Forum Discussion
Russell_E_Glaue
Nimbostratus
NimbostratusiRule to avoide "Invalid action EV_SINK_HEADER during ST_HTTP_EARLY_100CONTINUE" error
We are often getting this error message on out BigIP:
Feb 18 13:41:37 tmm tmm[1568]: 011f0007:3: http_process_state_early_100continue - Invalid action EV_SINK_HEADER during ST_HTTP_EARLY_100CONTINUE (Server side: vip= profile=http pool=
How can I write an iRule to resolve this error from occurring?
Also, does anyone know what this is? Is it related to the new Extended Validation (EV) SSL Certificates - perhaps the web user's browser is attempting some kind of EV related function?
-RG
Russell_E_Glaue
Additionally, I read this post:
http://devcentral.f5.com/default.aspx?tabid=53&view=topic&forumid=5&postid=6645
Although the error message is not quite the same.
Here is our current BigIP version: BIG-IP 9.4.4 Build 65.1 Final- In this case, the EV in the error message is short for "event", and does not refer to SSL certificates.
The most common way for this to happen is that you have a client issuing a POST to a virtual server with an iRule that attempts to call HTTP::retry from the HTTP_REPONSE event where the server is sending a response without receiving the entire client request.
In general, retrying POST methods is not a good idea, so if this is the case for you, then I would alter your iRule accordingly.
