On Wednesday 03 March 2004 12:35 am, bino-psn wrote:
> Dear All.
> Is there any way to know whter a packet is a "request" or "reply/respon"
> packets ?
I'm not sure if I understand you correctly, but let me make a few definitions
of my own, and see if they match yours...
"Requests" come from a client to a server. "Responses" and the reply from
the server to the client.
Requests start with a SYN packet (I'm assuming we're talking about TCP
connections here?), and responses start with a SYN/ACK packet. Thereafter,
all packets have ACK set.
So, you can detect the first packet of a request from the fact that SYN (only)
is set, and you can detect the first packet of a response from that fact that
SYN and ACK are set.
Does that help answer your question?
Antony.
--
Perfection in design is achieved not when there is nothing left to add, but
rather when there is nothing left to take away.
- Antoine de Saint-Exupery
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