Bug ID 608551: Half-closed congested SSL connections with unclean shutdown might stall.

Last Modified: Sep 13, 2023

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

Known Affected Versions:
11.6.0, 11.6.1, 12.0.0, 12.0.0 HF1, 12.1.0 HF1, 12.0.0 HF2, 12.1.0 HF2, 12.0.0 HF3, 12.0.0 HF4, 12.1.1 HF1, 12.1.1 HF2

Fixed In:
13.0.0, 12.1.2 HF1, 11.6.2, 11.5.4 HF3

Opened: Aug 02, 2016

Severity: 3-Major

Related Article: K80183225

Symptoms

Half-closed congested SSL connections with unclean shutdown might stall.

Impact

Possible stalled flow.

Conditions

If SSL egress is congested and the client FINs with no Close Notify, connection might stall as SSL does not request more egress data from HTTP.

Workaround

Use SSL client that sends clean shutdown.

Fix Information

Resolved half-closed congested SSL connections with unclean shutdown, so connections no longer stall.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips