Hi Mats,
I agree with you. In fact, function drop(p) will check whether the packet
is in used before dropping it. But the function drop(p) only exists for
an NsObject. Objects not derived from class NsObject may not define this
function.
If you guys would like to use Packet::free(p), you are responsible for
consistency check. Failing to do so may result in errors like
segmentation fault.
Best,
Teerawat
On 3/13/2009, Mats Folke mats.fo...@ericsson.com wrote:
Hi!
Wouldn't it be kind of dangerous to drop the packet using the first method
described? The packet would jsut disappear and the logs would not be
consistent. I would recommend using the latter method
drop(p)
instead. This makes the logging consistent and almost all objects I've come
across where I would like to drop packets have been Connector objects.
Best regards,
Mats Folke
Teerawat Issariyakul wrote:
Hi,
Suppose you have a pointer p. You can drop the packet by executing
Packet::free(p)
Also the packet *p can be dropped from within the Connector object
by invoking function drop as follows:
drop(p);
Note that drop(p) is a function of class Connector, and therefore
must be invoked from within the scope of class Connector.
I posted how to drop a a packet in the following blog:
http://t-issariyakul.blogspot.com/2009/03/ns2-dropping-packet.html
For more information about Connector and Packet, see Chapters 5 and 8,
respectively, in the following book from Springer:
T. Issaraiyakul and E. Hossain, Introduction to Network Simulator
NS2, Springer 2008.
http://www.springer.com/engineering/signals/book/978-0-387-71759-3
You may also find the following website useful:
http://www.ece.ubc.ca/~teerawat/NS2.htm
On 3/13/2009, muralikrishna g muralikrishn...@gmail.com wrote:
Hi to all..
i am using ns-2.33, here in my work i have to drop packets from a
particular sender, i am planing to drop packets depending on the
sender node_id
please help me regarding this..
by
Muralikrishna Gaddam (muralikrishn...@gmail.com)
--
Mats Folke, M.Sc., Lic.Eng.
Research Engineer
Ericsson AB Office: +46 10 7171385
Ericsson Research Fax: +46 920 99621
P.O. Box 920Mobile: +46 76 1271385
SE-971 28 Luleå
Sweden
