[ns] Passing arguments when creating a TCPAgent in .tcl file
There is an instproc init {} procedure each for Agent and for Agent/TCPAgent.
I could not find the instproc init {} procedure of Agent/TCP/Reno or any of the
other TCP Agents.
Why?
Is it because they inherit in a virtual way from class TCPAgent?, and so the
instproc init {} procedure of the class TCPAgent is called only once for each
of them.
Then how do we differentiate between the creation of the different TCPAgents
from only one instproc init {} procedure of class TCPAgent.
My main objective is to pass arguments to the new Agent/TCP/Reno command which
will pass the arguments to its respective init procedure (which I cannot find)
and then the arguments will be passed to its static class constructor in the
tcp-reno.cc file so i can choose whether or not to pass an argument to the
constructor of the actual class RenoTcpAgent.
The main idea is to add one more constructor to class RenoTcpAgent and then to
be able to choose which constructor to call when creating the object from the
tcl script like set tcpreno [new Agent/TCP/Reno].
So i thought i would do it by passing an argument like set tcpreno [new
Agent/TCP/Reno arg1].
Any help, advice or suggestions for the above problem, or achieving a solution
of some kind will be appreciated.
Many thanks in advance.
Pankaj
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Re: [ns] how to remove ns-2.33 finally from my system
To the best of my knowledge Delete the ns-allinone-2.33 folder. Delete all the lines which have the ns-allinone-2.33 string in the .bash_profile file. there should remain atleast one line with PATH=$PATH:$Home blah blah you did not specify if it was a ns-allinone or a custom installation of ns-2.33. pankaj _ Search for videos of Bollywood, Hollywood, Mollywood and every other wood, only on Live.com http://www.live.com/?scope=videoform=MICOAL
Re: [ns] errors when type make
You can try doing MAKE with a fresh installation of ns2.33 on a different user on your linux.if it doesn't work, then your compiler or your lib.so files might have a problem, or ns2.33 might not be compatible with your linux, or you will need to install some patches.If you made some changes in the c++ code, especially to the packet.h or packet.cc files then it might help if you provided the changes to us. And then it would be a simple case of c++ code debugging. pankaj _ Want to explore the world? Visit MSN Travel for the best deals. http://in.msn.com/coxandkings
[ns] How to get a Tcl handle to a dynamically created c++ object
In my Tcl file, How do I get a handle to an object which is getting implicitly (dynamically) created. I want to access some of the binded c++ variables of the object in my Tcl file. For example, the MySnoop.tcl file in ns-2.33/tcl/ex/snoop It specifies the creation of an LL/LLSnoop object which is an object of class LLSnoop. Now LLSnoop object dynamicaly (on-the-fly) creates Snoop object of class Snoop. It creates it dynamically by calling a Tcl procedure get-snoop which creates a Snoop object, and then it typecasts it to a pointer Snoop *snoop. I want to get a TCL handle to this Snoop object which is dynamically created so as to track some of its variables on a time basis. Please Refer to files ns-2.33/tcp/snoop.h and ns-2.33/tcp/snoop.cc I already know how to get handle to the LLSnoop object, but thats because it is explicitly specified in the Tcl file. I was thinking, Is there a way to specify the Tcl handle or bind the Snoop object at the time of creation (but it is not created in the Constructor). Please Help thanks in advance pankaj _ Searching for the best deals on travel? Visit MSN Travel. http://in.msn.com/coxandkings
[ns] Binding Static Variables is not working- please help
I tried Binding a Static Variable, based on how it is described in the
ns-documentation section 3.5.1, but it is not working.
The simulator is not recognizing the Classname that I am giving.
Here is what I tried
I added the static variable in snoop.h in the class Snoop declaration in
snoop.h
static int bufsize_;
I defined it in the snoop.cc file
int Snoop::bufsize_;
I did this
class SnoopBufferClass : public TclClass {
protected:
SnoopBufferClass(const char* classname, int bufsize);
TclObject* create(int argc, const char*const* argv);
/* These two implements OTcl class access methods */
virtual void bind();
virtual int method(int argc, const char*const* argv);
};
void SnoopBufferClass::bind()
{
/* Call to base class bind() must precede add_method() */
TclClass::bind();
add_method(bufsize);
}
int SnoopBufferClass::method(int ac, const char*const* av)
{
Tcl tcl = Tcl::instance();
/* Notice this argument translation; we can then handle them as if in
TclObject::command() */
int argc = ac - 2;
const char*const* argv = av + 2;
if (argc == 2) {
if (strcmp(argv[1], bufsize) == 0) {
tcl.resultf(%d, Snoop::bufsize_);
return (TCL_OK);
}
} else if (argc == 3) {
if (strcmp(argv[1], bufsize) == 0) {
Snoop::bufsize_ = atoi(argv[2]);
return (TCL_OK);
}
}
return TclClass::method(ac, av);
}
After this, I tried to use the following OTcl command to access and change
values of Snoop::bufsize__:
SnoopBuffer bufsize 120
set i [SnoopBuffer bufsize]
set i [SnoopBuffer set bufsize]
RESULT: invalid command SnoopBuffer
After this, I tried to use the following OTcl command to access and change
values of Snoop::bufsize__:
SnoopBufferClass bufsize 120
set i [SnoopBufferClass bufsize]
set i [SnoopBufferClass set bufsize]
RESULT: invalid command SnoopBufferClass
I even tried to add a constructor in snoop.cc
SnoopBufferClass::SnoopBufferClass(const char* classname, int
bufsize):TclClass(SnoopBuffer), bufsize_(0)
{
return 0;
}
Still same reply
Please Help me out with this
If you have a working example of binding a static variable please refer it to
me.
(Except the offset variable in PacketHeader, I cannot understand what is going
on over there)
The main goal is to get the interpreter to recognise the classname I am
creating.
Any help or suggestions you can give me will be appreciated.
thanks in advance
pankaj
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[ns] using raw2xg and raw2xg_sctp to parse sent tcp and sctp pkts from trace files
hi im having problems plotting the sent pkts in xgraph due to problems in using raw2xg with trace files. does anyone know which option in raw2xg is used to plot sent tcp pkts, or sent thruput. -a is for acks -v is for events -d is for drops but which option is for the sent pkts. also, what is option -n for. i thought -n option would pasrse the packets, but its not working all the time, and what is the significance in the value passed with option -n. like -n 0, or -n 1 etc. thanks in advance pankaj _ Tried the new MSN Messenger? Its cool! Download now. http://messenger.msn.com/Download/Default.aspx?mkt=en-in
[ns] differentiating between duplicate pkts in trace file
hi i am duplicating tcp pkts using Packet *pkt = p-copy(); and sending the duplicate along another link. as both tcp pkts are identical in every way, how do i differentiate between them in the trace file. or is there any way i can change a variable in the duplicate pkt which will be visible in the trace file, i.e. which can be used to differentiate it in the trace file. thanks in advance pankaj _ The idiot box is no longer passé; it's making news and how! http://content.msn.co.in/Entertainment/TV/Default.aspx
[ns] need a tcl script for replicator for tcp packets
hi can anyone please send me a sample Tcl script which makes use of the Multicasting or Replicator to replicate TCP packets and send to all neighboring nodes. or tell me where to find such a script. im particularly interested in replicating the packets and sending it to all neighboring nodes. thanking you in advance pankaj chand _ Sign in and get updated on all the action from Formula One http://content.msn.co.in/Sports/FormulaOne/Default
[ns] ns and nam is getting confused
hi with the current protocol i am implementing, i am duplicating each tcp packet at an intermediary node in c++ using Packet *pkt = p-copy(); and sending the duplicate packet along another link to another node. however, the ns and the nam simulation is getting confused as to which packet is which, as the packets are identical in every way including the tcp sequence no. (except their c++ handles i.e. p and pkt). when i try to monitor the pkts in nam, the nam gets confused as to which pkt is the actual tcp pkt and only tracks the latter pkt that i put the monitor option on. i ve introduced a new field in the class Packet to keep track of which packet is which. i initialize this field in the Packet constructor with 0, and increment or set it in the classifiers. however, this field is automatically getting initialized again and again to 0 in an irregular way. this can only happen in the constructor. i have concluded that there is only one way that this can happen. when the packet is going from one node to the other, or from a