Last Modified: Apr 28, 2025
Affected Product(s):
BIG-IP LTM
Known Affected Versions:
13.0.0, 13.0.0 HF1, 13.0.0 HF2, 13.0.0 HF3, 13.0.1
Fixed In:
13.1.0
Opened: May 25, 2017 Severity: 3-Major Related Article:
K82565029
The HTTP iRule commands behave differently if they return only a single result. They will return a Tcl string rather than a Tcl list containing a string.
A string is returned rather than a list. This may affect Tcl code that expects the result to be a list, leading to incorrect behavior.
One or more of the following HTTP iRule commands are used, and the conditions exist such that a single result is returned: HTTP::cookie names HTTP::cookie attribute names HTTP::header names HTTP::header values
If the result is not a list, this can be detected in a Tcl script, and the result handled as a special case.
HTTP iRule commands that return a Tcl list will do so in all cases.