network traffic capture

[kirannapit]

hi,
what API and tools in widows will help me to capture network traffic so that i can plot graph for it , I am using LAN on ethernet based network.including win2k and xp OS.
links and code will be greatly helpful
kiran

[Ejaz]

May be this can give you a start

http://www.codeguru.com/Cpp/I-N/network/tcpip/article.php/c5413/

[Mathew Joy]

Originally posted by kirannapit
hi,
what API and tools in widows will help me to capture network traffic so that i can plot graph for it , I am using LAN on ethernet based network.including win2k and xp OS.
links and code will be greatly helpful
kiran Steps are simple

Create a raw socket. Bind it to the ip you want to monitor. Using WSAIoctl() set the socket option to SIO_RCVALL. Call recv() to get all the traffic that comes thru the IP. Now the recv buf will contain the data including the packet header.

[Andreas Masur]

[Moved thread]

[kirannapit]

I used WSAIoctl to capture the packets .
Now about network traffic, how do i calculate the total packets recevied, sent,error packets, so as to plot graph dynamically as any other network monitor tool
kiran

[Mathew Joy]

Originally posted by kirannapit
I used WSAIoctl to capture the packets .
Now about network traffic, how do i calculate the total packets recevied, sent,error packets, so as to plot graph dynamically as any other network monitor tool
kiran As I said, use recv() to get data. The data will contain the whole packet (data and the header). Do some research about the packet structure. This (http://blacksun.box.sk/books.html) may help you to start. Search where raw sockets are discussed.

[jpo234]

I suggest you look at the packet capture library available from http://winpcap.polito.it

It comes with examples and should let you do everything you might ever want.