working software

A standard method of communicating with servers is by sending signals. This can allow one to print the contents of internal tables or to shut them down cleanly. Modify lserv_funcs1.c so it responds to SIGHUP by printing the contents of the table (ticket_array) to standard output, and to SIGQUIT by printing the contents of the table and a message "Shutting down ...", closing the socket and exiting. Note that the shut_down procedure does the latter part but is not currently called in lserv1.c. You will need to modify it to ensure that shut_down is called in lserv1.c when the SIGQUIT is received. Remember you need to compile this modified version with lserv1.c and dgram.c as in cc -o lserv1 lserv1.c lserv_funcs1.c dgram.c You can test these features by using the kill command e.g. kill -HUP serverpid where serverpid is the process ID of the licence server.