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[ns] Date: Mon, 10 Jul 2000 11:56:55 +0900
Dear ns-users!
I made 3 nodes in ns-allinone-2.1b6
n0 ------- n1 ------- n2
n0 : FTP-FullTCP-node
n1 : node
n2 : FullTCP-node
I added some codes to the recv() procedure in classifier.cc to get the seqno and ackno of TCP in n1.
void Classifier::recv(Packet* p, Handler*h)
{
NsObject* node = find(p);
/* ----------------- added ------------------ */
hdr_tcp *tcph = (hdr_tcp*)p->access(hdr_tcp::offset());
hdr_ip *iph = (hdr_ip*)p->access(hdr_ip::offset());
/* ----------------- added ------------------ */
if (node == NULL) {
/*
* XXX this should be "dropped" somehow. Right now,
* these events aren't traced.
*/
Packet::free(p);
return;
}
/* ----------------- added ------------------ */
printf("%g %d %d %d %d %d %2x \n", Scheduler::instance().clock(), iph->flowid(), iph->src_.addr_, iph->dst_.addr_, tcph->seqno(), tcph->ackno(), tcph->flags()); /* OUTPUT */
/* ----------------- added ------------------ */
node->recv(p,h);
}
Using the added code, I could get the ackno, seqno, etc.
And how can I make the OUTPUT only in n1?(OUTPUT is printf in recv() procedure added by me)
And also I want to generate several packets in n1. How can I do?
Do you have an experiance of this kind of programming?
Could I share your prominent thought?
Kyohong Jin.
[email protected]