/*
 * for(;;){
 *		recvfrom(skt, buffer, 1024, 0, &rec_addr, addrsize);
 *		if(it's from somebody we know, such as a message to relay){
 *			for(each client in our list of address)
 *				send out the message to that client
 *		}
 *		if(it's from somebody new, and it's a login message with a username)
 *			add that person to the list of people we know
 * }