Date: Tue, 4 Jan 2005 21:33:01 -0800 (PST) From: neha agrawal <nehavrce@yahoo.co.in> To: freebsd-net@freebsd.org Subject: Replaying a TCP connection Message-ID: <20050105053301.85548.qmail@web8404.mail.in.yahoo.com>
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hello!
i want to implement smtp protocol on the same
machine.i have a libpcap trace file..in which i have
captured mail traffic..(single session).and i want to
develop a program which can read this trace file..and
communicate with the smtp server...
first packet is Sync packet in trace file..so i
want to send it to smtp server...and then i want my
progrem to handle the reply sent by server..(say it
sent Syn-Ack) anf then my prgm should reply
accordingly..
for doing this i am using PF_PACKET , SOCK_RAW
and using sendto function...i am sending the
packet..im able to see it through tcpdump...but
theserver is not replying...why??i am wrking with
linux Redhat 9 kernel 2.4.20-8
(...if u r familiar with flowreplay tool..i
want to do something similar ...but mine is single
session..so less complicated...)
attching source code...
do let me know..if i am on correct track...
thnks
Neha
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