Bug ID 1004897: 'Decompression' is logged instead of 'Max Headers Exceeded' GoAway reason

Last Modified: Feb 07, 2024

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

Known Affected Versions:
12.1.6, 13.1.3.6, 13.1.4, 13.1.4.1, 13.1.5, 13.1.5.1, 14.1.0, 14.1.0.1, 14.1.0.2, 14.1.0.3, 14.1.0.5, 14.1.0.6, 14.1.2, 14.1.2.1, 14.1.2.2, 14.1.2.3, 14.1.2.4, 14.1.2.5, 14.1.2.6, 14.1.2.7, 14.1.2.8, 14.1.3, 14.1.3.1, 14.1.4, 14.1.4.1, 14.1.4.2, 14.1.4.3, 15.1.0, 15.1.0.1, 15.1.0.2, 15.1.0.3, 15.1.0.4, 15.1.0.5, 15.1.1, 15.1.2, 15.1.2.1, 15.1.3, 15.1.3.1, 15.1.4, 15.1.4.1, 15.1.5, 15.1.5.1, 15.1.6, 16.0.0, 16.0.0.1, 16.0.1, 16.0.1.1, 16.0.1.2

Fixed In:
17.0.0, 16.1.2.2, 15.1.6.1, 14.1.4.4

Opened: Mar 24, 2021

Severity: 3-Major

Symptoms

In HTTP2 setup, when the header count from the client request exceeds max-header-count value in the HTTP profile , COMPRESSION_ERROR(0x09) is seen in GoAway frame instead of FRAME_SIZE_ERROR(0x06)

Impact

Wrong GoAway Reason is logged

Conditions

- Virtual server with HTTP2 enabled - A http2 request has a header count that exceeds 'Maximum Header Count' in the HTTP profile (default value is 64)

Workaround

None

Fix Information

When header count in client request exceeds max-header-count value in HTTP profile 1) FRAME_SIZE_ERROR(0x06) error code sent with GoAway frame 2) In http2 profile stats (tmsh show ltm profile http2 all) 'Max Headers Exceeded' is logged as GoAway reason

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips