Thank you Joerg and Christopher.
As you have advised I have gone through the wireshark developer's guide and the Read-me. I got a basic idea about the functionality of wireshark and how dissectors are coded. I would like to first start by developing the existing dissectors.But I am confused about where to go.I would like to know more about working of the source code. I would be grateful if anyone suggests me some simple bugs to work on(even solved ones) so that I can learn more about the working of source code.
thank you in advance.
sincerely,
kaushik