Last Modified: Mar 30, 2024
Affected Product(s):
BIG-IP LTM
Known Affected Versions:
16.1.3.1, 16.1.3.2, 16.1.3.3, 16.1.3.4, 16.1.3.5
Fixed In:
17.1.1, 16.1.4, 15.1.10
Opened: Mar 10, 2023 Severity: 3-Major
The 504 Gateway Timeout pool member responses are generated from a Microsoft webserver handling HTTP/2 requests. The tcpdump shows that the HTTP/2 stream sends the request without an appropriate End Stream flag on the Headers packet.
The HTTP GET request causing timeout.
The server has to provide settings with max-frame-size small enough to force BIG-IP to split the headers across multiple HTTP/2 frames, otherwise this issue does not occur.
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