Symptoms

BIG-IP fails to properly process trailers when HTTP or HTTP/2 is configured on the virtual. This prevents the use of protocols such as gRPC that rely on such headers.

Impact

The trailing headers are dropped or ignored, preventing operation of protocols such as gRPC.

Conditions

BIG-IP is configured for use with HTTP or HTTP/2 and receives a response that includes trailing headers.

Workaround

None

Fix Information

BIG-IP traffic profiles commonly used for gRPC deployments now support trailing headers.

Behavior Change

BIG-IP traffic profiles commonly used for gRPC deployments now support trailing headers.