Bug ID 910105: Partial HTTP/2 payload may freeze on the BIG-IP system

Last Modified: Apr 17, 2024

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

Known Affected Versions:
14.1.0,,,,,, 14.1.2,,,,,,,,, 14.1.3,, 14.1.4,,,,,,, 14.1.5,,,,,,,,,,, 15.1.1, 15.1.2,, 15.1.3,, 15.1.4,, 15.1.5,, 15.1.6,, 15.1.7, 15.1.8,,, 15.1.9,, 15.1.10,,,, 16.0.0,, 16.0.1,,

Opened: May 18, 2020

Severity: 3-Major


HTTP/2 allows sending the payload in both directions gradually, until a frame with an END_STREAM flag closes a direction. The BIG-IP does not properly handles an early response from a server when HTTP router is configured on a virtual and partial payload sent in each direction. In this case, communication over the stream hangs.


A response with a partial payload is not delivered to a client. Communication freezes on that specific stream.


-- Virtual server is configured on the BIG-IP system with HTTP and HTTP/2 profiles on both the client and server sides. -- HTTP router profile is configured on the virtual server. -- Client sends a request and delivers a partial payload, waiting for a response from a server. -- Server responds with a partial payload.



Fix Information


Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips