[Click] Anyone have a simple stateless TCP responder?

[Nicholas Weaver]

Does anyone have a simple stateless TCP responder element?

Namely, it accepts a SYN.  It generates a corresponding SYN-ACK, a
spew of data packets (without waiting for the ACK from the SYN-ACK),
and the FIN?

I want an element which can give an HTTP redirect or error message
when I'm blocking an IP, rather than just dropping on the floor, and
I'd (ideally) want it to be stateless.  If it doesn't work 100% of teh
time due to dropped packets, no big deal, the connections it is used
on are for ones which are explicitly being dropped by a security
module.

Thanks.

-- 
Nicholas C. Weaver                               nweaver at icsi.berkeley.edu
     This message has been ROT-13 encrypted twice for higher security.