[Click] Anyone have a simple stateless TCP responder?

[Beyers Cronje]

Hi Nicholas,

No copyright. Just a small element we used at some time to test web
proxy cache hit performance. You'll probable need to make some changes
to fit your needs. Also I just checked the source and my description
below was slightly wrong, it currently ACKs every second packet or if
the FIN bit is set.

I'll mail it to you off the list.

Beyers

On 6/2/05, Nicholas Weaver <nweaver at icsi.berkeley.edu> wrote:
> On Thu, Jun 02, 2005 at 11:43:38AM +0200, Beyers Cronje composed:
> > Hi Nicholas,
> >
> > I've got a small element that provides valid ACKs on packets coming in through it's input 0. It ACKs every second packet || packets with PUSH bit set. Not exactly what you are looking for, but should be very easy to add SYN processing ie through input 1 and have a template pre-build HTTP response/redirect packet.
> >
> > Let me know.
> 
> Thanks.  What would be the copyright on the element?
> 
> > Beyers
> >
> >
> > -----Original Message-----
> > From: click-bounces at amsterdam.lcs.mit.edu on behalf of Nicholas Weaver
> > Sent: Thu 6/2/2005 12:45 AM
> > To: click at amsterdam.lcs.mit.edu
> > Subject: [Click] Anyone have a simple stateless TCP responder?
> >
> >
> > 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.
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> >
> >
> >
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> --
> Nicholas C. Weaver                               nweaver at icsi.berkeley.edu
>      This message has been ROT-13 encrypted twice for higher security.
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