particular layer to the next, the original packet object is not being recieved by the target, but the packet is being copied into a new Packet object without taking into consideration the new field i have put in, and then this new packet is recieved by the target. (i dont know exactly where this is happening). the old original packet object is either freed or represents one of the many infamous memory leaks. have i concluded right. if so or if not, please tell me how i can rectify the situation, so that the new field which i have added to the class Packet is not initialized more than once. i will very grateful if anyone can shed some light onto this problem. thanking you pankaj chand _ Get Married in 2007. Join Shaadi.com http://www.shaadi.com/ptnr.php?ptnr=mhottag
[ns] implementation (source code) of Tcl_GlobalEval() function
hi can anyone please tell me where i can find the implementation (source code) of the Tcl_GlobalEval() function, so that i can know which c++ functions it calls and in which order. NOTE: the Tcl_GlobalEval() function is executed by the eval() function in class Tcl. thanks in advance email: [EMAIL PROTECTED] _ Airtel Song Catcher. Get your Hello Tunes instantly http://www.airtel.in/songcatcher/SONG_CATCHER.html
[ns] sizes of different types of packets
can anyone please tell me where i can find the sizes of different types of packets. example tcp, udp, ack, message, rtproto etc. in particular, when im manually duplicating a 60 byte tcp pkt and forcibly sending it to a non recipient node and then dropping it at that node's LL (link layer), the non recipient node automatically returns a 40 byte tcp pkt with the SAME seqno (sequence no). but it is defintely a different pkt, as it is 40 bytes (not the original 60 bytes) and shows up differently when tracked in the nam (network animator). the configuration of the node is a mobile IP base station in heirarchical routing with Mac802.11, Channel/WirelessChannel and Phy/WirelessPhy. so, my question is, what is this 40 byte pkt. is it nessecarily tcp (which is shown when i click on it) or something else like MESSAGE pkt. how is this pkt being automatically generated at the node in response to a stray or misguided tcp pkt. and why and where (from which layer) is it being generated from, so that i can manually suppress it. if anyone can tell me where i should suppress it at (mac802.11 functions, wirelesschannel functions or wirelessphy functions) or how do i found out which function or line is generating that pkt to have the same seqno, i will be very grateful. thanks in advance email: [EMAIL PROTECTED] _ Catch all the cricketing action right here. Live score, match reports, photos et al. http://content.msn.co.in/Sports/Cricket/Default.aspx
[ns] debuggin c++ in ns
hi can anyone please tell how to debug the c++ source code in ns. after adding the -g and several other statements in the makefile.in and install file, im able to debug but the debugger cannot find the source code, and hence cannot show me the line of code which is raising the error (bug). i am calling the debugger on the ns binary executable in the ns-allinone2.29/bin folder. how do i make the debugger, GDB or DDD find the source code of the ns program so as to find the exact line of code that is generating the bug. thanks in advance. pankaj chand mail address: [EMAIL PROTECTED] _ Airtel Song Catcher. Get your Hello Tunes instantly http://www.airtel.in/songcatcher/SONG_CATCHER.html
[ns] how to capture a tcp packet at the Home Agent in Mobile IP
in Mobile IP, when the Home Agent is encapsulating tcp pkts to send to the Foreign Agent, im not able to detect or capture these Tcp pkts in the LL object of the Home Agent base station by omparing them with PT_TCP, however all other types of pkts can be detected. can anyone please tell me how to detect the tcp pkts in the LL of the Home Agent Base station during Encapsulation of the pkts. thanks in advance [EMAIL PROTECTED] pankaj chand _ Spice up your IM conversations. New, colorful and animated emoticons. Get chatting! http://server1.msn.co.in/SP05/emoticons/
[ns] how to configure nam for correct seqnos
in ns2.28,in the nam simulation the seq no of retransmitted tcp pkts is not quite right. whether the pkt is an old retransmittted pkt or new pkt, the seq no keeps increasing. i would like to configure nam to actually show the correct seq nos of retransmitted pkts. has anyone got an idea of how to do this? thanks in advance pankaj _ Connect with your friends who use Yahoo! Messenger with Voice. Click! http://www.msnspecials.in/wlmyahoo/index.asp
[ns] how to send only 2 tcp packets
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[ns] how to smiulate mobile ipv6
hi can anyone tell me how to simulate mobile ipv6. i want to not use mobile ipv4 and instead use mobile ipv6. thanks pankaj
[ns] how to perform Mobile IPv6
hi can anyone tell me how to perform Mobile IPv6. ill be using a wired cum wireless scenario, similar to the Mobile IPv4 example given in ns2. thanks pankaj
