Hello =)


I'd like to know how can i identificate who sent the last "data" arrived.

For exemple:


A server is running...

then, a client connect to the server and asks for a DOWNLOAD.

BUT, there's millions of clients connected at the same time, so, how can i know WICH client sent to me a file request?


and how can i send a message directly to the server?? and to another specified client?? =D



thx