s, S and L use the system's endianness.
x86's s corresponds to universal v, with sign correction.
x86's S corresponds to universal v.
x86's L corresponds to universal V.

my $query = pack("L L L N N S S", ...);
should be
my $query = pack("V V V N N v v", ...);

... = unpack ("L L C Z20 Z40 c Z30 Z30 C C C s S N", $response);
should be
... = unpack ("V V C Z20 Z40 c Z30 Z30 C C C v v N", $response);
$score -= 65536 if $score > 32767;

$score -= 65536 if $score > 32767;
can also be written as
$score = unpack('s', pack('S', $score));

In reply to Re: p0fq.pl and pack? by ikegami
in thread p0fq.pl and pack? by macli

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