there are a number of clients connected to a server.... how can i count that each clients recieve ...? how do i moniter the activity of the client..?

Tcpdump , ethereal , not worthy ? Multithreaded aplication ?


If you wanna measure/count how many bytes does a client receive ( on the server side ) , you can easily implement a contor , for receive bytes.Suposing that all byte's receive by one client are send by the server , it's easy to make something like :

send(j,da,sizeof(da), 0);

int j;
int TRAFIC=0; /* start 0 bytes transfered to client j */
nbytes=send(da,sizeof(da),0);
TRAFIC=TRAFIC+nbytes;

i am planning to implement this in unix system and want to do this using C as that is the language that know well.... how doi start with it?