Forum Discussion
Bob_10976
Nimbostratus
NimbostratusRejecting Blank Host
Hello all, we have created an iRule that is suppose to block request to a website with no Host Header. I've included the code below. The rule appears to be working, but we are getting the following error in the BigIP log files:
TCL error: BlockNoHeader - expected integer but got "reject" while executing "HTTP::respond reject"
The iRule consist of this:
when HTTP_REQUEST {
if { [HTTP::host] equals "" } {
HTTP::respond reject }
}
Any thoughts or suggestions, maybe we could be doing the block method better?
Thanks,
Bob
hoolioCirrostratus
Hi Bob,
If you want to send a TCP reset to the client you can change HTTP::respond reject to just reject.
Aaron
Bob_10976Thanks for the quick reply Aaron.. Just to clarify the rule would look like this:
when HTTP_REQUEST {
if { [HTTP::host] equals "" } {
reject }
}
Thanks,
Bob- hoolioExactly. Did that work as you want?
Aaron - Bob_10976At first I thought that did the trick because I didn't see anything in this mornings logs. I checked yesterdays logs and I can see: local/tmm err tmm[4820]: 01220001:3: TCL error: Test_BlockNoHeader - expected integer but got "reject" while executing "HTTP::respond reject"
Any thoughts? - hoolioHi Bob,
I assume you were getting that error from the original version of the iRule. Have you tried testing with this version which doesn't use HTTP::respond?when HTTP_REQUEST { if { [HTTP::host] equals "" } { reject } }
Aaron - Bob_10976Yes, I get the same error when I use the excat code above. Does it matter that I'm running 10.0.1 on my LTMs, would the iRule require a different syntax or something?
Thanks,
Bob