response.body will be upgraded to a ReadableByteStream. This change should be backward-compatible since the ReadableByteStream API is a superset of ReadableStream.




Working draft or equivalent

Status in Chromium

Enabled by default (launch bug) in:

  • Chrome for desktop release 43
  • Chrome for Android release 43
  • Android WebView release 43
  • Opera release 30
  • Opera for Android release 30

Consensus & Standardization

  • Public support
  • No public signals
  • No public signals
  • Strongly positive


Last updated on 2015-10-06