Accept-Encoding header "br" removed when Cachepulse is enabled

Products

• ISG Proxy
• ProxySG Software - SGOS
• Advanced Secure Gateway Software - ASG

Issue/Introduction

In current SGOS branches, with cachepulse enabled, a policy trace for certain transactions will reveal that "br" is stripped from Accept-Encoding header.  This will remove Brotli compression from the transaction.

Environment

• SGOS 7.3.x
• SGOS 7.4.x

Cause

Cachepulse optimization code logic explicitly removes 'br' from Accept-Encoding header.

Resolution

As cachepulse is an older subscription that is not actively maintained, disabling the feature is the permanent workaround for these versions.

1. Connect to the ProxySG CLI.
2. Enter configuration mode: 'config t'
3. Enter the Cachepulse configuration context: 'cachepulse'
4. Disable the feature: 'disable'

Additional Information

Users may observe increased bandwidth consumption for web traffic as Brotli compression is not applied to responses.