Bug ID 549494: ReqLog Profile RESPONSE_* variables return data when used in request logs.

Last Modified: Mar 12, 2019

Bug Tracker

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

Known Affected Versions:
11.0.0, 11.1.0, 11.2.0, 11.2.1, 11.3.0, 11.4.0, 11.4.1, 11.5.0, 11.5.1, 11.5.1 HF1, 11.5.1 HF10, 11.5.1 HF11, 11.5.1 HF2, 11.5.1 HF3, 11.5.1 HF4, 11.5.1 HF5, 11.5.1 HF6, 11.5.1 HF7, 11.5.1 HF8, 11.5.1 HF9, 11.5.2, 11.5.2 HF1, 11.5.3, 11.5.3 HF1, 11.5.3 HF2, 11.5.4, 11.5.4 HF1, 11.5.4 HF2, 11.5.4 HF3, 11.5.4 HF4, 11.5.5, 11.5.6, 11.5.7, 11.5.8, 11.5.9, 11.6.0, 11.6.0 HF1, 11.6.0 HF2, 11.6.0 HF3, 11.6.0 HF4, 11.6.0 HF5, 11.6.0 HF6, 11.6.0 HF7, 11.6.0 HF8, 11.6.1, 11.6.1 HF1, 11.6.1 HF2, 11.6.2, 11.6.2 HF1, 11.6.3, 11.6.3.1, 11.6.3.2, 11.6.3.3, 11.6.3.4, 12.0.0, 12.0.0 HF1, 12.0.0 HF2, 12.0.0 HF3, 12.0.0 HF4

Fixed In:
12.1.0

Opened: Sep 30, 2015
Severity: 5-Cosmetic

Symptoms

When $RESPONSE_SIZE, $RESPONSE_MSECS, and/or $RESPONSE_USECS are used in ReqLog profile request-log templates, they return valid data rather than failing and returning the user-specified default value. -- $RESPONSE_SIZE returns zero, because no response has returned yet. -- $RESPONSE_USECS may return small numbers measuring the overhead of proxying the request (and applying iRules, etc.). -- $RESPONSE_MSECS generally returns zero unless user iRules have added at least a millisecond of proxy delay.

Impact

Configurations that have used these variables in request log templates might not work as expected.

Conditions

$RESPONSE_SIZE, $RESPONSE_MSECS, and/or $RESPONSE_USECS are used in ReqLog profile request-log templates.

Workaround

Do not use the $RESPONSE_SIZE, $RESPONSE_MSECS, and/or $RESPONSE_USECS variables in ReqLog request templates.

Fix Information

The $RESPONSE_SIZE, $RESPONSE_MSECS, and/or $RESPONSE_USECS variables fail when used in request template, as it should. Failed substitutions evaluate to either empty strings (in the case of bare variables, e.g., $RESPONSE_SIZE) or the user-provided default text for the field (e.g., ${RESPONSE_SIZE:dummy_value} inserts the string 'dummy_value' in the request log).

Behavior Change