Bug ID 1132425: Change in behavior for the WS_REQUEST event when used in iRule

Last Modified: Apr 28, 2025

Affected Product(s):
BIG-IP LTM(all modules)

Known Affected Versions:
16.1.3, 16.1.3.1, 16.1.3.2, 16.1.3.3, 16.1.3.4, 16.1.3.5, 16.1.4, 16.1.4.1, 16.1.4.2, 16.1.4.3, 16.1.5, 16.1.5.1, 16.1.5.2

Opened: Jul 27, 2022

Severity: 3-Major

Symptoms

WS_REQUEST event should only be triggered when the following headers are present in the HTTP request: ------- Upgrade: websocket Connection: Upgrade Sec-Websocket-Key ------- But in latest versions like 16.1.3 this event is triggered for every HTTP request.

Impact

Unnecessary events will be triggering and extra processing is required.

Conditions

-- Configure an iRule with WS_REQUEST event. -- Include the rule in the Virtual server. -- Use the software version 16.1.3

Workaround

None

Fix Information

None

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips