Bug ID 1016113: HTTP response-chunking 'sustain' profile option may not rechunk responses when also using a web acceleration profile.

Last Modified: Nov 07, 2022

Bug Tracker

Affected Product:  See more info
BIG-IP LTM(all modules)

Known Affected Versions:
15.0.0, 15.0.1, 15.0.1.1, 15.0.1.2, 15.0.1.3, 15.0.1.4, 15.1.0, 15.1.0.1, 15.1.0.2, 15.1.0.3, 15.1.0.4, 15.1.0.5, 15.1.1, 15.1.2, 15.1.2.1, 15.1.3, 15.1.3.1, 16.0.0, 16.0.0.1, 16.0.1, 16.0.1.1, 16.0.1.2, 16.1.0, 16.1.1

Fixed In:
17.0.0, 16.1.2, 15.1.4

Opened: May 04, 2021
Severity: 3-Major

Symptoms

Configurations containing HTTP response-chunking 'sustain' and a Web Acceleration profile do not rechunk payload regardless of whether the web server responds with a chunked response.

Impact

The BIG-IP response is not chunked, regardless of whether the associated web server responds with a chunked payload when the Web Acceleration is utilized.

Conditions

-- Incoming response payload to the BIG-IP system is chunked. -- HTTP profile is configured with response-chunking 'sustain'. -- Web Acceleration profile also configured on the same virtual server.

Workaround

For a chunked response to be delivered to the client, apply the iRule command 'HTTP::rechunk' to responses when a Web Acceleration profile is used.

Fix Information

The BIG-IP response is chunked appropriately when a Web Acceleration profile is used.

Behavior Change