$SIG{CHLD} = 'IGNORE'; # or arrange to wait at end

# Start the server
my $server_path = $bin . $server;
my $spid = fork;
die $! unless defined $spid;
exec $server_path or die $! unless $spid;

# Start up the client
my $client_path = $bin . $client;
my $cpid = fork;
die $! unless defined $cpid;
exec $client_path or die $! unless $cpid;