Hi all
I recently downloaded the
jpcap library and read all docs and
tutorials.
I
want to develop a very simple application just calculates the total
traffic (send/receive) on my network interface.
But i don't know which parameter i should consider, and i know this is
because of my knowledge lack in (inter)networking.
Also i don't know which types of packet i should consider(just guess
something,e.g:i should survey every packet for destination & source
address and if source are my address and destination is my router(or other
clients in LAN) i should not increment the total bytes with this packet's length or captured length
I also tried in last two days to find out resources in web(Google /Wikipedia) to find out what are all kinds of packets and didn't found anything useful .Although i learned some types from the API documentations (such IPPacket including TCPPacket, ICMPPacket, UDPPacket or ARPPacket and one or two more),so ,while i think i know how to capture packets and even how to filter them, but i am confusing about which packets i should consider for my goal (to just counting traffic to/from Internet).
+And in this API there is two field in class
packet: caplen as "captured length" and len as "packet length" and i used the example application "Jpcapdumper" and i see when it captures packets, in udp packets, the "packet length" and the "captured length" are different (captured length is bigger than packet length)+
Thus i need you people to help
Sorry for long writing
Thanks in advance