9
shutdown($socket, 0) if $socket;
shutdown($socket, 2) if $socket;
close($socket) if $socket;
和
shutdown($socket, 2) if $socket;
close($socket) if $socket;
而且之间的差异有
shutdown($socket, 1) if $socket;
shutdown($socket, 2) if $socket;
close($socket) if $socket;
和
shutdown($socket, 2) if $socket;
close($socket) if $socket;
之间的差异
最后是需要的close
?